X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/07cc7ddca5bcb5a056321bad9eaec6eab7b9ad7b..3ab296d9eb6d351eb1d2238f3e6ff2f5e6123861:/src/html/htmltag.cpp diff --git a/src/html/htmltag.cpp b/src/html/htmltag.cpp index 0b0b894f5b..bcf337bc3b 100644 --- a/src/html/htmltag.cpp +++ b/src/html/htmltag.cpp @@ -1,32 +1,27 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 + #include "wx/colour.h" #endif -#include "wx/html/htmltag.h" #include "wx/html/htmlpars.h" -#include "wx/colour.h" #include // for vsscanf #include @@ -66,8 +61,7 @@ bool wxIsCDATAElement(const wxChar *tag) wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) { const wxChar *src = source.c_str(); - int tg, stpos; - int lng = source.Length(); + int lng = source.length(); wxChar tagBuffer[256]; m_Cache = NULL; @@ -81,8 +75,9 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) { 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++; + int tg = m_CacheSize++; + int stpos = pos++; + m_Cache[tg].Key = stpos; int i; for ( i = 0; @@ -90,7 +85,7 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) src[pos] != wxT('>') && !wxIsspace(src[pos]); i++, pos++ ) { - tagBuffer[i] = wxToupper(src[pos]); + tagBuffer[i] = (wxChar)wxToupper(src[pos]); } tagBuffer[i] = _T('\0'); @@ -117,6 +112,11 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) if (wxIsCDATAElement(tagBuffer)) { + // store the orig pos in case we are missing the closing + // tag (see below) + wxInt32 old_pos = pos; + bool foundCloseTag = false; + // find next matching tag int tag_len = wxStrlen(tagBuffer); while (pos < lng) @@ -127,13 +127,15 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) ++pos; if (src[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]) { + // cast to wxChar needed to suppress warning in + // Unicode build + if ((wxChar)wxToupper(src[pos]) == tagBuffer[match_pos]) { ++match_pos; - } + } else if (src[pos] == wxT(' ') || src[pos] == wxT('\n') || src[pos] == wxT('\r') || src[pos] == wxT('\t')) { // need to skip over these @@ -145,15 +147,25 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source) } // 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; + } } } } @@ -177,6 +189,16 @@ void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2) int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1; do { + if ( m_CachePos < 0 || m_CachePos == m_CacheSize ) + { + // 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 = INT_MAX; + return; + } + m_CachePos += delta; } while (m_Cache[m_CachePos].Key != at); @@ -338,12 +360,12 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent, } #undef IS_WHITE - } - m_Begin = i; + } + m_Begin = i; - 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; + 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; } wxHtmlTag::~wxHtmlTag() @@ -360,12 +382,12 @@ 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 { - int index = m_ParamNames.Index(par, FALSE); + int index = m_ParamNames.Index(par, false); if (index == wxNOT_FOUND) return wxEmptyString; if (with_commas) @@ -389,25 +411,16 @@ 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(wxT(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) @@ -427,12 +440,19 @@ 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); *clr = (int)i; @@ -441,7 +461,7 @@ bool wxHtmlTag::GetParamAsInt(const wxString& par, int *clr) const 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();