--- parser3/src/main/pa_charset.C 2001/12/27 19:57:09 1.8 +++ parser3/src/main/pa_charset.C 2004/02/03 15:35:56 1.47 @@ -1,24 +1,36 @@ /** @file Parser: Charset connection implementation. - Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) + Copyright(c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) Author: Alexander Petrosyan(http://paf.design.ru) - - $Id: pa_charset.C,v 1.8 2001/12/27 19:57:09 paf Exp $ */ +static const char * const IDENT_CHARSET_C="$Date: 2004/02/03 15:35:56 $"; + #include "pa_charset.h" +#include "pa_charsets.h" #ifdef XML #include "libxml/encoding.h" #endif -// globals +//#define PA_PATCHED_LIBXML_BACKWARD +// globals -// consts +Charset::UTF8CaseTable::Rec UTF8CaseToUpperRecords[]={ +#include "utf8-to-upper.inc" +}; +Charset::UTF8CaseTable UTF8CaseToUpper={ + sizeof(UTF8CaseToUpperRecords)/sizeof(Charset::UTF8CaseTable::Rec), + UTF8CaseToUpperRecords}; -#define MAX_CHARSET_UNI_CODES 500 +Charset::UTF8CaseTable::Rec UTF8CaseToLowerRecords[]={ +#include "utf8-to-lower.inc" +}; +Charset::UTF8CaseTable UTF8CaseToLower={ + sizeof(UTF8CaseToLowerRecords)/sizeof(Charset::UTF8CaseTable::Rec), + UTF8CaseToLowerRecords}; // helpers @@ -37,7 +49,7 @@ 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) @@ -46,7 +58,7 @@ inline unsigned int to_wchar_code(const char *error_pos; return(unsigned int)strtol(cstr, &error_pos, 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, @@ -71,79 +83,18 @@ static void element2case(unsigned char f fcc_table[from]=to; fcc_table[to]=from; } -/// @test custom encodings -#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&); -}; - -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 - // methods extern "C" unsigned char pcre_default_tables[]; // pcre/chartables.c -Charset::Charset(Pool& apool, const String& aname, const String *request_file_spec): Pooled(apool), - fname(aname) { +Charset::Charset(Request_charsets* charsets, const String::Body ANAME, const String* afile_spec): + FNAME(ANAME), + FNAME_CSTR(ANAME.cstrm()) { - const char *name_cstr=fname.cstr(); - - if(request_file_spec) { + if(afile_spec) { fisUTF8=false; - loadDefinition(*request_file_spec); + load_definition(*charsets, *afile_spec); #ifdef XML - addEncoding(name_cstr); + addEncoding(FNAME_CSTR); #endif } else { fisUTF8=true; @@ -152,17 +103,11 @@ Charset::Charset(Pool& apool, const Stri } #ifdef XML - initTranscoder(&aname, name_cstr); -#endif -} - -Charset::~Charset() { -#ifdef XML - delete transcoder; + initTranscoder(FNAME, FNAME_CSTR); #endif } -void Charset::loadDefinition(const String& request_file_spec) { +void Charset::load_definition(Request_charsets& charsets, const String& afile_spec) { // pcre_tables // lowcase, flipcase, bits digit+word+whitespace, masks @@ -173,23 +118,17 @@ 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(), request_file_spec); + char *data=file_read_text(charsets, 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; @@ -197,7 +136,7 @@ void Charset::loadDefinition(const Strin // char white-space digit hex-digit letter word lowercase unicode1 unicode2 unsigned int 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; // pcre_tables @@ -210,20 +149,20 @@ void Charset::loadDefinition(const Strin case 7: case 8: // charset - if(toTableSize>MAX_CHARSET_UNI_CODES) - throw Exception(0, 0, - &request_file_spec, + if(tables.toTableSize>MAX_CHARSET_UNI_CODES) + throw Exception("parser.runtime", + &afile_spec, "charset must contain not more then %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; } @@ -234,103 +173,56 @@ void Charset::loadDefinition(const Strin 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) { - transcoder=xmlFindCharEncodingHandler(name_cstr); - 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), + _qsort(tables.toTable, tables.toTableSize, sizeof(*tables.toTable), sort_cmp_Trans_rec_intCh); //FILE *f=fopen("c:\\temp\\a", "wb"); - //fwrite(toTable, toTableSize, sizeof(*toTable), f); + //fwrite(tables.toTable, tables.toTableSize, sizeof(*tables.