From 460c52653ab0dcca6f19a4f492ed2c5e4e963ab0 Mon Sep 17 00:00:00 2001 From: toma Date: Wed, 25 Nov 2009 17:56:58 +0000 Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features. BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- mimelib/binhex.cpp | 858 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 858 insertions(+) create mode 100644 mimelib/binhex.cpp (limited to 'mimelib/binhex.cpp') diff --git a/mimelib/binhex.cpp b/mimelib/binhex.cpp new file mode 100644 index 00000000..db857f72 --- /dev/null +++ b/mimelib/binhex.cpp @@ -0,0 +1,858 @@ +// binhex.cpp + +#include +#include + +const char * const kPreamble = + "(This file must be converted with BinHex 4.0)"; + +const char kBinhexChars[] = + "!\"#$%&'()*+,-012345689@ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr"; +// 1 2 3 4 5 6 +// 0 123456789012345678901234567890123456789012345678901234567890123 + +#define DONE 0x7F +#define SKIP 0x7E +#define FAIL 0x7D + +const char kBinhexTable[] = { +// 0x00 + SKIP, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, SKIP, SKIP, FAIL, FAIL, SKIP, FAIL, FAIL, +// 0x10 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0x20 + SKIP, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, + 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, FAIL, FAIL, +// 0x30 + 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, FAIL, + 0x14, 0x15, DONE, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0x40 + 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, + 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, FAIL, +// 0x50 + 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, FAIL, + 0x2C, 0x2D, 0x2E, 0x2F, FAIL, FAIL, FAIL, FAIL, +// 0x60 + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, FAIL, + 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, FAIL, FAIL, +// 0x70 + 0x3D, 0x3E, 0x3F, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0x80 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0x90 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0xA0 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0xB0 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0xC0 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0xD0 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0xE0 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +// 0xF0 + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, + FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, +}; + +static DwUint16 kCrcTable[] = { + 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, + 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, + 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, + 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, + 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, + 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, + 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, + 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, + 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, + 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, + 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, + 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, + 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, + 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, + 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, + 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, + 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, + 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, + 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, + 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, + 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, + 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, + 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, + 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, + 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, + 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, + 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, + 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, + 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, + 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, + 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, + 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 +}; + + +inline DwUint16 UPDATE_CRC(DwUint16 crc, int ch) +{ + int idx = ((crc >> 8) ^ ch) & 0xff; + return (DwUint16) ((crc << 8) ^ kCrcTable[idx]); +} + + +struct DwBinhexEncodeCtx { + DwBinhexEncodeCtx(); + void PutChar(int aChar); + void EncodeChar(int aChar); + void Finalize(); + DwString mBuffer; + int mRunLen; + int mLastChar; + char mScratch[8]; // for 8-bit to ASCII conversion + int mScratchPos; // number of chars in mScratch + int