X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d95e254418b19430f1f8dee85ab67d64602662ac..04fa04d8067d235ab45b5bc05b65f0679634b541:/src/html/htmlpars.cpp diff --git a/src/html/htmlpars.cpp b/src/html/htmlpars.cpp index 806d4bb5b5..ed99a443b6 100644 --- a/src/html/htmlpars.cpp +++ b/src/html/htmlpars.cpp @@ -1,37 +1,74 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: htmlpars.cpp +// Name: src/html/htmlpars.cpp // Purpose: wxHtmlParser class (generic parser) // Author: Vaclav Slavik // RCS-ID: $Id$ // Copyright: (c) 1999 Vaclav Slavik -// Licence: wxWindows Licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +#include "wx/wxprec.h" -#ifdef __GNUG__ -#pragma implementation +#ifdef __BORLANDC__ + #pragma hdrstop #endif -#include +#if wxUSE_HTML && wxUSE_STREAMS -#include "wx/defs.h" -#if wxUSE_HTML - -#ifdef __BORDLANDC__ -#pragma hdrstop -#endif - -#ifndef WXPRECOMP -#include +#ifndef WX_PRECOMP + #include "wx/dynarray.h" + #include "wx/log.h" + #include "wx/intl.h" + #include "wx/app.h" + #include "wx/wxcrtvararg.h" #endif #include "wx/tokenzr.h" #include "wx/wfstream.h" #include "wx/url.h" +#include "wx/fontmap.h" #include "wx/html/htmldefs.h" #include "wx/html/htmlpars.h" +#include "wx/vector.h" + +#ifdef __WXWINCE__ + #include "wx/msw/wince/missing.h" // for bsearch() +#endif + +// DLL options compatibility check: +WX_CHECK_BUILD_OPTIONS("wxHTML") + +const wxChar *wxTRACE_HTML_DEBUG = wxT("htmldebug"); + +//----------------------------------------------------------------------------- +// wxHtmlParser helpers +//----------------------------------------------------------------------------- +class wxHtmlTextPiece +{ +public: + wxHtmlTextPiece() {} + wxHtmlTextPiece(const wxString::const_iterator& start, + const wxString::const_iterator& end) + : m_start(start), m_end(end) {} + wxString::const_iterator m_start, m_end; +}; + +// NB: this is an empty class and not typedef because of forward declaration +class wxHtmlTextPieces : public wxVector +{ +}; +class wxHtmlParserState +{ +public: + wxHtmlTag *m_curTag; + wxHtmlTag *m_tags; + wxHtmlTextPieces *m_textPieces; + int m_curTextPiece; + const wxString *m_source; + wxHtmlParserState *m_nextState; +}; //----------------------------------------------------------------------------- // wxHtmlParser @@ -39,128 +76,927 @@ IMPLEMENT_ABSTRACT_CLASS(wxHtmlParser,wxObject) +wxHtmlParser::wxHtmlParser() + : wxObject(), + m_FS(NULL) +{ + m_Source = NULL; + m_entitiesParser = new wxHtmlEntitiesParser; + m_Tags = NULL; + m_CurTag = NULL; + m_TextPieces = NULL; + m_CurTextPiece = 0; + m_SavedStates = NULL; +} -wxObject* wxHtmlParser::Parse(const wxString& source) +wxHtmlParser::~wxHtmlParser() { - wxObject *result; + while (RestoreState()) {} + DestroyDOMTree(); + WX_CLEAR_ARRAY(m_HandlersStack); + WX_CLEAR_HASH_SET(wxHtmlTagHandlersSet, m_HandlersSet); + delete m_entitiesParser; + delete m_Source; +} + +wxObject* wxHtmlParser::Parse(const wxString& source) +{ InitParser(source); DoParsing(); - result = GetProduct(); + wxObject *result = GetProduct(); DoneParser(); return result; } - - void wxHtmlParser::InitParser(const wxString& source) { - m_Source = source; - m_Cache = new wxHtmlTagsCache(m_Source); + SetSource(source); + m_stopParsing = false; } - - - + void wxHtmlParser::DoneParser() { - delete