Implement compression in dropbox export
This commit is contained in:
Matheus Faustino
parent
406ff34f4d
commit
740f37bc76
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@ -1202,6 +1202,24 @@
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"noFileToImport": {
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"message": "You don't have a file to import."
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},
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"connectingDropbox": {
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"message": "Connecting Dropbox."
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},
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"gettingStyles": {
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"message": "Getting all styles."
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},
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"compactStyles": {
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"message": "Compacting styles."
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},
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"descompactStyles": {
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"message": "Descompating styles."
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},
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"readingStyles": {
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"message": "Reading styles."
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},
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"uploadingFile": {
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"message": "Uploading File."
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},
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"optionsBadgeNormal": {
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"message": "Background color"
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},
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@ -168,6 +168,8 @@
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<script src="js/storage-util.js" async></script>
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<script src="vendor/dropbox/dropbox-sdk.js" async></script>
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<script src="vendor/zipjs/zip.js" defer></script>
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<script src="manage/compress-text.js" defer></script>
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<script src="manage/import-export-dropbox.js" async></script>
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</head>
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35
manage/compress-text.js
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35
manage/compress-text.js
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@ -0,0 +1,35 @@
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/* global messageBox */
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'use strict';
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onDOMready().then(_ => {
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zip.workerScriptsPath = "/vendor/zipjs/";
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});
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function createZipFileFromText(filename, text) {
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return new Promise((resolve, reject) => {
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// use a BlobWriter to store the zip into a Blob object
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zip.createWriter(new zip.BlobWriter('application/zip'), writer => {
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// use a TextReader to read the String to add
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writer.add(filename, new zip.TextReader(text), function () {
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// close the zip writer
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writer.close(blob => {
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// blob contains the zip file as a Blob object
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resolve(blob);
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});
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});
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}, error => reject(error));
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});
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}
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function readZipFileFromBlob(blob) {
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return new Promise((resolve, reject) => {
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zip.createReader(new zip.BlobReader(blob), zipReader => {
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zipReader.getEntries(entries => {
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entries[0].getData(new zip.BlobWriter('text/plain'), data => {
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zipReader.close();
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resolve(data);
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});
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});
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}, error => reject(error))
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});
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}
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@ -1,14 +1,29 @@
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/* global messageBox */
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'use strict';
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const DROPBOX_API_KEY = '';
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const FILENAME = 'stylus.json';
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const FILENAME_ZIP_FILE = 'stylus.json';
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const DROPBOX_FILE = 'stylus.zip';
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const API_ERROR_STATUS_FILE_NOT_FOUND = 409;
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const HTTP_STATUS_CANCEL = 499;
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/**
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* this was the only way that worked in keeping a value from page to page with location.href (oauth return)
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* tried localStorage, but didn't work :/
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*/
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function messageProgressBar(data) {
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return messageBox({
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title: `${data.title}`,
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className: 'config-dialog',
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contents: [
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$create('p', data.text)
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],
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buttons: [{
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textContent: t('confirmClose'),
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dataset: {cmd: 'close'},
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}],
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}).then(_ => {
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document.body.style.minWidth = '';
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document.body.style.minHeight = '';
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});
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}
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function hasDropboxAccessToken() {
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return chromeLocal.getValue('dropbox_access_token');
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}
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@ -29,11 +44,13 @@ function requestDropboxAccessToken() {
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}
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function uploadFileDropbox(client, stylesText) {
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return client.filesUpload({path: '/' + FILENAME, contents: stylesText});
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return client.filesUpload({path: '/' + DROPBOX_FILE, contents: stylesText});
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}
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$('#sync-dropbox-export').onclick = () => {
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('connectingDropbox')});
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hasDropboxAccessToken().then(token => {
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if (typeof token === 'undefined') {
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return requestDropboxAccessToken();
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@ -47,31 +64,59 @@ $('#sync-dropbox-export').onclick = () => {
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accessToken: token
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});
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return client.filesDownload({path: '/' + FILENAME})
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.then(_ => {
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return client.filesDownload({path: '/' + DROPBOX_FILE})
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.then(_ => messageBox.confirm(t('overwriteFileExport')))
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.then(ok => {
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/** deletes file if user want to */
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if (!confirm(t('overwriteFileExport'))) {
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if (!ok) {
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return Promise.reject({status: HTTP_STATUS_CANCEL});
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}
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return client.filesDelete({path: '/' + FILENAME});
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return client.filesDelete({path: '/' + DROPBOX_FILE});
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})
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/** file deleted with success, get styles and create a file */
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.then(_ => API.getStyles().then(styles => JSON.stringify(styles, null, '\t')))
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.then(_ => {
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('gettingStyles') });
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return API.getStyles().then(styles => JSON.stringify(styles, null, '\t'));
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})
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/** create zip file */
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.then(stylesText => {
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('compactStyles') });
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return createZipFileFromText(FILENAME_ZIP_FILE, stylesText);
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})
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/** create file dropbox */
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.then(stylesText => uploadFileDropbox(client, stylesText))
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.then(zipedText =>{
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('uploadingFile') });
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return uploadFileDropbox(client, zipedText);
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})
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/** gives feedback to user */
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.then(_ => alert(t('exportSavedSuccess')))
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.then(_ => messageProgressBar({ title: t('bckpDropboxStyles'), text: t('exportSavedSuccess') }))
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/* handle not found cases and cancel action */
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.catch(error => {
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/* saving file first time */
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if (error.status === API_ERROR_STATUS_FILE_NOT_FOUND) {
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API.getStyles()
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.then(styles => JSON.stringify(styles, null, '\t'))
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.then(stylesText => uploadFileDropbox(client, stylesText))
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.then(_ => alert(t('exportSavedSuccess')))
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.catch(err => console.error(err));
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.then(styles => {
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('gettingStyles') });
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return JSON.stringify(styles, null, '\t');
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})
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.then(stylesText => {
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('compactStyles') });
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return createZipFileFromText(FILENAME_ZIP_FILE, stylesText);
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})
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.then(zipedText => {
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messageProgressBar({ title: t('bckpDropboxStyles'), text: t('uploadingFile') });
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return uploadFileDropbox(client, zipedText);
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})
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.then(_ => messageProgressBar({ title: t('bckpDropboxStyles'), text: t('exportSavedSuccess') }))
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.catch(err => messageBox.alert(err));
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return;
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}
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@ -88,6 +133,8 @@ $('#sync-dropbox-export').onclick = () => {
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$('#sync-dropbox-import').onclick = () => {
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messageProgressBar({ title: t('retrieveDropboxBckp'), text: t('connectingDropbox') });
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hasDropboxAccessToken().then(token => {