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 - return toTable[midOfs].extCh; - } while(lowOfs+1>= 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; - } - - // 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); - else - throw Exception(0, 0, + // use the replacement character + *outPtr++= '?'; + srcPtr++; + continue; + } + + // 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, size_t& srcLen, + XMLByte* toFill, size_t& 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: too big tmpVal(0x%08X)", tmpVal); + "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)) { + if(XMLByte xlat=xlatOneTo(tmpVal, tables, 0)) + *outPtr++=xlat; + else + outPtr+=sprintf((char *)outPtr, "&#%d;", tmpVal); // &#decimal; + } else + throw Exception(0, + 0, + "transcodeFromUTF8 error: too big tmpVal(0x%08X)", tmpVal); } + + // Update the bytes eaten + srcLen = srcPtr - srcData; + + // Return the characters read + toFillLen = outPtr - toFill; - // return - adest_body=dest_body; - adest_content_length=outPtr-dest_body; + //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; } -/// transcode using both charsets -void Charset::transcodeToCharset(Pool& pool, - const Charset& dest_charset, - const void *source_body, size_t source_content_length, - const void *& adest_body, size_t& adest_content_length) const { - if(&dest_charset==this) { - adest_body=source_body; - adest_content_length=source_content_length; - } else { - size_t dest_content_length=source_content_length; - unsigned char *dest_body=(unsigned char *)pool.malloc(dest_content_length); +/// @todo not so memory-hungry with prescan +const String::C Charset::transcodeToUTF8(const String::C src) const { + size_t src_length=src.length; + size_t dest_length=src.length*6/*so that surly enough, max utf8 seq len=6*/; +#ifndef NDEBUG + size_t 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); +} - const XMLByte* srcPtr=(const XMLByte*)source_body; - const XMLByte* srcEnd=(const XMLByte*)source_body+source_content_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; + } - for(XMLByte* outPtr=dest_body; srcPtr>= 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"); +} + - adest_body=dest_body; - adest_content_length=dest_content_length; +const String::C Charset::transcodeFromUTF8(const String::C src) const { + size_t src_length=src.length; + size_t dest_length=src.length*6/*so that surly enough, "ÿ" has max ratio */; +#ifndef NDEBUG + size_t 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); } } #ifdef XML -const char *Charset::transcode_cstr(GdomeDOMString *s) { - if(!transcoder) - throw Exception(0, 0, + +static const Charset::Tables* tables[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, *(size_t*)inlen, \ + out, *(size_t*)outlen, \ + *tables[i]); \ + } \ + static int xml256CharEncodingOutputFunc##i( \ + unsigned char *out, int *outlen, \ + const unsigned char *in, int *inlen, void*) { \ + return transcodeFromUTF8( \ + in, *(size_t*)inlen, \ + out, *(size_t*)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, *(size_t*)inlen, \ + out, *(size_t*)outlen, \ + *tables[i]); \ + } \ + static int xml256CharEncodingOutputFunc##i( \ + unsigned char *out, int *outlen, \ + const unsigned char *in, int *inlen) { \ + return transcodeFromUTF8( \ + in, *(size_t*)inlen, \ + out, *(size_t*)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, - "transcode_cstr