X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7c6cd4a86b843afa877feaeb207b936dd7a4b1f3..b85b06e13d22e7fc1604ec1a49caa1227a1b3d36:/src/html/htmltag.cpp diff --git a/src/html/htmltag.cpp b/src/html/htmltag.cpp index e8d244a2ee..0ad22af893 100644 --- a/src/html/htmltag.cpp +++ b/src/html/htmltag.cpp @@ -1,36 +1,33 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: htmltag.cpp +// Name: src/html/htmltag.cpp // Purpose: wxHtmlTag class (represents single tag) // 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 "htmltag.h" +#ifdef __BORLANDC__ + #pragma hdrstop #endif -#include "wx/wxprec.h" - -#include "wx/defs.h" #if wxUSE_HTML -#ifdef __BORLANDC__ -#pragma hdrstop -#endif +#include "wx/html/htmltag.h" -#ifndef WXPRECOMP +#ifndef WX_PRECOMP + #include "wx/colour.h" + #include "wx/wxcrtvararg.h" #endif -#include "wx/html/htmltag.h" #include "wx/html/htmlpars.h" -#include "wx/colour.h" +#include "wx/vector.h" + #include // for vsscanf #include - //----------------------------------------------------------------------------- // wxHtmlTagsCache //----------------------------------------------------------------------------- @@ -39,150 +36,237 @@ struct wxHtmlCacheItem { // this is "pos" value passed to wxHtmlTag's constructor. // it is position of '<' character of the tag - int Key; + wxString::const_iterator Key; + + // Tag type + enum Type + { + Type_Normal, // normal tag with a matching ending tag + Type_NoMatchingEndingTag, // there's no ending tag for this tag + Type_EndingTag // this is ending tag + }; + Type type; // end positions for the tag: // end1 is '<' of ending tag, // end2 is '>' or both are - // -1 if there is no ending tag for this one... - // or -2 if this is ending tag - int End1, End2; + wxString::const_iterator End1, End2; // name of this tag wxChar *Name; }; +// NB: this is an empty class and not typedef because of forward declaration +class wxHtmlTagsCacheData : public wxVector +{ +}; -IMPLEMENT_CLASS(wxHtmlTagsCache,wxObject) - -#define CACHE_INCREMENT 64 - -inline bool wxIsCDATAElement(const wxChar *tag) +bool wxIsCDATAElement(const wxChar *tag) { return (wxStrcmp(tag, _T("SCRIPT")) == 0) || (wxStrcmp(tag, _T("STYLE")) == 0); } -wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) +bool wxIsCDATAElement(const wxString& tag) { - const wxChar *src = source.c_str(); - int tg, stpos; - int lng = source.Length(); - wxChar tagBuffer[256]; + return (wxStrcmp(tag.wx_str(), wxS("SCRIPT")) == 0) || + (wxStrcmp(tag.wx_str(), wxS("STYLE")) == 0); +} - m_Cache = NULL; - m_CacheSize = 0; +wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) +{ + m_Cache = new wxHtmlTagsCacheData; m_CachePos = 0; - int pos = 0; - while (pos < lng) + wxChar tagBuffer[256]; + + const wxString::const_iterator end = source.end(); + for ( wxString::const_iterator pos = source.begin(); pos < end; ++pos ) { - if (src[pos] == wxT('<')) // tag found: + if (*pos == wxT('<')) // tag found: { - if (m_CacheSize % CACHE_INCREMENT == 0) - m_Cache = (wxHtmlCacheItem*) realloc(m_Cache, (m_CacheSize + CACHE_INCREMENT) * sizeof(wxHtmlCacheItem)); - tg = m_CacheSize++; - m_Cache[tg].Key = stpos = pos++; + // don't cache comment tags + if ( wxHtmlParser::SkipCommentTag(pos, source.end()) ) + continue; + + size_t tg = Cache().size(); + Cache().push_back(wxHtmlCacheItem()); + + wxString::const_iterator stpos = pos++; + Cache()[tg].Key = stpos; int i; for ( i = 0; - pos < lng && i < (int)WXSIZEOF(tagBuffer) - 1 && - src[pos] != wxT('>') && !wxIsspace(src[pos]); - i++, pos++ ) + pos < end && i < (int)WXSIZEOF(tagBuffer) - 1 && + *pos != wxT('>') && !wxIsspace(*pos); + ++i, ++pos ) { - tagBuffer[i] = wxToupper(src[pos]); + tagBuffer[i] = (wxChar)wxToupper(*pos); } tagBuffer[i] = _T('\0'); - m_Cache[tg].Name = new wxChar[i+1]; - memcpy(m_Cache[tg].Name, tagBuffer, (i+1)*sizeof(wxChar)); + Cache()[tg].Name = new wxChar[i+1]; + memcpy(Cache()[tg].Name, tagBuffer, (i+1)*sizeof(wxChar)); - while (pos < lng && src[pos] != wxT('>')) pos++; + while (pos < end && *pos != wxT('>')) + ++pos; - if (src[stpos+1] == wxT('/')) // ending tag: + if ((stpos+1) < end && *(stpos+1) == wxT('/')) // ending tag: { - m_Cache[tg].End1 = m_Cache[tg].End2 = -2; + Cache()[tg].type = wxHtmlCacheItem::Type_EndingTag; // find matching begin tag: for (i = tg; i >= 0; i--) - if ((m_Cache[i].End1 == -1) && (wxStrcmp(m_Cache[i].Name, tagBuffer+1) == 0)) + { + if ((Cache()[i].type == wxHtmlCacheItem::Type_NoMatchingEndingTag) && (wxStrcmp(Cache()[i].Name, tagBuffer+1) == 0)) { - m_Cache[i].End1 = stpos; - m_Cache[i].End2 = pos + 1; + Cache()[i].type = wxHtmlCacheItem::Type_Normal; + Cache()[i].End1 = stpos; + Cache()[i].End2 = pos + 1; break; } + } } else { - m_Cache[tg].End1 = m_Cache[tg].End2 = -1; + Cache()[tg].type = wxHtmlCacheItem::Type_NoMatchingEndingTag; if (wxIsCDATAElement(tagBuffer)) { + // store the orig pos in case we are missing the closing + // tag (see below) + const wxString::const_iterator old_pos = pos; + bool foundCloseTag = false; + // find next matching tag int tag_len = wxStrlen(tagBuffer); - while (pos < lng) + while (pos < end) { // find the ending tag - while (pos + 1 < lng && - (src[pos] != '<' || src[pos+1] != '/')) + while (pos + 1 < end && + (*pos != '<' || *(pos+1) != '/')) ++pos; - if (src[pos] == '<') + if (*pos == '<') ++pos; - + // see if it matches int match_pos = 0; - while (pos < lng && match_pos < tag_len && src[pos] != '>' && src[pos] != '<') { - if (wxToupper(src[pos]) == tagBuffer[match_pos]) { + while (pos < end && match_pos < tag_len ) + { + wxChar c = *pos; + if ( c == '>' || c == '<' ) + break; + + // cast to wxChar needed to suppress warning in + // Unicode build + if ((wxChar)wxToupper(c) == tagBuffer[match_pos]) + { ++match_pos; - } - else if (src[pos] == wxT(' ') || src[pos] == wxT('\n') || - src[pos] == wxT('\r') || src[pos] == wxT('\t')) { + } + else if (c == wxT(' ') || c == wxT('\n') || + c == wxT('\r') || c == wxT('\t')) + { // need to skip over these } - else { + else + { match_pos = 0; } ++pos; } // found a match - if (match_pos == tag_len) { + if (match_pos == tag_len) + { pos = pos - tag_len - 3; - stpos = pos; + foundCloseTag = true; break; } - else { + else // keep looking for the closing tag + { ++pos; } } + if (!foundCloseTag) + { + // we didn't find closing tag; this means the markup + // is incorrect and the best thing we can do is to + // ignore the unclosed tag and continue parsing as if + // it didn't exist: + pos = old_pos; + } } } } - - pos++; } // ok, we're done, now we'll free .Name members of cache - we don't need it anymore: - for (int i = 0; i < m_CacheSize; i++) + for ( wxHtmlTagsCacheData::iterator i = Cache().begin(); + i != Cache().end(); ++i ) { - delete[] m_Cache[i].Name; - m_Cache[i].Name = NULL; + delete[] i->Name; + i->Name = NULL; } } -void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2) +wxHtmlTagsCache::~wxHtmlTagsCache() { - if (m_Cache == NULL) return; - if (m_Cache[m_CachePos].Key != at) + delete m_Cache; +} + +void wxHtmlTagsCache::QueryTag(const wxString::const_iterator& at, + const wxString::const_iterator& inputEnd, + wxString::const_iterator *end1, + wxString::const_iterator *end2, + bool *hasEnding) +{ + if (Cache().empty()) + return; + + if (Cache()[m_CachePos].Key != at) { - int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1; + int delta = (at < Cache()[m_CachePos].Key) ? -1 : 1; do { m_CachePos += delta; + + if ( m_CachePos < 0 || m_CachePos >= (int)Cache().size() ) + { + if ( m_CachePos < 0 ) + m_CachePos = 0; + else + m_CachePos = Cache().size() - 1; + // something is very wrong with HTML, give up by returning an + // impossibly large value which is going to be ignored by the + // caller + *end1 = + *end2 = inputEnd; + *hasEnding = true; + return; + } } - while (m_Cache[m_CachePos].Key != at); + while (Cache()[m_CachePos].Key != at); + } + + switch ( Cache()[m_CachePos].type ) + { + case wxHtmlCacheItem::Type_Normal: + *end1 = Cache()[m_CachePos].End1; + *end2 = Cache()[m_CachePos].End2; + *hasEnding = true; + break; + + case wxHtmlCacheItem::Type_EndingTag: + wxFAIL_MSG("QueryTag called for ending tag - can't be"); + // but if it does happen, fall through, better than crashing + + case wxHtmlCacheItem::Type_NoMatchingEndingTag: + // If input HTML is invalid and there's no closing tag for this + // one, pretend that it runs all the way to the end of input + *end1 = inputEnd; + *end2 = inputEnd; + *hasEnding = false; + break; } - *end1 = m_Cache[m_CachePos].End1; - *end2 = m_Cache[m_CachePos].End2; } @@ -192,12 +276,12 @@ void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2) // wxHtmlTag //----------------------------------------------------------------------------- -IMPLEMENT_CLASS(wxHtmlTag,wxObject) - wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, - const wxString& source, int pos, int end_pos, + const wxString *source, + const wxString::const_iterator& pos, + const wxString::const_iterator& end_pos, wxHtmlTagsCache *cache, - wxHtmlEntitiesParser *entParser) : wxObject() + wxHtmlEntitiesParser *entParser) { /* Setup DOM relations */ @@ -218,17 +302,16 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, /* Find parameters and their values: */ - int i; - wxChar c; + wxChar c wxDUMMY_INITIALIZE(0); // fill-in name, params and begin pos: - i = pos+1; + wxString::const_iterator i(pos+1); // find tag's name and convert it to uppercase: while ((i < end_pos) && - ((c = source[i++]) != wxT(' ') && c != wxT('\r') && + ((c = *(i++)) != wxT(' ') && c != wxT('\r') && c != wxT('\n') && c != wxT('\t') && - c != wxT('>'))) + c != wxT('>') && c != wxT('/'))) { if ((c >= wxT('a')) && (c <= wxT('z'))) c -= (wxT('a') - wxT('A')); @@ -238,7 +321,7 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, // if the tag has parameters, read them and "normalize" them, // i.e. convert to uppercase, replace whitespaces by spaces and // remove whitespaces around '=': - if (source[i-1] != wxT('>')) + if (*(i-1) != wxT('>')) { #define IS_WHITE(c) (c == wxT(' ') || c == wxT('\r') || \ c == wxT('\n') || c == wxT('\t')) @@ -257,14 +340,14 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, state = ST_BEFORE_NAME; while (i < end_pos) { - c = source[i++]; + c = *(i++); if (c == wxT('>') && !(state == ST_VALUE && quote != 0)) { if (state == ST_BEFORE_EQ || state == ST_NAME) { m_ParamNames.Add(pname); - m_ParamValues.Add(wxEmptyString); + m_ParamValues.Add(wxGetEmptyString()); } else if (state == ST_VALUE && quote == 0) { @@ -299,7 +382,7 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, else if (!IS_WHITE(c)) { m_ParamNames.Add(pname); - m_ParamValues.Add(wxEmptyString); + m_ParamValues.Add(wxGetEmptyString()); pname = c; state = ST_NAME; } @@ -308,7 +391,7 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, if (!IS_WHITE(c)) { if (c == wxT('"') || c == wxT('\'')) - quote = c, pvalue = wxEmptyString; + quote = c, pvalue = wxGetEmptyString(); else