# This rule is taken from https://github.com/stubbornella/csslint/tree/master/src/rules
#
#
# Copyright (c) 2011 Nicole Sullivan and Nicholas C. Zakas. All rights reserved.
# TODO: Paste the CSSLint LICENSE here.
#
#
# /*
#  * Rule: Use the bulletproof @font-face syntax to avoid 404's in old IE
#  * (http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax)
#  */
# /*global CSSLint*/
# CSSLint.addRule({
# 
#     //rule information
#     id: "bulletproof-font-face",
#     name: "Use the bulletproof @font-face syntax",
#     desc: "Use the bulletproof @font-face syntax to avoid 404's in old IE (http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax).",
#     browsers: "All",
# 
#     //initialization
#     init: function(parser, reporter){
#         var rule = this,
#             count = 0,
#             fontFaceRule = false,
#             firstSrc     = true,
#             ruleFailed    = false,
#             line, col;
# 
#         // Mark the start of a @font-face declaration so we only test properties inside it
#         parser.addListener("startfontface", function(event){
#             fontFaceRule = true;
#         });
# 
#         parser.addListener("property", function(event){
#             // If we aren't inside an @font-face declaration then just return
#             if (!fontFaceRule) {
#                 return;
#             }
# 
#             var propertyName = event.property.toString().toLowerCase(),
#                 value        = event.value.toString();
# 
#             // Set the line and col numbers for use in the endfontface listener
#             line = event.line;
#             col  = event.col;
# 
#             // This is the property that we care about, we can ignore the rest
#             if (propertyName === 'src') {
#                 var regex = /^\s?url\(['"].+\.eot\?.*['"]\)\s*format\(['"]embedded-opentype['"]\).*$/i;
# 
#                 // We need to handle the advanced syntax with two src properties
#                 if (!value.match(regex) && firstSrc) {
#                     ruleFailed = true;
#                     firstSrc = false;
#                 } else if (value.match(regex) && !firstSrc) {
#                     ruleFailed = false;
#                 }
#             }
# 
# 
#         });
# 
#         // Back to normal rules that we don't need to test
#         parser.addListener("endfontface", function(event){
#             fontFaceRule = false;
# 
#             if (ruleFailed) {
#                 reporter.report("@font-face declaration doesn't follow the fontspring bulletproof syntax.", line, col, rule);
#             }
#         });
#     }
# });