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/*
Search text engine.
Glob-style pattern matching
Copyright (C) 2009-2022
Free Software Foundation, Inc.
Written by:
Slava Zanko <slavazanko@gmail.com>, 2009.
This file is part of the Midnight Commander.
The Midnight Commander is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
The Midnight Commander is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "lib/global.h"
#include "lib/strutil.h"
#include "lib/search.h"
#include "lib/strescape.h"
#include "internal.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
static GString *
mc_search__glob_translate_to_regex (const GString * astr)
{
const char *str = astr->str;
GString *buff;
gsize loop;
gboolean inside_group = FALSE;
buff = g_string_sized_new (32);
for (loop = 0; loop < astr->len; loop++)
{
switch (str[loop])
{
case '*':
if (!strutils_is_char_escaped (str, &(str[loop])))
{
g_string_append (buff, inside_group ? ".*" : "(.*)");
continue;
}
break;
case '?':
if (!strutils_is_char_escaped (str, &(str[loop])))
{
g_string_append (buff, inside_group ? "." : "(.)");
continue;
}
break;
case ',':
if (!strutils_is_char_escaped (str, &(str[loop])))
{
g_string_append_c (buff, inside_group ? '|' : ',');
continue;
}
break;
case '{':
if (!strutils_is_char_escaped (str, &(str[loop])))
{
g_string_append_c (buff, '(');
inside_group = TRUE;
continue;
}
break;
case '}':
if (!strutils_is_char_escaped (str, &(str[loop])))
{
g_string_append_c (buff, ')');
inside_group = FALSE;
continue;
}
break;
case '+':
case '.':
case '$':
case '(':
case ')':
case '^':
g_string_append_c (buff, '\\');
break;
default:
break;
}
g_string_append_c (buff, str[loop]);
}
return buff;
}
/* --------------------------------------------------------------------------------------------- */
static GString *
mc_search__translate_replace_glob_to_regex (const char *str)
{
GString *buff;
char cnt = '0';
gboolean escaped_mode = FALSE;
buff = g_string_sized_new (32);
while (*str != '\0')
{
char c = *str++;
switch (c)
{
case '\\':
if (!escaped_mode)
{
escaped_mode = TRUE;
g_string_append_c (buff, '\\');
continue;
}
break;
case '*':
case '?':
if (!escaped_mode)
{
g_string_append_c (buff, '\\');
c = ++cnt;
}
break;
case '&':
if (!escaped_mode)
g_string_append_c (buff, '\\');
break;
default:
break;
}
g_string_append_c (buff, c);
escaped_mode = FALSE;
}
return buff;
}
/*** public functions ****************************************************************************/
void
mc_search__cond_struct_new_init_glob (const char *charset, mc_search_t * lc_mc_search,
mc_search_cond_t * mc_search_cond)
{
GString *tmp;
tmp = mc_search__glob_translate_to_regex (mc_search_cond->str);
g_string_free (mc_search_cond->str, TRUE);
if (lc_mc_search->is_entire_line)
{
g_string_prepend_c (tmp, '^');
g_string_append_c (tmp, '$');
}
mc_search_cond->str = tmp;
mc_search__cond_struct_new_init_regex (charset, lc_mc_search, mc_search_cond);
}
/* --------------------------------------------------------------------------------------------- */
gboolean
mc_search__run_glob (mc_search_t * lc_mc_search, const void *user_data,
gsize start_search, gsize end_search, gsize * found_len)
{
return mc_search__run_regex (lc_mc_search, user_data, start_search, end_search, found_len);
}
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search_glob_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
{
GString *repl, *res;
repl = mc_search__translate_replace_glob_to_regex (replace_str->str);
res = mc_search_regex_prepare_replace_str (lc_mc_search, repl);
g_string_free (repl, TRUE);
return res;
}
/* --------------------------------------------------------------------------------------------- */
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