+/////////////////////////////////////////////////////////////////////////////
+// Name: src/html/htmlpars.cpp
+// Purpose: wx28HtmlParser class (generic parser)
+// Author: Vaclav Slavik
+// RCS-ID: $Id$
+// Copyright: (c) 1999 Vaclav Slavik
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#include "htmlpars.h"
+
+#ifndef WXPRECOMP
+ #include "wx/dynarray.h"
+ #include "wx/log.h"
+ #include "wx/intl.h"
+ #include "wx/app.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/arrimpl.cpp"
+
+#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 = _T("htmldebug");
+
+//-----------------------------------------------------------------------------
+// wx28HtmlParser helpers
+//-----------------------------------------------------------------------------
+
+class wx28HtmlTextPiece
+{
+public:
+ wx28HtmlTextPiece(int pos, int lng) : m_pos(pos), m_lng(lng) {}
+ int m_pos, m_lng;
+};
+
+WX_DECLARE_OBJARRAY(wx28HtmlTextPiece, wx28HtmlTextPieces);
+WX_DEFINE_OBJARRAY(wx28HtmlTextPieces)
+
+class wx28HtmlParserState
+{
+public:
+ wx28HtmlTag *m_curTag;
+ wx28HtmlTag *m_tags;
+ wx28HtmlTextPieces *m_textPieces;
+ int m_curTextPiece;
+ wxString m_source;
+ wx28HtmlParserState *m_nextState;
+};
+
+//-----------------------------------------------------------------------------
+// wx28HtmlParser
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wx28HtmlParser,wxObject)
+
+wx28HtmlParser::wx28HtmlParser()
+ : wxObject(), m_HandlersHash(wxKEY_STRING),
+ m_FS(NULL), m_HandlersStack(NULL)
+{
+ m_entitiesParser = new wx28HtmlEntitiesParser;
+ m_Tags = NULL;
+ m_CurTag = NULL;
+ m_TextPieces = NULL;
+ m_CurTextPiece = 0;
+ m_SavedStates = NULL;
+}
+
+wx28HtmlParser::~wx28HtmlParser()
+{
+ 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();
+ WX_CLEAR_LIST(wxList, m_HandlersList);
+ delete m_entitiesParser;
+}
+
+wxObject* wx28HtmlParser::Parse(const wxString& source)
+{
+ InitParser(source);
+ DoParsing();
+ wxObject *result = GetProduct();
+ DoneParser();
+ return result;
+}
+
+void wx28HtmlParser::InitParser(const wxString& source)
+{
+ SetSource(source);
+ m_stopParsing = false;
+}
+
+void wx28HtmlParser::DoneParser()
+{
+ DestroyDOMTree();
+}
+
+void wx28HtmlParser::SetSource(const wxString& src)
+{
+ DestroyDOMTree();
+ m_Source = src;
+ CreateDOMTree();
+ m_CurTag = NULL;
+ m_CurTextPiece = 0;
+}
+
+void wx28HtmlParser::CreateDOMTree()
+{
+ wx28HtmlTagsCache cache(m_Source);
+ m_TextPieces = new wx28HtmlTextPieces;
+ CreateDOMSubTree(NULL, 0, m_Source.length(), &cache);
+ m_CurTextPiece = 0;
+}
+
+extern bool wxIsCDATAElement(const wxChar *tag);
+
+void wx28HtmlParser::CreateDOMSubTree(wx28HtmlTag *cur,
+ int begin_pos, int end_pos,
+ wx28HtmlTagsCache *cache)
+{
+ if (end_pos <= begin_pos) return;
+
+ wxChar c;
+ 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);
+
+ if (c == wxT('<'))
+ {
+ // add text to m_TextPieces:
+ if (i - textBeginning > 0)
+ m_TextPieces->Add(
+ wx28HtmlTextPiece(textBeginning, i - textBeginning));
+
+ // if it is a comment, skip it:
