xmlparse.c

一套很值得分析的短信SMS开发源代码。是我今年早些时候从taobao上买来的。但我现在也没看完（先说清楚

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void XML_SetUserData(XML_Parser parser, void *p)
{
  if (handlerArg == userData)
    handlerArg = userData = p;
  else
    userData = p;
}

int XML_SetBase(XML_Parser parser, const XML_Char *p)
{
  if (p) {
    p = poolCopyString(&dtd.pool, p);
    if (!p)
      return 0;
    curBase = p;
  }
  else
    curBase = 0;
  return 1;
}

const XML_Char *XML_GetBase(XML_Parser parser)
{
  return curBase;
}

int XML_GetSpecifiedAttributeCount(XML_Parser parser)
{
  return nSpecifiedAtts;
}

int XML_GetIdAttributeIndex(XML_Parser parser)
{
  return idAttIndex;
}

void XML_SetElementHandler(XML_Parser parser,
			   XML_StartElementHandler start,
			   XML_EndElementHandler end)
{
  startElementHandler = start;
  endElementHandler = end;
}

void XML_SetStartElementHandler(XML_Parser parser,
				XML_StartElementHandler start) {
  startElementHandler = start;
}

void XML_SetEndElementHandler(XML_Parser parser,
			      XML_EndElementHandler end) {
  endElementHandler = end;
}

void XML_SetCharacterDataHandler(XML_Parser parser,
				 XML_CharacterDataHandler handler)
{
  characterDataHandler = handler;
}

void XML_SetProcessingInstructionHandler(XML_Parser parser,
					 XML_ProcessingInstructionHandler handler)
{
  processingInstructionHandler = handler;
}

void XML_SetCommentHandler(XML_Parser parser,
			   XML_CommentHandler handler)
{
  commentHandler = handler;
}

void XML_SetCdataSectionHandler(XML_Parser parser,
				XML_StartCdataSectionHandler start,
			        XML_EndCdataSectionHandler end)
{
  startCdataSectionHandler = start;
  endCdataSectionHandler = end;
}

void XML_SetStartCdataSectionHandler(XML_Parser parser,
                                     XML_StartCdataSectionHandler start) {
  startCdataSectionHandler = start;
}

void XML_SetEndCdataSectionHandler(XML_Parser parser,
                                   XML_EndCdataSectionHandler end) {
  endCdataSectionHandler = end;
}

void XML_SetDefaultHandler(XML_Parser parser,
			   XML_DefaultHandler handler)
{
  defaultHandler = handler;
  defaultExpandInternalEntities = 0;
}

void XML_SetDefaultHandlerExpand(XML_Parser parser,
				 XML_DefaultHandler handler)
{
  defaultHandler = handler;
  defaultExpandInternalEntities = 1;
}

void XML_SetDoctypeDeclHandler(XML_Parser parser,
			       XML_StartDoctypeDeclHandler start,
			       XML_EndDoctypeDeclHandler end)
{
  startDoctypeDeclHandler = start;
  endDoctypeDeclHandler = end;
}

void XML_SetStartDoctypeDeclHandler(XML_Parser parser,
				    XML_StartDoctypeDeclHandler start) {
  startDoctypeDeclHandler = start;
}

void XML_SetEndDoctypeDeclHandler(XML_Parser parser,
				  XML_EndDoctypeDeclHandler end) {
  endDoctypeDeclHandler = end;
}

void XML_SetUnparsedEntityDeclHandler(XML_Parser parser,
				      XML_UnparsedEntityDeclHandler handler)
{
  unparsedEntityDeclHandler = handler;
}

void XML_SetNotationDeclHandler(XML_Parser parser,
				XML_NotationDeclHandler handler)
{
  notationDeclHandler = handler;
}

void XML_SetNamespaceDeclHandler(XML_Parser parser,
				 XML_StartNamespaceDeclHandler start,
				 XML_EndNamespaceDeclHandler end)
{
  startNamespaceDeclHandler = start;
  endNamespaceDeclHandler = end;
}

void XML_SetStartNamespaceDeclHandler(XML_Parser parser,
				      XML_StartNamespaceDeclHandler start) {
  startNamespaceDeclHandler = start;
}

void XML_SetEndNamespaceDeclHandler(XML_Parser parser,
				    XML_EndNamespaceDeclHandler end) {
  endNamespaceDeclHandler = end;
}


void XML_SetNotStandaloneHandler(XML_Parser parser,
				 XML_NotStandaloneHandler handler)
{
  notStandaloneHandler = handler;
}

