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/*
Functions for replacing substrings in strings.
Copyright (C) 2013-2022
Free Software Foundation, Inc.
Written by:
Slava Zanko <slavazanko@gmail.com>, 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 "lib/global.h"
#include "lib/strescape.h"
#include "lib/strutil.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static GString *
str_ptr_array_join (const GPtrArray * str_splints)
{
GString *return_str;
guint i;
return_str = g_string_sized_new (32);
for (i = 0; i < str_splints->len; i++)
g_string_append (return_str, g_ptr_array_index (str_splints, i));
return return_str;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
* Replace all substrings 'needle' in string 'haystack' by 'replacement'.
* If the 'needle' in the 'haystack' will be escaped by backslash,
* then this occurrence isn't be replaced.
*
* @param haystack string contains substrings for replacement
* @param needle string for search
* @param replacement string for replace
* @return newly allocated string with replaced substrings
*/
char *
str_replace_all (const char *haystack, const char *needle, const char *replacement)
{
size_t needle_len;
GPtrArray *str_splints;
GString *return_str;
needle_len = strlen (needle);
str_splints = g_ptr_array_new_with_free_func (g_free);
while (TRUE)
{
char *needle_in_str;
needle_in_str = strstr (haystack, needle);
if (needle_in_str == NULL)
{
if (*haystack != '\0')
g_ptr_array_add (str_splints, g_strdup (haystack));
break;
}
if (strutils_is_char_escaped (haystack, needle_in_str))
{
char *backslash = needle_in_str - 1;
if (haystack != backslash)
g_ptr_array_add (str_splints, g_strndup (haystack, backslash - haystack));
g_ptr_array_add (str_splints, g_strndup (backslash + 1, needle_in_str - backslash));
haystack = needle_in_str + 1;
continue;
}
if (needle_in_str - haystack > 0)
g_ptr_array_add (str_splints, g_strndup (haystack, needle_in_str - haystack));
g_ptr_array_add (str_splints, g_strdup (replacement));
haystack = needle_in_str + needle_len;
}
return_str = str_ptr_array_join (str_splints);
g_ptr_array_free (str_splints, TRUE);
return g_string_free (return_str, FALSE);
}
/* --------------------------------------------------------------------------------------------- */
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