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[wxWidgets.git] / src / html / htmltag.cpp

diff --git a/src/html/htmltag.cpp b/src/html/htmltag.cpp
index 9f36d6895782bc4f7d8f6c607eea1509cd6d7f3e..33607f7adae6a8d6ff54554caa39b0af393d7b0c 100644 (file)
--- a/src/html/htmltag.cpp
+++ b/src/html/htmltag.cpp
@@ -2,16 +2,17 @@
 // Name:        htmltag.cpp
 // Purpose:     wxHtmlTag class (represents single tag)
 // Author:      Vaclav Slavik
 // Name:        htmltag.cpp
 // Purpose:     wxHtmlTag class (represents single tag)
 // Author:      Vaclav Slavik

+// RCS-ID:      $Id$

 // Copyright:   (c) 1999 Vaclav Slavik
 // Licence:     wxWindows Licence
 /////////////////////////////////////////////////////////////////////////////
 
 
 #ifdef __GNUG__
 // Copyright:   (c) 1999 Vaclav Slavik
 // Licence:     wxWindows Licence
 /////////////////////////////////////////////////////////////////////////////
 
 
 #ifdef __GNUG__

-#pragma implementation
+#pragma implementation "htmltag.h"

 #endif
 
 #endif
 

-#include <wx/wxprec.h>
+#include "wx/wxprec.h"

 
 #include "wx/defs.h"
 #if wxUSE_HTML
 
 #include "wx/defs.h"
 #if wxUSE_HTML


@@ -21,64 +22,91 @@
 #endif
 
 #ifndef WXPRECOMP
 #endif
 
 #ifndef WXPRECOMP

-#include <wx/wx.h>

 #endif
 
 #endif
 

-#include <wx/html/htmltag.h>
+#include "wx/html/htmltag.h"
+#include "wx/html/htmlpars.h"
+#include "wx/colour.h"
+#include <stdio.h> // for vsscanf

 #include <stdarg.h>
 
 
 #include <stdarg.h>
 
 

-
-

 //-----------------------------------------------------------------------------
 // wxHtmlTagsCache
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 // wxHtmlTagsCache
 //-----------------------------------------------------------------------------
 

+struct wxHtmlCacheItem
+{
+    // this is "pos" value passed to wxHtmlTag's constructor.
+    // it is position of '<' character of the tag
+    int Key;
+
+    // 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;
+
+    // name of this tag
+    wxChar *Name;
+};
+
+

 IMPLEMENT_CLASS(wxHtmlTagsCache,wxObject)
 
 #define CACHE_INCREMENT  64
 
 wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
 {
 IMPLEMENT_CLASS(wxHtmlTagsCache,wxObject)
 
 #define CACHE_INCREMENT  64
 
 wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
 {

-    const char *src = source.c_str();
-    int i, tg, pos, stpos;
+    const wxChar *src = source.c_str();
+    int tg, stpos;

     int lng = source.Length();
     int lng = source.Length();

-    char dummy[256];
+    wxChar tagBuffer[256];

 
     m_Cache = NULL;
     m_CacheSize = 0;
     m_CachePos = 0;
 
 
     m_Cache = NULL;
     m_CacheSize = 0;
     m_CachePos = 0;
 

-    pos = 0;
-    while (pos < lng) {
-        if (src[pos] == '<') {  // tag found:
+    int pos = 0;
+    while (pos < lng)
+    {
+        if (src[pos] == wxT('<'))   // tag found:
+        {

             if (m_CacheSize % CACHE_INCREMENT == 0)
             if (m_CacheSize % CACHE_INCREMENT == 0)

-                m_Cache = (sCacheItem*) realloc(m_Cache, (m_CacheSize + CACHE_INCREMENT) * sizeof(sCacheItem));
+                m_Cache = (wxHtmlCacheItem*) realloc(m_Cache, (m_CacheSize + CACHE_INCREMENT) * sizeof(wxHtmlCacheItem));

             tg = m_CacheSize++;
             m_Cache[tg].Key = stpos = pos++;
             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++;
+
+            int i;
+            for ( i = 0;
+                  pos < lng && i < (int)WXSIZEOF(tagBuffer) - 1 &&
+                  src[pos] != wxT('>') && !wxIsspace(src[pos]);
+                  i++, pos++ )
+            {
+                tagBuffer[i] = wxToupper(src[pos]);

             }
             }

-            dummy[i] = 0;
-            m_Cache[tg].Name = (char*) malloc(i+1);
-            memcpy(m_Cache[tg].Name, dummy, i+1);
+            tagBuffer[i] = _T('\0');

 
 

-            while (src[pos] != '>') pos++;
+            m_Cache[tg].Name = new wxChar[i+1];
+            memcpy(m_Cache[tg].Name, tagBuffer, (i+1)*sizeof(wxChar));

 
 

-            if (src[stpos+1] == '/') { // ending tag:
+            while (pos < lng && src[pos] != wxT('>')) pos++;
+
+            if (src[stpos+1] == wxT('/')) // ending tag:
+            {

                 m_Cache[tg].End1 = m_Cache[tg].End2 = -2;
                 // find matching begin tag:
                 for (i = tg; i >= 0; i--)
                 m_Cache[tg].End1 = m_Cache[tg].End2 = -2;
                 // find matching begin tag:
                 for (i = tg; i >= 0; i--)

