webuploader2.html 35.8 KB

原文件审查历史永久链接

<include file="public@header"/>
<link rel="stylesheet" type="text/css" href="__ROOT__/static/js/webuploader/webuploader.css">
<link rel="stylesheet" type="text/css" href="__ROOT__/static/js/webuploader/image-upload/style.css">
<style>
    .state-complete .progress {
        display: none;
    }
</style>
</head>
<body class="body_none">

<div class="wrap " style="padding:5px;">
    <ul class="nav nav-tabs">
        <li class="active"><a href="#wrapper" data-toggle="tab">上传文件</a></li>
        <!--<li class=""><a href="#B" data-toggle="tab">网络文件</a></li>-->
        <!--<li class=""><a href="#explorer" data-toggle="tab">文件管理</a></li>-->
    </ul>
    <div class="tabbable">
        <div class="tab-content ">
            <div class="tab-pane active" id="wrapper">

                <div id="container">
                    <!--头部，相册选择和格式选择-->
                    <div id="uploader">
                        <div class="queueList">
                            <div id="dndArea" class="placeholder">
                                <div id="filePicker"></div>
                                <p>或将文件拖到这里，单次最多可选{$max_files}个文件</p>
                            </div>
                        </div>
                        <div class="statusBar" style="display:none;">
                            <div class="progress">
                                <span class="text">0%</span>
                                <span class="percentage"></span>
                            </div>
                            <div class="info"></div>
                            <div class="btns">
                                <div id="filePicker2"></div>
                                <div class="uploadBtn">开始上传</div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="tab-pane" id="B"> 请输入网络地址
                <div class="bk3"></div>
                <input type="hidden" id="img_name" value="">
                <input type="text" id="info" name="info[filename]" class="input form-control" value=""
                       style="width:600px;" placeholder="http://" onblur="addonlinefile(this)">
            </div>
            <div class="tab-pane" id="explorer">
                <div class="bk3"></div>

            </div>

        </div>
    </div>

</div>

<script src="__ROOT__/static/js/admin.js"></script>
<script src="__ROOT__/static/js/webuploader/webuploader.min.js"></script>


<script type="text/javascript">

    var options = {
        host : "http://upload.qiniu.com",
        tokenUrl : "{:url('user/asset/getQiNiuToken','','',true)}",
        domain : "http://{$qiniu_config['domain']}/",
        mockToken : true,
        mockTokenValue : "{$token}",
        hash : true,
        save_key: true
    }
    var token="{$token}";
    var m = new Map();
    var httpUrl = "{:cmf_get_asset_url('')}";
    function get_selected_files() {
        var files = [];

        var idPre = 'id' + new Date().getTime();

        if (jQuery("#wrapper").is(":hidden")) {
            var file         = new Object();
            file.id          = idPre + '1';
            file.filepath    = jQuery("#info").val();
            file.preview_url = file.filepath;
            file.url         = file.filepath;
            file.name        = "";//jQuery(".filelist li .title").eq(i).html();
            files.push(file);
        } else {
            var number = jQuery(".filelist li").size();
            for (var i = 0; i < number; i++) {

                var file         = new Object();
                var $file        = jQuery(".filelist li").eq(i);
                file.id          = idPre + i;
                file.filepath    = $file.data("filepath");
                file.preview_url = $file.data("preview_url");//httpUrl+file.filepath;
                file.url         = $file.data("url");
                file.name        = $file.data("name");
                if (file.url == undefined) {
                    continue;
                } else {
                    files.push(file);
                }

            }
        }

        return files;
    }

    var multi    = {$multi};//是否允许同时选多个文件
    var maxFiles = {$max_files};//允许上传多少文件

    var fileErrorMsg = {};


