{{PANES}}
-
-
-
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/rangy-core.js b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/rangy-core.js
deleted file mode 100644
index d1f4a9f..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/rangy-core.js
+++ /dev/null
@@ -1,13 +0,0 @@
-(function() {
- if (window.rangy) { return; }
-
- window.rangy = {
- initialized: true,
- init: function() {
- return window.rangy;
- },
- createRange: function(doc) {
- return (doc || document).createRange();
- }
- };
-})();
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/rangy-serializer.js b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/rangy-serializer.js
deleted file mode 100644
index ff74015..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/rangy-serializer.js
+++ /dev/null
@@ -1,93 +0,0 @@
-(function() {
- if (!window.rangy) {
- window.rangy = {};
- }
- if (window.rangy.serializeRange && window.rangy.deserializeRange) {
- return;
- }
-
- function normalizeHref(rawHref) {
- if (!rawHref) { return ''; }
- var value = String(rawHref);
- value = value.replace(/^.*?:\/\/[^/]+\//, '');
- value = value.split('#')[0];
- value = value.replace(/^\/+/, '');
- try {
- value = decodeURIComponent(value);
- } catch (error) {
- }
- return value;
- }
-
- function nodePath(node) {
- var path = [];
- var current = node;
- while (current && current !== current.ownerDocument) {
- var parent = current.parentNode;
- if (!parent) { break; }
- var index = Array.prototype.indexOf.call(parent.childNodes, current);
- path.unshift(index);
- current = parent;
- }
- return path;
- }
-
- function nodeFromPath(doc, path) {
- var current = doc;
- for (var index = 0; index < path.length; index += 1) {
- if (!current || !current.childNodes || current.childNodes.length <= path[index]) {
- return null;
- }
- current = current.childNodes[path[index]];
- }
- return current;
- }
-
- function documentContexts(rootDoc) {
- var items = [];
- if (!rootDoc) { return items; }
- items.push(rootDoc);
- var frames = rootDoc.querySelectorAll ? rootDoc.querySelectorAll('iframe') : [];
- Array.prototype.forEach.call(frames, function(frame) {
- try {
- if (!frame.contentDocument) { return; }
- documentContexts(frame.contentDocument).forEach(function(item) {
- items.push(item);
- });
- } catch (error) {
- }
- });
- return items;
- }
-
- window.rangy.serializeRange = function(range, doc) {
- var ownerDocument = doc || (range && range.startContainer && range.startContainer.ownerDocument) || document;
- return JSON.stringify({
- kind: 'dom-range',
- documentHref: normalizeHref(ownerDocument.location && ownerDocument.location.href),
- startPath: nodePath(range.startContainer),
- startOffset: range.startOffset,
- endPath: nodePath(range.endContainer),
- endOffset: range.endOffset
- });
- };
-
- window.rangy.deserializeRange = function(rangeInfo, rootDoc) {
- try {
- var payload = typeof rangeInfo === 'string' ? JSON.parse(rangeInfo) : rangeInfo;
- var documentHref = normalizeHref(payload.documentHref);
- var resolvedDocument = (documentContexts(rootDoc || document).find(function(candidate) {
- return normalizeHref(candidate.location && candidate.location.href) === documentHref;
- })) || (rootDoc || document);
- var startNode = nodeFromPath(resolvedDocument, payload.startPath || []);
- var endNode = nodeFromPath(resolvedDocument, payload.endPath || []);
- if (!startNode || !endNode) { return null; }
- var range = resolvedDocument.createRange();
- range.setStart(startNode, payload.startOffset || 0);
- range.setEnd(endNode, payload.endOffset || 0);
- return range;
- } catch (error) {
- return null;
- }
- };
-})();
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-dark.css b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-dark.css
deleted file mode 100644
index cb21780..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-dark.css
+++ /dev/null
@@ -1,56 +0,0 @@
-/* 适配搜狗百科 bar 里的 icon 被染色 */
-.header-home, .header-home:before, .header-logo, .loginBox, .header-search, .header-search:before, .header-more:before {
- background-color: transparent !important;
-}
-
-/* 适配搜狗百科 某些透明的 div 被染色导致挡住图片 */
-.abstract-img-none {
- background: none !important;
-}
-
-/* 适配百度搜索图片丢失 */
-.c-touchable-feedback-no-default * {
- background-color: transparent !important;
-}
-
-img, video {
- z-index: 1 !important;
-}
-
-/*背景纯黑*/
-*, *:before, *:after {
- background-color: rgba(0, 0, 0, 1) !important;
-}
-
-.wr-business-container,
-.wr-business-container *,
-.wr-business-container *:before,
-.wr-business-container *:after {
- background-color: rgb(28, 28, 29) !important;
-}
-
-/*背景颜色和一般字体颜色*/
-div, h1, h2, h3, h4, h5, h6, p, body, em, html, link, textarea, form, select, input, span, button, em, menu, aside, table, tr, td, nav, dl, dt, dd, amp-iframe, main, section {
- color: rgba(180, 180, 182, 1) !important;
- border-color: #555555 !important;
- text-shadow: 0 0 0 #000;
-}
-
-/*超链接*/
-a {
- color: rgba(84, 127, 176, 1) !important;
-}
-
-blockquote {
- color : rgb(218, 220, 224);
- background-color : rgb(10, 14, 18) !important;
- border-left: 1px solid rgba(116, 120, 124, 1);
-}
-
-img {
- border: none !important;
-}
-
-ul li:before, ol li:before {
- background-color: rgba(196, 200, 204, 1) !important;
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-default.css b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-default.css
deleted file mode 100644
index 49323e0..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-default.css
+++ /dev/null
@@ -1,221 +0,0 @@
-/* this file is processed with xxd via a build rule and embedded in library */
-
-/* these styles come from Safari */
-
-/* note that comments are only permitted before selectors and before the styles */
-
-/* DO NOT fiddle with this file if you want to have your own styles,
- pass your own stylesheet via the option parameter to override these defaults */
-
-head {
- display:none;
-}
-
-title {
- display:none;
-}
-
-style {
- display:none;
-}
-
-link {
- display: none;
-}
-
-meta {
- display: none;
-}
-
-script {
- display: none;
-}
-
-html {
- display:block;
- margin:0;
- padding:0;
-}
-
-body {
- display:block;
- font-size:16px;
- margin:0;
- padding:0;
-}
-
-article,aside,footer,header,hgroup,nav,section {
- display:block;
-}
-
-p {
- display:block;
- margin:0;
-}
-
-img {
- margin:0;
-}
-
-ul,ol,menu,dir {
- display:block;
- margin:1em 0 1em 0;
- padding-left:24px;
-}
-
-ul {
- list-style-type:disc;
-}
-
-ol {
- list-style-type:decimal;
-}
-
-li {
- display:list-item;
-}
-
-ul ul, ol ul {
- list-style-type: circle;
-}
-
-ol ol ul, ol ul ul, ul ol ul, ul ul ul {
- list-style-type: square;
-}
-
-code {
- font-family:Courier;
-}
-
-pre, xmp, plaintext, listing {
- display: block;
- font-family: monospace;
- white-space: pre;
- margin: 1em 0;
-}
-
-a {
- color:#2262A3;
- text-decoration:underline;
-}
-
-a:active {
- color:#2262A3;
-}
-
-center {
- text-align:center;
- display:block;
-}
-
-strong,b {
- font-weight:bold;
-}
-
-i,em {
- font-style:italic;
-}
-
-u {
- text-decoration:underline;
-}
-
-big {
- font-size:bigger;
-}
-
-small {
- font-size:smaller;
-}
-
-sub {
- font-size:smaller;
- vertical-align:sub;
-}
-
-sup {
- font-size:smaller;
- vertical-align:super;
-}
-
-s,strike,del {
- text-decoration:line-through;
-}
-
-tt,code,kbd,samp {
- font-family:monospace;
-}
-
-pre,xmp,plaintext,listing {
- display:block;
- font-family:monospace;
- white-space:pre;
- margin-top:1em;
- margin-right:0;
- margin-bottom:1em;
-}
-
-pre {
- background-color:rgba(0,0,0,.05);
- padding-top:1em;
- padding-bottom:1em;
- border-radius:0.3em;
-}
-
-h1 {
- display:block;
- font-size:1.5em;
- font-weight: normal;
-}
-
-h2 {
- display:block;
- font-size:1.4em;
- margin-top: 0.83em;
-}
-
-h3 {
- display:block;
- font-size:1.3em;
- margin-top: 1em;
-}
-
-h4 {
- display:block;
- font-size:1.2em;
- margin-top: 1.33em;
-}
-
-h5 {
- display:block;
- font-size:1.1em;
- margin-top: 1.67em;
-}
-
-h6 {
- display:block;
- font-size:1em;
- margin-top: 2.33em;
-}
-
-div {
- display: block;
-}
-
-hr {
- display: block;
- margin:0.5em auto 0.5em auto;
- border-style: inset;
- border-width: 1px;
-}
-
-table {
- display: table;
- border-collapse: separate;
- border-spacing: 2px;
- border-color: gray;
-}
-
-blockquote {
- display: block;
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-replace-latin.css b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-replace-latin.css
deleted file mode 100644
index 318b912..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-replace-latin.css
+++ /dev/null
@@ -1,113 +0,0 @@
-/* 代码块，注意必须写font-weight使字体生效 */
-pre {
- font-family: "Menlo";
- font-weight: normal;
- line-height: 1.5em;
-}
-
-/*版权信息*/
-.copyRightTitle {
- color: black;
- font-size: 1.5em;
- font-family: "Source Han Serif CN";
- font-weight: normal;
-}
-
-/*图片说明文字*/
-.eepub-single-image-title {
- font-size: 0.75em;
- text-align: center;
- line-height: 1.4em;
- color: rgba(0, 0, 0, 0.9);
- margin: 0.2em 0.4em 1em 0.4em;
- font-weight: normal;
-}
-
-/*标题*/
-.firstTitle, h1.firstTitle {
- font-size: 1.5em;
- font-weight: bold;
- line-height: 1.25em;
-}
-.secondTitle, h2.secondTitle {
- font-size: 1.4em;
- font-weight: bold;
- line-height: 1.35em;
-}
-.thirdTitle, h3.thirdTitle {
- font-size: 1.3em;
- font-weight: bold;
- line-height: 1.5em;
-}
-.fourthTitle, h4.fourthTitle {
- font-size: 1.2em;
- font-weight: bold;
- line-height: 1.65em;
-}
-.fifthTitle, h5.fifthTitle {
- font-size: 1.1em;
- font-weight: bold;
- line-height: 1.85em;
-}
-.sixthTitle, h6.sixthTitle {
- font-size: 1em;
- font-weight: bold;
- line-height: 2em;
-}
-
-/*首字加大*/
-/*浮动元素有默认的margin，所以这里会修复一下*/
-.ftext {
- float: left;
- margin: 0em;
- font-size: 2.38em;
- font-weight: normal;
-}
-
-/*引用内容*/
-.conQuot {
- font-weight: normal;
- margin: 0em 0em 0.2em 0em;
-}
-
-/*标题下来可能会有一行subHead*/
-.subHead{
- text-indent: 2em;
-}
-
-pre, pre span, pre code {
- font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
- font-size:.7em!important;
-}
-
-.bodyPic {
- wr-vertical-center-style: 2;
-}
-
-.qrbodyPic {
- page-break-inside: avoid;
- wr-vertical-center-style: 2;
-}
-
-/* 注标图 */
-.qqreader-footnote {
- width: 1em;
-}
-
-/* 私有垂直居中类 */
-.wr-vertical-center {
- wr-vertical-center-style: 1 !important;
-}
-
-/* 翻译 */
-.wr-translation {
- line-height: 1.7em !important;
-}
-
-/* 章节结尾工具 */
-.book-chapter-tool {
- display: block;
- height: 78px;
- width: 100%;
- margin-top: 24px;
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-replace.css b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-replace.css
deleted file mode 100644
index 7c4909c..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBCore/Resources/wxread-replace.css
+++ /dev/null
@@ -1,171 +0,0 @@
-/* 代码块，注意必须写font-weight使字体生效 */
-pre {
- font-family: "Menlo";
- font-weight: normal;
- line-height: 1.5em;
-}
-
-/*版权信息*/
-.copyRightTitle {
- color: black;
- font-size: 1.5em;
- font-family: "Source Han Serif CN";
- font-weight: normal;
-}
-
-/*图片说明文字*/
-.eepub-single-image-title {
- font-size: 0.75em;
- text-align: center;
- line-height: 1.4em;
- color: rgba(0, 0, 0, 0.9);
- margin: 0.2em 0.4em 1em 0.4em;
- font-family: "FZFSJW--GB1-0";
- font-weight: normal;
-}
-
-/*标题*/
-.firstTitle, h1.firstTitle {
- font-size: 1.5em;
- font-family: "Source Han Serif CN";
- font-weight: bold;
- line-height: 1.25em;
-}
-.secondTitle, h2.secondTitle {
- font-size: 1.4em;
- font-family: "Source Han Serif CN";
- font-weight: bold;
- line-height: 1.35em;
-}
-.thirdTitle, h3.thirdTitle {
- font-size: 1.3em;
- font-family: "Source Han Serif CN";
- font-weight: bold;
- line-height: 1.5em;
-}
-.fourthTitle, h4.fourthTitle {
- font-size: 1.2em;
- font-family: "Source Han Serif CN";
- font-weight: bold;
- line-height: 1.65em;
-}
-.fifthTitle, h5.fifthTitle {
- font-size: 1.1em;
- font-family: "Source Han Serif CN";
- font-weight: bold;
- line-height: 1.85em;
-}
-.sixthTitle, h6.sixthTitle {
- font-size: 1em;
- font-family: "Source Han Serif CN";
- font-weight: bold;
- line-height: 2em;
-}
-
-/*首字加大*/
-/*浮动元素有默认的margin，所以这里会修复一下*/
-.ftext {
- float: left;
- margin: 0em;
- font-size: 2.38em;
- font-weight: normal;
-}
-
-/*引用内容*/
-.conQuot {
- font-family: "FZFSJW--GB1-0";
- font-weight: normal;
- margin: 0em 0em 0.2em 0em;
-}
-
-/*标题下来可能会有一行subHead*/
-.subHead{
- text-indent: 2em;
-}
-
-pre, pre span, pre code {
- font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
- font-size:.7em!important;
-}
-
-.bodyPic {
- wr-vertical-center-style: 2;
-}
-
-.qrbodyPic {
- page-break-inside: avoid;
- wr-vertical-center-style: 2;
-}
-
-/* 注标图 */
-.qqreader-footnote {
- width: 1em;
-}
-
-/* 翻译 */
-.wr-translation {
- line-height: 1.7em !important;
-}
-
-/*-------------------- 小文章相关 ----------------------*/
-
-/*epub-custom-rule-6 如果 class="weread-page-relate" 在开头，需要把上一页末尾一行移到这一页*/
-.weread-page-relate {
- weread-page-relate:true;
-}
-
-/*epub-custom-rule-29 小文章打赏的样式*/
-.chapter-reward {
- display: block;
- height: 120px;
- width: 100%;
- margin-top: 24px;
-}
-
-/*epub-custom-rule-7 小文章工具栏标签的样式*/
-.chapter-tool {
- display: block;
- height: 140px;
- width: 100%;
- margin-top: 24px;
-}
-
-/* 章节结尾工具 */
-.book-chapter-tool {
- display: block;
- height: 78px;
- width: 100%;
- margin-top: 24px;
-}
-
-/* 调试好样式后和安卓同步，交给后台随小文章 css 下发，并把下面的样式从replace.css 删除 */
-
-/* 安卓的re_bookItem是通过原生view留出上下空间的，但是iOS是通过css来控制 */
-.re_bookItem{
- display: block;
- margin: 18px 0 18px 0;
-}
-
-p {
- text-align:justify;
-}
-
-img[data-image-size="large"] {
- width: 100%;
-}
-
-/* 文集公众号文章不支持控件的样式 */
-.unsupported_iframe {
- border-radius: 4px;
- border: 1px solid #ffcdc0;
- background: #fee;
- padding: 12px 0px;
- color: #ff8d8d;
- text-align: center;
- font-size: 14px;
-}
-
-/* 私有垂直居中类 */
-.wr-vertical-center {
- wr-vertical-center-style: 1 !important;
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBBuildDiagnosticsReporter.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBBuildDiagnosticsReporter.swift
deleted file mode 100644
index e169d71..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBBuildDiagnosticsReporter.swift
+++ /dev/null
@@ -1,63 +0,0 @@
-import Foundation
-
-struct RDEPUBBuildDiagnosticsReporter {
-
- func phase7SemanticSummary(
- title: String?,
- diagnostics: [RDEPUBTextChapterPaginationDiagnostic]
- ) -> String? {
-
- guard !diagnostics.isEmpty else { return nil }
-
- let blockKinds = uniqueValues(from: diagnostics.flatMap(\.blockKinds))
- let semanticHints = uniqueValues(from: diagnostics.flatMap(\.semanticHints))
- let attachmentPlacements = uniqueValues(from: diagnostics.flatMap(\.attachmentPlacements))
-
- let note = diagnostics
- .flatMap(\.sampleNotes)
- .first(where: { $0.contains("semantic") || $0.contains("attachment") || $0.contains("block kinds") })
-
- var parts = [
- title,
- "章节 \(diagnostics.count)",
- blockKinds.isEmpty ? nil : "block kinds [\(blockKinds.map(\.rawValue).joined(separator: ","))]",
- semanticHints.isEmpty ? nil : "hints [\(semanticHints.map(\.rawValue).joined(separator: ","))]",
- attachmentPlacements.isEmpty ? nil : "placements [\(attachmentPlacements.map(\.rawValue).joined(separator: ","))]"
- ].compactMap { $0 }
-
- if let note {
- parts.append(note)
- }
- return parts.joined(separator: " · ")
- }
-
- func chapterDiagnostic(
- href: String,
- title: String,
- pages: [RDEPUBTextPage]
- ) -> RDEPUBTextChapterPaginationDiagnostic {
- RDEPUBTextChapterPaginationDiagnostic(
- href: href,
- title: title,
- pageCount: pages.count,
- breakReasons: pages.map(\.metadata.breakReason),
-
- attachmentPageCount: pages.filter { !$0.metadata.attachmentKinds.isEmpty }.count,
-
- blockAdjustedPageCount: pages.filter { $0.metadata.breakReason == .blockBoundary || $0.metadata.breakReason == .attachmentBoundary }.count,
- blockKinds: uniqueValues(from: pages.flatMap(\.metadata.blockKinds)),
- semanticHints: uniqueValues(from: pages.flatMap(\.metadata.semanticHints)),
- attachmentPlacements: uniqueValues(from: pages.flatMap(\.metadata.attachmentPlacements)),
-
- sampleNotes: Array(pages.flatMap(\.metadata.diagnostics).prefix(4))
- )
- }
-
- private func uniqueValues(from values: [T]) -> [T] {
- values.reduce(into: [T]()) { result, value in
- if !result.contains(value) {
- result.append(value)
- }
- }
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBChapterTailNormalizer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBChapterTailNormalizer.swift
deleted file mode 100644
index 6a2b19f..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBChapterTailNormalizer.swift
+++ /dev/null
@@ -1,197 +0,0 @@
-import Foundation
-
-struct RDEPUBChapterTailNormalizer {
-
- func normalize(
- _ frames: [RDEPUBTextLayoutFrame],
- content: NSAttributedString,
- href: String
- ) -> [RDEPUBTextLayoutFrame] {
-
- guard frames.count > 1 else { return frames }
-
- var normalized = frames
-
- var compacted: [RDEPUBTextLayoutFrame] = []
- compacted.reserveCapacity(normalized.count)
- for frame in normalized {
- if shouldDropWhitespaceOnlyFrame(frame, in: content) {
- let note = "normalized: dropped whitespace-only intermediate page \(NSStringFromRange(frame.contentRange))"
-
- if var previous = compacted.popLast() {
- previous.diagnostics.append(note)
- compacted.append(previous)
- } else {
- }
- continue
- }
- compacted.append(frame)
- }
- normalized = compacted
-
- while let lastFrame = normalized.last,
- shouldDropWhitespaceOnlyFrame(lastFrame, in: content) {
- normalized.removeLast()
- let note = "normalized: dropped whitespace-only trailing page \(NSStringFromRange(lastFrame.contentRange))"
- if var previousFrame = normalized.popLast() {
- previousFrame.diagnostics.append(note)
- normalized.append(previousFrame)
- } else {
- }
- }
-
- guard normalized.count > 1,
- let lastFrame = normalized.last,
- let previousFrame = normalized.dropLast().last,
- shouldMergeShortTrailingFrame(lastFrame, previousFrame: previousFrame, in: content) else {
- return normalized
- }
-
- let mergedFrame = mergeTrailingFrame(previousFrame, with: lastFrame)
- normalized.removeLast(2)
- normalized.append(mergedFrame)
- return normalized
- }
-
- private func shouldDropWhitespaceOnlyFrame(
- _ frame: RDEPUBTextLayoutFrame,
- in content: NSAttributedString
- ) -> Bool {
- guard frame.contentRange.length > 0,
- attachmentCount(in: content, range: frame.contentRange) == 0 else {
- return false
- }
- return visibleCharacterCount(in: content, range: frame.contentRange) == 0
- }
-
- private func shouldMergeShortTrailingFrame(
- _ trailingFrame: RDEPUBTextLayoutFrame,
- previousFrame: RDEPUBTextLayoutFrame,
- in content: NSAttributedString
- ) -> Bool {
-
- guard trailingFrame.contentRange.length > 0,
- NSMaxRange(previousFrame.contentRange) == trailingFrame.contentRange.location else {
- return false
- }
-
- let visibleCount = visibleCharacterCount(in: content, range: trailingFrame.contentRange)
- let trailingAttachmentCount = attachmentCount(in: content, range: trailingFrame.contentRange)
-
- guard visibleCount <= 2,
- trailingFrame.contentRange.length <= 2,
- visibleCount > 0 || trailingAttachmentCount > 0 else {
- return false
- }
-
- guard !frameHasAvoidPageBreakInside(trailingFrame, in: content) else {
- return false
- }
-
- let previousVisibleCount = visibleCharacterCount(in: content, range: previousFrame.contentRange)
- return previousVisibleCount >= max(visibleCount * 8, 12)
- }
-
- private func frameHasAvoidPageBreakInside(
- _ frame: RDEPUBTextLayoutFrame,
- in content: NSAttributedString
- ) -> Bool {
- if frame.semanticHints.contains(.avoidPageBreakInside) {
- return true
- }
-
- guard content.length > 0,
- let safeRange = clampedRange(frame.contentRange, in: content),
- safeRange.length > 0 else {
- return false
- }
-
- var found = false
- content.enumerateAttribute(.rdPageSemanticHints, in: safeRange) { value, _, stop in
- guard let rawValue = value as? String else { return }
- let hints = rawValue
- .split(separator: ",")
- .compactMap { RDEPUBTextSemanticHint(rawValue: String($0)) }
- if hints.contains(.avoidPageBreakInside) {
- found = true
- stop.pointee = true
- }
- }
- return found
- }
-
- private func mergeTrailingFrame(
- _ previousFrame: RDEPUBTextLayoutFrame,
- with trailingFrame: RDEPUBTextLayoutFrame
- ) -> RDEPUBTextLayoutFrame {
-
- let mergedRange = NSRange(
- location: previousFrame.contentRange.location,
- length: NSMaxRange(trailingFrame.contentRange) - previousFrame.contentRange.location
- )
-
- return RDEPUBTextLayoutFrame(
- contentRange: mergedRange,
- breakReason: trailingFrame.breakReason,
- blockRange: trailingFrame.blockRange ?? previousFrame.blockRange,
- attachmentRanges: uniqueRanges(from: previousFrame.attachmentRanges + trailingFrame.attachmentRanges),
- attachmentKinds: uniqueValues(from: previousFrame.attachmentKinds + trailingFrame.attachmentKinds),
- blockKinds: uniqueValues(from: previousFrame.blockKinds + trailingFrame.blockKinds),
- semanticHints: uniqueValues(from: previousFrame.semanticHints + trailingFrame.semanticHints),
- attachmentPlacements: uniqueValues(from: previousFrame.attachmentPlacements + trailingFrame.attachmentPlacements),
- trailingFragmentID: trailingFrame.trailingFragmentID ?? previousFrame.trailingFragmentID,
-
- diagnostics: previousFrame.diagnostics
- + trailingFrame.diagnostics
- + ["normalized: merged short trailing page \(NSStringFromRange(trailingFrame.contentRange)) into previous page"]
- )
- }
-
- private func visibleCharacterCount(
- in content: NSAttributedString,
- range: NSRange
- ) -> Int {
- guard range.length > 0 else { return 0 }
- let string = content.attributedSubstring(from: range).string
-
- let filteredScalars = string.unicodeScalars.filter { scalar in
- !CharacterSet.whitespacesAndNewlines.contains(scalar)
- && !CharacterSet.controlCharacters.contains(scalar)
- }
- return filteredScalars.count
- }
-
- private func attachmentCount(in content: NSAttributedString, range: NSRange) -> Int {
- guard content.length > 0, range.length > 0 else { return 0 }
- var count = 0
- content.enumerateAttribute(.attachment, in: range) { value, _, _ in
- if value != nil {
- count += 1
- }
- }
- return count
- }
-
- private func clampedRange(_ range: NSRange, in content: NSAttributedString) -> NSRange? {
- guard range.location >= 0, range.length >= 0, range.location < content.length else {
- return nil
- }
- return NSRange(location: range.location, length: min(range.length, content.length - range.location))
- }
-
- private func uniqueValues(from values: [T]) -> [T] {
- values.reduce(into: [T]()) { result, value in
- if !result.contains(value) {
- result.append(value)
- }
- }
- }
-
- private func uniqueRanges(from ranges: [NSRange]) -> [NSRange] {
- ranges.reduce(into: [NSRange]()) { result, value in
- if !result.contains(value) {
- result.append(value)
- }
- }
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBPaginationCacheCoordinator.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBPaginationCacheCoordinator.swift
deleted file mode 100644
index d2a3cf8..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBPaginationCacheCoordinator.swift
+++ /dev/null
@@ -1,48 +0,0 @@
-import UIKit
-
-struct RDEPUBPaginationCacheCoordinator {
-
- private let cache: RDEPUBTextBookCache?