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if (typeof token === 'undefined') {
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return requestDropboxAccessToken();
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@ -96,15 +143,21 @@ $('#sync-dropbox-import').onclick = () => {
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return token;
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})
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.then(token => {
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const client = new Dropbox.Dropbox({
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clientId: DROPBOX_API_KEY,
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accessToken: token
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});
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return client.filesDownload({path: '/' + FILENAME})
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return client.filesDownload({path: '/' + DROPBOX_FILE})
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.then(response => {
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const fileBlob = response.fileBlob;
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messageProgressBar({ title: t('retrieveDropboxBckp'), text: t('descompactStyles') });
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return readZipFileFromBlob(response.fileBlob);
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})
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.then(zipedFileBlob => {
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messageProgressBar({ title: t('retrieveDropboxBckp'), text: t('readingStyles') });
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const fileBlob = zipedFileBlob;
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/* it's based on the import-export.js */
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const fReader = new FileReader();
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@ -127,12 +180,12 @@ $('#sync-dropbox-import').onclick = () => {
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.catch(error => {
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/* no file */
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if (error.status === API_ERROR_STATUS_FILE_NOT_FOUND) {
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alert(t('noFileToImport'));
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messageBox.alert(t('noFileToImport'));
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return;
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}
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console.error(error);
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messageBox.alert(error);
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});
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});
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};
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2060
vendor/zipjs/deflate.js
vendored
Executable file
2060
vendor/zipjs/deflate.js
vendored
Executable file
File diff suppressed because it is too large
Load Diff
2155
vendor/zipjs/inflate.js
vendored
Executable file
2155
vendor/zipjs/inflate.js
vendored
Executable file
File diff suppressed because it is too large
Load Diff
153
vendor/zipjs/z-worker.js
vendored
Executable file
153
vendor/zipjs/z-worker.js
vendored
Executable file
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@ -0,0 +1,153 @@
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/* jshint worker:true */
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(function main(global) {
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"use strict";
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if (global.zWorkerInitialized)
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throw new Error('z-worker.js should be run only once');
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global.zWorkerInitialized = true;
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addEventListener("message", function(event) {
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var message = event.data, type = message.type, sn = message.sn;
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var handler = handlers[type];
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if (handler) {
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try {
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handler(message);
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} catch (e) {
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onError(type, sn, e);
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}
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}
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//for debug
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//postMessage({type: 'echo', originalType: type, sn: sn});
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});
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var handlers = {
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importScripts: doImportScripts,
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newTask: newTask,
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append: processData,
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flush: processData,
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};
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// deflater/inflater tasks indexed by serial numbers
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var tasks = {};
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function doImportScripts(msg) {
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if (msg.scripts && msg.scripts.length > 0)
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importScripts.apply(undefined, msg.scripts);
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postMessage({type: 'importScripts'});
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}
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function newTask(msg) {
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var CodecClass = global[msg.codecClass];
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var sn = msg.sn;
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if (tasks[sn])
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throw Error('duplicated sn');
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tasks[sn] = {
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codec: new CodecClass(msg.options),
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crcInput: msg.crcType === 'input',
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crcOutput: msg.crcType === 'output',
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crc: new Crc32(),
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};
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postMessage({type: 'newTask', sn: sn});
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}
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// performance may not be supported
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var now = global.performance ? global.performance.now.bind(global.performance) : Date.now;
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function processData(msg) {
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var sn = msg.sn, type = msg.type, input = msg.data;
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var task = tasks[sn];
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// allow creating codec on first append
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if (!task && msg.codecClass) {
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newTask(msg);
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task = tasks[sn];
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}
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var isAppend = type === 'append';
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var start = now();
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var output;
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if (isAppend) {
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try {
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output = task.codec.append(input, function onprogress(loaded) {
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postMessage({type: 'progress', sn: sn, loaded: loaded});
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});
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} catch (e) {
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delete tasks[sn];
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throw e;
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}
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} else {
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delete tasks[sn];
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output = task.codec.flush();
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}
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var codecTime = now() - start;
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start = now();
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if (input && task.crcInput)
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task.crc.append(input);
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if (output && task.crcOutput)
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task.crc.append(output);
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var crcTime = now() - start;
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var rmsg = {type: type, sn: sn, codecTime: codecTime, crcTime: crcTime};
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var transferables = [];
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if (output) {
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rmsg.data = output;
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transferables.push(output.buffer);
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}
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if (!isAppend && (task.crcInput || task.crcOutput))
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rmsg.crc = task.crc.get();
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// posting a message with transferables will fail on IE10
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try {
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postMessage(rmsg, transferables);
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} catch(ex) {
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postMessage(rmsg); // retry without transferables
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}
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}
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function onError(type, sn, e) {
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var msg = {
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type: type,
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sn: sn,
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error: formatError(e)
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};
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postMessage(msg);
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}
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function formatError(e) {
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return { message: e.message, stack: e.stack };
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}
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// Crc32 code copied from file zip.js
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function Crc32() {
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this.crc = -1;
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}
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Crc32.prototype.append = function append(data) {
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var crc = this.crc | 0, table = this.table;
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for (var offset = 0, len = data.length | 0; offset < len; offset++)
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crc = (crc >>> 8) ^ table[(crc ^ data[offset]) & 0xFF];
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this.crc = crc;
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};
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Crc32.prototype.get = function get() {
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return ~this.crc;
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};
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Crc32.prototype.table = (function() {
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var i, j, t, table = []; // Uint32Array is actually slower than []
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for (i = 0; i < 256; i++) {
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t = i;
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for (j = 0; j < 8; j++)
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if (t & 1)
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t = (t >>> 1) ^ 0xEDB88320;
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else
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t = t >>> 1;
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table[i] = t;
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}
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return table;
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})();
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// "no-op" codec
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function NOOP() {}
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global.NOOP = NOOP;
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NOOP.prototype.append = function append(bytes, onprogress) {
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return bytes;
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};
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NOOP.prototype.flush = function flush() {};
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})(this);
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966
vendor/zipjs/zip.js
vendored
Executable file
966
vendor/zipjs/zip.js
vendored
Executable file
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@ -0,0 +1,966 @@
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/*
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Copyright (c) 2013 Gildas Lormeau. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright notice,
|
||||
this list of conditions and the following disclaimer.
|
||||
|
||||
2. Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the distribution.
