fineui/src/core/base.js

/**
 * 基本函数
 * Create By GUY 2014\11\17
 *
 */
_global = undefined;
if (typeof window !== "undefined") {
    _global = window;
} else if (typeof global !== "undefined") {
    _global = global;
} else if (typeof self !== "undefined") {
    _global = self;
} else {
    _global = this;
}
if (!_global.BI) {
    _global.BI = {};
}

!(function (undefined) {
    var traverse = function (func, context) {
        return function (value, key, obj) {
            return func.call(context, key, value, obj);
        };
    };
    var _apply = function (name) {
        return function () {
            return _[name].apply(_, arguments);
        };
    };
    var _applyFunc = function (name) {
        return function () {
            var args = Array.prototype.slice.call(arguments, 0);
            args[1] = _.isFunction(args[1]) ? traverse(args[1], args[2]) : args[1];
            return _[name].apply(_, args);
        };
    };

    // Utility
    _.extend(BI, {
        assert: function (v, is) {
            if (this.isFunction(is)) {
                if (!is(v)) {
                    throw new Error(v + " error");
                } else {
                    return true;
                }
            }
            if (!this.isArray(is)) {
                is = [is];
            }
            if (!this.deepContains(is, v)) {
                throw new Error(v + " error");
            }
            return true;
        },

        warn: function (message) {
            console.warn(message);
        },

        UUID: function () {
            var f = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];
            var str = "";
            for (var i = 0; i < 16; i++) {
                var r = parseInt(f.length * Math.random(), 10);
                str += f[r];
            }
            return str;
        },

        isWidget: function (widget) {
            return widget instanceof BI.Widget || (BI.View && widget instanceof BI.View);
        },

        createWidgets: function (items, options, context) {
            if (!BI.isArray(items)) {
                throw new Error("cannot create Widgets");
            }
            if (BI.isWidget(options)) {
                context = options;
                options = {};
            } else {
                options || (options = {});
            }
            return BI.map(BI.flatten(items), function (i, item) {
                return BI.createWidget(item, BI.deepClone(options));
            });
        },

        createItems: function (data, innerAttr, outerAttr) {
            innerAttr = BI.isArray(innerAttr) ? innerAttr : BI.makeArray(BI.flatten(data).length, innerAttr || {});
            outerAttr = BI.isArray(outerAttr) ? outerAttr : BI.makeArray(BI.flatten(data).length, outerAttr || {});
            return BI.map(data, function (i, item) {
                if (BI.isArray(item)) {
                    return BI.createItems(item, innerAttr, outerAttr);
                }
                if (item instanceof BI.Widget) {
                    return BI.extend({}, innerAttr.shift(), outerAttr.shift(), {
                        type: null,
                        el: item
                    });
                }
                if (innerAttr[0] instanceof BI.Widget) {
                    outerAttr.shift();
                    return BI.extend({}, item, {
                        el: innerAttr.shift()
                    });
                }
                if (item.el instanceof BI.Widget || (BI.View && item.el instanceof BI.View)) {
                    innerAttr.shift();
                    return BI.extend({}, outerAttr.shift(), { type: null }, item);
                }
                if (item.el) {
                    return BI.extend({}, outerAttr.shift(), item, {
                        el: BI.extend({}, innerAttr.shift(), item.el)
                    });
                }
                return BI.extend({}, outerAttr.shift(), {
                    el: BI.extend({}, innerAttr.shift(), item)
                });
            });
        },

        // 用容器包装items
        packageItems: function (items, layouts) {
            for (var i = layouts.length - 1; i >= 0; i--) {
                items = BI.map(items, function (k, it) {
                    return BI.extend({}, layouts[i], {
                        items: [
                            BI.extend({}, layouts[i].el, {
                                el: it
                            })
                        ]
                    });
                });
            }
            return items;
        },

        formatEL: function (obj) {
            if (obj && !obj.type && obj.el) {
                return obj;
            }
            return {
                el: obj
            };
        },

        // 剥开EL
        stripEL: function (obj) {
            return obj.type && obj || obj.el || obj;
        },

        trans2Element: function (widgets) {
            return BI.map(widgets, function (i, wi) {
                return wi.element;
            });
        }
    });

