/////////////////////////////////////////////////////////////////////////////
-// 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
+#ifdef __BORLANDC__
+ #pragma hdrstop
#endif
-#include <wx/wxprec.h>
-
-#include "wx/defs.h"
#if wxUSE_HTML
-#ifdef __BORDLANDC__
-#pragma hdrstop
-#endif
+#include "wx/html/htmltag.h"
-#ifndef WXPRECOMP
-#include <wx/wx.h>
+#ifndef WX_PRECOMP
+ #include "wx/colour.h"
+ #include "wx/wxcrtvararg.h"
#endif
-#include <wx/html/htmltag.h>
+#include "wx/html/htmlpars.h"
+#include "wx/vector.h"
+
#include <stdio.h> // for vsscanf
#include <stdarg.h>
-
-
-
//-----------------------------------------------------------------------------
// wxHtmlTagsCache
//-----------------------------------------------------------------------------
-IMPLEMENT_CLASS(wxHtmlTagsCache,wxObject)
+struct wxHtmlCacheItem
+{
+ // this is "pos" value passed to wxHtmlTag's constructor.
+ // it is position of '<' character of the tag
+ 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
+ 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<wxHtmlCacheItem>
+{
+};
+
+bool wxIsCDATAElement(const wxChar *tag)
+{
+ return (wxStrcmp(tag, _T("SCRIPT")) == 0) ||
+ (wxStrcmp(tag, _T("STYLE")) == 0);
+}
-#define CACHE_INCREMENT 64
+bool wxIsCDATAElement(const wxString& tag)
+{
+ return (wxStrcmp(tag.wx_str(), wxS("SCRIPT")) == 0) ||
+ (wxStrcmp(tag.wx_str(), wxS("STYLE")) == 0);
+}
wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
{
- const char *src = source.c_str();
- int i, tg, pos, stpos;
- int lng = source.Length();
- char dummy[256];
-
- m_Cache = NULL;
- m_CacheSize = 0;
+ m_Cache = new wxHtmlTagsCacheData;
m_CachePos = 0;
- pos = 0;
- while (pos < lng) {
- if (src[pos] == '<') { // tag found:
- if (m_CacheSize % CACHE_INCREMENT == 0)
- m_Cache = (sCacheItem*) realloc(m_Cache, (m_CacheSize + CACHE_INCREMENT) * sizeof(sCacheItem));
- tg = m_CacheSize++;
- m_Cache[tg].Key = stpos = pos++;
- dummy[0] = 0; i = 0;
- while ((src[pos] != '>') && (src[pos] != ' ')) {
- dummy[i] = src[pos++];
- if ((dummy[i] >= 'a') && (dummy[i] <= 'z')) dummy[i] -= ('a' - 'A');
- i++;
+ wxChar tagBuffer[256];
+
+ const wxString::const_iterator end = source.end();
+ for ( wxString::const_iterator pos = source.begin(); pos < end; ++pos )
+ {
+ if (*pos == wxT('<')) // tag found:
+ {
+ // 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 < end && i < (int)WXSIZEOF(tagBuffer) - 1 &&
+ *pos != wxT('>') && !wxIsspace(*pos);
+ ++i, ++pos )
+ {
+ tagBuffer[i] = (wxChar)wxToupper(*pos);
}
- dummy[i] = 0;
- m_Cache[tg].Name = new char[i+1];
- memcpy(m_Cache[tg].Name, dummy, i+1);
+ tagBuffer[i] = _T('\0');
+
+ Cache()[tg].Name = new wxChar[i+1];
+ memcpy(Cache()[tg].Name, tagBuffer, (i+1)*sizeof(wxChar));
- while (src[pos] != '>') pos++;
+ while (pos < end && *pos != wxT('>'))
+ ++pos;