-
- private let layoutConfig: RDEPUBTextLayoutConfig
-
- init(cache: RDEPUBTextBookCache?, layoutConfig: RDEPUBTextLayoutConfig) {
- self.cache = cache
- self.layoutConfig = layoutConfig
- }
-
- func cacheKey(
- bookID: String,
- pageSize: CGSize,
- style: RDEPUBTextRenderStyle
- ) -> String? {
- guard let cache else { return nil }
- return cache.cacheKey(
- bookID: bookID,
- fontSize: style.font.pointSize,
- lineHeightMultiple: style.lineSpacing,
- contentInsets: layoutConfig.edgeInsets,
- pageSize: pageSize,
- layoutConfigSignature: "\(layoutConfig.cacheSignature)|font=\(style.font.fontName)"
- )
- }
-
- func load(key: String?) -> [String: RDEPUBTextChapterPaginationCache]? {
- key.flatMap { cache?.load(key: $0) }
- }
-
- func save(chapters: [RDEPUBTextChapter], key: String?) {
- guard let key else { return }
-
- let paginationCache = chapters.map { chapter in
- RDEPUBTextChapterPaginationCache(
- href: chapter.href,
- pageRanges: chapter.pages.map(\.contentRange),
- breakReasons: chapter.pages.map(\.metadata.breakReason),
-
- semanticHints: Array(Set(chapter.pages.flatMap(\.metadata.semanticHints)))
- )
- }
- cache?.save(paginationCache, key: key)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookBuilder.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookBuilder.swift
deleted file mode 100644
index a57f381..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookBuilder.swift
+++ /dev/null
@@ -1,420 +0,0 @@
-import UIKit
-
-public final class RDEPUBTextBookBuilder {
- private let renderer: RDEPUBTextRenderer
- private let cache: RDEPUBTextBookCache?
- private let layoutConfig: RDEPUBTextLayoutConfig
- private let sampler: RDEPUBTextPerformanceSampler
- private let renderPipeline: RDEPUBChapterRenderPipeline
- private let paginationPipeline: RDEPUBChapterPaginationPipeline
- private let tailNormalizer: RDEPUBChapterTailNormalizer
- private let cacheCoordinator: RDEPUBPaginationCacheCoordinator
- private let diagnosticsReporter: RDEPUBBuildDiagnosticsReporter
-
- public private(set) var lastBuildResourceDiagnostics: [RDEPUBTextResourceReferenceDiagnostic] = []
-
- public private(set) var lastBuildPaginationDiagnostics: [RDEPUBTextChapterPaginationDiagnostic] = []
-
- public private(set) var lastBuildPerformanceSamples: [RDEPUBTextPerformanceSample] = []
-
- public private(set) var lastBuildCacheStats: (hits: Int, misses: Int) = (0, 0)
-
- public init(
- renderer: RDEPUBTextRenderer,
- cache: RDEPUBTextBookCache? = nil,
- layoutConfig: RDEPUBTextLayoutConfig = .default
- ) {
- self.renderer = renderer
- self.cache = cache
- self.layoutConfig = layoutConfig
- self.sampler = RDEPUBTextPerformanceSampler()
- self.renderPipeline = RDEPUBChapterRenderPipeline(renderer: renderer)
- self.paginationPipeline = RDEPUBChapterPaginationPipeline()
- self.tailNormalizer = RDEPUBChapterTailNormalizer()
- self.cacheCoordinator = RDEPUBPaginationCacheCoordinator(cache: cache, layoutConfig: layoutConfig)
- self.diagnosticsReporter = RDEPUBBuildDiagnosticsReporter()
- }
-
- public convenience init() {
- self.init(renderer: RDEPUBDTCoreTextRenderer())
- }
-
- private var isPaginationDebugEnabled: Bool {
- ProcessInfo.processInfo.arguments.contains("--demo-pagination-debug")
- }
-
- public func phase7SemanticSummary(title: String? = nil) -> String? {
- diagnosticsReporter.phase7SemanticSummary(
- title: title,
- diagnostics: lastBuildPaginationDiagnostics
- )
- }
-
- public func build(
- parser: RDEPUBParser,
- publication: RDEPUBPublication,
- pageSize: CGSize,
- style: RDEPUBTextRenderStyle
- ) throws -> RDEPUBTextBook {
- if isPaginationDebugEnabled {
- print("[PaginationDebug] build pageSize=\(NSCoder.string(for: pageSize)) layoutInsets=\(NSCoder.string(for: layoutConfig.edgeInsets))")
- }
- var chapters: [RDEPUBTextChapter] = []
- var flatPages: [RDEPUBTextPage] = []
- lastBuildResourceDiagnostics = []
- lastBuildPaginationDiagnostics = []
- lastBuildPerformanceSamples = []
- lastBuildCacheStats = (0, 0)
- sampler.reset()
-
- let buildStart = CFAbsoluteTimeGetCurrent()
-
- let bookID = publication.metadata.identifier ?? publication.metadata.title
- let cacheKey = cacheCoordinator.cacheKey(bookID: bookID, pageSize: pageSize, style: style)
- let cachedPagination = cacheCoordinator.load(key: cacheKey)
-
- for (spineIndex, item) in publication.spine.enumerated() where item.linear {
- guard let result = try buildChapter(
- parser: parser,
- publication: publication,
- spineIndex: spineIndex,
- pageSize: pageSize,
- style: style,
- chapterIndex: chapters.count,
- absolutePageStartIndex: flatPages.count,
- cachedPagination: cachedPagination
- ) else { continue }
-
- if isPaginationDebugEnabled,
- item.href.contains("Chapter_3.xhtml") {
- let pages = result.chapter.pages
- print("[PaginationDebug] href=\(item.href) pages=\(pages.count)")
- for page in pages {
- let preview = debugPreview(for: page.content, limit: 36)
- print("[PaginationDebug] absPage=\(page.absolutePageIndex + 1) localPage=\(page.pageIndexInChapter + 1) range=\(NSStringFromRange(page.contentRange)) break=\(page.metadata.breakReason.rawValue) preview=\(preview)")
- for note in page.metadata.diagnostics.prefix(4) {
- print("[PaginationDebug] note=\(note)")
- }
- }
- }
-
- chapters.append(result.chapter)
- flatPages.append(contentsOf: result.chapter.pages)
- lastBuildResourceDiagnostics.append(contentsOf: result.resourceDiagnostics)
- lastBuildPaginationDiagnostics.append(result.paginationDiagnostic)
- sampler.record(result.performanceSample)
- if result.cacheHit {
- lastBuildCacheStats.hits += 1
- } else {
- lastBuildCacheStats.misses += 1
- }
- }
-
- let book = RDEPUBTextBook(chapters: chapters, pages: flatPages)
-
- sampler.totalBuildDuration = CFAbsoluteTimeGetCurrent() - buildStart
-
- cacheCoordinator.save(chapters: chapters, key: cacheKey)
-
- #if DEBUG
- print(sampler.summary())
- #endif
- lastBuildPerformanceSamples = sampler.samples
-
- return book
- }
-
- public func buildChapter(
- parser: RDEPUBParser,
- publication: RDEPUBPublication,
- spineIndex: Int,
- pageSize: CGSize,
- style: RDEPUBTextRenderStyle,
- chapterIndex: Int = 0,
- absolutePageStartIndex: Int = 0
- ) throws -> RDEPUBTextChapterBuildResult? {
- let bookID = publication.metadata.identifier ?? publication.metadata.title
- let cacheKey = cacheCoordinator.cacheKey(bookID: bookID, pageSize: pageSize, style: style)
- let cachedPagination = cacheCoordinator.load(key: cacheKey)
- return try buildChapter(
- parser: parser,
- publication: publication,
- spineIndex: spineIndex,
- pageSize: pageSize,
- style: style,
- chapterIndex: chapterIndex,
- absolutePageStartIndex: absolutePageStartIndex,
- cachedPagination: cachedPagination
- )
- }
-
- private func buildChapter(
- parser: RDEPUBParser,
- publication: RDEPUBPublication,
- spineIndex: Int,
- pageSize: CGSize,
- style: RDEPUBTextRenderStyle,
- chapterIndex: Int,
- absolutePageStartIndex: Int,
- cachedPagination: [String: RDEPUBTextChapterPaginationCache]?
- ) throws -> RDEPUBTextChapterBuildResult? {
- guard publication.spine.indices.contains(spineIndex) else { return nil }
- let item = publication.spine[spineIndex]
- guard item.linear,
- item.mediaType.contains("html") || item.mediaType.contains("xhtml"),
- let rawHTML = parser.htmlString(forRelativePath: item.href) else {
- return nil
- }
-
- let chapterTitle = resolvedChapterTitle(for: item, toc: publication.tableOfContents)
- let request = RDEPUBTextTypesetterPipeline().makeRequest(
- from: RDEPUBTypesettingInput(
- href: item.href,
- spineIndex: spineIndex,
- title: chapterTitle,
- rawHTML: rawHTML,
- baseURL: parser.fileURL(forRelativePath: item.href)?.deletingLastPathComponent(),
- style: style,
- resourceResolver: publication.resourceResolver,
- contentLanguageCode: publication.metadata.language,
- pageSize: pageSize,
- layoutConfig: layoutConfig
- )
- ).request
-
- let renderStart = CFAbsoluteTimeGetCurrent()
- let rendered = try renderPipeline.render(request)
- let renderDuration = CFAbsoluteTimeGetCurrent() - renderStart
-
- let plainText = rendered.attributedString.string.trimmingCharacters(in: .whitespacesAndNewlines)
- if shouldSkipChapter(item: item, content: rendered.attributedString, text: plainText) {
- if item.href.lowercased().contains("cover") {
- }
- return nil
- }
-
- let content = NSMutableAttributedString(attributedString: rendered.attributedString)
- let paginateStart = CFAbsoluteTimeGetCurrent()
- let layoutFrames: [RDEPUBTextLayoutFrame]
- let isCacheHit: Bool
-
- if isAttachmentOnlyCoverChapter(item: item, content: content, plainText: plainText) {
- layoutFrames = [
- RDEPUBTextLayoutFrame(
- contentRange: NSRange(location: 0, length: content.length),
- breakReason: .chapterEnd,
- blockRange: nil,
- attachmentRanges: attachmentRanges(in: content),
- attachmentKinds: [],
- blockKinds: [],
- semanticHints: [],
- attachmentPlacements: [],
- trailingFragmentID: nil,
- diagnostics: [
- "page break: chapterEnd",
- "cover fallback: single attachment page",
- "page range: \(NSStringFromRange(NSRange(location: 0, length: content.length)))"
- ]
- )
- ]
- isCacheHit = false
- } else if let cached = cachedPagination?[item.href] {
- layoutFrames = cached.pageRanges.enumerated().map { idx, range in
- let breakReason = idx < cached.breakReasons.count ? cached.breakReasons[idx] : .frameLimit
- return RDEPUBTextLayoutFrame(
- contentRange: range,
- breakReason: breakReason,
- blockRange: nil,
- attachmentRanges: [],
- attachmentKinds: [],
- blockKinds: [],
- semanticHints: cached.semanticHints,
- attachmentPlacements: [],
- trailingFragmentID: nil,
- diagnostics: [
- "page break: \(breakReason.rawValue)",
- "page range: \(NSStringFromRange(range))",
- "source: cache hit"
- ]
- )
- }
- isCacheHit = true
- } else {
- layoutFrames = content.length > 0
- ? paginationPipeline.frames(
- for: content,
- pageSize: pageSize,
- config: layoutConfig,
- fragmentOffsets: rendered.fragmentOffsets
- )
- : []
- isCacheHit = false
- }
-
- let paginateDuration = CFAbsoluteTimeGetCurrent() - paginateStart
-
- let normalizedFrames = tailNormalizer.normalize(
- layoutFrames,
- content: content,
- href: item.href
- )
-
- let effectiveFrames = normalizedFrames.isEmpty && content.length > 0
- ? [
- RDEPUBTextLayoutFrame(
- contentRange: NSRange(location: 0, length: content.length),
- breakReason: .chapterEnd,
- blockRange: nil,
- attachmentRanges: [],
- attachmentKinds: [],
- blockKinds: [],
- semanticHints: [],
- attachmentPlacements: [],
- trailingFragmentID: nil,
- diagnostics: [
- "page break: chapterEnd",
- "page range: \(NSStringFromRange(NSRange(location: 0, length: content.length)))"
- ]
- )
- ]
- : normalizedFrames
-
- let chapterAttributedContent = content.copy() as! NSAttributedString
- let pages = effectiveFrames.enumerated().map { localPageIndex, frame in
- let range = frame.contentRange
- return RDEPUBTextPage(
- absolutePageIndex: absolutePageStartIndex + localPageIndex,
- chapterIndex: chapterIndex,
- spineIndex: spineIndex,
- href: item.href,
- chapterTitle: chapterTitle,
- pageIndexInChapter: localPageIndex,
- totalPagesInChapter: effectiveFrames.count,
- chapterContent: chapterAttributedContent,
- contentRange: range,
- pageStartOffset: range.location,
- pageEndOffset: range.location + max(range.length - 1, 0),
- metadata: frame.metadata
- )
- }
-
- let chapter = RDEPUBTextChapter(
- chapterIndex: chapterIndex,
- spineIndex: spineIndex,
- href: item.href,
- title: chapterTitle,
- attributedContent: chapterAttributedContent,
- fragmentOffsets: rendered.fragmentOffsets,
- cfiMap: RDEPUBCFITextNodeMapBuilder.makeMap(
- href: item.href,
- rawHTML: rawHTML,
- chapterText: chapterAttributedContent.string,
- fragmentOffsets: rendered.fragmentOffsets
- ),
- pageBreakReasons: pages.map(\.metadata.breakReason),
- pages: pages
- )
- let performanceSample = RDEPUBTextPerformanceSample(
- chapterHref: item.href,
- renderDuration: renderDuration,
- paginateDuration: paginateDuration,
- pageCount: effectiveFrames.count,
- attributedStringLength: content.length,
- cacheHit: isCacheHit
- )
- let diagnostic = diagnosticsReporter.chapterDiagnostic(
- href: item.href,
- title: chapterTitle,
- pages: pages
- )
-
- return RDEPUBTextChapterBuildResult(
- chapter: chapter,
- resourceDiagnostics: rendered.resourceDiagnostics,
- paginationDiagnostic: diagnostic,
- performanceSample: performanceSample,
- cacheHit: isCacheHit
- )
- }
-
- private func resolvedChapterTitle(for item: RDEPUBSpineItem, toc: [EPUBTableOfContentsItem]) -> String {
- if let title = flattenedTOCItems(from: toc).first(where: { tocItem in
- tocItem.href.components(separatedBy: "#").first == item.href
- })?.title.trimmingCharacters(in: .whitespacesAndNewlines), !title.isEmpty {
- return title
- }
- let trimmedTitle = item.title.trimmingCharacters(in: .whitespacesAndNewlines)
- return trimmedTitle.isEmpty ? item.href : trimmedTitle
- }
-
- private func flattenedTOCItems(from items: [EPUBTableOfContentsItem]) -> [EPUBTableOfContentsItem] {
- items.flatMap { item in
- [item] + flattenedTOCItems(from: item.children)
- }
- }
-
- private func shouldSkipChapter(item: RDEPUBSpineItem, content: NSAttributedString, text: String) -> Bool {
- let lowercasedHref = item.href.lowercased()
- var hasAttachment = false
- if content.length > 0 {
- content.enumerateAttribute(.attachment, in: NSRange(location: 0, length: content.length)) { value, _, stop in
- guard value != nil else { return }
- hasAttachment = true
- stop.pointee = true
- }
- }
- if text.isEmpty && !hasAttachment && (lowercasedHref.contains("cover") || lowercasedHref.contains("title")) {
- return true
- }
- return false
- }
-
- private func attachmentCount(in content: NSAttributedString) -> Int {
- guard content.length > 0 else { return 0 }
- var count = 0
- content.enumerateAttribute(.attachment, in: NSRange(location: 0, length: content.length)) { value, _, _ in
- if value != nil {
- count += 1
- }
- }
- return count
- }
-
- private func attachmentRanges(in content: NSAttributedString) -> [NSRange] {
- guard content.length > 0 else { return [] }
- var ranges: [NSRange] = []
- content.enumerateAttribute(.attachment, in: NSRange(location: 0, length: content.length)) { value, range, _ in
- if value != nil {
- ranges.append(range)
- }
- }
- return ranges
- }
-
- private func isAttachmentOnlyCoverChapter(
- item: RDEPUBSpineItem,
- content: NSAttributedString,
- plainText: String
- ) -> Bool {
- let lowercasedHref = item.href.lowercased()
- guard lowercasedHref.contains("cover") else { return false }
- let trimmed = plainText.trimmingCharacters(in: .whitespacesAndNewlines)
- return attachmentCount(in: content) > 0 && trimmed.count <= 1
- }
-
- private func debugPreview(for content: NSAttributedString, limit: Int) -> String {
-
- let collapsed = content.string
- .replacingOccurrences(of: "\n", with: " ")
- .replacingOccurrences(of: "\r", with: " ")
- .replacingOccurrences(of: "\t", with: " ")
- .trimmingCharacters(in: .whitespacesAndNewlines)
- guard !collapsed.isEmpty else { return "" }
- if collapsed.count <= limit {
- return collapsed
- }
- let head = collapsed.prefix(limit)
- return "\(head)…"
- }
-
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookCache.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookCache.swift
deleted file mode 100644
index 6728e52..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookCache.swift
+++ /dev/null
@@ -1,205 +0,0 @@
-import Foundation
-import CryptoKit
-
-public struct RDEPUBTextChapterPaginationCache: Equatable {
-
- public var href: String
-
- public var pageRanges: [NSRange]
-
- public var breakReasons: [RDEPUBTextPageBreakReason]
-
- public var semanticHints: [RDEPUBTextSemanticHint]
-
- public init(
- href: String,
- pageRanges: [NSRange],
- breakReasons: [RDEPUBTextPageBreakReason],
- semanticHints: [RDEPUBTextSemanticHint]
- ) {
- self.href = href
- self.pageRanges = pageRanges
- self.breakReasons = breakReasons
- self.semanticHints = semanticHints
- }
-}
-
-final class PaginationCacheArchive: NSObject, NSSecureCoding {
-
- static var supportsSecureCoding: Bool { true }
-
- let chapters: [ChapterPaginationArchive]
-
- init(chapters: [ChapterPaginationArchive]) {
- self.chapters = chapters
- }
-
- func encode(with coder: NSCoder) {
- coder.encode(chapters, forKey: "chapters")
- }
-
- required init?(coder: NSCoder) {
- guard let chapters = coder.decodeObject(of: [NSArray.self, ChapterPaginationArchive.self], forKey: "chapters") as? [ChapterPaginationArchive] else { return nil }
- self.chapters = chapters
- }
-}
-
-final class ChapterPaginationArchive: NSObject, NSSecureCoding {
-
- static var supportsSecureCoding: Bool { true }
-
- let href: String
-
- let rangeLocations: [NSNumber]
-
- let rangeLengths: [NSNumber]
-
- let breakReasons: [String]
-
- let semanticHints: [String]
-
- init(from cache: RDEPUBTextChapterPaginationCache) {
- self.href = cache.href
- self.rangeLocations = cache.pageRanges.map { NSNumber(value: $0.location) }
- self.rangeLengths = cache.pageRanges.map { NSNumber(value: $0.length) }
- self.breakReasons = cache.breakReasons.map(\.rawValue)
- self.semanticHints = cache.semanticHints.map(\.rawValue)
- }
-
- func encode(with coder: NSCoder) {
- coder.encode(href, forKey: "href")
- coder.encode(rangeLocations, forKey: "rangeLocations")
- coder.encode(rangeLengths, forKey: "rangeLengths")
- coder.encode(breakReasons, forKey: "breakReasons")
- coder.encode(semanticHints, forKey: "semanticHints")
- }
-
- required init?(coder: NSCoder) {
- guard let href = coder.decodeObject(of: NSString.self, forKey: "href") as String?,
- let rangeLocations = coder.decodeObject(of: [NSArray.self, NSNumber.self], forKey: "rangeLocations") as? [NSNumber],
- let rangeLengths = coder.decodeObject(of: [NSArray.self, NSNumber.self], forKey: "rangeLengths") as? [NSNumber],
- let breakReasons = coder.decodeObject(of: [NSArray.self, NSString.self], forKey: "breakReasons") as? [String],
- let semanticHints = coder.decodeObject(of: [NSArray.self, NSString.self], forKey: "semanticHints") as? [String] else {
- return nil
- }
- self.href = href
- self.rangeLocations = rangeLocations
- self.rangeLengths = rangeLengths
- self.breakReasons = breakReasons
- self.semanticHints = semanticHints
- }
-
- func toCache() -> RDEPUBTextChapterPaginationCache {
- let pageRanges = zip(rangeLocations, rangeLengths).map { loc, len in
- NSRange(location: loc.intValue, length: len.intValue)
- }
- return RDEPUBTextChapterPaginationCache(
- href: href,
- pageRanges: pageRanges,
- breakReasons: breakReasons.compactMap(RDEPUBTextPageBreakReason.init(rawValue:)),
- semanticHints: semanticHints.compactMap(RDEPUBTextSemanticHint.init(rawValue:))
- )
- }
-}
-
-public final class RDEPUBTextBookCache {
-
- public var schemaVersion: Int = 14
-
- private let queue = DispatchQueue(label: "com.RDEpubReader.textbookcache", qos: .utility)
-
- private let cacheDirectory: URL
-
- public init(subdirectory: String = "RDEPUBTextBookCache") {
- let baseURL = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first?
- .appendingPathComponent(subdirectory, isDirectory: true)
- ?? FileManager.default.temporaryDirectory.appendingPathComponent(subdirectory, isDirectory: true)
- self.cacheDirectory = baseURL
- try? FileManager.default.createDirectory(at: cacheDirectory, withIntermediateDirectories: true)
- }
-
- public func cacheKey(
- bookID: String,
- fontSize: CGFloat,
- lineHeightMultiple: CGFloat,
- contentInsets: UIEdgeInsets,
- pageSize: CGSize,
- layoutConfigSignature: String = RDEPUBTextLayoutConfig.default.cacheSignature
- ) -> String {
- let raw = "\(bookID)_\(fontSize)_\(lineHeightMultiple)_\(contentInsets.top)_\(contentInsets.left)_\(contentInsets.bottom)_\(contentInsets.right)_\(pageSize.width)_\(pageSize.height)_\(layoutConfigSignature)_v\(schemaVersion)"
- let digest = SHA256.hash(data: Data(raw.utf8))
- let hex = digest.map { String(format: "%02x", $0) }.joined()
- return hex + ".cache"
- }
-
- public func load(key: String) -> [String: RDEPUBTextChapterPaginationCache]? {
- queue.sync {
- let fileURL = cacheDirectory.appendingPathComponent(key)
- guard FileManager.default.fileExists(atPath: fileURL.path) else {
- #if DEBUG
-// print("[Cache] load MISS key=\(key)")
- #endif
- return nil
- }
- do {
- let data = try Data(contentsOf: fileURL)
- guard let archive = try NSKeyedUnarchiver.unarchivedObject(
- ofClass: PaginationCacheArchive.self,
- from: data
- ) else {
- #if DEBUG
-// print("[Cache] load MISS key=\(key) (unarchive returned nil)")
- #endif
- return nil
- }
- var result: [String: RDEPUBTextChapterPaginationCache] = [:]
- for chapter in archive.chapters {
- result[chapter.href] = chapter.toCache()
- }
- #if DEBUG
-// print("[Cache] load HIT key=\(key) chapters=\(result.count)")
- #endif
- return result
- } catch {
- #if DEBUG
-// print("[Cache] load MISS key=\(key) error=\(error)")
- #endif
- return nil
- }
- }
- }
-
- public func save(_ chapters: [RDEPUBTextChapterPaginationCache], key: String) {
- queue.sync {
- let fileURL = cacheDirectory.appendingPathComponent(key)
- do {
- let archives = chapters.map { ChapterPaginationArchive(from: $0) }
- let bookArchive = PaginationCacheArchive(chapters: archives)
- let data = try NSKeyedArchiver.archivedData(withRootObject: bookArchive, requiringSecureCoding: true)
- try data.write(to: fileURL, options: .atomic)
- #if DEBUG
- print("[Cache] save key=\(key) chapters=\(chapters.count)")
- #endif
- } catch {
- #if DEBUG
- print("[Cache] save FAILED key=\(key) error=\(error)")
- #endif
- }
- }
- }
-
- public func invalidateAll() {
- queue.sync {
- let fileManager = FileManager.default
- guard let contents = try? fileManager.contentsOfDirectory(at: cacheDirectory, includingPropertiesForKeys: nil) else {
- return
- }
- for file in contents {
- try? fileManager.removeItem(at: file)
- }
- #if DEBUG
- print("[Cache] invalidateAll")
- #endif
- }
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookModels.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookModels.swift
deleted file mode 100644
index bf24607..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBookModels.swift
+++ /dev/null
@@ -1,193 +0,0 @@
-import UIKit
-
-public struct RDEPUBTextChapterPaginationDiagnostic: Equatable {
-
- public var href: String
-
- public var title: String
-
- public var pageCount: Int
-
- public var breakReasons: [RDEPUBTextPageBreakReason]
-
- public var attachmentPageCount: Int
-
- public var blockAdjustedPageCount: Int
-
- public var blockKinds: [RDEPUBTextBlockKind]
-
- public var semanticHints: [RDEPUBTextSemanticHint]
-
- public var attachmentPlacements: [RDEPUBTextAttachmentPlacement]
-
- public var sampleNotes: [String]
-}
-
-public struct RDEPUBTextChapterBuildResult {
-
- public var chapter: RDEPUBTextChapter
-
- public var resourceDiagnostics: [RDEPUBTextResourceReferenceDiagnostic]
-
- public var paginationDiagnostic: RDEPUBTextChapterPaginationDiagnostic
-
- public var performanceSample: RDEPUBTextPerformanceSample
-
- public var cacheHit: Bool
-}
-
-public struct RDEPUBTextPage: Equatable {
-
- public var absolutePageIndex: Int
-
- public var chapterIndex: Int
-
- public var spineIndex: Int
-
- public var href: String
-
- public var chapterTitle: String
-
- public var pageIndexInChapter: Int
-
- public var totalPagesInChapter: Int
-
- public var chapterContent: NSAttributedString
-
- /// Page substring derived on demand from `chapterContent` + `contentRange`.
