/////////////////////////////////////////////////////////////////////////////
-// 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 "wx/wxprec.h"
-
-#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS
-#ifdef __BORDLANDC__
-#pragma hdrstop
-#endif
-
-#ifndef WXPRECOMP
-#include "wx/wx.h"
+#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<wxHtmlTextPiece>
+{
+};
+class wxHtmlParserState
+{
+public:
+ wxHtmlTag *m_curTag;
+ wxHtmlTag *m_tags;
+ wxHtmlTextPieces *m_textPieces;
+ int m_curTextPiece;
+ const wxString *m_source;
+ wxHtmlParserState *m_nextState;
+};
//-----------------------------------------------------------------------------
// wxHtmlParser
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;
+}
+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)
{
- if (end_pos <= begin_pos) return;
-
- char c;
- char *temp = new char[end_pos - begin_pos + 1];
- int i;
- int templen;
+ if (end_pos <= begin_pos)
+ return;
- templen = 0;
- i = begin_pos;
+ wxChar c;
+ wxString::const_iterator i = begin_pos;
+ wxString::const_iterator textBeginning = begin_pos;
- while (i < end_pos) {
- c = m_Source[(unsigned int) i];
+ // 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;
+ }
- // continue building word:
- if (c != '<') {
- temp[templen++] = c;
- i++;
- }
+ while (i < end_pos)
+ {
+ c = *i;
+
+ if (c == wxT('<'))
+ {
+ // add text to m_TextPieces:
+ if (i > textBeginning)
+ m_TextPieces->push_back(wxHtmlTextPiece(textBeginning, i));
+
+ // if it is a comment, skip it:
+ if ( SkipCommentTag(i, m_Source->end()) )
+ {
+ textBeginning = i = i + 1; // skip closing '>' too
+ }
- 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+1;
}
- 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;
}
- delete[] temp;
+ 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;
+ bool inner = false;
- h = (wxHtmlTagHandler*) m_HandlersHash.Get(tag.GetName());
- if (h)
- inner = h -> HandleTag(tag);
- if (!inner) {
+ 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, wxT(", "));
+ while (tokenizer.HasMoreTokens())
+ m_HandlersHash[tokenizer.GetNextToken()] = handler;
-void wxHtmlParser::AddTagHandler(wxHtmlTagHandler *handler)
+ m_HandlersSet.insert(handler);
+
+ handler->SetParser(this);
+}
+
+void wxHtmlParser::PushTagHandler(wxHtmlTagHandler *handler, const wxString& tags)
{
- wxString s(handler -> GetSupportedTags());
- wxStringTokenizer tokenizer(s, ", ");
+ wxStringTokenizer tokenizer(tags, wxT(", "));
+ wxString key;
+
+ m_HandlersStack.push_back(new wxHtmlTagHandlersHash(m_HandlersHash));
while (tokenizer.HasMoreTokens())
- m_HandlersHash.Put(tokenizer.NextToken(), handler);
+ {
+ key = tokenizer.GetNextToken();
+ m_HandlersHash[key] = handler;
+ }
+}
- if (m_HandlersList.IndexOf(handler) == wxNOT_FOUND)
- m_HandlersList.Append(handler);
+void wxHtmlParser::PopTagHandler()
+{
+ wxCHECK_RET( !m_HandlersStack.empty(),
+ "attempt to remove HTML tag handler from empty stack" );
- handler -> SetParser(this);
+ wxHtmlTagHandlersHash *prev = m_HandlersStack.back();
+ m_HandlersStack.pop_back();
+ m_HandlersHash = *prev;
+ delete prev;
}
+void wxHtmlParser::SetSourceAndSaveState(const wxString& src)
+{
+ 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);
+}
-void wxHtmlParser::PushTagHandler(wxHtmlTagHandler *handler, wxString tags)
+bool wxHtmlParser::RestoreState()
{
- wxStringTokenizer tokenizer(tags, ", ");
- wxString key;
+ if (!m_SavedStates) return false;
- if (m_HandlersStack == NULL) {
- m_HandlersStack = new wxList;
- m_HandlersStack -> DeleteContents(TRUE);
- }
+ DestroyDOMTree();
+ delete m_Source;
- m_HandlersStack -> Insert(new wxHashTable(m_HandlersHash));
+ wxHtmlParserState *s = m_SavedStates;
+ m_SavedStates = s->m_nextState;
- while (tokenizer.HasMoreTokens()) {
- key = tokenizer.NextToken();
- m_HandlersHash.Delete(key);
- m_HandlersHash.Put(key, handler);
- }
+ 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
+//-----------------------------------------------------------------------------
-void wxHtmlParser::PopTagHandler()
+IMPLEMENT_ABSTRACT_CLASS(wxHtmlTagHandler,wxObject)
+
+void wxHtmlTagHandler::ParseInnerSource(const wxString& source)
{
- wxNode *first;
-
- if (m_HandlersStack == NULL ||
- (first = m_HandlersStack -> GetFirst()) == NULL)
- {
- wxLogWarning(_("Warning: attempt to remove HTML tag handler from empty stack."));
+ // 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);
+ }
+ }
}
- m_HandlersHash = *((wxHashTable*) first -> GetData());
- m_HandlersStack -> DeleteNode(first);
+ 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;
+};
-wxHtmlParser::~wxHtmlParser()
+extern "C" int LINKAGEMODE wxHtmlEntityCompare(const void *key, const void *item)
{
- if (m_HandlersStack) delete m_HandlersStack;
- m_HandlersHash.Clear();
- m_HandlersList.DeleteContents(TRUE);
- m_HandlersList.Clear();
+#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;
+
+}
//-----------------------------------------------------------------------------
-// wxHtmlTagHandler
+// wxHtmlParser::ExtractCharsetInformation
//-----------------------------------------------------------------------------
-IMPLEMENT_ABSTRACT_CLASS(wxHtmlTagHandler,wxObject)
-#endif
+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 "<!--" in HTML 4.0
+ if ( p > end - 3 || *++p != '!' || *++p != '-' || *++p != '-' )
+ {
+ // not a comment at all
+ 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
+ start = p;
+
+ // comments end with "--[ \t\r\n]*>", i.e. white space is allowed between
+ // comment delimiter and the closing tag character (section 3.2.4 of
+ // http://www.w3.org/TR/html401/)
+ int dashes = 0;
+ while ( ++p < end )
+ {
+ const wxChar c = *p;
+
+ if ( (c == wxT(' ') || c == wxT('\n') ||
+ c == wxT('\r') || c == wxT('\t')) && dashes >= 2 )
+ {
+ // ignore white space before potential tag end
+ continue;
+ }
+
+ if ( c == wxT('>') && dashes >= 2 )
+ {
+ // found end of comment
+ start = p;
+ break;
+ }
+
+ if ( c == wxT('-') )
+ dashes++;
+ else
+ dashes = 0;
+ }
+
+ return true;
+}
+#endif // wxUSE_HTML
projects / wxWidgets.git / blobdiff