08-27-周三_17-09-29

node_modules/CSSselect/lib/attributes.js

@@ -0,0 +1,178 @@
+var DomUtils  = require("domutils"),
+    hasAttrib = DomUtils.hasAttrib,
+    getAttributeValue = DomUtils.getAttributeValue,
+    falseFunc = require("./basefunctions.js").falseFunc;
+
+//https://github.com/slevithan/XRegExp/blob/master/src/xregexp.js#L469
+var reChars = /[-[\]{}()*+?.,\\^$|#\s]/g;
+
+/*
+	attribute selectors
+*/
+
+var attributeRules = {
+	__proto__: null,
+	equals: function(next, data){
+		var name  = data.name,
+		    value = data.value;
+
+		if(data.ignoreCase){
+			value = value.toLowerCase();
+
+			return function equalsIC(elem){
+				var attr = getAttributeValue(elem, name);
+				return attr != null && attr.toLowerCase() === value && next(elem);
+			};
+		}
+
+		return function equals(elem){
+			return getAttributeValue(elem, name) === value && next(elem);
+		};
+	},
+	hyphen: function(next, data){
+		var name  = data.name,
+		    value = data.value,
+		    len = value.length;
+
+		if(data.ignoreCase){
+			value = value.toLowerCase();
+
+			return function hyphenIC(elem){
+				var attr = getAttributeValue(elem, name);
+				return attr != null &&
+						(attr.length === len || attr.charAt(len) === "-") &&
+						attr.substr(0, len).toLowerCase() === value &&
+						next(elem);
+			};
+		}
+
+		return function hyphen(elem){
+			var attr = getAttributeValue(elem, name);
+			return attr != null &&
+					attr.substr(0, len) === value &&
+					(attr.length === len || attr.charAt(len) === "-") &&
+					next(elem);
+		};
+	},
+	element: function(next, data){
+		var name = data.name,
+		    value = data.value;
+
+		if(/\s/.test(value)){
+			return falseFunc;
+		}
+
+		value = value.replace(reChars, "\\$&");
+
+		var pattern = "(?:^|\\s)" + value + "(?:$|\\s)",
+		    flags = data.ignoreCase ? "i" : "",
+		    regex = new RegExp(pattern, flags);
+
+		return function element(elem){
+			var attr = getAttributeValue(elem, name);
+			return attr != null && regex.test(attr) && next(elem);
+		};
+	},
+	exists: function(next, data){
+		var name = data.name;
+		return function exists(elem){
+			return hasAttrib(elem, name) && next(elem);
+		};
+	},
+	start: function(next, data){
+		var name  = data.name,
+		    value = data.value,
+		    len = value.length;
+
+		if(len === 0){
+			return falseFunc;
+		}
+		
+		if(data.ignoreCase){
+			value = value.toLowerCase();
+
+			return function startIC(elem){
+				var attr = getAttributeValue(elem, name);
+				return attr != null && attr.substr(0, len).toLowerCase() === value && next(elem);
+			};
+		}
+
+		return function start(elem){
+			var attr = getAttributeValue(elem, name);
+			return attr != null && attr.substr(0, len) === value && next(elem);
+		};
+	},
+	end: function(next, data){
+		var name  = data.name,
+		    value = data.value,
+		    len   = -value.length;
+
+		if(len === 0){
+			return falseFunc;
+		}
+
+		if(data.ignoreCase){
+			value = value.toLowerCase();
+
+			return function endIC(elem){
+				var attr = getAttributeValue(elem, name);
+				return attr != null && attr.substr(len).toLowerCase() === value && next(elem);
+			};
+		}
+
+		return function end(elem){
+			var attr = getAttributeValue(elem, name);
+			return attr != null && attr.substr(len) === value && next(elem);
+		};
+	},
+	any: function(next, data){
+		var name  = data.name,
+		    value = data.value;
+
+		if(value === ""){
+			return falseFunc;
+		}
+
+		if(data.ignoreCase){
+			var regex = new RegExp(value.replace(reChars, "\\$&"), "i");
+
+			return function anyIC(elem){
+				var attr = getAttributeValue(elem, name);
+				return attr != null && regex.test(attr) && next(elem);
+			};
+		}
+
+		return function any(elem){
+			var attr = getAttributeValue(elem, name);
+			return attr != null && attr.indexOf(value) >= 0 && next(elem);
+		};
+	},
+	not: function(next, data){
+		var name  = data.name,
+		    value = data.value;
+
+		if(value === ""){
+			return function notEmpty(elem){
+				return !!getAttributeValue(elem, name) && next(elem);
+			};
+		} else if(data.ignoreCase){
+			value = value.toLowerCase();
+
+			return function notIC(elem){
+				var attr = getAttributeValue(elem, name);
+				return attr != null && attr.toLowerCase() !== value && next(elem);
+			};
+		}
+
+		return function not(elem){
+			return getAttributeValue(elem, name) !== value && next(elem);
+		};
+	}
+};
+
+module.exports = {
+	compile: function(next, data){
+		return attributeRules[data.action](next, data);
+	},
+	rules: attributeRules
+};

