add support for negative numbers in CSS parser

1 files changed, 13 insertions, 1 deletions

diff --git a/src/cssparser.cc b/src/cssparser.cc
index e4637099..0fb0d3d8 100644
--- a/src/cssparser.cc
+++ b/src/cssparser.cc
@@ -426,7 +426,13 @@ static void Css_next_token(CssParser * parser)
       }
    }
 
-   // \todo handle negative numbers according to CSS 2.1
+   // handle negative numbers
+   if (c == '-') {
+      if (i < MAX_STR_LEN - 1)
+         parser->tval[i++] = c;
+      c = Css_getc(parser);
+   }
+
    if (isdigit(c)) {
       parser->ttype = CSS_TK_DECINT;
       do {
@@ -475,6 +481,12 @@ static void Css_next_token(CssParser * parser)
       return;
    }
 
+   if (i) {
+      Css_ungetc(parser); /* ungetc '-' */
+      i--;
+      c = Css_getc(parser);
+   }
+
    if (isalpha(c) || c == '_' || c == '-') {
       parser->ttype = CSS_TK_SYMBOL;