+ if (i < end_pos-6 && m_Source.GetChar(i+1) == wxT('!') &&
+ m_Source.GetChar(i+2) == wxT('-') &&
+ m_Source.GetChar(i+3) == wxT('-'))
+ {
+ // Comments begin with "<!--" and end with "--[ \t\r\n]*>"
+ // according to HTML 4.0
+ int dashes = 0;
+ i += 4;
+ while (i < end_pos)
+ {
+ c = m_Source.GetChar(i++);
+ if ((c == wxT(' ') || c == wxT('\n') ||
+ c == wxT('\r') || c == wxT('\t')) && dashes >= 2) {}
+ else if (c == wxT('>') && dashes >= 2)
+ {
+ textBeginning = i;
+ break;
+ }
+ else if (c == wxT('-'))
+ dashes++;
+ else
+ dashes = 0;
+ }
+ }
+
+ // add another tag to the tree:
+ else if (i < end_pos-1 && m_Source.GetChar(i+1) != wxT('/'))
+ {
+ wx28HtmlTag *chd;
+ if (cur)
+ chd = new wx28HtmlTag(cur, m_Source,
+ i, end_pos, cache, m_entitiesParser);
+ else
+ {
+ chd = new wx28HtmlTag(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->GetBeginPos(), chd->GetEndPos1(),
+ cache);
+ i = chd->GetEndPos2();
+ }
+ else
+ i = chd->GetBeginPos();
+
+ textBeginning = i;
+ }
+
+ // ... or skip ending tag:
+ else
+ {
+ while (i < end_pos && m_Source.GetChar(i) != wxT('>')) i++;
+ textBeginning = i+1;
+ }
+ }
+ else i++;
+ }
+
+ // add remaining text to m_TextPieces:
+ if (end_pos - textBeginning > 0)
+ m_TextPieces->Add(
+ wx28HtmlTextPiece(textBeginning, end_pos - textBeginning));
+}
+
+void wx28HtmlParser::DestroyDOMTree()
+{
+ wx28HtmlTag *t1, *t2;
+ t1 = m_Tags;
+ while (t1)
+ {
+ t2 = t1->GetNextSibling();
+ delete t1;
+ t1 = t2;
+ }
+ m_Tags = m_CurTag = NULL;
+
+ delete m_TextPieces;
+ m_TextPieces = NULL;
+}
+
+void wx28HtmlParser::DoParsing()
+{
+ m_CurTag = m_Tags;
+ m_CurTextPiece = 0;
+ DoParsing(0, m_Source.length());
+}
+
+void wx28HtmlParser::DoParsing(int begin_pos, int end_pos)
+{
+ if (end_pos <= begin_pos) return;
+
+ wx28HtmlTextPieces& pieces = *m_TextPieces;
+ size_t piecesCnt = pieces.GetCount();
+
+ while (begin_pos < end_pos)
+ {
+ while (m_CurTag && m_CurTag->GetBeginPos() < begin_pos)
+ m_CurTag = m_CurTag->GetNextTag();
+ while (m_CurTextPiece < piecesCnt &&
+ pieces[m_CurTextPiece].m_pos < begin_pos)
+ m_CurTextPiece++;
+
+ if (m_CurTextPiece < piecesCnt &&
+ (!m_CurTag ||
+ pieces[m_CurTextPiece].m_pos < m_CurTag->GetBeginPos()))
+ {
+ // Add text:
+ 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)
+ {
+ if (m_CurTag->HasEnding())
+ begin_pos = m_CurTag->GetEndPos2();
+ else
+ begin_pos = m_CurTag->GetBeginPos();
+ wx28HtmlTag *t = m_CurTag;
+ m_CurTag = m_CurTag->GetNextTag();
+ AddTag(*t);
+ if (m_stopParsing)
+ return;
+ }
+ else break;
+ }
+}
+
+void wx28HtmlParser::AddTag(const wx28HtmlTag& tag)
+{
+ wx28HtmlTagHandler *h;
+ bool inner = false;
+
+ h = (wx28HtmlTagHandler*) m_HandlersHash.Get(tag.GetName());
+ if (h)
+ {
+ inner = h->HandleTag(tag);
+ if (m_stopParsing)
+ return;
+ }
+ if (!inner)
+ {
+ if (tag.HasEnding())
+ DoParsing(tag.GetBeginPos(), tag.GetEndPos1());
+ }
+}
+
+void wx28HtmlParser::AddTagHandler(wx28HtmlTagHandler *handler)
+{
+ wxString s(handler->GetSupportedTags());