node_modules/CSSselect/lib/basefunctions.js

@@ -0,0 +1,8 @@
+module.exports = {
+	trueFunc: function trueFunc(){
+		return true;
+	},
+	falseFunc: function falseFunc(){
+		return false;
+	}
+};

node_modules/CSSselect/lib/compile.js

@@ -0,0 +1,84 @@
+/*
+	compiles a selector to an executable function
+*/
+
+module.exports = compile;
+module.exports.compileUnsafe = compileUnsafe;
+
+var parse       = require("CSSwhat"),
+    DomUtils    = require("domutils"),
+    isTag       = DomUtils.isTag,
+    Rules       = require("./general.js"),
+    sortRules   = require("./sort.js"),
+    BaseFuncs   = require("./basefunctions.js"),
+    trueFunc    = BaseFuncs.trueFunc,
+    falseFunc   = BaseFuncs.falseFunc;
+
+function compile(selector, options){
+	var next = compileUnsafe(selector, options);
+
+	return function base(elem){
+		return isTag(elem) && next(elem);
+	};
+}
+
+function compileUnsafe(selector, options){
+	return parse(selector, options)
+		.map(compileRules)
+		.reduce(reduceRules, falseFunc);
+}
+
+function compileRules(arr){
+	if(arr.length === 0) return falseFunc;
+	return sortRules(arr).reduce(function(func, rule){
+		if(func === falseFunc) return func;
+		return Rules[rule.type](func, rule);
+	}, trueFunc);
+}
+
+function reduceRules(a, b){
+	if(b === falseFunc || a === trueFunc){
+		return a;
+	}
+	if(a === falseFunc || b === trueFunc){
+		return b;
+	}
+
+	return function combine(elem){
+		return a(elem) || b(elem);
+	};	
+}
+
+//:not and :has have to compile selectors
+//doing this in lib/pseudos.js would lead to circular dependencies,
+//so we add them here
+
+var Pseudos     = require("./pseudos.js"),
+    filters     = Pseudos.filters,
+    isParent    = Pseudos.pseudos.parent,
+    existsOne   = DomUtils.existsOne,
+    getChildren = DomUtils.getChildren;
+
+filters.not = function(next, select){
+	var func = compileUnsafe(select);
+
+	if(func === falseFunc) return next;
+	if(func === trueFunc)  return falseFunc;
+
+	return function(elem){
+		return !func(elem) && next(elem);
+	};
+};
+
+filters.has = function(next, selector){
+	var func = compile(selector);
+
+	if(func === falseFunc) return falseFunc;
+	if(func === trueFunc)  return function(elem){
+			return isParent(elem) && next(elem);
+		};
+
+	return function has(elem){
+		return next(elem) && existsOne(func, getChildren(elem));
+	};
+};

