--- parser3/src/main/pa_charset.C 2001/12/17 19:22:21 1.5 +++ parser3/src/main/pa_charset.C 2024/12/11 21:57:35 1.115 @@ -1,30 +1,43 @@ /** @file Parser: Charset connection implementation. - Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) - Author: Alexander Petrosyan(http://paf.design.ru) - - $Id: pa_charset.C,v 1.5 2001/12/17 19:22:21 paf Exp $ + Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com) + Authors: Konstantin Morshnev , Alexandr Petrosian */ #include "pa_charset.h" -//#include "pa_exception.h" -//#include "pa_common.h" -//#include "pa_threads.h" +#include "pa_charsets.h" + +// we are using some pcre_internal.h stuff as well +#include "../lib/pcre/pa_pcre_internal.h" + +volatile const char * IDENT_PA_CHARSET_C="$Id: pa_charset.C,v 1.115 2024/12/11 21:57:35 moko Exp $" IDENT_PA_CHARSET_H; #ifdef XML -# include -# include -# include -# include +#include "libxml/xmlmemory.h" +#include "libxml/encoding.h" #endif -// globals +//#define PA_PATCHED_LIBXML_BACKWARD +// reduce memory usage by pre-calculation utf-8 string length +#define PRECALCULATE_DEST_LENGTH -// consts +// globals -#define MAX_CHARSET_UNI_CODES 500 +Charset::UTF8CaseTable::Rec UTF8CaseToUpperRecords[]={ +#include "utf8-to-upper.inc" +}; +Charset::UTF8CaseTable UTF8CaseToUpper={ + sizeof(UTF8CaseToUpperRecords)/sizeof(Charset::UTF8CaseTable::Rec), + UTF8CaseToUpperRecords}; + +Charset::UTF8CaseTable::Rec UTF8CaseToLowerRecords[]={ +#include "utf8-to-lower.inc" +}; +Charset::UTF8CaseTable UTF8CaseToLower={ + sizeof(UTF8CaseToLowerRecords)/sizeof(Charset::UTF8CaseTable::Rec), + UTF8CaseToLowerRecords}; // helpers @@ -32,10 +45,9 @@ inline void prepare_case_tables(unsigned unsigned char *lcc_table=tables+lcc_offset; unsigned char *fcc_table=tables+fcc_offset; for(int i=0; i<0x100; i++) - lcc_table[i]=fcc_table[i]=i; + lcc_table[i]=fcc_table[i]=(unsigned char)i; } -inline void cstr2ctypes(unsigned char *tables, const unsigned char *cstr, - unsigned char bit) { +inline void cstr2ctypes(unsigned char *tables, const unsigned char *cstr, unsigned char bit) { unsigned char *ctypes_table=tables+ctypes_offset; ctypes_table[0]=bit; for(; *cstr; cstr++) { @@ -43,20 +55,18 @@ inline void cstr2ctypes(unsigned char *t ctypes_table[c]|=bit; } } -inline unsigned int to_wchar_code(const char *cstr) { +inline unsigned int to_wchar_code(const char* cstr) { if(!cstr || !*cstr) return 0; if(cstr[1]==0) return(unsigned int)(unsigned char)cstr[0]; - char *error_pos; - return(unsigned int)strtol(cstr, &error_pos, 0); + return pa_atoui(cstr,0); } -inline bool to_bool(const char *cstr) { +inline bool to_bool(const char* cstr) { return cstr && *cstr!=0; } -static void element2ctypes(unsigned char c, bool belongs, - unsigned char *tables, unsigned char bit, int group_offset=-1) { +static void element2ctypes(unsigned char c, bool belongs, unsigned char *tables, unsigned char bit, int group_offset=-1) { if(!belongs) return; @@ -66,8 +76,7 @@ static void element2ctypes(unsigned char if(group_offset>=0) tables[cbits_offset+group_offset+c/8] |= 1<<(c%8); } -static void element2case(unsigned char from, unsigned char to, - unsigned char *tables) { +static void element2case(unsigned char from, unsigned char to, unsigned char *tables) { if(!to) return; @@ -77,97 +86,52 @@ static void element2case(unsigned char f fcc_table[from]=to; fcc_table[to]=from; } -#ifdef XML -template class ENameMapFor2 : public ENameMap { -public: - // ----------------------------------------------------------------------- - // Constructors and Destructor - // ----------------------------------------------------------------------- - ENameMapFor2( - const XMLCh* const encodingName - , const XMLCh* const fromTable - , const XMLTransService::TransRec* const toTable - , const unsigned int toTableSize - ): ENameMap(encodingName), - ffromTable(fromTable), - ftoTable(toTable), - ftoTableSize(toTableSize) {} - - // ----------------------------------------------------------------------- - // Implementation of virtual factory method - // ----------------------------------------------------------------------- - virtual XMLTranscoder* makeNew(const unsigned int blockSize) const { - return new TType( - getKey(), - blockSize, - ffromTable, - ftoTable, ftoTableSize); - } -private: - const XMLCh* const ffromTable; - const XMLTransService::TransRec* const ftoTable; - const unsigned int ftoTableSize; - -private: - // ----------------------------------------------------------------------- - // Unimplemented constructors and operators - // ----------------------------------------------------------------------- - ENameMapFor2(); - ENameMapFor2(const ENameMapFor2&); - void operator=(const ENameMapFor2&); -}; +inline XMLByte *append_hex_8(XMLByte *dest, unsigned char c, const char* prefix=0) { + if(prefix) { + strcpy((char *)dest, prefix); + dest+=strlen(prefix); + } + *dest++=hex_digits[c >> 4]; + *dest++=hex_digits[c & 0x0F]; + return dest; +} -class XML256TableTranscoder2 : public XML256TableTranscoder { -public : - XML256TableTranscoder2( - const XMLCh* const encodingName - , const unsigned int blockSize - , const XMLCh* const fromTable - , const XMLTransService::TransRec* const toTable - , const unsigned int toTableSize - ) : XML256TableTranscoder(encodingName, blockSize, fromTable, toTable, toTableSize) {} - -private: - XML256TableTranscoder2(); - XML256TableTranscoder2(const XML256TableTranscoder2&); - void operator=(const XML256TableTranscoder2&); -}; -#endif +inline XMLByte *append_hex_16(XMLByte *dest, unsigned int c, const char* prefix=0) { + if(prefix) { + strcpy((char *)dest, prefix); + dest+=strlen(prefix); + } + *dest++=hex_digits[(c >> 12) & 0x0F]; + *dest++=hex_digits[(c >> 8) & 0x0F]; + *dest++=hex_digits[(c >> 4) & 0x0F]; + *dest++=hex_digits[(c) & 0x0F]; + return