/* streamio.c -- handles character stream I/O (c) 1998-2008 (W3C) MIT, ERCIM, Keio University See tidy.h for the copyright notice. Wrapper around Tidy input source and output sink that calls appropriate interfaces, and applies necessary char encoding transformations: to/from ISO-10646 and/or UTF-8. */ #include #include #include "streamio.h" #include "tidy-int.h" #include "lexer.h" #include "message.h" #include "utf8.h" #include "tmbstr.h" #ifdef TIDY_WIN32_MLANG_SUPPORT #include "win32tc.h" #endif /************************ ** Forward Declarations ************************/ static uint ReadCharFromStream( StreamIn* in ); static uint ReadByte( StreamIn* in ); static void UngetByte( StreamIn* in, uint byteValue ); static void PutByte( uint byteValue, StreamOut* out ); static void EncodeWin1252( uint c, StreamOut* out ); static void EncodeMacRoman( uint c, StreamOut* out ); static void EncodeIbm858( uint c, StreamOut* out ); static void EncodeLatin0( uint c, StreamOut* out ); static uint DecodeIbm850(uint c); static uint DecodeLatin0(uint c); static uint PopChar( StreamIn *in ); /****************************** ** Static (duration) Globals ******************************/ static StreamOut stderrStreamOut = { ASCII, FSM_ASCII, DEFAULT_NL_CONFIG, #ifdef TIDY_WIN32_MLANG_SUPPORT NULL, #endif FileIO, { 0, TY_(filesink_putByte) } }; static StreamOut stdoutStreamOut = { ASCII, FSM_ASCII, DEFAULT_NL_CONFIG, #ifdef TIDY_WIN32_MLANG_SUPPORT NULL, #endif FileIO, { 0, TY_(filesink_putByte) } }; StreamOut* TY_(StdErrOutput)(void) { // if ( stderrStreamOut.sink.sinkData == 0 ) // stderrStreamOut.sink.sinkData = stderr; return &stderrStreamOut; } void TY_(ReleaseStreamOut)( TidyDocImpl *doc, StreamOut* out ) { if ( out && out != &stderrStreamOut && out != &stdoutStreamOut ) { if ( out->iotype == FileIO ) fclose( (FILE*) out->sink.sinkData ); TidyDocFree( doc, out ); } } /************************ ** Source ************************/ static void InitLastPos( StreamIn *in ); StreamIn* TY_(initStreamIn)( TidyDocImpl* doc, int encoding ) { StreamIn *in = (StreamIn*) TidyDocAlloc( doc, sizeof(StreamIn) ); TidyClearMemory( in, sizeof(StreamIn) ); in->curline = 1; in->curcol = 1; in->encoding = encoding; in->state = FSM_ASCII; in->doc = doc; in->bufsize = CHARBUF_SIZE; in->allocator = doc->allocator; in->charbuf = (tchar*)TidyDocAlloc(doc, sizeof(tchar) * in->bufsize); InitLastPos( in ); #ifdef TIDY_STORE_ORIGINAL_TEXT in->otextbuf = NULL; in->otextlen = 0; in->otextsize = 0; #endif return in; } void TY_(freeStreamIn)(StreamIn* in) { #ifdef TIDY_STORE_ORIGINAL_TEXT if (in->otextbuf) TidyFree(in->allocator, in->otextbuf); #endif TidyFree(in->allocator, in->charbuf); TidyFree(in->allocator, in); } StreamIn* TY_(FileInput)( TidyDocImpl* doc, FILE *fp, int encoding ) { StreamIn *in = TY_(initStreamIn)( doc, encoding ); if ( TY_(initFileSource)( doc->allocator, &in->source, fp ) != 0 ) { TY_(freeStreamIn)( in ); return NULL; } in->iotype = FileIO; return in; } StreamIn* TY_(BufferInput)( TidyDocImpl* doc, TidyBuffer* buf, int encoding ) { StreamIn *in = TY_(initStreamIn)( doc, encoding ); tidyInitInputBuffer( &in->source, buf ); in->iotype = BufferIO; return in; } StreamIn* TY_(UserInput)( TidyDocImpl* doc, TidyInputSource* source, int encoding ) { StreamIn *in = TY_(initStreamIn)( doc, encoding ); memcpy( &in->source, source, sizeof(TidyInputSource) ); in->iotype = UserIO; return in; } int TY_(ReadBOMEncoding)(StreamIn *in) { uint c, c1; #if SUPPORT_UTF16_ENCODINGS uint bom; #endif c = ReadByte(in); if (c == EndOfStream) return -1; c1 = ReadByte( in ); if (c1 == EndOfStream) { UngetByte(in, c); return -1; } /* todo: dont warn about mismatch for auto input encoding */ /* todo: let the user override the encoding found here */ #if SUPPORT_UTF16_ENCODINGS bom = (c << 8) + c1; if ( bom == UNICODE_BOM_BE ) { /* big-endian UTF-16 */ if ( in->encoding != UTF16 && in->encoding != UTF16BE ) TY_(ReportEncodingWarning)(in->doc, ENCODING_MISMATCH, UTF16BE); return UTF16BE; /* return decoded BOM */ } else if (bom == UNICODE_BOM_LE) { /* little-endian UTF-16 */ if (in->encoding != UTF16 && in->encoding != UTF16LE) TY_(ReportEncodingWarning)(in->doc, ENCODING_MISMATCH, UTF16LE); return UTF16LE; /* return decoded BOM */ } else #endif /* SUPPORT_UTF16_ENCODINGS */ { uint c2 = ReadByte(in); if (c2 == EndOfStream) { UngetByte(in, c1); UngetByte(in, c); return -1; } if (((c << 16) + (c1 << 8) + c2) == UNICODE_BOM_UTF8) { /* UTF-8 */ if (in->encoding != UTF8) TY_(ReportEncodingWarning)(in->doc, ENCODING_MISMATCH, UTF8); return UTF8; } else UngetByte( in, c2 ); } UngetByte(in, c1); UngetByte(in, c); return -1; } #ifdef TIDY_STORE_ORIGINAL_TEXT void TY_(AddByteToOriginalText)(StreamIn *in, tmbchar c) { if (in->otextlen + 1 >= in->otextsize) { size_t size = in->otextsize ? 1 : 2; in->otextbuf = TidyRealloc(in->allocator, in->otextbuf, in->otextsize + size); in->otextsize += size; } in->otextbuf[in->otextlen++] = c; in->otextbuf[in->otextlen ] = 0; } void TY_(AddCharToOriginalText)(StreamIn *in, tchar c) { int i, err, count = 0; tmbchar buf[10] = {0}; err = TY_(EncodeCharToUTF8Bytes)(c, buf, NULL, &count); if (err) { /* replacement character 0xFFFD encoded as UTF-8 */ buf[0] = (byte) 0xEF; buf[1] = (byte) 0xBF; buf[2] = (byte) 0xBD; count = 3; } for (i = 0; i < count; ++i) TY_(AddByteToOriginalText)(in, buf[i]); } #endif static void InitLastPos( StreamIn *in ) { in->curlastpos = 0; in->firstlastpos = 0; } static void PopLastPos( StreamIn *in ) { in->curlastpos = (in->curlastpos+1)%LASTPOS_SIZE; if ( in->curlastpos == in->firstlastpos ) in->firstlastpos = (in->firstlastpos+1)%LASTPOS_SIZE; } static void SaveLastPos( StreamIn *in ) { PopLastPos( in ); in->lastcols[in->curlastpos] = in->curcol; } static void RestoreLastPos( StreamIn *in ) { if ( in->firstlastpos == in->curlastpos ) in->curcol = 0; else { in->curcol = in->lastcols[in->curlastpos]; if ( in->curlastpos == 0 ) in->curlastpos = LASTPOS_SIZE; in->curlastpos--; } } uint TY_(ReadChar)( StreamIn *in ) { uint c = EndOfStream; uint tabsize = cfg( in->doc, TidyTabSize ); #ifdef TIDY_STORE_ORIGINAL_TEXT Bool added = no; #endif if ( in->pushed ) return PopChar( in ); SaveLastPos( in ); if ( in->tabs > 0 ) { in->curcol++; in->tabs--; return ' '; } for (;;) { c = ReadCharFromStream(in); if ( EndOfStream == c ) return EndOfStream; if (c == '\n') { #ifdef TIDY_STORE_ORIGINAL_TEXT added = aye; TY_(AddCharToOriginalText)(in, (tchar)c); #endif in->curcol = 1; in->curline++; break; } if (c == '\t') { #ifdef TIDY_STORE_ORIGINAL_TEXT added = aye; TY_(AddCharToOriginalText)(in, (tchar)c); #endif in->tabs = tabsize > 0 ? tabsize - ((in->curcol - 1) % tabsize) - 1 : 0; in->curcol++; c = ' '; break; } /* #427663 - map '\r' to '\n' - Andy Quick 11 Aug 00 */ if (c == '\r') { #ifdef TIDY_STORE_ORIGINAL_TEXT added = aye; TY_(AddCharToOriginalText)(in, (tchar)c); #endif c = ReadCharFromStream(in); if (c != '\n') { TY_(UngetChar)( c, in ); c = '\n'; } else { #ifdef TIDY_STORE_ORIGINAL_TEXT TY_(AddCharToOriginalText)(in, (tchar)c); #endif } in->curcol = 1; in->curline++; break; } #ifndef NO_NATIVE_ISO2022_SUPPORT /* strip