    // 集合相关方法
    _.each(["where", "findWhere", "invoke", "pluck", "shuffle", "sample", "toArray", "size"], function (name) {
        BI[name] = _apply(name);
    });
    _.each(["get", "set", "each", "map", "reduce", "reduceRight", "find", "filter", "reject", "every", "all", "some", "any", "max", "min",
        "sortBy", "groupBy", "indexBy", "countBy", "partition", "clamp"], function (name) {
        if (name === "any") {
            BI[name] = _applyFunc("some");
        } else {
            BI[name] = _applyFunc(name);
        }
    });
    _.extend(BI, {
        // 数数
        count: function (from, to, predicate) {
            var t;
            if (predicate) {
                for (t = from; t < to; t++) {
                    predicate(t);
                }
            }
            return to - from;
        },

        // 倒数
        inverse: function (from, to, predicate) {
            return BI.count(to, from, predicate);
        },

        firstKey: function (obj) {
            var res = undefined;
            BI.any(obj, function (key, value) {
                res = key;
                return true;
            });
            return res;
        },

        lastKey: function (obj) {
            var res = undefined;
            BI.each(obj, function (key, value) {
                res = key;
                return true;
            });
            return res;
        },

        firstObject: function (obj) {
            var res = undefined;
            BI.any(obj, function (key, value) {
                res = value;
                return true;
            });
            return res;
        },

        lastObject: function (obj) {
            var res = undefined;
            BI.each(obj, function (key, value) {
                res = value;
                return true;
            });
            return res;
        },

        concat: function (obj1, obj2) {
            if (BI.isKey(obj1)) {
                return BI.map([].slice.apply(arguments), function (idx, v) {
                    return v;
                }).join("");
            }
            if (BI.isArray(obj1)) {
                return _.concat.apply([], arguments);
            }
            if (BI.isObject(obj1)) {
                return _.extend.apply({}, arguments);
            }
        },

        backEach: function (obj, predicate, context) {
            predicate = BI.iteratee(predicate, context);
            for (var index = obj.length - 1; index >= 0; index--) {
                predicate(index, obj[index], obj);
            }
            return false;
        },

        backAny: function (obj, predicate, context) {
            predicate = BI.iteratee(predicate, context);
            for (var index = obj.length - 1; index >= 0; index--) {
                if (predicate(index, obj[index], obj)) {
                    return true;
                }
            }
            return false;
        },

        backEvery: function (obj, predicate, context) {
            predicate = BI.iteratee(predicate, context);
            for (var index = obj.length - 1; index >= 0; index--) {
                if (!predicate(index, obj[index], obj)) {
                    return false;
                }
            }
            return true;
        },

        backFindKey: function (obj, predicate, context) {
            predicate = BI.iteratee(predicate, context);
            var keys = _.keys(obj), key;
            for (var i = keys.length - 1; i >= 0; i--) {
                key = keys[i];
                if (predicate(obj[key], key, obj)) {
                    return key;
                }
            }
        },

        backFind: function (obj, predicate, context) {
            var key;
            if (BI.isArray(obj)) {
                key = BI.findLastIndex(obj, predicate, context);
            } else {
                key = BI.backFindKey(obj, predicate, context);
            }
            if (key !== void 0 && key !== -1) {
                return obj[key];
            }
        },

        remove: function (obj, target, context) {
            var isFunction = BI.isFunction(target);
            target = isFunction || BI.isArray(target) ? target : [target];
            var i;
            if (BI.isArray(obj)) {
                for (i = 0; i < obj.length; i++) {
                    if ((isFunction && target.apply(context, [i, obj[i]]) === true) || (!isFunction && BI.contains(target, obj[i]))) {
                        obj.splice(i--, 1);
                    }
                }
            } else {
                BI.each(obj, function (i, v) {
                    if ((isFunction && target.apply(context, [i, obj[i]]) === true) || (!isFunction && BI.contains(target, obj[i]))) {
                        delete obj[i];
                    }
                });
            }
        },

        removeAt: function (obj, index) {
            index = BI.isArray(index) ? index : [index];
            var isArray = BI.isArray(obj), i;
            for (i = 0; i < index.length; i++) {
                if (isArray) {
                    obj[index[i]] = "$deleteIndex";
                } else {
                    delete obj[index[i]];
                }
            }
            if (isArray) {
                BI.remove(obj, "$deleteIndex");
            }
        },

        string2Array: function (str) {
            return str.split("&-&");
        },

        array2String: function (array) {
            return array.join("&-&");
        },