+ wxStringTokenizer tokenizer(s, wxT(", "));
+
+ while (tokenizer.HasMoreTokens())
+ m_HandlersHash.Put(tokenizer.GetNextToken(), handler);
+
+ if (m_HandlersList.IndexOf(handler) == wxNOT_FOUND)
+ m_HandlersList.Append(handler);
+
+ handler->SetParser(this);
+}
+
+void wx28HtmlParser::PushTagHandler(wx28HtmlTagHandler *handler, const wxString& tags)
+{
+ wxStringTokenizer tokenizer(tags, wxT(", "));
+ wxString key;
+
+ if (m_HandlersStack == NULL)
+ {
+ m_HandlersStack = new wxList;
+ }
+
+ m_HandlersStack->Insert((wxObject*)new wxHashTable(m_HandlersHash));
+
+ while (tokenizer.HasMoreTokens())
+ {
+ key = tokenizer.GetNextToken();
+ m_HandlersHash.Delete(key);
+ m_HandlersHash.Put(key, handler);
+ }
+}
+
+void wx28HtmlParser::PopTagHandler()
+{
+ 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());
+ delete (wxHashTable*) first->GetData();
+ m_HandlersStack->Erase(first);
+}
+
+void wx28HtmlParser::SetSourceAndSaveState(const wxString& src)
+{
+ wx28HtmlParserState *s = new wx28HtmlParserState;
+
+ 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 = wxEmptyString;
+
+ SetSource(src);
+}
+
+bool wx28HtmlParser::RestoreState()
+{
+ if (!m_SavedStates) return false;
+
+ DestroyDOMTree();
+
+ wx28HtmlParserState *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 wx28HtmlParser::GetInnerSource(const wx28HtmlTag& tag)
+{
+ return GetSource()->Mid(tag.GetBeginPos(),
+ tag.GetEndPos1() - tag.GetBeginPos());
+}
+
+//-----------------------------------------------------------------------------
+// wx28HtmlTagHandler
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wx28HtmlTagHandler,wxObject)
+
+void wx28HtmlTagHandler::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();
+}
+
+
+//-----------------------------------------------------------------------------
+// wx28HtmlEntitiesParser
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wx28HtmlEntitiesParser,wxObject)
+
+wx28HtmlEntitiesParser::wx28HtmlEntitiesParser()
+#if wxUSE_WCHAR_T && !wxUSE_UNICODE
+ : m_conv(NULL), m_encoding(wxFONTENCODING_SYSTEM)
+#endif
+{
+}
+
+wx28HtmlEntitiesParser::~wx28HtmlEntitiesParser()
+{
+#if wxUSE_WCHAR_T && !wxUSE_UNICODE
+ delete m_conv;
+#endif
+}
+
+void wx28HtmlEntitiesParser::SetEncoding(wxFontEncoding encoding)
+{
+#if wxUSE_WCHAR_T && !wxUSE_UNICODE
+ 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));
+#else
+ (void) encoding;
+#endif
+}
+
+wxString wx28HtmlEntitiesParser::Parse(const wxString& input)
+{
+ const wxChar *c, *last;
+ const wxChar *in_str = input.c_str();
+ wxString output;
+
+ for (c = in_str, last = in_str; *c != wxT('\0'); c++)
+ {
+ if (*c == wxT('&'))
+ {
+ if ( output.empty() )
+ output.reserve(input.length());
+
+ 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')) ||
+ *c == wxT('_') || *c == wxT('#'); c++) {}
+ entity.append(ent_s, c - ent_s);
+ if (*c != wxT(';')) c--;
+ last = c+1;
+ 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 == in_str) // common case: no entity
+ return input;
+ if (*last != wxT('\0'))
+ output.append(last);