control characters, except for Esc */ if (c == '\033') break; #endif /* Form Feed is allowed in HTML */ if ( c == '\015' && !cfgBool(in->doc, TidyXmlTags) ) break; if ( c < 32 ) continue; /* discard control char */ /* watch out for chars that have already been decoded such as */ /* IS02022, UTF-8 etc, that don't require further decoding */ if ( in->encoding == RAW #ifndef NO_NATIVE_ISO2022_SUPPORT || in->encoding == ISO2022 #endif || in->encoding == UTF8 #if SUPPORT_ASIAN_ENCODINGS || in->encoding == SHIFTJIS /* #431953 - RJ */ || in->encoding == BIG5 /* #431953 - RJ */ #endif ) { in->curcol++; break; } #if SUPPORT_UTF16_ENCODINGS /* handle surrogate pairs */ if ( in->encoding == UTF16LE || in->encoding == UTF16 || in->encoding == UTF16BE ) { if ( !TY_(IsValidUTF16FromUCS4)(c) ) { /* invalid UTF-16 value */ TY_(ReportEncodingError)(in->doc, INVALID_UTF16, c, aye); c = 0; } else if ( TY_(IsLowSurrogate)(c) ) { uint n = c; uint m = ReadCharFromStream( in ); if ( m == EndOfStream ) return EndOfStream; c = 0; if ( TY_(IsHighSurrogate)(m) ) { n = TY_(CombineSurrogatePair)( m, n ); if ( TY_(IsValidCombinedChar)(n) ) c = n; } /* not a valid pair */ if ( 0 == c ) TY_(ReportEncodingError)( in->doc, INVALID_UTF16, c, aye ); } } #endif /* Do first: acts on range 128 - 255 */ switch ( in->encoding ) { case MACROMAN: c = TY_(DecodeMacRoman)( c ); break; case IBM858: c = DecodeIbm850( c ); break; case LATIN0: c = DecodeLatin0( c ); break; } /* produced e.g. as a side-effect of smart quotes in Word */ /* but can't happen if using MACROMAN encoding */ if ( 127 < c && c < 160 ) { uint c1 = 0, replMode = DISCARDED_CHAR; Bool isVendorChar = ( in->encoding == WIN1252 || in->encoding == MACROMAN ); Bool isMacChar = ( in->encoding == MACROMAN ); /* set error position just before offending character */ if (in->doc->lexer) { in->doc->lexer->lines = in->curline; in->doc->lexer->columns = in->curcol; } if ( isMacChar ) c1 = TY_(DecodeMacRoman)( c ); else c1 = TY_(DecodeWin1252)( c ); if ( c1 ) replMode = REPLACED_CHAR; if ( c1 == 0 && isVendorChar ) TY_(ReportEncodingError)(in->doc, VENDOR_SPECIFIC_CHARS, c, replMode == DISCARDED_CHAR); else if ( ! isVendorChar ) TY_(ReportEncodingError)(in->doc, INVALID_SGML_CHARS, c, replMode == DISCARDED_CHAR); c = c1; } if ( c == 0 ) continue; /* illegal char is discarded */ in->curcol++; break; } #ifdef TIDY_STORE_ORIGINAL_TEXT if (!added) TY_(AddCharToOriginalText)(in, (tchar)c); #endif return c; } static uint PopChar( StreamIn *in ) { uint c = EndOfStream; if ( in->pushed ) { assert( in->bufpos > 0 ); c = in->charbuf[ --in->bufpos ]; if ( in->bufpos == 0 ) in->pushed = no; if ( c == '\n' ) { in->curcol = 1; in->curline++; PopLastPos( in ); return c; } in->curcol++; PopLastPos( in ); } return c; } void TY_(UngetChar)( uint c, StreamIn *in ) { if (c == EndOfStream) { /* fprintf(stderr, "Attempt to UngetChar EOF\n"); */ return; } in->pushed = aye; if (in->bufpos + 1 >= in->bufsize) in->charbuf = (tchar*)TidyRealloc(in->allocator, in->charbuf, sizeof(tchar) * ++(in->bufsize)); in->charbuf[(in->bufpos)++] = c; if (c == '\n') --(in->curline); RestoreLastPos( in ); } /************************ ** Sink ************************/ static StreamOut* initStreamOut( TidyDocImpl* doc, int encoding, uint nl ) { StreamOut* out = (StreamOut*) TidyDocAlloc( doc, sizeof(StreamOut) ); TidyClearMemory( out, sizeof(StreamOut) ); out->encoding = encoding; out->state = FSM_ASCII; out->nl = nl; return out; } StreamOut* TY_(FileOutput)( TidyDocImpl *doc, FILE* fp, int encoding, uint nl ) { StreamOut* out = initStreamOut( doc, encoding, nl ); TY_(initFileSink)( &out->sink, fp ); out->iotype = FileIO; return out; } StreamOut* TY_(BufferOutput)( TidyDocImpl *doc, TidyBuffer* buf, int encoding, uint nl ) { StreamOut* out = initStreamOut( doc, encoding, nl ); tidyInitOutputBuffer( &out->sink, buf ); out->iotype = BufferIO; return out; } StreamOut* TY_(UserOutput)( TidyDocImpl *doc, TidyOutputSink* sink, int encoding, uint nl ) { StreamOut* out = initStreamOut( doc, encoding, nl ); memcpy( &out->sink, sink, sizeof(TidyOutputSink) ); out->iotype = UserIO; return out; } void TY_(WriteChar)( uint c, StreamOut* out ) { /* Translate outgoing newlines */ if ( LF == c ) { if ( out->nl == TidyCRLF ) TY_(WriteChar)( CR, out ); else if ( out->nl == TidyCR ) c = CR; } if (out->encoding == MACROMAN) { EncodeMacRoman( c, out ); } else if (out->encoding == WIN1252) { EncodeWin1252( c, out ); } else if (out->encoding == IBM858) { EncodeIbm858( c, out ); } else if (out->encoding == LATIN0) { EncodeLatin0( c, out ); } else if (out->encoding == UTF8) { int count = 0; TY_(EncodeCharToUTF8Bytes)( c, NULL, &out->sink, &count ); if (count <= 0) { /* TY_(ReportEncodingError)(in->lexer, INVALID_UTF8 | REPLACED_CHAR, c); */ /* replacement char 0xFFFD encoded as UTF-8 */ PutByte(0xEF, out); PutByte(0xBF, out); PutByte(0xBF, out); } } #ifndef NO_NATIVE_ISO2022_SUPPORT else if (out->encoding == ISO2022) { if (c == 0x1b) /* ESC */ out->state = FSM_ESC; else { switch (out->state) { case FSM_ESC: if (c == '$') out->state = FSM_ESCD; else if (c == '(') out->state = FSM_ESCP; else out->state = FSM_ASCII; break; case FSM_ESCD: if (c == '(') out->state = FSM_ESCDP; else out->state = FSM_NONASCII; break; case FSM_ESCDP: out->state = FSM_NONASCII; break; case FSM_ESCP: out->state = FSM_ASCII; break; case FSM_NONASCII: c &= 0x7F; break; case FSM_ASCII: break; } } PutByte(c, out); } #endif /* NO_NATIVE_ISO2022_SUPPORT */ #if SUPPORT_UTF16_ENCODINGS else if ( out->encoding == UTF16LE || out->encoding == UTF16BE || out->encoding == UTF16 ) { int i, numChars = 1; uint theChars[2]; if ( !TY_(IsValidUTF16FromUCS4)(c) ) { /* invalid UTF-16 value */ /* TY_(ReportEncodingError)(in->lexer, INVALID_UTF16 | DISCARDED_CHAR, c); */ c = 0; numChars = 0; } else if ( TY_(IsCombinedChar)(c) ) { /* output both, unless something goes wrong */ numChars = 2; if ( !TY_(SplitSurrogatePair)(c, &theChars[0], &theChars[1]) ) { /* TY_(ReportEncodingError)(in->lexer, INVALID_UTF16 | DISCARDED_CHAR, c); */ c = 0; numChars = 0; } } else { /* just put the char out */ theChars[0] = c; } for (i = 0; i < numChars; i++) { c = theChars[i]; if (out->encoding == UTF16LE) { uint ch = c & 0xFF; PutByte(ch, out); ch = (c >> 8) & 0xFF; PutByte(ch, out); } else if (out->encoding == UTF16BE || out->encoding == UTF16) { uint ch = (c >> 8) & 0xFF; PutByte(ch, out); ch = c & 0xFF; PutByte(ch, out); } } } #endif #if SUPPORT_ASIAN_ENCODINGS else if (out->encoding == BIG5 || out->encoding == SHIFTJIS) { if (c < 128) PutByte(c, out); else { uint ch = (c >> 8) & 0xFF; PutByte(ch, out); ch = c & 0xFF; PutByte(ch, out); } } #endif else PutByte( c, out ); } /**************************** ** Miscellaneous / Helpers ****************************/ /* Mapping for Windows Western character set CP 1252 ** (chars 128-159/U+0080-U+009F) to Unicode. */ static const uint Win2Unicode[32] = { 0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6, 0x2030, 0x0160, 0x2039, 0x0152, 0x0000, 0x017D, 0x0000, 0x0000, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x02DC, 0x2122, 0x0161, 0x203A, 0x0153, 0x0000, 0x017E, 