|
||||
|
||||
3. The names of the authors may not be used to endorse or promote products
|
||||
derived from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
|
||||
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
|
||||
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
||||
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
||||
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
(function(obj) {
|
||||
"use strict";
|
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|
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var ERR_BAD_FORMAT = "File format is not recognized.";
|
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var ERR_CRC = "CRC failed.";
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var ERR_ENCRYPTED = "File contains encrypted entry.";
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var ERR_ZIP64 = "File is using Zip64 (4gb+ file size).";
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var ERR_READ = "Error while reading zip file.";
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var ERR_WRITE = "Error while writing zip file.";
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var ERR_WRITE_DATA = "Error while writing file data.";
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var ERR_READ_DATA = "Error while reading file data.";
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var ERR_DUPLICATED_NAME = "File already exists.";
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var CHUNK_SIZE = 512 * 1024;
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var TEXT_PLAIN = "text/plain";
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var appendABViewSupported;
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try {
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||||
appendABViewSupported = new Blob([ new DataView(new ArrayBuffer(0)) ]).size === 0;
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} catch (e) {
|
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}
|
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|
||||
function Crc32() {
|
||||
this.crc = -1;
|
||||
}
|
||||
Crc32.prototype.append = function append(data) {
|
||||
var crc = this.crc | 0, table = this.table;
|
||||
for (var offset = 0, len = data.length | 0; offset < len; offset++)
|
||||
crc = (crc >>> 8) ^ table[(crc ^ data[offset]) & 0xFF];
|
||||
this.crc = crc;
|
||||
};
|
||||
Crc32.prototype.get = function get() {
|
||||
return ~this.crc;
|
||||
};
|
||||
Crc32.prototype.table = (function() {
|
||||
var i, j, t, table = []; // Uint32Array is actually slower than []
|
||||
for (i = 0; i < 256; i++) {
|
||||
t = i;
|
||||
for (j = 0; j < 8; j++)
|
||||
if (t & 1)
|
||||
t = (t >>> 1) ^ 0xEDB88320;
|
||||
else
|
||||
t = t >>> 1;
|
||||
table[i] = t;
|
||||
}
|
||||
return table;
|
||||
})();
|
||||
|
||||
// "no-op" codec
|
||||
function NOOP() {}
|
||||
NOOP.prototype.append = function append(bytes, onprogress) {
|
||||
return bytes;
|
||||
};
|
||||
NOOP.prototype.flush = function flush() {};
|
||||
|
||||
function blobSlice(blob, index, length) {
|
||||
if (index < 0 || length < 0 || index + length > blob.size)
|
||||
throw new RangeError('offset:' + index + ', length:' + length + ', size:' + blob.size);
|
||||
if (blob.slice)
|
||||
return blob.slice(index, index + length);
|
||||
else if (blob.webkitSlice)
|
||||
return blob.webkitSlice(index, index + length);
|
||||
else if (blob.mozSlice)
|
||||
return blob.mozSlice(index, index + length);
|
||||
else if (blob.msSlice)
|
||||
return blob.msSlice(index, index + length);
|
||||
}
|
||||
|
||||
function getDataHelper(byteLength, bytes) {
|
||||
var dataBuffer, dataArray;
|
||||
dataBuffer = new ArrayBuffer(byteLength);
|
||||
dataArray = new Uint8Array(dataBuffer);
|
||||
if (bytes)
|
||||
dataArray.set(bytes, 0);
|
||||
return {
|
||||
buffer : dataBuffer,
|
||||
array : dataArray,
|
||||
view : new DataView(dataBuffer)
|
||||
};
|
||||
}
|
||||
|
||||
// Readers
|
||||
function Reader() {
|
||||
}
|
||||
|
||||
function TextReader(text) {
|
||||
var that = this, blobReader;
|
||||
|
||||
function init(callback, onerror) {
|
||||
var blob = new Blob([ text ], {
|
||||
type : TEXT_PLAIN
|
||||
});
|
||||
blobReader = new BlobReader(blob);
|
||||
blobReader.init(function() {
|
||||
that.size = blobReader.size;
|
||||
callback();
|
||||
}, onerror);
|
||||
}
|
||||
|
||||
function readUint8Array(index, length, callback, onerror) {
|
||||
blobReader.readUint8Array(index, length, callback, onerror);
|
||||
}
|
||||
|
||||
that.size = 0;
|
||||
that.init = init;
|
||||
that.readUint8Array = readUint8Array;
|
||||
}
|
||||
TextReader.prototype = new Reader();
|
||||
TextReader.prototype.constructor = TextReader;
|
||||
|
||||
function Data64URIReader(dataURI) {
|
||||
var that = this, dataStart;
|
||||
|
||||
function init(callback) {
|
||||
var dataEnd = dataURI.length;
|
||||
while (dataURI.charAt(dataEnd - 1) == "=")
|
||||
dataEnd--;
|
||||
dataStart = dataURI.indexOf(",") + 1;
|
||||
that.size = Math.floor((dataEnd - dataStart) * 0.75);
|
||||
callback();
|
||||
}
|
||||
|
||||
function readUint8Array(index, length, callback) {
|
||||
var i, data = getDataHelper(length);
|
||||
var start = Math.floor(index / 3) * 4;
|
||||
var end = Math.ceil((index + length) / 3) * 4;
|
||||
var bytes = obj.atob(dataURI.substring(start + dataStart, end + dataStart));
|
||||
var delta = index - Math.floor(start / 4) * 3;
|
||||
for (i = delta; i < delta + length; i++)
|
||||
data.array[i - delta] = bytes.charCodeAt(i);
|
||||
callback(data.array);
|
||||
}
|
||||
|
||||
that.size = 0;
|
||||
that.init = init;
|
||||
that.readUint8Array = readUint8Array;
|
||||
}
|
||||
Data64URIReader.prototype = new Reader();
|
||||
Data64URIReader.prototype.constructor = Data64URIReader;