    (function ($) {
        // 当domReady的时候开始初始化
        $(function () {
            var $wrap             = $('#uploader'),
                // 图片容器
                $queue            = $('<ul class="filelist"></ul>').appendTo($wrap.find('.queueList')),
                // 状态栏，包括进度和控制按钮
                $statusBar        = $wrap.find('.statusBar'),
                // 文件总体选择信息。
                $info             = $statusBar.find('.info'),
                // 上传按钮
                $upload           = $wrap.find('.uploadBtn').hide(),
                // 没选择文件之前的内容。
                $placeHolder      = $wrap.find('.placeholder'),
                $progress         = $statusBar.find('.progress').hide(),
                // 添加的文件数量
                fileCount         = 0,
                // 添加的文件总大小
                fileSize          = 0,
                // 优化retina, 在retina下这个值是2
                ratio             = window.devicePixelRatio || 1,
                // 缩略图大小
                thumbnailWidth    = 110 * ratio,
                thumbnailHeight   = 110 * ratio,
                // 可能有pedding, ready, uploading, confirm, done.
                state             = 'pedding',
                // 所有文件的进度信息，key为file id
                percentages       = {},
                // 判断浏览器是否支持图片的base64
                isSupportBase64   = (function () {
                    var data    = new Image();
                    var support = true;
                    data.onload = data.onerror = function () {
                        if (this.width != 1 || this.height != 1) {
                            support = false;
                        }
                    }
                    data.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";
                    return support;
                })(),
                // 检测是否已经安装flash，检测flash的版本
                flashVersion      = (function () {
                    var version;
                    try {
                        version = navigator.plugins['Shockwave Flash'];
                        version = version.description;
                    } catch (ex) {
                        try {
                            version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
                        } catch (ex2) {
                            version = '0.0';
                        }
                    }
                    version = version.match(/\d+/g);
                    return parseFloat(version[0] + '.' + version[1], 10);
                })(),

                supportTransition = (function () {
                    var s = document.createElement('p').style,
                        r = 'transition' in s ||
                            'WebkitTransition' in s ||
                            'MozTransition' in s ||
                            'msTransition' in s ||
                            'OTransition' in s;
                    s     = null;
                    return r;
                })(),

                // WebUploader实例
                uploader;

            if (!WebUploader.Uploader.support('flash') && WebUploader.browser.ie) {

                // flash 安装了但是版本过低。
                if (flashVersion) {
                    (function (container) {
                        window['expressinstallcallback'] = function (state) {
                            switch (state) {
                                case 'Download.Cancelled':
                                    alert('您取消了更新！')
                                    break;

                                case 'Download.Failed':
                                    alert('安装失败')
                                    break;

                                default:
                                    alert('安装已成功，请刷新！');
                                    break;
                            }
                            delete window['expressinstallcallback'];
                        };

                        var swf  = './expressInstall.swf';
                        // insert flash object
                        var html = '<object type="application/' +
                            'x-shockwave-flash" data="' + swf + '" ';

                        if (WebUploader.browser.ie) {
                            html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ';
                        }

                        html += 'width="100%" height="100%" style="outline:0">' +
                            '<param name="movie" value="' + swf + '" />' +
                            '<param name="wmode" value="transparent" />' +
                            '<param name="allowscriptaccess" value="always" />' +
                            '</object>';

                        container.html(html);

                    })($wrap);

                    // 压根就没有安转。
                } else {
                    $wrap.html('<a href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0"><img alt="get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" /></a>');
                }

                return;
            } else if (!WebUploader.Uploader.support()) {
                alert('Web Uploader 不支持您的浏览器！');
                return;
            }

            // 实例化
            uploader = WebUploader.create({
                pick: {
                    id: '#filePicker',
                    label: '点击选择文件',
                    multiple: multi,
                },
                formData: {
                    app: '{$app}',
                    filetype: '{$filetype}'
                },
                accept: {
                    extensions: '{$extensions}'
                },
                dnd: '#dndArea',
                paste: '#uploader',
                swf: GV.WEB_ROOT + GV.JS_ROOT + 'webuploader/Uploader.swf',
                chunked: true,//开启分片
                auto: true,
                chunkSize: {$chunk_size} * 1024,// 单位B
                compress: false,
                server: options.host,
                // 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候，把图片打开。
                disableGlobalDnd: true,
                fileNumLimit: maxFiles,
                runtimeOrder: 'html5,flash',
                //fileSizeLimit: 200 * 1024 * 1024,    // 200 M
                fileSingleSizeLimit: {$upload_max_filesize}     // 单位B
            });

            // 拖拽时不接受 js, txt 文件。
            uploader.on('dndAccept', function (items) {
                var denied    = false,
                    len       = items.length,
                    i         = 0,
                    // 修改js类型
                    unAllowed = 'text/plain;application/javascript ';

                for (; i < len; i++) {
                    // 如果在列表里面
                    if (~unAllowed.indexOf(items[i].type)) {
                        denied = true;
                        break;
                    }
                }

                return !denied;
            });