        abc2Int: function (str) {
            var idx = 0, start = "A", str = str.toUpperCase();
            for (var i = 0, len = str.length; i < len; ++i) {
                idx = str.charAt(i).charCodeAt(0) - start.charCodeAt(0) + 26 * idx + 1;
                if (idx > (2147483646 - str.charAt(i).charCodeAt(0) + start.charCodeAt(0)) / 26) {
                    return 0;
                }
            }
            return idx;
        },

        int2Abc: function (num) {
            var DIGITS = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];
            var idx = num, str = "";
            if (num === 0) {
                return "";
            }
            while (idx !== 0) {
                var t = idx % 26;
                if (t === 0) {
                    t = 26;
                }
                str = DIGITS[t - 1] + str;
                idx = (idx - t) / 26;
            }
            return str;
        }
    });

    // 数组相关的方法
    _.each(["first", "initial", "last", "rest", "compact", "flatten", "without", "union", "intersection",
        "difference", "zip", "unzip", "object", "indexOf", "lastIndexOf", "sortedIndex", "range", "take", "takeRight", "uniqBy"], function (name) {
        BI[name] = _apply(name);
    });
    _.each(["findIndex", "findLastIndex"], function (name) {
        BI[name] = _applyFunc(name);
    });
    _.extend(BI, {
        // 构建一个长度为length的数组
        makeArray: function (length, value) {
            var res = [];
            for (var i = 0; i < length; i++) {
                if (BI.isNull(value)) {
                    res.push(i);
                } else {
                    res.push(BI.deepClone(value));
                }
            }
            return res;
        },

        makeObject: function (array, value) {
            var map = {};
            for (var i = 0; i < array.length; i++) {
                if (BI.isNull(value)) {
                    map[array[i]] = array[i];
                } else {
                    map[array[i]] = BI.deepClone(value);
                }
            }
            return map;
        },

        makeArrayByArray: function (array, value) {
            var res = [];
            if (!array) {
                return res;
            }
            for (var i = 0, len = array.length; i < len; i++) {
                if (BI.isArray(array[i])) {
                    res.push(arguments.callee(array[i], value));
                } else {
                    res.push(BI.deepClone(value));
                }
            }
            return res;
        },

        uniq: function (array, isSorted, iteratee, context) {
            if (array == null) {
                return [];
            }
            if (!_.isBoolean(isSorted)) {
                context = iteratee;
                iteratee = isSorted;
                isSorted = false;
            }
            iteratee && (iteratee = traverse(iteratee, context));
            return _.uniq.call(_, array, isSorted, iteratee, context);
        }
    });

    // 对象相关方法
    _.each(["keys", "allKeys", "values", "pairs", "invert", "create", "functions", "extend", "extendOwn",
        "defaults", "clone", "property", "propertyOf", "matcher", "isEqual", "isMatch", "isEmpty",
        "isElement", "isNumber", "isString", "isArray", "isObject", "isPlainObject", "isArguments", "isFunction", "isFinite",
        "isBoolean", "isDate", "isRegExp", "isError", "isNaN", "isUndefined", "zipObject", "cloneDeep"], function (name) {
        BI[name] = _apply(name);
    });
    _.each(["mapObject", "findKey", "pick", "omit", "tap"], function (name) {
        BI[name] = _applyFunc(name);
    });
    _.extend(BI, {

        inherit: function (sb, sp, overrides) {
            if (typeof sp === "object") {
                overrides = sp;
                sp = sb;
                sb = function () {
                    return sp.apply(this, arguments);
                };
            }
            var F = function () {
            }, spp = sp.prototype;
            F.prototype = spp;
            sb.prototype = new F();
            sb.superclass = spp;
            _.extend(sb.prototype, overrides, {
                superclass: sp
            });
            return sb;
        },

        init: function () {
            // 先把准备环境准备好
            while (BI.prepares && BI.prepares.length > 0) {
                BI.prepares.shift()();
            }
            while (_global.___fineuiExposedFunction && _global.___fineuiExposedFunction.length > 0) {
                _global.___fineuiExposedFunction.shift()();
            }
            BI.initialized = true;
        },

        has: function (obj, keys) {
            if (BI.isArray(keys)) {
                if (keys.length === 0) {
                    return false;
                }
                return BI.every(keys, function (i, key) {
                    return _.has(obj, key);
                });
            }
            return _.has.apply(_, arguments);
        },

        freeze: function (value) {
            // 在ES5中，如果这个方法的参数不是一个对象（一个原始值），那么它会导致 TypeError
            // 在ES2015中，非对象参数将被视为要被冻结的普通对象，并被简单地返回
            if (Object.freeze && BI.isObject(value)) {
                return Object.freeze(value);
            }
            return value;
        },