dest; +} // methods -extern "C" unsigned char pcre_default_tables[]; // pcre/chartables.c -Charset::Charset(Pool& apool, const String& aname, const String *file_spec): Pooled(apool), - fname(apool) { - // fname - char *name_cstr=(char *)malloc(aname.size()+1); - memcpy(name_cstr, aname.cstr(String::UL_AS_IS), aname.size()+1); - fname.APPEND_CLEAN(name_cstr, aname.size(), 0, 0); +Charset::Charset(Request_charsets* acharsets, const String::Body ANAME, const String* afile_spec): + FNAME(ANAME), + FNAME_CSTR(ANAME.cstrm()) { - if(file_spec) { + if(afile_spec) { fisUTF8=false; - loadDefinition(*file_spec); + load_definition(*acharsets, *afile_spec); #ifdef XML - addEncoding(name_cstr); + addEncoding(FNAME_CSTR); #endif } else { fisUTF8=true; // grab default onces [for UTF-8 so to be able to make a-z =>A-Z - memcpy(pcre_tables, pcre_default_tables, sizeof(pcre_tables)); + memcpy(pcre_tables, pa_pcre_default_tables, sizeof(pcre_tables)); } #ifdef XML - initTranscoder(&aname, name_cstr); -#endif -} - -Charset::~Charset() { -#ifdef XML - delete transcoder; + initTranscoder(FNAME, FNAME_CSTR); #endif } -void Charset::loadDefinition(const String& file_spec) { +void Charset::load_definition(Request_charsets& acharsets, const String& afile_spec) { // pcre_tables // lowcase, flipcase, bits digit+word+whitespace, masks @@ -178,163 +142,111 @@ void Charset::loadDefinition(const Strin cstr2ctypes(pcre_tables,(const unsigned char *)"*+?{^.$|()[", ctype_meta); // charset - memset(fromTable, 0, sizeof(fromTable)); - toTable=(Charset_TransRec *)calloc(sizeof(Charset_TransRec)*MAX_CHARSET_UNI_CODES); - toTableSize=0; - // strangly vital - toTable[toTableSize].intCh=0; - toTable[toTableSize].extCh=(XMLByte)0; - toTableSize++; + memset(&tables, 0, sizeof(tables)); // loading text - char *data=file_read_text(pool(), file_spec); + char *data=file_read_text(acharsets, afile_spec); // ignore header getrow(&data); // parse cells char *row; - while(row=getrow(&data)) { + while((row=getrow(&data))) { // remove empty&comment lines if(!*row || *row=='#') continue; // char white-space digit hex-digit letter word lowercase unicode1 unicode2 - unsigned int c=0; + unsigned char c=0; char *cell; - for(int column=0; cell=lsplit(&row, '\t'); column++) { + for(int column=0; (cell=lsplit(&row, '\t')); column++) { switch(column) { - case 0: c=to_wchar_code(cell); break; + case 0: c=(unsigned char)to_wchar_code(cell); break; // pcre_tables case 1: element2ctypes(c, to_bool(cell), pcre_tables, ctype_space, cbit_space); break; case 2: element2ctypes(c, to_bool(cell), pcre_tables, ctype_digit, cbit_digit); break; case 3: element2ctypes(c, to_bool(cell), pcre_tables, ctype_xdigit); break; case 4: element2ctypes(c, to_bool(cell), pcre_tables, ctype_letter); break; case 5: element2ctypes(c, to_bool(cell), pcre_tables, ctype_word, cbit_word); break; - case 6: element2case(c, to_wchar_code(cell), pcre_tables); break; + case 6: element2case(c, (unsigned char)to_wchar_code(cell), pcre_tables); break; case 7: case 8: // charset - if(toTableSize>MAX_CHARSET_UNI_CODES) - throw Exception(0, 0, - &file_spec, - "charset must contain not more then %d unicode values", MAX_CHARSET_UNI_CODES); + if(tables.toTableSize>MAX_CHARSET_UNI_CODES) + throw Exception(PARSER_RUNTIME, &afile_spec, "charset must contain not more than %d unicode values", MAX_CHARSET_UNI_CODES); XMLCh unicode=(XMLCh)to_wchar_code(cell); if(!unicode && column==7/*unicode1 column*/) unicode=(XMLCh)c; if(unicode) { - if(!fromTable[c]) - fromTable[c]=unicode; - toTable[toTableSize].intCh=unicode; - toTable[toTableSize].extCh=(XMLByte)c; - toTableSize++; + if(!tables.fromTable[c]) + tables.fromTable[c]=unicode; + tables.toTable[tables.toTableSize].intCh=unicode; + tables.toTable[tables.toTableSize].extCh=(XMLByte)c; + tables.toTableSize++; } break; } } }; + // parser charset tables declare only white-space before 0x20, thus adding the missing chars + for(uint i=0; i<0x20; i++) + if(!tables.fromTable[i]){ + tables.fromTable[i]=i; + tables.toTable[tables.toTableSize].intCh=i; + tables.toTable[tables.toTableSize].extCh=(XMLByte)i; + tables.toTableSize++; + } + // sort by the Unicode code point sort_ToTable(); } -#ifdef XML -void Charset::addEncoding(const char *name_cstr) { - // addEncoding - XalanDOMString sencoding(name_cstr); - const XMLCh* const auto_encoding_cstr=sencoding.c_str(); - int size=sizeof(XMLCh)*(sencoding.size()+1); - XMLCh* pool_encoding_cstr=(XMLCh*)malloc(size); - memcpy(pool_encoding_cstr, auto_encoding_cstr, size); - XMLString::upperCase(pool_encoding_cstr); - - XMLPlatformUtils::fgTransService->addEncoding( - pool_encoding_cstr, - new ENameMapFor2( - pool_encoding_cstr - , fromTable - , toTable - , toTableSize - )); -} - -void Charset::initTranscoder(const String *source, const char *name_cstr) { - XMLTransService::Codes resValue; - transcoder=XMLPlatformUtils::fgTransService->makeNewTranscoderFor(name_cstr, resValue, 60); - if(!transcoder) - throw Exception(0, 0, - source, - "unsupported encoding"); -} -#endif - static int sort_cmp_Trans_rec_intCh(const void *a, const void *b) { return - static_cast(a)->intCh- - static_cast(b)->intCh; + static_cast(a)->intCh- + static_cast(b)->intCh; } void Charset::sort_ToTable() { - _qsort(toTable, toTableSize, sizeof(*toTable), - sort_cmp_Trans_rec_intCh); - //FILE *f=fopen("c:\\temp\\a", "wb"); - //fwrite(toTable, toTableSize, sizeof(*toTable), f); - //fclose(f); -} - -XMLByte Charset::xlatOneTo(const XMLCh toXlat) const { - unsigned int lowOfs = 0; - unsigned int hiOfs = toTableSize - 1; - XMLByte curByte = 0; - do { - // Calc the mid point of the low and high offset. - const unsigned int midOfs =((hiOfs - lowOfs) / 2)+lowOfs; - - // If our test char is greater than the mid point char, then - // we move up to the upper