            // uploader.on('filesQueued', function() {
            //     uploader.sort(function( a, b ) {
            //         if ( a.name < b.name )
            //           return -1;
            //         if ( a.name > b.name )
            //           return 1;
            //         return 0;
            //     });
            // });
            if (maxFiles > 1) {
                // 添加“添加文件”的按钮，
                uploader.addButton({
                    id: '#filePicker2',
                    label: '继续添加'
                });
            }
            uploader.on('ready', function () {
                window.uploader = uploader;
            });

            uploader.on("uploadStart", function(file){
                if(!options.mockToken) {
                    GetToken(options.tokenUrl, file);
                } else {
                    uploader.options.formData = {
                        token : options.mockTokenValue
                    }
                    token = options.mockTokenValue;
                }
            });

            uploader.on("uploadBeforeSend", function (block, data, headers) {
                //console.log("uploadBeforeSend............")
                if (parseInt(block.file.size) <= parseInt(uploader.options.chunkSize)) {
                    uploader.options.chunked = false;
                    //console.log("使用表单上传.........");
                } else {
                    uploader.options.chunked = true;
                    uploader.options.save_key =true;
                    headers['Authorization'] = 'UpToken ' + token;
                    headers['Content-Type'] = 'application/octet-stream';
                    block.transport.options.server = options.host + "/mkblk/" + (block.end - block.start);
                    block.transport.options.sendAsBinary = true;
                    block.transport.options.formData = false;
                    //console.log(true);
                }
            });

            // 当有文件添加进来时执行，负责view的创建
            function addFile(file) {
                var $li       = $('<li id="' + file.id + '">' +
                        '<p class="title">' + file.name + '</p>' +
                        '<p class="imgWrap"></p>' +
                        '<p class="progress"><span></span></p>' +
                        '</li>'),

                    $btns     = $('<div class="file-panel">' +
                        '<span class="cancel">删除</span>' +
                        '<span class="rotateRight">向右旋转</span>' +
                        '<span class="rotateLeft">向左旋转</span></div>').appendTo($li),
                    $prgress  = $li.find('p.progress span'),
                    $wrap     = $li.find('p.imgWrap'),
                    $info     = $('<p class="error"></p>'),

                    showError = function (code) {
                        switch (code) {
                            case 'exceed_size':
                                text = '文件大小超出';
                                break;

                            case 'interrupt':
                                text = '上传暂停';
                                break;

                            default:
                                text = '上传失败，请重试';
                                break;
                        }

                        $info.text(text).appendTo($li);
                    };

                if (file.getStatus() === 'invalid') {
                    showError(file.statusText);
                } else {
                    // @todo lazyload
                    $wrap.text('预览中');
                    uploader.makeThumb(file, function (error, src) {
                        var img;

                        if (error) {
                            $wrap.text('不能预览');
                            return;
                        }

                        if (isSupportBase64) {
                            img = $('<img src="' + src + '">');
                            $wrap.empty().append(img);
                        } else {
                            $.ajax('../../server/preview.php', {
                                method: 'POST',
                                data: src,
                                dataType: 'json'
                            }).done(function (response) {
                                if (response.result) {
                                    img = $('<img src="' + response.result + '">');
                                    $wrap.empty().append(img);
                                } else {
                                    $wrap.text("预览出错");
                                }
                            });
                        }
                    }, thumbnailWidth, thumbnailHeight);

                    percentages[file.id] = [file.size, 0];
                    file.rotation        = 0;
                }

                file.on('statuschange', function (cur, prev) {
                    if (prev === 'progress') {
                        $prgress.hide().width(0);
                    } else if (prev === 'queued') {
                        $li.off('mouseenter mouseleave');
                        $btns.remove();
                    }

                    // 成功
                    if (cur === 'error' || cur === 'invalid') {
                        //console.log(file.statusText);
                        showError(file.statusText);
                        percentages[file.id][1] = 1;
                    } else if (cur === 'interrupt') {
                        showError('interrupt');
                    } else if (cur === 'queued') {
                        percentages[file.id][1] = 0;
                    } else if (cur === 'progress') {
                        $info.remove();
                        $prgress.css('display', 'block');
                    } else if (cur === 'complete') {
                        $li.append('<span class="success"></span>');
                    }

                    $li.removeClass('state-' + prev).addClass('state-' + cur);
                });

                $li.on('mouseenter', function () {
                    $btns.stop().animate({height: 30});
                });

                $li.on('mouseleave', function () {
                    $btns.stop().animate({height: 0});
                });

                $btns.on('click', 'span', function () {
                    var index = $(this).index(),
                        deg;

                    switch (index) {
                        case 0:
                            uploader.removeFile(file);
                            return;