-                    if ((m_Cache[i].End1 == -1) && (strcmp(m_Cache[i].Name, dummy+1) == 0)) {
+                    if ((m_Cache[i].End1 == -1) && (wxStrcmp(m_Cache[i].Name, tagBuffer+1) == 0))
+                    {

                         m_Cache[i].End1 = stpos;
                         m_Cache[i].End2 = pos + 1;
                         break;
                     }
             }
                         m_Cache[i].End1 = stpos;
                         m_Cache[i].End2 = pos + 1;
                         break;
                     }
             }

-            else {
+            else
+            {

                 m_Cache[tg].End1 = m_Cache[tg].End2 = -1;
             }
         }
                 m_Cache[tg].End1 = m_Cache[tg].End2 = -1;
             }
         }


@@ -87,20 +115,24 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
     }
 
     // ok, we're done, now we'll free .Name members of cache - we don't need it anymore:
     }
 
     // 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++) {
-        free(m_Cache[i].Name);
+    for (int i = 0; i < m_CacheSize; i++)
+    {
+        delete[] m_Cache[i].Name;

         m_Cache[i].Name = NULL;
     }
 }
 
         m_Cache[i].Name = NULL;
     }
 }
 

-
-

 void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
 {
     if (m_Cache == NULL) return;
 void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
 {
     if (m_Cache == NULL) return;

-    if (m_Cache[m_CachePos].Key != at) {
+    if (m_Cache[m_CachePos].Key != at)
+    {

         int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1;
         int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1;

-        do {m_CachePos += delta;} while (m_Cache[m_CachePos].Key != at);
+        do
+        {
+            m_CachePos += delta;
+        }
+        while (m_Cache[m_CachePos].Key != at);

     }
     *end1 = m_Cache[m_CachePos].End1;
     *end2 = m_Cache[m_CachePos].End2;
     }
     *end1 = m_Cache[m_CachePos].End1;
     *end2 = m_Cache[m_CachePos].End2;


@@ -115,135 +147,304 @@ void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
 
 IMPLEMENT_CLASS(wxHtmlTag,wxObject)
 
 
 IMPLEMENT_CLASS(wxHtmlTag,wxObject)
 

-wxHtmlTag::wxHtmlTag(const wxString& source, int pos, int end_pos, wxHtmlTagsCache* cache) : wxObject()
+wxHtmlTag::wxHtmlTag(wxHtmlTag *parent,
+                     const wxString& source, int pos, int end_pos,
+                     wxHtmlTagsCache *cache,
+                     wxHtmlEntitiesParser *entParser) : wxObject()

 {
 {

+    /* 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: */
+

     int i;
     int i;

-    char c;
+    wxChar c;

 
     // fill-in name, params and begin pos:
 
     // fill-in name, params and begin pos:

-    m_Name = m_Params = wxEmptyString;

     i = pos+1;
     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;
+    // find tag's name and convert it to uppercase:
+    while ((i < end_pos) &&
+           ((c = source[i++]) != wxT(' ') && c != wxT('\r') &&
+             c != wxT('\n') && c != wxT('\t') &&
+             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 (source[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 = source[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);
+                }
+                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(wxEmptyString);
+                        pname = c;
+                        state = ST_NAME;
+                    }
+                    break;
+                case ST_BEFORE_VALUE:
+                    if (!IS_WHITE(c))
+                    {
+                        if (c == wxT('"') || c == wxT('\''))
+                            quote = c, pvalue = wxEmptyString;
+                        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;

             }
         }
             }
         }

+
+        #undef IS_WHITE
+   }

    m_Begin = i;
 
    m_Begin = i;
 

-   cache -> QueryTag(pos, &m_End1, &m_End2);
+   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 (m_End1 > end_pos) m_End1 = end_pos;
    if (m_End2 > end_pos) m_End2 = end_pos;
 }
 

-    
-
-bool wxHtmlTag::HasParam(const wxString& par) const
+wxHtmlTag::~wxHtmlTag()

 {
 {

-    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;
-            }
-        }
+    wxHtmlTag *t1, *t2;
+    t1 = m_FirstChild;
+    while (t1)
+    {
+        t2 = t1->GetNextSibling();
+        delete t1;
+        t1 = t2;

     }
 }
 
     }
 }
 

-
+bool wxHtmlTag::HasParam(const wxString& par) const
+{
+    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_commas) const
 {

-    const char *st = m_Params, *p = par;
-    const char *st2, *p2;
-    bool comma;
-
-    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++;
-            }
-        }
+    int index = m_ParamNames.Index(par, FALSE);
+    if (index == wxNOT_FOUND)
+        return wxEmptyString;
+    if (with_commas)
+    {
+        // 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 wxChar *format,
+                         void *param) const
+{
+    wxString parval = GetParam(par);
+    return wxSscanf(parval, format, param);
+}

 
 

+bool wxHtmlTag::GetParamAsColour(const wxString& par, wxColour *clr) const
+{
+    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:
+        #define HTML_COLOUR(name,r,g,b)                 \
+            if (str.IsSameAs(wxT(name), FALSE))         \
+                { *clr = wxColour(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
+    }
+
+    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 compatiblity 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
 }
 
 #endif