Fix another crash when conversion fails in Unix PostScript code.

[wxWidgets.git] / src / html / htmlpars.cpp

diff --git a/src/html/htmlpars.cpp b/src/html/htmlpars.cpp
index 0b43365821117ff9a8a72c7b4817ee263b8c8003..0e38da7bc4b3d1a60bb55aec9b26b10032c1163c 100644 (file)
--- a/src/html/htmlpars.cpp
+++ b/src/html/htmlpars.cpp
@@ -2,7 +2,6 @@
 // Name:        src/html/htmlpars.cpp
 // Purpose:     wxHtmlParser class (generic parser)
 // Author:      Vaclav Slavik
-// RCS-ID:      $Id$
 // Copyright:   (c) 1999 Vaclav Slavik
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
@@ -227,7 +226,7 @@ void wxHtmlParser::CreateDOMSubTree(wxHtmlTag *cur,
             else
             {
                 while (i < end_pos && *i != wxT('>')) ++i;
-                textBeginning = i+1;
+                textBeginning = i < end_pos ? i+1 : i;
             }
         }
         else ++i;
@@ -250,8 +249,7 @@ void wxHtmlParser::DestroyDOMTree()
     }
     m_Tags = m_CurTag = NULL;
 
-    delete m_TextPieces;
-    m_TextPieces = NULL;
+    wxDELETE(m_TextPieces);
 }
 
 void wxHtmlParser::DoParsing()
@@ -433,7 +431,7 @@ void wxHtmlTagHandler::ParseInnerSource(const wxString& source)
 IMPLEMENT_DYNAMIC_CLASS(wxHtmlEntitiesParser,wxObject)
 
 wxHtmlEntitiesParser::wxHtmlEntitiesParser()
-#if wxUSE_WCHAR_T && !wxUSE_UNICODE
+#if !wxUSE_UNICODE
     : m_conv(NULL), m_encoding(wxFONTENCODING_SYSTEM)
 #endif
 {
@@ -441,14 +439,14 @@ wxHtmlEntitiesParser::wxHtmlEntitiesParser()
 
 wxHtmlEntitiesParser::~wxHtmlEntitiesParser()
 {
-#if wxUSE_WCHAR_T && !wxUSE_UNICODE
+#if !wxUSE_UNICODE
     delete m_conv;
 #endif
 }
 
+#if !wxUSE_UNICODE
 void wxHtmlEntitiesParser::SetEncoding(wxFontEncoding encoding)
 {
-#if wxUSE_WCHAR_T && !wxUSE_UNICODE
     if (encoding == m_encoding)
         return;
 
@@ -459,10 +457,8 @@ void wxHtmlEntitiesParser::SetEncoding(wxFontEncoding encoding)
         m_conv = NULL;
     else
         m_conv = new wxCSConv(wxFontMapper::GetEncodingName(m_encoding));
-#else
-    (void) encoding;
-#endif
 }
+#endif // !wxUSE_UNICODE
 
 wxString wxHtmlEntitiesParser::Parse(const wxString& input) const
 {
@@ -523,7 +519,6 @@ wxString wxHtmlEntitiesParser::Parse(const wxString& input) const
 #if !wxUSE_UNICODE
 wxChar wxHtmlEntitiesParser::GetCharForCode(unsigned code) const
 {
-#if wxUSE_WCHAR_T
     char buf[2];
     wchar_t wbuf[2];
     wbuf[0] = (wchar_t)code;
@@ -532,9 +527,6 @@ wxChar wxHtmlEntitiesParser::GetCharForCode(unsigned code) const
     if (conv->WC2MB(buf, wbuf, 2) == (size_t)-1)
         return '?';
     return buf[0];
-#else
-    return (code < 256) ? (wxChar)code : '?';
-#endif
 }
 #endif
 
@@ -876,10 +868,14 @@ wxChar wxHtmlEntitiesParser::GetEntityChar(const wxString& entity) const
         return GetCharForCode(code);
 }
 
-wxFSFile *wxHtmlParser::OpenURL(wxHtmlURLType WXUNUSED(type),
+wxFSFile *wxHtmlParser::OpenURL(wxHtmlURLType type,
                                 const wxString& url) const
 {
-    return m_FS ? m_FS->OpenFile(url) : NULL;
+    int flags = wxFS_READ;
+    if (type == wxHTML_URL_IMAGE)
+        flags |= wxFS_SEEKABLE;
+
+    return m_FS ? m_FS->OpenFile(url, flags) : NULL;
 
 }
 
@@ -960,12 +956,14 @@ wxHtmlParser::SkipCommentTag(wxString::const_iterator& start,
 
     wxString::const_iterator p = start;
 
-    // comments begin with "<!--" in HTML 4.0
-    if ( p > end - 3 || *++p != '!' || *++p != '-' || *++p != '-' )
-    {
-        // not a comment at all
-        return false;
-    }
+    // Comments begin with "<!--" in HTML 4.0; anything shorter or not containing
+    // these characters is not a comment and we're not going to skip it.
+    if ( ++p == end || *p != '!' )
+      return false;
+    if ( ++p == end || *p != '-' )
+      return false;
+    if ( ++p == end || *p != '-' )
+      return false;
 
     // skip the start of the comment tag in any case, if we don't find the
     // closing tag we should ignore broken markup