src/html/search.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        search.cpp
   3 // Purpose:     search engine
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/defs.h"
  19 #if wxUSE_HTML
  20
  21 #ifdef __BORDLANDC__
  22 #pragma hdrstop
  23 #endif
  24
  25 #ifndef WXPRECOMP
  26 #include <wx/wx.h>
  27 #endif
  28
  29 #include "wx/html/helpdata.h"
  30
  31
  32
  33 //--------------------------------------------------------------------------------
  34 // wxSearchEngine
  35 //--------------------------------------------------------------------------------
  36
  37 void wxSearchEngine::LookFor(const wxString& keyword)
  38 {
  39     if (m_Keyword) delete[] m_Keyword;
  40     m_Keyword = new wxChar[keyword.Length() + 1];
  41     wxStrcpy(m_Keyword, keyword.c_str());
  42     for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
  43         if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
  44             m_Keyword[i] += wxT('a') - wxT('A');
  45 }
  46
  47
  48
  49 bool wxSearchEngine::Scan(wxInputStream *stream)
  50 {
  51     wxASSERT_MSG(m_Keyword != NULL, _("wxSearchEngine::LookFor must be called before scanning!"));
  52
  53     int i, j;
  54     int lng = stream ->GetSize();
  55     int wrd = wxStrlen(m_Keyword);
  56     bool found = FALSE;
  57     char *buf = new char[lng + 1];
  58     stream -> Read(buf, lng);
  59     buf[lng] = 0;
  60
  61     for (i = 0; i < lng; i++)
  62         if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
  63
  64     for (i = 0; i < lng - wrd; i++) {
  65         j = 0;
  66         while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
  67         if (j == wrd) {found = TRUE; break;}
  68     }
  69
  70     delete[] buf;
  71     return found;
  72 }
  73
  74 #endif