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