{
  "reference": "EterBase/CRC32.cpp",
  "reference_sha256": "80bbbc71a273097830279d96c7d7ac28df6d043675711eb1b6f28a9801a83016",
  "priority": "P4",
  "contracts": [],
  "functions": {
    "GetCRC32": {
      "impl": [
        "src/platform/EterBase/CRC32.cpp:GetCRC32"
      ],
      "status": "ADAPTED",
      "note": "platform CRC32 table implementation; same polynomial and GetCRC32 values (checked against every stored filename_crc)",
      "test": "tests/port/port_eterpack_test.cpp (103 packs, 54891 entries, first-registered wins, 4 SECURITY rejects)"
    },
    "GetCaseCRC32": {
      "status": "PORTED",
      "impl": [
        "src/platform/EterBase/CRC32.cpp:GetCaseCRC32"
      ],
      "test": [
        "tests/port/port_utils_test.cpp"
      ],
      "note": "Verbatim 40250 loop (UPPER fold); CRCTable generated from 0xEDB88320, identical to the literal 40250 table."
    },
    "GetHFILECRC32": {
      "status": "ADAPTED",
      "impl": [
        "src/platform/EterBase/CRC32.cpp:GetHFILECRC32"
      ],
      "test": [
        "tests/port/port_utils_test.cpp"
      ],
      "note": "40250 maps the file (CreateFile + CreateFileMapping/MapViewOfFile from offset 0) and CRCs the whole view; the port reads the whole FILE* into a buffer. Invariant: same CRC of the full file, the handle's position is unchanged, 0 when the file cannot be opened."
    },
    "GetFileCRC32": {
      "status": "ADAPTED",
      "impl": [
        "src/platform/EterBase/CRC32.cpp:GetFileCRC32"
      ],
      "test": [
        "tests/port/port_utils_test.cpp"
      ],
      "note": "40250 maps the file (CreateFile + CreateFileMapping/MapViewOfFile from offset 0) and CRCs the whole view; the port reads the whole FILE* into a buffer. Invariant: same CRC of the full file, the handle's position is unchanged, 0 when the file cannot be opened. Callers: GuildMarkUploader/GuildMarkDownloader symbol CRC, root pack CRC report."
    },
    "GetFileSize": {
      "status": "ADAPTED",
      "impl": [
        "src/platform/EterBase/CRC32.cpp:GetFileSize"
      ],
      "test": [
        "tests/port/port_utils_test.cpp"
      ],
      "note": "CreateFile + GetFileSize -> fopen + ftell(SEEK_END); 0 when the file is missing (40250 returns 0 on INVALID_HANDLE_VALUE). Caller: GuildMarkDownloader symbol size."
    }
  }
}