                        case 1:
                            file.rotation += 90;
                            break;

                        case 2:
                            file.rotation -= 90;
                            break;
                    }

                    if (supportTransition) {
                        deg = 'rotate(' + file.rotation + 'deg)';
                        $wrap.css({
                            '-webkit-transform': deg,
                            '-mos-transform': deg,
                            '-o-transform': deg,
                            'transform': deg
                        });
                    } else {
                        $wrap.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (~~((file.rotation / 90) % 4 + 4) % 4) + ')');
                        // use jquery animate to rotation
                        // $({
                        //     rotation: rotation
                        // }).animate({
                        //     rotation: file.rotation
                        // }, {
                        //     easing: 'linear',
                        //     step: function( now ) {
                        //         now = now * Math.PI / 180;

                        //         var cos = Math.cos( now ),
                        //             sin = Math.sin( now );

                        //         $wrap.css( 'filter', "progid:DXImageTransform.Microsoft.Matrix(M11=" + cos + ",M12=" + (-sin) + ",M21=" + sin + ",M22=" + cos + ",SizingMethod='auto expand')");
                        //     }
                        // });
                    }


                });

                $li.appendTo($queue);
            }

            // 负责view的销毁
            function removeFile(file) {
                var $li = $('#' + file.id);

                delete percentages[file.id];
                updateTotalProgress();
                $li.off().find('.file-panel').off().end().remove();
            }

            function updateTotalProgress() {
                var loaded = 0,
                    total  = 0,
                    spans  = $progress.children(),
                    percent;

                $.each(percentages, function (k, v) {
                    total += v[0];
                    loaded += v[0] * v[1];
                });

                percent = total ? loaded / total : 0;


                spans.eq(0).text(Math.round(percent * 100) + '%');
                spans.eq(1).css('width', Math.round(percent * 100) + '%');
                updateStatus();
            }

            function updateStatus() {
                var text = '', stats;

                if (state === 'ready') {
                    text = '选中' + fileCount + '个文件，共' +
                        WebUploader.formatSize(fileSize) + '。';
                } else if (state === 'confirm') {

                    stats = uploader.getStats();
                    if (stats.uploadFailNum) {
                        text = '已成功上传' + stats.successNum + '个文件，' +
                            stats.uploadFailNum + '个文件上传失败，<a class="retry" href="#">重新上传</a>失败文件或忽略'
                    }

                } else {
                    stats = uploader.getStats();
                    text  = '共' + fileCount + '个文件（' +
                        WebUploader.formatSize(fileSize) +
                        '），已上传' + stats.successNum + '个';

                    if (stats.uploadFailNum) {
                        text += '，失败' + stats.uploadFailNum + '个';
                    }
                }

                $info.html(text);
            }

            function setState(val) {
                var file, stats;

                if (val === state) {
                    return;
                }

                $upload.removeClass('state-' + state);
                $upload.addClass('state-' + val);
                state = val;

                switch (state) {
                    case 'pedding':
                        $placeHolder.removeClass('element-invisible');
                        $queue.hide();
                        $statusBar.addClass('element-invisible');
                        uploader.refresh();
                        break;

                    case 'ready':
                        $placeHolder.addClass('element-invisible');
                        $('#filePicker2').removeClass('element-invisible');
                        $queue.show();
                        $statusBar.removeClass('element-invisible');
                        uploader.refresh();
                        break;

                    case 'uploading':
                        $('#filePicker2').addClass('element-invisible');
                        $progress.show();
                        $upload.text('暂停上传');
                        break;

                    case 'paused':
                        $progress.show();
                        $upload.text('继续上传');
                        break;

                    case 'confirm':
                        $progress.hide();
                        $('#filePicker2').removeClass('element-invisible');
                        $upload.text('开始上传');

                        stats = uploader.getStats();
                        if (stats.successNum && !stats.uploadFailNum) {
                            setState('finish');
                            return;
                        }
                        break;
                    case 'finish':
                        stats = uploader.getStats();
                        if (stats.successNum) {
                            //alert( '上传成功' );
                        } else {
                            // 没有成功的图片，重设
                            state = 'done';
                            location.reload();
                        }
                        break;
                }

                updateStatus();
            }

            uploader.onUploadProgress = function (file, percentage) {
                var $li      = $('#' + file.id),
                    $percent = $li.find('.progress span');