- if (src[stpos+1] == '/') { // ending tag:
- m_Cache[tg].End1 = m_Cache[tg].End2 = -2;
+ if ((stpos+1) < end && *(stpos+1) == wxT('/')) // ending tag:
+ {
+ Cache()[tg].type = wxHtmlCacheItem::Type_EndingTag;
// find matching begin tag:
for (i = tg; i >= 0; i--)
- if ((m_Cache[i].End1 == -1) && (strcmp(m_Cache[i].Name, dummy+1) == 0)) {
- m_Cache[i].End1 = stpos;
- m_Cache[i].End2 = pos + 1;
+ {
+ if ((Cache()[i].type == wxHtmlCacheItem::Type_NoMatchingEndingTag) && (wxStrcmp(Cache()[i].Name, tagBuffer+1) == 0))
+ {
+ 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;
+ else
+ {
+ 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 < end)
+ {
+ // find the ending tag
+ while (pos + 1 < end &&
+ (*pos != '<' || *(pos+1) != '/'))
+ ++pos;
+ if (*pos == '<')
+ ++pos;
+
+ // see if it matches
+ int match_pos = 0;
+ 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 (c == wxT(' ') || c == wxT('\n') ||
+ c == wxT('\r') || c == wxT('\t'))
+ {
+ // need to skip over these
+ }
+ else
+ {
+ match_pos = 0;
+ }
+ ++pos;
+ }
+
+ // found a match
+ if (match_pos == tag_len)
+ {
+ pos = pos - tag_len - 3;
+ foundCloseTag = true;
+ break;
+ }
+ 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 (i = 0; i < m_CacheSize; i++) {
- delete[] m_Cache[i].Name;
- m_Cache[i].Name = NULL;
+ for ( wxHtmlTagsCacheData::iterator i = Cache().begin();
+ i != Cache().end(); ++i )
+ {
+ delete[] i->Name;
+ i->Name = NULL;
}
}
+wxHtmlTagsCache::~wxHtmlTagsCache()
+{
+ delete m_Cache;
+}
-
-void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
+void wxHtmlTagsCache::QueryTag(const wxString::const_iterator& at,
+ const wxString::const_iterator& inputEnd,
+ wxString::const_iterator *end1,
+ wxString::const_iterator *end2,
+ bool *hasEnding)
{
- if (m_Cache == NULL) return;
- if (m_Cache[m_CachePos].Key != at) {
- int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1;
- do {m_CachePos += delta;} while (m_Cache[m_CachePos].Key != at);
+ if (Cache().empty())
+ return;
+
+ if (Cache()[m_CachePos].Key != at)
+ {
+ 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 (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;
}
// wxHtmlTag
//-----------------------------------------------------------------------------
-IMPLEMENT_CLASS(wxHtmlTag,wxObject)
-
-wxHtmlTag::wxHtmlTag(const wxString& source, int pos, int end_pos, wxHtmlTagsCache* cache) : wxObject()
+wxHtmlTag::wxHtmlTag(wxHtmlTag *parent,
+ const wxString *source,
+ const wxString::const_iterator& pos,
+ const wxString::const_iterator& end_pos,
+ wxHtmlTagsCache *cache,
+ wxHtmlEntitiesParser *entParser)
{
- int i;
- char c;
+ /* Setup DOM relations */
+
+ m_Next = NULL;
+ m_FirstChild = m_LastChild = NULL;
+ m_Parent = parent;
+ if (parent)
+ {
+ m_Prev = m_Parent->m_LastChild;
+ if (m_Prev == NULL)
+ m_Parent->m_FirstChild = this;