mLineLength; +}; + + +DwBinhexEncodeCtx::DwBinhexEncodeCtx() +{ + mRunLen = 1; + mLastChar = -1; + mScratchPos = 0; + mLineLength = 0; +} + + +inline void DwBinhexEncodeCtx::PutChar(int aChar) +{ + if (mLineLength == 64) { + mBuffer.append(DW_EOL); + mLineLength = 0; + } + mBuffer.append((size_t) 1, (char) aChar); + ++mLineLength; +} + + +void DwBinhexEncodeCtx::EncodeChar(int aChar) +{ + // If we're in a run... + if (aChar == mLastChar && mRunLen < 255) { + ++mRunLen; + return; + } + // If we are not in a run, and have not just finished a run... + if (mRunLen == 1) { + // Output the current character, but watch for 0x90, which must be + // output as the two character sequence 0x90 0x00 + if (aChar != 0x90) { + mScratch[mScratchPos++] = (DwUint8) aChar; + } + else { + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) 0x00; + } + } + // If we just finished a run of length 2 ... + else if (mRunLen == 2) { + // Output the last character, but watch for 0x90, which must be + // output as the two character sequence 0x90 0x00 + if (mLastChar != 0x90) { + mScratch[mScratchPos++] = (DwUint8) mLastChar; + } + else { + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) 0x00; + } + // Output the current character, but watch for 0x90, which must be + // output as the two character sequence 0x90 0x00 + if (aChar != 0x90) { + mScratch[mScratchPos++] = (DwUint8) aChar; + } + else { + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) 0x00; + } + } + // If we just finished a run of length greater than 2 ... + else /* if (mRunLen > 2) */ { + // Output the run length code + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) mRunLen; + // Output the current character, but watch for 0x90, which must be + // output as the two character sequence 0x90 0x00 + if (aChar != 0x90) { + mScratch[mScratchPos++] = (DwUint8) aChar; + } + else { + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) 0x00; + } + } + mRunLen = 1; + mLastChar = aChar; + while (mScratchPos >= 3) { + int n = mScratch[0] >> 2; + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[0] << 4) | ((mScratch[1] >> 4) & 0x0f); + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[1] << 2) | ((mScratch[2] >> 6) & 0x03); + PutChar(kBinhexChars[n&0x3f]); + n = mScratch[2]; + PutChar(kBinhexChars[n&0x3f]); + for (int i=0; i < mScratchPos-3; ++i) { + mScratch[i] = mScratch[i+3]; + } + mScratchPos -= 3; + } +} + + +void DwBinhexEncodeCtx::Finalize() +{ + if (mRunLen == 1) { + } + else if (mRunLen == 2) { + // Output the last character, but watch for 0x90, which must be + // output as the two character sequence 0x90 0x00 + if (mLastChar != 0x90) { + mScratch[mScratchPos++] = (DwUint8) mLastChar; + } + else { + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) 0x00; + } + } + else /* if aCtx->mRunLen > 2) */ { + // Output the run length code + mScratch[mScratchPos++] = (DwUint8) 0x90; + mScratch[mScratchPos++] = (DwUint8) mRunLen; + } + int n; + while (mScratchPos >= 3) { + n = mScratch[0] >> 2; + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[0] << 4) | ((mScratch[1] >> 4) & 0x0f); + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[1] << 2) | ((mScratch[2] >> 6) & 0x03); + PutChar(kBinhexChars[n&0x3f]); + n = mScratch[2]; + PutChar(kBinhexChars[n&0x3f]); + for (int i=0; i < mScratchPos-3; ++i) { + mScratch[i] = mScratch[i+3]; + } + mScratchPos -= 3; + } + switch (mScratchPos) { + case 0: + break; + case 1: + n = mScratch[0] >> 2; + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[0] << 4); + PutChar(kBinhexChars[n&0x3f]); + case 2: + n = mScratch[0] >> 2; + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[0] << 4) | ((mScratch[1] >> 4) & 0x0f); + PutChar(kBinhexChars[n&0x3f]); + n = (mScratch[1] << 2); + PutChar(kBinhexChars[n&0x3f]); + } +} + +#if 0 + +//============================================================================ + + +struct DwBinhexDecodeCtx { + DwBinhexDecodeCtx(); + int GetChar(); + int DecodeChar(); + DwString mBinhexChars; + size_t mPos; + int mRunLen; + int mLastChar; + DwUint8 mScratch[4]; + int mScratchPos; + int mScratchCount; + int mError; +}; + + +DwBinhexDecodeCtx::DwBinhexDecodeCtx() +{ + mPos = 0; + mRunLen = 1; + mLastChar = -1; + mScratch[0] = 0; + mScratch[1] = 0; + mScratch[2] = 0; + mScratch[3] = 0; + mScratchPos = 0; + mScratchCount = 0; + mError = 0; +} + + +int DwBinhexDecodeCtx::GetChar() +{ + // Refill the scratch buffer, if necessary + if (mScratchCount == 0) { + // Get up to four ASCII chars + char cc[4]; + size_t k = 0; + size_t len = mBinhexChars.length(); + const DwString& binhexChars = mBinhexChars; + while (k < (size_t) 4 && mPos < len) { + int ch = binhexChars[mPos++] & 0xff; + ch = kBinhexTable[ch]; + switch (ch) { + case DONE: + goto BREAK_1; + case SKIP: + break; + case FAIL: + mError = 1; // error! + return -1; + default: + cc[k++] = (char) ch; + break; + } + } + BREAK_1: + // Convert the ASCII chars to 8-bit chars + mScratch[0] = 0; + mScratch[1] = 0; + mScratch[2] = 0; + mScratchCount = 0; + mScratchPos = 0; + switch (k) { + case 4: + mScratch[2] |= (DwUint8) (cc[3] & 0x3f); + // fall through + case 3: + mScratch[2] |= (DwUint8) (cc[2] << 6); + mScratch[1] |= (DwUint8) ((cc[2] >> 2) & 0x0f); + ++mScratchCount; + // fall through + case 2: + mScratch[1] |= (DwUint8) (cc[1] << 4); + mScratch[0] |= (DwUint8) ((cc[1] >> 4) & 0x03); + ++mScratchCount; + // fall through + case 1: + mScratch[0] |= (DwUint8) (cc[0] << 2); + ++mScratchCount; + case 0: + break; + } + } + // Return an 8-bit char, or -1 if there are no more chars + int ch; + if (mScratchCount > 0) { + --mScratchCount; + ch = mScratch[mScratchPos++] & 0xff; + } + else { + ch = -1; + } + return ch; +} + + +int DwBinhexDecodeCtx::DecodeChar() +{ + int ch; + if (mRunLen > 1) { + ch = mLastChar; + --mRunLen; + } + else /* if (mRunLen == 1) */ { + ch = GetChar(); + // 0x90 is the escape character + if ((ch & 0xff) == 0x90) { + ch = GetChar(); + if (ch == -1) { + // end of buffer or illegal character + mError = 1; // error! + } + else if (ch == 0) { + // 0x90 0x00 is decoded to 0x90 + ch = 0x90; + mRunLen = 1; + } + else if (ch == 1) { + // Could be interpreted as a run of length 1, but in all + // likelihood, it's an error. + mError = 1; // error! + ch = -1; + mRunLen = 1; + } + else if (ch >= 2) { + // 0x90 n indicates a run of length n + mRunLen = ch - 1; + ch = mLastChar; + } + } + } + mLastChar = ch; + return ch; +} + + +//============================================================================ + + +DwBinhex::DwBinhex() +{ + Initialize(); +} + + +DwBinhex::~DwBinhex() +{ +} + + +void DwBinhex::Initialize() +{ + memset(mFileName, 0, sizeof(mFileName)); + memset(mFileType, 0, sizeof(mFileType)); + memset(mFileCreator, 0, sizeof(mFileCreator)); + mFlag1 = 0; + mFlag2 = 0; + mDataFork = mResourceFork = mBinhexChars = ""; +} + + +void DwBinhex::SetFileName(const char* aName) +{ + strncpy(mFileName, aName, 64); + mFileName[63] = 0; +} + + +const char* DwBinhex::FileName() const +{ + return mFileName; +} + + +void DwBinhex::SetFileType(const char* aType) +{ + memcpy(mFileType, aType, 4); +} + + +void DwBinhex::FileType(char* aBuf) const +{ + memcpy(aBuf, mFileType, 4); +} + + +void DwBinhex::SetFileCreator(const char* aCreator) +{ + memcpy(mFileCreator, aCreator, 4); +} + +void DwBinhex::FileCreator(char* aBuf) const +{ + memcpy(aBuf, mFileCreator, 4); +} + + +void DwBinhex::SetFlag1(DwUint8 aFlag) +{ + mFlag1 = aFlag; +} + + +DwUint8 DwBinhex::Flag1() const +{ + return mFlag1; +} + + +void DwBinhex::SetFlag2(DwUint8 aFlag) +{ + mFlag2 = aFlag; +} + + +DwUint8 DwBinhex::Flag2() const +{ + return mFlag2; +} + + +void DwBinhex::SetDataFork(const DwString& aStr) +{ + mDataFork = aStr; +} + + +const DwString& DwBinhex::DataFork() const +{ + return mDataFork; +} + + +void DwBinhex::SetResourceFork(const DwString& aStr) +{ + mResourceFork = aStr; +} + + +const DwString& DwBinhex::ResourceFork() const +{ + return mResourceFork; +} + + +void DwBinhex::SetBinhexChars(const DwString& aStr) +{ + mBinhexChars = aStr; +} + + +const DwString& DwBinhex::BinhexChars() const +{ + return mBinhexChars; +} + + +void DwBinhex::Encode() +{ + size_t bufSize = (mResourceFork.length()+2)/3*4 + + (mDataFork.length()+2)/3*4 + 27 + strlen(mFileName); + DwBinhexEncodeCtx ctx; + ctx.mBuffer.reserve(bufSize); + ctx.mBuffer.assign(kPreamble); + ctx.mBuffer.append(DW_EOL); + ctx.mBuffer.append(1, ':'); + ++ctx.mLineLength; + DwUint16 crc = 0; + size_t fileNameLen = strlen(mFileName); + int ch = fileNameLen; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + // File name + size_t j; + for (j=0; j < fileNameLen; ++j) { + ch = mFileName[j] & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + } + // Version + ch = 0; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + // File type + for (j=0; j < (size_t) 4; ++j) { + ch = mFileType[j] & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + } + // File creator + for (j=0; j < (size_t) 4; ++j) { + ch = mFileCreator[j] & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + } + // Flags + ch = mFlag1 & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = mFlag2 & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + // Data fork length + DwUint32 len = (DwUint32) mDataFork.length(); + ch = (len >> 24) & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = (len >> 16) & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = (len >> 8) & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = len & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + // Resource fork length + len = mResourceFork.length(); + ch = (len >> 24) & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = (len >> 16) & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = (len >> 8) & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + ch = len & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + // Header CRC + ch = (crc >> 8) & 0xff; + ctx.EncodeChar(ch); + ch = crc & 0xff; + ctx.EncodeChar(ch); + //===== End of header ===== + + // Data fork + crc = 0; + size_t dataForkLen = mDataFork.length(); + for (j=0; j < dataForkLen; ++j) { + ch = mDataFork[j] & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + } + // Data fork CRC + ch = (crc >> 8) & 0xff; + ctx.EncodeChar(ch); + ch = crc & 0xff; + ctx.EncodeChar(ch); + + // Resource fork + crc = 0; + size_t rsrcForkLen = mResourceFork.length(); + for (j=0; j < rsrcForkLen; ++j) { + ch = mResourceFork[j] & 0xff; + crc = UPDATE_CRC(crc, ch); + ctx.EncodeChar(ch); + } + // Resource fork CRC + ch = (crc >> 8) & 0xff; + ctx.EncodeChar(ch); + ch = crc & 0xff; + ctx.EncodeChar(ch); + + ctx.Finalize(); + + ctx.mBuffer.append(1, ':'); + ctx.mBuffer.append(DW_EOL); + + mBinhexChars = ctx.mBuffer; +} + + +int DwBinhex::Decode() +{ + // Initialize + memset(mFileName, 0, sizeof(mFileName)); + memset(mFileType, 0, sizeof(mFileType)); + memset(mFileCreator, 0, sizeof(mFileCreator)); + mFlag1 = 0; + mFlag2 = 0; + mDataFork = mResourceFork = ""; + + DwBinhexDecodeCtx ctx; + ctx.mBinhexChars = mBinhexChars; + // Find the preamble + ctx.mPos = ctx.mBinhexChars.find("(This file must be converted " + "with BinHex", 0); + if (ctx.mPos == DwString::npos) { + return -1; // error! + } + ctx.mPos += 40; + // Advance to just past the colon + ctx.mPos = ctx.mBinhexChars.find((char) ':', ctx.mPos); + if (ctx.mPos == DwString::npos) { + return -1; // error! + } + ++ctx.mPos; + DwUint16 crc = 0; + // File name length + int ch = ctx.DecodeChar(); + if (ch < 1 || 63 < ch) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + size_t fileNameLen = (size_t) ch; + // File name + size_t j; + for (j=0; j < fileNameLen; ++j) { + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mFileName[j] = (char) ch; + } + // Version + ch = ctx.DecodeChar(); + if (ch != 0) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + // File type + for (j=0; j < (size_t) 4; ++j) { + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mFileType[j] = (char) ch; + } + // File creator + for (j=0; j < (size_t) 4; ++j) { + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mFileCreator[j] = (char) ch; + } + // Flags + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mFlag1 = (DwUint8) ch; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mFlag2 = (DwUint8) ch; + // Data fork length + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + DwUint32 dataForkLen = ch & 0xff; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + dataForkLen <<= 8; + dataForkLen |= ch & 0xff; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + dataForkLen <<= 8; + dataForkLen |= ch & 0xff; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + dataForkLen <<= 8; + dataForkLen |= ch & 0xff; + // Resource fork length + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + DwUint32 rsrcForkLen = ch & 0xff; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + rsrcForkLen <<= 8; + rsrcForkLen |= ch & 0xff; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + rsrcForkLen <<= 8; + rsrcForkLen |= ch & 0xff; + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + rsrcForkLen <<= 8; + rsrcForkLen |= ch & 0xff; + // Header CRC + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + DwUint16 crc1 = (DwUint16) (ch & 0xff); + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc1 <<= 8; + crc1 |= (DwUint16) (ch & 0xff); + if (crc1 != crc) { + return -1; // error! + } + + // Data fork + crc = 0; + for (j=0; j < dataForkLen; ++j) { + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mDataFork.append((size_t) 1, (char) ch); + } + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc1 = (DwUint16) (ch & 0xff); + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc1 <<= 8; + crc1 |= (DwUint16) (ch & 0xff); + if (crc1 != crc) { + mDataFork = ""; + return -1; // error! + } + + // Resource fork + crc = 0; + for (j=0; j < rsrcForkLen; ++j) { + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc = UPDATE_CRC(crc, ch); + mResourceFork.append((size_t) 1, (char) ch); + } + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc1 = (DwUint16) (ch & 0xff); + ch = ctx.DecodeChar(); + if (ch == -1) { + return -1; // error! + } + crc1 <<= 8; + crc1 |= (DwUint16) (ch & 0xff); + if (crc1 != crc) { + mResourceFork = ""; + return -1; // error! + } + return 0; +} + +#endif -- cgit v1.2.3