                $percent.css('width', percentage * 100 + '%');
                percentages[file.id][1] = percentage;
                updateTotalProgress();
            };

            uploader.onFileQueued = function (file) {
                fileCount++;
                fileSize += file.size;

                if (fileCount === 1) {
                    $placeHolder.addClass('element-invisible');
                    $statusBar.show();
                }
                var ctx = new Array();
                m.set(file.name, ctx);
                addFile(file);
                setState('ready');
                updateTotalProgress();
            };

            uploader.onFileDequeued = function (file) {
                fileCount--;
                fileSize -= file.size;

                if (!fileCount) {
                    setState('pedding');
                }

                removeFile(file);
                updateTotalProgress();

            };

            uploader.on('all', function (type, file, msg) {
                var stats;
                switch (type) {
                    case 'uploadSuccess':
                       //  console.log('file');
                       // console.log(file);
                       //  console.log('msg');
                       // console.log(msg);
                        if (msg._raw != '') {
                            var $file = jQuery("#" + file.id);
                            if(parseInt(file.size) > parseInt(uploader.options.chunkSize)) {
                                MakeFile(m.get(file.name), file, options.hash ,$file);
                            }else{
                                $file.data("filepath", options.domain+msg.key);
                                $file.data("name", file.name);
                                $file.data("url", options.domain+msg.key);
                                $file.data("preview_url", options.domain+msg.key);
                            }

                        }
                        break;
                    case 'uploadFinished':
                        setState('confirm');
                        break;

                    case 'startUpload':
                        setState('uploading');
                        break;

                    case 'stopUpload':
                        setState('paused');
                        break;

                }
            });

            uploader.on("uploadAccept", function (object, ret) {
                //console.log(object);
                //console.log(ret);
                m.get(object.file.name)[object.chunk] = ret.ctx;
                if (ret.code == 0) {
                    fileErrorMsg[object.file.id] = ret.msg;
                    return false;
                }

                return true;

            });

            uploader.on('uploadError', function (file, reason) {
                //console.log(file.id);
                //console.log(reason);
                if (reason == 'server') {
                    $('#' + file.id).find('p.error').text(fileErrorMsg[file.id]);
                }

            });

            uploader.onError = function (code) {
                switch (code) {
                    case "Q_TYPE_DENIED":
                        code = "文件类型错误！";
                        break;
                    case "Q_EXCEED_NUM_LIMIT":
                        code = "最多只能上传" + maxFiles + '个文件';
                        break;
                    case "F_DUPLICATE":
                        code = "文件重复添加！";
                        break;
                    case "F_EXCEED_SIZE":
                        code = "您需要选择小于{$upload_max_filesize_mb}M的文件！";
                        break;
                }
                alert(code);
            };

            $upload.on('click', function () {
                if ($(this).hasClass('disabled')) {
                    return false;
                }

                if (state === 'ready') {
                    uploader.upload();
                } else if (state === 'paused') {
                    uploader.upload();
                } else if (state === 'uploading') {
                    uploader.stop();
                }
            });

            $info.on('click', '.retry', function () {
                uploader.retry();
            });

            $info.on('click', '.ignore', function () {
                alert('todo');
            });

            $upload.addClass('state-' + state);
            updateTotalProgress();
        });

        function GetToken(tokenUrl, file) {
            $.ajax({
                async:false,
                type: 'get',
                url: tokenUrl,
                success: function (token) {
                    if(options.hash) {
                        uploader.options.formData = {
                            token : token,
                        }
                    } else {
                        uploader.options.formData = {
                            token : token,
                            key: file.name
                        }
                    }
                }
            });
        }

        function MakeFile(ctx, file, hash,obj) {
            var b = ctx.join(",");
            if(hash){
                $.ajax({
                    type: 'POST',
                    url: options.host + '/mkfile/' + file.size,
                    data: b,
                    contentType: "text/plain",
                    contentLength: b.length,
                    beforeSend: function (XMLHttpRequest) {
                        XMLHttpRequest.setRequestHeader("Authorization", 'UpToken ' + token);
                    },
                    success: function(res){
                        UploadComplete(file, res,obj);
                    }
                });
            } else {
                $.ajax({
                    type: 'POST',
                    url: options.host + '/mkfile/' + file.size + '/key/' + URLSafeBase64Encode(file.name),
                    data: b,
                    contentType: "text/plain",
                    contentLength: b.length,
                    beforeSend: function (XMLHttpRequest) {
                        XMLHttpRequest.setRequestHeader("Authorization", 'UpToken ' + token);
                    },
                    success: function(res){
                        UploadComplete(file, res,obj);
                    }
                });
            }
        }

