mc/lib/search/lib.c

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/*
Search text engine.
Common share code for module.
Copyright (C) 2009-2014
Free Software Foundation, Inc.
Written by:
Slava Zanko <slavazanko@gmail.com>, 2009, 2011
Andrew Borodin <aborodin@vmail.ru>, 2013
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 <stdlib.h>
#include <sys/types.h>
#include "lib/global.h"
#include "lib/strutil.h"
#include "lib/search.h"
#ifdef HAVE_CHARSET
#include "lib/charsets.h"
#endif
#include "internal.h"
/*** global variables ****************************************************************************/
const char *STR_E_NOTFOUND = N_("Search string not found");
const char *STR_E_UNKNOWN_TYPE = N_("Not implemented yet");
const char *STR_E_RPL_NOT_EQ_TO_FOUND =
N_("Num of replace tokens not equal to num of found tokens");
const char *STR_E_RPL_INVALID_TOKEN = N_("Invalid token number %d");
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
/*** public functions ****************************************************************************/
gchar *
mc_search__recode_str (const char *str, gsize str_len,
const char *charset_from, const char *charset_to, gsize * bytes_written)
{
gchar *ret;
gsize bytes_read;
GIConv conv;
if (charset_from == NULL || charset_to == NULL
|| g_ascii_strcasecmp (charset_to, charset_from) == 0)
{
*bytes_written = str_len;
return g_strndup (str, str_len);
}
conv = g_iconv_open (charset_to, charset_from);
if (conv == INVALID_CONV)
{
*bytes_written = str_len;
return g_strndup (str, str_len);
}
ret = g_convert_with_iconv (str, str_len, conv, &bytes_read, bytes_written, NULL);
g_iconv_close (conv);
if (ret == NULL)
{
*bytes_written = str_len;
return g_strndup (str, str_len);
}
return ret;
}
/* --------------------------------------------------------------------------------------------- */
gchar *
mc_search__get_one_symbol (const char *charset, const char *str, gsize str_len,
gboolean * just_letters)
{
gchar *converted_str, *next_char;
gsize tmp_len;
#ifdef HAVE_CHARSET
gsize converted_str_len;
gchar *converted_str2;
if (charset == NULL)
charset = cp_source;
converted_str = mc_search__recode_str (str, str_len, charset, cp_display, &converted_str_len);
#else
(void) charset;
converted_str = g_strndup (str, str_len);
#endif
next_char = (char *) str_cget_next_char (converted_str);
tmp_len = next_char - converted_str;
converted_str[tmp_len] = '\0';
#ifdef HAVE_CHARSET
converted_str2 =
mc_search__recode_str (converted_str, tmp_len, cp_display, charset, &converted_str_len);
#endif
if (just_letters)
{
if (str_isalnum (converted_str) && !str_isdigit (converted_str))
*just_letters = TRUE;
else
*just_letters = FALSE;
}
#ifdef HAVE_CHARSET
g_free (converted_str);
return converted_str2;
#else
return converted_str;
#endif
}
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search__tolower_case_str (const char *charset, const char *str, gsize str_len)
{
GString *ret;
#ifdef HAVE_CHARSET
gchar *converted_str, *tmp_str1, *tmp_str2, *tmp_str3;
gsize converted_str_len;
gsize tmp_len;
if (charset == NULL)
charset = cp_source;
tmp_str2 = converted_str =
mc_search__recode_str (str, str_len, charset, cp_display, &converted_str_len);
tmp_len = converted_str_len + 1;
tmp_str3 = tmp_str1 = g_strdup (converted_str);
while (str_tolower (tmp_str1, &tmp_str2, &tmp_len))
tmp_str1 += str_length_char (tmp_str1);
g_free (tmp_str3);
tmp_str2 =
mc_search__recode_str (converted_str, converted_str_len, cp_display, charset, &tmp_len);
g_free (converted_str);
ret = g_string_new_len (tmp_str2, tmp_len);
g_free (tmp_str2);
return ret;
#else
const gchar *tmp_str1 = str;
gchar *converted_str, *tmp_str2;
gsize converted_str_len = str_len + 1;
(void) charset;
tmp_str2 = converted_str = g_strndup (str, str_len);
while (str_tolower (tmp_str1, &tmp_str2, &converted_str_len))
tmp_str1 += str_length_char (tmp_str1);
ret = g_string_new_len (converted_str, str_len);
g_free (converted_str);
return ret;
#endif
}
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search__toupper_case_str (const char *charset, const char *str, gsize str_len)
{
GString *ret;
#ifdef HAVE_CHARSET
gchar *converted_str, *tmp_str1, *tmp_str2, *tmp_str3;
gsize converted_str_len;
gsize tmp_len;
if (charset == NULL)
charset = cp_source;
tmp_str2 = converted_str =
mc_search__recode_str (str, str_len, charset, cp_display, &converted_str_len);
tmp_len = converted_str_len + 1;
tmp_str3 = tmp_str1 = g_strdup (converted_str);
while (str_toupper (tmp_str1, &tmp_str2, &tmp_len))
tmp_str1 += str_length_char (tmp_str1);
g_free (tmp_str3);
tmp_str2 =
mc_search__recode_str (converted_str, converted_str_len, cp_display, charset, &tmp_len);
g_free (converted_str);
ret = g_string_new_len (tmp_str2, tmp_len);
g_free (tmp_str2);
return ret;
#else
const gchar *tmp_str1 = str;
gchar *converted_str, *tmp_str2;
gsize converted_str_len = str_len + 1;
(void) charset;
tmp_str2 = converted_str = g_strndup (str, str_len);
while (str_toupper (tmp_str1, &tmp_str2, &converted_str_len))
tmp_str1 += str_length_char (tmp_str1);
ret = g_string_new_len (converted_str, str_len);
g_free (converted_str);
return ret;
#endif
}
/* --------------------------------------------------------------------------------------------- */
gchar **
mc_search_get_types_strings_array (size_t * num)
{
gchar **ret;
int lc_index;
size_t n;
const mc_search_type_str_t *type_str;
const mc_search_type_str_t *types_str = mc_search_types_list_get (&n);
ret = g_try_new0 (char *, n + 1);
if (ret == NULL)
return NULL;
for (lc_index = 0, type_str = types_str; type_str->str != NULL; type_str++, lc_index++)
ret[lc_index] = g_strdup (type_str->str);
/* don't count last NULL item */
if (num != NULL)
*num = (size_t) lc_index;
return ret;
}
/* --------------------------------------------------------------------------------------------- */