void XML_SetExternalEntityRefHandler(XML_Parser parser,
				     XML_ExternalEntityRefHandler handler)
{
  externalEntityRefHandler = handler;
}

void XML_SetExternalEntityRefHandlerArg(XML_Parser parser, void *arg)
{
  if (arg)
    externalEntityRefHandlerArg = arg;
  else
    externalEntityRefHandlerArg = parser;
}

void XML_SetUnknownEncodingHandler(XML_Parser parser,
				   XML_UnknownEncodingHandler handler,
				   void *data)
{
  unknownEncodingHandler = handler;
  unknownEncodingHandlerData = data;
}

void XML_SetElementDeclHandler(XML_Parser parser,
			       XML_ElementDeclHandler eldecl)
{
  elementDeclHandler = eldecl;
}

void XML_SetAttlistDeclHandler(XML_Parser parser,
			       XML_AttlistDeclHandler attdecl)
{
  attlistDeclHandler = attdecl;
}

void XML_SetEntityDeclHandler(XML_Parser parser,
			      XML_EntityDeclHandler handler)
{
  entityDeclHandler = handler;
}

void XML_SetXmlDeclHandler(XML_Parser parser,
			   XML_XmlDeclHandler handler) {
  xmlDeclHandler = handler;
}

int XML_SetParamEntityParsing(XML_Parser parser,
			      enum XML_ParamEntityParsing parsing)
{
#ifdef XML_DTD
  paramEntityParsing = parsing;
  return 1;
#else
  return parsing == XML_PARAM_ENTITY_PARSING_NEVER;
#endif
}

int XML_Parse(XML_Parser parser, const char *s, int len, int isFinal)
{
  if (len == 0) {
    if (!isFinal)
      return 1;
    positionPtr = bufferPtr;
    errorCode = processor(parser, bufferPtr, parseEndPtr = bufferEnd, 0);
    if (errorCode == XML_ERROR_NONE)
      return 1;
    eventEndPtr = eventPtr;
    processor = errorProcessor;
    return 0;
  }
#ifndef XML_CONTEXT_BYTES
  else if (bufferPtr == bufferEnd) {
    const char *end;
    int nLeftOver;
    parseEndByteIndex += len;
    positionPtr = s;
    if (isFinal) {
      errorCode = processor(parser, s, parseEndPtr = s + len, 0);
      if (errorCode == XML_ERROR_NONE)
	return 1;
      eventEndPtr = eventPtr;
      processor = errorProcessor;
      return 0;
    }
    errorCode = processor(parser, s, parseEndPtr = s + len, &end);
    if (errorCode != XML_ERROR_NONE) {
      eventEndPtr = eventPtr;
      processor = errorProcessor;
      return 0;
    }
    XmlUpdatePosition(encoding, positionPtr, end, &position);
    nLeftOver = s + len - end;
    if (nLeftOver) {
      if (buffer == 0 || nLeftOver > bufferLim - buffer) {
	/* FIXME avoid integer overflow */
	buffer = buffer == 0 ? MALLOC(len * 2) : REALLOC(buffer, len * 2);
	/* FIXME storage leak if realloc fails */
	if (!buffer) {
	  errorCode = XML_ERROR_NO_MEMORY;
	  eventPtr = eventEndPtr = 0;
	  processor = errorProcessor;
	  return 0;
	}
	bufferLim = buffer + len * 2;
      }
      memcpy(buffer, end, nLeftOver);
      bufferPtr = buffer;
      bufferEnd = buffer + nLeftOver;
    }
    return 1;
  }
#endif  /* not defined XML_CONTEXT_BYTES */
  else {
    memcpy(XML_GetBuffer(parser, len), s, len);
    return XML_ParseBuffer(parser, len, isFinal);
  }
}

int XML_ParseBuffer(XML_Parser parser, int len, int isFinal)
{
  const char *start = bufferPtr;
  positionPtr = start;
  bufferEnd += len;
  parseEndByteIndex += len;
  errorCode = processor(parser, start, parseEndPtr = bufferEnd,
			isFinal ? (const char **)0 : &bufferPtr);
  if (errorCode == XML_ERROR_NONE) {
    if (!isFinal)
      XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position);
    return 1;
  }
  else {
    eventEndPtr = eventPtr;
    processor = errorProcessor;
    return 0;
  }
}

