From ffccd5b2b05243e7976db80f90f453dccfae9886 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 22:22:03 +0200 Subject: Adding upstream version 3:4.8.30. Signed-off-by: Daniel Baumann --- lib/strutil/replace.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 lib/strutil/replace.c (limited to 'lib/strutil/replace.c') diff --git a/lib/strutil/replace.c b/lib/strutil/replace.c new file mode 100644 index 0000000..99356ee --- /dev/null +++ b/lib/strutil/replace.c @@ -0,0 +1,104 @@ +/* + Functions for replacing substrings in strings. + + Copyright (C) 2013-2023 + Free Software Foundation, Inc. + + Written by: + Slava Zanko , 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 . + */ + +#include + +#include "lib/global.h" +#include "lib/strescape.h" +#include "lib/strutil.h" + +/*** global variables ****************************************************************************/ + +/*** file scope macro definitions ****************************************************************/ + +/*** file scope type declarations ****************************************************************/ + +/*** forward declarations (file scope functions) *************************************************/ + +/*** file scope variables ************************************************************************/ + +/* --------------------------------------------------------------------------------------------- */ +/*** file scope functions ************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ +/** + * Replace all substrings 'needle' in string 'haystack' by 'replacement'. + * If the 'needle' in the 'haystack' is escaped by backslash, + * then this occurrence isn't be replaced. + * + * @param haystack string contains substrings for replacement. Cannot be NULL. + * @param needle string for search. Cannot be NULL. + * @param replacement string for replace. Cannot be NULL. + * @return newly allocated string with replaced substrings or NULL if @haystack is empty. + */ + +char * +str_replace_all (const char *haystack, const char *needle, const char *replacement) +{ + size_t needle_len, replacement_len; + GString *return_str = NULL; + char *needle_in_str; + + needle_len = strlen (needle); + replacement_len = strlen (replacement); + + while ((needle_in_str = strstr (haystack, needle)) != NULL) + { + if (return_str == NULL) + return_str = g_string_sized_new (32); + + if (strutils_is_char_escaped (haystack, needle_in_str)) + { + char *backslash = needle_in_str - 1; + + if (haystack != backslash) + g_string_append_len (return_str, haystack, backslash - haystack); + g_string_append_len (return_str, needle_in_str, needle_in_str - backslash); + haystack = needle_in_str + 1; + } + else + { + if (needle_in_str != haystack) + g_string_append_len (return_str, haystack, needle_in_str - haystack); + g_string_append_len (return_str, replacement, replacement_len); + haystack = needle_in_str + needle_len; + } + } + + if (*haystack != '\0') + { + if (return_str == NULL) + return strdup (haystack); + + g_string_append (return_str, haystack); + } + + return (return_str != NULL ? g_string_free (return_str, FALSE) : NULL); +} + +/* --------------------------------------------------------------------------------------------- */ -- cgit v1.2.3