node_modules/CSSselect/lib/general.js

@@ -0,0 +1,80 @@
+var DomUtils    = require("domutils"),
+    isTag       = DomUtils.isTag,
+    getParent   = DomUtils.getParent,
+    getChildren = DomUtils.getChildren,
+    getSiblings = DomUtils.getSiblings,
+    getName     = DomUtils.getName;
+
+/*
+	all available rules
+*/
+module.exports = {
+	__proto__: null,
+
+	attribute: require("./attributes.js").compile,
+	pseudo: require("./pseudos.js").compile,
+
+	//tags
+	tag: function(next, data){
+		var name = data.name;
+		return function tag(elem){
+			return getName(elem) === name && next(elem);
+		};
+	},
+
+	//traversal
+	descendant: function(next){
+		return function descendant(elem){
+			var found = false;
+
+			while(!found && (elem = getParent(elem))){
+				found = next(elem);
+			}
+
+			return found;
+		};
+	},
+	parent: function(next){
+		return function parent(elem){
+			return getChildren(elem).some(next);
+		};
+	},
+	child: function(next){
+		return function child(elem){
+			var parent = getParent(elem);
+			return !!parent && next(parent);
+		};
+	},
+	sibling: function(next){
+		return function sibling(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = 0; i < siblings.length; i++){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) break;
+					if(next(siblings[i])) return true;
+				}
+			}
+
+			return false;
+		};
+	},
+	adjacent: function(next){
+		return function adjacent(elem){
+			var siblings = getSiblings(elem),
+			    lastElement;
+
+			for(var i = 0; i < siblings.length; i++){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) break;
+					lastElement = siblings[i];
+				}
+			}
+
+			return !!lastElement && next(lastElement);
+		};
+	},
+	universal: function(next){
+		return next;
+	}
+};

node_modules/CSSselect/lib/nth-check.js

@@ -0,0 +1,84 @@
+var BaseFuncs = require("./basefunctions.js"),
+    trueFunc  = BaseFuncs.trueFunc,
+    falseFunc = BaseFuncs.falseFunc;
+
+module.exports = function nthCheck(formula){
+	return compile(parse(formula));
+};
+
+module.exports.parse = parse;
+module.exports.compile = compile;
+
+//following http://www.w3.org/TR/css3-selectors/#nth-child-pseudo
+
+//[ ['-'|'+']? INTEGER? {N} [ S* ['-'|'+'] S* INTEGER ]?
+var re_nthElement = /^([+\-]?\d*n)?\s*(?:([+\-]?)\s*(\d+))?$/;
+
+/*
+	parses a nth-check formula, returns an array of two numbers
+*/
+function parse(formula){
+	formula = formula.trim().toLowerCase();
+
+	if(formula === "even"){
+		return [2, 0];
+	} else if(formula === "odd"){
+		return [2, 1];
+	} else {
+		var parsed = formula.match(re_nthElement);
+
+		if(!parsed){
+			throw new SyntaxError("n-th rule couldn't be parsed ('" + formula + "')");
+		}
+
+		var a;
+
+		if(parsed[1]){
+			a = parseInt(parsed[1], 10);
+			if(!a){
+				if(parsed[1].charAt(0) === "-") a = -1;
+				else a = 1;
+			}
+		} else a = 0;
+
+		return [
+			a,
+			parsed[3] ? parseInt((parsed[2] || "") + parsed[3], 10) : 0
+		];
+	}
+}
+
+/*
+	returns a function that checks if an elements index matches the given rule
+	highly optimized to return the fastest solution
+*/
+function compile(parsed){
+	var a = parsed[0],
+	    b = parsed[1] - 1;
+
+	//when b <= 0, a*n won't be possible for any matches when a < 0
+	//besides, the specification says that no element is matched when a and b are 0
+	if(b < 0 && a <= 0) return falseFunc;
+
+	//when a is in the range -1..1, it matches any element (so only b is checked)
+	if(a ===-1) return function(pos){ return pos <= b; };
+	if(a === 0) return function(pos){ return pos === b; };
+	//when b <= 0 and a === 1, they match any element
+	if(a === 1) return b < 0 ? trueFunc : function(pos){ return pos >= b; };
+
+	//when a > 0, modulo can be used to check if there is a match
+	var bMod = b % a;
+	if(bMod < 0) bMod += a;
+
+	if(a > 1){
+		return function(pos){
+			return pos >= b && pos % a === bMod;
+		};
+	}
+
+	a *= -1; //make `a` positive
+
+	return function(pos){
+		return pos <= b && pos % a === bMod;
+	};
+}