|
||||
|
||||
function BlobReader(blob) {
|
||||
var that = this;
|
||||
|
||||
function init(callback) {
|
||||
that.size = blob.size;
|
||||
callback();
|
||||
}
|
||||
|
||||
function readUint8Array(index, length, callback, onerror) {
|
||||
var reader = new FileReader();
|
||||
reader.onload = function(e) {
|
||||
callback(new Uint8Array(e.target.result));
|
||||
};
|
||||
reader.onerror = onerror;
|
||||
try {
|
||||
reader.readAsArrayBuffer(blobSlice(blob, index, length));
|
||||
} catch (e) {
|
||||
onerror(e);
|
||||
}
|
||||
}
|
||||
|
||||
that.size = 0;
|
||||
that.init = init;
|
||||
that.readUint8Array = readUint8Array;
|
||||
}
|
||||
BlobReader.prototype = new Reader();
|
||||
BlobReader.prototype.constructor = BlobReader;
|
||||
|
||||
// Writers
|
||||
|
||||
function Writer() {
|
||||
}
|
||||
Writer.prototype.getData = function(callback) {
|
||||
callback(this.data);
|
||||
};
|
||||
|
||||
function TextWriter(encoding) {
|
||||
var that = this, blob;
|
||||
|
||||
function init(callback) {
|
||||
blob = new Blob([], {
|
||||
type : TEXT_PLAIN
|
||||
});
|
||||
callback();
|
||||
}
|
||||
|
||||
function writeUint8Array(array, callback) {
|
||||
blob = new Blob([ blob, appendABViewSupported ? array : array.buffer ], {
|
||||
type : TEXT_PLAIN
|
||||
});
|
||||
callback();
|
||||
}
|
||||
|
||||
function getData(callback, onerror) {
|
||||
var reader = new FileReader();
|
||||
reader.onload = function(e) {
|
||||
callback(e.target.result);
|
||||
};
|
||||
reader.onerror = onerror;
|
||||
reader.readAsText(blob, encoding);
|
||||
}
|
||||
|
||||
that.init = init;
|
||||
that.writeUint8Array = writeUint8Array;
|
||||
that.getData = getData;
|
||||
}
|
||||
TextWriter.prototype = new Writer();
|
||||
TextWriter.prototype.constructor = TextWriter;
|
||||
|
||||
function Data64URIWriter(contentType) {
|
||||
var that = this, data = "", pending = "";
|
||||
|
||||
function init(callback) {
|
||||
data += "data:" + (contentType || "") + ";base64,";
|
||||
callback();
|
||||
}
|
||||
|
||||
function writeUint8Array(array, callback) {
|
||||
var i, delta = pending.length, dataString = pending;
|
||||
pending = "";
|
||||
for (i = 0; i < (Math.floor((delta + array.length) / 3) * 3) - delta; i++)
|
||||
dataString += String.fromCharCode(array[i]);
|
||||
for (; i < array.length; i++)
|
||||
pending += String.fromCharCode(array[i]);
|
||||
if (dataString.length > 2)
|
||||
data += obj.btoa(dataString);
|
||||
else
|
||||
pending = dataString;
|
||||
callback();
|
||||
}
|
||||
|
||||
function getData(callback) {
|
||||
callback(data + obj.btoa(pending));
|
||||
}
|
||||
|
||||
that.init = init;
|
||||
that.writeUint8Array = writeUint8Array;
|
||||
that.getData = getData;
|
||||
}
|
||||
Data64URIWriter.prototype = new Writer();
|
||||
Data64URIWriter.prototype.constructor = Data64URIWriter;
|
||||
|
||||
function BlobWriter(contentType) {
|
||||
var blob, that = this;
|
||||
|
||||
function init(callback) {
|
||||
blob = new Blob([], {
|
||||
type : contentType
|
||||
});
|
||||
callback();
|
||||
}
|
||||
|
||||
function writeUint8Array(array, callback) {
|
||||
blob = new Blob([ blob, appendABViewSupported ? array : array.buffer ], {
|
||||
type : contentType
|
||||
});
|
||||
callback();
|
||||
}
|
||||
|
||||
function getData(callback) {
|
||||
callback(blob);
|
||||
}
|
||||
|
||||
that.init = init;
|
||||
that.writeUint8Array = writeUint8Array;
|
||||
that.getData = getData;
|
||||
}
|
||||
BlobWriter.prototype = new Writer();
|
||||
BlobWriter.prototype.constructor = BlobWriter;
|
||||
|
||||
/**
|
||||
* inflate/deflate core functions
|
||||
* @param worker {Worker} web worker for the task.
|
||||
* @param initialMessage {Object} initial message to be sent to the worker. should contain
|
||||
* sn(serial number for distinguishing multiple tasks sent to the worker), and codecClass.
|
||||
* This function may add more properties before sending.
|
||||
*/
|
||||
function launchWorkerProcess(worker, initialMessage, reader, writer, offset, size, onprogress, onend, onreaderror, onwriteerror) {
|
||||
var chunkIndex = 0, index, outputSize, sn = initialMessage.sn, crc;
|
||||
|
||||
function onflush() {
|
||||
worker.removeEventListener('message', onmessage, false);
|
||||
onend(outputSize, crc);
|
||||
}
|
||||
|
||||
function onmessage(event) {
|
||||
var message = event.data, data = message.data, err = message.error;
|
||||
if (err) {
|
||||
err.toString = function () { return 'Error: ' + this.message; };
|
||||
onreaderror(err);
|
||||
return;
|
||||
}
|
||||
if (message.sn !== sn)
|
||||
return;
|
||||
if (typeof message.codecTime === 'number')
|
||||
worker.codecTime += message.codecTime; // should be before onflush()
|
||||
if (typeof message.crcTime === 'number')
|
||||
worker.crcTime += message.crcTime;
|
||||
|
||||
switch (message.type) {
|
||||
case 'append':
|
||||
if (data) {
|
||||
outputSize += data.length;
|
||||
writer.writeUint8Array(data, function() {
|
||||
step();
|
||||
}, onwriteerror);
|
||||
} else
|
||||
step();
|
||||
break;
|
||||
case 'flush':
|
||||
crc = message.crc;
|
||||
if (data) {
|
||||
outputSize += data.length;
|
||||
writer.writeUint8Array(data, function() {
|
||||
onflush();
|
||||
}, onwriteerror);
|
||||
} else
|
||||
onflush();
|
||||
break;
|
||||
case 'progress':
|
||||
if (onprogress)
|
||||
onprogress(index + message.loaded, size);
|
||||
break;
|
||||
case 'importScripts': //no need to handle here
|
||||
case 'newTask':
|
||||
case 'echo':
|
||||
break;
|
||||
default:
|
||||
console.warn('zip.js:launchWorkerProcess: unknown message: ', message);
|
||||
}
|
||||
}
|
||||
|
||||
function step() {
|
||||
index = chunkIndex * CHUNK_SIZE;
|
||||
// use `<=` instead of `<`, because `size` may be 0.
