lex *lex_create(const char *input)
{
lex *c;
c = calloc(1, sizeof(*c));
if (c == NULL)
return NULL;
c->peek = ' ';
c->sym = sym_create();
if (c->sym == NULL)
goto oom;
c->lexbuf = malloc(256);
if (c->lexbuf == NULL)
goto oom;
c->lexbufsz = 256;
c->input = input;
return c;
oom:
sym_destroy(c->sym);
free(c->lexbuf);
free(c);
return NULL;
}
void lex_destroy(lex *doomed)
{
if (doomed == NULL)
return;
sym_destroy(doomed->sym);
free(doomed->lexbuf);
free(doomed);
}
void zebra_image_scanner_destroy (zebra_image_scanner_t *iscn)
{
if(iscn->scn)
zebra_scanner_destroy(iscn->scn);
iscn->scn = NULL;
if(iscn->dcode)
zebra_decoder_destroy(iscn->dcode);
iscn->dcode = NULL;
while(iscn->syms) {
zebra_symbol_t *next = iscn->syms->next;
sym_destroy(iscn->syms);
iscn->syms = next;
}
free(iscn);
}