+ return output;
+}
+
+struct wx28HtmlEntityInfo
+{
+ const wxChar *name;
+ unsigned code;
+};
+
+extern "C" int LINKAGEMODE wx28HtmlEntityCompare(const void *key, const void *item)
+{
+ return wxStrcmp((wxChar*)key, ((wx28HtmlEntityInfo*)item)->name);
+}
+
+#if !wxUSE_UNICODE
+wxChar wx28HtmlEntitiesParser::GetCharForCode(unsigned code)
+{
+#if wxUSE_WCHAR_T
+ 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];
+#else
+ return (code < 256) ? (wxChar)code : '?';
+#endif
+}
+#endif
+
+wxChar wx28HtmlEntitiesParser::GetEntityChar(const wxString& entity)
+{
+ unsigned code = 0;
+
+ if (entity[0] == wxT('#'))
+ {
+ const wxChar *ent_s = entity.c_str();
+ const wxChar *format;
+
+ if (ent_s[1] == wxT('x') || ent_s[1] == wxT('X'))
+ {
+ format = wxT("%x");
+ ent_s++;
+ }
+ else
+ format = wxT("%u");
+ ent_s++;
+
+ if (wxSscanf(ent_s, format, &code) != 1)
+ code = 0;
+ }
+ else
+ {
+ static wx28HtmlEntityInfo substitutions[] = {
+ { wxT("AElig"),198 },
+ { wxT("Aacute"),193 },
+ { wxT("Acirc"),194 },
+ { wxT("Agrave"),192 },
+ { wxT("Alpha"),913 },
+ { wxT("Aring"),197 },
+ { wxT("Atilde"),195 },
+ { wxT("Auml"),196 },
+ { wxT("Beta"),914 },
+ { wxT("Ccedil"),199 },
+ { wxT("Chi"),935 },
+ { wxT("Dagger"),8225 },
+ { wxT("Delta"),916 },
+ { wxT("ETH"),208 },
+ { wxT("Eacute"),201 },
+ { wxT("Ecirc"),202 },
+ { wxT("Egrave"),200 },
+ { wxT("Epsilon"),917 },
+ { wxT("Eta"),919 },
+ { wxT("Euml"),203 },
+ { wxT("Gamma"),915 },
+ { wxT("Iacute"),205 },
+ { wxT("Icirc"),206 },
+ { wxT("Igrave"),204 },
+ { wxT("Iota"),921 },
+ { wxT("Iuml"),207 },
+ { wxT("Kappa"),922 },
+ { wxT("Lambda"),923 },
+ { wxT("Mu"),924 },
+ { wxT("Ntilde"),209 },
+ { wxT("Nu"),925 },
+ { wxT("OElig"),338 },
+ { wxT("Oacute"),211 },
+ { wxT("Ocirc"),212 },
+ { wxT("Ograve"),210 },
+ { wxT("Omega"),937 },
+ { wxT("Omicron"),927 },
+ { wxT("Oslash"),216 },
+ { wxT("Otilde"),213 },
+ { wxT("Ouml"),214 },
+ { wxT("Phi"),934 },
+ { wxT("Pi"),928 },
+ { wxT("Prime"),8243 },
+ { wxT("Psi"),936 },
+ { wxT("Rho"),929 },
+ { wxT("Scaron"),352 },
+ { wxT("Sigma"),931 },
+ { wxT("THORN"),222 },
+ { wxT("Tau"),932 },
+ { wxT("Theta"),920 },
+ { wxT("Uacute"),218 },
+ { wxT("Ucirc"),219 },
+ { wxT("Ugrave"),217 },
+ { wxT("Upsilon"),933 },
+ { wxT("Uuml"),220 },
+ { wxT("Xi"),926 },
+ { wxT("Yacute"),221 },
+ { wxT("Yuml"),376 },
+ { wxT("Zeta"),918 },
+ { wxT("aacute"),225 },
+ { wxT("acirc"),226 },
+ { wxT("acute"),180 },
+ { wxT("aelig"),230 },
+ { wxT("agrave"),224 },
+ { wxT("alefsym"),8501 },
+ { wxT("alpha"),945 },
+ { wxT("amp"),38 },
+ { wxT("and"),8743 },
+ { wxT("ang"),8736 },
+ { wxT("aring"),229 },
+ { wxT("asymp"),8776 },
+ { wxT("atilde"),227 },
+ { wxT("auml"),228 },
+ { wxT("bdquo"),8222 },
+ { wxT("beta"),946 },
+ { wxT("brvbar"),166 },
+ { wxT("bull"),8226 },
+ { wxT("cap"),8745 },
+ { wxT("ccedil"),231 },
+ { wxT("cedil"),184 },
+ { wxT("cent"),162 },
+ { wxT("chi"),967 },
+ { wxT("circ"),710 },
+ { wxT("clubs"),9827 },
+ { wxT("cong"),8773 },
+ { wxT("copy"),169 },
+ { wxT("crarr"),8629 },
