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#include <merror.h>
#include <stdlib.h>
#include "link.h"
int strtab_init(struct string_table *strtab)
{
strtab->len = 1;
strtab->data = malloc(1);
if (strtab->data == NULL) {
PERROR("cannot alloc");
return M_ERROR;
}
strtab->data[0] = '\0';
return M_SUCCESS;
}
void strtab_free(struct string_table *strtab)
{
free(strtab->data);
}
int strtab_push(struct string_table *strtab, const char *str, size_t *res)
{
if (strtab_get(strtab, str, res) == M_SUCCESS)
return M_SUCCESS;
size_t len = strlen(str);
char *new = realloc(strtab->data, strtab->len + len + 1);
if (new == NULL) {
PERROR("cannot realloc");
return M_ERROR;
}
strtab->data = new;
memcpy(strtab->data + strtab->len, str, len + 1);
if (res != NULL)
*res = strtab->len;
strtab->len += len + 1;
return M_SUCCESS;
}
int strtab_get(struct string_table *strtab, const char *str, size_t *res)
{
for (size_t i = 0; i < strtab->len; i++) {
if (strcmp(strtab->data + i, str) == 0) {
if (res != NULL)
*res = i;
return M_SUCCESS;
}
}
return M_ERROR;
}
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