Ejemplo n.º 1
0
static int
unescape(gh_buf *ob, const uint8_t *src, size_t size, bool unescape_plus)
{
	size_t  i = 0, org;

	while (i < size) {
		org = i;
		while (i < size && src[i] != '%' && src[i] != '+')
			i++;

		if (likely(i > org)) {
			if (unlikely(org == 0)) {
				if (i >= size)
					return 0;

				gh_buf_grow(ob, HOUDINI_UNESCAPED_SIZE(size));
			}

			gh_buf_put(ob, src + org, i - org);
		}

		/* escaping */
		if (i >= size)
			break;

		if (src[i++] == '+') {
			gh_buf_putc(ob, unescape_plus ? ' ' : '+');
			continue;
		}

		if (i + 1 < size && _isxdigit(src[i]) && _isxdigit(src[i + 1])) {
			unsigned char new_char = (hex2c(src[i]) << 4) + hex2c(src[i + 1]);
			gh_buf_putc(ob, new_char);
			i += 2;
		} else {
			gh_buf_putc(ob, '%');
		}
	}

	return 1;
}
Ejemplo n.º 2
0
int
houdini_unescape_html(cmark_strbuf *ob, const uint8_t *src, size_t size)
{
	size_t  i = 0, org, ent;

	while (i < size) {
		org = i;
		while (i < size && src[i] != '&')
			i++;

		if (likely(i > org)) {
			if (unlikely(org == 0)) {
				if (i >= size)
					return 0;

				cmark_strbuf_grow(ob, HOUDINI_UNESCAPED_SIZE(size));
			}

			cmark_strbuf_put(ob, src + org, i - org);
		}

		/* escaping */
		if (i >= size)
			break;

		i++;

		ent = houdini_unescape_ent(ob, src + i, size - i);
		i += ent;

		/* not really an entity */
		if (ent == 0)
			cmark_strbuf_putc(ob, '&');
	}

	return 1;
}