+ { wxT("cup"),8746 },
+ { wxT("curren"),164 },
+ { wxT("dArr"),8659 },
+ { wxT("dagger"),8224 },
+ { wxT("darr"),8595 },
+ { wxT("deg"),176 },
+ { wxT("delta"),948 },
+ { wxT("diams"),9830 },
+ { wxT("divide"),247 },
+ { wxT("eacute"),233 },
+ { wxT("ecirc"),234 },
+ { wxT("egrave"),232 },
+ { wxT("empty"),8709 },
+ { wxT("emsp"),8195 },
+ { wxT("ensp"),8194 },
+ { wxT("epsilon"),949 },
+ { wxT("equiv"),8801 },
+ { wxT("eta"),951 },
+ { wxT("eth"),240 },
+ { wxT("euml"),235 },
+ { wxT("euro"),8364 },
+ { wxT("exist"),8707 },
+ { wxT("fnof"),402 },
+ { wxT("forall"),8704 },
+ { wxT("frac12"),189 },
+ { wxT("frac14"),188 },
+ { wxT("frac34"),190 },
+ { wxT("frasl"),8260 },
+ { wxT("gamma"),947 },
+ { wxT("ge"),8805 },
+ { wxT("gt"),62 },
+ { wxT("hArr"),8660 },
+ { wxT("harr"),8596 },
+ { wxT("hearts"),9829 },
+ { wxT("hellip"),8230 },
+ { wxT("iacute"),237 },
+ { wxT("icirc"),238 },
+ { wxT("iexcl"),161 },
+ { wxT("igrave"),236 },
+ { wxT("image"),8465 },
+ { wxT("infin"),8734 },
+ { wxT("int"),8747 },
+ { wxT("iota"),953 },
+ { wxT("iquest"),191 },
+ { wxT("isin"),8712 },
+ { wxT("iuml"),239 },
+ { wxT("kappa"),954 },
+ { wxT("lArr"),8656 },
+ { wxT("lambda"),955 },
+ { wxT("lang"),9001 },
+ { wxT("laquo"),171 },
+ { wxT("larr"),8592 },
+ { wxT("lceil"),8968 },
+ { wxT("ldquo"),8220 },
+ { wxT("le"),8804 },
+ { wxT("lfloor"),8970 },
+ { wxT("lowast"),8727 },
+ { wxT("loz"),9674 },
+ { wxT("lrm"),8206 },
+ { wxT("lsaquo"),8249 },
+ { wxT("lsquo"),8216 },
+ { wxT("lt"),60 },
+ { wxT("macr"),175 },
+ { wxT("mdash"),8212 },
+ { wxT("micro"),181 },
+ { wxT("middot"),183 },
+ { wxT("minus"),8722 },
+ { wxT("mu"),956 },
+ { wxT("nabla"),8711 },
+ { wxT("nbsp"),160 },
+ { wxT("ndash"),8211 },
+ { wxT("ne"),8800 },
+ { wxT("ni"),8715 },
+ { wxT("not"),172 },
+ { wxT("notin"),8713 },
+ { wxT("nsub"),8836 },
+ { wxT("ntilde"),241 },
+ { wxT("nu"),957 },
+ { wxT("oacute"),243 },
+ { wxT("ocirc"),244 },
+ { wxT("oelig"),339 },
+ { wxT("ograve"),242 },
+ { wxT("oline"),8254 },
+ { wxT("omega"),969 },
+ { wxT("omicron"),959 },
+ { wxT("oplus"),8853 },
+ { wxT("or"),8744 },
+ { wxT("ordf"),170 },
+ { wxT("ordm"),186 },
+ { wxT("oslash"),248 },
+ { wxT("otilde"),245 },
+ { wxT("otimes"),8855 },
+ { wxT("ouml"),246 },
+ { wxT("para"),182 },
+ { wxT("part"),8706 },
+ { wxT("permil"),8240 },
+ { wxT("perp"),8869 },
+ { wxT("phi"),966 },
+ { wxT("pi"),960 },
+ { wxT("piv"),982 },
+ { wxT("plusmn"),177 },
+ { wxT("pound"),163 },
+ { wxT("prime"),8242 },
+ { wxT("prod"),8719 },
+ { wxT("prop"),8733 },
+ { wxT("psi"),968 },
+ { wxT("quot"),34 },
+ { wxT("rArr"),8658 },
+ { wxT("radic"),8730 },
+ { wxT("rang"),9002 },
+ { wxT("raquo"),187 },
+ { wxT("rarr"),8594 },
+ { wxT("rceil"),8969 },
+ { wxT("rdquo"),8221 },
+ { wxT("real"),8476 },
+ { wxT("reg"),174 },
+ { wxT("rfloor"),8971 },
+ { wxT("rho"),961 },
+ { wxT("rlm"),8207 },
+ { wxT("rsaquo"),8250 },
+ { wxT("rsquo"),8217 },
+ { wxT("sbquo"),8218 },
+ { wxT("scaron"),353 },
+ { wxT("sdot"),8901 },
+ { wxT("sect"),167 },