0x0178 }; /* Function for conversion from Windows-1252 to Unicode */ uint TY_(DecodeWin1252)(uint c) { if (127 < c && c < 160) c = Win2Unicode[c - 128]; return c; } static void EncodeWin1252( uint c, StreamOut* out ) { if (c < 128 || (c > 159 && c < 256)) PutByte(c, out); else { int i; for (i = 128; i < 160; i++) if (Win2Unicode[i - 128] == c) { PutByte(i, out); break; } } } /* John Love-Jensen contributed this table for mapping MacRoman character set to Unicode */ /* modified to only need chars 128-255/U+0080-U+00FF - Terry Teague 19 Aug 01 */ static const uint Mac2Unicode[128] = { /* x7F = DEL */ 0x00C4, 0x00C5, 0x00C7, 0x00C9, 0x00D1, 0x00D6, 0x00DC, 0x00E1, 0x00E0, 0x00E2, 0x00E4, 0x00E3, 0x00E5, 0x00E7, 0x00E9, 0x00E8, 0x00EA, 0x00EB, 0x00ED, 0x00EC, 0x00EE, 0x00EF, 0x00F1, 0x00F3, 0x00F2, 0x00F4, 0x00F6, 0x00F5, 0x00FA, 0x00F9, 0x00FB, 0x00FC, 0x2020, 0x00B0, 0x00A2, 0x00A3, 0x00A7, 0x2022, 0x00B6, 0x00DF, 0x00AE, 0x00A9, 0x2122, 0x00B4, 0x00A8, 0x2260, 0x00C6, 0x00D8, 0x221E, 0x00B1, 0x2264, 0x2265, 0x00A5, 0x00B5, 0x2202, 0x2211, /* =BD U+2126 OHM SIGN */ 0x220F, 0x03C0, 0x222B, 0x00AA, 0x00BA, 0x03A9, 0x00E6, 0x00F8, 0x00BF, 0x00A1, 0x00AC, 0x221A, 0x0192, 0x2248, 0x2206, 0x00AB, 0x00BB, 0x2026, 0x00A0, 0x00C0, 0x00C3, 0x00D5, 0x0152, 0x0153, 0x2013, 0x2014, 0x201C, 0x201D, 0x2018, 0x2019, 0x00F7, 0x25CA, /* =DB U+00A4 CURRENCY SIGN */ 0x00FF, 0x0178, 0x2044, 0x20AC, 0x2039, 0x203A, 0xFB01, 0xFB02, 0x2021, 0x00B7, 0x201A, 0x201E, 0x2030, 0x00C2, 0x00CA, 0x00C1, 0x00CB, 0x00C8, 0x00CD, 0x00CE, 0x00CF, 0x00CC, 0x00D3, 0x00D4, /* xF0 = Apple Logo */ /* =F0 U+2665 BLACK HEART SUIT */ 0xF8FF, 0x00D2, 0x00DA, 0x00DB, 0x00D9, 0x0131, 0x02C6, 0x02DC, 0x00AF, 0x02D8, 0x02D9, 0x02DA, 0x00B8, 0x02DD, 0x02DB, 0x02C7 }; /* Function to convert from MacRoman to Unicode */ uint TY_(DecodeMacRoman)(uint c) { if (127 < c) c = Mac2Unicode[c - 128]; return c; } static void EncodeMacRoman( uint c, StreamOut* out ) { if (c < 128) PutByte(c, out); else { /* For mac users, map Unicode back to MacRoman. */ int i; for (i = 128; i < 256; i++) { if (Mac2Unicode[i - 128] == c) { PutByte(i, out); break; } } } } /* Mapping for OS/2 Western character set CP 850 ** (chars 128-255) to Unicode. */ static const uint IBM2Unicode[128] = { 0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7, 0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5, 0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9, 0x00FF, 0x00D6, 0x00DC, 0x00F8, 0x00A3, 0x00D8, 0x00D7, 0x0192, 0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA, 0x00BF, 0x00AE, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB, 0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x00C1, 0x00C2, 0x00C0, 0x00A9, 0x2563, 0x2551, 0x2557, 0x255D, 0x00A2, 0x00A5, 0x2510, 0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x00E3, 0x00C3, 0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x00a4, 0x00f0, 0x00d0, 0x00ca, 0x00cb, 0x00c8, 0x20AC, 0x00cd, 0x00ce, 0x00cf, 0x2518, 0x250c, 0x2588, 0x2584, 0x00a6, 0x00cc, 0x2580, 0x00d3, 0x00df, 0x00d4, 0x00d2, 0x00f5, 0x00d5, 0x00b5, 0x00fe, 0x00de, 0x00da, 0x00db, 0x00d9, 0x00fd, 0x00dd, 0x00af, 0x00b4, 0x00ad, 0x00b1, 0x2017, 0x00be, 0x00b6, 0x00a7, 0x00f7, 0x00b8, 0x00b0, 0x00a8, 0x00b7, 0x00b9, 0x00b3, 0x00b2, 0x25a0, 0x00a0 }; /* Function for conversion from OS/2-850 to Unicode */ static uint DecodeIbm850(uint c) { if (127 < c && c < 256) c = IBM2Unicode[c - 128]; return c; } /* For OS/2,Java users, map Unicode back to IBM858 (IBM850+Euro). */ static void EncodeIbm858( uint c, StreamOut* out ) { if (c < 