node_modules/CSSselect/lib/pseudos.js

@@ -0,0 +1,338 @@
+/*
+	pseudo selectors
+	
+	---
+	
+	they are available in two forms:
+	* filters called when the selector 
+	  is compiled and return a function
+	  that needs to return next()
+	* pseudos get called on execution
+	  they need to return a boolean
+*/
+
+var DomUtils    = require("domutils"),
+    isTag       = DomUtils.isTag,
+    getText     = DomUtils.getText,
+    getParent   = DomUtils.getParent,
+    getChildren = DomUtils.getChildren,
+    getSiblings = DomUtils.getSiblings,
+    hasAttrib   = DomUtils.hasAttrib,
+    getName     = DomUtils.getName,
+    getAttribute= DomUtils.getAttributeValue,
+    getNCheck   = require("./nth-check.js"),
+    checkAttrib = require("./attributes.js").rules.equals,
+    BaseFuncs   = require("./basefunctions.js"),
+    trueFunc    = BaseFuncs.trueFunc,
+    falseFunc   = BaseFuncs.falseFunc;
+
+//helper methods
+function getFirstElement(elems){
+	for(var i = 0; elems && i < elems.length; i++){
+		if(isTag(elems[i])) return elems[i];
+	}
+}
+
+function getAttribFunc(name, value){
+	var data = {name: name, value: value};
+	return function attribFunc(next){
+		return checkAttrib(next, data);
+	};
+}
+
+function getChildFunc(next){
+	return function(elem){
+		return !!getParent(elem) && next(elem);
+	};
+}
+
+var filters = {
+	contains: function(next, text){
+		if(
+			(text.charAt(0) === "\"" || text.charAt(0) === "'") &&
+			text.charAt(0) === text.substr(-1)
+		){
+			text = text.slice(1, -1);
+		}
+		return function contains(elem){
+			return getText(elem).indexOf(text) >= 0 && next(elem);
+		};
+	},
+
+	//location specific methods
+	//first- and last-child methods return as soon as they find another element
+	"first-child": function(next){
+		return function firstChild(elem){
+			return getFirstElement(getSiblings(elem)) === elem && next(elem);
+		};
+	},
+	"last-child": function(next){
+		return function lastChild(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = siblings.length - 1; i >= 0; i--){
+				if(siblings[i] === elem) return next(elem);
+				if(isTag(siblings[i])) break;
+			}
+
+			return false;
+		};
+	},
+	"first-of-type": function(next){
+		return function firstOfType(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = 0; i < siblings.length; i++){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) return next(elem);
+					if(getName(siblings[i]) === getName(elem)) break;
+				}
+			}
+
+			return false;
+		};
+	},
+	"last-of-type": function(next){
+		return function lastOfType(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = siblings.length-1; i >= 0; i--){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) return next(elem);
+					if(getName(siblings[i]) === getName(elem)) break;
+				}
+			}
+
+			return false;
+		};
+	},
+	"only-of-type": function(next){
+		return function onlyOfType(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = 0, j = siblings.length; i < j; i++){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) continue;
+					if(getName(siblings[i]) === getName(elem)) return false;
+				}
+			}
+
+			return next(elem);
+		};
+	},
+	"only-child": function(next){
+		return function onlyChild(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = 0; i < siblings.length; i++){
+				if(isTag(siblings[i]) && siblings[i] !== elem) return false;
+			}
+
+			return next(elem);
+		};
+	},
+	"nth-child": function(next, rule){
+		var func = getNCheck(rule);
+
+		if(func === falseFunc) return func;
+		if(func === trueFunc)  return getChildFunc(next);
+
+		return function nthChild(elem){
+			var siblings = getSiblings(elem);
+
+			for(var i = 0, pos = 0; i < siblings.length; i++){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) break;
+					else pos++;
+				}
+			}
+
+			return func(pos) && next(elem);
+		};
+	},
+	"nth-last-child": function(next, rule){
+		var func = getNCheck(rule);
+
+		if(func === falseFunc) return func;
+		if(func === trueFunc)  return getChildFunc(next);
+
+		return function nthLastChild(elem){
+			var siblings = getSiblings(elem);
+
+			for(var pos = 0, i = siblings.length - 1; i >= 0; i--){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) break;
+					else pos++;
+				}
+			}
+
+			return func(pos) && next(elem);
+		};
+	},
