xmlparse.c

这是一个完全开放的

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

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

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

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

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

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

void XMLCALL
XML_SetSkippedEntityHandler(XML_Parser parser,
                            XML_SkippedEntityHandler handler)
{
  skippedEntityHandler = handler;
}

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

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

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

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

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

int XMLCALL
XML_SetParamEntityParsing(XML_Parser parser,
                          enum XML_ParamEntityParsing peParsing)
{
  /* block after XML_Parse()/XML_ParseBuffer() has been called */
  if (parsing)
    return 0;
#ifdef XML_DTD
  paramEntityParsing = peParsing;
  return 1;
#else
  return peParsing == XML_PARAM_ENTITY_PARSING_NEVER;
#endif
}

enum XML_Status XMLCALL
XML_Parse(XML_Parser parser, const char *s, int len, int isFinal)
{
  if (len == 0) {
    if (!isFinal)
      return XML_STATUS_OK;
    positionPtr = bufferPtr;
    errorCode = processor(parser, bufferPtr, parseEndPtr = bufferEnd, 0);
    if (errorCode == XML_ERROR_NONE)
      return XML_STATUS_OK;
    eventEndPtr = eventPtr;
    processor = errorProcessor;
    return XML_STATUS_ERROR;
  }
#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 XML_STATUS_OK;
      eventEndPtr = eventPtr;
      processor = errorProcessor;
      return XML_STATUS_ERROR;
    }
    errorCode = processor(parser, s, parseEndPtr = s + len, &end);
    if (errorCode != XML_ERROR_NONE) {
      eventEndPtr = eventPtr;
      processor = errorProcessor;
      return XML_STATUS_ERROR;
    }
    XmlUpdatePosition(encoding, positionPtr, end, &position);
    positionPtr = end;
    nLeftOver = s + len - end;
    if (nLeftOver) {
      if (buffer == NULL || nLeftOver > bufferLim - buffer) {
        /* FIXME avoid integer overflow */
        char *temp;
        temp = (buffer == NULL
                ? (char *)MALLOC(len * 2)
                : (char *)REALLOC(buffer, len * 2));
        if (temp == NULL) {
          errorCode = XML_ERROR_NO_MEMORY;
          return XML_STATUS_ERROR;
        }
        buffer = temp;
        if (!buffer) {
          errorCode = XML_ERROR_NO_MEMORY;
          eventPtr = eventEndPtr = NULL;
          processor = errorProcessor;
          return XML_STATUS_ERROR;
        }
        bufferLim = buffer + len * 2;
      }
      memcpy(buffer, end, nLeftOver);
      bufferPtr = buffer;
      bufferEnd = buffer + nLeftOver;
    }
    return XML_STATUS_OK;
  }
#endif  /* not defined XML_CONTEXT_BYTES */
  else {
    void *buff = XML_GetBuffer(parser, len);
    if (buff == NULL)
      return XML_STATUS_ERROR;
    else {
      memcpy(buff, s, len);
      return XML_ParseBuffer(parser, len, isFinal);
    }
  }
}

enum XML_Status XMLCALL
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 **)NULL : &bufferPtr);
  if (errorCode == XML_ERROR_NONE) {
    if (!isFinal) {
      XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position);
      positionPtr = bufferPtr;
    }
    return XML_STATUS_OK;
  }
  else {
    eventEndPtr = eventPtr;
    processor = errorProcessor;
    return XML_STATUS_ERROR;
  }
}

void * XMLCALL
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 = (char *)MALLOC(bufferSize);
      if (newBuf == 0) {
        errorCode = XML_ERROR_NO_MEMORY;
        return NULL;
      }
      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 XMLCALL
XML_GetErrorCode(XML_Parser parser)
{
  return errorCode;
}

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

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

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

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

void XMLCALL
XML_FreeContentModel(XML_Parser parser, XML_Content *model)
{
  FREE(model);
}

void * XMLCALL
XML_MemMalloc(XML_Parser parser, size_t size)
{
  return MALLOC(size);
}

void * XMLCALL
XML_MemRealloc(XML_Parser parser, void *ptr, size_t size)
{
  return REALLOC(ptr, size);
}

void XMLCALL
XML_MemFree(XML_Parser parser, void *ptr)
{
  FREE(ptr);
}

void XMLCALL
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 * XMLCALL
XML_ErrorString(enum XML_Error 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 declaration 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"),
    XML_L("entity declared in parameter entity"),
    XML_L("requested feature requires XML_DTD support in Expat"),
    XML_L("cannot change setting once parsing has begun"),
    XML_L("unbound prefix")
  };
  if (code > 0 && code < sizeof(message)/sizeof(message[0]))
    return message[code];
  return NULL;
}

const XML_LChar * XMLCALL
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(#a)XML_L(".")XML_L(#b)XML_L(".")XML_L(#c)
#define V2(a,b,c) XML_L("expat_")V1(a,b,c)

  return V2(XML_MAJOR_VERSION, XML_MINOR_VERSION, XML_MICRO_VERSION);

#undef V1
#undef V2
}

XML_Expat_Version XMLCALL
XML_ExpatVersionInfo(void)
{
  XML_Expat_Version version;

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

  return version;
}