+ else
+ m_Prev->m_Next = this;
+ m_Parent->m_LastChild = this;
+ }
+ else
+ m_Prev = NULL;
+
+ /* Find parameters and their values: */
+
+ wxChar c;
// fill-in name, params and begin pos:
- m_Name = m_Params = wxEmptyString;
- i = pos+1;
- if (source[i] == '/') {m_Ending = TRUE; i++;}
- else m_Ending = FALSE;
-
- while ((i < end_pos) && ((c = source[i++]) != ' ') && (c != '>')) {
- if ((c >= 'a') && (c <= 'z')) c -= ('a' - 'A');
- m_Name += c;
+ wxString::const_iterator i(pos+1);
+
+ // find tag's name and convert it to uppercase:
+ while ((i < end_pos) &&
+ ((c = *(i++)) != wxT(' ') && c != wxT('\r') &&
+ c != wxT('\n') && c != wxT('\t') &&
+ c != wxT('>') && c != wxT('/')))
+ {
+ if ((c >= wxT('a')) && (c <= wxT('z')))
+ c -= (wxT('a') - wxT('A'));
+ m_Name << c;
}
- if (source[i-1] != '>')
- while ((i < end_pos) && ((c = source[i++]) != '>')) {
- if ((c >= 'a') && (c <= 'z')) c -= ('a' - 'A');
- m_Params += c;
- if (c == '"') {
- while ((i < end_pos) && ((c = source[i++]) != '"')) m_Params += c;
- m_Params += c;
+ // if the tag has parameters, read them and "normalize" them,
+ // i.e. convert to uppercase, replace whitespaces by spaces and
+ // remove whitespaces around '=':
+ if (*(i-1) != wxT('>'))
+ {
+ #define IS_WHITE(c) (c == wxT(' ') || c == wxT('\r') || \
+ c == wxT('\n') || c == wxT('\t'))
+ wxString pname, pvalue;
+ wxChar quote;
+ enum
+ {
+ ST_BEFORE_NAME = 1,
+ ST_NAME,
+ ST_BEFORE_EQ,
+ ST_BEFORE_VALUE,
+ ST_VALUE
+ } state;
+
+ quote = 0;
+ state = ST_BEFORE_NAME;
+ while (i < end_pos)
+ {
+ 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(wxGetEmptyString());
+ }
+ else if (state == ST_VALUE && quote == 0)
+ {
+ m_ParamNames.Add(pname);
+ if (entParser)
+ m_ParamValues.Add(entParser->Parse(pvalue));
+ else
+ m_ParamValues.Add(pvalue);
+ }
+ break;
+ }
+ switch (state)
+ {
+ case ST_BEFORE_NAME:
+ if (!IS_WHITE(c))
+ {
+ pname = c;
+ state = ST_NAME;
+ }
+ break;
+ case ST_NAME:
+ if (IS_WHITE(c))
+ state = ST_BEFORE_EQ;
+ else if (c == wxT('='))
+ state = ST_BEFORE_VALUE;
+ else
+ pname << c;
+ break;
+ case ST_BEFORE_EQ:
+ if (c == wxT('='))
+ state = ST_BEFORE_VALUE;
+ else if (!IS_WHITE(c))
+ {
+ m_ParamNames.Add(pname);
+ m_ParamValues.Add(wxGetEmptyString());
+ pname = c;
+ state = ST_NAME;
+ }
+ break;
+ case ST_BEFORE_VALUE:
+ if (!IS_WHITE(c))
+ {
+ if (c == wxT('"') || c == wxT('\''))
+ quote = c, pvalue = wxGetEmptyString();
+ else
+ quote = 0, pvalue = c;
+ state = ST_VALUE;
+ }
+ break;
+ case ST_VALUE:
+ if ((quote != 0 && c == quote) ||
+ (quote == 0 && IS_WHITE(c)))
+ {
+ m_ParamNames.Add(pname);
+ if (quote == 0)
+ {
+ // VS: backward compatibility, no real reason,
+ // but wxHTML code relies on this... :(
+ pvalue.MakeUpper();
+ }
+ if (entParser)
+ m_ParamValues.Add(entParser->Parse(pvalue));
+ else
