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