        // 数字和字符串可以作为key
        isKey: function (key) {
            return BI.isNumber(key) || (BI.isString(key) && key.length > 0);
        },

        // 忽略大小写的等于
        isCapitalEqual: function (a, b) {
            a = BI.isNull(a) ? a : ("" + a).toLowerCase();
            b = BI.isNull(b) ? b : ("" + b).toLowerCase();
            return BI.isEqual(a, b);
        },

        isWidthOrHeight: function (w) {
            if (typeof w === "number") {
                return w >= 0;
            } else if (typeof w === "string") {
                return /^\d{1,3}%$/.exec(w) || w == "auto" || /^\d+px$/.exec(w);
            }
        },

        isNotNull: function (obj) {
            return !BI.isNull(obj);
        },

        isNull: function (obj) {
            return typeof obj === "undefined" || obj === null;
        },

        isEmptyArray: function (arr) {
            return BI.isArray(arr) && BI.isEmpty(arr);
        },

        isNotEmptyArray: function (arr) {
            return BI.isArray(arr) && !BI.isEmpty(arr);
        },

        isEmptyObject: function (obj) {
            return BI.isEqual(obj, {});
        },

        isNotEmptyObject: function (obj) {
            return BI.isPlainObject(obj) && !BI.isEmptyObject(obj);
        },

        isEmptyString: function (obj) {
            return BI.isString(obj) && obj.length === 0;
        },

        isNotEmptyString: function (obj) {
            return BI.isString(obj) && !BI.isEmptyString(obj);
        },

        isWindow: function (obj) {
            return obj != null && obj == obj.window;
        }
    });

    // deep方法
    _.extend(BI, {
        deepClone: _.cloneDeep,
        deepExtend: _.merge,

        isDeepMatch: function (object, attrs) {
            var keys = BI.keys(attrs), length = keys.length;
            if (object == null) {
                return !length;
            }
            var obj = Object(object);
            for (var i = 0; i < length; i++) {
                var key = keys[i];
                if (!BI.isEqual(attrs[key], obj[key]) || !(key in obj)) {
                    return false;
                }
            }
            return true;
        },

        contains: function (obj, target, fromIndex) {
            if (!_.isArrayLike(obj)) obj = _.values(obj);
            return _.indexOf(obj, target, typeof fromIndex === "number" && fromIndex) >= 0;
        },

        deepContains: function (obj, copy) {
            if (BI.isObject(copy)) {
                return BI.any(obj, function (i, v) {
                    if (BI.isEqual(v, copy)) {
                        return true;
                    }
                });
            }
            return BI.contains(obj, copy);
        },

        deepIndexOf: function (obj, target) {
            for (var i = 0; i < obj.length; i++) {
                if (BI.isEqual(target, obj[i])) {
                    return i;
                }
            }
            return -1;
        },

        deepRemove: function (obj, target) {
            var done = false;
            var i;
            if (BI.isArray(obj)) {
                for (i = 0; i < obj.length; i++) {
                    if (BI.isEqual(target, obj[i])) {
                        obj.splice(i--, 1);
                        done = true;
                    }
                }
            } else {
                BI.each(obj, function (i, v) {
                    if (BI.isEqual(target, obj[i])) {
                        delete obj[i];
                        done = true;
                    }
                });
            }
            return done;
        },

        deepWithout: function (obj, target) {
            if (BI.isArray(obj)) {
                var result = [];
                for (var i = 0; i < obj.length; i++) {
                    if (!BI.isEqual(target, obj[i])) {
                        result.push(obj[i]);
                    }
                }
                return result;
            }
            var result = {};
            BI.each(obj, function (i, v) {
                if (!BI.isEqual(target, obj[i])) {
                    result[i] = v;
                }
            });
            return result;

        },

        deepUnique: function (array) {
            var result = [];
            BI.each(array, function (i, item) {
                if (!BI.deepContains(result, item)) {
                    result.push(item);
                }
            });
            return result;
        },