half. Else we move to the lower - // half. If its equal, then its our guy. - if(toXlat>toTable[midOfs].intCh) - lowOfs = midOfs; - else if(toXlatcur) + lo = i+1; + else + hi = i-1; } + + return not_found; +} + +String::C Charset::transcode(const String::C src, const Charset& source_charset, const Charset& dest_charset) { + if(!src.length) + return String::C("", 0); switch((source_charset.isUTF8()?0x10:0x00)|(dest_charset.isUTF8()?0x01:0x00)) { default: // 0x00 - source_charset.transcodeToCharset(pool, dest_charset, - source_body, source_content_length, - dest_body, dest_content_length); - break; + return source_charset.transcodeToCharset(src, dest_charset); case 0x01: - source_charset.transcodeToUTF8(pool, - source_body, source_content_length, - dest_body, dest_content_length); - break; + return source_charset.transcodeToUTF8(src); case 0x10: - dest_charset.transcodeFromUTF8(pool, - source_body, source_content_length, - dest_body, dest_content_length); - break; + return dest_charset.transcodeFromUTF8(src); case 0x11: - dest_body=source_body; - dest_content_length=source_content_length; - break; + return src; } } @@ -372,226 +284,997 @@ static const XMLByte gUTFBytes[0x100] = }; static const uint gUTFOffsets[6] = { - 0, 0x3080, 0xE2080, 0x3C82080, 0xFA082080, 0x82082080 + 0, 0x3080, 0xE2080, 0x3C82080, 0xFA082080, 0x82082080 }; static const XMLByte gFirstByteMark[7] = { - 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC + 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC }; -/// @todo not so memory-hungry with prescan -void Charset::transcodeToUTF8(Pool& pool, - const void *source_body, size_t source_content_length, - const void *& adest_body, size_t& adest_content_length) const { - - size_t dest_content_length=0; - XMLByte *dest_body=(XMLByte*)pool.malloc(source_content_length*6/*so that surly enough*/); - - const XMLByte* srcPtr=(const XMLByte*)source_body; - const XMLByte* srcEnd=(const XMLByte*)source_body+source_content_length; - XMLByte* outPtr=dest_body; +static int transcodeToUTF8(const XMLByte* srcData, int& srcLen, XMLByte *toFill, int& toFillLen, const Charset::Tables& tables) { + const XMLByte* srcPtr=srcData; + const XMLByte* srcEnd=srcData+srcLen; + XMLByte* outPtr=toFill; + XMLByte* outEnd=toFill+toFillLen; - while(srcPtr>= 6; - case 5: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); - curVal>>= 6; - case 4: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); - curVal>>= 6; - case 3: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); - curVal>>= 6; - case 2: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); - curVal>>= 6; - case 1: *--outPtr = XMLByte(curVal | gFirstByteMark[encodedBytes]); - } + // use the replacement character + *outPtr++= '?'; + srcPtr++; + continue; + } - // Add the encoded bytes back in again to indicate we've eaten them - outPtr+= encodedBytes; - } + // Figure out how many bytes we need + unsigned int encodedBytes; + if(curVal<0x80) + encodedBytes = 1; + else if(curVal<0x800) + encodedBytes = 2; + else if(curVal<0x10000) + encodedBytes = 3; + else if(curVal<0x200000) + encodedBytes = 4; + else if(curVal<0x4000000) + encodedBytes = 5; + else if(curVal<= 0x7FFFFFFF) + encodedBytes = 6; + else { + // use the replacement character + *outPtr++= '?'; + srcPtr++; + continue; + } + + // If we cannot fully get this char into the output buffer + if (outPtr + encodedBytes > outEnd) + break; + + // We can do it, so update the source index + srcPtr++; + + // And spit out the bytes. We spit them out in reverse order + // here, so bump up the output pointer and work down as we go. + outPtr+= encodedBytes; + switch(encodedBytes) { + case 6: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); + curVal>>= 6; + case 5: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); + curVal>>= 6; + case 4: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); + curVal>>= 6; + case 3: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); + curVal>>= 6; + case 2: *--outPtr = XMLByte((curVal | 0x80UL) & 0xBFUL); + curVal>>= 6; + case 1: *--outPtr = XMLByte(curVal | gFirstByteMark[encodedBytes]); + } + + // Add the encoded bytes back in again to indicate we've eaten them + outPtr+= encodedBytes; + } + + // Update the bytes eaten + srcLen = srcPtr - srcData; + + // Return the characters read + toFillLen = outPtr - toFill; + + //return srcPtr==srcEnd?(int)toFillLen:-1; +/* +xmlCharEncodingInputFunc +Returns : +the number of byte written, or -1 by lack of space, or -2 if the transcoding failed. The value of inlen after return is the +number of octets consumed as the return value is positive, else unpredictiable. The value of outlen after return is the number +of ocetes consumed. +*/ + return 0; +} +/// @todo digital entites only when xml/html output [at output in html/xml mode, in html part of a letter] +static int transcodeFromUTF8(const XMLByte* srcData, int& srcLen, XMLByte* toFill, int& toFillLen, const Charset::Tables& tables) { + const XMLByte* srcPtr=srcData; + const XMLByte* srcEnd=srcData+srcLen; + XMLByte* outPtr=toFill; + XMLByte* outEnd=toFill+toFillLen; + + // We now loop until we either run out of input data, or room to store + while ((srcPtr < srcEnd) && (outPtr < outEnd)) { + // Get the next leading byte out + const XMLByte firstByte =* srcPtr; + + // Special-case ASCII, which is a leading byte value of<= 127 + if(firstByte<=127) { + *outPtr++= firstByte; + srcPtr++; + continue; + } + + // See how many trailing src bytes this sequence is going to require + const unsigned int trailingBytes = gUTFBytes[firstByte]; + + // If there are not enough source bytes to do this one, then we + // are done. Note that we done>= here because we are implicitly + // counting the 1 byte we get no matter what. + if(srcPtr+trailingBytes>= srcEnd) + break; + + // Looks ok, so lets build up the value + uint tmpVal=0; + switch(trailingBytes) { + case 5: tmpVal+=*srcPtr++; tmpVal<<=6; + case 4: tmpVal+=*srcPtr++; tmpVal<<=6; + case 3: tmpVal+=*srcPtr++; tmpVal<<=6; + case 2: tmpVal+=*srcPtr++; tmpVal<<=6; + case 1: tmpVal+=*srcPtr++; tmpVal<<=6; + case 0: tmpVal+=*srcPtr++; + break; + + default: + throw Exception(0, 0, "transcodeFromUTF8 error: wrong trailingBytes value(%d)", trailingBytes); // never + } + tmpVal-=gUTFOffsets[trailingBytes]; + + // If it will fit into a single char, then put it in. Otherwise + // fail [*encode it as a surrogate pair. If its not valid, use the + // replacement char.