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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2963 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/search.cpp

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+/////////////////////////////////////////////////////////////////////////////
+// Name:        search.cpp
+// Purpose:     search engine
+// 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 "search.h"
+
+
+
+//--------------------------------------------------------------------------------
+// wxSearchEngine
+//--------------------------------------------------------------------------------
+
+void wxSearchEngine::LookFor(const wxString& keyword)
+{
+    if (m_Keyword) free(m_Keyword);
+    m_Keyword = (char*) malloc(keyword.Length() + 1);
+    strcpy(m_Keyword, keyword.c_str());
+    for (int i = strlen(m_Keyword) - 1; i >= 0; i--)
+        if ((m_Keyword[i] >= 'A') && (m_Keyword[i] <= 'Z'))
+            m_Keyword[i] += 'a' - 'A';
+}
+
+
+
+bool wxSearchEngine::Scan(wxInputStream *stream)
+{
+    wxASSERT_MSG(m_Keyword != NULL, _("wxSearchEngine::LookFor must be called before scanning!"));
+
+    int i, j;
+    int lng = stream -> StreamSize();
+    int wrd = strlen(m_Keyword);
+    bool found = FALSE;
+    char *buf = (char*) malloc(lng + 1);
+    stream -> Read(buf, lng);
+    buf[lng] = 0;
+
+    for (i = 0; i < lng; i++)
+        if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
+
+    for (i = 0; i < lng - wrd; i++) {
+        j = 0;
+        while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
+        if (j == wrd) {found = TRUE; break;}
+    }
+
+    free(buf);
+    return found;
+}
+
+#endif