        // 比较两个对象得出不一样的key值
        deepDiff: function (object, other) {
            object || (object = {});
            other || (other = {});
            var result = [];
            var used = [];
            for (var b in object) {
                if (this.has(object, b)) {
                    if (!this.isEqual(object[b], other[b])) {
                        result.push(b);
                    }
                    used.push(b);
                }
            }
            for (var b in other) {
                if (this.has(other, b) && !BI.contains(used, b)) {
                    result.push(b);
                }
            }
            return result;
        }
    });

    // 通用方法
    _.each(["uniqueId", "result", "chain", "iteratee", "escape", "unescape", "before", "after"], function (name) {
        BI[name] = function () {
            return _[name].apply(_, arguments);
        };
    });

    // 事件相关方法
    _.each(["bind", "once", "partial", "debounce", "throttle", "delay", "defer", "wrap"], function (name) {
        BI[name] = function () {
            return _[name].apply(_, arguments);
        };
    });

    _.extend(BI, {
        nextTick: (function () {
            var callbacks = [];
            var pending = false;
            var timerFunc = void 0;

            function nextTickHandler() {
                pending = false;
                var copies = callbacks.slice(0);
                callbacks.length = 0;
                for (var i = 0; i < copies.length; i++) {
                    copies[i]();
                }
            }

            if (typeof Promise !== "undefined") {
                var p = Promise.resolve();
                timerFunc = function timerFunc() {
                    p.then(nextTickHandler);
                };
            } else if (typeof MutationObserver !== "undefined") {
                var counter = 1;
                var observer = new MutationObserver(nextTickHandler);
                var textNode = document.createTextNode(String(counter));
                observer.observe(textNode, {
                    characterData: true
                });
                timerFunc = function timerFunc() {
                    counter = (counter + 1) % 2;
                    textNode.data = String(counter);
                };
            } else if (typeof setImmediate !== "undefined") {
                timerFunc = function timerFunc() {
                    setImmediate(nextTickHandler);
                };
            } else {
                // Fallback to setTimeout.
                timerFunc = function timerFunc() {
                    setTimeout(nextTickHandler, 0);
                };
            }

            return function queueNextTick(cb) {
                var _resolve = void 0;
                var args = [].slice.call(arguments, 1);
                callbacks.push(function () {
                    if (cb) {
                        try {
                            cb.apply(null, args);
                        } catch (e) {
                            console.error(e);
                        }
                    } else if (_resolve) {
                        _resolve.apply(null, args);
                    }
                });
                if (!pending) {
                    pending = true;
                    timerFunc();
                }
                // $flow-disable-line
                if (!cb && typeof Promise !== 'undefined') {
                    return new Promise(function (resolve, reject) {
                        _resolve = resolve;
                    });
                }
            };
        })()
    });

    // 数字相关方法
    _.each(["random"], function (name) {
        BI[name] = _apply(name);
    });
    _.extend(BI, {
        getTime: function () {
            if (_global.performance && _global.performance.now) {
                return _global.performance.now();
            }
            if (_global.performance && _global.performance.webkitNow) {
                return _global.performance.webkitNow();
            }
            if (Date.now) {
                return Date.now();
            }
            return BI.getDate().getTime();


        },

        parseInt: function (number) {
            var radix = 10;
            if (/^0x/g.test(number)) {
                radix = 16;
            }
            try {
                return parseInt(number, radix);
            } catch (e) {
                throw new Error(number + "parse int error");
                return NaN;
            }
        },

        parseSafeInt: function (value) {
            var MAX_SAFE_INTEGER = 9007199254740991;
            return value
                ? this.clamp(this.parseInt(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
                : (value === 0 ? value : 0);
        },

        parseFloat: function (number) {
            try {
                return parseFloat(number);
            } catch (e) {
                throw new Error(number + "parse float error");
                return NaN;
            }
        },

        isNaturalNumber: function (number) {
            if (/^\d+$/.test(number)) {
                return true;
            }
            return false;
        },

        isPositiveInteger: function (number) {
            if (/^\+?[1-9][0-9]*$/.test(number)) {
                return true;
            }
            return false;
        },

        isNegativeInteger: function (number) {
            if (/^\-[1-9][0-9]*$/.test(number)) {
                return true;
            }
            return false;
        },

        isInteger: function (number) {
            if (/^\-?\d+$/.test(number)) {
                return true;
            }
            return false;
        },

        isNumeric: function (number) {
            return !isNaN(parseFloat(number)) && isFinite(number);
        },