no transcoder"); + "already allocated %d handlers, no space for new encoding '%s'", + MAX_CHARSETS, name_cstr); - int inlen=gdome_str_length(s); - int outlen=inlen+1; // max - char *out=(char *)malloc(outlen*sizeof(char)); - - int size=transcoder->output( - (unsigned char*)out, &outlen, - (const unsigned char*)s->str, &inlen); - if(size<0) - throw Exception(0, 0, + xmlCharEncodingHandler* handler=new(UseGC) xmlCharEncodingHandler; + { + 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(xmlChar* s) { + if(!s) + return String::C("", 0); + + int inlen=strlen((const char*)s); + int outlen=inlen; // 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 + ); + } else { + memcpy(out, s, outlen=inlen); + error=0; + } + if(error<0) + throw Exception(0, 0, - "transcode_cstr failed (%d)", size); + "transcode_cstr failed (%d)", error); - out[size]=0; - return out; + assert(outlen<=saved_outlen); out[outlen]=0; + return String::C(out, outlen); } -String& Charset::transcode(GdomeDOMString *s) { - return *NEW String(pool(), transcode_cstr(s)); +const String& Charset::transcode(xmlChar* s) { + String::C cstr=transcode_cstr(s); + return *new String(cstr.str, cstr.length, true); +} +String::C Charset::transcode_cstr(GdomeDOMString* s) { + return s?transcode_cstr(BAD_CAST s->str) + :String::C("", 0); +} +const String& Charset::transcode(GdomeDOMString* s) { + String::C cstr=transcode_cstr(s); + return *new String(cstr.str, cstr.length, true); } /// @test less memory using -maybe- xmlParserInputBufferCreateMem -GdomeDOMString *Charset::transcode_buf(const char *buf, size_t buf_size) { - if(!transcoder) - throw Exception(0, 0, +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*/; +#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 + ); + } else { + outlen=buf_size; +#ifndef NDEBUG + saved_outlen=outlen; +#endif + out=(xmlChar*)xmlMalloc(outlen+1); + memcpy(out, buf, outlen); + error=0; + } + + if(error<0) + throw Exception(0, 0, - "transcode_buf no transcoder"); + "transcode_buf failed (%d)", error); - int outlen=buf_size*6/*max*/+1; - unsigned char *out=(unsigned char*)malloc(outlen*sizeof(unsigned char)); - int size=transcoder->input( - out, &outlen, - (const unsigned char *)buf, (int *)&buf_size); - if(size<0) - throw Exception(0, 0, - 0, - "transcode_buf failed (%d)", size); + assert(outlen<=saved_outlen); out[outlen]=0; + return out; +} +GdomeDOMString_auto_ptr Charset::transcode_buf2dom(const char* buf, size_t buf_size) { + return GdomeDOMString_auto_ptr(transcode_buf2xchar(buf, buf_size)); +} +GdomeDOMString_auto_ptr Charset::transcode(const String& s) { + const char* cstr=s.cstr(String::L_UNSPECIFIED); + + return transcode_buf2dom(cstr, strlen(cstr)); +} +GdomeDOMString_auto_ptr Charset::transcode(const String::Body s) { + const char* cstr=s.cstr(); + + return transcode_buf2dom(cstr, s.length()); +} +#endif + +String::Body Charset::transcode(const String::Body src, + const Charset& source_transcoder, + const Charset& dest_transcoder) { + + const char *src_ptr=src.cstr(); + size_t src_size=strlen(src_ptr); + + String::C dest=Charset::transcode(String::C(src_ptr, src_size), + source_transcoder, + dest_transcoder); + + return String::Body(dest.str, dest.length); +} + +String& Charset::transcode(const String& src, + const Charset& source_transcoder, + const Charset& dest_transcoder) { + if(!src.length()) + return *new String("", 0, false); - out[size]=0; - return gdome_str_mkref_own((gchar*)out); + return *new String(transcode((String::Body)src, source_transcoder, dest_transcoder), String::L_CLEAN); } -GdomeDOMString *Charset::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); +}