- /// Not stored: keeping a per-page substring alive roughly doubles the
- /// chapter's resident text memory across the chapter cache window.
- public var content: NSAttributedString {
- let bounds = NSRange(location: 0, length: chapterContent.length)
- let clamped = NSIntersectionRange(contentRange, bounds)
- guard clamped.length > 0 else { return NSAttributedString() }
- return chapterContent.attributedSubstring(from: clamped)
- }
-
- public var contentRange: NSRange
-
- public var pageStartOffset: Int
-
- public var pageEndOffset: Int
-
- public var metadata: RDEPUBTextPageMetadata
-}
-
-public struct RDEPUBTextChapter: Equatable {
-
- public var chapterIndex: Int
-
- public var spineIndex: Int
-
- public var href: String
-
- public var title: String
-
- public var attributedContent: NSAttributedString
-
- public var fragmentOffsets: [String: Int]
-
- public var cfiMap: RDEPUBCFIMap?
-
- public var pageBreakReasons: [RDEPUBTextPageBreakReason]
-
- public var pages: [RDEPUBTextPage]
-}
-
-public struct RDEPUBTextBook {
-
- public var chapters: [RDEPUBTextChapter]
-
- public var pages: [RDEPUBTextPage]
-
- public let indexTable: RDEPUBTextIndexTable
-
- public var positionConverter: RDEPUBTextPositionConverter {
- RDEPUBTextPositionConverter(book: self)
- }
-
- public init(chapters: [RDEPUBTextChapter], pages: [RDEPUBTextPage]) {
- self.chapters = chapters
- self.pages = pages
- self.indexTable = RDEPUBTextIndexTable(chapters: chapters)
- }
-
- public static func == (lhs: RDEPUBTextBook, rhs: RDEPUBTextBook) -> Bool {
- lhs.chapters == rhs.chapters && lhs.pages == rhs.pages
- }
-
- public func chapterData(for href: String) -> RDEPUBChapterData? {
- guard let chapter = chapters.first(where: { $0.href == href }) else { return nil }
- return RDEPUBChapterData(chapter: chapter, indexTable: indexTable)
- }
-
- public func chapterData(forSpineIndex spineIndex: Int) -> RDEPUBChapterData? {
- guard let chapter = chapters.first(where: { $0.spineIndex == spineIndex }) else { return nil }
- return RDEPUBChapterData(chapter: chapter, indexTable: indexTable)
- }
-
- public func chapterData(atChapterIndex index: Int) -> RDEPUBChapterData? {
- guard chapters.indices.contains(index) else { return nil }
- return RDEPUBChapterData(chapter: chapters[index], indexTable: indexTable)
- }
-
- public func chapterData(forPageNumber pageNumber: Int) -> RDEPUBChapterData? {
- guard let page = page(at: pageNumber) else { return nil }
- return chapterData(forSpineIndex: page.spineIndex)
- }
-
- public func chapterData(
- for location: RDEPUBLocation,
- resolver: RDEPUBResourceResolver,
- bookIdentifier: String?
- ) -> RDEPUBChapterData? {
- guard let normalizedLocation = resolver.normalizedLocation(location, bookIdentifier: bookIdentifier) else {
- return nil
- }
- return chapterData(for: normalizedLocation.href)
- }
-
- public var chapterInfos: [EPUBChapterInfo] {
- chapters.map { chapter in
- EPUBChapterInfo(
- spineIndex: chapter.spineIndex,
- title: chapter.title,
- pageCount: chapter.pages.count
- )
- }
- }
-
- public func page(at pageNumber: Int) -> RDEPUBTextPage? {
- guard pageNumber > 0, pages.indices.contains(pageNumber - 1) else {
- return nil
- }
- return pages[pageNumber - 1]
- }
-
- public func pageNumber(for location: RDEPUBLocation, resolver: RDEPUBResourceResolver, bookIdentifier: String?) -> Int? {
- guard let normalizedLocation = resolver.normalizedLocation(location, bookIdentifier: bookIdentifier),
- let chapterData = chapterData(for: normalizedLocation.href) else {
- return nil
- }
-
- if let anchor = normalizedLocation.rangeAnchor?.start,
- let page = positionConverter.pageNumber(for: anchor) {
- return page
- }
-
- if let anchor = indexTable.anchor(for: normalizedLocation),
- let page = positionConverter.pageNumber(for: anchor) {
- return page
- }
-
- return chapterData.pageNumber(for: normalizedLocation)
- }
-
- public func location(forPageNumber pageNumber: Int, bookIdentifier: String?) -> RDEPUBLocation? {
- guard let chapterData = chapterData(forPageNumber: pageNumber),
- let page = page(at: pageNumber) else {
- return nil
- }
- return chapterData.location(forPage: page, bookIdentifier: bookIdentifier)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBuildPipelineInterfaces.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBuildPipelineInterfaces.swift
deleted file mode 100644
index 19074f6..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextBuildPipelineInterfaces.swift
+++ /dev/null
@@ -1,48 +0,0 @@
-
-import UIKit
-
-protocol RDEPUBTextBookBuilding {
-
- func build(
- parser: RDEPUBParser,
- publication: RDEPUBPublication,
- pageSize: CGSize,
- style: RDEPUBTextRenderStyle
- ) throws -> RDEPUBTextBook
-}
-
-struct RDEPUBChapterRenderPipeline {
- private let renderer: RDEPUBTextRenderer
-
- init(renderer: RDEPUBTextRenderer) {
- self.renderer = renderer
- }
-
- func render(_ request: RDEPUBTextChapterRenderRequest) throws -> RDEPUBRenderedChapterContent {
- try renderer.renderChapter(request: request)
- }
-}
-
-struct RDEPUBChapterPaginationPipeline {
- private let frameFactory: RDEPUBPageFrameBuilding
-
- init(frameFactory: RDEPUBPageFrameBuilding = RDEPUBCoreTextPageFrameFactory()) {
- self.frameFactory = frameFactory
- }
-
- func frames(
- for content: NSAttributedString,
- pageSize: CGSize,
- config: RDEPUBTextLayoutConfig,
- fragmentOffsets: [String: Int]
- ) -> [RDEPUBTextLayoutFrame] {
- frameFactory.makeFrames(
- attributedString: content,
- pageSize: pageSize,
- config: config,
- fragmentOffsets: fragmentOffsets
- )
- }
-}
-
-extension RDEPUBTextBookBuilder: RDEPUBTextBookBuilding {}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextPerformanceSampler.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextPerformanceSampler.swift
deleted file mode 100644
index ac974d5..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/BuildPipeline/RDEPUBTextPerformanceSampler.swift
+++ /dev/null
@@ -1,64 +0,0 @@
-import Foundation
-
-public struct RDEPUBTextPerformanceSample: Equatable {
-
- public var chapterHref: String
-
- public var renderDuration: TimeInterval
-
- public var paginateDuration: TimeInterval
-
- public var pageCount: Int
-
- public var attributedStringLength: Int
-
- public var cacheHit: Bool
-
- public init(
- chapterHref: String,
- renderDuration: TimeInterval,
- paginateDuration: TimeInterval,
- pageCount: Int,
- attributedStringLength: Int,
- cacheHit: Bool
- ) {
- self.chapterHref = chapterHref
- self.renderDuration = renderDuration
- self.paginateDuration = paginateDuration
- self.pageCount = pageCount
- self.attributedStringLength = attributedStringLength
- self.cacheHit = cacheHit
- }
-}
-
-public final class RDEPUBTextPerformanceSampler {
-
- public private(set) var samples: [RDEPUBTextPerformanceSample] = []
-
- public var totalBuildDuration: TimeInterval = 0
-
- public init() {}
-
- public func record(_ sample: RDEPUBTextPerformanceSample) {
- samples.append(sample)
- #if DEBUG
- print("[PERF] \(sample.chapterHref): render=\(formatMS(sample.renderDuration)) paginate=\(formatMS(sample.paginateDuration)) pages=\(sample.pageCount) cache=\(sample.cacheHit ? "HIT" : "MISS")")
- #endif
- }
-
- public func summary() -> String {
- let totalRender = samples.reduce(0) { $0 + $1.renderDuration }
- let totalPaginate = samples.reduce(0) { $0 + $1.paginateDuration }
- let hitCount = samples.filter(\.cacheHit).count
- return "[PERF] chapters=\(samples.count) render=\(formatMS(totalRender)) paginate=\(formatMS(totalPaginate)) total=\(formatMS(totalBuildDuration)) cacheHits=\(hitCount)/\(samples.count)"
- }
-
- public func reset() {
- samples.removeAll()
- totalBuildDuration = 0
- }
-
- private func formatMS(_ duration: TimeInterval) -> String {
- String(format: "%.0fms", duration * 1000)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBChapterPageCounter.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBChapterPageCounter.swift
deleted file mode 100644
index b1bdff4..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBChapterPageCounter.swift
+++ /dev/null
@@ -1,271 +0,0 @@
-import CoreText
-import UIKit
-
-#if canImport(DTCoreText)
-import DTCoreText
-#endif
-
-struct RDEPUBChapterPageCounter {
-
- private let factory: RDEPUBCoreTextPageFrameFactory
-
- private let attributedString: NSAttributedString
-
- private let pageSize: CGSize
-
- private let config: RDEPUBTextLayoutConfig
-
- private let pageBreakPolicy: RDEPUBPageBreakPolicy
-
- private let framesetter: CTFramesetter
-
- private let dtLayoutRect: CGRect
-
- init(factory: RDEPUBCoreTextPageFrameFactory) {
- self.factory = factory
- self.attributedString = factory.attributedString
- self.pageSize = factory.pageSize
- self.config = factory.config
- self.pageBreakPolicy = RDEPUBPageBreakPolicy(attributedString: factory.attributedString)
- self.framesetter = CTFramesetterCreateWithAttributedString(factory.attributedString)
- self.dtLayoutRect = factory.config.contentRect(fallback: factory.pageSize)
- }
-
- func layoutFrames(fragmentOffsets: [String: Int] = [:]) -> [RDEPUBTextLayoutFrame] {
- guard attributedString.length > 0, pageSize.width > 0, pageSize.height > 0 else {
- return []
- }
-
-#if canImport(DTCoreText)
- return layoutFramesUsingDTCoreText(fragmentOffsets: fragmentOffsets)
-#else
- return layoutFramesUsingCoreText(fragmentOffsets: fragmentOffsets)
-#endif
- }
-
- private func layoutFramesUsingCoreText(fragmentOffsets: [String: Int]) -> [RDEPUBTextLayoutFrame] {
- guard attributedString.length > 0, pageSize.width > 0, pageSize.height > 0 else {
- return []
- }
-
- var frames: [RDEPUBTextLayoutFrame] = []
- var location = 0
- let resolvedSize = config.resolvedFrameSize(fallback: pageSize)
- let contentRect = config.contentRect(fallback: resolvedSize)
-
- guard contentRect.width > 0, contentRect.height > 0 else {
- return []
- }
-
- while location < attributedString.length {
- let framePath = RDEPUBCoreTextPageFrameFactory.makeLayoutPath(
- pageSize: resolvedSize,
- config: config
- )
- let frame = CTFramesetterCreateFrame(
- framesetter,
- CFRangeMake(location, 0),
- framePath,
- nil
- )
- let proposedRange = proposedVisibleRange(
- from: frame,
- start: location,
- totalLength: attributedString.length
- )
- guard proposedRange.length > 0 else {
- break
- }
-
- let avoidAdjusted = factory.trimmedRangeForAvoidPageBreakInside(from: frame, proposed: proposedRange)
- let keepWithNextAdjusted = factory.trimmedRangeForKeepWithNext(from: frame, proposed: avoidAdjusted)
- let lineRanges = RDEPUBCoreTextPageFrameFactory.lineRanges(from: frame)
- let widowOrphanAdjusted = factory.trimmedRangeForWidowAndOrphanControl(
- proposed: keepWithNextAdjusted,
- lineRanges: lineRanges
- )
- let effectiveLineRanges = lineRangesWithinRange(lineRanges, range: widowOrphanAdjusted)
-
- let adjusted = pageBreakPolicy.adjustedRange(
- from: widowOrphanAdjusted,
- totalLength: attributedString.length,
- lineRanges: effectiveLineRanges,
- factory: factory
- )
- let trailingFragmentID = factory.nearestTrailingFragmentID(
- endingAt: adjusted.range.location + adjusted.range.length,
- fragmentOffsets: fragmentOffsets
- )
- frames.append(
- RDEPUBTextLayoutFrame(
- contentRange: adjusted.range,
- breakReason: adjusted.breakReason,
- blockRange: adjusted.blockRange,
- attachmentRanges: adjusted.attachmentRanges,
- attachmentKinds: adjusted.attachmentKinds,
- blockKinds: adjusted.blockKinds,
- semanticHints: adjusted.semanticHints,
- attachmentPlacements: adjusted.attachmentPlacements,
- trailingFragmentID: trailingFragmentID,
- diagnostics: adjusted.diagnostics
- )
- )
-
- let nextLocation = adjusted.range.location + adjusted.range.length
- guard nextLocation > location else {
- location += max(proposedRange.length, 1)
- continue
- }
- location = nextLocation
- }
-
- return frames
- }
-
-#if canImport(DTCoreText)
-
- private func layoutFramesUsingDTCoreText(fragmentOffsets: [String: Int]) -> [RDEPUBTextLayoutFrame] {
- guard config.numberOfColumns == 1 else {
- return layoutFramesUsingCoreText(fragmentOffsets: fragmentOffsets)
- }
-
- guard let layouter = DTCoreTextLayouter(attributedString: attributedString) else {
- return layoutFramesUsingCoreText(fragmentOffsets: fragmentOffsets)
- }
-
- layouter.shouldCacheLayoutFrames = false
-
- var frames: [RDEPUBTextLayoutFrame] = []
- var location = 0
- let pageRect = dtLayoutRect
- let isDebug = ProcessInfo.processInfo.arguments.contains("--demo-pagination-debug")
- if isDebug {
- print("[PAGINATION-DEBUG] pageRect=\(pageRect) totalLength=\(attributedString.length)")
- }
-
- while location < attributedString.length {
- guard let layoutFrame = layouter.layoutFrame(with: pageRect, range: NSRange(location: location, length: 0)) else {
- break
- }
-
- let visibleRange = layoutFrame.visibleStringRange()
- guard visibleRange.length > 0 else {
- break
- }
-
- let proposedRange = NSRange(location: location, length: visibleRange.length)
- let avoidAdjusted = factory.trimmedRangeForAvoidPageBreakInside(from: layoutFrame, proposed: proposedRange)
- let lineAdjusted = factory.trimmedRangeForKeepWithNext(from: layoutFrame, proposed: avoidAdjusted)
- let lineRanges = RDEPUBCoreTextPageFrameFactory.lineRanges(from: layoutFrame)
- let widowOrphanAdjusted = factory.trimmedRangeForWidowAndOrphanControl(
- proposed: lineAdjusted,
- lineRanges: lineRanges
- )
-
- if isDebug {
- let pageCount = frames.count + 1
- let previewText = (attributedString.string as NSString).substring(with: NSRange(location: location, length: min(20, attributedString.length - location)))
- let avoidRemoved = proposedRange.length - avoidAdjusted.length
- let kwNextRemoved = avoidAdjusted.length - lineAdjusted.length
- let widowRemoved = lineAdjusted.length - widowOrphanAdjusted.length
- let totalRemoved = proposedRange.length - widowOrphanAdjusted.length
- print("[PAGINATION-DEBUG] page#\(pageCount) loc=\(location) proposed=\(proposedRange.length) avoid(-\(avoidRemoved)) kwNext(-\(kwNextRemoved)) widowOrphan(-\(widowRemoved)) total(-\(totalRemoved)) lastLine=\"\(previewText)\"")
- }
- let effectiveLineRanges = lineRangesWithinRange(lineRanges, range: widowOrphanAdjusted)
- let adjusted = pageBreakPolicy.adjustedRange(
- from: widowOrphanAdjusted,
- totalLength: attributedString.length,
- lineRanges: effectiveLineRanges,
- factory: factory
- )
- let verifiedRange: NSRange
- if adjusted.breakReason == .attachmentBoundary {
- verifiedRange = verifiedDisplayRange(for: adjusted.range)
- } else {
- verifiedRange = adjusted.range
- }
- let trailingFragmentID = factory.nearestTrailingFragmentID(
- endingAt: verifiedRange.location + verifiedRange.length,
- fragmentOffsets: fragmentOffsets
- )
- let diagnostics = verifiedRange == adjusted.range
- ? adjusted.diagnostics
- : adjusted.diagnostics + ["verified-display-range \(NSStringFromRange(adjusted.range)) -> \(NSStringFromRange(verifiedRange))"]
-
- frames.append(
- RDEPUBTextLayoutFrame(
- contentRange: verifiedRange,
- breakReason: adjusted.breakReason,
- blockRange: factory.blockRange(at: max(verifiedRange.location, verifiedRange.location + verifiedRange.length - 1)),
- attachmentRanges: factory.attachmentRanges(in: verifiedRange),
- attachmentKinds: factory.attachmentKinds(in: verifiedRange),
- blockKinds: factory.blockKinds(in: verifiedRange),
- semanticHints: factory.semanticHints(in: verifiedRange),
- attachmentPlacements: factory.attachmentPlacements(in: verifiedRange),
- trailingFragmentID: trailingFragmentID,
- diagnostics: diagnostics
- )
- )
-
- let nextLocation = verifiedRange.location + verifiedRange.length
- guard nextLocation > location else {
- location += max(visibleRange.length, 1)
- continue
- }
- location = nextLocation
- }
-
- return frames
- }
-
- private func verifiedDisplayRange(for range: NSRange) -> NSRange {
- guard let clampedRange = factory.clampedRange(range),
- clampedRange.length > 0,
- !factory.attachmentRanges(in: clampedRange).isEmpty else {
- return range
- }
-
- let pageContent = attributedString.attributedSubstring(from: clampedRange)
- guard let layouter = DTCoreTextLayouter(attributedString: pageContent) else {
- return clampedRange
- }
-
- layouter.shouldCacheLayoutFrames = false
- guard let layoutFrame = layouter.layoutFrame(with: dtLayoutRect, range: NSRange(location: 0, length: 0)) else {
- return clampedRange
- }
-
- let visibleRange = layoutFrame.visibleStringRange()
- guard visibleRange.length > 0, visibleRange.length < clampedRange.length else {
- return clampedRange
- }
-
- return NSRange(location: clampedRange.location, length: visibleRange.length)
- }
-#endif
-
- private func proposedVisibleRange(
- from frame: CTFrame,
- start location: Int,
- totalLength: Int
- ) -> NSRange {
- let visibleRange = CTFrameGetVisibleStringRange(frame)
- guard visibleRange.length > 0 else {
- return NSRange(location: location, length: 0)
- }
-
- let resolvedLocation = max(location, visibleRange.location)
- let visibleEnd = visibleRange.location + visibleRange.length
- let length = min(max(visibleEnd - resolvedLocation, 0), totalLength - resolvedLocation)
- guard length > 0 else {
- return NSRange(location: resolvedLocation, length: 0)
- }
- return NSRange(location: resolvedLocation, length: length)
- }
-
- private func lineRangesWithinRange(_ lineRanges: [NSRange], range: NSRange) -> [NSRange] {
- lineRanges.filter { lineRange in
- lineRange.location >= range.location && NSMaxRange(lineRange) <= NSMaxRange(range)
- }
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBCoreTextPageFrameFactory.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBCoreTextPageFrameFactory.swift
deleted file mode 100644
index 893fcdc..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBCoreTextPageFrameFactory.swift
+++ /dev/null
@@ -1,499 +0,0 @@
-import CoreText
-import UIKit
-
-#if canImport(DTCoreText)
-import DTCoreText
-#endif
-
-struct RDEPUBCoreTextPageFrameFactory: RDEPUBPageFrameBuilding {
-
- let attributedString: NSAttributedString
-
- let pageSize: CGSize
-
- let config: RDEPUBTextLayoutConfig
-
- private let pageBreakPolicy: RDEPUBPageBreakPolicy
-
- init(attributedString: NSAttributedString, pageSize: CGSize, config: RDEPUBTextLayoutConfig = .default) {
- self.attributedString = attributedString
- self.pageSize = pageSize
- self.config = config
- self.pageBreakPolicy = RDEPUBPageBreakPolicy(attributedString: attributedString)
- }
-
- init() {
- self.init(attributedString: NSAttributedString(), pageSize: .zero, config: .default)
- }
-
- func makeFrames(
- attributedString: NSAttributedString,
- pageSize: CGSize,
- config: RDEPUBTextLayoutConfig,
- fragmentOffsets: [String: Int]
- ) -> [RDEPUBTextLayoutFrame] {
- let factory = RDEPUBCoreTextPageFrameFactory(attributedString: attributedString, pageSize: pageSize, config: config)
- let counter = RDEPUBChapterPageCounter(factory: factory)
- return counter.layoutFrames(fragmentOffsets: fragmentOffsets)
- }
-
- static func makeLayoutPath(pageSize: CGSize, config: RDEPUBTextLayoutConfig) -> CGPath {
- let columnRects = config.columnRects(fallback: pageSize)
- guard columnRects.count > 1 else {
- return CGPath(rect: columnRects.first ?? CGRect(origin: .zero, size: pageSize), transform: nil)
- }
-
- let path = CGMutablePath()
- for rect in columnRects {
- path.addRect(rect)
- }
- return path
- }
-
- func trimmedRangeForAvoidPageBreakInside(
- from frame: CTFrame,
- proposed: NSRange
- ) -> NSRange {
- guard config.avoidPageBreakInsideEnabled else { return proposed }
-
- let lines = CTFrameGetLines(frame) as! [CTLine]
- guard !lines.isEmpty else { return proposed }
-
- let lineRanges = lines.map {
- let range = CTLineGetStringRange($0)
- return NSRange(location: range.location, length: range.length)
- }
- return trimmedRangeForAvoidPageBreakInside(proposed: proposed, lineRanges: lineRanges)
- }
-
- func trimmedRangeForKeepWithNext(
- from frame: CTFrame,
- proposed: NSRange
- ) -> NSRange {
- let lines = CTFrameGetLines(frame) as! [CTLine]
- let lineRanges = lines.map {
- let range = CTLineGetStringRange($0)
- return NSRange(location: range.location, length: range.length)
- }
- return trimmedRangeForKeepWithNext(proposed: proposed, lineRanges: lineRanges)
- }
-
-#if canImport(DTCoreText)
-
- func trimmedRangeForAvoidPageBreakInside(
- from layoutFrame: DTCoreTextLayoutFrame,
- proposed: NSRange
- ) -> NSRange {
- guard config.avoidPageBreakInsideEnabled else { return proposed }
-
- guard let lines = layoutFrame.lines as? [DTCoreTextLayoutLine], !lines.isEmpty else {
- return proposed
- }
- let lineRanges = lines.map { $0.stringRange() }
- return trimmedRangeForAvoidPageBreakInside(proposed: proposed, lineRanges: lineRanges)
- }
-
- func trimmedRangeForKeepWithNext(
- from layoutFrame: DTCoreTextLayoutFrame,
- proposed: NSRange
- ) -> NSRange {
- guard let lines = layoutFrame.lines as? [DTCoreTextLayoutLine], !lines.isEmpty else {
- return proposed
- }
- let lineRanges = lines.map { $0.stringRange() }
- return trimmedRangeForKeepWithNext(proposed: proposed, lineRanges: lineRanges)
- }
-#endif
-
- func trimmedRangeForAvoidPageBreakInside(
- proposed: NSRange,
- lineRanges: [NSRange]
- ) -> NSRange {
- guard config.avoidPageBreakInsideEnabled, !lineRanges.isEmpty else { return proposed }
-
- let kMaxLinesToRemove = 3
- var linesToRemove = 0
-