m_Cache; - m_Cache = NULL; + DestroyDOMTree(); } +void wxHtmlParser::SetSource(const wxString& src) +{ + DestroyDOMTree(); + // NB: This is allocated on heap because wxHtmlTag uses iterators and + // making a copy of m_Source string in SetSourceAndSaveState() and + // RestoreState() would invalidate them (because wxString::m_impl's + // memory would change completely twice and iterators use pointers + // into it). So instead, we keep the string object intact and only + // store/restore pointer to it, for which we need it to be allocated + // on the heap. + delete m_Source; + m_Source = new wxString(src); + CreateDOMTree(); + m_CurTag = NULL; + m_CurTextPiece = 0; +} +void wxHtmlParser::CreateDOMTree() +{ + wxHtmlTagsCache cache(*m_Source); + m_TextPieces = new wxHtmlTextPieces; + CreateDOMSubTree(NULL, m_Source->begin(), m_Source->end(), &cache); + m_CurTextPiece = 0; +} -#define HTML_MAX_BUFLEN 1024 +extern bool wxIsCDATAElement(const wxString& tag); -void wxHtmlParser::DoParsing(int begin_pos, int end_pos) +void wxHtmlParser::CreateDOMSubTree(wxHtmlTag *cur, + const wxString::const_iterator& begin_pos, + const wxString::const_iterator& end_pos, + wxHtmlTagsCache *cache) { - char temp[HTML_BUFLEN], c; - int i; - int templen; + if (end_pos <= begin_pos) + return; + + wxChar c; + wxString::const_iterator i = begin_pos; + wxString::const_iterator 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())) + { + i = end_pos; + } - templen = 0; - i = begin_pos; + while (i < end_pos) + { + c = *i; - while (i < end_pos) { - c = m_Source[i]; + if (c == wxT('<')) + { + // add text to m_TextPieces: + if (i > textBeginning) + m_TextPieces->push_back(wxHtmlTextPiece(textBeginning, i)); - // continue building word: - if (c != '<') { - temp[templen++] = c; - if (templen == HTML_BUFLEN-1) { - temp[templen] = 0; - AddText(temp); - templen = 0; + // if it is a comment, skip it: + if ( SkipCommentTag(i, m_Source->end()) ) + { + textBeginning = i = i + 1; // skip closing '>' too } - i++; - } - else if (c == '<') { - wxHtmlTag tag(m_Source, i, end_pos, m_Cache); + // add another tag to the tree: + else if (i < end_pos-1 && *(i+1) != wxT('/')) + { + wxHtmlTag *chd; + if (cur) + chd = new wxHtmlTag(cur, m_Source, + i, end_pos, cache, m_entitiesParser); + else + { + chd = new wxHtmlTag(NULL, m_Source, + i, end_pos, cache, m_entitiesParser); + if (!m_Tags) + { + // if this is the first tag to be created make the root + // m_Tags point to it: + m_Tags = chd; + } + else + { + // if there is already a root tag add this tag as + // the last sibling: + chd->m_Prev = m_Tags->GetLastSibling(); + chd->m_Prev->m_Next = chd; + } + } + + if (chd->HasEnding()) + { + CreateDOMSubTree(chd, + chd->GetBeginIter(), chd->GetEndIter1(), + cache); + i = chd->GetEndIter2(); + } + else + i = chd->GetBeginIter(); + + textBeginning = i; + } - if (templen) { - temp[templen] = 0; - AddText(temp); - templen = 0; + // ... or skip ending tag: + else + { + while (i < end_pos && *i != wxT('>')) ++i; + textBeginning = i < end_pos ? i+1 : i; } - AddTag(tag); - if (tag.HasEnding()) i = tag.GetEndPos2(); - else i = tag.GetBeginPos(); } + else ++i; } - if (templen) { // last word of block :-( - temp[templen] = 0; - AddText(temp); + // add remaining text to m_TextPieces: + if (end_pos > textBeginning) + m_TextPieces->push_back(wxHtmlTextPiece(textBeginning, end_pos)); +} + +void wxHtmlParser::DestroyDOMTree() +{ + wxHtmlTag *t1, *t2; + t1 = m_Tags; + while (t1) + { + t2 = t1->GetNextSibling(); + delete t1; + t1 = t2; } + m_Tags = m_CurTag = NULL; + + wxDELETE(m_TextPieces); } +void wxHtmlParser::DoParsing() +{ + m_CurTag = m_Tags; + m_CurTextPiece = 0; + DoParsing(m_Source->begin(), m_Source->end()); +} +void wxHtmlParser::DoParsing(const wxString::const_iterator& begin_pos_, + const wxString::const_iterator& end_pos) +{ + wxString::const_iterator begin_pos(begin_pos_); + + if (end_pos <= begin_pos) + return; + + wxHtmlTextPieces& pieces = *m_TextPieces; + size_t piecesCnt = pieces.size(); + + while (begin_pos < end_pos) + { + while (m_CurTag && m_CurTag->GetBeginIter() < begin_pos) + m_CurTag = m_CurTag->GetNextTag(); + while (m_CurTextPiece < piecesCnt && + pieces[m_CurTextPiece].m_start < begin_pos) + m_CurTextPiece++; + + if (m_CurTextPiece < piecesCnt && + (!m_CurTag || + pieces[m_CurTextPiece].m_start < m_CurTag->GetBeginIter())) + { + // Add text: + AddText(GetEntitiesParser()->Parse( + wxString(pieces[m_CurTextPiece].m_start, + pieces[m_CurTextPiece].m_end))); + begin_pos = pieces[m_CurTextPiece].m_end; + m_CurTextPiece++; + } + else if (m_CurTag) + { + if (m_CurTag->HasEnding()) + begin_pos = m_CurTag->GetEndIter2(); + else + begin_pos = m_CurTag->GetBeginIter(); + wxHtmlTag *t = m_CurTag; + m_CurTag = m_CurTag->GetNextTag(); + AddTag(*t); + if (m_stopParsing) + return; + } + else break; + } +} void wxHtmlParser::AddTag(const wxHtmlTag& tag) { - wxHtmlTagHandler *h; - bool inner = FALSE; - - h = (wxHtmlTagHandler*) m_HandlersHash.Get(tag.GetName()); - if (h) - inner = h -> HandleTag(tag); - if (!inner) { + bool inner = false; + + wxHtmlTagHandlersHash::const_iterator h = m_HandlersHash.find(tag.GetName()); + if (h != m_HandlersHash.end()) + { + inner = h->second->HandleTag(tag); + if (m_stopParsing) + return; + } + if (!inner) + { if (tag.HasEnding()) - DoParsing(tag.GetBeginPos(), tag.GetEndPos1()); + DoParsing(tag.GetBeginIter(), tag.GetEndIter1()); } } - - void wxHtmlParser::AddTagHandler(wxHtmlTagHandler *handler) { - wxString s(handler -> GetSupportedTags()); - wxStringTokenizer tokenizer(s, ", "); + wxString s(handler->GetSupportedTags()); + wxStringTokenizer tokenizer(s, wxT(", ")); while (tokenizer.HasMoreTokens()) - m_HandlersHash.Put(tokenizer.NextToken(), handler); + m_HandlersHash[tokenizer.GetNextToken()] = handler; - if (m_HandlersList.IndexOf(handler) == wxNOT_FOUND) - m_HandlersList.Append(handler); + m_HandlersSet.insert(handler); - handler -> SetParser(this); + handler->SetParser(this); } +void wxHtmlParser::PushTagHandler(wxHtmlTagHandler *handler, const wxString& tags) +{ + wxStringTokenizer tokenizer(tags, wxT(", ")); + wxString key; + m_HandlersStack.push_back(new wxHtmlTagHandlersHash(m_HandlersHash)); -wxHtmlParser::~wxHtmlParser() + while (tokenizer.HasMoreTokens()) + { + key = tokenizer.GetNextToken(); + m_HandlersHash[key] = handler; + } +} + +void wxHtmlParser::PopTagHandler() +{ + wxCHECK_RET( !m_HandlersStack.empty(), + "attempt to remove HTML tag handler from empty stack" ); + + wxHtmlTagHandlersHash *prev = m_HandlersStack.back(); + m_HandlersStack.pop_back(); + m_HandlersHash = *prev; + delete prev; +} + +void wxHtmlParser::SetSourceAndSaveState(const wxString& src) { - m_HandlersHash.Clear(); - m_HandlersList.DeleteContents(TRUE); - m_HandlersList.Clear(); + wxHtmlParserState *s = new wxHtmlParserState; + + s->m_curTag = m_CurTag; + s->m_tags = m_Tags; + s->m_textPieces = m_TextPieces; + s->m_curTextPiece = m_CurTextPiece; + s->m_source = m_Source; + + s->m_nextState = m_SavedStates; + m_SavedStates = s; + + m_CurTag = NULL; + m_Tags = NULL; + m_TextPieces = NULL; + m_CurTextPiece = 0; + m_Source = NULL; + + SetSource(src); } +bool wxHtmlParser::RestoreState() +{ + if (!m_SavedStates) return false; + + DestroyDOMTree(); + delete m_Source; + + wxHtmlParserState *s = m_SavedStates; + m_SavedStates = s->m_nextState; + + m_CurTag = s->m_curTag; + m_Tags = s->m_tags; + m_TextPieces = s->m_textPieces; + m_CurTextPiece = s->m_curTextPiece; + m_Source = s->m_source; + + delete s; + return true; +} +wxString wxHtmlParser::GetInnerSource(const wxHtmlTag& tag) +{ + return wxString(tag.GetBeginIter(), tag.GetEndIter1()); +} //----------------------------------------------------------------------------- // wxHtmlTagHandler //----------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxHtmlTagHandler,wxObject) + +void wxHtmlTagHandler::ParseInnerSource(const wxString& source) +{ + // It is safe to temporarily change the source being parsed, + // provided we restore the state back after parsing + m_Parser->SetSourceAndSaveState(source); + m_Parser->DoParsing(); + m_Parser->RestoreState(); +} + + +//----------------------------------------------------------------------------- +// wxHtmlEntitiesParser +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxHtmlEntitiesParser,wxObject) + +wxHtmlEntitiesParser::wxHtmlEntitiesParser() +#if !wxUSE_UNICODE + : m_conv(NULL), m_encoding(wxFONTENCODING_SYSTEM) +#endif +{ +} + +wxHtmlEntitiesParser::~wxHtmlEntitiesParser() +{ +#if !wxUSE_UNICODE + delete m_conv; +#endif +} + +#if !wxUSE_UNICODE +void wxHtmlEntitiesParser::SetEncoding(wxFontEncoding encoding) +{ + if (encoding == m_encoding) + return; + + delete m_conv; + + m_encoding = encoding; + if (m_encoding == wxFONTENCODING_SYSTEM) + m_conv = NULL; + else + m_conv = new wxCSConv(wxFontMapper::GetEncodingName(m_encoding)); +} +#endif // !wxUSE_UNICODE + +wxString wxHtmlEntitiesParser::Parse(const wxString& input) const +{ + wxString output; + + const wxString::const_iterator end(input.end()); + wxString::const_iterator c(input.begin()); + wxString::const_iterator last(c); + + for ( ; c < end; ++c ) + { + if (*c == wxT('&')) + { + if ( output.empty() ) + output.reserve(input.length()); + + if (c - last > 0) + output.append(last, c); + if ( ++c == end ) + break; + + wxString entity; + const wxString::const_iterator ent_s = c; + wxChar entity_char; + + for ( ; c != end; ++c ) + { + wxChar ch = *c; + if ( !