*** empty log message ***

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

diff --git a/src/html/htmlparser.cpp b/src/html/htmlparser.cpp
new file mode 100644 (file)
index 0000000..ff72c7d
--- /dev/null
+++ b/src/html/htmlparser.cpp
@@ -0,0 +1,169 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        htmlparser.cpp
+// Purpose:     wxHtmlParser class (generic parser)
+// Author:      Vaclav Slavik
+// Copyright:   (c) 1999 Vaclav Slavik
+// Licence:     wxWindows Licence
+/////////////////////////////////////////////////////////////////////////////
+
+
+#ifdef __GNUG__
+#pragma implementation
+#endif
+
+#include <wx/wxprec.h>
+
+#include "wx/defs.h"
+#if wxUSE_HTML
+
+#ifdef __BORDLANDC__
+#pragma hdrstop
+#endif
+
+#ifndef WXPRECOMP
+#include <wx/wx.h>
+#endif
+
+#include <wx/tokenzr.h>
+#include <wx/wfstream.h>
+#include <wx/url.h>
+#include <wx/html/htmldefs.h>
+#include <wx/html/htmlparser.h>
+
+
+
+//-----------------------------------------------------------------------------
+// wxHtmlParser
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxHtmlParser,wxObject)
+
+
+wxObject* wxHtmlParser::Parse(const wxString& source)
+{
+    wxObject *result;
+
+    InitParser(source);
+    DoParsing();
+    result = GetProduct();
+    DoneParser();
+    return result;
+}
+
+
+
+void wxHtmlParser::InitParser(const wxString& source)
+{
+    m_Source = source;
+    m_Cache = new wxHtmlTagsCache(m_Source);
+}
+        
+        
+        
+void wxHtmlParser::DoneParser()
+{
+    delete m_Cache;
+    m_Cache = NULL;
+}
+
+
+
+#define HTML_MAX_BUFLEN 1024
+
+void wxHtmlParser::DoParsing(int begin_pos, int end_pos)
+{
+    char temp[HTML_BUFLEN], c;
+    int i;
+    int templen;
+
+    templen = 0;
+    i = begin_pos;
+
+    while (i < end_pos) {
+        c = m_Source[i];
+
+        // continue building word:
+        if (c != '<') {
+            temp[templen++] = c;
+            if (templen == HTML_BUFLEN-1) {
+                temp[templen] = 0;
+                AddText(temp);
+                templen = 0;
+            }
+            i++;
+        }
+
+        else if (c == '<')  {
+            wxHtmlTag tag(m_Source, i, end_pos, m_Cache);
+
+            if (templen) {
+                temp[templen] = 0;
+                AddText(temp);
+                templen = 0;
+            }
+            AddTag(tag);
+            if (tag.HasEnding()) i = tag.GetEndPos2();
+            else i = tag.GetBeginPos();
+        }
+    }
+
+    if (templen) { // last word of block :-(
+        temp[templen] = 0;
+        AddText(temp);
+    }
+}
+
+
+
+void wxHtmlParser::AddTag(const wxHtmlTag& tag)
+{
+    wxHtmlTagHandler *h;
+    bool inner = FALSE;
+
+    h = (wxHtmlTagHandler*) m_HandlersHash.Get(tag.GetName());
+    if (h)
+        inner = h -> HandleTag(tag);
+    if (!inner) {
+        if (tag.HasEnding())
+            DoParsing(tag.GetBeginPos(), tag.GetEndPos1());
+    }
+}
+
+
+
+void wxHtmlParser::AddTagHandler(wxHtmlTagHandler *handler)
+{
+    wxString s(handler -> GetSupportedTags());
+    wxStringTokenizer tokenizer(s, ", ");
+
+#if (wxVERSION_NUMBER < 2100)
+    while (tokenizer.HasMoreToken())
+#else
+    while (tokenizer.HasMoreTokens())
+#endif
+        m_HandlersHash.Put(tokenizer.NextToken(), handler);
+
+    if (m_HandlersList.IndexOf(handler) == wxNOT_FOUND)
+        m_HandlersList.Append(handler);
+
+    handler -> SetParser(this);
+}
+
+
+
+wxHtmlParser::~wxHtmlParser()
+{
+    m_HandlersHash.Clear();
+    m_HandlersList.DeleteContents(TRUE);
+    m_HandlersList.Clear();
+}
+
+
+
+//-----------------------------------------------------------------------------
+// wxHtmlTagHandler
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxHtmlTagHandler,wxObject)
+
+#endif
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