src/sap.ui.core/src/sap/ui/thirdparty/jszip.js
function(options) {
        options = extend(options || {}, {
            base64: true,
            compression: "STORE",
            type: "base64"
        });

        utils.checkSupport(options.type);

        var zipData = [],
            localDirLength = 0,
            centralDirLength = 0,
            writer, i;


        // first, generate all the zip parts.
        for (var name in this.files) {
            if (!this.files.hasOwnProperty(name)) {
                continue;
            }
            var file = this.files[name];

            var compressionName = file.options.compression || options.compression.toUpperCase();
            var compression = compressions[compressionName];
            if (!compression) {
                throw new Error(compressionName + " is not a valid compression method !");
            }

            var compressedObject = generateCompressedObjectFrom.call(this, file, compression);

            var zipPart = generateZipParts.call(this, name, file, compressedObject, localDirLength);
            localDirLength += zipPart.fileRecord.length + compressedObject.compressedSize;
            centralDirLength += zipPart.dirRecord.length;
            zipData.push(zipPart);
        }

        var dirEnd = "";

        // end of central dir signature
        dirEnd = signature.CENTRAL_DIRECTORY_END +
        // number of this disk
        "\x00\x00" +
        // number of the disk with the start of the central directory
        "\x00\x00" +
        // total number of entries in the central directory on this disk
        decToHex(zipData.length, 2) +
        // total number of entries in the central directory
        decToHex(zipData.length, 2) +
        // size of the central directory   4 bytes
        decToHex(centralDirLength, 4) +
        // offset of start of central directory with respect to the starting disk number
        decToHex(localDirLength, 4) +
        // .ZIP file comment length
        "\x00\x00";


        // we have all the parts (and the total length)
        // time to create a writer !
        var typeName = options.type.toLowerCase();
        if(typeName==="uint8array"||typeName==="arraybuffer"||typeName==="blob"||typeName==="nodebuffer") {
            writer = new Uint8ArrayWriter(localDirLength + centralDirLength + dirEnd.length);
        }else{
            writer = new StringWriter(localDirLength + centralDirLength + dirEnd.length);
        }

        for (i = 0; i < zipData.length; i++) {
            writer.append(zipData[i].fileRecord);
            writer.append(zipData[i].compressedObject.compressedContent);
        }
        for (i = 0; i < zipData.length; i++) {
            writer.append(zipData[i].dirRecord);
        }

        writer.append(dirEnd);

        var zip = writer.finalize();



        switch(options.type.toLowerCase()) {
            // case "zip is an Uint8Array"
            case "uint8array" :
            case "arraybuffer" :
            case "nodebuffer" :
               return utils.transformTo(options.type.toLowerCase(), zip);
            case "blob" :
               return utils.arrayBuffer2Blob(utils.transformTo("arraybuffer", zip));
            // case "zip is a string"
            case "base64" :
               return (options.base64) ? base64.encode(zip) : zip;
            default : // case "string" :
               return zip;
         }

    }
function(options) {
        options = extend(options || {}, {
            base64: true,
            compression: "STORE",
            type: "base64"
        });

        utils.checkSupport(options.type);

        var zipData = [],
            localDirLength = 0,
            centralDirLength = 0,
            writer, i;


        // first, generate all the zip parts.
        for (var name in this.files) {
            if (!this.files.hasOwnProperty(name)) {
                continue;
            }
            var file = this.files[name];

            var compressionName = file.options.compression || options.compression.toUpperCase();
            var compression = compressions[compressionName];
            if (!compression) {
                throw new Error(compressionName + " is not a valid compression method !");
            }

            var compressedObject = generateCompressedObjectFrom.call(this, file, compression);

            var zipPart = generateZipParts.call(this, name, file, compressedObject, localDirLength);
            localDirLength += zipPart.fileRecord.length + compressedObject.compressedSize;
            centralDirLength += zipPart.dirRecord.length;
            zipData.push(zipPart);
        }

        var dirEnd = "";

        // end of central dir signature
        dirEnd = signature.CENTRAL_DIRECTORY_END +
        // number of this disk
        "\x00\x00" +
        // number of the disk with the start of the central directory
        "\x00\x00" +
        // total number of entries in the central directory on this disk
        decToHex(zipData.length, 2) +
        // total number of entries in the central directory
        decToHex(zipData.length, 2) +
        // size of the central directory   4 bytes
        decToHex(centralDirLength, 4) +
        // offset of start of central directory with respect to the starting disk number
        decToHex(localDirLength, 4) +
        // .ZIP file comment length
        "\x00\x00";


