src/common/tokenzr.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        tokenzr.cpp
   3 // Purpose:     String tokenizer
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     04/22/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "tokenzr.h"
  14 #endif
  15
  16 #include "wx/object.h"
  17 #include "wx/string.h"
  18 #include "wx/tokenzr.h"
  19
  20 wxStringTokenizer::wxStringTokenizer(const wxString& to_tokenize,
  21                                      const wxString& delims,
  22                                      bool ret_delims)
  23   : wxObject()
  24 {
  25   m_string = to_tokenize;
  26   m_delims = delims;
  27   m_retdelims = ret_delims;
  28 }
  29
  30 wxStringTokenizer::~wxStringTokenizer()
  31 {
  32 }
  33
  34 off_t wxStringTokenizer::FindDelims(const wxString& str, const wxString& delims)
  35 {
  36   int i, j;
  37   register int s_len = str.Length(),
  38                len = delims.Length();
  39
  40   for (i=0;i<s_len;i++) {
  41     register char c = str[i];
  42
  43     for (j=0;j<len;j++)
  44       if (delims[j] == c)
  45         return i;
  46   }
  47   return -1;
  48 }
  49
  50 int wxStringTokenizer::CountTokens()
  51 {
  52   wxString p_string = m_string;
  53   bool found = TRUE;
  54   int pos, count = 1;
  55
  56   if (p_string.Length() == 0)
  57     return 0;
  58
  59   while (found) {
  60     pos = FindDelims(p_string, m_delims);
  61     if (pos != -1) {
  62       count++;
  63       p_string = p_string(0, pos);
  64     } else
  65       found = FALSE;
  66   }
  67   return count;
  68 }
  69
  70 bool wxStringTokenizer::HasMoreToken()
  71 {
  72   return (m_string.Length() != 0);
  73 }
  74
  75 wxString wxStringTokenizer::NextToken()
  76 {
  77   register off_t pos, pos2;
  78   wxString r_string;
  79
  80   if (m_string.IsNull())
  81     return m_string;
  82
  83   pos = FindDelims(m_string, m_delims);
  84   if (pos == -1) {
  85     r_string = m_string;
  86     m_string = (char *)NULL;
  87
  88     return r_string;
  89   }
  90
  91   if (m_retdelims) {
  92     if (!pos) {
  93       pos++;
  94       pos2 = 1;
  95     } else
  96       pos2 = pos;
  97   } else
  98       pos2 = pos + 1;
  99
 100   r_string = m_string.Left((size_t)pos);
 101   m_string = m_string.Mid((size_t)pos2);
 102
 103   return r_string;
 104 }