        function UploadComplete(file,res,$file) {
            // console.log(file);
            // console.log(res);
            ctx = new Array();
            uploader.options.chunked = true;
            $file.data("filepath", options.domain+res.key);
            $file.data("name", file.name);
            $file.data("url", options.domain+res.key);
            $file.data("preview_url", options.domain+res.key);
        }

        function URLSafeBase64Decode(data){
            data = data.replace(/_/g, '/').replace(/-/g, '+');
            var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
            var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
                ac = 0,
                dec = "",
                tmp_arr = [];

            if (!data) {
                return data;
            }

            data += '';

            do { // unpack four hexets into three octets using index points in b64
                h1 = b64.indexOf(data.charAt(i++));
                h2 = b64.indexOf(data.charAt(i++));
                h3 = b64.indexOf(data.charAt(i++));
                h4 = b64.indexOf(data.charAt(i++));

                bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;

                o1 = bits >> 16 & 0xff;
                o2 = bits >> 8 & 0xff;
                o3 = bits & 0xff;

                if (h3 === 64) {
                    tmp_arr[ac++] = String.fromCharCode(o1);
                } else if (h4 === 64) {
                    tmp_arr[ac++] = String.fromCharCode(o1, o2);
                } else {
                    tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
                }
            } while (i < data.length);

            dec = tmp_arr.join('');

            return dec;
        }

        function utf8_encode(argString) {

            if (argString === null || typeof argString === 'undefined') {
                return '';
            }

            var string = (argString + ''); // .replace(/\r\n/g, '\n').replace(/\r/g, '\n');
            var utftext = '',
                start, end, stringl = 0;

            start = end = 0;
            stringl = string.length;
            for (var n = 0; n < stringl; n++) {
                var c1 = string.charCodeAt(n);
                var enc = null;

                if (c1 < 128) {
                    end++;
                } else if (c1 > 127 && c1 < 2048) {
                    enc = String.fromCharCode(
                        (c1 >> 6) | 192, (c1 & 63) | 128
                    );
                } else if (c1 & 0xF800 ^ 0xD800 > 0) {
                    enc = String.fromCharCode(
                        (c1 >> 12) | 224, ((c1 >> 6) & 63) | 128, (c1 & 63) | 128
                    );
                } else { // surrogate pairs
                    if (c1 & 0xFC00 ^ 0xD800 > 0) {
                        throw new RangeError('Unmatched trail surrogate at ' + n);
                    }
                    var c2 = string.charCodeAt(++n);
                    if (c2 & 0xFC00 ^ 0xDC00 > 0) {
                        throw new RangeError('Unmatched lead surrogate at ' + (n - 1));
                    }
                    c1 = ((c1 & 0x3FF) << 10) + (c2 & 0x3FF) + 0x10000;
                    enc = String.fromCharCode(
                        (c1 >> 18) | 240, ((c1 >> 12) & 63) | 128, ((c1 >> 6) & 63) | 128, (c1 & 63) | 128
                    );
                }
                if (enc !== null) {
                    if (end > start) {
                        utftext += string.slice(start, end);
                    }
                    utftext += enc;
                    start = end = n + 1;
                }
            }

            if (end > start) {
                utftext += string.slice(start, stringl);
            }

            return utftext;
        }

        function URLSafeBase64Encode(data) {
            var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
            var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
                ac = 0,
                enc = '',
                tmp_arr = [];

            if (!data) {
                return data;
            }

            data = utf8_encode(data + '');

            do { // pack three octets into four hexets
                o1 = data.charCodeAt(i++);
                o2 = data.charCodeAt(i++);
                o3 = data.charCodeAt(i++);

                bits = o1 << 16 | o2 << 8 | o3;

                h1 = bits >> 18 & 0x3f;
                h2 = bits >> 12 & 0x3f;
                h3 = bits >> 6 & 0x3f;
                h4 = bits & 0x3f;

                // use hexets to index into b64, and append result to encoded string
                tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
            } while (i < data.length);

            enc = tmp_arr.join('');

            switch (data.length % 3) {
                case 1:
                    enc = enc.slice(0, -2) + '==';
                    break;
                case 2:
                    enc = enc.slice(0, -1) + '=';
                    break;
            }

            return enc.replace(/\//g, '_').replace(/\+/g, '-');
        }

    })(jQuery);


</script>
</body>
</html>