78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
#include "tor_os.h"
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void tor_os_create(struct tor_os_str* os, char* file, size_t size) {
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os->size = size;
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os->filled = 0;
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os->file = malloc(sizeof(char) * (strlen(file) + 1));
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if (os->file == NULL) goto mem_error;
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strcpy(os->file, file);
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os->list = malloc(size * sizeof(char*));
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if (os->list == NULL) goto mem_error;
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return;
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mem_error:
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fprintf(stderr, "unable to allocate memory\n");
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exit(EXIT_FAILURE);
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}
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char** tor_os_append_cursor(struct tor_os_str* os) {
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if (os->filled == os->size) {
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return NULL;
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}
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char** cur = os->list + os->filled;
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os->filled++;
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*cur = NULL;
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return cur;
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}
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void tor_os_read (struct tor_os_str* os) {
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FILE* fd = NULL;
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fd = fopen(os->file, "r");
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if (fd == NULL) {
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return;
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}
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size_t len = 0;
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int n = 0;
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while (1) {
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char** dst = tor_os_append_cursor(os);
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if (dst == NULL) break;
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if (getline(dst,&len,fd) == -1) break;
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}
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fclose(fd);
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}
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void tor_os_free(struct tor_os_str* os) {
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for (int i = 0; i < os->filled; i++) {
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free(os->list[i]);
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}
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free(os->list);
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free(os->file);
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}
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void tor_os_persist(struct tor_os_str* os) {
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FILE* fd = NULL;
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fd = fopen(os->file, "w");
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if (fd == NULL) {
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fprintf(stderr, "unable to open file for writing\n");
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exit(EXIT_FAILURE);
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}
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for (int i = 0; i < os->filled; i++) {
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printf("%s\n", os->list[i]);
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fprintf(fd, "%s\n", os->list[i]);
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}
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fclose(fd);
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}
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int tor_os_append(struct tor_os_str* os, char* entry) {
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char** target = tor_os_append_cursor (os);
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if (target == NULL) return -1;
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*target = malloc(sizeof(char) * (strlen(entry) + 1));
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if (*target == NULL) return -1;
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strcpy (*target, entry);
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return 0;
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}
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