Acquired Opera AdBlock code

files/parse.js

+const parse = {
+        adblock: function(content, add) {
+                var url = this.wildcard(content.replace(/^@@/, '').replace(/\$.*$/, ''));
+                var option = undefined;
+                if(content.match(/\$/)) { //Is a type-specific rule
+                        option = this.options(content.split('$')[1].split(','));
+                }
+                
+                if(content.match(/^@@/)) {
+                        if(add)
+                                opera.extension.urlfilter.allow.add(url, option);
+                        else
+                                opera.extension.urlfilter.allow.remove(url, option);
+                }
+                else {
+                        if(add)
+                                opera.extension.urlfilter.block.add(url, option);
+                        else
+                                opera.extension.urlfilter.block.remove(url, option);
+                }
+        },
+        adblockOld: function(content, add) { //Parsing of the content for older versions of Opera
+                if(!content.match(/^@@/)) { //Whitelist is not supported 
+                        var url = this.sepCharacters([this.wildcard(content.replace(/\$.*$/, ''))]); //Removes the special rules as those are not supported on older versions of Opera
+                        if(add)
+                                for(i in url)
+                                        opera.extension.urlfilter.block.add(url[i]);
+                        else
+                                for(i in url)
+                                        opera.extension.urlfilter.block.remove(url[i]);
+                }
+        },
+        map: {
+                'script': opera.extension.urlfilter.RESOURCE_SCRIPT,
+                'image': opera.extension.urlfilter.RESOURCE_IMAGE,
+                'stylesheet': opera.extension.urlfilter.RESOURCE_STYLESHEET,
+                'object': opera.extension.urlfilter.RESOURCE_OBJECT,
+                'xmlhttprequest': opera.extension.urlfilter.RESOURCE_XMLHTTPREQUEST,
+                'object-subrequest': opera.extension.urlfilter.RESOURCE_OBJECT_SUBREQUEST,
+                'subdocument': opera.extension.urlfilter.RESOURCE_SUBDOCUMENT,
+                'document': opera.extension.urlfilter.RESOURCE_DOCUMENT,
+                //'refresh': opera.extension.urlfilter.RESOURCE_REFRESH,
+                //'media': opera.extension.urlfilter.RESOURCE_MEDIA,
+                //'font': opera.extension.urlfilter.RESOURCE_FONT,
+                'other': opera.extension.urlfilter.RESOURCE_OTHER,
+                'all': opera.extension.urlfilter.RESOURCE_SCRIPT | opera.extension.urlfilter.RESOURCE_IMAGE | opera.extension.urlfilter.RESOURCE_STYLESHEET | opera.extension.urlfilter.RESOURCE_OBJECT |
+                        opera.extension.urlfilter.RESOURCE_XMLHTTPREQUEST | opera.extension.urlfilter.RESOURCE_OBJECT_SUBREQUEST | opera.extension.urlfilter.RESOURCE_SUBDOCUMENT | opera.extension.urlfilter.RESOURCE_DOCUMENT |
+                        opera.extension.urlfilter.RESOURCE_REFRESH | opera.extension.urlfilter.RESOURCE_MEDIA | opera.extension.urlfilter.RESOURCE_FONT | opera.extension.urlfilter.RESOURCE_OTHER
+        },
+        options: function(special) {
+                var option = {excludeDomains: [], includeDomains: [], resources: this.map['all']};
+                var additive = false;
+                for(i in special) {
+                        var element = special[i];
+                        if(element.match(/^domain/i) == 0) { //TESTED
+                                var domains = special[i].split('=')[1].split(',');
+                                for(j in domains) {
+                                        if(domains[j].match(/^~/)) //Don't apply on this website
+                                                option['excludeDomains'].push(domains[j]);
+                                        else //Apply on this website
+                                                option['includeDomains'].push(domains[j]);
+                                }
+                        }
+                        else if(!element.match(/^elemhide/i)) { //No support for ElemHide - TESTED
+                                if(!element.match(/^~/i)) {
+                                        if(!additive) {
+                                                additive = true;
+                                                option['resources'] = 0;
+                                        }
+                                        option['resources'] += this.map[element];
+                                }
+                                else if(!additive)
+                                        option['resources'] -= this.map[element];
+                        }
+                }
+                return option;
+        },
+        wildcard: function(url) { //TESTED
+                //| at the beginning or end means no wildcard
+                if(!url.match(/^\|\|/)) { //Does not starts with ||
+                        if(url.match(/^\|/)) //Starts with |
+                                url = url.replace(/^\|/, ''); //Remove the |
+                        else if(!url.match(/^\*/)) //Avoid **
+                                url = '*' + url; //Add the wildcard
+                }
+                if(url.match(/\|$/)) //Ends with |
+                        url =  url.replace(/\|$/, ''); //Remove the |
+                else if(!url.match(/\*$/)) //Avoid **
+                        url = url + '*'; //Add the wildcard
+                
+                return url;
+        },
+        sepCharacters: function(value) { //Separator charactor not supported in <12.1
+                //var characters = '(){}[],;:!?/|\\"\'#$&*+<=>@^`~'; //WARNING: Using the longer list WILL freeze the browser in some instances
+                var characters = ':?/#&='; //Shorter string to avoid over-processing
+                var values = new Array();
+                for(i in value) {
+                        for(j in characters) {
+                                values.push(value[i].replace(/\^/, characters[j]));
+                        }
+                        if(values[0].match(/\^/))
+                                return this.sepCharacters(values);
+                }
+                return values;
+        }
+};