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C split/join functions, using strtok_r -- Source
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| #include <string.h> | |
| #include <stdlib.h> | |
| #include <stdio.h> | |
| #include "string_sj.h" | |
| int str_split(const char* src, const char* delims, char*** dest) { | |
| char *s = strdup(src); | |
| char *c, *saveptr, *tmp; | |
| void *_tmp; | |
| int num_tokens = 0, num_size = 10; | |
| c = strtok_r(s, delims, &saveptr); | |
| if (c == NULL) | |
| return 0; | |
| *dest = malloc(num_size * sizeof(char*)); | |
| if (*dest == NULL) | |
| return -1; | |
| tmp = strdup(c); | |
| if (tmp == NULL) { | |
| free(*dest); | |
| free(s); | |
| *dest = NULL; | |
| return -1; | |
| } | |
| (*dest)[num_tokens] = tmp; | |
| num_tokens++; | |
| while ((c = strtok_r(NULL, delims, &saveptr)) != NULL) { | |
| if (num_tokens == num_size) { | |
| num_size += 10; | |
| _tmp = realloc(*dest, num_size*sizeof(char*)); | |
| if (!_tmp) { | |
| fprintf(stderr, "ERROR: split() cannot realloc() memory needed."); | |
| return -1; | |
| } | |
| *dest = (char**)_tmp; | |
| } | |
| tmp = strdup(c); | |
| if (tmp == NULL) { | |
| free(*dest); | |
| free(s); | |
| *dest = NULL; | |
| return -1; | |
| } | |
| (*dest)[num_tokens] = tmp; | |
| num_tokens++; | |
| } | |
| return num_tokens; | |
| } | |
| char *str_join(char** items, int start, int end, const char* delim) { | |
| int i; | |
| char *tmp = NULL; | |
| int dlen = strlen(delim); | |
| int total_size = 0; | |
| if ((end - start) < 1 || start >= end) { | |
| return strdup(""); | |
| } else if ((end - start) == 1) { | |
| return strdup(items[start]); | |
| } | |
| total_size += strlen(items[start]); | |
| for (i = start+1; i < end; i++) { | |
| total_size += dlen; | |
| total_size += strlen(items[i]); | |
| } | |
| tmp = (char*)malloc(total_size * sizeof(char)); | |
| if (tmp == NULL) | |
| return NULL; | |
| strcat(tmp, items[start]); | |
| for (i = start+1; i < end; i++) { | |
| strcat(tmp, delim); | |
| strcat(tmp, items[i]); | |
| } | |
| return tmp; | |
| } |
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