08-27-周三_17-09-29

node_modules/domutils/lib/legacy.js

@@ -0,0 +1,87 @@
+var ElementType = require("domelementtype");
+var isTag = exports.isTag = ElementType.isTag;
+
+exports.testElement = function(options, element){
+	for(var key in options){
+		if(!options.hasOwnProperty(key));
+		else if(key === "tag_name"){
+			if(!isTag(element) || !options.tag_name(element.name)){
+				return false;
+			}
+		} else if(key === "tag_type"){
+			if(!options.tag_type(element.type)) return false;
+		} else if(key === "tag_contains"){
+			if(isTag(element) || !options.tag_contains(element.data)){
+				return false;
+			}
+		} else if(!element.attribs || !options[key](element.attribs[key])){
+			return false;
+		}
+	}
+	return true;
+};
+
+var Checks = {
+	tag_name: function(name){
+		if(typeof name === "function"){
+			return function(elem){ return isTag(elem) && name(elem.name); };
+		} else if(name === "*"){
+			return isTag;
+		} else {
+			return function(elem){ return isTag(elem) && elem.name === name; };
+		}
+	},
+	tag_type: function(type){
+		if(typeof type === "function"){
+			return function(elem){ return type(elem.type); };
+		} else {
+			return function(elem){ return elem.type === type; };
+		}
+	},
+	tag_contains: function(data){
+		if(typeof data === "function"){
+			return function(elem){ return !isTag(elem) && data(elem.data); };
+		} else {
+			return function(elem){ return !isTag(elem) && elem.data === data; };
+		}
+	}
+};
+
+function getAttribCheck(attrib, value){
+	if(typeof value === "function"){
+		return function(elem){ return elem.attribs && value(elem.attribs[attrib]); };
+	} else {
+		return function(elem){ return elem.attribs && elem.attribs[attrib] === value; };
+	}
+}
+
+function combineFuncs(a, b){
+	return function(elem){
+		return a(elem) || b(elem);
+	};
+}
+
+exports.getElements = function(options, element, recurse, limit){
+	var funcs = Object.keys(options).map(function(key){
+		var value = options[key];
+		return key in Checks ? Checks[key](value) : getAttribCheck(key, value);
+	});
+
+	return funcs.length === 0 ? [] : this.filter(
+		funcs.reduce(combineFuncs),
+		element, recurse, limit
+	);
+};
+
+exports.getElementById = function(id, element, recurse){
+	if(!Array.isArray(element)) element = [element];
+	return this.findOne(getAttribCheck("id", id), element, recurse !== false);
+};
+
+exports.getElementsByTagName = function(name, element, recurse, limit){
+	return this.filter(Checks.tag_name(name), element, recurse, limit);
+};
+
+exports.getElementsByTagType = function(type, element, recurse, limit){
+	return this.filter(Checks.tag_type(type), element, recurse, limit);
+};