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wxWidgets/tests/benchmarks/htmlparser/htmlpars.cpp
Vadim Zeitlin 3f66f6a5b3 Remove all lines containing cvs/svn "$Id$" keyword. 
This keyword is not expanded by Git which means it's not replaced with the
correct revision value in the releases made using git-based scripts and it's
confusing to have lines with unexpanded "$Id$" in the released files. As
expanding them with Git is not that simple (it could be done with git archive
and export-subst attribute) and there are not many benefits in having them in
the first place, just remove all these lines.

If nothing else, this will make an eventual transition to Git simpler.

Closes #14487.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2013-07-26 16:02:46 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/html/htmlpars.cpp
// Purpose: wx28HtmlParser class (generic parser)
// Author: Vaclav Slavik
// 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 = wxT("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)).t_str());
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_UNICODE
: m_conv(NULL), m_encoding(wxFONTENCODING_SYSTEM)
#endif
{
}
wx28HtmlEntitiesParser::~wx28HtmlEntitiesParser()
{
#if !wxUSE_UNICODE
delete m_conv;
#endif
}
void wx28HtmlEntitiesParser::SetEncoding(wxFontEncoding encoding)
{
#if !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)
{
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
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() == 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 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;
}
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