+	"nth-of-type": function(next, rule){
+		var func = getNCheck(rule);
+
+		if(func === falseFunc) return func;
+		if(func === trueFunc)  return getChildFunc(next);
+
+		return function nthOfType(elem){
+			var siblings = getSiblings(elem);
+
+			for(var pos = 0, i = 0; i < siblings.length; i++){
+				if(isTag(siblings[i])){
+					if(siblings[i] === elem) break;
+					if(getName(siblings[i]) === getName(elem)) pos++;
+				}
+			}
+
+			return func(pos) && next(elem);
+		};
+	},
+	"nth-last-of-type": function(next, rule){
+		var func = getNCheck(rule);
+
+		if(func === falseFunc) return func;
+		if(func === trueFunc)  return getChildFunc(next);
+
+		return function nthLastOfType(elem){
+			var siblings = getSiblings(elem);
+
+			for(var pos = 0, i = siblings.length - 1; i >= 0; i--){
+				if(siblings[i] === elem) break;
+				if(getName(siblings[i]) === getName(elem)) pos++;
+			}
+
+			return func(pos) && next(elem);
+		};
+	},
+
+	//jQuery extensions (others follow as pseudos)
+	checkbox: getAttribFunc("type", "checkbox"),
+	file: getAttribFunc("type", "file"),
+	password: getAttribFunc("type", "password"),
+	radio: getAttribFunc("type", "radio"),
+	reset: getAttribFunc("type", "reset"),
+	image: getAttribFunc("type", "image"),
+	submit: getAttribFunc("type", "submit")
+};
+
+//while filters are precompiled, pseudos get called when they are needed
+var pseudos = {
+	root: function(elem){
+		return !getParent(elem);
+	},
+	empty: function(elem){
+		return !getChildren(elem).some(function(elem){
+			return isTag(elem) || elem.type === "text";
+		});
+	},
+
+	//forms
+	//to consider: :target, :enabled
+	selected: function(elem){
+		if(hasAttrib(elem, "selected")) return true;
+		else if(getName(elem) !== "option") return false;
+
+		//the first <option> in a <select> is also selected
+		var parent = getParent(elem);
+
+		if(!parent || getName(parent) !== "select") return false;
+
+		var siblings = getChildren(parent),
+			sawElem  = false;
+
+		for(var i = 0; i < siblings.length; i++){
+			if(isTag(siblings[i])){
+				if(siblings[i] === elem){
+					sawElem = true;
+				} else if(!sawElem){
+					return false;
+				} else if(hasAttrib(siblings[i], "selected")){
+					return false;
+				}
+			}
+		}
+
+		return sawElem;
+	},
+	disabled: function(elem){
+		return hasAttrib(elem, "disabled");
+	},
+	enabled: function(elem){
+		return !hasAttrib(elem, "disabled");
+	},
+	checked: function(elem){
+		return hasAttrib(elem, "checked") || pseudos.selected(elem);
+	},
+
+	//jQuery extensions
+
+	//:parent is the inverse of :empty
+	parent: function(elem){
+		return !pseudos.empty(elem);
+	},
+	header: function(elem){
+		var name = getName(elem);
+		return name === "h1" ||
+		       name === "h2" ||
+		       name === "h3" ||
+		       name === "h4" ||
+		       name === "h5" ||
+		       name === "h6";
+	},
+
+	button: function(elem){
+		var name = getName(elem);
+		return name === "button" ||
+		       name === "input" &&
+		       getAttribute(elem, "type") === "button";
+	},
+	input: function(elem){
+		var name = getName(elem);
+		return name === "input" ||
+		       name === "textarea" ||
+		       name === "select" ||
+		       name === "button";
+	},
+	text: function(elem){
+		var attr;
+		return getName(elem) === "input" && (
+			!(attr = getAttribute(elem, "type")) ||
+			attr.toLowerCase() === "text"
+		);
+	}
+};
+
+function verifyArgs(func, name, subselect){
+	if(subselect === null){
+		if(func.length > 1){
+			throw new SyntaxError("pseudo-selector :" + name + " requires an argument");
+		}
+	} else {
+		if(func.length === 1){
+			throw new SyntaxError("pseudo-selector :" + name + " doesn't have any arguments");
+		}	
+	}
+}
+
+module.exports = {
+	compile: function(next, data){
+		var name = data.name,
+			subselect = data.data;
+
+		if(typeof filters[name] === "function"){
+			verifyArgs(filters[name], name,  subselect);
+			return filters[name](next, subselect);
+		} else if(typeof pseudos[name] === "function"){
+			var func = pseudos[name];
+			verifyArgs(func, name, subselect);
+			return function pseudoArgs(elem){
+				return func(elem, subselect) && next(elem);
+			};
+		} else {
+			throw new SyntaxError("unmatched pseudo-class :" + name);
+		}
+	},
+	filters: filters,
+	pseudos: pseudos
+};