128) PutByte(c, out); else { int i; for (i = 128; i < 256; i++) { if (IBM2Unicode[i - 128] == c) { PutByte(i, out); break; } } } } /* Convert from Latin0 (aka Latin9, ISO-8859-15) to Unicode */ static uint DecodeLatin0(uint c) { if (159 < c && c < 191) { switch (c) { case 0xA4: c = 0x20AC; break; case 0xA6: c = 0x0160; break; case 0xA8: c = 0x0161; break; case 0xB4: c = 0x017D; break; case 0xB8: c = 0x017E; break; case 0xBC: c = 0x0152; break; case 0xBD: c = 0x0153; break; case 0xBE: c = 0x0178; break; } } return c; } /* Map Unicode back to ISO-8859-15. */ static void EncodeLatin0( uint c, StreamOut* out ) { switch (c) { case 0x20AC: c = 0xA4; break; case 0x0160: c = 0xA6; break; case 0x0161: c = 0xA8; break; case 0x017D: c = 0xB4; break; case 0x017E: c = 0xB8; break; case 0x0152: c = 0xBC; break; case 0x0153: c = 0xBD; break; case 0x0178: c = 0xBE; break; } PutByte(c, out); } #if 0 /* 000000000000000000000000000000000000000 */ /* Table to map symbol font characters to Unicode; undefined characters are mapped to 0x0000 and characters without any Unicode equivalent are mapped to '?'. Is this appropriate? */ static const uint Symbol2Unicode[] = { 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F, 0x0020, 0x0021, 0x2200, 0x0023, 0x2203, 0x0025, 0x0026, 0x220D, 0x0028, 0x0029, 0x2217, 0x002B, 0x002C, 0x2212, 0x002E, 0x002F, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F, 0x2245, 0x0391, 0x0392, 0x03A7, 0x0394, 0x0395, 0x03A6, 0x0393, 0x0397, 0x0399, 0x03D1, 0x039A, 0x039B, 0x039C, 0x039D, 0x039F, 0x03A0, 0x0398, 0x03A1, 0x03A3, 0x03A4, 0x03A5, 0x03C2, 0x03A9, 0x039E, 0x03A8, 0x0396, 0x005B, 0x2234, 0x005D, 0x22A5, 0x005F, 0x00AF, 0x03B1, 0x03B2, 0x03C7, 0x03B4, 0x03B5, 0x03C6, 0x03B3, 0x03B7, 0x03B9, 0x03D5, 0x03BA, 0x03BB, 0x03BC, 0x03BD, 0x03BF, 0x03C0, 0x03B8, 0x03C1, 0x03C3, 0x03C4, 0x03C5, 0x03D6, 0x03C9, 0x03BE, 0x03C8, 0x03B6, 0x007B, 0x007C, 0x007D, 0x223C, 0x003F, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x03D2, 0x2032, 0x2264, 0x2044, 0x221E, 0x0192, 0x2663, 0x2666, 0x2665, 0x2660, 0x2194, 0x2190, 0x2191, 0x2192, 0x2193, 0x00B0, 0x00B1, 0x2033, 0x2265, 0x00D7, 0x221D, 0x2202, 0x00B7, 0x00F7, 0x2260, 0x2261, 0x2248, 0x2026, 0x003F, 0x003F, 0x21B5, 0x2135, 0x2111, 0x211C, 0x2118, 0x2297, 0x2295, 0x2205, 0x2229, 0x222A, 0x2283, 0x2287, 0x2284, 0x2282, 0x2286, 0x2208, 0x2209, 0x2220, 0x2207, 0x00AE, 0x00A9, 0x2122, 0x220F, 0x221A, 0x22C5, 0x00AC, 0x2227, 0x2228, 0x21D4, 0x21D0, 0x21D1, 0x21D2, 0x21D3, 0x25CA, 0x2329, 0x00AE, 0x00A9, 0x2122, 0x2211, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x20AC, 0x232A, 0x222B, 0x2320, 0x003F, 0x2321, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F, 0x003F }; /* Function to convert from Symbol Font chars to Unicode */ uint DecodeSymbolFont(uint c) { if (c > 255) return c; /* todo: add some error message */ return Symbol2Unicode[c]; } #endif /* #if 0 000000000000000000000000000000000000000 */ /* Facilitates user defined source by providing ** an entry point to marshal pointers-to-functions. ** Needed by .NET and possibly other language bindings. */ Bool TIDY_CALL tidyInitSource( TidyInputSource* source, void* srcData, TidyGetByteFunc gbFunc, TidyUngetByteFunc ugbFunc, TidyEOFFunc endFunc ) { Bool status = ( source && srcData && gbFunc && ugbFunc && endFunc ); if ( status ) { source->sourceData = srcData; source->getByte = gbFunc; source->ungetByte = ugbFunc; source->eof = endFunc; } return status; } Bool TIDY_CALL tidyInitSink( TidyOutputSink* sink, void* snkData, TidyPutByteFunc pbFunc ) { Bool status = ( sink && snkData && pbFunc ); if ( status ) { sink->sinkData = snkData; sink->putByte = pbFunc; } return status; } /* GetByte must return a byte value in a signed ** integer so that a negative value can signal EOF ** without interfering w/ 0-255 legitimate byte values. */ uint TIDY_CALL tidyGetByte( TidyInputSource* source ) { int bv = source->getByte( source->sourceData ); return (uint) bv; } Bool TIDY_CALL tidyIsEOF( TidyInputSource* source ) { return source->eof( source->sourceData ); } void TIDY_CALL tidyUngetByte( TidyInputSource* source, uint ch ) { source->ungetByte( source->sourceData, (byte) ch ); } void TIDY_CALL tidyPutByte( TidyOutputSink* sink, uint ch ) { sink->putByte( sink->sinkData, (byte) ch ); } static uint ReadByte( StreamIn* in ) { return tidyGetByte( &in->source ); } Bool TY_(IsEOF)( StreamIn* in ) { return tidyIsEOF( &in->source ); } static void UngetByte( StreamIn* in, uint byteValue ) { tidyUngetByte( &in->source, byteValue ); } static void PutByte( uint byteValue, StreamOut* out ) { tidyPutByte( &out->sink, byteValue ); } #if 0 static void UngetRawBytesToStream( StreamIn *in, byte* buf, int *count ) { int i; for (i = 0; i < *count; i++) { /* should never get here; testing for 0xFF, a valid char, is not a good idea */ if ( in && TY_(IsEOF)(in) ) { /* fprintf(stderr,"Attempt to unget EOF in UngetRawBytesToStream\n"); */ *count = -i; return; } in->source.ungetByte( in->source.sourceData, buf[i] ); } } /* Read raw bytes from stream, return <= 0 if EOF; or if "unget" is true, Unget the bytes to re-synchronize the input stream Normally UTF-8 successor bytes are read using this routine. */ static void ReadRawBytesFromStream( StreamIn *in, byte* buf, int *count ) { int ix; for ( ix=0; ix < *count; ++ix ) { if ( in->rawPushed ) { buf[ix] = in->rawBytebuf[ --in->rawBufpos ]; if ( in->rawBufpos == 0 ) in->rawPushed = no; } else { if ( in->source.eof(in->source.sourceData) ) { *count = -i; break; } buf[ix] = in->source.getByte( in->source.sourceData ); } } } #endif /* 0 */ /* read char from stream */ static uint ReadCharFromStream( StreamIn* in ) { uint c, n; #ifdef TIDY_WIN32_MLANG_SUPPORT uint bytesRead = 0; #endif if ( TY_(IsEOF)(in) ) return EndOfStream; c = ReadByte( in ); if (c == EndOfStream) return c; #ifndef NO_NATIVE_ISO2022_SUPPORT /* A document in ISO-2022 based encoding uses some ESC sequences called "designator" to switch character sets. The designators defined and used in ISO-2022-JP are: "ESC" + "(" + ? for ISO646 variants "ESC" + "$" + ? and "ESC" + "$" + "(" + ? for multibyte character sets Where ? stands for a single character used to indicate the character set for multibyte characters. Tidy handles this by preserving the escape sequence and setting the top bit of each byte for non-ascii chars. This bit is then cleared on output. The input stream keeps track of the state to determine when to set/clear the bit. */ if (in->encoding == ISO2022) { if (c == 0x1b) /* ESC */ { in->state = FSM_ESC; return c; } switch (in->state) { case FSM_ESC: if (c == '$') in->state = FSM_ESCD; else if (c == '(') in->state = FSM_ESCP; else in->state = FSM_ASCII; break; case FSM_ESCD: if (c == '(') in->state = FSM_ESCDP; else in->state = FSM_NONASCII; break; case FSM_ESCDP: in->state = FSM_NONASCII; break; case FSM_ESCP: in->state = FSM_ASCII; break; case FSM_NONASCII: c |= 0x80; break; case FSM_ASCII: break; } return c; } #endif /* #ifndef NO_NATIVE_ISO2022_SUPPORT */ #if SUPPORT_UTF16_ENCODINGS if ( in->encoding == UTF16LE ) { uint c1 = ReadByte( in ); if ( EndOfStream == c1 ) return EndOfStream; n = (c1 << 8) + c; return