src/esi/ExpatParser.cc

   1 /*
   2  * Copyright (C) 1996-2017 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 86    ESI processing */
  10
  11 #include "squid.h"
  12
  13 #if USE_SQUID_ESI && HAVE_LIBEXPAT
  14
  15 #include "esi/ExpatParser.h"
  16
  17 EsiParserDefinition(ESIExpatParser);
  18
  19 ESIExpatParser::ESIExpatParser(ESIParserClient *aClient) : theClient (aClient)
  20 {
  21     /* TODO: grab the document encoding from the headers */
  22     p = XML_ParserCreateNS(NULL,'|');
  23     XML_SetUserData (myParser(), static_cast<void *>(this));
  24     XML_SetElementHandler(myParser(), Start, End);
  25     XML_SetDefaultHandler(myParser(), Default);
  26     XML_SetCommentHandler(myParser(), Comment);
  27     XML_UseParserAsHandlerArg(myParser());
  28 }
  29
  30 ESIExpatParser::~ESIExpatParser()
  31 {
  32     XML_ParserFree (myParser());
  33     p = NULL;
  34 }
  35
  36 void
  37 ESIExpatParser::Start(void *data,const XML_Char *el, const char **attr)
  38 {
  39     XML_Parser parser = static_cast<XML_Parser>(data);
  40     ESIExpatParser *me = (ESIExpatParser *)XML_GetUserData(parser);
  41     me->theClient->start (el, attr, XML_GetSpecifiedAttributeCount (parser));
  42 }
  43
  44 void
  45 ESIExpatParser::End(void *data,const XML_Char *el)
  46 {
  47     XML_Parser parser = static_cast<XML_Parser>(data);
  48     ESIExpatParser *me = (ESIExpatParser *)XML_GetUserData(parser);
  49     me->theClient->end (el);
  50 }
  51
  52 void
  53 ESIExpatParser::Default(void *data, const XML_Char *s, int len)
  54 {
  55     XML_Parser parser = static_cast<XML_Parser>(data);
  56     ESIExpatParser *me = (ESIExpatParser *)XML_GetUserData(parser);
  57     me->theClient->parserDefault (s, len);
  58 }
  59
  60 void
  61 ESIExpatParser::Comment(void *data, const XML_Char *s)
  62 {
  63     XML_Parser parser = static_cast<XML_Parser>(data);
  64     ESIExpatParser *me = (ESIExpatParser *)XML_GetUserData(parser);
  65     me->theClient->parserComment (s);
  66 }
  67
  68 bool
  69 ESIExpatParser::parse(char const *dataToParse, size_t const lengthOfData, bool const endOfStream)
  70 {
  71     return XML_Parse(myParser(), dataToParse, lengthOfData, endOfStream);
  72 }
  73
  74 long int
  75 ESIExpatParser::lineNumber() const
  76 {
  77     return (long int)XML_GetCurrentLineNumber(myParser());
  78 }
  79
  80 char const *
  81 ESIExpatParser::errorString() const
  82 {
  83     return XML_ErrorString(XML_GetErrorCode(myParser()));
  84 }
  85
  86 #endif /* USE_SQUID_ESI */
  87