        isFloat: function (number) {
            if (/^([+-]?)\d*\.\d+$/.test(number)) {
                return true;
            }
            return false;
        },

        isOdd: function (number) {
            if (!BI.isInteger(number)) {
                return false;
            }
            return (number & 1) === 1;
        },

        isEven: function (number) {
            if (!BI.isInteger(number)) {
                return false;
            }
            return (number & 1) === 0;
        },

        sum: function (array, iteratee, context) {
            var sum = 0;
            BI.each(array, function (i, item) {
                if (iteratee) {
                    sum += Number(iteratee.apply(context, [i, item]));
                } else {
                    sum += Number(item);
                }
            });
            return sum;
        },

        average: function (array, iteratee, context) {
            var sum = BI.sum(array, iteratee, context);
            return sum / array.length;
        }
    });

    // 字符串相关方法
    _.extend(BI, {
        trim: function () {
            return _.trim.apply(_, arguments);
        },

        toUpperCase: function (string) {
            return (string + "").toLocaleUpperCase();
        },

        toLowerCase: function (string) {
            return (string + "").toLocaleLowerCase();
        },

        isEndWithBlank: function (string) {
            return /(\s|\u00A0)$/.test(string);
        },

        isLiteral: function (exp) {
            var literalValueRE = /^\s?(true|false|-?[\d\.]+|'[^']*'|"[^"]*")\s?$/;
            return literalValueRE.test(exp);
        },

        stripQuotes: function (str) {
            var a = str.charCodeAt(0);
            var b = str.charCodeAt(str.length - 1);
            return a === b && (a === 0x22 || a === 0x27)
                ? str.slice(1, -1)
                : str;
        },

        // background-color => backgroundColor
        camelize: function (str) {
            return str.replace(/-(.)/g, function (_, character) {
                return character.toUpperCase();
            });
        },

        // backgroundColor => background-color
        hyphenate: function (str) {
            return str.replace(/([A-Z])/g, "-$1").toLowerCase();
        },

        isNotEmptyString: function (str) {
            return BI.isString(str) && !BI.isEmpty(str);
        },

        isEmptyString: function (str) {
            return BI.isString(str) && BI.isEmpty(str);
        },

        /**
         * 通用加密方法
         */
        encrypt: function (type, text, key) {
            switch (type) {
                case BI.CRYPT_TYPE.AES:
                default:
                    return BI.aesEncrypt(text, key);
            }
        },

        /**
         * 通用解密方法
         * @param type 解密方式
         * @param text 文本
         * @param key 种子
         * @return {*}
         */
        decrypt: function (type, text, key) {
            switch (type) {
                case BI.CRYPT_TYPE.AES:
                default:
                    return BI.aesDecrypt(text, key);
            }
        },

        /**
         * 对字符串中的'和\做编码处理
         * @static
         * @param {String} string 要做编码处理的字符串
         * @return {String} 编码后的字符串
         */
        escape: function (string) {
            return string.replace(/('|\\)/g, "\\$1");
        },

        /**
         * 让字符串通过指定字符做补齐的函数
         *
         *      var s = BI.leftPad('123', 5, '0');//s的值为：'00123'
         *
         * @static
         * @param {String} val 原始值
         * @param {Number} size 总共需要的位数
         * @param {String} ch 用于补齐的字符
         * @return {String}  补齐后的字符串
         */
        leftPad: function (val, size, ch) {
            var result = String(val);
            if (!ch) {
                ch = " ";
            }
            while (result.length < size) {
                result = ch + result;
            }
            return result.toString();
        },

        /**
         * 对字符串做替换的函数
         *
         *      var cls = 'my-class', text = 'Some text';
         *      var res = BI.format('<div class="{0}">{1}</div>', cls, text);
         *      //res的值为：'<div class="my-class">Some text</div>';
         *
         * @static
         * @param {String} format 要做替换的字符串，替换字符串1，替换字符串2...
         * @return {String} 做了替换后的字符串
         */
        format: function (format) {
            var args = Array.prototype.slice.call(arguments, 1);
            return format.replace(/\{(\d+)\}/g, function (m, i) {
                return args[i];
            });
        }
    });

    // 日期相关方法
    _.extend(BI, {
        /**
         * 是否是闰年
         * @param year
         * @returns {boolean}
         */
        isLeapYear: function (year) {
            return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
        },