((ch >= wxT('a') && ch <= wxT('z')) || + (ch >= wxT('A') && ch <= wxT('Z')) || + (ch >= wxT('0') && ch <= wxT('9')) || + ch == wxT('_') || ch == wxT('#')) ) + break; + } + + entity.append(ent_s, c); + if (c == end || *c != wxT(';')) --c; + last = c+1; + entity_char = GetEntityChar(entity); + if (entity_char) + output << entity_char; + else + { + output.append(ent_s-1, c+1); + wxLogTrace(wxTRACE_HTML_DEBUG, + "Unrecognized HTML entity: '%s'", + entity); + } + } + } + if ( last == input.begin() ) // common case: no entity + return input; + if ( last != end ) + output.append(last, end); + return output; +} + +#if !wxUSE_UNICODE +wxChar wxHtmlEntitiesParser::GetCharForCode(unsigned code) const +{ + char buf[2]; + wchar_t wbuf[2]; + wbuf[0] = (wchar_t)code; + wbuf[1] = 0; + wxMBConv *conv = m_conv ? m_conv : &wxConvLocal; + if (conv->WC2MB(buf, wbuf, 2) == (size_t)-1) + return '?'; + return buf[0]; +} #endif +struct wxHtmlEntityInfo +{ + const wxStringCharType *name; + unsigned code; +}; + +extern "C" int LINKAGEMODE wxHtmlEntityCompare(const void *key, const void *item) +{ +#if wxUSE_UNICODE_UTF8 + return strcmp((char*)key, ((wxHtmlEntityInfo*)item)->name); +#else + return wxStrcmp((wxChar*)key, ((wxHtmlEntityInfo*)item)->name); +#endif +} + +wxChar wxHtmlEntitiesParser::GetEntityChar(const wxString& entity) const +{ + unsigned code = 0; + + if (entity.empty()) + return 0; // invalid entity reference + + if (entity[0] == wxT('#')) + { + // NB: parsed value is a number, so it's OK to use wx_str(), internal + // representation is the same for numbers + const wxStringCharType *ent_s = entity.wx_str(); + const wxStringCharType *format; + + if (ent_s[1] == wxS('x') || ent_s[1] == wxS('X')) + { + format = wxS("%x"); + ent_s++; + } + else + format = wxS("%u"); + ent_s++; + + if (wxSscanf(ent_s, format, &code) != 1) + code = 0; + } + else + { + // store the literals in wx's internal representation (either char* + // in UTF-8 or wchar_t*) for best performance: + #define ENTITY(name, code) { wxS(name), code } + + static wxHtmlEntityInfo substitutions[] = { + ENTITY("AElig", 198), + ENTITY("Aacute", 193), + ENTITY("Acirc", 194), + ENTITY("Agrave", 192), + ENTITY("Alpha", 913), + ENTITY("Aring", 197), + ENTITY("Atilde", 195), + ENTITY("Auml", 196), + ENTITY("Beta", 914), + ENTITY("Ccedil", 199), + ENTITY("Chi", 935), + ENTITY("Dagger", 8225), + ENTITY("Delta", 916), + ENTITY("ETH", 208), + ENTITY("Eacute", 201), + ENTITY("Ecirc", 202), + ENTITY("Egrave", 200), + ENTITY("Epsilon", 917), + ENTITY("Eta", 919), + ENTITY("Euml", 203), + ENTITY("Gamma", 915), + ENTITY("Iacute", 205), + ENTITY("Icirc", 206), + ENTITY("Igrave", 204), + ENTITY("Iota", 921), + ENTITY("Iuml", 207), + ENTITY("Kappa", 922), + ENTITY("Lambda", 923), + ENTITY("Mu", 924), + ENTITY("Ntilde", 209), + ENTITY("Nu", 925), + ENTITY("OElig", 338), + ENTITY("Oacute", 211), + ENTITY("Ocirc", 212), + ENTITY("Ograve", 210), + ENTITY("Omega", 937), + ENTITY("Omicron", 927), + ENTITY("Oslash", 216), + ENTITY("Otilde", 213), + ENTITY("Ouml", 214), + ENTITY("Phi", 934), + ENTITY("Pi", 928), + ENTITY("Prime", 8243), + ENTITY("Psi", 936), + ENTITY("Rho", 929), + ENTITY("Scaron", 352), + ENTITY("Sigma", 931), + ENTITY("THORN", 222), + ENTITY("Tau", 932), + ENTITY("Theta", 920), + ENTITY("Uacute", 218), + ENTITY("Ucirc", 219), + ENTITY("Ugrave", 217), + ENTITY("Upsilon", 933), + ENTITY("Uuml", 220), + ENTITY("Xi", 926), + ENTITY("Yacute", 221), + ENTITY("Yuml", 376), + ENTITY("Zeta", 918), + ENTITY("aacute", 225), + ENTITY("acirc", 226), + ENTITY("acute", 180), + ENTITY("aelig", 230), + ENTITY("agrave", 224), + ENTITY("alefsym", 8501), + ENTITY("alpha", 945), + ENTITY("amp", 38), + ENTITY("and", 8743), + ENTITY("ang", 