        // we have all the parts (and the total length)
        // time to create a writer !
        var typeName = options.type.toLowerCase();
        if(typeName==="uint8array"||typeName==="arraybuffer"||typeName==="blob"||typeName==="nodebuffer") {
            writer = new Uint8ArrayWriter(localDirLength + centralDirLength + dirEnd.length);
        }else{
            writer = new StringWriter(localDirLength + centralDirLength + dirEnd.length);
        }

        for (i = 0; i < zipData.length; i++) {
            writer.append(zipData[i].fileRecord);
            writer.append(zipData[i].compressedObject.compressedContent);
        }
        for (i = 0; i < zipData.length; i++) {
            writer.append(zipData[i].dirRecord);
        }

        writer.append(dirEnd);

        var zip = writer.finalize();



        switch(options.type.toLowerCase()) {
            // case "zip is an Uint8Array"
            case "uint8array" :
            case "arraybuffer" :
            case "nodebuffer" :
               return utils.transformTo(options.type.toLowerCase(), zip);
            case "blob" :
               return utils.arrayBuffer2Blob(utils.transformTo("arraybuffer", zip));
            // case "zip is a string"
            case "base64" :
               return (options.base64) ? base64.encode(zip) : zip;
            default : // case "string" :
               return zip;
         }

    }
function ( options ) { options = extend ( options || { } , { base64 : true , compression : "STORE" , type : "base64" } ) ; utils . checkSupport ( options . type ) ; var zipData = [ ] , localDirLength = 0 , centralDirLength = 0 , writer , i ; // first, generate all the zip parts. for ( var name in this . files ) { if ( ! this . files . hasOwnProperty ( name ) ) { continue ; } var file = this . files [ name ] ; var compressionName = file . options . compression || options . compression . toUpperCase ( ) ; var compression = compressions [ compressionName ] ; if ( ! compression ) { throw new Error ( compressionName + " is not a valid compression method !" ) ; } var compressedObject = generateCompressedObjectFrom . call ( this , file , compression ) ; var zipPart = generateZipParts . call ( this , name , file , compressedObject , localDirLength ) ; localDirLength += zipPart . fileRecord . length + compressedObject . compressedSize ; centralDirLength += zipPart . dirRecord . length ; zipData . push ( zipPart ) ; } var dirEnd = "" ; // end of central dir signature dirEnd = signature . CENTRAL_DIRECTORY_END + // number of this disk "\x00\x00" + // number of the disk with the start of the central directory "\x00\x00" + // total number of entries in the central directory on this disk decToHex ( zipData . length , 2 ) + // total number of entries in the central directory decToHex ( zipData . length , 2 ) + // size of the central directory   4 bytes decToHex ( centralDirLength , 4 ) + // offset of start of central directory with respect to the starting disk number decToHex ( localDirLength , 4 ) + // .ZIP file comment length "\x00\x00" ; // we have all the parts (and the total length) // time to create a writer ! var typeName = options . type . toLowerCase ( ) ; if ( typeName === "uint8array" || typeName === "arraybuffer" || typeName === "blob" || typeName === "nodebuffer" ) { writer = new Uint8ArrayWriter ( localDirLength + centralDirLength + dirEnd . length ) ; } else { writer = new StringWriter ( localDirLength + centralDirLength + dirEnd . length ) ; } for ( i = 0 ; i < zipData . length ; i ++ ) { writer . append ( zipData [ i ] . fileRecord ) ; writer . append ( zipData [ i ] . compressedObject . compressedContent ) ; } for ( i = 0 ; i < zipData . length ; i ++ ) { writer . append ( zipData [ i ] . dirRecord ) ; } writer . append ( dirEnd ) ; var zip = writer . finalize ( ) ; switch ( options . type . toLowerCase ( ) ) { // case "zip is an Uint8Array" case "uint8array" : case "arraybuffer" : case "nodebuffer" : return utils . transformTo ( options . type . toLowerCase ( ) , zip ) ; case "blob" : return utils . arrayBuffer2Blob ( utils . transformTo ( "arraybuffer" , zip ) ) ; // case "zip is a string" case "base64" : return ( options . base64 ) ? base64 . encode ( zip ) : zip ; default : // case "string" : return zip ; } }
Generate the complete zip file
@param {Object} options the options to generate the zip file :
- base64, (deprecated, use type instead) true to generate base64.
- compression, "STORE" by default.
- type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
@return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the zip file
Generate the complete zip file