xmlparse.c

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	  return 0;
	}
        buffer = temp;
	if (!buffer) {
	  errorCode = XML_ERROR_NO_MEMORY;
	  eventPtr = eventEndPtr = NULL;
	  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 {
    void *buff = XML_GetBuffer(parser, len);
    if (buff == NULL)
      return 0;
    else {
      memcpy(buff, 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_L("out of memory"),
    XML_L("syntax error"),
    XML_L("no element found"),
    XML_L("not well-formed (invalid token)"),
    XML_L("unclosed token"),
    XML_L("partial character"),
    XML_L("mismatched tag"),
    XML_L("duplicate attribute"),
    XML_L("junk after document element"),
    XML_L("illegal parameter entity reference"),
    XML_L("undefined entity"),
    XML_L("recursive entity reference"),
    XML_L("asynchronous entity"),
    XML_L("reference to invalid character number"),
    XML_L("reference to binary entity"),
    XML_L("reference to external entity in attribute"),
    XML_L("xml processing instruction not at start of external entity"),
    XML_L("unknown encoding"),
    XML_L("encoding specified in XML declaration is incorrect"),
    XML_L("unclosed CDATA section"),
    XML_L("error in processing external entity reference"),
    XML_L("document is not standalone"),
    XML_L("unexpected parser state - please send a bug report")
  };
  if (code > 0 && code < sizeof(message)/sizeof(message[0]))
    return message[code];
  return 0;
}

const XML_LChar *
XML_ExpatVersion(void) {

  /* V1 is used to string-ize the version number. However, it would
     string-ize the actual version macro *names* unless we get them
     substituted before being passed to V1. CPP is defined to expand
     a macro, then rescan for more expansions. Thus, we use V2 to expand
     the version macros, then CPP will expand the resulting V1() macro
     with the correct numerals. */
  /* ### I'm assuming cpp is portable in this respect... */

#define V1(a,b,c) XML_L("expat_")XML_L(#a)XML_L(".")XML_L(#b)XML_L(".")XML_L(#c)
#define V2(a,b,c) V1(a,b,c)

  return V2(XML_MAJOR_VERSION, XML_MINOR_VERSION, XML_MICRO_VERSION);

#undef V1
#undef V2
}

XML_Expat_Version
XML_ExpatVersionInfo(void) {
  XML_Expat_Version version;

  version.major = XML_MAJOR_VERSION;
  version.minor = XML_MINOR_VERSION;
  version.micro = XML_MICRO_VERSION;

  return version;
}

static
enum XML_Error contentProcessor(XML_Parser parser,
				const char *start,
				const char *end,
				const char **endPtr)
{
  return doContent(parser, 0, encoding, start, end, endPtr);
}

static
enum XML_Error externalEntityInitProcessor(XML_Parser parser,
					   const char *start,
					   const char *end,
					   const char **endPtr)
{
  enum XML_Error result = initializeEncoding(parser);
  if (result != XML_ERROR_NONE)
    return result;
  processor = externalEntityInitProcessor2;
  return externalEntityInitProcessor2(parser, start, end, endPtr);
}

static
enum XML_Error externalEntityInitProcessor2(XML_Parser parser,
					    const char *start,
					    const char *end,
					    const char **endPtr)
{
  const char *next = start; /* XmlContentTok doesn't always set the last arg */
  int tok = XmlContentTok(encoding, start, end, &next);
  switch (tok) {
  case XML_TOK_BOM:
    /* if we are at the end of the buffer, this would cause the next stage,
       i.e. externalEntityInitProcessor3, to pass control directly to
       doContent (by detecting XML_TOK_NONE) without processing any xml text
       declaration - causing the error XML_ERROR_MISPLACED_XML_PI in doContent  */
    if (next == end && endPtr) {
      *endPtr = next;
      return XML_ERROR_NONE;
    }
    start = next;
    break;
  case XML_TOK_PARTIAL:
    if (endPtr) {
      *endPtr = start;
      return XML_ERROR_NONE;
    }
    eventPtr = start;
    return XML_ERROR_UNCLOSED_TOKEN;
  case XML_TOK_PARTIAL_CHAR:
    if (endPtr) {
      *endPtr = start;
      return XML_ERROR_NONE;
    }
    eventPtr = start;
    return XML_ERROR_PARTIAL_CHAR;
  }
  processor = externalEntityInitProcessor3;
  return externalEntityInitProcessor3(parser, start, end, endPtr);
}

static
enum XML_Error externalEntityInitProcessor3(XML_Parser parser,
					    const char *start,
					    const char *end,
					    const char **endPtr)
{
  const char *next = start; /* XmlContentTok doesn't always set the last arg */
  int tok = XmlContentTok(encoding, start, end, &next);
  switch (tok) {
  case XML_TOK_XML_DECL:
    {
      enum XML_Error result = processXmlDecl(parser, 1, start, next);
      if (result != XML_ERROR_NONE)
	return result;
      start = next;
    }
    break;
  case XML_TOK_PARTIAL:
    if (endPtr) {
      *endPtr = start;
      return XML_ERROR_NONE;
    }
    eventPtr = start;
    return XML_ERROR_UNCLOSED_TOKEN;
  case XML_TOK_PARTIAL_CHAR:
    if (endPtr) {
      *endPtr = start;
      return XML_ERROR_NONE;
    }
    eventPtr = start;
    return XML_ERROR_PARTIAL_CHAR;
  }
  processor = externalEntityContentProcessor;
  tagLevel = 1;
  return doContent(parser, 1, encoding, start, end, endPtr);
}

static
enum XML_Error externalEntityContentProcessor(XML_Parser parser,
					      const char *start,
					      const char *end,
					      const char **endPtr)
{
  return doContent(parser, 1, encoding, start, end, endPtr);
}

static enum XML_Error
doContent(          XML_Parser  parser,
	                int         startTagLevel,
	        const   ENCODING   *enc,
	        const   char       *s,
	        const   char       *end,
	        const   char     **nextPtr )
{
    const char **eventPP;
    const char **eventEndPP;
    if( enc == encoding )
    {
        eventPP = &eventPtr;
        eventEndPP = &eventEndPtr;
    }else
    {
        eventPP    = &(openInternalEntities->internalEventPtr);
        eventEndPP = &(openInternalEntities->internalEventEndPtr);
    }
    *eventPP = s;
    for(;;)
    {
        const char *next = s; /* XmlContentTok doesn't always set the last arg */
        int tok = XmlContentTok(enc, s, end, &next);
        *eventEndPP = next;
        switch( tok )
        {
            case XML_TOK_TRAILING_CR:
                if( nextPtr )
                {
                    *nextPtr = s;
	                return XML_ERROR_NONE;
                }
                *eventEndPP = end;
                if( characterDataHandler )
                {
	                XML_Char c = 0xA;
	                characterDataHandler(handlerArg, &c, 1);
                }
                else if( defaultHandler )       reportDefault(parser, enc, s, end);
                if( startTagLevel == 0 )        return XML_ERROR_NO_ELEMENTS;
                if( tagLevel != startTagLevel ) return XML_ERROR_ASYNC_ENTITY;
                return XML_ERROR_NONE;

            case XML_TOK_NONE: