michael@0: 
michael@0: /*
michael@0:  * Copyright 2006 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: 
michael@0: #include "SkXMLParser.h"
michael@0: #include "SkString.h"
michael@0: #include "SkStream.h"
michael@0: 
michael@0: #include "expat.h"
michael@0: 
michael@0: #ifdef SK_BUILD_FOR_PPI
michael@0: #define CHAR_16_TO_9
michael@0: #endif
michael@0: 
michael@0: #if defined CHAR_16_TO_9
michael@0: inline size_t sk_wcslen(const short* char16) {
michael@0:     const short* start = char16;
michael@0:     while (*char16)
michael@0:         char16++;
michael@0:     return char16 - start;
michael@0: }
michael@0: 
michael@0: inline const char* ConvertUnicodeToChar(const short* ch16, size_t len, SkAutoMalloc& ch8Malloc) {
michael@0:     char* ch8 = (char*) ch8Malloc.get();
michael@0:     int index;
michael@0:     for (index = 0; index < len; index++)
michael@0:         ch8[index] = (char) ch16[index];
michael@0:     ch8[index] = '\0';
michael@0:     return ch8;
michael@0: }
michael@0: #endif
michael@0: 
michael@0: static void XMLCALL start_proc(void *data, const char *el, const char **attr)
michael@0: {
michael@0: #if defined CHAR_16_TO_9
michael@0:     size_t len = sk_wcslen((const short*) el);
michael@0:     SkAutoMalloc    el8(len + 1);
michael@0:     el = ConvertUnicodeToChar((const short*) el, len, el8);
michael@0: #endif
michael@0:     if (((SkXMLParser*)data)->startElement(el)) {
michael@0:         XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
michael@0:         return;
michael@0:     }
michael@0:     while (*attr)
michael@0:     {
michael@0:         const char* attr0 = attr[0];
michael@0:         const char* attr1 = attr[1];
michael@0: #if defined CHAR_16_TO_9
michael@0:         size_t len0 = sk_wcslen((const short*) attr0);
michael@0:         SkAutoMalloc    attr0_8(len0 + 1);
michael@0:         attr0 = ConvertUnicodeToChar((const short*) attr0, len0, attr0_8);
michael@0:         size_t len1 = sk_wcslen((const short*) attr1);
michael@0:         SkAutoMalloc    attr1_8(len1 + 1);
michael@0:         attr1 = ConvertUnicodeToChar((const short*) attr1, len1, attr1_8);
michael@0: #endif
michael@0:         if (((SkXMLParser*)data)->addAttribute(attr0, attr1)) {
michael@0:             XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
michael@0:             return;
michael@0:         }
michael@0:         attr += 2;
michael@0:     }
michael@0: }
michael@0: 
michael@0: static void XMLCALL end_proc(void *data, const char *el)
michael@0: {
michael@0: #if defined CHAR_16_TO_9
michael@0:     size_t len = sk_wcslen((const short*) el);
michael@0:     SkAutoMalloc    el8(len + 1);
michael@0:     el = ConvertUnicodeToChar((const short*) el, len, el8);
michael@0: #endif
michael@0:     if (((SkXMLParser*)data)->endElement(el))
michael@0:         XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
michael@0: }
michael@0: 
michael@0: static void XMLCALL text_proc(void* data, const char* text, int len)
michael@0: {
michael@0: #if defined CHAR_16_TO_9
michael@0:     SkAutoMalloc    text8(len + 1);
michael@0:     text = ConvertUnicodeToChar((const short*) text, len, text8);
michael@0: #endif
michael@0:     if (((SkXMLParser*)data)->text(text, len))
michael@0:         XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
michael@0: }
michael@0: 
michael@0: bool SkXMLParser::parse(const char doc[], size_t len)
michael@0: {
michael@0:     if (len == 0) {
michael@0:         fError->fCode = SkXMLParserError::kEmptyFile;
michael@0:         reportError(NULL);
michael@0:         return false;
michael@0:     }
michael@0:     XML_Parser p = XML_ParserCreate(NULL);
michael@0:     SkASSERT(p);
michael@0:     fParser = p;
michael@0:     XML_SetElementHandler(p, start_proc, end_proc);
michael@0:     XML_SetCharacterDataHandler(p, text_proc);
michael@0:     XML_SetUserData(p, this);
michael@0: 
michael@0:     bool success = true;
michael@0:     int error = XML_Parse(p, doc, len, true);
michael@0:     if (error == XML_STATUS_ERROR) {
michael@0:         reportError(p);
michael@0:         success = false;
michael@0:     }
michael@0:     XML_ParserFree(p);
michael@0:     return success;
michael@0: }
michael@0: 
michael@0: bool SkXMLParser::parse(SkStream& input)
michael@0: {
michael@0:     size_t          len = input.getLength();
michael@0:     SkAutoMalloc    am(len);
michael@0:     char*           doc = (char*)am.get();
michael@0: 
michael@0:     input.rewind();
michael@0:     size_t  len2 = input.read(doc, len);
michael@0:     SkASSERT(len2 == len);
michael@0: 
michael@0:     return this->parse(doc, len2);
michael@0: }
michael@0: 
michael@0: void SkXMLParser::reportError(void* p)
michael@0: {
michael@0:     XML_Parser parser = (XML_Parser) p;
michael@0:     if (fError && parser) {
michael@0:         fError->fNativeCode = XML_GetErrorCode(parser);
michael@0:         fError->fLineNumber = XML_GetCurrentLineNumber(parser);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkXMLParser::GetNativeErrorString(int error, SkString* str)
michael@0: {
michael@0:     if (str)
michael@0:         str->set(XML_ErrorString((XML_Error) error));
michael@0: }