node_modules/CSSselect/lib/sort.js

@@ -0,0 +1,59 @@
+module.exports = sortByProcedure;
+
+/*
+	sort the parts of the passed selector,
+	as there is potential for optimization
+	(some types of selectors are faster than others)
+*/
+
+var ATTRIBUTE = 1;
+
+var procedure = {
+	__proto__: null,
+	universal: 5, //should be last so that it can be ignored
+	tag: 3, //very quick test
+	attribute: ATTRIBUTE,
+	pseudo: 0, //can be pretty expensive (especially :has)
+
+	//everything else shouldn't be moved
+	descendant: -1,
+	child: -1,
+	parent: -1,
+	sibling: -1,
+	adjacent: -1
+};
+
+var attributes = {
+	__proto__: null,
+	exists: 8,
+	equals: 7,
+	not: 6,
+	start: 5,
+	end: 4,
+	any: 3,
+	hyphen: 2,
+	element: 1
+};
+
+function sortByProcedure(arr){
+	for(var i = 1; i < arr.length; i++){
+		var procNew = procedure[arr[i].type];
+
+		if(procNew < 0) continue;
+
+		for(var j = i - 1; j >= 0; j--){
+			if(
+				procNew > procedure[arr[j].type] || !(
+					procNew === ATTRIBUTE &&
+					procedure[arr[j].type] === ATTRIBUTE &&
+					attributes[arr[i].action] <= attributes[arr[j].action]
+				)
+			) break;
+
+			var tmp = arr[j + 1];
+			arr[j + 1] = arr[j];
+			arr[j] = tmp;
+		}
+	}
+	return arr;
+}