parser/htmlparser/src/CParserContext.cpp

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  38
  39
  40 #include "nsIAtom.h"
  41 #include "CParserContext.h"
  42 #include "nsToken.h"
  43 #include "prenv.h"
  44 #include "nsIHTMLContentSink.h"
  45 #include "nsHTMLTokenizer.h"
  46
  47 CParserContext::CParserContext(nsScanner* aScanner,
  48                                void *aKey,
  49                                eParserCommands aCommand,
  50                                nsIRequestObserver* aListener,
  51                                nsIDTD *aDTD,
  52                                eAutoDetectResult aStatus,
  53                                PRBool aCopyUnused)
  54   : mDTD(aDTD),
  55     mListener(aListener),
  56     mKey(aKey),
  57     mPrevContext(nsnull),
  58     mScanner(aScanner),
  59     mDTDMode(eDTDMode_unknown),
  60     mStreamListenerState(eNone),
  61     mContextType(eCTNone),
  62     mAutoDetectStatus(aStatus),
  63     mParserCommand(aCommand),
  64     mMultipart(PR_TRUE),
  65     mCopyUnused(aCopyUnused),
  66     mNumConsumed(0)
  67 {
  68   MOZ_COUNT_CTOR(CParserContext);
  69 }
  70
  71 CParserContext::~CParserContext()
  72 {
  73   // It's ok to simply ingore the PrevContext.
  74   MOZ_COUNT_DTOR(CParserContext);
  75 }
  76
  77 void
  78 CParserContext::SetMimeType(const nsACString& aMimeType)
  79 {
  80   mMimeType.Assign(aMimeType);
  81
  82   mDocType = ePlainText;
  83
  84   if (mMimeType.EqualsLiteral(kHTMLTextContentType))
  85     mDocType = eHTML_Strict;
  86   else if (mMimeType.EqualsLiteral(kXMLTextContentType)          ||
  87            mMimeType.EqualsLiteral(kXMLApplicationContentType)   ||
  88            mMimeType.EqualsLiteral(kXHTMLApplicationContentType) ||
  89            mMimeType.EqualsLiteral(kXULTextContentType)          ||
  90 #ifdef MOZ_SVG
  91            mMimeType.EqualsLiteral(kSVGTextContentType)          ||
  92 #endif
  93            mMimeType.EqualsLiteral(kRDFApplicationContentType)   ||
  94            mMimeType.EqualsLiteral(kRDFTextContentType))
  95     mDocType = eXML;
  96 }
  97
  98 nsresult
  99 CParserContext::GetTokenizer(PRInt32 aType,
 100                              nsIContentSink* aSink,
 101                              nsITokenizer*& aTokenizer)
 102 {
 103   nsresult result = NS_OK;
 104
 105   if (!mTokenizer) {
 106     if (aType == NS_IPARSER_FLAG_HTML || mParserCommand == eViewSource) {
 107       nsCOMPtr<nsIHTMLContentSink> theSink = do_QueryInterface(aSink);
 108       PRUint16 theFlags = 0;
 109
 110       if (theSink) {
 111         // XXX This code is repeated both here and in CNavDTD. Can the two
 112         // callsites be combined?
 113         PRBool enabled;
 114         theSink->IsEnabled(eHTMLTag_frameset, &enabled);
 115         if(enabled) {
 116           theFlags |= NS_IPARSER_FLAG_FRAMES_ENABLED;
 117         }
 118
 119         theSink->IsEnabled(eHTMLTag_script, &enabled);
 120         if(enabled) {
 121           theFlags |= NS_IPARSER_FLAG_SCRIPT_ENABLED;
 122         }
 123       }
 124
 125       mTokenizer = new nsHTMLTokenizer(mDTDMode, mDocType,
 126                                        mParserCommand, theFlags);
 127       if (!mTokenizer) {
 128         return NS_ERROR_OUT_OF_MEMORY;
 129       }
 130
 131       // Make sure the new tokenizer has all of the necessary information.
 132       // XXX this might not be necessary.
 133       if (mPrevContext) {
 134         mTokenizer->CopyState(mPrevContext->mTokenizer);
 135       }
 136     }
 137     else if (aType == NS_IPARSER_FLAG_XML) {
 138       mTokenizer = do_QueryInterface(mDTD, &result);
 139     }
 140   }
 141
 142   aTokenizer = mTokenizer;
 143
 144   return result;
 145 }