*] + if(!(tmpVal & 0xFFFF0000)) { + if(XMLByte xlat=xlatOneTo(tmpVal, tables, 0)) + *outPtr++=xlat; + else { + outPtr+=sprintf((char *)outPtr, "&#%u;", tmpVal); // &#decimal; + } + } else { + const XMLByte* recoverPtr=srcPtr-trailingBytes-1; + for(uint i=0; i<=trailingBytes; i++) + outPtr+=sprintf((char*)outPtr, "%%%02X", *recoverPtr++); + } + } + + // Update the bytes eaten + srcLen = srcPtr - srcData; + + // Return the characters read + toFillLen = outPtr - toFill; + + //return srcPtr==srcEnd?(int)toFillLen:-1; +/* +xmlCharEncodingOutputFunc +Returns : +the number of byte written, or -1 by lack of space, or -2 if the transcoding failed. The value of inlen after return is the +number of octets consumed as the return value is positive, else unpredictiable. The value of outlen after return is the number +of ocetes consumed. +*/ + return 0; +} + +static bool need_escape(XMLByte c){ + return + !( + (c<=127) + && ( + pa_isalnum((unsigned char)c) + || strchr("*@-_+./", c)!=0 + ) + ); +} + +// read one UTF8 char and return length of this char (in bytes) +static unsigned int readUTF8Char(const XMLByte*& srcPtr, const XMLByte* srcEnd, XMLByte& firstByte, XMLCh& UTF8Char){ + if(!srcPtr || !*srcPtr || srcPtr>=srcEnd) + return 0; + + firstByte=*srcPtr; + + if(firstByte<=127){ + UTF8Char=firstByte; + srcPtr++; + return 1; + } - // return - adest_body=dest_body; - adest_content_length=outPtr-dest_body; -} -void Charset::transcodeFromUTF8(Pool& pool, - const void *source_body, size_t source_content_length, - const void *& adest_body, size_t& adest_content_length) const { - size_t dest_content_length=0; - XMLByte *dest_body=(XMLByte*)pool.malloc(source_content_length/*surly enough*/); - - const XMLByte* srcPtr=(const XMLByte*)source_body; - const XMLByte* srcEnd=(const XMLByte*)source_body+source_content_length; - XMLByte* outPtr=dest_body; - - // We now loop until we either run out of input data - while(srcPtr= here because we are implicitly - // counting the 1 byte we get no matter what. - if(srcPtr+trailingBytes>= srcEnd) - break; - - // Looks ok, so lets build up the value - uint tmpVal=0; - switch(trailingBytes) { - case 5: tmpVal+=*srcPtr++; tmpVal<<=6; - case 4: tmpVal+=*srcPtr++; tmpVal<<=6; - case 3: tmpVal+=*srcPtr++; tmpVal<<=6; - case 2: tmpVal+=*srcPtr++; tmpVal<<=6; - case 1: tmpVal+=*srcPtr++; tmpVal<<=6; - case 0: tmpVal+=*srcPtr++; - break; - - default: - throw Exception(0, 0, - 0, - "transcodeFromUTF8 error: wrong trailingBytes value(%d)", trailingBytes); - } - tmpVal-=gUTFOffsets[trailingBytes]; - - // If it will fit into a single char, then put it in. Otherwise - // fail [*encode it as a surrogate pair. If its not valid, use the - // replacement char.*] - if(!(tmpVal & 0xFFFF0000)) - *outPtr++= xlatOneTo(tmpVal); + unsigned int trailingBytes=gUTFBytes[firstByte]; + + if(srcPtr+trailingBytes>=srcEnd){ + return 0; // not enough bytes in source string for reading + } + + uint tmpVal=0; + switch(trailingBytes){ + case 5: tmpVal+=*srcPtr++; tmpVal<<=6; + case 4: tmpVal+=*srcPtr++; tmpVal<<=6; + case 3: tmpVal+=*srcPtr++; tmpVal<<=6; + case 2: tmpVal+=*srcPtr++; tmpVal<<=6; + case 1: tmpVal+=*srcPtr++; tmpVal<<=6; + case 0: tmpVal+=*srcPtr++; + } + + tmpVal-=gUTFOffsets[trailingBytes]; + UTF8Char=tmpVal; + + return trailingBytes+1; +} + +// skip UTF8 char and return length of this char (in bytes) +static unsigned int skipUTF8Char(const XMLByte*& srcPtr, const XMLByte* srcEnd){ + if(!srcPtr || !*srcPtr || srcPtr>=srcEnd) + return 0; + + unsigned int trailingBytes=gUTFBytes[*srcPtr]+1; + srcPtr+=trailingBytes; + + return trailingBytes; +} + +// read non-UTF8 char, and return number of bytes needed for storing this char in UTF8 +static unsigned int readChar(const XMLByte*& srcPtr, const XMLByte* srcEnd, XMLByte& firstByte, XMLCh& UTF8Char, const Charset::Tables& tables){ + if(!srcPtr || !*srcPtr || srcPtr>=srcEnd) + return 0; + + firstByte=*srcPtr++; + UTF8Char=tables.fromTable[firstByte]; + + if(UTF8Char<0x80) + return 1; + else if(UTF8Char<0x800) + return 2; + else if(UTF8Char<0x10000) + return 3; + else if(UTF8Char<0x200000) + return 4; + else if(UTF8Char<0x4000000) + return 5; + else if(UTF8Char<= 0x7FFFFFFF) + return 6; + + // will use the replacement character '?' + firstByte=0; + return 1; +} + +size_t Charset::calc_escaped_length_UTF8(XMLByte* src, size_t src_length){ + size_t dest_length=0; + + for(UTF8_string_iterator i(src, src_length); i.has_next(); ){ + if(i.getCharSize()==1) + dest_length+=!need_escape(i.getFirstByte())?1/*as-is*/:3/*%XX*/; else - throw Exception(0, 0, - 0, - "transcodeFromUTF8 error: too big tmpVal(0x%08X)", tmpVal); + dest_length+=6; // %uXXXX } - // return - adest_body=dest_body; - adest_content_length=outPtr-dest_body; + return dest_length; } -/// transcode using both charsets -void Charset::transcodeToCharset(Pool& pool, - const Charset& dest_charset, - const void *source_body, size_t source_content_length, - const void *& dest_body, size_t& dest_content_length) const { - if(&dest_charset==this) { - dest_body=source_body; - dest_content_length=source_content_length; - } else - throw Exception(0, 0, - 0, - "transcodeToCharset not supported(yet)"); -/* - void *dest_body; +size_t Charset::calc_escaped_length(const XMLByte* src, size_t src_length, const Charset::Tables& tables){ + const XMLByte* src_end=src+src_length; + XMLByte first_byte; + XMLCh UTF8_char; + size_t dest_length=0; + + while(uint char_size=readChar(src, src_end, first_byte, UTF8_char, tables)){ + if(char_size==1) + dest_length+=(!first_byte/*replacement char '?'