X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d699f48ba33c96c24f7ab3764ad98ded0633c1c5..93c96bab3d24aaac4e240e83463b1f7874f9d4b8:/src/html/htmlpars.cpp diff --git a/src/html/htmlpars.cpp b/src/html/htmlpars.cpp index 64054fc2d2..3b14f68f30 100644 --- a/src/html/htmlpars.cpp +++ b/src/html/htmlpars.cpp @@ -4,12 +4,12 @@ // Author: Vaclav Slavik // RCS-ID: $Id$ // Copyright: (c) 1999 Vaclav Slavik -// Licence: wxWindows Licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) +#pragma implementation "htmlpars.h" #endif #include "wx/wxprec.h" @@ -17,7 +17,7 @@ #include "wx/defs.h" #if wxUSE_HTML && wxUSE_STREAMS -#ifdef __BORDLANDC__ +#ifdef __BORLANDC__ #pragma hdrstop #endif @@ -35,6 +35,16 @@ #include "wx/dynarray.h" #include "wx/arrimpl.cpp" +#ifdef __WXWINCE__ + #include "wx/msw/wince/missing.h" // for bsearch() +#endif + +// DLL options compatibility check: +#include "wx/app.h" +WX_CHECK_BUILD_OPTIONS("wxHTML") + +const wxChar *wxTRACE_HTML_DEBUG = _T("htmldebug"); + //----------------------------------------------------------------------------- // wxHtmlParser helpers //----------------------------------------------------------------------------- @@ -80,22 +90,28 @@ wxHtmlParser::wxHtmlParser() wxHtmlParser::~wxHtmlParser() { - while (RestoreState()) - DestroyDOMTree(); + while (RestoreState()) {} + DestroyDOMTree(); + + if (m_HandlersStack) + { + wxList& tmp = *m_HandlersStack; + wxList::iterator it, en; + for( it = tmp.begin(), en = tmp.end(); it != en; ++it ) + delete (wxHashTable*)*it; + tmp.clear(); + } delete m_HandlersStack; m_HandlersHash.Clear(); - m_HandlersList.DeleteContents(TRUE); - m_HandlersList.Clear(); + WX_CLEAR_LIST(wxList, m_HandlersList); delete m_entitiesParser; } wxObject* wxHtmlParser::Parse(const wxString& source) { - wxObject *result; - InitParser(source); DoParsing(); - result = GetProduct(); + wxObject *result = GetProduct(); DoneParser(); return result; } @@ -103,6 +119,7 @@ wxObject* wxHtmlParser::Parse(const wxString& source) void wxHtmlParser::InitParser(const wxString& source) { SetSource(source); + m_stopParsing = false; } void wxHtmlParser::DoneParser() @@ -127,6 +144,8 @@ void wxHtmlParser::CreateDOMTree() m_CurTextPiece = 0; } +extern bool wxIsCDATAElement(const wxChar *tag); + void wxHtmlParser::CreateDOMSubTree(wxHtmlTag *cur, int begin_pos, int end_pos, wxHtmlTagsCache *cache) @@ -137,6 +156,15 @@ void wxHtmlParser::CreateDOMSubTree(wxHtmlTag *cur, int i = begin_pos; int textBeginning = begin_pos; + // If the tag contains CDATA text, we include the text between beginning + // and ending tag verbosely. Setting i=end_pos will skip to the very + // end of this function where text piece is added, bypassing any child + // tags parsing (CDATA element can't have child elements by definition): + if (cur != NULL && wxIsCDATAElement(cur->GetName().c_str())) + { + i = end_pos; + } + while (i < end_pos) { c = m_Source.GetChar(i); @@ -176,7 +204,7 @@ void wxHtmlParser::CreateDOMSubTree(wxHtmlTag *cur, // add another tag to the tree: else if (i < end_pos-1 && m_Source.GetChar(i+1) != wxT('/')) - { + { wxHtmlTag *chd; if (cur) chd = new wxHtmlTag(cur, m_Source, @@ -209,6 +237,7 @@ void wxHtmlParser::CreateDOMSubTree(wxHtmlTag *cur, } else i = chd->GetBeginPos(); + textBeginning = i; } @@ -271,25 +300,24 @@ void wxHtmlParser::DoParsing(int begin_pos, int end_pos) pieces[m_CurTextPiece].m_pos < m_CurTag->GetBeginPos())) { // Add text: - AddText(m_Source.Mid(pieces[m_CurTextPiece].m_pos, - pieces[m_CurTextPiece].m_lng)); + AddText(GetEntitiesParser()->Parse( + m_Source.Mid(pieces[m_CurTextPiece].m_pos, + pieces[m_CurTextPiece].m_lng))); begin_pos = pieces[m_CurTextPiece].m_pos + pieces[m_CurTextPiece].m_lng; m_CurTextPiece++; } else if (m_CurTag) { - // Add tag: - if (m_CurTag) - { - if (m_CurTag->HasEnding()) - begin_pos = m_CurTag->GetEndPos2(); - else - begin_pos = m_CurTag->GetBeginPos(); - } + if (m_CurTag->HasEnding()) + begin_pos = m_CurTag->GetEndPos2(); + else + begin_pos = m_CurTag->GetBeginPos(); wxHtmlTag *t = m_CurTag; m_CurTag = m_CurTag->GetNextTag(); AddTag(*t); + if (m_stopParsing) + return; } else break; } @@ -298,11 +326,15 @@ void wxHtmlParser::DoParsing(int begin_pos, int end_pos) void wxHtmlParser::AddTag(const wxHtmlTag& tag) { wxHtmlTagHandler *h; - bool inner = FALSE; + bool inner = false; h = (wxHtmlTagHandler*) m_HandlersHash.Get(tag.GetName()); if (h) + { inner = h->HandleTag(tag); + if (m_stopParsing) + return; + } if (!inner) { if (tag.HasEnding()) @@ -316,7 +348,7 @@ void wxHtmlParser::AddTagHandler(wxHtmlTagHandler *handler) wxStringTokenizer tokenizer(s, wxT(", ")); while (tokenizer.HasMoreTokens()) - m_HandlersHash.Put(tokenizer.NextToken(), handler); + m_HandlersHash.Put(tokenizer.GetNextToken(), handler); if (m_HandlersList.IndexOf(handler) == wxNOT_FOUND) m_HandlersList.Append(handler); @@ -332,14 +364,13 @@ void wxHtmlParser::PushTagHandler(wxHtmlTagHandler *handler, wxString tags) if (m_HandlersStack == NULL) { m_HandlersStack = new wxList; - m_HandlersStack->DeleteContents(TRUE); } - m_HandlersStack->Insert(new wxHashTable(m_HandlersHash)); + m_HandlersStack->Insert((wxObject*)new wxHashTable(m_HandlersHash)); while (tokenizer.HasMoreTokens()) { - key = tokenizer.NextToken(); + key = tokenizer.GetNextToken(); m_HandlersHash.Delete(key); m_HandlersHash.Put(key, handler); } @@ -347,16 +378,22 @@ void wxHtmlParser::PushTagHandler(wxHtmlTagHandler *handler, wxString tags) void wxHtmlParser::PopTagHandler() { - wxNode *first; - - if (m_HandlersStack == NULL || - (first = m_HandlersStack->GetFirst()) == NULL) + wxList::compatibility_iterator first; + + if ( !m_HandlersStack || +#if wxUSE_STL + !(first = m_HandlersStack->GetFirst()) +#else // !wxUSE_STL + ((first = m_HandlersStack->GetFirst()) == NULL) +#endif // wxUSE_STL/!wxUSE_STL + ) { wxLogWarning(_("Warning: attempt to remove HTML tag handler from empty stack.")); return; } m_HandlersHash = *((wxHashTable*) first->GetData()); - m_HandlersStack->DeleteNode(first); + delete (wxHashTable*) first->GetData(); + m_HandlersStack->Erase(first); } void wxHtmlParser::SetSourceAndSaveState(const wxString& src) @@ -383,7 +420,9 @@ void wxHtmlParser::SetSourceAndSaveState(const wxString& src) bool wxHtmlParser::RestoreState() { - if (!m_SavedStates) return FALSE; + if (!m_SavedStates) return false; + + DestroyDOMTree(); wxHtmlParserState *s = m_SavedStates; m_SavedStates = s->m_nextState; @@ -395,7 +434,7 @@ bool wxHtmlParser::RestoreState() m_Source = s->m_source; delete s; - return TRUE; + return true; } //----------------------------------------------------------------------------- @@ -428,11 +467,15 @@ wxHtmlEntitiesParser::~wxHtmlEntitiesParser() void wxHtmlEntitiesParser::SetEncoding(wxFontEncoding encoding) { #if wxUSE_WCHAR_T && !wxUSE_UNICODE - if (encoding == m_encoding) return; + if (encoding == m_encoding) + return; + delete m_conv; - m_conv = NULL; + m_encoding = encoding; - if (m_encoding != wxFONTENCODING_SYSTEM) + if (m_encoding == wxFONTENCODING_SYSTEM) + m_conv = NULL; + else m_conv = new wxCSConv(wxFontMapper::GetEncodingName(m_encoding)); #else (void) encoding; @@ -445,6 +488,8 @@ wxString wxHtmlEntitiesParser::Parse(const wxString& input) const wxChar *in_str = input.c_str(); wxString output; + output.reserve(input.length()); + for (c = in_str, last = in_str; *c != wxT('\0'); c++) { if (*c == wxT('&')) @@ -452,8 +497,11 @@ wxString wxHtmlEntitiesParser::Parse(const wxString& input) if (c - last > 0) output.append(last, c - last); if (++c == wxT('\0')) break; + wxString entity; const wxChar *ent_s = c; + wxChar entity_char; + for (; (*c >= wxT('a') && *c <= wxT('z')) || (*c >= wxT('A') && *c <= wxT('Z')) || (*c >= wxT('0') && *c <= wxT('9')) || @@ -461,7 +509,16 @@ wxString wxHtmlEntitiesParser::Parse(const wxString& input) entity.append(ent_s, c - ent_s); if (*c != wxT(';')) c--; last = c+1; - output << GetEntityChar(entity); + entity_char = GetEntityChar(entity); + if (entity_char) + output << entity_char; + else + { + output.append(ent_s-1, c-ent_s+2); + wxLogTrace(wxTRACE_HTML_DEBUG, + wxT("Unrecognized HTML entity: '%s'"), + entity.c_str()); + } } } if (*last != wxT('\0')) @@ -475,16 +532,15 @@ struct wxHtmlEntityInfo unsigned code; }; -static int LINKAGEMODE compar_entity(const void *key, const void *item) +extern "C" int LINKAGEMODE wxHtmlEntityCompare(const void *key, const void *item) { return wxStrcmp((wxChar*)key, ((wxHtmlEntityInfo*)item)->name); } +#if !wxUSE_UNICODE wxChar wxHtmlEntitiesParser::GetCharForCode(unsigned code) { -#if wxUSE_UNICODE - return (wxChar)code; -#elif wxUSE_WCHAR_T +#if wxUSE_WCHAR_T char buf[2]; wchar_t wbuf[2]; wbuf[0] = (wchar_t)code; @@ -497,6 +553,7 @@ wxChar wxHtmlEntitiesParser::GetCharForCode(unsigned code) return (code < 256) ? (wxChar)code : '?'; #endif } +#endif wxChar wxHtmlEntitiesParser::GetEntityChar(const wxString& entity) { @@ -785,15 +842,90 @@ wxChar wxHtmlEntitiesParser::GetEntityChar(const wxString& entity) info = (wxHtmlEntityInfo*) bsearch(entity.c_str(), substitutions, substitutions_cnt, sizeof(wxHtmlEntityInfo), - compar_entity); + wxHtmlEntityCompare); if (info) code = info->code; } if (code == 0) - return wxT('?'); + return 0; else return GetCharForCode(code); } +wxFSFile *wxHtmlParser::OpenURL(wxHtmlURLType WXUNUSED(type), + const wxString& url) const +{ + return m_FS ? m_FS->OpenFile(url) : NULL; + +} + + +//----------------------------------------------------------------------------- +// wxHtmlParser::ExtractCharsetInformation +//----------------------------------------------------------------------------- + +class wxMetaTagParser : public wxHtmlParser +{ +public: + wxMetaTagParser() { } + + wxObject* GetProduct() { return NULL; } + +protected: + virtual void AddText(const wxChar* WXUNUSED(txt)) {} + + DECLARE_NO_COPY_CLASS(wxMetaTagParser) +}; + +class wxMetaTagHandler : public wxHtmlTagHandler +{ +public: + wxMetaTagHandler(wxString *retval) : wxHtmlTagHandler(), m_retval(retval) {} + wxString GetSupportedTags() { return wxT("META,BODY"); } + bool HandleTag(const wxHtmlTag& tag); + +private: + wxString *m_retval; + + DECLARE_NO_COPY_CLASS(wxMetaTagHandler) +}; + +bool wxMetaTagHandler::HandleTag(const wxHtmlTag& tag) +{ + if (tag.GetName() == _T("BODY")) + { + m_Parser->StopParsing(); + return false; + } + + if (tag.HasParam(_T("HTTP-EQUIV")) && + tag.GetParam(_T("HTTP-EQUIV")).IsSameAs(_T("Content-Type"), false) && + tag.HasParam(_T("CONTENT"))) + { + wxString content = tag.GetParam(_T("CONTENT")).Lower(); + if (content.Left(19) == _T("text/html; charset=")) + { + *m_retval = content.Mid(19); + m_Parser->StopParsing(); + } + } + return false; +} + + +/*static*/ +wxString wxHtmlParser::ExtractCharsetInformation(const wxString& markup) +{ + wxString charset; + wxMetaTagParser *parser = new wxMetaTagParser(); + if(parser) + { + parser->AddTagHandler(new wxMetaTagHandler(&charset)); + parser->Parse(markup); + delete parser; + } + return charset; +} + #endif