- for lineRange in lineRanges.reversed() {
- if pageBreakPolicy.lineIsInAvoidPageBreakInsideBlock(lineRange) {
- linesToRemove += 1
- if linesToRemove >= kMaxLinesToRemove {
- linesToRemove = kMaxLinesToRemove
- break
- }
- } else {
- break
- }
- }
-
- guard linesToRemove > 0 else { return proposed }
-
- let validLineCount = lineRanges.count - linesToRemove
- guard validLineCount > 0 else { return proposed }
-
- let lastValidLine = lineRanges[validLineCount - 1]
- let endLocation = lastValidLine.location + lastValidLine.length
- let adjustedLength = endLocation - proposed.location
- guard adjustedLength > 0 else { return proposed }
-
- if ProcessInfo.processInfo.arguments.contains("--demo-pagination-debug") {
- let removedText = (attributedString.string as NSString).substring(with: NSRange(location: endLocation, length: min(proposed.length - adjustedLength, 40)))
- print("[PAGINATION-DEBUG] avoidPageBreakInside removed \(linesToRemove) lines: \"\(removedText)\"")
- }
-
- return NSRange(location: proposed.location, length: adjustedLength)
- }
-
- func trimmedRangeForKeepWithNext(
- proposed: NSRange,
- lineRanges: [NSRange]
- ) -> NSRange {
- guard !lineRanges.isEmpty else { return proposed }
-
- let kMaxLinesToRemove = 3
- var linesToRemove = 0
-
- for lineRange in lineRanges.reversed() {
- if pageBreakPolicy.lineIsInKeepWithNextBlock(lineRange) {
- linesToRemove += 1
- if linesToRemove >= kMaxLinesToRemove {
- linesToRemove = kMaxLinesToRemove
- break
- }
- } else {
- break
- }
- }
-
- guard linesToRemove > 0 else { return proposed }
-
- let validLineCount = lineRanges.count - linesToRemove
- guard validLineCount > 0 else { return proposed }
-
- let lastValidLine = lineRanges[validLineCount - 1]
- let endLocation = lastValidLine.location + lastValidLine.length
- let adjustedLength = endLocation - proposed.location
- guard adjustedLength > 0 else { return proposed }
-
- if ProcessInfo.processInfo.arguments.contains("--demo-pagination-debug") {
- let removedText = (attributedString.string as NSString).substring(with: NSRange(location: endLocation, length: min(proposed.length - adjustedLength, 40)))
- print("[PAGINATION-DEBUG] keepWithNext removed \(linesToRemove) lines: \"\(removedText)\"")
- }
-
- return NSRange(location: proposed.location, length: adjustedLength)
- }
-
- func trimmedRangeForWidowAndOrphanControl(
- proposed: NSRange,
- lineRanges: [NSRange]
- ) -> NSRange {
- guard !lineRanges.isEmpty else { return proposed }
- guard config.avoidWidows || config.avoidOrphans else { return proposed }
-
- var adjusted = proposed
- var visibleLines = lineRanges
-
- if config.avoidWidows,
- let widowAdjusted = trimmedRangeAvoidingWidow(
- proposed: adjusted,
- lineRanges: visibleLines
- ),
- widowAdjusted != adjusted {
- adjusted = widowAdjusted
- visibleLines = Array(visibleLines.dropLast())
- }
-
- if config.avoidOrphans,
- let orphanAdjusted = trimmedRangeAvoidingOrphan(
- proposed: adjusted,
- lineRanges: visibleLines
- ) {
- adjusted = orphanAdjusted
- }
-
- return adjusted
- }
-
- static func lineRanges(from frame: CTFrame) -> [NSRange] {
- let lines = CTFrameGetLines(frame) as! [CTLine]
- return lines.map {
- let lineRange = CTLineGetStringRange($0)
- return NSRange(location: lineRange.location, length: lineRange.length)
- }
- }
-
-#if canImport(DTCoreText)
-
- static func lineRanges(from layoutFrame: DTCoreTextLayoutFrame) -> [NSRange] {
- guard let lines = layoutFrame.lines as? [DTCoreTextLayoutLine] else {
- return []
- }
- return lines.map { $0.stringRange() }
- }
-#endif
-
- func blockRange(at location: Int) -> NSRange? {
- guard location >= 0, location < attributedString.length else { return nil }
- let attributes = attributedString.attributes(at: location, effectiveRange: nil)
- if let encodedRange = attributes[.rdPageBlockRange] as? String {
- return NSRangeFromString(encodedRange)
- }
- return nil
- }
-
- func blockKind(at location: Int) -> RDEPUBTextBlockKind? {
- guard location >= 0, location < attributedString.length else { return nil }
- let attributes = attributedString.attributes(at: location, effectiveRange: nil)
- guard let rawValue = attributes[.rdPageBlockKind] as? String else { return nil }
- return RDEPUBTextBlockKind(rawValue: rawValue)
- }
-
- func attachmentPlacement(at location: Int) -> RDEPUBTextAttachmentPlacement? {
- guard location >= 0, location < attributedString.length else { return nil }
- let attributes = attributedString.attributes(at: location, effectiveRange: nil)
- guard let rawValue = attributes[.rdPageAttachmentPlacement] as? String else { return nil }
- return RDEPUBTextAttachmentPlacement(rawValue: rawValue)
- }
-
- func paragraphRange(containing location: Int) -> NSRange {
- let source = attributedString.string as NSString
- guard source.length > 0 else { return NSRange(location: 0, length: 0) }
- let safeLocation = min(max(location, 0), max(source.length - 1, 0))
- return source.paragraphRange(for: NSRange(location: safeLocation, length: 0))
- }
-
- func attachmentRanges(in range: NSRange) -> [NSRange] {
- guard let safeRange = clampedRange(range), safeRange.length > 0 else {
- return []
- }
- var results: [NSRange] = []
- attributedString.enumerateAttribute(.rdPageAttachmentKind, in: safeRange) { value, attributeRange, _ in
- guard value != nil else { return }
- results.append(attributeRange)
- }
- return results
- }
-
- func semanticHints(at location: Int) -> [RDEPUBTextSemanticHint] {
- guard location >= 0, location < attributedString.length else { return [] }
- let attributes = attributedString.attributes(at: location, effectiveRange: nil)
- guard let rawValue = attributes[.rdPageSemanticHints] as? String else { return [] }
- return rawValue
- .split(separator: ",")
- .compactMap { RDEPUBTextSemanticHint(rawValue: String($0)) }
- }
-
- private func trimmedRangeAvoidingWidow(
- proposed: NSRange,
- lineRanges: [NSRange]
- ) -> NSRange? {
- guard lineRanges.count >= 2,
- let lastLine = lineRanges.last else {
- return nil
- }
-
- let paragraphRange = paragraphRange(containing: lastLine.location)
- let trailingLines = trailingLineCount(in: lineRanges, paragraphRange: paragraphRange)
- let paragraphContinuesOnNextPage = NSMaxRange(proposed) < NSMaxRange(paragraphRange)
-
- guard trailingLines == 1, paragraphContinuesOnNextPage else {
- return nil
- }
-
- let keptLine = lineRanges[lineRanges.count - 2]
- let adjustedLength = NSMaxRange(keptLine) - proposed.location
- guard adjustedLength > 0 else { return nil }
-
- if ProcessInfo.processInfo.arguments.contains("--demo-pagination-debug") {
- let removedText = (attributedString.string as NSString).substring(with: NSRange(location: NSMaxRange(keptLine), length: min(proposed.length - adjustedLength, 40)))
- print("[PAGINATION-DEBUG] widow control removed 1 line: \"\(removedText)\" paragraphRange=\(NSStringFromRange(paragraphRange))")
- }
-
- return NSRange(location: proposed.location, length: adjustedLength)
- }
-
- private func trimmedRangeAvoidingOrphan(
- proposed: NSRange,
- lineRanges: [NSRange]
- ) -> NSRange? {
- guard lineRanges.count >= 2,
- let lastLine = lineRanges.last else {
- return nil
- }
-
- let paragraphRange = paragraphRange(containing: lastLine.location)
- let pageEnd = NSMaxRange(proposed)
- let paragraphEnd = NSMaxRange(paragraphRange)
- guard pageEnd < paragraphEnd else { return nil }
-
- let remainingLineCount = estimatedRemainingLineCount(
- in: paragraphRange,
- startingAt: pageEnd
- )
- let trailingLines = trailingLineCount(in: lineRanges, paragraphRange: paragraphRange)
- guard remainingLineCount == 1,
- trailingLines >= 2 else {
- return nil
- }
-
- let keptLine = lineRanges[lineRanges.count - 2]
- let adjustedLength = NSMaxRange(keptLine) - proposed.location
- guard adjustedLength > 0 else { return nil }
- return NSRange(location: proposed.location, length: adjustedLength)
- }
-
- private func trailingLineCount(
- in lineRanges: [NSRange],
- paragraphRange: NSRange
- ) -> Int {
- var count = 0
- for lineRange in lineRanges.reversed() {
- if NSIntersectionRange(lineRange, paragraphRange).length > 0 {
- count += 1
- } else {
- break
- }
- }
- return count
- }
-
- private func estimatedRemainingLineCount(
- in paragraphRange: NSRange,
- startingAt location: Int
- ) -> Int {
- let paragraphEnd = NSMaxRange(paragraphRange)
- var currentLocation = max(location, paragraphRange.location)
- guard currentLocation < paragraphEnd else { return 0 }
-
- let width = max(config.columnRects(fallback: pageSize).first?.width ?? config.contentRect(fallback: pageSize).width, 1)
- let typesetter = CTTypesetterCreateWithAttributedString(attributedString)
- var lineCount = 0
-
- while currentLocation < paragraphEnd {
- let suggestedCount = CTTypesetterSuggestLineBreak(typesetter, currentLocation, Double(width))
- let lineLength = max(suggestedCount, 1)
- currentLocation += lineLength
- lineCount += 1
- if lineCount > 2 {
- break
- }
- }
-
- return lineCount
- }
-
- func attachmentKinds(in range: NSRange) -> [RDEPUBTextAttachmentKind] {
- guard let safeRange = clampedRange(range), safeRange.length > 0 else {
- return []
- }
- var kinds: [RDEPUBTextAttachmentKind] = []
- attributedString.enumerateAttribute(.rdPageAttachmentKind, in: safeRange) { value, _, _ in
- guard let rawValue = value as? String,
- let kind = RDEPUBTextAttachmentKind(rawValue: rawValue),
- !kinds.contains(kind) else {
- return
- }
- kinds.append(kind)
- }
- return kinds
- }
-
- func blockKinds(in range: NSRange) -> [RDEPUBTextBlockKind] {
- guard let safeRange = clampedRange(range), safeRange.length > 0 else {
- return []
- }
- var kinds: [RDEPUBTextBlockKind] = []
- attributedString.enumerateAttribute(.rdPageBlockKind, in: safeRange) { value, _, _ in
- guard let rawValue = value as? String,
- let kind = RDEPUBTextBlockKind(rawValue: rawValue),
- !kinds.contains(kind) else {
- return
- }
- kinds.append(kind)
- }
- return kinds
- }
-
- func semanticHints(in range: NSRange) -> [RDEPUBTextSemanticHint] {
- guard let safeRange = clampedRange(range), safeRange.length > 0 else {
- return []
- }
- var hints: [RDEPUBTextSemanticHint] = []
- attributedString.enumerateAttribute(.rdPageSemanticHints, in: safeRange) { value, _, _ in
- guard let rawValue = value as? String else { return }
- for hint in rawValue.split(separator: ",").compactMap({ RDEPUBTextSemanticHint(rawValue: String($0)) }) where !hints.contains(hint) {
- hints.append(hint)
- }
- }
- return hints
- }
-
- func attachmentPlacements(in range: NSRange) -> [RDEPUBTextAttachmentPlacement] {
- guard let safeRange = clampedRange(range), safeRange.length > 0 else {
- return []
- }
- var placements: [RDEPUBTextAttachmentPlacement] = []
- attributedString.enumerateAttribute(.rdPageAttachmentPlacement, in: safeRange) { value, _, _ in
- guard let rawValue = value as? String,
- let placement = RDEPUBTextAttachmentPlacement(rawValue: rawValue),
- !placements.contains(placement) else {
- return
- }
- placements.append(placement)
- }
- return placements
- }
-
- func clampedRange(_ range: NSRange) -> NSRange? {
- guard range.location >= 0, range.length >= 0 else { return nil }
- guard attributedString.length > 0 else {
- return range.location == 0 ? NSRange(location: 0, length: 0) : nil
- }
- guard range.location < attributedString.length else { return nil }
-
- let maxLength = attributedString.length - range.location
- return NSRange(location: range.location, length: min(range.length, maxLength))
- }
-
- func nearestTrailingFragmentID(
- endingAt location: Int,
- fragmentOffsets: [String: Int]
- ) -> String? {
- fragmentOffsets
- .filter { $0.value <= location }
- .max { lhs, rhs in lhs.value < rhs.value }?
- .key
- }
-
- func diagnostics(
- reason: RDEPUBTextPageBreakReason,
- range: NSRange,
- attachmentRanges: [NSRange],
- blockRange: NSRange?,
- blockKinds: [RDEPUBTextBlockKind],
- semanticHints: [RDEPUBTextSemanticHint],
- attachmentPlacements: [RDEPUBTextAttachmentPlacement],
- trigger: String? = nil
- ) -> [String] {
- var items = ["page break: \(reason.rawValue)", "page range: \(NSStringFromRange(range))"]
- if let blockRange {
- items.append("block range: \(NSStringFromRange(blockRange))")
- }
- if !attachmentRanges.isEmpty {
- items.append("attachment ranges: \(attachmentRanges.map(NSStringFromRange).joined(separator: ","))")
- }
- if !blockKinds.isEmpty {
- items.append("block kinds: \(blockKinds.map(\.rawValue).joined(separator: ","))")
- }
- if !semanticHints.isEmpty {
- items.append("semantic hints: \(semanticHints.map(\.rawValue).joined(separator: ","))")
- }
- if !attachmentPlacements.isEmpty {
- items.append("attachment placements: \(attachmentPlacements.map(\.rawValue).joined(separator: ","))")
- }
- if let trigger, !trigger.isEmpty {
- items.append("semantic trigger: \(trigger)")
- }
- return items
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBPageBreakPolicy.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBPageBreakPolicy.swift
deleted file mode 100644
index bb3cf38..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBPageBreakPolicy.swift
+++ /dev/null
@@ -1,217 +0,0 @@
-import Foundation
-import UIKit
-
-struct RDEPUBPageBreakPolicy {
-
- private let attributedString: NSAttributedString
-
- init(attributedString: NSAttributedString) {
- self.attributedString = attributedString
- }
-
- func lineIsInAvoidPageBreakInsideBlock(_ lineRange: NSRange) -> Bool {
- guard let probeRange = clampedProbeRange(for: lineRange) else {
- return false
- }
- var found = false
- attributedString.enumerateAttributes(in: probeRange) { attributes, _, stop in
- guard shouldTreatAvoidHintAsBlockProtection(attributes) else {
- return
- }
- guard let rawValue = attributes[.rdPageSemanticHints] as? String else { return }
- let hints = rawValue
- .split(separator: ",")
- .compactMap { RDEPUBTextSemanticHint(rawValue: String($0)) }
- if hints.contains(.avoidPageBreakInside) {
- found = true
- stop.pointee = true
- }
- }
- return found
- }
-
- func lineIsInKeepWithNextBlock(_ lineRange: NSRange) -> Bool {
- guard let probeRange = clampedProbeRange(for: lineRange) else {
- return false
- }
- var found = false
- attributedString.enumerateAttribute(.rdPageSemanticHints, in: probeRange) { value, _, stop in
- guard let rawValue = value as? String else { return }
- let hints = rawValue
- .split(separator: ",")
- .compactMap { RDEPUBTextSemanticHint(rawValue: String($0)) }
- if hints.contains(.keepWithNext) {
- found = true
- stop.pointee = true
- }
- }
- return found
- }
-
- func adjustedRange(
- from proposedRange: NSRange,
- totalLength: Int,
- lineRanges: [NSRange],
- factory: RDEPUBCoreTextPageFrameFactory
- ) -> (
- range: NSRange,
- breakReason: RDEPUBTextPageBreakReason,
- blockRange: NSRange?,
- attachmentRanges: [NSRange],
- attachmentKinds: [RDEPUBTextAttachmentKind],
- blockKinds: [RDEPUBTextBlockKind],
- semanticHints: [RDEPUBTextSemanticHint],
- attachmentPlacements: [RDEPUBTextAttachmentPlacement],
- diagnostics: [String]
- ) {
- let pageEnd = proposedRange.location + proposedRange.length
- let proposedBlockKinds = factory.blockKinds(in: proposedRange)
- let proposedSemanticHints = factory.semanticHints(in: proposedRange)
- let proposedAttachmentPlacements = factory.attachmentPlacements(in: proposedRange)
- guard pageEnd < totalLength else {
- return (
- range: proposedRange,
- breakReason: .chapterEnd,
- blockRange: factory.blockRange(at: max(proposedRange.location, pageEnd - 1)),
- attachmentRanges: factory.attachmentRanges(in: proposedRange),
- attachmentKinds: factory.attachmentKinds(in: proposedRange),
- blockKinds: proposedBlockKinds,
- semanticHints: proposedSemanticHints,
- attachmentPlacements: proposedAttachmentPlacements,
- diagnostics: factory.diagnostics(
- reason: .chapterEnd,
- range: proposedRange,
- attachmentRanges: factory.attachmentRanges(in: proposedRange),
- blockRange: factory.blockRange(at: max(proposedRange.location, pageEnd - 1)),
- blockKinds: proposedBlockKinds,
- semanticHints: proposedSemanticHints,
- attachmentPlacements: proposedAttachmentPlacements
- )
- )
- }
-
- let currentBlockRange = factory.blockRange(at: max(proposedRange.location, pageEnd - 1))
- let currentAttachmentRanges = factory.attachmentRanges(in: proposedRange)
- let currentAttachmentKinds = factory.attachmentKinds(in: proposedRange)
- let currentBlockKinds = proposedBlockKinds
- let currentSemanticHints = proposedSemanticHints
- let currentAttachmentPlacements = proposedAttachmentPlacements
-
- if let pageRelateBoundary = preferredPageRelateBoundary(
- after: proposedRange,
- minimumEnd: proposedRange.location + 1,
- lineRanges: lineRanges,
- factory: factory
- ) {
- let adjustedRange = NSRange(location: proposedRange.location, length: pageRelateBoundary - proposedRange.location)
- return (
- range: adjustedRange,
- breakReason: .semanticBoundary,
- blockRange: currentBlockRange,
- attachmentRanges: currentAttachmentRanges,
- attachmentKinds: currentAttachmentKinds,
- blockKinds: currentBlockKinds,
- semanticHints: currentSemanticHints,
- attachmentPlacements: currentAttachmentPlacements,
- diagnostics: factory.diagnostics(
- reason: .semanticBoundary,
- range: adjustedRange,
- attachmentRanges: currentAttachmentRanges,
- blockRange: currentBlockRange,
- blockKinds: currentBlockKinds,
- semanticHints: currentSemanticHints,
- attachmentPlacements: currentAttachmentPlacements,
- trigger: RDEPUBTextSemanticHint.pageRelate.rawValue
- )
- )
- }
-
- return (
- range: proposedRange,
- breakReason: .frameLimit,
- blockRange: currentBlockRange,
- attachmentRanges: currentAttachmentRanges,
- attachmentKinds: currentAttachmentKinds,
- blockKinds: currentBlockKinds,
- semanticHints: currentSemanticHints,
- attachmentPlacements: currentAttachmentPlacements,
- diagnostics: factory.diagnostics(
- reason: .frameLimit,
- range: proposedRange,
- attachmentRanges: currentAttachmentRanges,
- blockRange: currentBlockRange,
- blockKinds: currentBlockKinds,
- semanticHints: currentSemanticHints,
- attachmentPlacements: currentAttachmentPlacements
- )
- )
- }
-
- func preferredPageRelateBoundary(
- after range: NSRange,
- minimumEnd: Int,
- lineRanges: [NSRange],
- factory: RDEPUBCoreTextPageFrameFactory
- ) -> Int? {
- let pageStartOfNext = range.location + range.length
- guard pageStartOfNext > range.location,
- pageStartOfNext < attributedString.length,
- lineRanges.count >= 2,
- factory.semanticHints(at: pageStartOfNext).contains(.pageRelate) else {
- return nil
- }
-
- let boundaryBlockStart = factory.blockRange(at: pageStartOfNext)?.location
- ?? factory.paragraphRange(containing: pageStartOfNext).location
- guard boundaryBlockStart == pageStartOfNext else { return nil }
-
- let lastLineStart = lineRanges[lineRanges.count - 1].location
- guard lastLineStart > range.location, lastLineStart >= minimumEnd else {
- return nil
- }
- return lastLineStart
- }
-
- private func shouldTreatAvoidHintAsBlockProtection(_ attributes: [NSAttributedString.Key: Any]) -> Bool {
- guard let rawValue = attributes[.rdPageSemanticHints] as? String else {
- return false
- }
- let hints = rawValue
- .split(separator: ",")
- .compactMap { RDEPUBTextSemanticHint(rawValue: String($0)) }
- guard hints.contains(.avoidPageBreakInside) else {
- return false
- }
-
- let placement = (attributes[.rdPageAttachmentPlacement] as? String)
- .flatMap(RDEPUBTextAttachmentPlacement.init(rawValue:))
- let blockKind = (attributes[.rdPageBlockKind] as? String)
- .flatMap(RDEPUBTextBlockKind.init(rawValue:))
-
- // Inline attachments (footnote icons, rare-character images) flow with
- // the surrounding text, so their avoid hint must not lock the line to
- // the next page. Placement is checked besides blockKind because an
- // enclosing paragraph's semantics overwrite blockKind on the
- // attachment's range, while placement survives.
- if blockKind == .attachment || placement != nil, placement != .centered {
- return false
- }
-
- return true
- }
-
- private func clampedProbeRange(for lineRange: NSRange) -> NSRange? {
- clampedRange(NSRange(location: lineRange.location, length: max(lineRange.length, 1)))
- }
-
- private func clampedRange(_ range: NSRange) -> NSRange? {
- guard range.location >= 0, range.length >= 0 else { return nil }
- guard attributedString.length > 0 else {
- return range.location == 0 ? NSRange(location: 0, length: 0) : nil
- }
- guard range.location < attributedString.length else { return nil }
-
- let maxLength = attributedString.length - range.location
- return NSRange(location: range.location, length: min(range.length, maxLength))
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextLayoutFrame.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextLayoutFrame.swift
deleted file mode 100644
index ef5c0d7..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextLayoutFrame.swift
+++ /dev/null
@@ -1,38 +0,0 @@
-import Foundation
-
-struct RDEPUBTextLayoutFrame: Equatable {
-
- var contentRange: NSRange
-
- var breakReason: RDEPUBTextPageBreakReason
-
- var blockRange: NSRange?
-
- var attachmentRanges: [NSRange]
-
- var attachmentKinds: [RDEPUBTextAttachmentKind]
-
- var blockKinds: [RDEPUBTextBlockKind]
-
- var semanticHints: [RDEPUBTextSemanticHint]
-
- var attachmentPlacements: [RDEPUBTextAttachmentPlacement]
-
- var trailingFragmentID: String?
