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/* libs/graphics/ports/SkXMLParser_expat.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "SkXMLParser.h"
#include "SkString.h"
#include "SkStream.h"
#include "expat.h"
#ifdef SK_BUILD_FOR_PPI
#define CHAR_16_TO_9
#endif
#if defined CHAR_16_TO_9
inline size_t sk_wcslen(const short* char16) {
const short* start = char16;
while (*char16)
char16++;
return char16 - start;
}
inline const char* ConvertUnicodeToChar(const short* ch16, size_t len, SkAutoMalloc& ch8Malloc) {
char* ch8 = (char*) ch8Malloc.get();
int index;
for (index = 0; index < len; index++)
ch8[index] = (char) ch16[index];
ch8[index] = '\0';
return ch8;
}
#endif
static void XMLCALL start_proc(void *data, const char *el, const char **attr)
{
#if defined CHAR_16_TO_9
size_t len = sk_wcslen((const short*) el);
SkAutoMalloc el8(len + 1);
el = ConvertUnicodeToChar((const short*) el, len, el8);
#endif
if (((SkXMLParser*)data)->startElement(el)) {
XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
return;
}
while (*attr)
{
const char* attr0 = attr[0];
const char* attr1 = attr[1];
#if defined CHAR_16_TO_9
size_t len0 = sk_wcslen((const short*) attr0);
SkAutoMalloc attr0_8(len0 + 1);
attr0 = ConvertUnicodeToChar((const short*) attr0, len0, attr0_8);
size_t len1 = sk_wcslen((const short*) attr1);
SkAutoMalloc attr1_8(len1 + 1);
attr1 = ConvertUnicodeToChar((const short*) attr1, len1, attr1_8);
#endif
if (((SkXMLParser*)data)->addAttribute(attr0, attr1)) {
XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
return;
}
attr += 2;
}
}
static void XMLCALL end_proc(void *data, const char *el)
{
#if defined CHAR_16_TO_9
size_t len = sk_wcslen((const short*) el);
SkAutoMalloc el8(len + 1);
el = ConvertUnicodeToChar((const short*) el, len, el8);
#endif
if (((SkXMLParser*)data)->endElement(el))
XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
}
static void XMLCALL text_proc(void* data, const char* text, int len)
{
#if defined CHAR_16_TO_9
SkAutoMalloc text8(len + 1);
text = ConvertUnicodeToChar((const short*) text, len, text8);
#endif
if (((SkXMLParser*)data)->text(text, len))
XML_StopParser((XML_Parser) ((SkXMLParser*)data)->fParser, false);
}
bool SkXMLParser::parse(const char doc[], size_t len)
{
if (len == 0) {
fError->fCode = SkXMLParserError::kEmptyFile;
reportError(NULL);
return false;
}
XML_Parser p = XML_ParserCreate(NULL);
SkASSERT(p);
fParser = p;
XML_SetElementHandler(p, start_proc, end_proc);
XML_SetCharacterDataHandler(p, text_proc);
XML_SetUserData(p, this);
bool success = true;
int error = XML_Parse(p, doc, len, true);
if (error == XML_STATUS_ERROR) {
reportError(p);
success = false;
}
XML_ParserFree(p);
return success;
}
bool SkXMLParser::parse(SkStream& input)
{
size_t len = input.read(NULL, 0);
SkAutoMalloc am(len);
char* doc = (char*)am.get();
input.rewind();
size_t len2 = input.read(doc, len);
SkASSERT(len2 == len);
return this->parse(doc, len2);
}
void SkXMLParser::reportError(void* p)
{
XML_Parser parser = (XML_Parser) p;
if (fError && parser) {
fError->fNativeCode = XML_GetErrorCode(parser);
fError->fLineNumber = XML_GetCurrentLineNumber(parser);
}
}
void SkXMLParser::GetNativeErrorString(int error, SkString* str)
{
if (str)
str->set(XML_ErrorString((XML_Error) error));
}
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