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/*
Search text engine.
Common share code for module.
Copyright (C) 2009-2023
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 ****************************************************************************/
/* *INDENT-OFF* */
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");
/* *INDENT-ON* */
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
typedef gboolean (*case_conv_fn) (const char *ch, char **out, size_t * remain);
/*** forward declarations (file scope functions) *************************************************/
/*** file scope variables ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static GString *
mc_search__change_case_str (const char *charset, const GString * str, case_conv_fn case_conv)
{
GString *ret;
const char *src_ptr;
gchar *dst_str;
gchar *dst_ptr;
gsize dst_len;
#ifdef HAVE_CHARSET
GString *converted_str;
if (charset == NULL)
charset = cp_source;
converted_str = mc_search__recode_str (str->str, str->len, charset, cp_display);
dst_len = converted_str->len + 1; /* +1 is required for str_toupper/str_tolower */
dst_str = g_malloc (dst_len);
for (src_ptr = converted_str->str, dst_ptr = dst_str;
case_conv (src_ptr, &dst_ptr, &dst_len); src_ptr += str_length_char (src_ptr))
;
*dst_ptr = '\0';
dst_len = converted_str->len;
g_string_free (converted_str, TRUE);
ret = mc_search__recode_str (dst_str, dst_len, cp_display, charset);
g_free (dst_str);
#else
(void) charset;
dst_len = str->len + 1; /* +1 is required for str_toupper/str_tolower */
dst_str = g_malloc (dst_len);
for (src_ptr = str->str, dst_ptr = dst_str;
case_conv (src_ptr, &dst_ptr, &dst_len); src_ptr += str_length_char (src_ptr))
;
*dst_ptr = '\0';
ret = g_string_new_len (dst_str, dst_len);
g_free (dst_str);
#endif
return ret;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search__recode_str (const char *str, gsize str_len, const char *charset_from,
const char *charset_to)
{
GString *ret = NULL;
if (charset_from != NULL && charset_to != NULL
&& g_ascii_strcasecmp (charset_to, charset_from) != 0)
{
GIConv conv;
conv = g_iconv_open (charset_to, charset_from);
if (conv != INVALID_CONV)
{
gchar *val;
gsize bytes_read = 0;
gsize bytes_written = 0;
val = g_convert_with_iconv (str, str_len, conv, &bytes_read, &bytes_written, NULL);
g_iconv_close (conv);
if (val != NULL)
{
ret = g_string_new_len (val, bytes_written);
g_free (val);
}
}
}
if (ret == NULL)
ret = g_string_new_len (str, str_len);
return ret;
}
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search__get_one_symbol (const char *charset, const char *str, gsize str_len,
gboolean * just_letters)
{
GString *converted_str;
const gchar *next_char;
#ifdef HAVE_CHARSET
GString *converted_str2;
if (charset == NULL)
charset = cp_source;
converted_str = mc_search__recode_str (str, str_len, charset, cp_display);
#else
(void) charset;
converted_str = g_string_new_len (str, str_len);
#endif
next_char = str_cget_next_char (converted_str->str);
g_string_set_size (converted_str, (gsize) (next_char - converted_str->str));
#ifdef HAVE_CHARSET
converted_str2 =
mc_search__recode_str (converted_str->str, converted_str->len, cp_display, charset);
#endif
if (just_letters != NULL)
*just_letters = str_isalnum (converted_str->str) && !str_isdigit (converted_str->str);
#ifdef HAVE_CHARSET
g_string_free (converted_str, TRUE);
return converted_str2;
#else
return converted_str;
#endif
}
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search__tolower_case_str (const char *charset, const GString * str)
{
return mc_search__change_case_str (charset, str, str_tolower);
}
/* --------------------------------------------------------------------------------------------- */
GString *
mc_search__toupper_case_str (const char *charset, const GString * str)
{
return mc_search__change_case_str (charset, str, str_toupper);
}
/* --------------------------------------------------------------------------------------------- */
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;
}
/* --------------------------------------------------------------------------------------------- */
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