コード例 #1
0
//    a                b        c
// <sought> <replacement> [<start>]
// <start> <length> <replacement>
static inline struct variable *cfnc_replace(struct context *context)
{
    struct variable *args = (struct variable*)stack_pop(context->operand_stack);
    struct variable *self = (struct variable*)array_get(args->list.ordered, 0);
    struct variable *a = (struct variable*)array_get(args->list.ordered, 1);
    struct variable *b = (struct variable*)array_get(args->list.ordered, 2);
    struct variable *c = args->list.ordered->length > 3 ?
        (struct variable*)array_get(args->list.ordered, 3) : NULL;

    null_check(self);
    null_check(b);
    assert_message(self->type == VAR_STR, "searching in a non-string");

    struct byte_array *replaced = NULL;

    if (a->type == VAR_STR) { // find a, replace with b

        assert_message(b->type == VAR_STR, "non-string replacement");
        int32_t where = 0;

        if (c) { // replace first match after index c

            assert_message(c->type == VAR_INT, "non-integer index");
            if (((where = byte_array_find(self->str, a->str, c->integer)) >= 0))
                replaced = byte_array_replace(self->str, b->str, where, b->str->length);

        } else {

            replaced = byte_array_replace_all(self->str, a->str, b->str);
        }

    } else if (a->type == VAR_INT ) { // replace at index a, length b, insert c

        assert_message(a || a->type == VAR_INT, "non-integer count");
        assert_message(b || b->type == VAR_INT, "non-integer start");
        replaced = byte_array_replace(self->str, c->str, a->integer, b->integer);

    } else exit_message("replacement is not a string");

    null_check(replaced);
    struct variable *result = variable_new_str(context, replaced);
    byte_array_del(replaced);

    return result;
}
コード例 #2
0
ファイル: struct.c プロジェクト: nqminh/filagree
struct byte_array *byte_array_replace_all(struct byte_array *original, struct byte_array *a, struct byte_array *b)
{
    /*DEBUGPRINT("replace in %s: %s -> %s\n",
               byte_array_to_string(original),
               byte_array_to_string(a),
               byte_array_to_string(b));*/

    struct byte_array *replaced = byte_array_copy(original);
    int32_t where = 0;

    for(;;) { // replace all

        if ((where = byte_array_find(replaced, a, where)) < 0)
            break;
        struct byte_array *replaced2 = byte_array_replace(replaced, b, where++, a->length);
        byte_array_del(replaced);
        replaced = replaced2;
    }
    return replaced;
}