adding the validation for single special character in attribute zmoazeni#70

Author: JoseLuis Torres

lib/csscss/parser/css.rb

@@ -19,14 +19,14 @@ class Parser < Parslet::Parser
 
         rule(:blank_attribute) { str(";") >> space? }
 
-        rule(:attribute_value) { (str('/*').absent? >> match["^;}"]) | raw_comment }
+        rule(:attribute_value) { (str('"') >> any >> str('"')) | (str('/*').absent? >> match["^;}"]) | raw_comment }
 
         rule(:attribute) {
           match["^:{}"].repeat(1).as(:property) >>
           str(":") >>
           (
             (stri("data:").absent? >> attribute_value) |
-            (stri("data:").present? >> attribute_value.repeat(1) >> str(";") >> attribute_value.repeat(1))
+            (stri("data:").present? >> attribute_value.repeat(1) >> str(";") >> attribute_value.repeat(1)) 
           ).repeat(1).as(:value) >>
           str(";").maybe >>
           space?

test/csscss/parser/common_test.rb

@@ -139,6 +139,12 @@ class CommonTest
         @parser.url.must_parse "url(data:image/svg+xml;base64,IMGDATAGOESHERE4/5/h/1+==)"
         @parser.url.must_parse "url('data:image/svg+xml;base64,IMGDATAGOESHERE4/5/h/1+==')"
       end
+      
+      it "parses specials characters" do
+        @parser.between('"', '"') { @parser.symbol("{") }.must_parse '"{"'
+        @parser.between('"', '"') { @parser.symbol("}") }.must_parse '"}"'
+        @parser.between('"', '"') { @parser.symbol("%") }.must_parse '"%"'
+      end
     end
   end
 end

test/csscss/parser/css_test.rb

@@ -212,6 +212,39 @@ module Css
                             dec("display", "block")])
         ])
       end
+
+      it "parses attributes with special characters" do
+        css = %$
+
+        #menu a::before {
+            content: "{";
+            left: -6px;
+        }
+
+        #menu a::after {
+            content: "}";
+            right: -6px;
+        }
+
+        #menu a::weird {
+            content: "@";
+            up: -2px;
+        }
+
+        $
+
+        trans(css).must_equal([
+          rs(sel("#menu a::before"), [dec("content", '"{"'),
+            dec("left", "-6px")
+            ]),
+          rs(sel("#menu a::after"), [dec("content", '"}"'),
+            dec("right", "-6px")
+            ]),
+          rs(sel("#menu a::weird"), [dec("content", '"@"'),
+              dec("up", "-2px")
+            ])
+        ])
+      end
     end
   end
 end