+ m_ParamValues.Add(pvalue);
+ state = ST_BEFORE_NAME;
+ }
+ else
+ pvalue << c;
+ break;
}
}
- 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;
+ #undef IS_WHITE
+ }
+ 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;
+
+#if WXWIN_COMPATIBILITY_2_8
+ m_sourceStart = source->begin();
+#endif
}
-
+wxHtmlTag::~wxHtmlTag()
+{
+ wxHtmlTag *t1, *t2;
+ t1 = m_FirstChild;
+ while (t1)
+ {
+ t2 = t1->GetNextSibling();
+ delete t1;
+ t1 = t2;
+ }
+}
bool wxHtmlTag::HasParam(const wxString& par) const
{
- const char *st = m_Params, *p = par;
- const char *st2, *p2;
-
- if (*st == 0) return FALSE;
- if (*p == 0) return FALSE;
- for (st2 = st, p2 = p; ; st2++) {
- if (*p2 == 0) return TRUE;
- if (*st2 == 0) return FALSE;
- if (*p2 != *st2) p2 = p;
- if (*p2 == *st2) p2++;
- if (*st2 == ' ') p2 = p;
- else if (*st2 == '=') {
- p2 = p;
- while (*st2 != ' ') {
- if (*st2 == '"') {
- st2++;
- while (*st2 != '"') st2++;
- }
- st2++;
- if (*st2 == 0) return FALSE;
- }
- }
- }
+ return (m_ParamNames.Index(par, false) != wxNOT_FOUND);
}
+wxString wxHtmlTag::GetParam(const wxString& par, bool with_quotes) const
+{
+ int index = m_ParamNames.Index(par, false);
+ if (index == wxNOT_FOUND)
+ return wxGetEmptyString();
+ if (with_quotes)
+ {
+ // VS: backward compatibility, seems to be never used by wxHTML...
+ wxString s;
+ s << wxT('"') << m_ParamValues[index] << wxT('"');
+ return s;
+ }
+ else
+ return m_ParamValues[index];
+}
+int wxHtmlTag::ScanParam(const wxString& par,
+ const char *format,
+ void *param) const
+{
+ wxString parval = GetParam(par);
+ return wxSscanf(parval, format, param);
+}
-wxString wxHtmlTag::GetParam(const wxString& par, bool with_commas) const
+int wxHtmlTag::ScanParam(const wxString& par,
+ const wchar_t *format,
+ void *param) const
{
- const char *st = m_Params, *p = par;
- const char *st2, *p2;
- bool comma;
+ wxString parval = GetParam(par);
+ return wxSscanf(parval, format, param);
+}
- if (*st == 0) return "";
- if (*p == 0) return "";
- for (st2 = st, p2 = p; ; st2++) {
- if (*p2 == 0) { // found
- wxString fnd = "";
- st2++; // '=' character
- comma = FALSE;
- if (!with_commas && (*(st2) == '"')) {st2++; comma = TRUE;}
- while (*st2 != 0) {
- if (*st2 == '"') comma = !comma;
- else if ((*st2 == ' ') && (!comma)) break;
- fnd += (*(st2++));
- }
- if (!with_commas && (*(st2-1) == '"')) fnd.RemoveLast();
- return fnd;
- }
- if (*st2 == 0) return "";
- if (*p2 != *st2) p2 = p;
- if (*p2 == *st2) p2++;
- if (*st2 == ' ') p2 = p;
- else if (*st2 == '=') {
- p2 = p;
- while (*st2 != ' ') {
- if (*st2 == '"') {
- st2++;
- while (*st2 != '"') st2++;
- }
- st2++;
- }
- }
+bool wxHtmlTag::GetParamAsColour(const wxString& par, wxColour *clr) const
+{
+ wxCHECK_MSG( clr, false, _T("invalid colour argument") );
+
+ wxString str = GetParam(par);
+
