1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2011 Erwan Velu - All Rights Reserved 4 * 5 * Permission is hereby granted, free of charge, to any person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, 9 * copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom 11 * the Software is furnished to do so, subject to the following 12 * conditions: 13 * 14 * The above copyright notice and this permission notice shall 15 * be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 19 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 24 * OTHER DEALINGS IN THE SOFTWARE. 25 * 26 * ----------------------------------------------------------------------- 27 */ 28 29 #include <string.h> 30 #include <stdlib.h> 31 32 char *strreplace(const char *string, const char *string_to_replace, 33 const char *string_to_insert) 34 { 35 char *token = NULL; 36 char *out = NULL; 37 38 size_t slen, srlen, silen; 39 40 token = strstr(string, string_to_replace); 41 if (!token) 42 return strdup(string); 43 44 slen = strlen(string); 45 srlen = strlen(string_to_replace); 46 silen = strlen(string_to_insert); 47 48 out = malloc(slen - srlen + silen + 1); 49 if (!out) 50 return NULL; 51 52 memcpy(out, string, token - string); 53 memcpy(out + (token - string), string_to_insert, silen); 54 memcpy(out + (token - string) + silen, token + srlen, 55 slen - srlen - (token - string) + 1); 56 57 return out; 58 } 59