-
- var diagnostics: [String]
-
- var metadata: RDEPUBTextPageMetadata {
- RDEPUBTextPageMetadata(
- breakReason: breakReason,
- blockRange: blockRange,
- attachmentRanges: attachmentRanges,
- attachmentKinds: attachmentKinds,
- blockKinds: blockKinds,
- semanticHints: semanticHints,
- attachmentPlacements: attachmentPlacements,
- trailingFragmentID: trailingFragmentID,
- diagnostics: diagnostics
- )
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextLayouter.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextLayouter.swift
deleted file mode 100644
index d87f9ed..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextLayouter.swift
+++ /dev/null
@@ -1,19 +0,0 @@
-import CoreText
-import UIKit
-
-#if canImport(DTCoreText)
-import DTCoreText
-#endif
-
-struct RDEPUBTextLayouter {
- private let counter: RDEPUBChapterPageCounter
-
- init(attributedString: NSAttributedString, pageSize: CGSize, config: RDEPUBTextLayoutConfig = .default) {
- let factory = RDEPUBCoreTextPageFrameFactory(attributedString: attributedString, pageSize: pageSize, config: config)
- self.counter = RDEPUBChapterPageCounter(factory: factory)
- }
-
- func layoutFrames(fragmentOffsets: [String: Int] = [:]) -> [RDEPUBTextLayoutFrame] {
- counter.layoutFrames(fragmentOffsets: fragmentOffsets)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationInterfaces.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationInterfaces.swift
deleted file mode 100644
index 257acbe..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationInterfaces.swift
+++ /dev/null
@@ -1,32 +0,0 @@
-
-import Foundation
-import UIKit
-
-struct RDEPUBPageBreakDecision {
-
- var range: NSRange
-
- var reason: RDEPUBTextPageBreakReason
-
- var diagnostics: [String]
-}
-
-protocol RDEPUBChapterPageCounting {
-
- func pageRanges(
- for attributedString: NSAttributedString,
- pageSize: CGSize,
- config: RDEPUBTextLayoutConfig,
- fragmentOffsets: [String: Int]
- ) -> [RDEPUBPageBreakDecision]
-}
-
-protocol RDEPUBPageFrameBuilding {
-
- func makeFrames(
- attributedString: NSAttributedString,
- pageSize: CGSize,
- config: RDEPUBTextLayoutConfig,
- fragmentOffsets: [String: Int]
- ) -> [RDEPUBTextLayoutFrame]
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationSupport.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationSupport.swift
deleted file mode 100644
index a7ab73c..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Pagination/RDEPUBTextPaginationSupport.swift
+++ /dev/null
@@ -1,19 +0,0 @@
-import CoreText
-import UIKit
-
-extension NSAttributedString {
-
- func rd_paginatedFrames(
- size: CGSize,
- fragmentOffsets: [String: Int] = [:],
- config: RDEPUBTextLayoutConfig = .default
- ) -> [RDEPUBTextLayoutFrame] {
- let factory = RDEPUBCoreTextPageFrameFactory(attributedString: self, pageSize: size, config: config)
- let counter = RDEPUBChapterPageCounter(factory: factory)
- return counter.layoutFrames(fragmentOffsets: fragmentOffsets)
- }
-
- func ss_pageRanges(size: CGSize) -> [NSRange] {
- rd_paginatedFrames(size: size).map(\.contentRange)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBChapterData.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBChapterData.swift
deleted file mode 100644
index cdd4d58..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBChapterData.swift
+++ /dev/null
@@ -1,380 +0,0 @@
-import UIKit
-
-public final class RDEPUBChapterData {
-
- public let chapter: RDEPUBTextChapter
-
- public let indexTable: RDEPUBTextIndexTable
-
- public init(chapter: RDEPUBTextChapter, indexTable: RDEPUBTextIndexTable) {
- self.chapter = chapter
- self.indexTable = indexTable
- }
-
- public var chapterIndex: Int { chapter.chapterIndex }
-
- public var spineIndex: Int { chapter.spineIndex }
-
- public var href: String { chapter.href }
-
- public var title: String { chapter.title }
-
- public var attributedContent: NSAttributedString { chapter.attributedContent }
-
- public var pages: [RDEPUBTextPage] { chapter.pages }
-
- public var pageCount: Int { chapter.pages.count }
-
- public var fragmentOffsets: [String: Int] { chapter.fragmentOffsets }
-
- public var chapterInfo: EPUBChapterInfo {
- EPUBChapterInfo(spineIndex: spineIndex, title: title, pageCount: pageCount)
- }
-
- public var absolutePageRange: ClosedRange? {
- guard let firstPage = pages.first, let lastPage = pages.last else { return nil }
- return firstPage.absolutePageIndex...lastPage.absolutePageIndex
- }
-
- public func page(containing absoluteOffset: Int) -> RDEPUBTextPage? {
- chapter.pages.first { NSLocationInRange(absoluteOffset, $0.contentRange) }
- }
-
- public func pageNumber(containing absoluteOffset: Int) -> Int? {
- page(containing: absoluteOffset)?.absolutePageIndex
- }
-
- public func page(atAbsolutePageIndex absolutePageIndex: Int) -> RDEPUBTextPage? {
- chapter.pages.first { $0.absolutePageIndex == absolutePageIndex }
- }
-
- public func page(atPageNumber pageNumber: Int) -> RDEPUBTextPage? {
- guard pageNumber > 0, pages.indices.contains(pageNumber - 1) else { return nil }
- return pages[pageNumber - 1]
- }
-
- public func anchor(forAbsoluteIndex index: Int) -> RDEPUBTextAnchor {
- indexTable.anchor(forAbsoluteIndex: index, in: chapter)
- }
-
- public func anchor(forGlobalIndex index: Int) -> RDEPUBTextAnchor? {
- indexTable.anchor(forGlobalIndex: index)
- }
-
- public func rangeAnchor(for absoluteRange: NSRange) -> RDEPUBTextRangeAnchor {
- let start = anchor(forAbsoluteIndex: absoluteRange.location)
- let end = anchor(forAbsoluteIndex: absoluteRange.location + absoluteRange.length)
- return RDEPUBTextRangeAnchor(start: start, end: end)
- }
-
- public func globalRange(for rangeAnchor: RDEPUBTextRangeAnchor) -> NSRange {
- indexTable.globalRange(for: rangeAnchor)
- }
-
- public func selection(from absoluteRange: NSRange, bookIdentifier: String?) -> RDEPUBSelection? {
- guard page(containing: absoluteRange.location) != nil else { return nil }
- let location = self.location(for: absoluteRange, bookIdentifier: bookIdentifier)
- let text = chapter.attributedContent.attributedSubstring(from: absoluteRange).string
- let rangeInfo = RDEPUBTextOffsetRangeInfo(
- href: chapter.href,
- start: absoluteRange.location,
- end: absoluteRange.location + absoluteRange.length
- ).jsonString()
- return RDEPUBSelection(
- bookIdentifier: bookIdentifier,
- location: location,
- text: text,
- rangeInfo: rangeInfo
- )
- }
-
- public func location(for absoluteRange: NSRange, bookIdentifier: String?) -> RDEPUBLocation {
- indexTable.location(
- for: rangeAnchor(for: absoluteRange),
- in: chapter,
- bookIdentifier: bookIdentifier
- )
- }
-
- public func location(forPage page: RDEPUBTextPage, bookIdentifier: String?) -> RDEPUBLocation {
- location(for: page.contentRange, bookIdentifier: bookIdentifier)
- }
-
- public func page(for location: RDEPUBLocation) -> RDEPUBTextPage? {
- guard let range = absoluteRange(for: location) else { return nil }
- return page(containing: range.location)
- }
-
- public func page(for searchMatch: RDEPUBSearchMatch) -> RDEPUBTextPage? {
- guard let range = absoluteRange(for: searchMatch) else { return nil }
- return page(containing: range.location)
- }
-
- public func absoluteRange(for location: RDEPUBLocation) -> NSRange? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(location.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return indexTable.chapterRange(for: rangeAnchor)
- }
-
- if let cfi = RDEPUBCFICompatibility.parseLossy(location.cfi),
- let anchor = indexTable.anchor(for: cfi) {
- return NSRange(location: indexTable.chapterOffset(for: anchor), length: 1)
- }
-
- if let rangeAnchor = location.rangeAnchor {
- return indexTable.chapterRange(for: rangeAnchor)
- }
-
- if let fragment = location.fragment,
- let offset = fragmentOffsets[fragment] {
- return NSRange(location: offset, length: 1)
- }
-
- let lastOffset = max(attributedContent.length - 1, 0)
- let offset = min(lastOffset, max(0, Int(round(Double(lastOffset) * location.navigationProgression))))
- return NSRange(location: offset, length: 1)
- }
-
- public func absoluteRange(for highlight: RDEPUBHighlight) -> NSRange? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(highlight.location.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return indexTable.chapterRange(for: rangeAnchor)
- }
-
- if let endpointRange = chapterRange(fromLocationCFIEndpoints: highlight.location) {
- return endpointRange
- }
-
- if let rangeAnchor = highlight.location.rangeAnchor {
- return indexTable.chapterRange(for: rangeAnchor)
- }
- return RDEPUBTextOffsetRangeInfo.decode(from: highlight.rangeInfo)?.nsRange
- }
-
- public func absoluteRange(for searchMatch: RDEPUBSearchMatch) -> NSRange? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(searchMatch.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return indexTable.chapterRange(for: rangeAnchor)
- }
- if let cfi = RDEPUBCFICompatibility.parseLossy(searchMatch.cfi),
- let anchor = indexTable.anchor(for: cfi) {
- let location = indexTable.chapterOffset(for: anchor)
- return NSRange(
- location: location,
- length: recoveredSearchRangeLength(for: searchMatch, cfi: cfi, startOffset: location)
- )
- }
- if let location = searchMatch.rangeLocation {
- return NSRange(location: location, length: max(searchMatch.rangeLength, 1))
- }
- if let rangeAnchor = searchMatch.rangeAnchor {
- return indexTable.chapterRange(for: rangeAnchor)
- }
- return nil
- }
-
- public func globalRange(for location: RDEPUBLocation) -> NSRange? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(location.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return indexTable.globalRange(for: rangeAnchor)
- }
-
- if let cfi = RDEPUBCFICompatibility.parseLossy(location.cfi),
- let anchor = indexTable.anchor(for: cfi) {
- return NSRange(location: indexTable.globalIndex(for: anchor), length: 1)
- }
-
- if let rangeAnchor = location.rangeAnchor {
- return indexTable.globalRange(for: rangeAnchor)
- }
- guard let chapterRange = absoluteRange(for: location),
- let chapterStart = indexTable.chapterStartOffset(forFileIndex: spineIndex) else {
- return nil
- }
- return NSRange(location: chapterStart + chapterRange.location, length: chapterRange.length)
- }
-
- public func globalRange(for highlight: RDEPUBHighlight) -> NSRange? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(highlight.location.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return indexTable.globalRange(for: rangeAnchor)
- }
-
- if let endpointRange = globalRange(fromLocationCFIEndpoints: highlight.location) {
- return endpointRange
- }
-
- if let rangeAnchor = highlight.location.rangeAnchor {
- return indexTable.globalRange(for: rangeAnchor)
- }
- guard let chapterRange = absoluteRange(for: highlight),
- let chapterStart = indexTable.chapterStartOffset(forFileIndex: spineIndex) else {
- return nil
- }
- return NSRange(location: chapterStart + chapterRange.location, length: chapterRange.length)
- }
-
- public func globalRange(for searchMatch: RDEPUBSearchMatch) -> NSRange? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(searchMatch.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return indexTable.globalRange(for: rangeAnchor)
- }
- if let cfi = RDEPUBCFICompatibility.parseLossy(searchMatch.cfi),
- let anchor = indexTable.anchor(for: cfi) {
- let chapterLocation = indexTable.chapterOffset(for: anchor)
- return NSRange(
- location: indexTable.globalIndex(for: anchor),
- length: recoveredSearchRangeLength(for: searchMatch, cfi: cfi, startOffset: chapterLocation)
- )
- }
- if let rangeAnchor = searchMatch.rangeAnchor {
- return indexTable.globalRange(for: rangeAnchor)
- }
- guard let chapterRange = absoluteRange(for: searchMatch),
- let chapterStart = indexTable.chapterStartOffset(forFileIndex: spineIndex) else {
- return nil
- }
- return NSRange(location: chapterStart + chapterRange.location, length: chapterRange.length)
- }
-
- public func highlights(on page: RDEPUBTextPage, from allHighlights: [RDEPUBHighlight]) -> [RDEPUBHighlight] {
- let pageRange = absoluteOffsetRange(for: page)
- return allHighlights.filter { highlight in
- guard highlight.location.href == chapter.href else { return false }
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(highlight.location.rangeCFI),
- let rangeAnchor = indexTable.rangeAnchor(for: cfiRange) {
- return NSIntersectionRange(indexTable.chapterRange(for: rangeAnchor), page.contentRange).length > 0
- }
- if let anchor = highlight.location.rangeAnchor?.start {
- return pageRange.contains(absoluteOffset(for: anchor))
- }
- guard let range = RDEPUBTextOffsetRangeInfo.decode(from: highlight.rangeInfo)?.nsRange else {
- return false
- }
- return NSIntersectionRange(range, page.contentRange).length > 0
- }
- }
-
- public func searchMatches(on page: RDEPUBTextPage, from matches: [RDEPUBSearchMatch]) -> [RDEPUBSearchMatch] {
- return matches.filter { match in
- guard match.href == chapter.href else { return false }
- if let range = absoluteRange(for: match) {
- return NSIntersectionRange(range, page.contentRange).length > 0
- }
- return false
- }
- }
-
- public func searchResults(on page: RDEPUBTextPage, from matches: [RDEPUBSearchMatch]) -> [RDEPUBSearchMatch] {
- searchMatches(on: page, from: matches)
- }
-
- public func pageNumber(for location: RDEPUBLocation) -> Int? {
- guard let page = page(for: location) else { return nil }
- return page.absolutePageIndex + 1
- }
-
- public func pageNumber(for searchMatch: RDEPUBSearchMatch) -> Int? {
- guard let page = page(for: searchMatch) else { return nil }
- return page.absolutePageIndex + 1
- }
-
- public func contains(
- tableOfContentsItem item: EPUBTableOfContentsItem,
- normalizer: (String) -> String?
- ) -> Bool {
- guard let chapterHref = normalizer(href),
- let itemHref = normalizer(item.href.components(separatedBy: "#").first ?? item.href) else {
- return false
- }
- return chapterHref == itemHref
- }
-
- public func tableOfContentsItems(
- from items: [EPUBTableOfContentsItem],
- normalizer: (String) -> String?
- ) -> [EPUBTableOfContentsItem] {
- items.flatMap { item -> [EPUBTableOfContentsItem] in
- let descendants = tableOfContentsItems(from: item.children, normalizer: normalizer)
- return contains(tableOfContentsItem: item, normalizer: normalizer) ? [item] + descendants : descendants
- }
- }
-
- public func primaryTableOfContentsItem(
- from items: [EPUBTableOfContentsItem],
- normalizer: (String) -> String?
- ) -> EPUBTableOfContentsItem? {
- tableOfContentsItems(from: items, normalizer: normalizer).first
- }
-
- public func applyHighlights(
- to content: NSMutableAttributedString,
- page: RDEPUBTextPage,
- highlights: [RDEPUBHighlight]
- ) {
- for highlight in highlights {
- guard highlight.location.href == chapter.href else { continue }
- guard let range = absoluteRange(for: highlight) else { continue }
- let overlap = NSIntersectionRange(range, page.contentRange)
- guard overlap.length > 0 else { continue }
- let relativeRange = NSRange(location: overlap.location - page.pageStartOffset, length: overlap.length)
- guard relativeRange.location >= 0,
- relativeRange.location + relativeRange.length <= content.length else { continue }
-
- switch highlight.style {
- case .highlight:
- content.addAttribute(kRDEPUBHighlightAttributeName, value: highlight.uiColor, range: relativeRange)
- case .underline:
- content.addAttribute(kRDEPUBUnderlineAttributeName, value: highlight.uiColor, range: relativeRange)
- }
- }
- }
-
- private func absoluteOffsetRange(for page: RDEPUBTextPage) -> Range {
- let lowerBound = page.pageStartOffset
- let upperBound = page.pageEndOffset + 1
- return lowerBound.. Int {
- indexTable.chapterOffset(for: anchor)
- }
-
- private func chapterRange(fromLocationCFIEndpoints location: RDEPUBLocation) -> NSRange? {
- guard let startCFI = RDEPUBCFICompatibility.parseLossy(location.cfi),
- let endCFI = RDEPUBCFICompatibility.parseLossy(location.lastCFI ?? location.cfi),
- let startAnchor = indexTable.anchor(for: startCFI),
- let endAnchor = indexTable.anchor(for: endCFI),
- startAnchor.fileIndex == endAnchor.fileIndex else {
- return nil
- }
- let start = indexTable.chapterOffset(for: startAnchor)
- let end = indexTable.chapterOffset(for: endAnchor)
- return NSRange(location: min(start, end), length: max(abs(end - start), 1))
- }
-
- private func globalRange(fromLocationCFIEndpoints location: RDEPUBLocation) -> NSRange? {
- guard let startCFI = RDEPUBCFICompatibility.parseLossy(location.cfi),
- let endCFI = RDEPUBCFICompatibility.parseLossy(location.lastCFI ?? location.cfi),
- let startAnchor = indexTable.anchor(for: startCFI),
- let endAnchor = indexTable.anchor(for: endCFI),
- startAnchor.fileIndex == endAnchor.fileIndex else {
- return nil
- }
- let start = indexTable.globalIndex(for: startAnchor)
- let end = indexTable.globalIndex(for: endAnchor)
- return NSRange(location: min(start, end), length: max(abs(end - start), 1))
- }
-
- private func recoveredSearchRangeLength(
- for searchMatch: RDEPUBSearchMatch,
- cfi: RDEPUBCFI,
- startOffset: Int
- ) -> Int {
- let exactLength = cfi.textAssertion?.exact?.utf16.count ?? 0
- let fallbackLength = max(searchMatch.rangeLength, 1)
- let candidateLength = exactLength > 0 ? exactLength : fallbackLength
- let remainingLength = max(attributedContent.length - startOffset, 1)
- return min(max(candidateLength, 1), remainingLength)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBDTCoreTextRenderer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBDTCoreTextRenderer.swift
deleted file mode 100644
index 28c1e63..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBDTCoreTextRenderer.swift
+++ /dev/null
@@ -1,135 +0,0 @@
-import UIKit
-
-#if canImport(DTCoreText)
-import DTCoreText
-#endif
-
-public struct RDEPUBDTCoreTextRenderer: RDEPUBTextRenderer {
- public init() {}
-
- public static var isAvailable: Bool {
-#if canImport(DTCoreText)
- return true
-#else
- return false
-#endif
- }
-
- public func renderChapter(
- request: RDEPUBTextChapterRenderRequest
- ) throws -> RDEPUBRenderedChapterContent {
-#if canImport(DTCoreText)
- let chapterContext = request.context
- guard let data = chapterContext.html.data(using: .utf8) else {
- throw RDEPUBTextRenderingError.htmlEncodingFailed
- }
-
- guard let rendered = makeAttributedString(from: data, request: request) else {
- return fallbackRenderedContent(request: request)
- }
-
- let attributedString = NSMutableAttributedString(attributedString: rendered)
- RDEPUBSemanticMarkerInjector.applyPaginationSemantics(in: attributedString)
- let fragmentOffsets = RDEPUBFragmentMarkerInjector.extractFragmentOffsets(from: attributedString)
- RDEPUBTextRendererSupport.normalizeReadingAttributes(
- in: attributedString,
- style: request.style,
- layoutConfig: request.layoutConfig ?? .default
- )
- return RDEPUBRenderedChapterContent(
- attributedString: attributedString,
- fragmentOffsets: fragmentOffsets,
- resourceDiagnostics: chapterContext.resourceDiagnostics
- )
-#else
- return fallbackRenderedContent(request: request)
-#endif
- }
-
- public func renderChapter(
- html: String,
- baseURL: URL?,
- style: RDEPUBTextRenderStyle
- ) throws -> RDEPUBRenderedChapterContent {
- let request = RDEPUBTextTypesetterPipeline().makeRequest(
- from: RDEPUBTypesettingInput(
- href: "",
- spineIndex: nil,
- title: "",
- rawHTML: html,
- baseURL: baseURL,
- style: style,
- resourceResolver: nil
- )
- ).request
- return try renderChapter(request: request)
- }
-
- private func fallbackRenderedContent(request: RDEPUBTextChapterRenderRequest) -> RDEPUBRenderedChapterContent {
- let attributedString = RDEPUBTextRendererSupport.fallbackAttributedString(for: request.context.html, style: request.style)
- RDEPUBSemanticMarkerInjector.applyPaginationSemantics(in: attributedString)
- let fragmentOffsets = RDEPUBFragmentMarkerInjector.extractFragmentOffsets(from: attributedString)
- RDEPUBTextRendererSupport.normalizeReadingAttributes(
- in: attributedString,
- style: request.style,
- layoutConfig: request.layoutConfig ?? .default
- )
- return RDEPUBRenderedChapterContent(
- attributedString: attributedString,
- fragmentOffsets: fragmentOffsets,
- resourceDiagnostics: request.context.resourceDiagnostics
- )
- }
-
-#if canImport(DTCoreText)
-
- private func makeAttributedString(from data: Data, request: RDEPUBTextChapterRenderRequest) -> NSAttributedString? {
- let builder = DTHTMLAttributedStringBuilder(
- html: data,
- options: dtOptions(request: request),
- documentAttributes: nil
- )
- builder?.willFlushCallback = { element in
- guard let element else { return }
- RDEPUBAttachmentNormalizer.prepareHTMLElementForReaderRendering(
- element,
- style: request.style,
- maxImageSize: resolvedMaxImageSize(for: request)
- )
- }
- return builder?.generatedAttributedString()
- }
-
- private func dtOptions(request: RDEPUBTextChapterRenderRequest) -> [AnyHashable: Any] {
- let style = request.style
- let maxImageSize = resolvedMaxImageSize(for: request)
- var options: [AnyHashable: Any] = [
- NSTextSizeMultiplierDocumentOption: 1.0,
- DTDefaultFontFamily: style.font.familyName,
- DTDefaultFontName: style.font.fontName,
- DTDefaultFontSize: style.font.pointSize,
- DTDefaultLineHeightMultiplier: max((style.font.lineHeight + style.lineSpacing) / max(style.font.lineHeight, 1), 1),
- DTUseiOS6Attributes: true,
- DTMaxImageSize: NSValue(cgSize: maxImageSize)
- ]
-
- if let baseURL = request.context.baseURL {
- options[NSBaseURLDocumentOption] = baseURL
- }
- if let textColor = style.textColor {
- options[DTDefaultTextColor] = textColor
- }
-
- return options
- }
-
- private func resolvedMaxImageSize(for request: RDEPUBTextChapterRenderRequest) -> CGSize {
- let layoutConfig = request.layoutConfig ?? .default
- let fallbackPageSize = request.pageSize ?? layoutConfig.fallbackViewportSize
- let contentRect = layoutConfig.contentRect(fallback: fallbackPageSize)
- let maxWidth = max(round(contentRect.width), 1)
- let maxHeight = max(round(contentRect.height * layoutConfig.imageMaxHeightRatio), 1)
- return CGSize(width: maxWidth, height: maxHeight)
- }
-#endif
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextIndexTable.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextIndexTable.swift
deleted file mode 100644
index 5d01418..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextIndexTable.swift
+++ /dev/null
@@ -1,542 +0,0 @@
-
-import Foundation
-
-public struct RDEPUBRowColumnIndex: Codable, Equatable {
-
- public let row: Int
-
