index.js•2.04 kB
"use strict";
var compressions = require("../compressions");
var ZipFileWorker = require("./ZipFileWorker");
/**
* Find the compression to use.
* @param {String} fileCompression the compression defined at the file level, if any.
* @param {String} zipCompression the compression defined at the load() level.
* @return {Object} the compression object to use.
*/
var getCompression = function (fileCompression, zipCompression) {
var compressionName = fileCompression || zipCompression;
var compression = compressions[compressionName];
if (!compression) {
throw new Error(compressionName + " is not a valid compression method !");
}
return compression;
};
/**
* Create a worker to generate a zip file.
* @param {JSZip} zip the JSZip instance at the right root level.
* @param {Object} options to generate the zip file.
* @param {String} comment the comment to use.
*/
exports.generateWorker = function (zip, options, comment) {
var zipFileWorker = new ZipFileWorker(options.streamFiles, comment, options.platform, options.encodeFileName);
var entriesCount = 0;
try {
zip.forEach(function (relativePath, file) {
entriesCount++;
var compression = getCompression(file.options.compression, options.compression);
var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};
var dir = file.dir, date = file.date;
file._compressWorker(compression, compressionOptions)
.withStreamInfo("file", {
name : relativePath,
dir : dir,
date : date,
comment : file.comment || "",
unixPermissions : file.unixPermissions,
dosPermissions : file.dosPermissions
})
.pipe(zipFileWorker);
});
zipFileWorker.entriesCount = entriesCount;
} catch (e) {
zipFileWorker.error(e);
}
return zipFileWorker;
};