|
||||
if (index <= size) {
|
||||
reader.readUint8Array(offset + index, Math.min(CHUNK_SIZE, size - index), function(array) {
|
||||
if (onprogress)
|
||||
onprogress(index, size);
|
||||
var msg = index === 0 ? initialMessage : {sn : sn};
|
||||
msg.type = 'append';
|
||||
msg.data = array;
|
||||
|
||||
// posting a message with transferables will fail on IE10
|
||||
try {
|
||||
worker.postMessage(msg, [array.buffer]);
|
||||
} catch(ex) {
|
||||
worker.postMessage(msg); // retry without transferables
|
||||
}
|
||||
chunkIndex++;
|
||||
}, onreaderror);
|
||||
} else {
|
||||
worker.postMessage({
|
||||
sn: sn,
|
||||
type: 'flush'
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
outputSize = 0;
|
||||
worker.addEventListener('message', onmessage, false);
|
||||
step();
|
||||
}
|
||||
|
||||
function launchProcess(process, reader, writer, offset, size, crcType, onprogress, onend, onreaderror, onwriteerror) {
|
||||
var chunkIndex = 0, index, outputSize = 0,
|
||||
crcInput = crcType === 'input',
|
||||
crcOutput = crcType === 'output',
|
||||
crc = new Crc32();
|
||||
function step() {
|
||||
var outputData;
|
||||
index = chunkIndex * CHUNK_SIZE;
|
||||
if (index < size)
|
||||
reader.readUint8Array(offset + index, Math.min(CHUNK_SIZE, size - index), function(inputData) {
|
||||
var outputData;
|
||||
try {
|
||||
outputData = process.append(inputData, function(loaded) {
|
||||
if (onprogress)
|
||||
onprogress(index + loaded, size);
|
||||
});
|
||||
} catch (e) {
|
||||
onreaderror(e);
|
||||
return;
|
||||
}
|
||||
if (outputData) {
|
||||
outputSize += outputData.length;
|
||||
writer.writeUint8Array(outputData, function() {
|
||||
chunkIndex++;
|
||||
setTimeout(step, 1);
|
||||
}, onwriteerror);
|
||||
if (crcOutput)
|
||||
crc.append(outputData);
|
||||
} else {
|
||||
chunkIndex++;
|
||||
setTimeout(step, 1);
|
||||
}
|
||||
if (crcInput)
|
||||
crc.append(inputData);
|
||||
if (onprogress)
|
||||
onprogress(index, size);
|
||||
}, onreaderror);
|
||||
else {
|
||||
try {
|
||||
outputData = process.flush();
|
||||
} catch (e) {
|
||||
onreaderror(e);
|
||||
return;
|
||||
}
|
||||
if (outputData) {
|
||||
if (crcOutput)
|
||||
crc.append(outputData);
|
||||
outputSize += outputData.length;
|
||||
writer.writeUint8Array(outputData, function() {
|
||||
onend(outputSize, crc.get());
|
||||
}, onwriteerror);
|
||||
} else
|
||||
onend(outputSize, crc.get());
|
||||
}
|
||||
}
|
||||
|
||||
step();
|
||||
}
|
||||
|
||||
function inflate(worker, sn, reader, writer, offset, size, computeCrc32, onend, onprogress, onreaderror, onwriteerror) {
|
||||
var crcType = computeCrc32 ? 'output' : 'none';
|
||||
if (obj.zip.useWebWorkers) {
|
||||
var initialMessage = {
|
||||
sn: sn,
|
||||
codecClass: 'Inflater',
|
||||
crcType: crcType,
|
||||
};
|
||||
launchWorkerProcess(worker, initialMessage, reader, writer, offset, size, onprogress, onend, onreaderror, onwriteerror);
|
||||
} else
|
||||
launchProcess(new obj.zip.Inflater(), reader, writer, offset, size, crcType, onprogress, onend, onreaderror, onwriteerror);
|
||||
}
|
||||
|
||||
function deflate(worker, sn, reader, writer, level, onend, onprogress, onreaderror, onwriteerror) {
|
||||
var crcType = 'input';
|
||||
if (obj.zip.useWebWorkers) {
|
||||
var initialMessage = {
|
||||
sn: sn,
|
||||
options: {level: level},
|
||||
codecClass: 'Deflater',
|
||||
crcType: crcType,
|
||||
};
|
||||
launchWorkerProcess(worker, initialMessage, reader, writer, 0, reader.size, onprogress, onend, onreaderror, onwriteerror);
|
||||
} else
|
||||
launchProcess(new obj.zip.Deflater(), reader, writer, 0, reader.size, crcType, onprogress, onend, onreaderror, onwriteerror);
|
||||
}
|
||||
|
||||
function copy(worker, sn, reader, writer, offset, size, computeCrc32, onend, onprogress, onreaderror, onwriteerror) {
|
||||
var crcType = 'input';
|
||||
if (obj.zip.useWebWorkers && computeCrc32) {
|
||||
var initialMessage = {
|
||||
sn: sn,
|
||||
codecClass: 'NOOP',
|
||||
crcType: crcType,
|
||||
};
|
||||
launchWorkerProcess(worker, initialMessage, reader, writer, offset, size, onprogress, onend, onreaderror, onwriteerror);
|
||||
} else
|
||||
launchProcess(new NOOP(), reader, writer, offset, size, crcType, onprogress, onend, onreaderror, onwriteerror);
|
||||
}
|
||||
|
||||
// ZipReader
|
||||
|
||||
function decodeASCII(str) {
|
||||
var i, out = "", charCode, extendedASCII = [ '\u00C7', '\u00FC', '\u00E9', '\u00E2', '\u00E4', '\u00E0', '\u00E5', '\u00E7', '\u00EA', '\u00EB',
|
||||
'\u00E8', '\u00EF', '\u00EE', '\u00EC', '\u00C4', '\u00C5', '\u00C9', '\u00E6', '\u00C6', '\u00F4', '\u00F6', '\u00F2', '\u00FB', '\u00F9',
|
||||
'\u00FF', '\u00D6', '\u00DC', '\u00F8', '\u00A3', '\u00D8', '\u00D7', '\u0192', '\u00E1', '\u00ED', '\u00F3', '\u00FA', '\u00F1', '\u00D1',
|
||||
'\u00AA', '\u00BA', '\u00BF', '\u00AE', '\u00AC', '\u00BD', '\u00BC', '\u00A1', '\u00AB', '\u00BB', '_', '_', '_', '\u00A6', '\u00A6',
|
||||
'\u00C1', '\u00C2', '\u00C0', '\u00A9', '\u00A6', '\u00A6', '+', '+', '\u00A2', '\u00A5', '+', '+', '-', '-', '+', '-', '+', '\u00E3',
|
||||
'\u00C3', '+', '+', '-', '-', '\u00A6', '-', '+', '\u00A4', '\u00F0', '\u00D0', '\u00CA', '\u00CB', '\u00C8', 'i', '\u00CD', '\u00CE',
|
||||
'\u00CF', '+', '+', '_', '_', '\u00A6', '\u00CC', '_', '\u00D3', '\u00DF', '\u00D4', '\u00D2', '\u00F5', '\u00D5', '\u00B5', '\u00FE',
|
||||
'\u00DE', '\u00DA', '\u00DB', '\u00D9', '\u00FD', '\u00DD', '\u00AF', '\u00B4', '\u00AD', '\u00B1', '_', '\u00BE', '\u00B6', '\u00A7',
|
||||
'\u00F7', '\u00B8', '\u00B0', '\u00A8', '\u00B7', '\u00B9', '\u00B3', '\u00B2', '_', ' ' ];
|
||||