- public let startOffset: Int
-
- public let endOffset: Int
-
- public init(row: Int, startOffset: Int, endOffset: Int) {
- self.row = row
- self.startOffset = startOffset
- self.endOffset = endOffset
- }
-
- public func contains(_ offset: Int) -> Bool {
- offset >= startOffset && offset <= endOffset
- }
-}
-
-public struct RDEPUBTextIndexTable {
-
- public let chapterStartOffsets: [Int]
-
- public let chapterLengths: [Int]
-
- public let hrefToChapterIndex: [String: Int]
-
- public let hrefToFileIndex: [String: Int]
-
- public let fragmentOffsetsByHref: [String: [String: Int]]
-
- public let fileIndexToHref: [Int: String]
-
- public let fileRowColumnMap: [Int: [RDEPUBRowColumnIndex]]
-
- public let fileTextMap: [Int: String]
-
- public let fileCFIMap: [Int: RDEPUBCFIMap]
-
- public var totalCharacterCount: Int {
- guard let lastIndex = chapterStartOffsets.indices.last,
- chapterLengths.indices.contains(lastIndex) else {
- return 0
- }
- return chapterStartOffsets[lastIndex] + chapterLengths[lastIndex]
- }
-
- public init(chapters: [RDEPUBTextChapter]) {
- var offsets: [Int] = []
- var lengths: [Int] = []
- var hrefMap: [String: Int] = [:]
- var hrefToFileMap: [String: Int] = [:]
- var fragmentMap: [String: [String: Int]] = [:]
- var fileIndexMap: [Int: String] = [:]
- var rowColumnMap: [Int: [RDEPUBRowColumnIndex]] = [:]
- var textMap: [Int: String] = [:]
- var cfiMap: [Int: RDEPUBCFIMap] = [:]
- var running = 0
-
- for (index, chapter) in chapters.enumerated() {
- hrefMap[chapter.href] = index
- hrefToFileMap[chapter.href] = chapter.spineIndex
- offsets.append(running)
- lengths.append(chapter.attributedContent.length)
- running += chapter.attributedContent.length
- fragmentMap[chapter.href] = chapter.fragmentOffsets
- fileIndexMap[chapter.spineIndex] = chapter.href
- let chapterText = chapter.attributedContent.string
- rowColumnMap[chapter.spineIndex] = Self.makeRowColumnIndices(for: chapterText)
- textMap[chapter.spineIndex] = chapterText
- if let chapterCFIMap = chapter.cfiMap {
- cfiMap[chapter.spineIndex] = chapterCFIMap
- }
- }
-
- self.chapterStartOffsets = offsets
- self.chapterLengths = lengths
- self.hrefToChapterIndex = hrefMap
- self.hrefToFileIndex = hrefToFileMap
- self.fragmentOffsetsByHref = fragmentMap
- self.fileIndexToHref = fileIndexMap
- self.fileRowColumnMap = rowColumnMap
- self.fileTextMap = textMap
- self.fileCFIMap = cfiMap
- }
-
- public func anchor(forAbsoluteIndex index: Int, in chapter: RDEPUBTextChapter) -> RDEPUBTextAnchor {
- let normalizedIndex = clampedOffset(index, in: chapter)
- let fragmentID = nearestFragmentID(beforeOrAt: normalizedIndex, in: chapter)
- let row = row(forAbsoluteIndex: normalizedIndex, inFileIndex: chapter.spineIndex)
- let column = column(forAbsoluteIndex: normalizedIndex, inFileIndex: chapter.spineIndex)
- return RDEPUBTextAnchor(
- fileIndex: chapter.spineIndex,
- row: row,
- column: column,
- chapterOffset: normalizedIndex,
- fragmentID: fragmentID
- )
- }
-
- public func anchor(for location: RDEPUBLocation) -> RDEPUBTextAnchor? {
- if let cfiRange = RDEPUBCFICompatibility.parseRangeLossy(location.rangeCFI),
- let anchor = anchor(for: cfiRange.start) {
- return anchor
- }
-
- if let anchor = location.rangeAnchor?.start {
- return anchor
- }
-
- if let cfi = RDEPUBCFICompatibility.parseLossy(location.cfi),
- let anchor = anchor(for: cfi) {
- return anchor
- }
-
- guard let chapterIndex = hrefToChapterIndex[location.href],
- let fileIndex = hrefToFileIndex[location.href] else { return nil }
- let fragments = fragmentOffsetsByHref[location.href] ?? [:]
- let chapterOffset: Int
-
- if let fragment = location.fragment, let fragmentOffset = fragments[fragment] {
- chapterOffset = fragmentOffset
- } else {
- let estimatedLength = max(chapterLengths.indices.contains(chapterIndex) ? chapterLengths[chapterIndex] : 0, 1)
- let lastOffset = max(estimatedLength - 1, 0)
- chapterOffset = min(lastOffset, max(0, Int(round(Double(lastOffset) * location.navigationProgression))))
- }
-
- return RDEPUBTextAnchor(
- fileIndex: fileIndex,
- row: row(forAbsoluteIndex: chapterOffset, inFileIndex: fileIndex),
- column: column(forAbsoluteIndex: chapterOffset, inFileIndex: fileIndex),
- chapterOffset: chapterOffset,
- fragmentID: location.fragment
- )
- }
-
- public func anchor(for cfi: RDEPUBCFI) -> RDEPUBTextAnchor? {
- let resolved = RDEPUBCFIResolver.resolve(cfi)
- let fileIndex: Int
- if let resolvedFileIndex = resolved.fileIndex {
- fileIndex = resolvedFileIndex
- } else if let href = resolved.href, let mappedFileIndex = hrefToFileIndex[href] {
- fileIndex = mappedFileIndex
- } else {
- return nil
- }
-
- guard let href = href(for: fileIndex) ?? resolved.href else { return nil }
- let chapterLength = max(chapterLength(forFileIndex: fileIndex) ?? 0, 1)
- let lastOffset = max(chapterLength - 1, 0)
- let recovery = RDEPUBCFIRecoveryEngine.recover(
- cfi: cfi,
- cfiMap: fileCFIMap[fileIndex],
- chapterText: fileTextMap[fileIndex],
- fragmentOffsets: fragmentOffsetsByHref[href] ?? [:],
- fallbackOffset: resolved.chapterOffset,
- lastOffset: lastOffset
- )
- let chapterOffset = recovery?.chapterOffset ?? min(max(resolved.chapterOffset ?? 0, 0), lastOffset)
- let fragmentID = resolved.fragmentID ?? nearestFragmentID(beforeOrAt: chapterOffset, inHref: href)
-
- return RDEPUBTextAnchor(
- fileIndex: fileIndex,
- row: row(forAbsoluteIndex: chapterOffset, inFileIndex: fileIndex),
- column: column(forAbsoluteIndex: chapterOffset, inFileIndex: fileIndex),
- chapterOffset: chapterOffset,
- fragmentID: fragmentID
- )
- }
-
- public func rangeAnchor(for cfiRange: RDEPUBCFIRange) -> RDEPUBTextRangeAnchor? {
- guard let start = anchor(for: cfiRange.start),
- let end = anchor(for: cfiRange.end),
- start.fileIndex == end.fileIndex else {
- return nil
- }
- return RDEPUBTextRangeAnchor(start: start, end: end)
- }
-
- public func cfi(for anchor: RDEPUBTextAnchor) -> RDEPUBCFI? {
- guard let href = href(for: anchor.fileIndex) else { return nil }
- let chapterOffset = chapterOffset(for: anchor)
- if let marker = preciseMarker(fileIndex: anchor.fileIndex, chapterOffset: chapterOffset) {
- let localOffset = max(chapterOffset - (marker.chapterOffset ?? 0), 0)
- return RDEPUBCFIGenerator.makeCFI(
- href: href,
- fileIndex: anchor.fileIndex,
- contentPath: marker.cfiPath,
- characterOffset: localOffset,
- textAssertion: textAssertion(fileIndex: anchor.fileIndex, offset: chapterOffset)
- )
- }
- return RDEPUBCFIGenerator.makeOffsetCFI(
- href: href,
- fileIndex: anchor.fileIndex,
- chapterOffset: chapterOffset,
- fragmentID: anchor.fragmentID,
- textAssertion: textAssertion(fileIndex: anchor.fileIndex, offset: chapterOffset)
- )
- }
-
- public func cfiRange(for rangeAnchor: RDEPUBTextRangeAnchor) -> RDEPUBCFIRange? {
- guard rangeAnchor.start.fileIndex == rangeAnchor.end.fileIndex,
- let href = href(for: rangeAnchor.start.fileIndex) else {
- return nil
- }
- let startOffset = chapterOffset(for: rangeAnchor.start)
- let endOffset = chapterOffset(for: rangeAnchor.end)
- let startCFI = cfi(for: rangeAnchor.start)
- let endCFI = cfi(for: rangeAnchor.end)
- if let startCFI, let endCFI {
- let parent = RDEPUBCFI(
- packagePath: startCFI.packagePath.commonPrefix(with: endCFI.packagePath),
- contentPath: startCFI.contentPath.commonPrefix(with: endCFI.contentPath)
- )
- return RDEPUBCFIRange(parent: parent, start: startCFI, end: endCFI)
- }
- return RDEPUBCFIGenerator.makeOffsetRangeCFI(
- href: href,
- fileIndex: rangeAnchor.start.fileIndex,
- startOffset: startOffset,
- endOffset: endOffset,
- fragmentID: rangeAnchor.start.fragmentID,
- startTextAssertion: textAssertion(
- fileIndex: rangeAnchor.start.fileIndex,
- offset: startOffset
- ),
- endTextAssertion: textAssertion(
- fileIndex: rangeAnchor.end.fileIndex,
- offset: endOffset
- )
- )
- }
-
- public func anchor(forGlobalIndex index: Int) -> RDEPUBTextAnchor? {
- guard let fileIndex = fileIndex(forCharacterPosition: index),
- let href = href(for: fileIndex) else {
- return nil
- }
-
- let chapterOffset = localOffsetInFile(at: fileIndex, forGlobalPosition: index) ?? 0
- let fragmentID = nearestFragmentID(beforeOrAt: chapterOffset, inHref: href)
- return RDEPUBTextAnchor(
- fileIndex: fileIndex,
- row: row(forAbsoluteIndex: chapterOffset, inFileIndex: fileIndex),
- column: column(forAbsoluteIndex: chapterOffset, inFileIndex: fileIndex),
- chapterOffset: chapterOffset,
- fragmentID: fragmentID
- )
- }
-
- public func pageNumber(for anchor: RDEPUBTextAnchor, in book: RDEPUBTextBook) -> Int? {
- guard let chapter = book.chapters.first(where: { $0.spineIndex == anchor.fileIndex }) else { return nil }
- let basePageIndex = chapter.pages.first?.absolutePageIndex ?? 0
- let resolvedOffset = chapterOffset(for: anchor)
- return chapter.pages.firstIndex { page in
- NSLocationInRange(resolvedOffset, page.contentRange)
- }.map { $0 + basePageIndex }
- }
-
- public func href(for fileIndex: Int) -> String? {
- fileIndexToHref[fileIndex]
- }
-
- public func chapterIndex(for href: String) -> Int? {
- hrefToChapterIndex[href]
- }
-
- public func chapterStartOffset(forFileIndex fileIndex: Int) -> Int? {
- guard let href = href(for: fileIndex),
- let chapterIndex = hrefToChapterIndex[href],
- chapterStartOffsets.indices.contains(chapterIndex) else {
- return nil
- }
- return chapterStartOffsets[chapterIndex]
- }
-
- public func chapterLength(forFileIndex fileIndex: Int) -> Int? {
- guard let href = href(for: fileIndex),
- let chapterIndex = hrefToChapterIndex[href],
- chapterLengths.indices.contains(chapterIndex) else {
- return nil
- }
- return chapterLengths[chapterIndex]
- }
-
- public func chapterOffset(for anchor: RDEPUBTextAnchor) -> Int {
- anchor.chapterOffset
- }
-
- public func globalIndex(for anchor: RDEPUBTextAnchor) -> Int {
- let chapterOffset = chapterOffset(for: anchor)
- let baseOffset = chapterStartOffset(forFileIndex: anchor.fileIndex) ?? 0
- let chapterLength = max(chapterLength(forFileIndex: anchor.fileIndex) ?? 0, 0)
- let lastOffset = max(chapterLength - 1, 0)
- return baseOffset + min(max(chapterOffset, 0), lastOffset)
- }
-
- public func absoluteIndex(for anchor: RDEPUBTextAnchor) -> Int {
- globalIndex(for: anchor)
- }
-
- public func chapterRange(for rangeAnchor: RDEPUBTextRangeAnchor) -> NSRange {
- let start = chapterOffset(for: rangeAnchor.start)
- let end = max(start, chapterOffset(for: rangeAnchor.end))
- return NSRange(location: start, length: max(end - start, 0))
- }
-
- public func globalRange(for rangeAnchor: RDEPUBTextRangeAnchor) -> NSRange {
- let start = globalIndex(for: rangeAnchor.start)
- let end = max(start, globalIndex(for: rangeAnchor.end))
- return NSRange(location: start, length: max(end - start, 0))
- }
-
- public func absoluteRange(for rangeAnchor: RDEPUBTextRangeAnchor) -> NSRange {
- globalRange(for: rangeAnchor)
- }
-
- public func location(
- for anchor: RDEPUBTextAnchor,
- in chapter: RDEPUBTextChapter,
- bookIdentifier: String?
- ) -> RDEPUBLocation {
- let chapterOffset = self.chapterOffset(for: anchor)
- let totalLength = max(chapter.attributedContent.length - 1, 1)
- let progression = Double(min(max(chapterOffset, 0), totalLength)) / Double(totalLength)
- return RDEPUBLocation(
- bookIdentifier: bookIdentifier,
- href: chapter.href,
- progression: progression,
- lastProgression: progression,
- fragment: anchor.fragmentID,
- rangeAnchor: RDEPUBTextRangeAnchor(start: anchor, end: anchor),
- cfi: cfi(for: anchor)?.rawValue,
- lastCFI: cfi(for: anchor)?.rawValue
- )
- }
-
- public func location(
- for rangeAnchor: RDEPUBTextRangeAnchor,
- in chapter: RDEPUBTextChapter,
- bookIdentifier: String?
- ) -> RDEPUBLocation {
- let start = chapterOffset(for: rangeAnchor.start)
- let end = max(start, chapterOffset(for: rangeAnchor.end))
- let totalLength = max(chapter.attributedContent.length - 1, 1)
- let clampedStart = min(max(start, 0), totalLength)
- let clampedEnd = min(max(end, clampedStart), totalLength)
- return RDEPUBLocation(
- bookIdentifier: bookIdentifier,
- href: chapter.href,
- progression: Double(clampedStart) / Double(totalLength),
- lastProgression: Double(clampedEnd) / Double(totalLength),
- fragment: rangeAnchor.start.fragmentID,
- rangeAnchor: rangeAnchor,
- cfi: cfi(for: rangeAnchor.start)?.rawValue,
- lastCFI: cfi(for: rangeAnchor.end)?.rawValue,
- rangeCFI: cfiRange(for: rangeAnchor)?.rawValue
- )
- }
-
- public func row(forAbsoluteIndex index: Int, inFileIndex fileIndex: Int) -> Int {
- guard let rows = fileRowColumnMap[fileIndex], !rows.isEmpty else { return 0 }
- if let rowIndex = rows.first(where: { $0.contains(index) })?.row {
- return rowIndex
- }
- return rows.last?.row ?? 0
- }
-
- public func column(forAbsoluteIndex index: Int, inFileIndex fileIndex: Int) -> Int {
- guard let rows = fileRowColumnMap[fileIndex], !rows.isEmpty else { return 0 }
- if let rowEntry = rows.first(where: { $0.contains(index) }) {
- return max(index - rowEntry.startOffset, 0)
- }
- guard let lastRow = rows.last else { return 0 }
- return max(index - lastRow.startOffset, 0)
- }
-
- public func chapterOffset(fileIndex: Int, row: Int, column: Int) -> Int? {
- guard let rows = fileRowColumnMap[fileIndex], !rows.isEmpty else { return nil }
- let normalizedRow = min(max(row, 0), rows.count - 1)
- let rowEntry = rows[normalizedRow]
- let maxColumn = max(rowEntry.endOffset - rowEntry.startOffset, 0)
- return rowEntry.startOffset + min(max(column, 0), maxColumn)
- }
-
- public func absoluteIndex(fileIndex: Int, row: Int, column: Int) -> Int? {
- guard let chapterOffset = chapterOffset(fileIndex: fileIndex, row: row, column: column),
- let baseOffset = chapterStartOffset(forFileIndex: fileIndex) else {
- return nil
- }
- return baseOffset + chapterOffset
- }
-
- public func fileIndex(forCharacterPosition index: Int) -> Int? {
- guard totalCharacterCount > 0 else { return nil }
- let normalized = min(max(index, 0), max(totalCharacterCount - 1, 0))
- for (href, chapterIndex) in hrefToChapterIndex {
- guard chapterStartOffsets.indices.contains(chapterIndex),
- chapterLengths.indices.contains(chapterIndex),
- let fileIndex = hrefToFileIndex[href] else {
- continue
- }
-
- let start = chapterStartOffsets[chapterIndex]
- let length = chapterLengths[chapterIndex]
- let endExclusive = start + max(length, 1)
- if normalized >= start && normalized < endExclusive {
- return fileIndex
- }
- }
- return fileIndexToHref.keys.sorted().last
- }
-
- public func localOffsetInFile(at fileIndex: Int, forGlobalPosition index: Int) -> Int? {
- guard let start = chapterStartOffset(forFileIndex: fileIndex),
- let chapterLength = chapterLength(forFileIndex: fileIndex) else {
- return nil
- }
- let normalized = min(max(index, start), start + max(chapterLength - 1, 0))
- return normalized - start
- }
-
- private func clampedOffset(_ index: Int, in chapter: RDEPUBTextChapter) -> Int {
- let lastOffset = max(chapter.attributedContent.length - 1, 0)
- return min(max(index, 0), lastOffset)
- }
-
- private func nearestFragmentID(beforeOrAt offset: Int, in chapter: RDEPUBTextChapter) -> String? {
- var bestID: String?
- var bestOffset = -1
-
- for (id, fragOffset) in chapter.fragmentOffsets {
- if fragOffset <= offset && fragOffset > bestOffset {
- bestOffset = fragOffset
- bestID = id
- }
- }
-
- return bestID
- }
-
- private func nearestFragmentID(beforeOrAt offset: Int, inHref href: String) -> String? {
- guard let fragmentOffsets = fragmentOffsetsByHref[href] else {
- return nil
- }
-
- var bestID: String?
- var bestOffset = -1
- for (id, fragmentOffset) in fragmentOffsets where fragmentOffset <= offset && fragmentOffset > bestOffset {
- bestOffset = fragmentOffset
- bestID = id
- }
- return bestID
- }
-
- private func preciseMarker(fileIndex: Int, chapterOffset: Int) -> RDEPUBCFIMarker? {
- guard let markers = fileCFIMap[fileIndex]?.markers else { return nil }
- return markers
- .filter {
- guard let start = $0.chapterOffset,
- let length = $0.textNodeLength,
- length > 0 else {
- return false
- }
- return chapterOffset >= start && chapterOffset < start + length
- }
- .max { lhs, rhs in
- let leftStart = lhs.chapterOffset ?? 0
- let rightStart = rhs.chapterOffset ?? 0
- if leftStart != rightStart {
- return leftStart < rightStart
- }
- return (lhs.textNodeLength ?? 0) > (rhs.textNodeLength ?? 0)
- }
- }
-
- private func textAssertion(fileIndex: Int, offset: Int) -> RDEPUBCFITextAssertion? {
- guard let text = fileTextMap[fileIndex], !text.isEmpty else { return nil }
- let nsText = text as NSString
- let length = nsText.length
- guard length > 0 else { return nil }
-
- let location = min(max(offset, 0), max(length - 1, 0))
- let exactLength = min(16, max(length - location, 0))
- guard exactLength > 0 else { return nil }
-
- let prefixStart = max(location - 8, 0)
- let suffixStart = min(location + exactLength, length)
- return RDEPUBCFITextAssertion(
- prefix: prefixStart < location
- ? nsText.substring(with: NSRange(location: prefixStart, length: location - prefixStart))
- : nil,
- exact: nsText.substring(with: NSRange(location: location, length: exactLength)),
- suffix: suffixStart < length
- ? nsText.substring(with: NSRange(location: suffixStart, length: min(8, length - suffixStart)))
- : nil
- )
- }
-
- private static func makeRowColumnIndices(for text: String) -> [RDEPUBRowColumnIndex] {
- let nsText = text as NSString
- let length = nsText.length
- guard length > 0 else {
- return [RDEPUBRowColumnIndex(row: 0, startOffset: 0, endOffset: 0)]
- }
-
- var rows: [RDEPUBRowColumnIndex] = []
- var rowNumber = 0
- var lineStart = 0
-
- nsText.enumerateSubstrings(
- in: NSRange(location: 0, length: length),
- options: [.byLines, .substringNotRequired]
- ) { _, substringRange, enclosingRange, _ in
- let startOffset = enclosingRange.location
- let lineLength = max(substringRange.length, 0)
- let endOffset = max(startOffset + max(lineLength - 1, 0), startOffset)
- rows.append(
- RDEPUBRowColumnIndex(
- row: rowNumber,
- startOffset: startOffset,
- endOffset: min(endOffset, max(length - 1, 0))
- )
- )
- rowNumber += 1
- lineStart = enclosingRange.location + enclosingRange.length
- }
-
- if rows.isEmpty {
- rows.append(RDEPUBRowColumnIndex(row: 0, startOffset: 0, endOffset: max(length - 1, 0)))
- } else if lineStart == length, text.hasSuffix("\n") {
- rows.append(RDEPUBRowColumnIndex(row: rowNumber, startOffset: length, endOffset: length))
- }
-
- return rows
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextPositionConverter.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextPositionConverter.swift
deleted file mode 100644
index 14bcab9..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextPositionConverter.swift
+++ /dev/null
@@ -1,70 +0,0 @@
-
-import Foundation
-
-public struct RDEPUBTextPositionConverter {
-
- public let book: RDEPUBTextBook
-
- public init(book: RDEPUBTextBook) {
- self.book = book
- }
-
- public var totalCharacterCount: Int {
- book.indexTable.totalCharacterCount
- }
-
- public func globalIndex(for anchor: RDEPUBTextAnchor) -> Int {
- book.indexTable.globalIndex(for: anchor)
- }
-
- public func globalRange(for rangeAnchor: RDEPUBTextRangeAnchor) -> NSRange {
- book.indexTable.globalRange(for: rangeAnchor)
- }
-
- public func fileIndex(forCharacterPosition index: Int) -> Int? {
- book.indexTable.fileIndex(forCharacterPosition: index)
- }
-
- public func localOffsetInFile(at fileIndex: Int, forGlobalPosition index: Int) -> Int? {
- book.indexTable.localOffsetInFile(at: fileIndex, forGlobalPosition: index)
- }
-
- public func anchor(forCharacterPosition index: Int) -> RDEPUBTextAnchor? {
- book.indexTable.anchor(forGlobalIndex: index)
- }
-
- public func anchor(for location: RDEPUBLocation) -> RDEPUBTextAnchor? {
- book.indexTable.anchor(for: location)
- }
-
- public func pageNumber(for anchor: RDEPUBTextAnchor) -> Int? {
- book.indexTable.pageNumber(for: anchor, in: book).map { $0 + 1 }
- }
-
- public func pageNumber(forCharacterPosition index: Int) -> Int? {
- guard let anchor = anchor(forCharacterPosition: index) else {
- return nil
- }
- return pageNumber(for: anchor)
- }
-
- public func location(
- for anchor: RDEPUBTextAnchor,
- bookIdentifier: String?
- ) -> RDEPUBLocation? {
- guard let chapter = book.chapters.first(where: { $0.spineIndex == anchor.fileIndex }) else {
- return nil
- }
- return book.indexTable.location(for: anchor, in: chapter, bookIdentifier: bookIdentifier)
- }
-
- public func location(
- for rangeAnchor: RDEPUBTextRangeAnchor,
- bookIdentifier: String?
- ) -> RDEPUBLocation? {
- guard let chapter = book.chapters.first(where: { $0.spineIndex == rangeAnchor.start.fileIndex }) else {
- return nil
- }
- return book.indexTable.location(for: rangeAnchor, in: chapter, bookIdentifier: bookIdentifier)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextRenderer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextRenderer.swift
deleted file mode 100644
index 7ae82d3..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextRenderer.swift
+++ /dev/null
@@ -1,337 +0,0 @@
-import UIKit
-
-public extension NSAttributedString.Key {
-
- static let rdPageBlockRange = NSAttributedString.Key("com.RDEpubReader.epub.pageBlockRange")
-
- static let rdPageBlockIndex = NSAttributedString.Key("com.RDEpubReader.epub.pageBlockIndex")
-
- static let rdPageFragmentID = NSAttributedString.Key("com.RDEpubReader.epub.pageFragmentID")
-
- static let rdPageAttachmentKind = NSAttributedString.Key("com.RDEpubReader.epub.pageAttachmentKind")
-
- static let rdPageBlockKind = NSAttributedString.Key("com.RDEpubReader.epub.pageBlockKind")
-
- static let rdPageSemanticHints = NSAttributedString.Key("com.RDEpubReader.epub.pageSemanticHints")
-
- static let rdPageAttachmentPlacement = NSAttributedString.Key("com.RDEpubReader.epub.pageAttachmentPlacement")
-}
-
-public enum RDEPUBTextBlockKind: String, Codable, Equatable, CaseIterable {
- case paragraph
- case list
- case table
- case code
- case blockquote
- case attachment
- case generic
-}
-
-public enum RDEPUBTextSemanticHint: String, Codable, Equatable, CaseIterable {
- case avoidPageBreakInside
- case keepWithNext
- case pageBreakBefore
- case pageBreakAfter
- case pageRelate
-}
-
-public enum RDEPUBTextAttachmentPlacement: String, Codable, Equatable {
- case inline
- case baseline
- case centered
-}
-
-public struct RDEPUBTextRenderStyle {
-
- public var font: UIFont
-
- public var lineSpacing: CGFloat
-
- public var textColor: UIColor?
-
- public var backgroundColor: UIColor?
