1 /* Tokenizing a string. 2 Copyright (C) 1999, 2002, 2006-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2007. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 3 of the 8 License, or (at your option) any later version. 9 10 This file is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #include <config.h> 19 20 /* Specification. */ 21 #include <string.h> 22 23 #include "mbuiter.h" 24 25 char * 26 mbstok_r (char *string, const char *delim, char **save_ptr) /* */ 27 { 28 if (MB_CUR_MAX > 1) 29 { 30 if (string == NULL) 31 { 32 string = *save_ptr; 33 if (string == NULL) 34 return NULL; /* reminder that end of token sequence has been 35 reached */ 36 } 37 38 /* Skip leading delimiters. */ 39 string += mbsspn (string, delim); 40 41 /* Found a token? */ 42 if (*string == '\0') 43 { 44 *save_ptr = NULL; 45 return NULL; 46 } 47 48 /* Move past the token. */ 49 { 50 char *token_end = mbspbrk (string, delim); 51 52 if (token_end != NULL) 53 { 54 /* NUL-terminate the token. */ 55 *token_end = '\0'; 56 *save_ptr = token_end + 1; 57 } 58 else 59 *save_ptr = NULL; 60 } 61 62 return string; 63 } 64 else 65 return strtok_r (string, delim, save_ptr); 66 }