for (i = 0; i < str.length; i++) {
|
||||
charCode = str.charCodeAt(i) & 0xFF;
|
||||
if (charCode > 127)
|
||||
out += extendedASCII[charCode - 128];
|
||||
else
|
||||
out += String.fromCharCode(charCode);
|
||||
}
|
||||
return out;
|
||||
}
|
||||
|
||||
function decodeUTF8(string) {
|
||||
return decodeURIComponent(escape(string));
|
||||
}
|
||||
|
||||
function getString(bytes) {
|
||||
var i, str = "";
|
||||
for (i = 0; i < bytes.length; i++)
|
||||
str += String.fromCharCode(bytes[i]);
|
||||
return str;
|
||||
}
|
||||
|
||||
function getDate(timeRaw) {
|
||||
var date = (timeRaw & 0xffff0000) >> 16, time = timeRaw & 0x0000ffff;
|
||||
try {
|
||||
return new Date(1980 + ((date & 0xFE00) >> 9), ((date & 0x01E0) >> 5) - 1, date & 0x001F, (time & 0xF800) >> 11, (time & 0x07E0) >> 5,
|
||||
(time & 0x001F) * 2, 0);
|
||||
} catch (e) {
|
||||
}
|
||||
}
|
||||
|
||||
function readCommonHeader(entry, data, index, centralDirectory, onerror) {
|
||||
entry.version = data.view.getUint16(index, true);
|
||||
entry.bitFlag = data.view.getUint16(index + 2, true);
|
||||
entry.compressionMethod = data.view.getUint16(index + 4, true);
|
||||
entry.lastModDateRaw = data.view.getUint32(index + 6, true);
|
||||
entry.lastModDate = getDate(entry.lastModDateRaw);
|
||||
if ((entry.bitFlag & 0x01) === 0x01) {
|
||||
onerror(ERR_ENCRYPTED);
|
||||
return;
|
||||
}
|
||||
if (centralDirectory || (entry.bitFlag & 0x0008) != 0x0008) {
|
||||
entry.crc32 = data.view.getUint32(index + 10, true);
|
||||
entry.compressedSize = data.view.getUint32(index + 14, true);
|
||||
entry.uncompressedSize = data.view.getUint32(index + 18, true);
|
||||
}
|
||||
if (entry.compressedSize === 0xFFFFFFFF || entry.uncompressedSize === 0xFFFFFFFF) {
|
||||
onerror(ERR_ZIP64);
|
||||
return;
|
||||
}
|
||||
entry.filenameLength = data.view.getUint16(index + 22, true);
|
||||
entry.extraFieldLength = data.view.getUint16(index + 24, true);
|
||||
}
|
||||
|
||||
function createZipReader(reader, callback, onerror) {
|
||||
var inflateSN = 0;
|
||||
|
||||
function Entry() {
|
||||
}
|
||||
|
||||
Entry.prototype.getData = function(writer, onend, onprogress, checkCrc32) {
|
||||
var that = this;
|
||||
|
||||
function testCrc32(crc32) {
|
||||
var dataCrc32 = getDataHelper(4);
|
||||
dataCrc32.view.setUint32(0, crc32);
|
||||
return that.crc32 == dataCrc32.view.getUint32(0);
|
||||
}
|
||||
|
||||
function getWriterData(uncompressedSize, crc32) {
|
||||
if (checkCrc32 && !testCrc32(crc32))
|
||||
onerror(ERR_CRC);
|
||||
else
|
||||
writer.getData(function(data) {
|
||||
onend(data);
|
||||
});
|
||||
}
|
||||
|
||||
function onreaderror(err) {
|
||||
onerror(err || ERR_READ_DATA);
|
||||
}
|
||||
|
||||
function onwriteerror(err) {
|
||||
onerror(err || ERR_WRITE_DATA);
|
||||
}
|
||||
|
||||
reader.readUint8Array(that.offset, 30, function(bytes) {
|
||||
var data = getDataHelper(bytes.length, bytes), dataOffset;
|
||||
if (data.view.getUint32(0) != 0x504b0304) {
|
||||
onerror(ERR_BAD_FORMAT);
|
||||
return;
|
||||
}
|
||||
readCommonHeader(that, data, 4, false, onerror);
|
||||
dataOffset = that.offset + 30 + that.filenameLength + that.extraFieldLength;
|
||||
writer.init(function() {
|
||||
if (that.compressionMethod === 0)
|
||||
copy(that._worker, inflateSN++, reader, writer, dataOffset, that.compressedSize, checkCrc32, getWriterData, onprogress, onreaderror, onwriteerror);
|
||||
else
|
||||
inflate(that._worker, inflateSN++, reader, writer, dataOffset, that.compressedSize, checkCrc32, getWriterData, onprogress, onreaderror, onwriteerror);
|
||||
}, onwriteerror);
|
||||
}, onreaderror);
|
||||
};
|
||||
|
||||
function seekEOCDR(eocdrCallback) {
|
||||
// "End of central directory record" is the last part of a zip archive, and is at least 22 bytes long.
|
||||
// Zip file comment is the last part of EOCDR and has max length of 64KB,
|
||||
// so we only have to search the last 64K + 22 bytes of a archive for EOCDR signature (0x06054b50).
|
||||
var EOCDR_MIN = 22;
|
||||
if (reader.size < EOCDR_MIN) {
|
||||
onerror(ERR_BAD_FORMAT);
|
||||
return;
|
||||
}
|
||||
var ZIP_COMMENT_MAX = 256 * 256, EOCDR_MAX = EOCDR_MIN + ZIP_COMMENT_MAX;
|
||||
|
||||
// In most cases, the EOCDR is EOCDR_MIN bytes long
|
||||
doSeek(EOCDR_MIN, function() {
|
||||
// If not found, try within EOCDR_MAX bytes
|
||||
doSeek(Math.min(EOCDR_MAX, reader.size), function() {
|
||||
onerror(ERR_BAD_FORMAT);
|
||||
});
|
||||
});
|
||||
|
||||
// seek last length bytes of file for EOCDR
|
||||
function doSeek(length, eocdrNotFoundCallback) {
|
||||
reader.readUint8Array(reader.size - length, length, function(bytes) {
|
||||
for (var i = bytes.length - EOCDR_MIN; i >= 0; i--) {
|
||||
if (bytes[i] === 0x50 && bytes[i + 1] === 0x4b && bytes[i + 2] === 0x05 && bytes[i + 3] === 0x06) {
|
||||
eocdrCallback(new DataView(bytes.buffer, i, EOCDR_MIN));
|
||||
return;
|
||||
}
|
||||
}
|
||||
eocdrNotFoundCallback();
|
||||
}, function() {
|
||||
onerror(ERR_READ);
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
var zipReader = {
|
||||
getEntries : function(callback) {
|
||||
var worker = this._worker;
|
||||
// look for End of central directory record
|
||||
seekEOCDR(function(dataView) {
|
||||
var datalength, fileslength;
|
||||
datalength = dataView.getUint32(16, true);
|
||||
fileslength = dataView.getUint16(8, true);
|
||||
if (datalength < 0 || datalength >= reader.size) {
|
||||
onerror(ERR_BAD_FORMAT);
|
||||
return;
|
||||
}
|
||||
reader.readUint8Array(datalength, reader.size - datalength, function(bytes) {
|
||||
var i, index = 0, entries = [], entry, filename, comment, data = getDataHelper(bytes.length, bytes);
