Function rune_altern_decode

ccan/ccan/rune/coding.c:216–257

Sets *more on success: true if another altern follows */

/* Sets *more on success: true if another altern follows */
static struct rune_altern *rune_altern_decode(const tal_t *ctx,
					      const char **data, size_t *len,
					      bool *more)
{
	struct rune_altern *alt = tal(ctx, struct rune_altern);
	char *value;
	size_t strlen;
	char c;

        /* Swallow field up to possible conditional */
	strlen = rune_altern_fieldname_len(*data, *len);
	alt->fieldname = tal_strndup(alt, *data, strlen);
	*data += strlen;
	*len -= strlen;

	/* Grab conditional */
	if (!pull_char(data, len, &c) || !rune_condition_is_valid(c))
		return tal_free(alt);

	alt->condition = c;

	/* Assign worst case. */
	value = tal_arr(alt, char, *len + 1);
	strlen = 0;
	*more = false;
	while (*len && pull_char(data, len, &c)) {
		if (c == '|') {
			*more = true;
			break;
		}
		if (c == '&')
			break;

		if (c == '\\' && !pull_char(data, len, &c))
			return tal_free(alt);
		value[strlen++] = c;
	}
	value[strlen] = '\0';
	tal_resize(&value, strlen + 1);
	alt->value = value;
	return alt;
}

static struct rune_restr *rune_restr_decode(const tal_t *ctx,
					    const char **data, size_t *len)