ReadViewSDK/Sources/RDReaderView/EPUBCore/CFI/RDEPUBCFICompatibility.swift

import Foundation

public enum RDEPUBCFICompatibility {
    public static func parseLossy(_ rawValue: String?) -> RDEPUBCFI? {
        try? RDEPUBCFIParser.parse(rawValue)
    }

    public static func parseRangeLossy(_ rawValue: String?) -> RDEPUBCFIRange? {
        if let parsed = try? RDEPUBCFIParser.parseRange(rawValue) {
            return parsed
        }

        guard let rawValue,
              !rawValue.isEmpty else {
            return nil
        }

        let separators = ["..", "-"]
        let separator = separators.first(where: { rawValue.contains($0) })
        guard let separator else { return nil }
        let parts = rawValue.components(separatedBy: separator)
        guard parts.count == 2,
              let start = parseLossy(parts[0]),
              let end = parseLossy(parts[1]) else {
            return nil
        }
        return RDEPUBCFIRange(parent: nil, start: start, end: end)
    }
}