8736), + ENTITY("apos", 39), + ENTITY("aring", 229), + ENTITY("asymp", 8776), + ENTITY("atilde", 227), + ENTITY("auml", 228), + ENTITY("bdquo", 8222), + ENTITY("beta", 946), + ENTITY("brvbar", 166), + ENTITY("bull", 8226), + ENTITY("cap", 8745), + ENTITY("ccedil", 231), + ENTITY("cedil", 184), + ENTITY("cent", 162), + ENTITY("chi", 967), + ENTITY("circ", 710), + ENTITY("clubs", 9827), + ENTITY("cong", 8773), + ENTITY("copy", 169), + ENTITY("crarr", 8629), + ENTITY("cup", 8746), + ENTITY("curren", 164), + ENTITY("dArr", 8659), + ENTITY("dagger", 8224), + ENTITY("darr", 8595), + ENTITY("deg", 176), + ENTITY("delta", 948), + ENTITY("diams", 9830), + ENTITY("divide", 247), + ENTITY("eacute", 233), + ENTITY("ecirc", 234), + ENTITY("egrave", 232), + ENTITY("empty", 8709), + ENTITY("emsp", 8195), + ENTITY("ensp", 8194), + ENTITY("epsilon", 949), + ENTITY("equiv", 8801), + ENTITY("eta", 951), + ENTITY("eth", 240), + ENTITY("euml", 235), + ENTITY("euro", 8364), + ENTITY("exist", 8707), + ENTITY("fnof", 402), + ENTITY("forall", 8704), + ENTITY("frac12", 189), + ENTITY("frac14", 188), + ENTITY("frac34", 190), + ENTITY("frasl", 8260), + ENTITY("gamma", 947), + ENTITY("ge", 8805), + ENTITY("gt", 62), + ENTITY("hArr", 8660), + ENTITY("harr", 8596), + ENTITY("hearts", 9829), + ENTITY("hellip", 8230), + ENTITY("iacute", 237), + ENTITY("icirc", 238), + ENTITY("iexcl", 161), + ENTITY("igrave", 236), + ENTITY("image", 8465), + ENTITY("infin", 8734), + ENTITY("int", 8747), + ENTITY("iota", 953), + ENTITY("iquest", 191), + ENTITY("isin", 8712), + ENTITY("iuml", 239), + ENTITY("kappa", 954), + ENTITY("lArr", 8656), + ENTITY("lambda", 955), + ENTITY("lang", 9001), + ENTITY("laquo", 171), + ENTITY("larr", 8592), + ENTITY("lceil", 8968), + ENTITY("ldquo", 8220), + ENTITY("le", 8804), + ENTITY("lfloor", 8970), + ENTITY("lowast", 8727), + ENTITY("loz", 9674), + ENTITY("lrm", 8206), + ENTITY("lsaquo", 8249), + ENTITY("lsquo", 8216), + ENTITY("lt", 60), + ENTITY("macr", 175), + ENTITY("mdash", 8212), + ENTITY("micro", 181), + ENTITY("middot", 183), + ENTITY("minus", 8722), + ENTITY("mu", 956), + ENTITY("nabla", 8711), + ENTITY("nbsp", 160), + ENTITY("ndash", 8211), + ENTITY("ne", 8800), + ENTITY("ni", 8715), + ENTITY("not", 172), + ENTITY("notin", 8713), + ENTITY("nsub", 8836), + ENTITY("ntilde", 241), + ENTITY("nu", 957), + ENTITY("oacute", 243), + ENTITY("ocirc", 244), + ENTITY("oelig", 339), + ENTITY("ograve", 242), + ENTITY("oline", 8254), + ENTITY("omega", 969), + ENTITY("omicron", 959), + ENTITY("oplus", 8853), + ENTITY("or", 8744), + ENTITY("ordf", 170), + ENTITY("ordm", 186), + ENTITY("oslash", 248), + ENTITY("otilde", 245), + ENTITY("otimes", 8855), + ENTITY("ouml", 246), + ENTITY("para", 182), + ENTITY("part", 8706), + ENTITY("permil", 8240), + ENTITY("perp", 8869), + ENTITY("phi", 966), + ENTITY("pi", 960), + ENTITY("piv", 982), + ENTITY("plusmn", 177), + ENTITY("pound", 163), + ENTITY("prime", 8242), + ENTITY("prod", 8719), + ENTITY("prop", 8733), + ENTITY("psi", 968), + ENTITY("quot", 34), + ENTITY("rArr", 8658), + ENTITY("radic", 8730), + ENTITY("rang", 9002), + ENTITY("raquo", 187), + ENTITY("rarr", 8594), + ENTITY("rceil", 8969), + ENTITY("rdquo", 8221), + ENTITY("real", 8476), + ENTITY("reg", 174), + ENTITY("rfloor", 8971), + ENTITY("rho", 