From 1cb7f8f9ae768b680477212c678a3111fca71ef7 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Thu, 27 Nov 2014 15:56:06 +0100
Subject: html: Fix parsing of @-rules in CSS.

---
 source/html/css-parse.c | 48 ++++++++++++++++++------------------------------
 1 file changed, 18 insertions(+), 30 deletions(-)

(limited to 'source/html')

diff --git a/source/html/css-parse.c b/source/html/css-parse.c
index db17e431..18f33e16 100644
--- a/source/html/css-parse.c
+++ b/source/html/css-parse.c
@@ -789,42 +789,30 @@ static fz_css_rule *parse_rule(struct lexbuf *buf)
 	return fz_new_css_rule(buf->ctx, s, p);
 }
 
-static void parse_media_list(struct lexbuf *buf)
-{
-	fz_css_rule *r;
-
-	while (buf->lookahead != '}' && buf->lookahead != EOF)
-	{
-		r = parse_rule(buf);
-		fz_free_css(buf->ctx, r);
-	}
-}
-
 static void parse_at_rule(struct lexbuf *buf)
 {
-	fz_css_property *p;
-	fz_css_value *v;
-
 	expect(buf, CSS_KEYWORD);
-	if (accept(buf, '{')) /* @page */
-	{
-		p = parse_declaration_list(buf);
-		fz_free_css_property(buf->ctx, p);
-		expect(buf, '}');
-	}
-	else
+
+	/* skip until '{' or ';' */
+	while (buf->lookahead != EOF)
 	{
-		v = parse_value_list(buf);
-		fz_free_css_value(buf->ctx, v);
-		if (accept(buf, '{')) /* @media */
+		if (accept(buf, ';'))
+			return;
+		if (accept(buf, '{'))
 		{
-			parse_media_list(buf);
-			expect(buf, '}');
-		}
-		else /* @import */
-		{
-			expect(buf, ';');
+			int depth = 1;
+			while (buf->lookahead != EOF && depth > 0)
+			{
+				if (accept(buf, '{'))
+					++depth;
+				else if (accept(buf, '}'))
+					--depth;
+				else
+					next(buf);
+			}
+			return;
 		}
+		next(buf);
 	}
 }
 
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