+ { wxT("shy"),173 },
+ { wxT("sigma"),963 },
+ { wxT("sigmaf"),962 },
+ { wxT("sim"),8764 },
+ { wxT("spades"),9824 },
+ { wxT("sub"),8834 },
+ { wxT("sube"),8838 },
+ { wxT("sum"),8721 },
+ { wxT("sup"),8835 },
+ { wxT("sup1"),185 },
+ { wxT("sup2"),178 },
+ { wxT("sup3"),179 },
+ { wxT("supe"),8839 },
+ { wxT("szlig"),223 },
+ { wxT("tau"),964 },
+ { wxT("there4"),8756 },
+ { wxT("theta"),952 },
+ { wxT("thetasym"),977 },
+ { wxT("thinsp"),8201 },
+ { wxT("thorn"),254 },
+ { wxT("tilde"),732 },
+ { wxT("times"),215 },
+ { wxT("trade"),8482 },
+ { wxT("uArr"),8657 },
+ { wxT("uacute"),250 },
+ { wxT("uarr"),8593 },
+ { wxT("ucirc"),251 },
+ { wxT("ugrave"),249 },
+ { wxT("uml"),168 },
+ { wxT("upsih"),978 },
+ { wxT("upsilon"),965 },
+ { wxT("uuml"),252 },
+ { wxT("weierp"),8472 },
+ { wxT("xi"),958 },
+ { wxT("yacute"),253 },
+ { wxT("yen"),165 },
+ { wxT("yuml"),255 },
+ { wxT("zeta"),950 },
+ { wxT("zwj"),8205 },
+ { wxT("zwnj"),8204 },
+ {NULL, 0}};
+ static size_t substitutions_cnt = 0;
+
+ if (substitutions_cnt == 0)
+ while (substitutions[substitutions_cnt].code != 0)
+ substitutions_cnt++;
+
+ wx28HtmlEntityInfo *info = NULL;
+#ifdef __WXWINCE__
+ // bsearch crashes under WinCE for some reason
+ size_t i;
+ for (i = 0; i < substitutions_cnt; i++)
+ {
+ if (entity == substitutions[i].name)
+ {
+ info = & substitutions[i];
+ break;
+ }
+ }
+#else
+ info = (wx28HtmlEntityInfo*) bsearch(entity.c_str(), substitutions,
+ substitutions_cnt,
+ sizeof(wx28HtmlEntityInfo),
+ wx28HtmlEntityCompare);
+#endif
+ if (info)
+ code = info->code;
+ }
+
+ if (code == 0)
+ return 0;
+ else
+ return GetCharForCode(code);
+}
+
+wxFSFile *wx28HtmlParser::OpenURL(wx28HtmlURLType WXUNUSED(type),
+ const wxString& url) const
+{
+ return m_FS ? m_FS->OpenFile(url) : NULL;
+
+}
+
+
+//-----------------------------------------------------------------------------
+// wx28HtmlParser::ExtractCharsetInformation
+//-----------------------------------------------------------------------------
+
+class wxMetaTagParser : public wx28HtmlParser
+{
+public:
+ wxMetaTagParser() { }
+
+ wxObject* GetProduct() { return NULL; }
+
+protected:
+ virtual void AddText(const wxChar* WXUNUSED(txt)) {}
+
+ DECLARE_NO_COPY_CLASS(wxMetaTagParser)
+};
+
+class wxMetaTagHandler : public wx28HtmlTagHandler
+{
+public:
+ wxMetaTagHandler(wxString *retval) : wx28HtmlTagHandler(), m_retval(retval) {}
+ wxString GetSupportedTags() { return wxT("META,BODY"); }
+ bool HandleTag(const wx28HtmlTag& tag);
+
+private:
+ wxString *m_retval;
+
+ DECLARE_NO_COPY_CLASS(wxMetaTagHandler)
+};
+
+bool wxMetaTagHandler::HandleTag(const wx28HtmlTag& 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 wx28HtmlParser::ExtractCharsetInformation(const wxString& markup)
+{
+ wxString charset;
+ wxMetaTagParser *parser = new wxMetaTagParser();
+ if(parser)
+ {
+ parser->AddTagHandler(new wxMetaTagHandler(&charset));
+ parser->Parse(markup);
+ delete parser;
+ }
+ return charset;
+}
projects / wxWidgets.git / commitdiff