quote = 0, pvalue = c; state = ST_VALUE; @@ -338,12 +421,15 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, } #undef IS_WHITE - } - m_Begin = i; + } + m_Begin = i; + cache->QueryTag(pos, source->end(), &m_End1, &m_End2, &m_hasEnding); + if (m_End1 > end_pos) m_End1 = end_pos; + if (m_End2 > end_pos) m_End2 = end_pos; - cache->QueryTag(pos, &m_End1, &m_End2); - if (m_End1 > end_pos) m_End1 = end_pos; - if (m_End2 > end_pos) m_End2 = end_pos; +#if WXWIN_COMPATIBILITY_2_8 + m_sourceStart = source->begin(); +#endif } wxHtmlTag::~wxHtmlTag() @@ -360,15 +446,15 @@ wxHtmlTag::~wxHtmlTag() bool wxHtmlTag::HasParam(const wxString& par) const { - return (m_ParamNames.Index(par, FALSE) != wxNOT_FOUND); + return (m_ParamNames.Index(par, false) != wxNOT_FOUND); } -wxString wxHtmlTag::GetParam(const wxString& par, bool with_commas) const +wxString wxHtmlTag::GetParam(const wxString& par, bool with_quotes) const { - int index = m_ParamNames.Index(par, FALSE); + int index = m_ParamNames.Index(par, false); if (index == wxNOT_FOUND) - return wxEmptyString; - if (with_commas) + return wxGetEmptyString(); + if (with_quotes) { // VS: backward compatibility, seems to be never used by wxHTML... wxString s; @@ -380,7 +466,15 @@ wxString wxHtmlTag::GetParam(const wxString& par, bool with_commas) const } int wxHtmlTag::ScanParam(const wxString& par, - const wxChar *format, + const char *format, + void *param) const +{ + wxString parval = GetParam(par); + return wxSscanf(parval, format, param); +} + +int wxHtmlTag::ScanParam(const wxString& par, + const wchar_t *format, void *param) const { wxString parval = GetParam(par); @@ -389,25 +483,16 @@ int wxHtmlTag::ScanParam(const wxString& par, bool wxHtmlTag::GetParamAsColour(const wxString& par, wxColour *clr) const { + wxCHECK_MSG( clr, false, _T("invalid colour argument") ); + wxString str = GetParam(par); - if (str.IsEmpty()) return FALSE; - if (str.GetChar(0) == wxT('#')) - { - unsigned long tmp; - if (ScanParam(par, wxT("#%lX"), &tmp) != 1) - return FALSE; - *clr = wxColour((unsigned char)((tmp & 0xFF0000) >> 16), - (unsigned char)((tmp & 0x00FF00) >> 8), - (unsigned char)(tmp & 0x0000FF)); - return TRUE; - } - else + // handle colours defined in HTML 4.0 first: + if (str.length() > 1 && str[0] != _T('#')) { - // Handle colours defined in HTML 4.0: - #define HTML_COLOUR(name,r,g,b) \ - if (str.IsSameAs(wxT(name), FALSE)) \ - { *clr = wxColour(r,g,b); return TRUE; } + #define HTML_COLOUR(name, r, g, b) \ + if (str.IsSameAs(wxS(name), false)) \ + { clr->Set(r, g, b); return true; } HTML_COLOUR("black", 0x00,0x00,0x00) HTML_COLOUR("silver", 0xC0,0xC0,0xC0) HTML_COLOUR("gray", 0x80,0x80,0x80) @@ -427,21 +512,32 @@ bool wxHtmlTag::GetParamAsColour(const wxString& par, wxColour *clr) const #undef HTML_COLOUR } - return FALSE; + // then try to parse #rrggbb representations or set from other well + // known names (note that this doesn't strictly conform to HTML spec, + // but it doesn't do real harm -- but it *must* be done after the standard + // colors are handled above): + if (clr->Set(str)) + return true; + + return false; } bool wxHtmlTag::GetParamAsInt(const wxString& par, int *clr) const { - if (!HasParam(par)) return FALSE; + if ( !HasParam(par) ) + return false; + long i; - bool succ = GetParam(par).ToLong(&i); + if ( !GetParam(par).ToLong(&i) ) + return false; + *clr = (int)i; - return succ; + return true; } wxString wxHtmlTag::GetAllParams() const { - // VS: this function is for backward compatiblity only, + // VS: this function is for backward compatibility only, // never used by wxHTML wxString s; size_t cnt = m_ParamNames.GetCount();