+ // handle colours defined in HTML 4.0 first:
+ if (str.length() > 1 && str[0] != _T('#'))
+ {
+ #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)
+ HTML_COLOUR("white", 0xFF,0xFF,0xFF)
+ HTML_COLOUR("maroon", 0x80,0x00,0x00)
+ HTML_COLOUR("red", 0xFF,0x00,0x00)
+ HTML_COLOUR("purple", 0x80,0x00,0x80)
+ HTML_COLOUR("fuchsia", 0xFF,0x00,0xFF)
+ HTML_COLOUR("green", 0x00,0x80,0x00)
+ HTML_COLOUR("lime", 0x00,0xFF,0x00)
+ HTML_COLOUR("olive", 0x80,0x80,0x00)
+ HTML_COLOUR("yellow", 0xFF,0xFF,0x00)
+ HTML_COLOUR("navy", 0x00,0x00,0x80)
+ HTML_COLOUR("blue", 0x00,0x00,0xFF)
+ HTML_COLOUR("teal", 0x00,0x80,0x80)
+ HTML_COLOUR("aqua", 0x00,0xFF,0xFF)
+ #undef HTML_COLOUR
}
-}
+ // 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;
+}
-void wxHtmlTag::ScanParam(const wxString& par, char *format, ...) const
+bool wxHtmlTag::GetParamAsInt(const wxString& par, int *clr) const
{
- va_list argptr;
- wxString parval = GetParam(par);
+ if (!HasParam(par)) return false;
+ long i;
+ bool succ = GetParam(par).ToLong(&i);
+ *clr = (int)i;
+ return succ;
+}
- va_start(argptr, format);
+wxString wxHtmlTag::GetAllParams() const
+{
+ // VS: this function is for backward compatibility only,
+ // never used by wxHTML
+ wxString s;
+ size_t cnt = m_ParamNames.GetCount();
+ for (size_t i = 0; i < cnt; i++)
+ {
+ s << m_ParamNames[i];
+ s << wxT('=');
+ if (m_ParamValues[i].Find(wxT('"')) != wxNOT_FOUND)
+ s << wxT('\'') << m_ParamValues[i] << wxT('\'');
+ else
+ s << wxT('"') << m_ParamValues[i] << wxT('"');
+ }
+ return s;
+}
-//#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(__VISUALC__)
-#ifndef HAVE_VSSCANF
- sscanf((const char*)parval, format, va_arg(argptr, void *));
-#else
- vsscanf((const char*)parval, format, argptr);
-#endif
+wxHtmlTag *wxHtmlTag::GetFirstSibling() const
+{
+ if (m_Parent)
+ return m_Parent->m_FirstChild;
+ else
+ {
+ wxHtmlTag *cur = (wxHtmlTag*)this;
+ while (cur->m_Prev)
+ cur = cur->m_Prev;
+ return cur;
+ }
+}
-/*
- --- vsscanf is not defined under Cygwin or Mingw32 or M$ Visual C++ environment
- if this module doesn't compile with your compiler,
- modify the def statement and let me know. Thanks...
-
- So far wxHtml functions are scanning only _one_ value
- so I workarounded this by supposing that there is only
- one ...-parameter
-*/
-
- va_end(argptr);
+wxHtmlTag *wxHtmlTag::GetLastSibling() const
+{
+ if (m_Parent)
+ return m_Parent->m_LastChild;
+ else
+ {
+ wxHtmlTag *cur = (wxHtmlTag*)this;
+ while (cur->m_Next)
+ cur = cur->m_Next;
+ return cur;
+ }
+}
+
+wxHtmlTag *wxHtmlTag::GetNextTag() const
+{
+ if (m_FirstChild) return m_FirstChild;
+ if (m_Next) return m_Next;
+ wxHtmlTag *cur = m_Parent;
+ if (!cur) return NULL;
+ while (cur->m_Parent && !cur->m_Next)
+ cur = cur->m_Parent;
+ return cur->m_Next;
}
#endif
projects / wxWidgets.git / blobdiff