961), + ENTITY("rlm", 8207), + ENTITY("rsaquo", 8250), + ENTITY("rsquo", 8217), + ENTITY("sbquo", 8218), + ENTITY("scaron", 353), + ENTITY("sdot", 8901), + ENTITY("sect", 167), + ENTITY("shy", 173), + ENTITY("sigma", 963), + ENTITY("sigmaf", 962), + ENTITY("sim", 8764), + ENTITY("spades", 9824), + ENTITY("sub", 8834), + ENTITY("sube", 8838), + ENTITY("sum", 8721), + ENTITY("sup", 8835), + ENTITY("sup1", 185), + ENTITY("sup2", 178), + ENTITY("sup3", 179), + ENTITY("supe", 8839), + ENTITY("szlig", 223), + ENTITY("tau", 964), + ENTITY("there4", 8756), + ENTITY("theta", 952), + ENTITY("thetasym", 977), + ENTITY("thinsp", 8201), + ENTITY("thorn", 254), + ENTITY("tilde", 732), + ENTITY("times", 215), + ENTITY("trade", 8482), + ENTITY("uArr", 8657), + ENTITY("uacute", 250), + ENTITY("uarr", 8593), + ENTITY("ucirc", 251), + ENTITY("ugrave", 249), + ENTITY("uml", 168), + ENTITY("upsih", 978), + ENTITY("upsilon", 965), + ENTITY("uuml", 252), + ENTITY("weierp", 8472), + ENTITY("xi", 958), + ENTITY("yacute", 253), + ENTITY("yen", 165), + ENTITY("yuml", 255), + ENTITY("zeta", 950), + ENTITY("zwj", 8205), + ENTITY("zwnj", 8204), + {NULL, 0}}; + #undef ENTITY + static size_t substitutions_cnt = 0; + + if (substitutions_cnt == 0) + while (substitutions[substitutions_cnt].code != 0) + substitutions_cnt++; + + wxHtmlEntityInfo *info; +#ifdef __WXWINCE__ + // bsearch crashes under WinCE for some reason + info = NULL; + size_t i; + for (i = 0; i < substitutions_cnt; i++) + { + if (entity == substitutions[i].name) + { + info = & substitutions[i]; + break; + } + } +#else + info = (wxHtmlEntityInfo*) bsearch(entity.wx_str(), substitutions, + substitutions_cnt, + sizeof(wxHtmlEntityInfo), + wxHtmlEntityCompare); +#endif + if (info) + code = info->code; + } + + if (code == 0) + return 0; + else + return GetCharForCode(code); +} + +wxFSFile *wxHtmlParser::OpenURL(wxHtmlURLType type, + const wxString& url) const +{ + int flags = wxFS_READ; + if (type == wxHTML_URL_IMAGE) + flags |= wxFS_SEEKABLE; + + return m_FS ? m_FS->OpenFile(url, flags) : NULL; + +} + + +//----------------------------------------------------------------------------- +// wxHtmlParser::ExtractCharsetInformation +//----------------------------------------------------------------------------- + +class wxMetaTagParser : public wxHtmlParser +{ +public: + wxMetaTagParser() { } + + wxObject* GetProduct() { return NULL; } + +protected: + virtual void AddText(const wxString& WXUNUSED(txt)) {} + + wxDECLARE_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; + + wxDECLARE_NO_COPY_CLASS(wxMetaTagHandler); +}; + +bool wxMetaTagHandler::HandleTag(const wxHtmlTag& tag) +{ + if (tag.GetName() == wxT("BODY")) + { + m_Parser->StopParsing(); + return false; + } + + if (tag.HasParam(wxT("HTTP-EQUIV")) && + tag.GetParam(wxT("HTTP-EQUIV")).IsSameAs(wxT("Content-Type"), false) && + tag.HasParam(wxT("CONTENT"))) + { + wxString content = tag.GetParam(wxT("CONTENT")).Lower(); + if (content.Left(19) == wxT("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; +} + +/* static */ +bool +wxHtmlParser::SkipCommentTag(wxString::const_iterator& start, + wxString::const_iterator end) +{ + wxASSERT_MSG( *start == '<', wxT("should be called on the tag start") ); + + wxString::const_iterator p = start; + + // comments begin with "