-
- public init(font: UIFont, lineSpacing: CGFloat, textColor: UIColor? = nil, backgroundColor: UIColor? = nil) {
- self.font = font
- self.lineSpacing = lineSpacing
- self.textColor = textColor
- self.backgroundColor = backgroundColor
- }
-}
-
-public struct RDEPUBTextLayoutConfig: Equatable {
-
- public var frameWidth: CGFloat
-
- public var frameHeight: CGFloat
-
- public var edgeInsets: UIEdgeInsets
-
- public var numberOfColumns: Int
-
- public var columnGap: CGFloat
-
- public var avoidOrphans: Bool
-
- public var avoidWidows: Bool
-
- public var avoidPageBreakInsideEnabled: Bool
-
- public var hyphenation: Bool
-
- public var imageMaxHeightRatio: CGFloat
-
- public var fallbackViewportSize: CGSize
-
- public init(
- frameWidth: CGFloat = 0,
- frameHeight: CGFloat = 0,
- edgeInsets: UIEdgeInsets = .zero,
- numberOfColumns: Int = 1,
- columnGap: CGFloat = 20,
- avoidOrphans: Bool = true,
- avoidWidows: Bool = true,
- avoidPageBreakInsideEnabled: Bool = true,
- hyphenation: Bool = true,
- imageMaxHeightRatio: CGFloat = 0.85,
- fallbackViewportSize: CGSize = CGSize(width: 375, height: 667)
- ) {
- self.frameWidth = frameWidth
- self.frameHeight = frameHeight
- self.edgeInsets = edgeInsets
- self.numberOfColumns = max(1, numberOfColumns)
- self.columnGap = max(0, columnGap)
- self.avoidOrphans = avoidOrphans
- self.avoidWidows = avoidWidows
- self.avoidPageBreakInsideEnabled = avoidPageBreakInsideEnabled
- self.hyphenation = hyphenation
- self.imageMaxHeightRatio = imageMaxHeightRatio
- self.fallbackViewportSize = fallbackViewportSize
- }
-
- public static let `default` = RDEPUBTextLayoutConfig()
-
- public func resolvedFrameSize(fallback pageSize: CGSize) -> CGSize {
- CGSize(
- width: max(frameWidth > 0 ? frameWidth : pageSize.width, 1),
- height: max(frameHeight > 0 ? frameHeight : pageSize.height, 1)
- )
- }
-
- public func contentRect(fallback pageSize: CGSize) -> CGRect {
- let size = resolvedFrameSize(fallback: pageSize)
- return CGRect(origin: .zero, size: size).inset(by: edgeInsets)
- }
-
- public func columnRects(fallback pageSize: CGSize) -> [CGRect] {
- let rect = contentRect(fallback: pageSize)
- let columns = max(1, numberOfColumns)
- guard columns > 1 else { return [rect] }
-
- let totalGap = CGFloat(columns - 1) * columnGap
- let columnWidth = max((rect.width - totalGap) / CGFloat(columns), 1)
-
- return (0.. RDEPUBRenderedChapterContent
-
- func renderChapter(
- html: String,
- baseURL: URL?,
- style: RDEPUBTextRenderStyle
- ) throws -> RDEPUBRenderedChapterContent
-}
-
-public extension RDEPUBTextRenderer {
- func renderChapter(
- html: String,
- baseURL: URL?,
- style: RDEPUBTextRenderStyle
- ) throws -> RDEPUBRenderedChapterContent {
- let context = RDEPUBTextChapterContext(
- href: "",
- title: "",
- html: html,
- baseURL: baseURL,
- stylesheet: RDEPUBTextStyleSheetPackage(layers: []),
- resourceDiagnostics: []
- )
- return try renderChapter(request: RDEPUBTextChapterRenderRequest(context: context, style: style))
- }
-}
-
-public enum RDEPUBTextRenderingError: LocalizedError {
- case htmlEncodingFailed
- case htmlImportFailed
-
- public var errorDescription: String? {
- switch self {
- case .htmlEncodingFailed:
- return "HTML 编码失败"
- case .htmlImportFailed:
- return "HTML 富文本导入失败"
- }
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextSearchEngine.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextSearchEngine.swift
deleted file mode 100644
index 7af5b10..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEPUBTextSearchEngine.swift
+++ /dev/null
@@ -1,128 +0,0 @@
-import Foundation
-
-final class RDEPUBTextSearchEngine: RDEPUBSearchEngine {
- private let textBook: RDEPUBTextBook
- private let publication: RDEPUBPublication
-
- init(textBook: RDEPUBTextBook, publication: RDEPUBPublication) {
- self.textBook = textBook
- self.publication = publication
- }
-
- func search(keyword: String) -> [RDEPUBSearchMatch] {
- let normalizedKeyword = keyword.trimmingCharacters(in: .whitespacesAndNewlines)
- guard !normalizedKeyword.isEmpty else {
- return []
- }
-
- var matches: [RDEPUBSearchMatch] = []
- for chapter in textBook.chapters {
- guard let chapterData = textBook.chapterData(for: chapter.href) else { continue }
- let source = chapter.attributedContent.string as NSString
- let fullLength = source.length
- guard fullLength > 0 else {
- continue
- }
-
- let normalizedHref = publication.resourceResolver.normalizedHref(chapter.href) ?? chapter.href
- var localMatchIndex = 0
- var searchRange = NSRange(location: 0, length: fullLength)
-
- while searchRange.length > 0 {
- let foundRange = source.range(of: normalizedKeyword, options: [.caseInsensitive], range: searchRange)
- guard foundRange.location != NSNotFound else {
- break
- }
-
- let progressionDenominator = max(fullLength - 1, 1)
- let progression = Double(foundRange.location) / Double(progressionDenominator)
- let rangeAnchor = chapterData.rangeAnchor(for: foundRange)
- matches.append(
- RDEPUBSearchMatch(
- href: normalizedHref,
- progression: progression,
- previewText: previewText(in: source, matchRange: foundRange),
- localMatchIndex: localMatchIndex,
- rangeLocation: foundRange.location,
- rangeLength: foundRange.length,
- rangeAnchor: rangeAnchor,
- cfi: chapterData.indexTable.cfi(for: rangeAnchor.start)?.rawValue,
- rangeCFI: chapterData.indexTable.cfiRange(for: rangeAnchor)?.rawValue
- )
- )
-
- localMatchIndex += 1
- let nextLocation = foundRange.location + max(foundRange.length, 1)
- if nextLocation >= fullLength {
- break
- }
- searchRange = NSRange(location: nextLocation, length: fullLength - nextLocation)
- }
- }
-
- return matches
- }
-
- private func previewText(in text: NSString, matchRange: NSRange) -> String {
- let previewRadius = 12
- let start = max(matchRange.location - previewRadius, 0)
- let end = min(matchRange.location + matchRange.length + previewRadius, text.length)
- let range = NSRange(location: start, length: max(end - start, 0))
- return text.substring(with: range).trimmingCharacters(in: .whitespacesAndNewlines)
- }
-
- static func searchWithoutPublication(textBook: RDEPUBTextBook, keyword: String) -> [RDEPUBSearchMatch] {
- let normalizedKeyword = keyword.trimmingCharacters(in: .whitespacesAndNewlines)
- guard !normalizedKeyword.isEmpty else { return [] }
-
- var matches: [RDEPUBSearchMatch] = []
- for chapter in textBook.chapters {
- let chapterData = RDEPUBChapterData(
- chapter: chapter,
- indexTable: RDEPUBTextIndexTable(chapters: [chapter])
- )
- let source = chapter.attributedContent.string as NSString
- let fullLength = source.length
- guard fullLength > 0 else { continue }
-
- var localMatchIndex = 0
- var searchRange = NSRange(location: 0, length: fullLength)
-
- while searchRange.length > 0 {
- let foundRange = source.range(of: normalizedKeyword, options: [.caseInsensitive], range: searchRange)
- guard foundRange.location != NSNotFound else { break }
-
- let progressionDenominator = max(fullLength - 1, 1)
- let progression = Double(foundRange.location) / Double(progressionDenominator)
- let rangeAnchor = chapterData.rangeAnchor(for: foundRange)
- let cfi = chapterData.indexTable.cfi(for: rangeAnchor.start)
- let cfiRange = chapterData.indexTable.cfiRange(for: rangeAnchor)
- let previewRadius = 12
- let previewStart = max(foundRange.location - previewRadius, 0)
- let previewEnd = min(foundRange.location + foundRange.length + previewRadius, fullLength)
- let previewRange = NSRange(location: previewStart, length: max(previewEnd - previewStart, 0))
- let previewText = source.substring(with: previewRange).trimmingCharacters(in: .whitespacesAndNewlines)
-
- matches.append(
- RDEPUBSearchMatch(
- href: chapter.href,
- progression: progression,
- previewText: previewText,
- localMatchIndex: localMatchIndex,
- rangeLocation: foundRange.location,
- rangeLength: foundRange.length,
- rangeAnchor: rangeAnchor,
- cfi: cfi?.rawValue ?? cfiRange?.start.rawValue,
- rangeCFI: cfiRange?.rawValue
- )
- )
-
- localMatchIndex += 1
- let nextLocation = foundRange.location + max(foundRange.length, 1)
- if nextLocation >= fullLength { break }
- searchRange = NSRange(location: nextLocation, length: fullLength - nextLocation)
- }
- }
- return matches
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEpubPlainTextBookBuilder.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEpubPlainTextBookBuilder.swift
deleted file mode 100644
index e0cdc60..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/RDEpubPlainTextBookBuilder.swift
+++ /dev/null
@@ -1,158 +0,0 @@
-import UIKit
-
-public final class RDEpubPlainTextBookBuilder {
- private let renderer: RDEPUBTextRenderer
- private let layoutConfig: RDEPUBTextLayoutConfig
-
- public init(
- renderer: RDEPUBTextRenderer = RDEPUBDTCoreTextRenderer(),
- layoutConfig: RDEPUBTextLayoutConfig = .default
- ) {
- self.renderer = renderer
- self.layoutConfig = layoutConfig
- }
-
- public func build(
- textFileURL: URL,
- pageSize: CGSize,
- style: RDEPUBTextRenderStyle
- ) throws -> RDEPUBTextBook {
- let rawText = rd_decodeTextFile(url: textFileURL)
- let chapterSpecs = splitChapters(from: rawText)
-
- var chapters: [RDEPUBTextChapter] = []
- var flatPages: [RDEPUBTextPage] = []
-
- for (index, spec) in chapterSpecs.enumerated() {
- let html = wrapTextAsHTML(spec.content)
- let request = RDEPUBTextChapterRenderRequest(
- context: RDEPUBTextChapterContext(
- href: "chapter_\(index).xhtml",
- title: spec.title ?? "第 \(index + 1) 章",
- html: html,
- baseURL: nil,
- stylesheet: RDEPUBTextStyleSheetPackage(layers: []),
- resourceDiagnostics: []
- ),
- style: style,
- pageSize: pageSize,
- layoutConfig: layoutConfig
- )
- let rendered = try renderer.renderChapter(request: request)
-
- let content = NSMutableAttributedString(attributedString: rendered.attributedString)
- let layoutFrames = content.length > 0 ? content.rd_paginatedFrames(size: pageSize, config: layoutConfig) : []
- let effectiveFrames = layoutFrames.isEmpty && content.length > 0
- ? [
- RDEPUBTextLayoutFrame(
- contentRange: NSRange(location: 0, length: content.length),
- breakReason: .chapterEnd,
- blockRange: nil,
- attachmentRanges: [],
- attachmentKinds: [],
- blockKinds: [],
- semanticHints: [],
- attachmentPlacements: [],
- trailingFragmentID: nil,
- diagnostics: [
- "page break: chapterEnd",
- "page range: \(NSStringFromRange(NSRange(location: 0, length: content.length)))"
- ]
- )
- ]
- : layoutFrames
-
- let href = "chapter_\(index).xhtml"
- let chapterAttributedContent = content.copy() as! NSAttributedString
- let pages = effectiveFrames.enumerated().map { localPageIndex, frame in
- let range = frame.contentRange
- return RDEPUBTextPage(
- absolutePageIndex: flatPages.count + localPageIndex,
- chapterIndex: index,
- spineIndex: index,
- href: href,
- chapterTitle: spec.title ?? "第 \(index + 1) 章",
- pageIndexInChapter: localPageIndex,
- totalPagesInChapter: effectiveFrames.count,
- chapterContent: chapterAttributedContent,
- contentRange: range,
- pageStartOffset: range.location,
- pageEndOffset: range.location + max(range.length - 1, 0),
- metadata: frame.metadata
- )
- }
-
- chapters.append(
- RDEPUBTextChapter(
- chapterIndex: index,
- spineIndex: index,
- href: href,
- title: spec.title ?? "第 \(index + 1) 章",
- attributedContent: chapterAttributedContent,
- fragmentOffsets: [:],
- cfiMap: nil,
- pageBreakReasons: pages.map { $0.metadata.breakReason },
- pages: pages
- )
- )
- flatPages.append(contentsOf: pages)
- }
-
- return RDEPUBTextBook(chapters: chapters, pages: flatPages)
- }
-
- private struct ChapterSpec {
- let title: String?
- let content: String
- }
-
- private func splitChapters(from text: String) -> [ChapterSpec] {
- let pattern = #"^(第[零一二三四五六七八九十百千万\d]+[章节回卷].*)$"#
- guard let regex = try? NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines]) else {
- return [ChapterSpec(title: nil, content: text)]
- }
-
- let nsText = text as NSString
- let matches = regex.matches(in: text, range: NSRange(location: 0, length: nsText.length))
- guard !matches.isEmpty else {
- return [ChapterSpec(title: nil, content: text)]
- }
-
- var specs: [ChapterSpec] = []
- for (i, match) in matches.enumerated() {
- let titleRange = match.range(at: 1)
- let title = nsText.substring(with: titleRange).trimmingCharacters(in: .whitespacesAndNewlines)
- let contentStart = titleRange.location + titleRange.length
- let contentEnd = (i + 1 < matches.count) ? matches[i + 1].range.location : nsText.length
- let contentRange = NSRange(location: contentStart, length: contentEnd - contentStart)
- let content = nsText.substring(with: contentRange).trimmingCharacters(in: .whitespacesAndNewlines)
- if !content.isEmpty {
- specs.append(ChapterSpec(title: title, content: content))
- }
- }
-
- if specs.isEmpty {
- return [ChapterSpec(title: nil, content: text)]
- }
- return specs
- }
-
- private func wrapTextAsHTML(_ text: String) -> String {
- let paragraphs = text.components(separatedBy: "\n").filter { !$0.isEmpty }
- let body = paragraphs.map { "\($0)
" }.joined(separator: "\n")
- return "\(body)"
- }
-
- private func rd_decodeTextFile(url: URL) -> String {
- if let content = try? NSString(contentsOf: url, encoding: String.Encoding.utf8.rawValue) as String {
- return content
- }
- if let content = try? NSString(contentsOf: url, encoding: 0x80000632) as String {
- return content
- }
- if let content = try? NSString(contentsOf: url, encoding: 0x80000631) as String {
- return content
- }
- return ""
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBCSSCompatibilityLayer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBCSSCompatibilityLayer.swift
deleted file mode 100644
index 66f0799..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBCSSCompatibilityLayer.swift
+++ /dev/null
@@ -1,193 +0,0 @@
-import Foundation
-
-struct RDEPUBCSSCompatibilityLayer {
-
- var policy = RDEPUBStyleCompatibilityPolicy()
-
- func sanitize(_ css: String) -> RDEPUBCSSCompatibilityResult {
- var rewritten = css
- var normalized: [String] = []
- var unsupported: [String] = []
-
- if policy.normalizeLineHeight {
- let result = clampNumericProperty(
- in: rewritten,
- property: "line-height",
- minValue: 0.9,
- maxValue: 2.4
- )
- rewritten = result.css
- normalized += result.normalizedRules
- }
-
- if policy.normalizeTextIndent {
- let result = clampLengthProperty(
- in: rewritten,
- property: "text-indent",
- maxAbsolutePX: 64
- )
- rewritten = result.css
- normalized += result.normalizedRules
- }
-
- let alignmentIndentResult = addTextIndentResetForAlignedBlocks(in: rewritten)
- rewritten = alignmentIndentResult.css
- normalized += alignmentIndentResult.normalizedRules
-
- if !policy.allowPublisherMargins {
- let result = clampLengthProperty(
- in: rewritten,
- property: "margin",
- maxAbsolutePX: 64
- )
- rewritten = result.css
- normalized += result.normalizedRules
- }
-
- if policy.fallbackUnsupportedWritingModes,
- rewritten.range(of: "writing-mode", options: [.caseInsensitive]) != nil {
- unsupported.append("writing-mode")
- rewritten += "\n\nhtml, body { writing-mode: horizontal-tb !important; }"
- normalized.append("writing-mode")
- }
-
- if policy.clampImagesToViewport {
- rewritten += """
-
- img, svg, table, video, canvas {
- max-width: 100% !important;
- height: auto !important;
- box-sizing: border-box !important;
- }
- table {
- overflow-wrap: anywhere;
- border-collapse: collapse;
- }
- """
- normalized.append("media-size-clamp")
- }
-
- return RDEPUBCSSCompatibilityResult(
- css: rewritten,
- report: RDEPUBCSSCompatibilityReport(
- unsupportedRules: unsupported,
- normalizedRules: normalized,
- fontFailures: []
- )
- )
- }
-
- private func clampNumericProperty(
- in css: String,
- property: String,
- minValue: Double,
- maxValue: Double
- ) -> (css: String, normalizedRules: [String]) {
- guard let regex = try? NSRegularExpression(
- pattern: #"(?i)\b"# + NSRegularExpression.escapedPattern(for: property) + #"\s*:\s*([0-9]*\.?[0-9]+)\s*;"#
- ) else {
- return (css, [])
- }
-
- let nsCSS = css as NSString
- var rewritten = css
- var normalized: [String] = []
-
- for match in regex.matches(in: css, range: NSRange(location: 0, length: nsCSS.length)).reversed() {
- guard match.numberOfRanges > 1 else { continue }
- let rawValue = nsCSS.substring(with: match.range(at: 1))
-
- guard let value = Double(rawValue), value < minValue || value > maxValue else { continue }
-
- let clamped = min(max(value, minValue), maxValue)
- if let range = Range(match.range, in: rewritten) {
- rewritten.replaceSubrange(range, with: "\(property): \(String(format: "%.3f", clamped));")
- normalized.append(property)
- }
- }
- return (rewritten, normalized)
- }
-
- private func clampLengthProperty(
- in css: String,
- property: String,
- maxAbsolutePX: Double
- ) -> (css: String, normalizedRules: [String]) {
- guard let regex = try? NSRegularExpression(
- pattern: #"(?i)\b"# + NSRegularExpression.escapedPattern(for: property) + #"\s*:\s*(-?[0-9]*\.?[0-9]+)px\s*;"#
- ) else {
- return (css, [])
- }
-
- let nsCSS = css as NSString
- var rewritten = css
- var normalized: [String] = []
-
- for match in regex.matches(in: css, range: NSRange(location: 0, length: nsCSS.length)).reversed() {
- guard match.numberOfRanges > 1 else { continue }
- let rawValue = nsCSS.substring(with: match.range(at: 1))
-
- guard let value = Double(rawValue), abs(value) > maxAbsolutePX else { continue }
-
- let clamped = value < 0 ? -maxAbsolutePX : maxAbsolutePX
- if let range = Range(match.range, in: rewritten) {
- rewritten.replaceSubrange(range, with: "\(property): \(String(format: "%.0f", clamped))px;")
- normalized.append(property)
- }
- }
- return (rewritten, normalized)
- }
-
- private func addTextIndentResetForAlignedBlocks(
- in css: String
- ) -> (css: String, normalizedRules: [String]) {
- guard let regex = try? NSRegularExpression(
- pattern: #"(?is)([^{}]+)\{([^{}]*)\}"#
- ) else {
- return (css, [])
- }
-
- let nsCSS = css as NSString
- var rewritten = css
- var normalized: [String] = []
-
- for match in regex.matches(in: css, range: NSRange(location: 0, length: nsCSS.length)).reversed() {
- guard match.numberOfRanges > 2 else { continue }
- let selector = nsCSS.substring(with: match.range(at: 1))
- let declarations = nsCSS.substring(with: match.range(at: 2))
-
- guard declaresRightOrCenterAlignment(declarations),
- !declaresProperty("text-indent", in: declarations) else {
- continue
- }
-
- let replacement = "\(selector){\(declarations)\n text-indent: 0 !important;\n}"
- if let range = Range(match.range, in: rewritten) {
- rewritten.replaceSubrange(range, with: replacement)
- normalized.append("aligned-text-indent-reset")
- }
- }
-
- return (rewritten, normalized)
- }
-
- private func declaresRightOrCenterAlignment(_ declarations: String) -> Bool {
- guard let regex = try? NSRegularExpression(
- pattern: #"(?i)\btext-align\s*:\s*(right|center)\b"#
- ) else {
- return false
- }
- let range = NSRange(location: 0, length: (declarations as NSString).length)
- return regex.firstMatch(in: declarations, range: range) != nil
- }
-
- private func declaresProperty(_ property: String, in declarations: String) -> Bool {
- guard let regex = try? NSRegularExpression(
- pattern: #"(?i)\b"# + NSRegularExpression.escapedPattern(for: property) + #"\s*:"#
- ) else {
- return false
- }
- let range = NSRange(location: 0, length: (declarations as NSString).length)
- return regex.firstMatch(in: declarations, range: range) != nil
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBFontFallbackResolver.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBFontFallbackResolver.swift
deleted file mode 100644
index 6ee3e85..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBFontFallbackResolver.swift
+++ /dev/null
@@ -1,21 +0,0 @@
-import UIKit
-
-struct RDEPUBFontFallbackResolver {
-
- static func fallbackChain(requestedFamily: String?, embeddedFamily: String?) -> RDEPUBFontFallbackChain {
-
- let preferredCJK = ["PingFang SC", "Heiti SC", "Songti SC"]
-
- let preferredLatin = ["Times New Roman", "Georgia", "Helvetica Neue"]
- return RDEPUBFontFallbackChain(
- requestedFamily: requestedFamily,
- embeddedFamily: embeddedFamily,
- systemFallbacks: preferredCJK + preferredLatin,
- finalFallback: UIFont.systemFont(ofSize: UIFont.systemFontSize).familyName
- )
- }
-
- static func resolveFont(sourceFont: UIFont?, baseFont: UIFont) -> UIFont {
- RDEPUBFontNormalizer.normalizedFont(from: sourceFont, baseFont: baseFont)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBStyleCompatibilityModels.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBStyleCompatibilityModels.swift
deleted file mode 100644
index a06967e..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/Compatibility/RDEPUBStyleCompatibilityModels.swift
+++ /dev/null
@@ -1,101 +0,0 @@
-import Foundation
-
-public struct RDEPUBStyleCompatibilityPolicy: Equatable {
-
- public var allowPublisherFonts: Bool
-
- public var allowPublisherMargins: Bool
-
- public var normalizeLineHeight: Bool
-
- public var normalizeTextIndent: Bool
-
- public var clampImagesToViewport: Bool
-
- public var fallbackUnsupportedWritingModes: Bool
-
- public init(
- allowPublisherFonts: Bool = true,
- allowPublisherMargins: Bool = true,
- normalizeLineHeight: Bool = true,
- normalizeTextIndent: Bool = true,
- clampImagesToViewport: Bool = true,
- fallbackUnsupportedWritingModes: Bool = true
- ) {
- self.allowPublisherFonts = allowPublisherFonts
- self.allowPublisherMargins = allowPublisherMargins
- self.normalizeLineHeight = normalizeLineHeight
- self.normalizeTextIndent = normalizeTextIndent
- self.clampImagesToViewport = clampImagesToViewport
- self.fallbackUnsupportedWritingModes = fallbackUnsupportedWritingModes
- }
-}
-
-public struct RDEPUBFontFallbackChain: Codable, Equatable {
-
- public var requestedFamily: String?
-
- public var embeddedFamily: String?
-
- public var systemFallbacks: [String]
-
- public var finalFallback: String
-
- public init(
- requestedFamily: String? = nil,
- embeddedFamily: String? = nil,
- systemFallbacks: [String] = ["PingFang SC", "Heiti SC", "Times New Roman"],
- finalFallback: String = ".AppleSystemUIFont"
- ) {
- self.requestedFamily = requestedFamily
- self.embeddedFamily = embeddedFamily
- self.systemFallbacks = systemFallbacks
- self.finalFallback = finalFallback
- }
-}
-
-public struct RDEPUBEmbeddedFontDescriptor: Codable, Equatable {
-
- public var family: String?
-
- public var href: String
-
- public var format: String?
-
- public var weight: Int?
-
- public var style: String?
-}
-
-public struct RDEPUBFontRegistrationResult: Codable, Equatable {
-
- public var descriptor: RDEPUBEmbeddedFontDescriptor
-
- public var fileURL: URL?
-
- public var didRegister: Bool
-
- public var errorDescription: String?
-}
-
-public struct RDEPUBCSSCompatibilityReport: Codable, Equatable {
-
- public var unsupportedRules: [String]
-
- public var normalizedRules: [String]
-
- public var fontFailures: [String]
-
- public init(unsupportedRules: [String] = [], normalizedRules: [String] = [], fontFailures: [String] = []) {
- self.unsupportedRules = unsupportedRules
- self.normalizedRules = normalizedRules
- self.fontFailures = fontFailures
- }
-}
-
-struct RDEPUBCSSCompatibilityResult {
-
- var css: String
-
- var report: RDEPUBCSSCompatibilityReport
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBAttachmentNormalizer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBAttachmentNormalizer.swift
deleted file mode 100644
index ffae4bf..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBAttachmentNormalizer.swift
+++ /dev/null
@@ -1,257 +0,0 @@
-import UIKit
-
-#if canImport(DTCoreText)
-import DTCoreText
-#endif
-
-struct RDEPUBAttachmentNormalizer {
-
- private static var didLogFootnoteAttachment = false
-
- private static var didLogCoverAttachment = false
-
-#if canImport(DTCoreText)
-
- func normalize(
- _ attachment: DTTextAttachment,
- fontPointSize: CGFloat,
- maxImageSize: CGSize
- ) {
- Self.normalizeAttachmentLayoutForWXRead(
- attachment,
- fontPointSize: fontPointSize,
- maxImageSize: maxImageSize
- )
- }
-#endif
-
-#if canImport(DTCoreText)
-
- static func normalizeAttachmentLayoutForWXRead(
- _ attachment: DTTextAttachment,
- fontPointSize: CGFloat,
- maxImageSize: CGSize? = nil
- ) {
-
- let pointSize = max(fontPointSize, 1)
-
- let originalSize = attachment.originalSize
-
- if isFootnoteAttachment(attachment) {
-
- let targetWidth = max(round(pointSize), 1)
-
- let aspectRatio = originalSize.height > 0 ? originalSize.width / originalSize.height : 1
-
- let targetHeight = max(round(targetWidth / max(aspectRatio, 0.1)), 1)
-
- attachment.displaySize = CGSize(width: targetWidth, height: targetHeight)
-
- attachment.verticalAlignment = .baseline
-
- if !didLogFootnoteAttachment {
- didLogFootnoteAttachment = true
- }
- return
- }
-
- if isCoverAttachment(attachment) {
-
- let maxSize = maxImageSize ?? defaultMaxImageSize(fontPointSize: pointSize)
- if originalSize.width > 0, originalSize.height > 0 {
-
- let scale = min(maxSize.width / originalSize.width, maxSize.height / originalSize.height)
- attachment.displaySize = CGSize(
- width: round(originalSize.width * scale),
- height: round(originalSize.height * scale)
- )
- } else {
-
- attachment.displaySize = maxSize
- }
-
- attachment.verticalAlignment = .baseline
-
- if !didLogCoverAttachment {
- didLogCoverAttachment = true
- }
- return
- }
-
- var resolvedSize = attachment.displaySize
-
- if resolvedSize.width <= 0 || resolvedSize.height <= 0 {
- resolvedSize = originalSize
- }
-
- if resolvedSize.width <= 0 || resolvedSize.height <= 0 {
- resolvedSize = CGSize(width: pointSize, height: pointSize)
- }
-
- if let maxImageSize,
- resolvedSize.width > 0,
- resolvedSize.height > 0,
- (resolvedSize.width > maxImageSize.width || resolvedSize.height > maxImageSize.height) {
-
- let scale = min(maxImageSize.width / resolvedSize.width, maxImageSize.height / resolvedSize.height)
- resolvedSize = CGSize(
- width: round(resolvedSize.width * scale),
- height: round(resolvedSize.height * scale)
- )
- }
-
- attachment.displaySize = CGSize(width: round(resolvedSize.width), height: round(resolvedSize.height))
-
- attachment.verticalAlignment = .center
- }
-
- static func prepareHTMLElementForReaderRendering(
- _ element: DTHTMLElement,
- style: RDEPUBTextRenderStyle,
- maxImageSize: CGSize? = nil
- ) {
-
- guard let attachment = element.textAttachment else { return }
-
- let pointSize = max(element.fontDescriptor.pointSize, style.font.pointSize)
-
- let fallbackSize = CGSize(
- width: defaultMaxImageSize(fontPointSize: pointSize).width,
- height: defaultMaxImageSize(fontPointSize: pointSize).height
- )
-
- normalizeAttachmentLayoutForWXRead(
- attachment,
- fontPointSize: pointSize,
- maxImageSize: maxImageSize ?? fallbackSize
- )
-
- if isFootnoteAttachment(attachment) {
- element.displayStyle = .inline
- } else if isCoverAttachment(attachment) {
- element.displayStyle = .block
- }
- }
-
- private static func isFootnoteAttachment(_ attachment: DTTextAttachment) -> Bool {
-
- let lowercasedClasses = ((attachment.attributes["class"] as? String) ?? "").lowercased()
- if lowercasedClasses.contains("qqreader-footnote") {
- return true
- }
- let altText = attachment.attributes["alt"] as? String
- return hasFootnoteAltText(altText) && isFootnoteSizedImage(attachment.originalSize)
- }
-
- private static func isCoverAttachment(_ attachment: DTTextAttachment) -> Bool {
-
- let lowercasedClasses = ((attachment.attributes["class"] as? String) ?? "").lowercased()
-
- let lowercasedPath = attachment.contentURL?.lastPathComponent.lowercased()
- ?? ((attachment.attributes["src"] as? String) ?? "").lowercased()
- return lowercasedClasses.contains("rd-front-cover-image") || lowercasedPath == "cover.jpg"
- }
-
- private static func defaultMaxImageSize(fontPointSize: CGFloat) -> CGSize {
-
- let referenceViewport = CGSize(width: 375, height: 667)
-
- let horizontalInset = max(round(fontPointSize), 16)
-
- let verticalInset = max(round(fontPointSize * 1.5), 28)
-
- return CGSize(
- width: max(round(referenceViewport.width - horizontalInset * 2), 1),
- height: max(round((referenceViewport.height - verticalInset * 2) * 0.85), 1)
- )
- }
-#endif
-
- static func normalizeAttachmentDisplayIfNeeded(
- in attributes: inout [NSAttributedString.Key: Any],
- font: UIFont
- ) {
-
- guard let attachment = attributes[.attachment] else { return }
-
-#if canImport(DTCoreText)
-
- if let textAttachment = attachment as? DTTextAttachment {
- normalizeAttachmentLayoutForWXRead(textAttachment, fontPointSize: font.pointSize)
- attributes[.attachment] = textAttachment
- return
- }
-#endif
-
- if let textAttachment = attachment as? NSTextAttachment, textAttachment.bounds.height <= 0 {
-
- let targetHeight = max(round(font.pointSize * 0.86), 1)
- textAttachment.bounds = CGRect(x: 0, y: 0, width: targetHeight, height: targetHeight)
- attributes[.attachment] = textAttachment
- }
- }
-
- static func attachmentKind(for attributes: [NSAttributedString.Key: Any]) -> RDEPUBTextAttachmentKind? {
- // Check for footnote attachments first — they should show tooltip, not image viewer
- if isFootnoteAttachmentInAttributes(attributes) {
- return .footnote
- }
-
- if let attachment = attributes[.attachment] as? NSTextAttachment {
-
- if attachment.image != nil || attachment.fileType?.lowercased().contains("image") == true {
- return .image
- }
- return .generic
- }
-
- for value in attributes.values {
- let typeName = String(describing: type(of: value)).lowercased()
-
- if typeName.contains("attachment") {
- return typeName.contains("image") ? .image : .generic
- }
- }
-
- return nil
- }
-
- private static func isFootnoteAttachmentInAttributes(_ attributes: [NSAttributedString.Key: Any]) -> Bool {
-#if canImport(DTCoreText)
- if let textAttachment = attributes[.attachment] as? DTTextAttachment {
- return isFootnoteAttachment(textAttachment)
- }
-#endif
- guard let fileAttachment = attributes[.attachment] as? NSTextAttachment else {
- return false
- }
- let label = fileAttachment.accessibilityLabel
- let lowercasedLabel = (label ?? "").lowercased()
- if lowercasedLabel.contains("qqreader-footnote") {
- return true
- }
- let imageSize = fileAttachment.image?.size ?? fileAttachment.bounds.size
- return hasFootnoteAltText(label) && isFootnoteSizedImage(imageSize)
- }
-
- // Footnote images without the qqreader-footnote class are recognized by their
- // alt text carrying the note body. Short alts ("logo", "图1") are ordinary
- // accessibility descriptions, and note markers are small inline icons, so both
- // conditions must hold before an image is shrunk to footnote size.
- private static let minimumFootnoteAltTextLength = 8
-
- private static let maximumFootnoteImageDimension: CGFloat = 50
-
- private static func hasFootnoteAltText(_ text: String?) -> Bool {
- guard let trimmed = text?.trimmingCharacters(in: .whitespacesAndNewlines) else {
- return false
- }
- return trimmed.count >= minimumFootnoteAltTextLength
- }
-
- private static func isFootnoteSizedImage(_ size: CGSize) -> Bool {
- guard size.width > 0, size.height > 0 else { return false }
- return size.width <= maximumFootnoteImageDimension
- && size.height <= maximumFootnoteImageDimension
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBCFIMarkerInjector.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBCFIMarkerInjector.swift
deleted file mode 100644
index cb75f0a..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBCFIMarkerInjector.swift
+++ /dev/null
@@ -1,59 +0,0 @@
-import Foundation
-
-struct RDEPUBCFIMarkerInjector: RDEPUBTypesettingStage {
-
- func process(_ html: String, context: RDEPUBTypesettingInput) -> String {
-
- guard let regex = try? NSRegularExpression(
- pattern: #"<([A-Za-z][A-Za-z0-9:_-]*)([^>]*\s(?:id|xml:id)\s*=\s*['"]([^'"]+)['"][^>]*)>"#,
- options: [.caseInsensitive]
- ) else {
- return html
- }
-
- let nsHTML = html as NSString
-
- let matches = regex.matches(in: html, range: NSRange(location: 0, length: nsHTML.length))
- guard !matches.isEmpty else { return html }
-
- var rewritten = html
- for match in matches.reversed() {
-
- guard match.numberOfRanges > 3,
- let fullRange = Range(match.range(at: 0), in: rewritten),
- let tagNameRange = Range(match.range(at: 1), in: html),
- let attributesRange = Range(match.range(at: 2), in: html),
- let fragmentRange = Range(match.range(at: 3), in: html) else {
- continue
- }
-
- let tagName = String(html[tagNameRange])
- let attributes = String(html[attributesRange])
- let fragmentID = String(html[fragmentRange])
-
- guard attributes.range(of: "data-rd-cfi-marker", options: [.caseInsensitive]) == nil else {
- continue
- }
-
- let marker = RDEPUBCFIGenerator.makeOffsetCFI(
- href: context.href,
- fileIndex: context.spineIndex ?? 0,
- chapterOffset: 0,
- fragmentID: fragmentID
- ).rawValue
-
- let replacement = "<\(tagName)\(attributes) data-rd-cfi-marker=\"\(Self.escapeAttribute(marker))\">"
- rewritten.replaceSubrange(fullRange, with: replacement)
- }
-
- return rewritten
- }
-
- private static func escapeAttribute(_ value: String) -> String {
- value
- .replacingOccurrences(of: "&", with: "&")
- .replacingOccurrences(of: "\"", with: """)
- .replacingOccurrences(of: "<", with: "<")
- .replacingOccurrences(of: ">", with: ">")
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBDecryptingImageAttachment.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBDecryptingImageAttachment.swift
deleted file mode 100644
index 6869ca2..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBDecryptingImageAttachment.swift
+++ /dev/null
@@ -1,66 +0,0 @@
-import UIKit
-
-#if canImport(DTCoreText)
-import DTCoreText
-
-/// 支持加密图片的 DTCoreText 图片附件。
-///
-/// DTCoreText 解析 `![]()
` 时会直接读磁盘文件来取图并推算尺寸；
-/// 对加密图片该读取会解码失败，表现为 `image == nil` 且 `contentURL` 被保留。
-/// 本子类在 super 初始化完成后接管这种失败场景：
-/// 经 `RDEPUBResourceAccessRegistry` 反查 provider 解密数据并调用 `setImage`
-/// （setter 会自动补齐 originalSize / displaySize，后续 willFlush 阶段的
-/// 附件规范化与绘制均按明文图片的既有路径工作）。
-///
-/// 通过 `DTTextAttachment.registerClass(_:forTagName:)` 全局注册，
-/// 未启用 provider 的书行为与父类完全一致。
-final class RDEPUBDecryptingImageAttachment: DTImageTextAttachment {
-
- private static var didRegisterTagClass = false
-
- private static let registerLock = NSLock()
-
- /// 将本类注册为 `![]()
` 标签的附件类（进程内一次性，线程安全）
- static func registerTagClassIfNeeded() {
- registerLock.lock()
- defer { registerLock.unlock() }
- guard !didRegisterTagClass else { return }
- DTTextAttachment.registerClass(RDEPUBDecryptingImageAttachment.self, forTagName: "img")
- didRegisterTagClass = true
- }
-
- override init!(element: DTHTMLElement!, options: [AnyHashable: Any]! = [:]) {
- super.init(element: element, options: options)
- decryptImageIfNeeded()
- }
-
- /// DTCoreText / UIKit 在部分 HTML 图片路径会改用 NSTextAttachment 的
- /// `init(data:ofType:)` 创建附件。若子类未实现，Foundation 会直接触发
- /// “Use of unimplemented initializer” 致命错误。
- override init(data contentData: Data?, ofType uti: String?) {
- super.init(data: contentData, ofType: uti)
- if image == nil, let contentData {
- image = UIImage(data: contentData)
- }
- }
-
- required init?(coder: NSCoder) {
- super.init(coder: coder)
- }
-
- private func decryptImageIfNeeded() {
- // super 已成功取到图（明文图片 / data: 内联图）时不干预
- guard image == nil,
- let contentURL,
- contentURL.isFileURL,
- let data = RDEPUBResourceAccessRegistry.providedResourceData(at: contentURL.standardizedFileURL),
- let decrypted = UIImage(data: data) else {
- return
- }
- image = decrypted
- // 对齐 DTCoreText 本地图片加载成功的行为：置空 contentURL，
- // 避免下游误当作待加载的远程 / 磁盘图片再次直读密文
- self.contentURL = nil
- }
-}
-#endif
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBFontNormalizer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBFontNormalizer.swift
deleted file mode 100644
index be5f5c3..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBFontNormalizer.swift
+++ /dev/null
@@ -1,160 +0,0 @@
-import UIKit
-
-import CoreText
-
-struct RDEPUBFontNormalizer {
-
- private static var registeredFontPaths = Set()
-
- @discardableResult
- func registerEmbeddedFonts(
- html: String,
- inlinedCSS: String,
- input: RDEPUBTypesettingInput
- ) -> [RDEPUBFontRegistrationResult] {
-
- Self.registerEmbeddedFonts(
- in: inlinedCSS + "\n" + Self.inlineStyleCSS(in: html),
- chapterHref: input.href,
- resourceResolver: input.resourceResolver
- )
- }
-
- @discardableResult
- static func registerEmbeddedFonts(
- in css: String,
- chapterHref: String,
- resourceResolver: RDEPUBResourceResolver?
- ) -> [RDEPUBFontRegistrationResult] {
-
- guard let resourceResolver,
-
- let faceRegex = try? NSRegularExpression(pattern: #"@font-face\s*\{([\s\S]*?)\}"#, options: [.caseInsensitive]),
-
- let urlRegex = try? NSRegularExpression(pattern: #"url\(([^)]+)\)"#, options: [.caseInsensitive]) else {
- return []
- }
-
- var results: [RDEPUBFontRegistrationResult] = []
- let nsCSS = css as NSString
-
- for faceMatch in faceRegex.matches(in: css, range: NSRange(location: 0, length: nsCSS.length)) {
- guard faceMatch.numberOfRanges > 1 else { continue }
-
- let block = nsCSS.substring(with: faceMatch.range(at: 1))
- let nsBlock = block as NSString
-
- let family = declarationValue(named: "font-family", in: block)?
- .trimmingCharacters(in: CharacterSet(charactersIn: "\"'"))
-
- let weight = declarationValue(named: "font-weight", in: block).flatMap(Int.init)
-
- let style = declarationValue(named: "font-style", in: block)
-
- for urlMatch in urlRegex.matches(in: block, range: NSRange(location: 0, length: nsBlock.length)) {
- guard urlMatch.numberOfRanges > 1 else { continue }
-
- let rawReference = nsBlock.substring(with: urlMatch.range(at: 1))
- .trimmingCharacters(in: CharacterSet(charactersIn: "\"' \n\r\t"))
-
- let descriptor = RDEPUBEmbeddedFontDescriptor(
- family: family,
- href: rawReference,
- format: nil,
- weight: weight,
- style: style
- )
-
- guard !rawReference.isEmpty,
- !rawReference.hasPrefix("data:"),
- !rawReference.hasPrefix("http:"),
- !rawReference.hasPrefix("https:"),
-
- let fileURL = resourceResolver.fileURL(forReference: rawReference, relativeToHref: chapterHref) else {
-
- results.append(
- RDEPUBFontRegistrationResult(
- descriptor: descriptor,
- fileURL: nil,
- didRegister: false,
- errorDescription: "Font URL could not be resolved"
- )
- )
- continue
- }
-
- let didRegister = registerFontIfNeeded(at: fileURL)
- results.append(
- RDEPUBFontRegistrationResult(
- descriptor: descriptor,
- fileURL: fileURL,
- didRegister: didRegister,
- errorDescription: didRegister ? nil : "Font was already registered or registration failed"
- )
- )
- }
- }
- return results
- }
-
- @discardableResult
- static func registerFontIfNeeded(at fileURL: URL) -> Bool {
-
- let standardizedPath = fileURL.standardizedFileURL.path
-
- guard !registeredFontPaths.contains(standardizedPath) else { return true }
-
- let registered = CTFontManagerRegisterFontsForURL(fileURL as CFURL, .process, nil)
- if registered {
-
- registeredFontPaths.insert(standardizedPath)
- }
- return registered
- }
-
- static func normalizedFont(from sourceFont: UIFont?, baseFont: UIFont) -> UIFont {
- guard let sourceFont else {
- return baseFont
- }
-
- let traits = sourceFont.fontDescriptor.symbolicTraits.intersection([.traitBold, .traitItalic])
-
- if let descriptor = baseFont.fontDescriptor.withSymbolicTraits(traits) {
- return UIFont(descriptor: descriptor, size: baseFont.pointSize)
- }
-
- return baseFont
- }
-
- static func inlineStyleCSS(in html: String) -> String {
-
- guard let regex = try? NSRegularExpression(pattern: #"]*>([\s\S]*?)"#, options: [.caseInsensitive]) else {
- return ""
- }
- let nsHTML = html as NSString
-
- return regex.matches(in: html, range: NSRange(location: 0, length: nsHTML.length))
- .compactMap { match in
- guard match.numberOfRanges > 1 else { return nil }
- return nsHTML.substring(with: match.range(at: 1))
- }
- .joined(separator: "\n")
- }
-
- private static func declarationValue(named name: String, in block: String) -> String? {
-
- guard let regex = try? NSRegularExpression(
- pattern: #"(?i)\b"# + NSRegularExpression.escapedPattern(for: name) + #"\s*:\s*([^;]+)"#
- ) else {
- return nil
- }
- let nsBlock = block as NSString
-
- guard let match = regex.firstMatch(in: block, range: NSRange(location: 0, length: nsBlock.length)),
- match.numberOfRanges > 1 else {
- return nil
- }
-
- return nsBlock.substring(with: match.range(at: 1)).trimmingCharacters(in: .whitespacesAndNewlines)
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBFragmentMarkerInjector.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBFragmentMarkerInjector.swift
deleted file mode 100644
index 45272af..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBFragmentMarkerInjector.swift
+++ /dev/null
@@ -1,68 +0,0 @@
-
-import Foundation
-
-struct RDEPUBFragmentMarkerInjector: RDEPUBTypesettingStage {
-
- func process(_ html: String, context: RDEPUBTypesettingInput) -> String {
- Self.injectFragmentMarkers(into: html)
- }
-
- func extractOffsets(from attributedString: NSMutableAttributedString) -> [String: Int] {
- Self.extractFragmentOffsets(from: attributedString)
- }
-
- static func injectFragmentMarkers(into html: String) -> String {
- guard let regex = try? NSRegularExpression(pattern: #"(<[^>]+\sid="([^"]+)"[^>]*>)"#, options: [.caseInsensitive]) else {
- return html
- }
- return regex.stringByReplacingMatches(
- in: html,
- options: [],
- range: NSRange(location: 0, length: html.utf16.count),
- withTemplate: "${id=$2}$1"
- )
- }
-
-
-
-
-
- static func extractFragmentOffsets(from attributedString: NSMutableAttributedString) -> [String: Int] {
-
- let markerPattern = #"\$\{id=([^}]+)\}"#
- guard let regex = try? NSRegularExpression(pattern: markerPattern, options: []) else {
- return [:]
- }
-
-
- let mutableString = NSMutableString(string: attributedString.string)
-
- var fragmentOffsets: [String: Int] = [:]
-
- var searchRange = NSRange(location: 0, length: mutableString.length)
-
- var offsetAdjustment = 0
-
-
- while let match = regex.firstMatch(in: mutableString as String, options: [], range: searchRange) {
-
- let fullMatch = mutableString.substring(with: match.range) as NSString
- let fragmentID = fullMatch
- .replacingOccurrences(of: #"\$\{id="#, with: "", options: .regularExpression, range: NSRange(location: 0, length: fullMatch.length))
- .replacingOccurrences(of: #"\}"#, with: "", options: .regularExpression)
-
- let adjustedLocation = max(0, match.range.location + offsetAdjustment)
-
- fragmentOffsets[fragmentID] = adjustedLocation
-
- attributedString.deleteCharacters(in: match.range)
- mutableString.deleteCharacters(in: match.range)
-
- offsetAdjustment -= match.range.length
-
- searchRange = NSRange(location: match.range.location, length: mutableString.length - match.range.location)
- }
-
- return fragmentOffsets
- }
-}
diff --git a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBHTMLNormalizer.swift b/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBHTMLNormalizer.swift
deleted file mode 100644
index 10aaa02..0000000
--- a/Sources/RDEpubReaderView/Sources/RDEpubReaderView/EPUBTextRendering/Typesetter/RDEPUBHTMLNormalizer.swift
+++ /dev/null
@@ -1,270 +0,0 @@
-import Foundation
-
-struct RDEPUBHTMLNormalizer: RDEPUBTypesettingStage {
-
- func process(_ html: String, context: RDEPUBTypesettingInput) -> String {
- Self.normalizeHTML(html)
- }
-
- static func normalizeHTML(_ html: String) -> String {
- var cleanedHTML = html
-
- let replacements: [(pattern: String, template: String)] = [
- (#"分页符"#, ""),
- (#"\r"#, "\n"),
- (#"\n+"#, "\n")
- ]
-
- for replacement in replacements {
- if let regex = try? NSRegularExpression(pattern: replacement.pattern, options: [.caseInsensitive]) {
- cleanedHTML = regex.stringByReplacingMatches(
- in: cleanedHTML,
- options: [],
- range: NSRange(location: 0, length: cleanedHTML.utf16.count),
- withTemplate: replacement.template
- )
- }
- }
-
- cleanedHTML = normalizeAttachmentHTMLMarkers(in: cleanedHTML)
- cleanedHTML = normalizeBodyLeadingSpacing(in: cleanedHTML)
- return cleanedHTML
- }
-
- private static func normalizeAttachmentHTMLMarkers(in html: String) -> String {
- var normalized = html
-
- if let bodyPicContainerRegex = try? NSRegularExpression(
- pattern: #"]*class\s*=\s*["'][^"']*\b(?:qrbodyPic|bodyPic)\b[^"']*["'][^>]*)>([\s\S]*?)"#,
- options: [.caseInsensitive]
- ) {
- normalized = replaceMatches(
- using: bodyPicContainerRegex,
- in: normalized
- ) { tag in
-
- guard let imageTagRegex = try? NSRegularExpression(pattern: #"]*>"#, options: [.caseInsensitive]) else {
- return tag
- }
-
-
- return replaceMatches(
- using: imageTagRegex,
- in: tag
- ) { imageTag in
- mergeHTMLAttributes(
- into: imageTag,
- requiredClass: "bodyPic",
- styleFragments: [
- "wr-vertical-center-style:2",
- "max-width:100%",
- "height:auto",
- "display:block",
- "margin-left:auto",
- "margin-right:auto"
- ]
- )
- }
- }
- }
-
-
- if let footnoteRegex = try? NSRegularExpression(
- pattern: #"]*class\s*=\s*["'][^"']*\bqqreader-footnote\b[^"']*["'][^>]*)>"#,
- options: [.caseInsensitive]
- ) {
- normalized = replaceMatches(
- using: footnoteRegex,
- in: normalized
- ) { tag in
-
- mergeHTMLAttributes(
- into: tag,
- requiredClass: nil,
- styleFragments: [
- "width:1em",
- "height:1em",
- "vertical-align:middle",
- "display:inline-block"
- ]
- )
- }
- }
-
-
- if let coverRegex = try? NSRegularExpression(
- pattern: #"]*class\s*=\s*["'][^"']*\bfrontCover\b[^"']*["'][^>]*)>\s*(]*>)\s*"#,
- options: [.caseInsensitive]
- ) {
- normalized = replaceMatches(
- using: coverRegex,
- in: normalized
- ) { tag in
-
- guard let imageTagRegex = try? NSRegularExpression(pattern: #"]*>"#, options: [.caseInsensitive]),
- let imageMatch = imageTagRegex.firstMatch(
- in: tag,
- options: [],
- range: NSRange(location: 0, length: (tag as NSString).length)
- ),
- let imageRange = Range(imageMatch.range, in: tag) else {
- return tag
- }
-
- let imageTag = String(tag[imageRange])
- let normalizedImageTag = mergeHTMLAttributes(
- into: imageTag,
- requiredClass: "rd-front-cover-image",
- styleFragments: [
- "display:block",
- "width:100%",
- "height:auto",
- "margin-left:auto",
- "margin-right:auto"
- ]
- )
- return tag.replacingCharacters(in: imageRange, with: normalizedImageTag)
- }
- }
-
- return normalized
- }
-
- private static func normalizeBodyLeadingSpacing(in html: String) -> String {
- var normalized = html
-
- if let bodyStartRegex = try? NSRegularExpression(
- pattern: #"(]*>)\s+"#,
- options: [.caseInsensitive]
- ) {
- normalized = bodyStartRegex.stringByReplacingMatches(
- in: normalized,
- options: [],
- range: NSRange(location: 0, length: (normalized as NSString).length),
- withTemplate: "$1"
- )
- }
-
- if let bodyEndRegex = try? NSRegularExpression(
- pattern: #"\s+(