|
||||
for (i = 0; i < fileslength; i++) {
|
||||
entry = new Entry();
|
||||
entry._worker = worker;
|
||||
if (data.view.getUint32(index) != 0x504b0102) {
|
||||
onerror(ERR_BAD_FORMAT);
|
||||
return;
|
||||
}
|
||||
readCommonHeader(entry, data, index + 6, true, onerror);
|
||||
entry.commentLength = data.view.getUint16(index + 32, true);
|
||||
entry.directory = ((data.view.getUint8(index + 38) & 0x10) == 0x10);
|
||||
entry.offset = data.view.getUint32(index + 42, true);
|
||||
filename = getString(data.array.subarray(index + 46, index + 46 + entry.filenameLength));
|
||||
entry.filename = ((entry.bitFlag & 0x0800) === 0x0800) ? decodeUTF8(filename) : decodeASCII(filename);
|
||||
if (!entry.directory && entry.filename.charAt(entry.filename.length - 1) == "/")
|
||||
entry.directory = true;
|
||||
comment = getString(data.array.subarray(index + 46 + entry.filenameLength + entry.extraFieldLength, index + 46
|
||||
+ entry.filenameLength + entry.extraFieldLength + entry.commentLength));
|
||||
entry.comment = ((entry.bitFlag & 0x0800) === 0x0800) ? decodeUTF8(comment) : decodeASCII(comment);
|
||||
entries.push(entry);
|
||||
index += 46 + entry.filenameLength + entry.extraFieldLength + entry.commentLength;
|
||||
}
|
||||
callback(entries);
|
||||
}, function() {
|
||||
onerror(ERR_READ);
|
||||
});
|
||||
});
|
||||
},
|
||||
close : function(callback) {
|
||||
if (this._worker) {
|
||||
this._worker.terminate();
|
||||
this._worker = null;
|
||||
}
|
||||
if (callback)
|
||||
callback();
|
||||
},
|
||||
_worker: null
|
||||
};
|
||||
|
||||
if (!obj.zip.useWebWorkers)
|
||||
callback(zipReader);
|
||||
else {
|
||||
createWorker('inflater',
|
||||
function(worker) {
|
||||
zipReader._worker = worker;
|
||||
callback(zipReader);
|
||||
},
|
||||
function(err) {
|
||||
onerror(err);
|
||||
}
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// ZipWriter
|
||||
|
||||
function encodeUTF8(string) {
|
||||
return unescape(encodeURIComponent(string));
|
||||
}
|
||||
|
||||
function getBytes(str) {
|
||||
var i, array = [];
|
||||
for (i = 0; i < str.length; i++)
|
||||
array.push(str.charCodeAt(i));
|
||||
return array;
|
||||
}
|
||||
|
||||
function createZipWriter(writer, callback, onerror, dontDeflate) {
|
||||
var files = {}, filenames = [], datalength = 0;
|
||||
var deflateSN = 0;
|
||||
|
||||
function onwriteerror(err) {
|
||||
onerror(err || ERR_WRITE);
|
||||
}
|
||||
|
||||
function onreaderror(err) {
|
||||
onerror(err || ERR_READ_DATA);
|
||||
}
|
||||
|
||||
var zipWriter = {
|
||||
add : function(name, reader, onend, onprogress, options) {
|
||||
var header, filename, date;
|
||||
var worker = this._worker;
|
||||
|
||||
function writeHeader(callback) {
|
||||
var data;
|
||||
date = options.lastModDate || new Date();
|
||||
header = getDataHelper(26);
|
||||
files[name] = {
|
||||
headerArray : header.array,
|
||||
directory : options.directory,
|
||||
filename : filename,
|
||||
offset : datalength,
|
||||
comment : getBytes(encodeUTF8(options.comment || ""))
|
||||
};
|
||||
header.view.setUint32(0, 0x14000808);
|
||||
if (options.version)
|
||||
header.view.setUint8(0, options.version);
|
||||
if (!dontDeflate && options.level !== 0 && !options.directory)
|
||||
header.view.setUint16(4, 0x0800);
|
||||
header.view.setUint16(6, (((date.getHours() << 6) | date.getMinutes()) << 5) | date.getSeconds() / 2, true);
|
||||
header.view.setUint16(8, ((((date.getFullYear() - 1980) << 4) | (date.getMonth() + 1)) << 5) | date.getDate(), true);
|
||||
header.view.setUint16(22, filename.length, true);
|
||||
data = getDataHelper(30 + filename.length);
|
||||
data.view.setUint32(0, 0x504b0304);
|
||||
data.array.set(header.array, 4);
|
||||
data.array.set(filename, 30);
|
||||
datalength += data.array.length;
|
||||
writer.writeUint8Array(data.array, callback, onwriteerror);
|
||||
}
|
||||
|
||||
function writeFooter(compressedLength, crc32) {
|
||||
var footer = getDataHelper(16);
|
||||
datalength += compressedLength || 0;
|
||||
footer.view.setUint32(0, 0x504b0708);
|
||||
if (typeof crc32 != "undefined") {
|
||||
header.view.setUint32(10, crc32, true);
|
||||
footer.view.setUint32(4, crc32, true);
|
||||
}
|
||||
if (reader) {
|
||||
footer.view.setUint32(8, compressedLength, true);
|
||||
header.view.setUint32(14, compressedLength, true);
|
||||
footer.view.setUint32(12, reader.size, true);
|
||||
header.view.setUint32(18, reader.size, true);
|
||||
}
|
||||
writer.writeUint8Array(footer.array, function() {
|
||||
datalength += 16;
|
||||
onend();
|
||||
}, onwriteerror);
|
||||
}
|
||||
|
||||
function writeFile() {
|
||||
options = options || {};
|
||||
name = name.trim();
|
||||
if (options.directory && name.charAt(name.length - 1) != "/")
|
||||
name += "/";
|
||||
if (files.hasOwnProperty(name)) {
|
||||
onerror(ERR_DUPLICATED_NAME);
|
||||
return;
|
||||
}
|
||||
filename = getBytes(encodeUTF8(name));
|
||||
filenames.push(name);
|
||||
writeHeader(function() {
|
||||
if (reader)
|
||||
if (dontDeflate || options.level === 0)
|
||||
copy(worker, deflateSN++, reader, writer, 0, reader.size, true, writeFooter, onprogress, onreaderror, onwriteerror);
|
||||
else
|
||||
deflate(worker, deflateSN++, reader, writer, options.level, writeFooter, onprogress, onreaderror, onwriteerror);
|
||||
else
|
||||
writeFooter();
|
||||
}, onwriteerror);
|
||||
}
|
||||
|
||||
if (reader)
|
||||
reader.init(writeFile, onreaderror);
|
||||
else
|
||||
writeFile();
|
||||
},
|
||||
close : function(callback) {
|
||||
if (this._worker) {
|
||||
this._worker.terminate();
|
||||