*/ || !need_escape(first_byte))?1:3/*'%XX'*/; + else + dest_length+=6; // %uXXXX + } + + return dest_length; +} + +size_t Charset::calc_escaped_length(const String::C src, const Charset& source_charset){ + if(!src.length) + return 0; + +#ifdef PRECALCULATE_DEST_LENGTH + if(source_charset.isUTF8()) + return calc_escaped_length_UTF8((XMLByte *)src.str, src.length); + else + return calc_escaped_length((XMLByte *)src.str, src.length, source_charset.tables); +#else + return src_length*6; // enough for %uXXXX but too memory-hungry +#endif +} + +#define escape_char(dest_ptr, char_size, first_byte, UTF8_char) \ + if(char_size==1) \ + if(first_byte){ \ + if(need_escape(first_byte)) \ + dest_ptr=append_hex_8(dest_ptr, first_byte, "%"); /* %XX */ \ + else \ + *dest_ptr++=first_byte; /*as is*/ \ + } else \ + *dest_ptr++='?'; /* replacement char '?' */ \ + else \ + dest_ptr=append_hex_16(dest_ptr, UTF8_char, "%u"); /* %uXXXX */ + + +size_t Charset::escape_UTF8(const XMLByte* src, size_t src_length, XMLByte* dest) { + XMLByte* dest_ptr=dest; + + // loop until we either run out of input data + for(UTF8_string_iterator i((XMLByte *)src, src_length); i.has_next(); ) + escape_char(dest_ptr, i.getCharSize(), i.getFirstByte(), i.next()) + + return dest_ptr - dest; +} + +size_t Charset::escape(const XMLByte* src, size_t src_length, XMLByte* dest, const Charset::Tables& tables) { + const XMLByte* src_end=src+src_length; + XMLByte* dest_ptr=dest; + + XMLByte first_byte; + XMLCh UTF8_char; + uint char_size; + + while(char_size=readChar(src, src_end, first_byte, UTF8_char, tables)) + escape_char(dest_ptr, char_size, first_byte, UTF8_char) + + return dest_ptr - dest; +} + +String::C Charset::escape(const String::C src, const Charset& source_charset){ + if(!src.length) + return String::C("", 0); + + size_t dest_calculated_length=calc_escaped_length(src, source_charset); + XMLByte *dest_body=new(PointerFreeGC) XMLByte[dest_calculated_length+1/*terminator*/]; + + size_t dest_length; + if(source_charset.isUTF8()) + dest_length=escape_UTF8((XMLByte *)src.str, src.length, dest_body); + else + dest_length=escape((XMLByte *)src.str, src.length, dest_body, source_charset.tables); + + if(dest_length>dest_calculated_length) + throw Exception(0, 0, "Charset::escape buffer overflow"); + + dest_body[dest_length]=0; // terminator + return String::C((char*)dest_body, dest_length); +} + +String::Body Charset::escape(const String::Body src, const Charset& source_charset) { + String::C dest=Charset::escape(String::C(src.cstr(), src.length()), source_charset); + return String::Body(dest.length ? dest.str:0); +} + +String& Charset::escape(const String& src, const Charset& source_charset) { + if(src.is_empty()) + return *new String(); + + return *new String(escape((String::Body)src, source_charset), String::L_CLEAN); +} + +inline bool need_json_escape(unsigned char c){ + return strchr("\n\"\\/\t\r\b\f", c)!=0; +} + +size_t Charset::calc_JSON_escaped_length_UTF8(XMLByte* src, size_t src_length){ + size_t dest_length=0; + + for(UTF8_string_iterator i(src, src_length); i.has_next(); ){ + if(i.getCharSize()==1){ + XMLByte first_byte=i.getFirstByte(); + dest_length+=need_json_escape(first_byte) ? 2 : (first_byte < 0x20 && first_byte /* 0 replacement char is '?' */) ? 6 : 1; + } else + dest_length+=6; // \uXXXX + } + + return dest_length; +} + +size_t Charset::calc_JSON_escaped_length(const XMLByte* src, size_t src_length, const Charset::Tables& tables){ + const XMLByte* src_end=src+src_length; + XMLByte first_byte; + XMLCh UTF8_char; + size_t dest_length=0; + + while(uint char_size=readChar(src, src_end, first_byte, UTF8_char, tables)){ + if(char_size==1) + dest_length+=need_json_escape(first_byte) ? 2 : (first_byte < 0x20 && first_byte /* 0 replacement char is '?' */) ? 6 : 1; + else + dest_length+=6; // \uXXXX + } + + return dest_length; +} + +size_t Charset::calc_JSON_escaped_length(const String::C src, const Charset& source_charset){ + if(!src.length) + return 0; + +#ifdef PRECALCULATE_DEST_LENGTH + if(source_charset.isUTF8()) + return calc_JSON_escaped_length_UTF8((XMLByte *)src.str, src.length); + else + return calc_JSON_escaped_length((XMLByte *)src.str, src.length, source_charset.tables); +#else + return src_length*6; // enough for \uXXXX but too memory-hungry +#endif +} + +#define escape_char_JSON(dest_ptr, char_size, first_byte, UTF8_char) \ + if(char_size==1) \ + switch(first_byte){ \ + case '\n': *dest_ptr++='\\'; *dest_ptr++='n'; break; \ + case '"' : *dest_ptr++='\\'; *dest_ptr++='"'; break; \ + case '\\': *dest_ptr++='\\'; *dest_ptr++='\\'; break; \ + case '/' : *dest_ptr++='\\'; *dest_ptr++='/'; break; \ + case '\t': *dest_ptr++='\\'; *dest_ptr++='t'; break; \ + case '\r': *dest_ptr++='\\'; *dest_ptr++='r'; break; \ + case '\b': *dest_ptr++='\\'; *dest_ptr++='b'; break; \ + case '\f': *dest_ptr++='\\'; *dest_ptr++='f'; break; \ + case 0 : *dest_ptr++='?'; break; /*replacement char*/ \ + default : if(first_byte < 0x20) dest_ptr=append_hex_16(dest_ptr, UTF8_char, "\\u"); \ + else *dest_ptr++=first_byte; \ + } \ + else \ + dest_ptr=append_hex_16(dest_ptr, UTF8_char, "\\u"); // \uXXXX + + +size_t Charset::escape_JSON_UTF8(const XMLByte* src, size_t src_length, XMLByte* dest) { + XMLByte* dest_ptr=dest; + + // loop until we either run out of input data + for(UTF8_string_iterator i((XMLByte *)src, src_length); i.has_next(); ) + escape_char_JSON(dest_ptr, i.getCharSize(), i.getFirstByte(), i.next()) + + return dest_ptr - dest; +} + +size_t Charset::escape_JSON(const XMLByte* src, size_t src_length, XMLByte* dest, const Charset::Tables& tables) { + const XMLByte* src_end=src+src_length; + XMLByte* dest_ptr=dest; - dest_body=pool.malloc(dest_content_length=source_content_length); - // dummy - memset(dest_body, '?', dest_content_length); + XMLByte first_byte; + XMLCh UTF8_char; + uint char_size; - adest_body=dest_body;*/ + while(char_size=readChar(src, src_end, first_byte, UTF8_char, tables)) + escape_char_JSON(dest_ptr, char_size, first_byte, UTF8_char) + + return dest_ptr - dest; +} + +String::C Charset::escape_JSON(const String::C src, const Charset& source_charset){ + if(!src.length) + return String::C("", 0); + + size_t dest_calculated_length=calc_JSON_escaped_length(src, source_charset); + XMLByte *dest_body=new(PointerFreeGC) XMLByte[dest_calculated_length+1/*terminator*/]; + + size_t dest_length; + if(source_charset.isUTF8()) + dest_length=escape_JSON_UTF8((XMLByte *)src.str, src.length, dest_body); + else + dest_length=escape_JSON((XMLByte *)src.str, src.length, dest_body, source_charset.tables); + + if(dest_length>dest_calculated_length) + throw Exception(0, 0, "Charset::escape_JSON buffer overflow"); + + dest_body[dest_length]=0; // terminator + return String::C((char*)dest_body, dest_length); +} + +String::Body Charset::escape_JSON(const String::Body src, const Charset& source_charset) { + String::C dest=Charset::escape_JSON(String::C(src.cstr(), src.length()), source_charset); + return String::Body(dest.length ? dest.str:0); +} + +String& Charset::escape_JSON(const String& src, const Charset& source_charset) { + if(src.is_empty()) + return *new String(); + + return *new String(escape_JSON((String::Body)src, source_charset), String::L_CLEAN); +} + +const String::C Charset::transcodeToUTF8(const String::C src) const { + int src_length=src.length; + +#ifdef PRECALCULATE_DEST_LENGTH + int dest_length=0; + const XMLByte* srcPtr=(XMLByte*)src.str; + const XMLByte* srcEnd=srcPtr+src_length; + XMLByte firstByte; + XMLCh UTF8Char; + while(uint charSize=readChar(srcPtr, srcEnd, firstByte, UTF8Char, tables)) + dest_length+=charSize; +#else + int dest_length=src_length*6; // so that surly enough (max utf8 seq len=6) but too memory-hungry +#endif + +#ifndef NDEBUG + int saved_dest_length=dest_length; +#endif + XMLByte *dest_body=new(PointerFreeGC) XMLByte[dest_length+1/*for terminator*/]; + + if(::transcodeToUTF8( + (XMLByte *)src.str, src_length, + dest_body, dest_length, + tables)<0) + throw Exception(0, 0, "Charset::transcodeToUTF8 buffer overflow"); + + assert(dest_length<=saved_dest_length); + dest_body[dest_length]=0; // terminator + return String::C((char*)dest_body, dest_length); +} + +static XMLCh change_case_UTF8(const XMLCh src, const Charset::UTF8CaseTable& table) { + int lo = 0; + int hi = table.size - 1; + while(lo<=hi) { + // Calc the mid point of the low and high offset. + const unsigned int i = (lo + hi) / 2; + + XMLCh cur=table.records[i].from; + if(src==cur) + return table.records[i].to; + if(src>cur) + lo = i+1; + else + hi = i-1; + } + + // not found + return src; +} + +static void store_UTF8(XMLCh src, XMLByte*& outPtr){ + if(!src) { + // use the replacement character + *outPtr++= '?'; + return; + } + + // Figure out how many bytes we need + unsigned int encodedBytes; + if(src<0x80) + encodedBytes = 1; + else if(src<0x800) + encodedBytes = 2; + else if(src<0x10000) + encodedBytes = 3; + else if(src<0x200000) + encodedBytes = 4; + else if(src<0x4000000) + encodedBytes = 5; + else if(src<= 0x7FFFFFFF) + encodedBytes = 6; + else { + // use the replacement character + *outPtr++= '?'; + return; + } + + // And spit out the bytes. We spit them out in reverse order + // here, so bump up the output pointer and work down as we go. + outPtr+= encodedBytes; + switch(encodedBytes) { + case 6: *--outPtr = XMLByte((src | 0x80UL) & 0xBFUL); + src>>= 6; + case 5: *--outPtr = XMLByte((src | 0x80UL) & 0xBFUL); + src>>= 6; + case 4: *--outPtr = XMLByte((src | 0x80UL) & 0xBFUL); + src>>= 6; + case 3: *--outPtr = XMLByte((src | 0x80UL) & 0xBFUL); + src>>= 6; + case 2: *--outPtr = XMLByte((src | 0x80UL) & 0xBFUL); + src>>= 6; + case 1: *--outPtr = XMLByte(src | gFirstByteMark[encodedBytes]); + } + + // Add the encoded bytes back in again to indicate we've eaten them + outPtr+= encodedBytes; +} + +static void change_case_UTF8(XMLCh src, XMLByte*& outPtr, const Charset::UTF8CaseTable& table) { + store_UTF8(change_case_UTF8(src, table), outPtr); +} + +void change_case_UTF8(const XMLByte* srcData, size_t srcLen, XMLByte* toFill, size_t toFillLen, const Charset::UTF8CaseTable& table) { + const XMLByte* srcPtr=srcData; + const XMLByte* srcEnd=srcData+srcLen; + XMLByte* outPtr=toFill; + XMLByte* outEnd=toFill+toFillLen; + + // We now loop until we either run out of input data, or room to store + while ((srcPtr < srcEnd) && (outPtr < outEnd)) { + // Get the next leading byte out + const XMLByte firstByte =* srcPtr; + + if(firstByte<=127) { + change_case_UTF8(firstByte, outPtr, table); + srcPtr++; + continue; + } + + // See how many trailing src bytes this sequence is going to require + const unsigned int trailingBytes = gUTFBytes[firstByte]; + + // Looks ok, so lets build up the value + uint tmpVal=0; + switch(trailingBytes) { + case 5: tmpVal+=*srcPtr++; tmpVal<<=6; + case 4: tmpVal+=*srcPtr++; tmpVal<<=6; + case 3: tmpVal+=*srcPtr++; tmpVal<<=6; + case 2: tmpVal+=*srcPtr++; tmpVal<<=6; + case 1: tmpVal+=*srcPtr++; tmpVal<<=6; + case 0: tmpVal+=*srcPtr++; + break; + + default: + throw Exception(0, 0, "change_case_UTF8 error: wrong trailingBytes value(%d)", trailingBytes); + } + tmpVal-=gUTFOffsets[trailingBytes]; + + // If it will fit into a single char, then put it in. Otherwise + // fail [*encode it as a surrogate pair. If its not valid, use the + // replacement char.