n; } if ((in->encoding == UTF16) || (in->encoding == UTF16BE)) /* UTF-16 is big-endian by default */ { uint c1 = ReadByte( in ); if ( EndOfStream == c1 ) return EndOfStream; n = (c << 8) + c1; return n; } #endif if ( in->encoding == UTF8 ) { /* deal with UTF-8 encoded char */ int err, count = 0; /* first byte "c" is passed in separately */ err = TY_(DecodeUTF8BytesToChar)( &n, c, NULL, &in->source, &count ); if (!err && (n == (uint)EndOfStream) && (count == 1)) /* EOF */ return EndOfStream; else if (err) { /* set error position just before offending character */ in->doc->lexer->lines = in->curline; in->doc->lexer->columns = in->curcol; TY_(ReportEncodingError)(in->doc, INVALID_UTF8, n, no); n = 0xFFFD; /* replacement char */ } return n; } #if SUPPORT_ASIAN_ENCODINGS /* This section is suitable for any "multibyte" variable-width character encoding in which a one-byte code is less than 128, and the first byte of a two-byte code is greater or equal to 128. Note that Big5 and ShiftJIS fit into this kind, even though their second byte may be less than 128 */ if ((in->encoding == BIG5) || (in->encoding == SHIFTJIS)) { if (c < 128) return c; else if ((in->encoding == SHIFTJIS) && (c >= 0xa1 && c <= 0xdf)) /* 461643 - fix suggested by Rick Cameron 14 Sep 01 */ { /* Rick Cameron pointed out that for Shift_JIS, the values from 0xa1 through 0xdf represent singe-byte characters (U+FF61 to U+FF9F - half-shift Katakana) */ return c; } else { uint c1 = ReadByte( in ); if ( EndOfStream == c1 ) return EndOfStream; n = (c << 8) + c1; return n; } } #endif #ifdef TIDY_WIN32_MLANG_SUPPORT else if (in->encoding > WIN32MLANG) { assert( in->mlang != NULL ); return TY_(Win32MLangGetChar)((byte)c, in, &bytesRead); } #endif else n = c; return n; } /* Output a Byte Order Mark if required */ void TY_(outBOM)( StreamOut *out ) { if ( out->encoding == UTF8 #if SUPPORT_UTF16_ENCODINGS || out->encoding == UTF16LE || out->encoding == UTF16BE || out->encoding == UTF16 #endif ) { /* this will take care of encoding the BOM correctly */ TY_(WriteChar)( UNICODE_BOM, out ); } } /* this is in intermediate fix for various problems in the */ /* long term code and data in charsets.c should be used */ static struct _enc2iana { uint id; ctmbstr name; ctmbstr tidyOptName; } const enc2iana[] = { { ASCII, "us-ascii", "ascii" }, { LATIN0, "iso-8859-15", "latin0" }, { LATIN1, "iso-8859-1", "latin1" }, { UTF8, "utf-8", "utf8" }, { MACROMAN, "macintosh", "mac" }, { WIN1252, "windows-1252", "win1252" }, { IBM858, "ibm00858", "ibm858" }, #if SUPPORT_UTF16_ENCODINGS { UTF16LE, "utf-16", "utf16le" }, { UTF16BE, "utf-16", "utf16be" }, { UTF16, "utf-16", "utf16" }, #endif #if SUPPORT_ASIAN_ENCODINGS { BIG5, "big5", "big5" }, { SHIFTJIS, "shift_jis", "shiftjis"}, #endif #ifndef NO_NATIVE_ISO2022_SUPPORT { ISO2022, NULL, "iso2022" }, #endif { RAW, NULL, "raw" } }; ctmbstr TY_(GetEncodingNameFromTidyId)(uint id) { uint i; for (i = 0; enc2iana[i].name; ++i) if (enc2iana[i].id == id) return enc2iana[i].name; return NULL; } ctmbstr TY_(GetEncodingOptNameFromTidyId)(uint id) { uint i; for (i = 0; i < sizeof(enc2iana)/sizeof(enc2iana[0]); ++i) if (enc2iana[i].id == id) return enc2iana[i].tidyOptName; return NULL; } int TY_(GetCharEncodingFromOptName)( ctmbstr charenc ) { uint i; for (i = 0; i < sizeof(enc2iana)/sizeof(enc2iana[0]); ++i) if (TY_(tmbstrcasecmp)(charenc, enc2iana[i].tidyOptName) == 0 ) return enc2iana[i].id; return -1; } /* * local variables: * mode: c * indent-tabs-mode: nil * c-basic-offset: 4 * eval: (c-set-offset 'substatement-open 0) * end: */