        /**
         * 检测是否在有效期
         *
         * @param YY 年
         * @param MM 月
         * @param DD 日
         * @param minDate '1900-01-01'
         * @param maxDate '2099-12-31'
         * @returns {Array} 若无效返回无效状态
         */
        checkDateVoid: function (YY, MM, DD, minDate, maxDate) {
            var back = [];
            YY = YY | 0;
            MM = MM | 0;
            DD = DD | 0;
            minDate = BI.isString(minDate) ? minDate.match(/\d+/g) : minDate;
            maxDate = BI.isString(maxDate) ? maxDate.match(/\d+/g) : maxDate;
            if (YY < minDate[0]) {
                back = ["y"];
            } else if (YY > maxDate[0]) {
                back = ["y", 1];
            } else if (YY >= minDate[0] && YY <= maxDate[0]) {
                if (YY == minDate[0]) {
                    if (MM < minDate[1]) {
                        back = ["m"];
                    } else if (MM == minDate[1]) {
                        if (DD < minDate[2]) {
                            back = ["d"];
                        }
                    }
                }
                if (YY == maxDate[0]) {
                    if (MM > maxDate[1]) {
                        back = ["m", 1];
                    } else if (MM == maxDate[1]) {
                        if (DD > maxDate[2]) {
                            back = ["d", 1];
                        }
                    }
                }
            }
            return back;
        },

        checkDateLegal: function (str) {
            var ar = str.match(/\d+/g);
            var YY = ar[0] | 0, MM = ar[1] | 0, DD = ar[2] | 0;
            if (ar.length <= 1) {
                return true;
            }
            if (ar.length <= 2) {
                return MM >= 1 && MM <= 12;
            }
            var MD = BI.Date._MD.slice(0);
            MD[1] = BI.isLeapYear(YY) ? 29 : 28;
            return MM >= 1 && MM <= 12 && DD <= MD[MM - 1];
        },

        parseDateTime: function (str, fmt) {
            var today = BI.getDate();
            var y = 0;
            var m = 0;
            var d = 1;
            // wei : 对于fmt为‘YYYYMM’或者‘YYYYMMdd’的格式，str的值为类似'201111'的形式，因为年月之间没有分隔符，所以正则表达式分割无效，导致bug7376。
            var a = str.split(/\W+/);
            if (fmt.toLowerCase() == "%y%x" || fmt.toLowerCase() == "%y%x%d") {
                var yearlength = 4;
                var otherlength = 2;
                a[0] = str.substring(0, yearlength);
                a[1] = str.substring(yearlength, yearlength + otherlength);
                a[2] = str.substring(yearlength + otherlength, yearlength + otherlength * 2);
            }
            var b = fmt.match(/%./g);
            var i = 0, j = 0;
            var hr = 0;
            var min = 0;
            var sec = 0;
            for (i = 0; i < a.length; ++i) {
                switch (b[i]) {
                    case "%d":
                    case "%e":
                        d = parseInt(a[i], 10);
                        break;

                    case "%X":
                        m = parseInt(a[i], 10) - 1;
                        break;
                    case "%x":
                        m = parseInt(a[i], 10) - 1;
                        break;

                    case "%Y":
                    case "%y":
                        y = parseInt(a[i], 10);
                        (y < 100) && (y += (y > 29) ? 1900 : 2000);
                        break;

                    case "%b":
                    case "%B":
                        for (j = 0; j < 12; ++j) {
                            if (BI.Date._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) {
                                m = j;
                                break;
                            }
                        }
                        break;

                    case "%H":
                    case "%I":
                    case "%k":
                    case "%l":
                        hr = parseInt(a[i], 10);
                        break;

                    case "%P":
                    case "%p":
                        if (/pm/i.test(a[i]) && hr < 12) {
                            hr += 12;
                        } else if (/am/i.test(a[i]) && hr >= 12) {
                            hr -= 12;
                        }
                        break;