*] + if(!(tmpVal & 0xFFFF0000)) + change_case_UTF8(tmpVal, outPtr, table); + else + throw Exception(0, 0, "change_case_UTF8 error: too big tmpVal(0x%08X)", tmpVal); + } + + if(srcPtr!=outPtr) + throw Exception(0, 0, "change_case_UTF8 error: end pointers do not match"); +} + +static size_t getDecNumLength(XMLCh UTF8Char){ + return + (UTF8Char < 100) + ?2 + :(UTF8Char < 1000) + ?3 + :(UTF8Char < 10000) + ?4 + :5; +} + +const String::C Charset::transcodeFromUTF8(const String::C src) const { + int src_length=src.length; +#ifdef PRECALCULATE_DEST_LENGTH + int dest_length=0; + for(UTF8_string_iterator i((XMLByte *)src.str, src_length); i.has_next(); ){ + dest_length += ( i.next() & 0xFFFF0000 ) + ? 3*i.getCharSize() // %XX for each byte + : ( xlatOneTo(i.next(), tables, 0) != 0 ) + ? 1 // can convert it to a single char + : 3+getDecNumLength( i.next() ); // print char as &#XX;, &#XXX;, &#XXXX; or &#XXXXX; + } +#else + // so that surly enough, "&#XXX;" has max ratio (huh? 8 bytes needed for '&#XXXXX;') + int dest_length=src_length*6; +#endif + +#ifndef NDEBUG + int saved_dest_length=dest_length; +#endif + XMLByte *dest_body=new(PointerFreeGC) XMLByte[dest_length+1/*for terminator*/]; + + if(::transcodeFromUTF8( + (XMLByte *)src.str, src_length, + dest_body, dest_length, + tables)<0) + throw Exception(0, 0, "Charset::transcodeFromUTF8 buffer overflow"); + + assert(dest_length<=saved_dest_length); + dest_body[dest_length]=0; // terminator + return String::C((char*)dest_body, dest_length); +} + +/// transcode using both charsets +const String::C Charset::transcodeToCharset(const String::C src, const Charset& dest_charset) const { + if(&dest_charset==this) + return src; + else { + size_t dest_length=src.length; + XMLByte* dest_body=new(PointerFreeGC) XMLByte[dest_length+1/*for terminator*/]; + + XMLByte* output=dest_body; + const XMLByte* input=(XMLByte *)src.str; + while(XMLCh c=*input++) { + XMLCh curVal = tables.fromTable[c]; + *output++=curVal? + xlatOneTo(curVal, dest_charset.tables, '?') // OK + :'?'; // use the replacement character + } + + dest_body[dest_length]=0; // terminator + return String::C((char*)dest_body, dest_length); + } } +void Charset::store_Char(XMLByte*& outPtr, XMLCh src, XMLByte not_found){ + if(isUTF8()) + store_UTF8(src, outPtr); + else if(char ch=xlatOneTo(src, tables, not_found)) + *outPtr++=ch; +} + #ifdef XML -const char *Charset::transcode_cstr(const XalanDOMString& s) { - const unsigned int len=s.size()*2; - XMLByte* dest=(XMLByte *)malloc((len+1)*sizeof(XMLByte)); - bool error=true; - try { - if(transcoder) { - unsigned int charsEaten; - unsigned int size=transcoder->transcodeTo( - s.c_str(), s.length(), - dest, len, - charsEaten, - XMLTranscoder::UnRep_RepChar //UnRep_Throw + +static const Charset::Tables* tables[MAX_CHARSETS]; +static xmlCharEncodingHandler xml_encoding_handlers[MAX_CHARSETS]; + +#ifdef PA_PATCHED_LIBXML_BACKWARD + +#define declareXml256ioFuncs(i) \ + static int xml256CharEncodingInputFunc##i( \ + unsigned char *out, int *outlen, \ + const unsigned char *in, int *inlen, void*) { \ + return transcodeToUTF8( \ + in, *inlen, \ + out, *outlen, \ + *tables[i]); \ + } \ + static int xml256CharEncodingOutputFunc##i( \ + unsigned char *out, int *outlen, \ + const unsigned char *in, int *inlen, void*) { \ + return transcodeFromUTF8( \ + in, *inlen, \ + out, *outlen, \ + *tables[i]); \ + } + +#else + +#define declareXml256ioFuncs(i) \ + static int xml256CharEncodingInputFunc##i( \ + unsigned char *out, int *outlen, \ + const unsigned char *in, int *inlen) { \ + return transcodeToUTF8( \ + in, *inlen, \ + out, *outlen, \ + *tables[i]); \ + } \ + static int xml256CharEncodingOutputFunc##i( \ + unsigned char *out, int *outlen, \ + const unsigned char *in, int *inlen) { \ + return transcodeFromUTF8( \ + in, *inlen, \ + out, *outlen, \ + *tables[i]); \ + } + +#endif + + +declareXml256ioFuncs(0) declareXml256ioFuncs(1) +declareXml256ioFuncs(2) declareXml256ioFuncs(3) +declareXml256ioFuncs(4) declareXml256ioFuncs(5) +declareXml256ioFuncs(6) declareXml256ioFuncs(7) +declareXml256ioFuncs(8) declareXml256ioFuncs(9) + +static xmlCharEncodingInputFunc inputFuncs[MAX_CHARSETS]={ + xml256CharEncodingInputFunc0, xml256CharEncodingInputFunc1, + xml256CharEncodingInputFunc2, xml256CharEncodingInputFunc3, + xml256CharEncodingInputFunc4, xml256CharEncodingInputFunc5, + xml256CharEncodingInputFunc6, xml256CharEncodingInputFunc7, + xml256CharEncodingInputFunc8, xml256CharEncodingInputFunc9 +}; +static xmlCharEncodingOutputFunc outputFuncs[MAX_CHARSETS]={ + xml256CharEncodingOutputFunc0, xml256CharEncodingOutputFunc1, + xml256CharEncodingOutputFunc2, xml256CharEncodingOutputFunc3, + xml256CharEncodingOutputFunc4, xml256CharEncodingOutputFunc5, + xml256CharEncodingOutputFunc6, xml256CharEncodingOutputFunc7, + xml256CharEncodingOutputFunc8, xml256CharEncodingOutputFunc9 +}; +static size_t handlers_count=0; + +void Charset::addEncoding(char *name_cstr) { + if(handlers_count==MAX_CHARSETS) + throw Exception(0, 0, "already allocated %d handlers, no space for new encoding '%s'", MAX_CHARSETS, name_cstr); + + xmlCharEncodingHandler* handler=&xml_encoding_handlers[handlers_count]; + { + handler->name=name_cstr; + handler->input=inputFuncs[handlers_count]; + handler->output=outputFuncs[handlers_count]; + ::tables[handlers_count]=&tables; + handlers_count++; + } + + xmlRegisterCharEncodingHandler(handler); + +} + +void Charset::initTranscoder(const String::Body NAME, const char* name_cstr) { + ftranscoder=xmlFindCharEncodingHandler(name_cstr); + transcoder(NAME); // check right way +} + +xmlCharEncodingHandler& Charset::transcoder(const String::Body NAME) { + if(!ftranscoder) + throw Exception(PARSER_RUNTIME, new String(NAME, String::L_TAINTED), "unsupported encoding"); + return *ftranscoder; +} + +String::C Charset::transcode_cstr(const xmlChar* s) { + if(!s) + return String::C("", 0); + + int inlen=strlen((const char*)s); + int outlen=inlen*6/*strlen("ÿ")*/; // max +#ifndef NDEBUG + int saved_outlen=outlen; +#endif + char *out=new(PointerFreeGC) char[outlen+1]; + + int error; + if(xmlCharEncodingOutputFunc output=transcoder(FNAME).output) { + error=output( + (unsigned char*)out, &outlen, + (const unsigned char*)s, &inlen +#ifdef PA_PATCHED_LIBXML_BACKWARD + ,0 +#endif ); - dest[size]=0; - error=false; - } - } catch(XMLException& e) { - Exception::provide_source(pool(), 0, e); + } else { + memcpy(out, s, outlen=inlen); + error=0; } - return(const char *)dest; + if(error<0) + throw Exception(0, 0, "transcode_cstr failed (%d)", error); + + assert(outlen<=saved_outlen); out[outlen]=0; + return String::C(out, outlen); } -String& Charset::transcode(const XalanDOMString& s) { - return *NEW String(pool(), transcode_cstr(s)); -} - -std::auto_ptrCharset::transcode_buf(const char *buf, size_t buf_size) { - unsigned int dest_size=0; - XMLCh* dest=(XMLCh *)malloc((buf_size+1)*sizeof(XMLCh)); - unsigned char *charSizes=(unsigned char *)malloc(buf_size*sizeof(unsigned char)); - XalanDOMString *result; - try { - if(transcoder) { - unsigned int bytesEaten; - unsigned int dest_size=transcoder->transcodeFrom( - (unsigned char *)buf, - (const unsigned int)buf_size, - dest,(const unsigned int)buf_size, - bytesEaten, - charSizes +const String& Charset::transcode(const xmlChar* s) { + String::C cstr=transcode_cstr(s); + return *new String(cstr.str, String::L_TAINTED); +} + +/// @test less memory using -maybe- xmlParserInputBufferCreateMem +xmlChar* Charset::transcode_buf2xchar(const char* buf, size_t buf_size) { + xmlChar* out; + int outlen; + int error; +#ifndef NDEBUG + int saved_outlen; +#endif + if(xmlCharEncodingInputFunc input=transcoder(FNAME).input) { + outlen=buf_size*6/*max UTF8 bytes per char*/; +#ifndef NDEBUG + saved_outlen=outlen; +#endif + out=(xmlChar*)xmlMalloc(outlen+1); + error=input( + out, &outlen, + (const unsigned char*)buf, (int*)&buf_size +#ifdef PA_PATCHED_LIBXML_BACKWARD + ,0 +#endif ); - result=new XalanDOMString(dest, dest_size); - } - } catch(XMLException& e) { - Exception::provide_source(pool(), 0, e); - result=0; //calm, compiler + } else { + outlen=buf_size; +#ifndef NDEBUG + saved_outlen=outlen; +#endif + out=(xmlChar*)xmlMalloc(outlen+1); + memcpy(out, buf, outlen); + error=0; } - return std::auto_ptr(result); + if(error<0) + throw Exception(0, 0, "transcode_buf failed (%d)", error); + + assert(outlen<=saved_outlen); out[outlen]=0; + return out; +} + +xmlChar* Charset::transcode(const String& s) { + String::Body sbody=s.cstr_to_string_body_untaint(String::L_AS_IS); + return transcode_buf2xchar(sbody.cstr(), sbody.length()); +} + +xmlChar* Charset::transcode(const String::Body s) { + return transcode_buf2xchar(s.cstr(), s.length()); +} +#endif + +String::Body Charset::transcode(const String::Body src, const Charset& source_transcoder, const Charset& dest_transcoder) { + return String::Body(Charset::transcode(String::C(src.cstr(), src.length()), source_transcoder, dest_transcoder)); +} + +String& Charset::transcode(const String& src, const Charset& source_transcoder, const Charset& dest_transcoder) { + if(src.is_empty()) + return *new String(); + + return *new String(transcode((String::Body)src, source_transcoder, dest_transcoder), String::L_CLEAN); } -std::auto_ptrCharset::transcode(const String& s) { - const char *cstr=s.cstr(String::UL_UNSPECIFIED); - return transcode_buf(cstr, strlen(cstr)); +void Charset::transcode(ArrayString& src, const Charset& source_transcoder, const Charset& dest_transcoder) { + for(size_t i=0; isource_transcoder, *info->dest_transcoder); +} + +void Charset::transcode(HashStringString& src, const Charset& source_transcoder, const Charset& dest_transcoder) { + Transcode_pair_info info={&source_transcoder, &dest_transcoder}; + src.for_each_ref(transcode_pair, &info); +} + +size_t getUTF8BytePos(const XMLByte* srcBegin, const XMLByte* srcEnd, size_t charPos){ + const XMLByte* ptr=srcBegin; + while(charPos-- && skipUTF8Char(ptr, srcEnd)); + + return ptr-srcBegin; +} + +size_t getUTF8CharPos(const XMLByte* srcBegin, const XMLByte* srcEnd, size_t bytePos){ + size_t charPos=0; + const XMLByte* ptr=srcBegin; + const XMLByte* ptrEnd=srcBegin+bytePos; + while(skipUTF8Char(ptr, srcEnd)){ + if(ptr>ptrEnd) + return charPos; + charPos++; + } + + // scan till end but position in bytes still too low + throw Exception(0, 0, "Error conversion byte pos to char pos"); +} + +size_t lengthUTF8(const XMLByte* srcBegin, const XMLByte* srcEnd){ + size_t size=0; + while(skipUTF8Char(srcBegin, srcEnd)) + size++; + + return size; +} + +unsigned int lengthUTF8Char(const XMLByte c){ + return gUTFBytes[c]+1; +} + +const char *fixUTF8(const char *src){ + if(src && *src){ + size_t length=strlen(src); + + int error_offset; + if(pa_pcre_valid_utf((unsigned char *)src, length, &error_offset)){ + + char *result=(char *)pa_malloc_atomic(length+1); + char *dst=result; + + do { + + if(error_offset){ + memcpy(dst, src, error_offset); + dst+=error_offset; + + src+=error_offset; + length-=error_offset; + + } + + *dst++='?'; + src++; + length--; + + } while (length && pa_pcre_valid_utf((unsigned char *)src, length, &error_offset)); + + if(length){ + strcpy(dst, src); + } else { + *dst='\0'; + } + + return result; + } + } + return src; +} + +bool UTF8_string_iterator::has_next(){ + fcharSize=readUTF8Char(fsrcPtr, fsrcEnd, ffirstByte, fUTF8Char); + return fcharSize!=0; +}