void *XML_GetBuffer(XML_Parser parser, int len)
{
  if (len > bufferLim - bufferEnd) {
    /* FIXME avoid integer overflow */
    int neededSize = len + (bufferEnd - bufferPtr);
#ifdef XML_CONTEXT_BYTES
    int keep = bufferPtr - buffer;

    if (keep > XML_CONTEXT_BYTES)
      keep = XML_CONTEXT_BYTES;
    neededSize += keep;
#endif  /* defined XML_CONTEXT_BYTES */
    if (neededSize  <= bufferLim - buffer) {
#ifdef XML_CONTEXT_BYTES
      if (keep < bufferPtr - buffer) {
	int offset = (bufferPtr - buffer) - keep;
	memmove(buffer, &buffer[offset], bufferEnd - bufferPtr + keep);
	bufferEnd -= offset;
	bufferPtr -= offset;
      }
#else
      memmove(buffer, bufferPtr, bufferEnd - bufferPtr);
      bufferEnd = buffer + (bufferEnd - bufferPtr);
      bufferPtr = buffer;
#endif  /* not defined XML_CONTEXT_BYTES */
    }
    else {
      char *newBuf;
      int bufferSize = bufferLim - bufferPtr;
      if (bufferSize == 0)
	bufferSize = INIT_BUFFER_SIZE;
      do {
	bufferSize *= 2;
      } while (bufferSize < neededSize);
      newBuf = MALLOC(bufferSize);
      if (newBuf == 0) {
	errorCode = XML_ERROR_NO_MEMORY;
	return 0;
      }
      bufferLim = newBuf + bufferSize;
#ifdef XML_CONTEXT_BYTES
      if (bufferPtr) {
	int keep = bufferPtr - buffer;
	if (keep > XML_CONTEXT_BYTES)
	  keep = XML_CONTEXT_BYTES;
	memcpy(newBuf, &bufferPtr[-keep], bufferEnd - bufferPtr + keep);
	FREE(buffer);
	buffer = newBuf;
	bufferEnd = buffer + (bufferEnd - bufferPtr) + keep;
	bufferPtr = buffer + keep;
      }
      else {
	bufferEnd = newBuf + (bufferEnd - bufferPtr);
	bufferPtr = buffer = newBuf;
      }
#else
      if (bufferPtr) {
	memcpy(newBuf, bufferPtr, bufferEnd - bufferPtr);
	FREE(buffer);
      }
      bufferEnd = newBuf + (bufferEnd - bufferPtr);
      bufferPtr = buffer = newBuf;
#endif  /* not defined XML_CONTEXT_BYTES */
    }
  }
  return bufferEnd;
}

enum XML_Error XML_GetErrorCode(XML_Parser parser)
{
  return errorCode;
}

long XML_GetCurrentByteIndex(XML_Parser parser)
{
  if (eventPtr)
    return parseEndByteIndex - (parseEndPtr - eventPtr);
  return -1;
}

int XML_GetCurrentByteCount(XML_Parser parser)
{
  if (eventEndPtr && eventPtr)
    return eventEndPtr - eventPtr;
  return 0;
}

const char * XML_GetInputContext(XML_Parser parser, int *offset, int *size)
{
#ifdef XML_CONTEXT_BYTES
  if (eventPtr && buffer) {
    *offset = eventPtr - buffer;
    *size   = bufferEnd - buffer;
    return buffer;
  }
#endif /* defined XML_CONTEXT_BYTES */
  return (char *) 0;
}

int XML_GetCurrentLineNumber(XML_Parser parser)
{
  if (eventPtr) {
    XmlUpdatePosition(encoding, positionPtr, eventPtr, &position);
    positionPtr = eventPtr;
  }
  return position.lineNumber + 1;
}

int XML_GetCurrentColumnNumber(XML_Parser parser)
{
  if (eventPtr) {
    XmlUpdatePosition(encoding, positionPtr, eventPtr, &position);
    positionPtr = eventPtr;
  }
  return position.columnNumber;
}

void XML_DefaultCurrent(XML_Parser parser)
{
  if (defaultHandler) {
    if (openInternalEntities)
      reportDefault(parser,
	            internalEncoding,
		    openInternalEntities->internalEventPtr,
		    openInternalEntities->internalEventEndPtr);
    else
      reportDefault(parser, encoding, eventPtr, eventEndPtr);
  }
}

const XML_LChar *XML_ErrorString(int code)
{
  static const XML_LChar *message[] = {
    0,
    XML_T("out of memory"),
    XML_T("syntax error"),
    XML_T("no element found"),