                    case "%M":
                        min = parseInt(a[i], 10);
                    case "%S":
                        sec = parseInt(a[i], 10);
                        break;
                }
            }
            //    if (!a[i]) {
            //        continue;
            //	}
            if (isNaN(y)) {
                y = today.getFullYear();
            }
            if (isNaN(m)) {
                m = today.getMonth();
            }
            if (isNaN(d)) {
                d = today.getDate();
            }
            if (isNaN(hr)) {
                hr = today.getHours();
            }
            if (isNaN(min)) {
                min = today.getMinutes();
            }
            if (isNaN(sec)) {
                sec = today.getSeconds();
            }
            if (y != 0) {
                return BI.getDate(y, m, d, hr, min, sec);
            }
            y = 0;
            m = -1;
            d = 0;
            for (i = 0; i < a.length; ++i) {
                if (a[i].search(/[a-zA-Z]+/) != -1) {
                    var t = -1;
                    for (j = 0; j < 12; ++j) {
                        if (BI.Date._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) {
                            t = j;
                            break;
                        }
                    }
                    if (t != -1) {
                        if (m != -1) {
                            d = m + 1;
                        }
                        m = t;
                    }
                } else if (parseInt(a[i], 10) <= 12 && m == -1) {
                    m = a[i] - 1;
                } else if (parseInt(a[i], 10) > 31 && y == 0) {
                    y = parseInt(a[i], 10);
                    (y < 100) && (y += (y > 29) ? 1900 : 2000);
                } else if (d == 0) {
                    d = a[i];
                }
            }
            if (y == 0) {
                y = today.getFullYear();
            }
            if (m != -1 && d != 0) {
                return BI.getDate(y, m, d, hr, min, sec);
            }
            return today;
        },

        getDate: function () {
            var length = arguments.length;
            var args = arguments;
            var dt;
            switch (length) {
                // new Date()
                case 0:
                    dt = new Date();
                    break;
                // new Date(long)
                case 1:
                    dt = new Date(args[0]);
                    break;
                // new Date(year, month)
                case 2:
                    dt = new Date(args[0], args[1]);
                    break;
                // new Date(year, month, day)
                case 3:
                    dt = new Date(args[0], args[1], args[2]);
                    break;
                // new Date(year, month, day, hour)
                case 4:
                    dt = new Date(args[0], args[1], args[2], args[3]);
                    break;
                // new Date(year, month, day, hour, minute)
                case 5:
                    dt = new Date(args[0], args[1], args[2], args[3], args[4]);
                    break;
                // new Date(year, month, day, hour, minute, second)
                case 6:
                    dt = new Date(args[0], args[1], args[2], args[3], args[4], args[5]);
                    break;
                // new Date(year, month, day, hour, minute, second, millisecond)
                case 7:
                    dt = new Date(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
                    break;
                default:
                    dt = new Date();
                    break;
            }
            if (BI.isNotNull(BI.timeZone) && (arguments.length === 0 || (arguments.length === 1 && BI.isNumber(arguments[0])))) {
                var localTime = dt.getTime();
                // BI-33791 1901年以前的东8区标准是GMT+0805, 统一无论是什么时间，都以整的0800这样的为基准
                var localOffset = dt.getTimezoneOffset() * 60000; // 获得当地时间偏移的毫秒数
                var utc = localTime + localOffset; // utc即GMT时间标准时区
                return new Date(utc + BI.timeZone);// + Pool.timeZone.offset);
            }
            return dt;

        },

        getTime: function () {
            var length = arguments.length;
            var args = arguments;
            var dt;
            switch (length) {
                // new Date()
                case 0:
                    dt = new Date();
                    break;
                // new Date(long)
                case 1:
                    dt = new Date(args[0]);
                    break;
                // new Date(year, month)
                case 2:
                    dt = new Date(args[0], args[1]);
                    break;
                // new Date(year, month, day)
                case 3:
                    dt = new Date(args[0], args[1], args[2]);
                    break;
                // new Date(year, month, day, hour)
                case 4:
                    dt = new Date(args[0], args[1], args[2], args[3]);
                    break;
                // new Date(year, month, day, hour, minute)
                case 5:
                    dt = new Date(args[0], args[1], args[2], args[3], args[4]);
                    break;
                // new Date(year, month, day, hour, minute, second)
                case 6:
                    dt = new Date(args[0], args[1], args[2], args[3], args[4], args[5]);
                    break;
                // new Date(year, month, day, hour, minute, second, millisecond)
                case 7:
                    dt = new Date(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
                    break;
                default:
                    dt = new Date();
                    break;
            }
            if (BI.isNotNull(BI.timeZone)) {
                // BI-33791 1901年以前的东8区标准是GMT+0805, 统一无论是什么时间，都以整的0800这样的为基准
                return dt.getTime() - BI.timeZone - new Date().getTimezoneOffset() * 60000;
            }
            return dt.getTime();

        }
    });
})();