this._worker = null;
|
||||
}
|
||||
|
||||
var data, length = 0, index = 0, indexFilename, file;
|
||||
for (indexFilename = 0; indexFilename < filenames.length; indexFilename++) {
|
||||
file = files[filenames[indexFilename]];
|
||||
length += 46 + file.filename.length + file.comment.length;
|
||||
}
|
||||
data = getDataHelper(length + 22);
|
||||
for (indexFilename = 0; indexFilename < filenames.length; indexFilename++) {
|
||||
file = files[filenames[indexFilename]];
|
||||
data.view.setUint32(index, 0x504b0102);
|
||||
data.view.setUint16(index + 4, 0x1400);
|
||||
data.array.set(file.headerArray, index + 6);
|
||||
data.view.setUint16(index + 32, file.comment.length, true);
|
||||
if (file.directory)
|
||||
data.view.setUint8(index + 38, 0x10);
|
||||
data.view.setUint32(index + 42, file.offset, true);
|
||||
data.array.set(file.filename, index + 46);
|
||||
data.array.set(file.comment, index + 46 + file.filename.length);
|
||||
index += 46 + file.filename.length + file.comment.length;
|
||||
}
|
||||
data.view.setUint32(index, 0x504b0506);
|
||||
data.view.setUint16(index + 8, filenames.length, true);
|
||||
data.view.setUint16(index + 10, filenames.length, true);
|
||||
data.view.setUint32(index + 12, length, true);
|
||||
data.view.setUint32(index + 16, datalength, true);
|
||||
writer.writeUint8Array(data.array, function() {
|
||||
writer.getData(callback);
|
||||
}, onwriteerror);
|
||||
},
|
||||
_worker: null
|
||||
};
|
||||
|
||||
if (!obj.zip.useWebWorkers)
|
||||
callback(zipWriter);
|
||||
else {
|
||||
createWorker('deflater',
|
||||
function(worker) {
|
||||
zipWriter._worker = worker;
|
||||
callback(zipWriter);
|
||||
},
|
||||
function(err) {
|
||||
onerror(err);
|
||||
}
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
function resolveURLs(urls) {
|
||||
var a = document.createElement('a');
|
||||
return urls.map(function(url) {
|
||||
a.href = url;
|
||||
return a.href;
|
||||
});
|
||||
}
|
||||
|
||||
var DEFAULT_WORKER_SCRIPTS = {
|
||||
deflater: ['z-worker.js', 'deflate.js'],
|
||||
inflater: ['z-worker.js', 'inflate.js']
|
||||
};
|
||||
function createWorker(type, callback, onerror) {
|
||||
if (obj.zip.workerScripts !== null && obj.zip.workerScriptsPath !== null) {
|
||||
onerror(new Error('Either zip.workerScripts or zip.workerScriptsPath may be set, not both.'));
|
||||
return;
|
||||
}
|
||||
var scripts;
|
||||
if (obj.zip.workerScripts) {
|
||||
scripts = obj.zip.workerScripts[type];
|
||||
if (!Array.isArray(scripts)) {
|
||||
onerror(new Error('zip.workerScripts.' + type + ' is not an array!'));
|
||||
return;
|
||||
}
|
||||
scripts = resolveURLs(scripts);
|
||||
} else {
|
||||
scripts = DEFAULT_WORKER_SCRIPTS[type].slice(0);
|
||||
scripts[0] = (obj.zip.workerScriptsPath || '') + scripts[0];
|
||||
}
|
||||
var worker = new Worker(scripts[0]);
|
||||
// record total consumed time by inflater/deflater/crc32 in this worker
|
||||
worker.codecTime = worker.crcTime = 0;
|
||||
worker.postMessage({ type: 'importScripts', scripts: scripts.slice(1) });
|
||||
worker.addEventListener('message', onmessage);
|
||||
function onmessage(ev) {
|
||||
var msg = ev.data;
|
||||
if (msg.error) {
|
||||
worker.terminate(); // should before onerror(), because onerror() may throw.
|
||||
onerror(msg.error);
|
||||
return;
|
||||
}
|
||||
if (msg.type === 'importScripts') {
|
||||
worker.removeEventListener('message', onmessage);
|
||||
worker.removeEventListener('error', errorHandler);
|
||||
callback(worker);
|
||||
}
|
||||
}
|
||||
// catch entry script loading error and other unhandled errors
|
||||
worker.addEventListener('error', errorHandler);
|
||||
function errorHandler(err) {
|
||||
worker.terminate();
|
||||
onerror(err);
|
||||
}
|
||||
}
|
||||
|
||||
function onerror_default(error) {
|
||||
console.error(error);
|
||||
}
|
||||
obj.zip = {
|
||||
Reader : Reader,
|
||||
Writer : Writer,
|
||||
BlobReader : BlobReader,
|
||||
Data64URIReader : Data64URIReader,
|
||||
TextReader : TextReader,
|
||||
BlobWriter : BlobWriter,
|
||||
Data64URIWriter : Data64URIWriter,
|
||||
TextWriter : TextWriter,
|
||||
createReader : function(reader, callback, onerror) {
|
||||
onerror = onerror || onerror_default;
|
||||
|
||||
reader.init(function() {
|
||||
createZipReader(reader, callback, onerror);
|
||||
}, onerror);
|
||||
},
|
||||
createWriter : function(writer, callback, onerror, dontDeflate) {
|
||||
onerror = onerror || onerror_default;
|
||||
dontDeflate = !!dontDeflate;
|
||||
|
||||
writer.init(function() {
|
||||
createZipWriter(writer, callback, onerror, dontDeflate);
|
||||
}, onerror);
|
||||
},
|
||||
useWebWorkers : true,
|
||||
/**
|
||||
* Directory containing the default worker scripts (z-worker.js, deflate.js, and inflate.js), relative to current base url.
|
||||
* E.g.: zip.workerScripts = './';
|
||||
*/
|
||||
workerScriptsPath : null,
|
||||
/**
|
||||
* Advanced option to control which scripts are loaded in the Web worker. If this option is specified, then workerScriptsPath must not be set.
|
||||
* workerScripts.deflater/workerScripts.inflater should be arrays of urls to scripts for deflater/inflater, respectively.
|
||||
* Scripts in the array are executed in order, and the first one should be z-worker.js, which is used to start the worker.
|
||||
* All urls are relative to current base url.
|
||||
* E.g.:
|
||||
* zip.workerScripts = {
|
||||
* deflater: ['z-worker.js', 'deflate.js'],
|
||||
* inflater: ['z-worker.js', 'inflate.js']
|
||||
* };
|
||||
*/
|
||||
workerScripts : null,
|
||||
};
|
||||
|
||||
})(this);
|
||||
Loading…
Reference in New Issue
Block a user