src/search/normal.c

   1 /*
   2    Search text engine.
   3    Plain search
   4
   5    Copyright (C) 2009 The Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2009.
   9
  10    This file is part of the Midnight Commander.
  11
  12    The Midnight Commander is free software; you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation; either version 2 of the
  15    License, or (at your option) any later version.
  16
  17    The Midnight Commander is distributed in the hope that it will be
  18    useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  19    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20    General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program; if not, write to the Free Software
  24    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  25    MA 02110-1301, USA.
  26  */
  27
  28 #include <config.h>
  29
  30
  31 #include "../src/global.h"
  32 #include "../src/search/search.h"
  33 #include "../src/search/internal.h"
  34 #include "../src/strutil.h"
  35 #include "../src/charsets.h"
  36
  37 /*** global variables ****************************************************************************/
  38
  39 /*** file scope macro definitions ****************************************************************/
  40
  41 /*** file scope type declarations ****************************************************************/
  42
  43 /*** file scope variables ************************************************************************/
  44
  45 /*** file scope functions ************************************************************************/
  46
  47 static GString *
  48 mc_search__normal_translate_to_regex (gchar * str, gsize * len)
  49 {
  50     GString *buff = g_string_new ("");
  51     gsize orig_len = *len;
  52     gsize loop = 0;
  53
  54     while (loop < orig_len) {
  55         switch (str[loop]) {
  56         case '*':
  57         case '?':
  58         case ',':
  59         case '{':
  60         case '}':
  61         case '[':
  62         case ']':
  63         case '\\':
  64         case '+':
  65         case '.':
  66         case '$':
  67         case '(':
  68         case ')':
  69         case '^':
  70         case '-':
  71         case '|':
  72             g_string_append_c (buff, '\\');
  73             g_string_append_c (buff, str[loop]);
  74             loop++;
  75             continue;
  76             break;
  77         }
  78         g_string_append_c (buff, str[loop]);
  79         loop++;
  80     }
  81     *len = buff->len;
  82     return buff;
  83 }
  84
  85 /*** public functions ****************************************************************************/
  86
  87 void
  88 mc_search__cond_struct_new_init_normal (const char *charset, mc_search_t * lc_mc_search,
  89                                         mc_search_cond_t * mc_search_cond)
  90 {
  91     GString *tmp =
  92         mc_search__normal_translate_to_regex (mc_search_cond->str->str, &mc_search_cond->len);
  93
  94     g_string_free (mc_search_cond->str, TRUE);
  95     if (lc_mc_search->whole_words) {
  96         g_string_prepend (tmp, "\\b");
  97         g_string_append (tmp, "\\b");
  98     }
  99     mc_search_cond->str = tmp;
 100
 101     mc_search__cond_struct_new_init_regex (charset, lc_mc_search, mc_search_cond);
 102
 103 }
 104
 105 /* --------------------------------------------------------------------------------------------- */
 106
 107 gboolean
 108 mc_search__run_normal (mc_search_t * lc_mc_search, const void *user_data,
 109                        gsize start_search, gsize end_search, gsize * found_len)
 110 {
 111     return mc_search__run_regex (lc_mc_search, user_data, start_search, end_search, found_len);
 112 }
 113
 114 /* --------------------------------------------------------------------------------------------- */
 115 GString *
 116 mc_search_normal_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
 117 {
 118     (void) lc_mc_search;
 119     return g_string_new_len (replace_str->str, replace_str->len);
 120 }