722 lines
19 KiB
JavaScript
722 lines
19 KiB
JavaScript
/*
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***** BEGIN LICENSE BLOCK *****
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Copyright © 2009 Center for History and New Media
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George Mason University, Fairfax, Virginia, USA
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http://zotero.org
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This file is part of Zotero.
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Zotero is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Zotero is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with Zotero. If not, see <http://www.gnu.org/licenses/>.
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Utilities based in part on code taken from Piggy Bank 2.1.1 (BSD-licensed)
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***** END LICENSE BLOCK *****
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*/
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/**
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* @class Utility functions not made available to translators
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*/
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Zotero.Utilities.Internal = {
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/**
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* Unicode normalization
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*/
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"copyTextToClipboard":function(str) {
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Components.classes["@mozilla.org/widget/clipboardhelper;1"]
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.getService(Components.interfaces.nsIClipboardHelper)
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.copyString(str);
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},
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/*
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* Adapted from http://developer.mozilla.org/en/docs/nsICryptoHash
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*
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* @param {String|nsIFile} strOrFile
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* @param {Boolean} [base64=false] Return as base-64-encoded string rather than hex string
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* @return {String}
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*/
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"md5":function(strOrFile, base64) {
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if (typeof strOrFile == 'string') {
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var converter = Components.classes["@mozilla.org/intl/scriptableunicodeconverter"].
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createInstance(Components.interfaces.nsIScriptableUnicodeConverter);
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converter.charset = "UTF-8";
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var result = {};
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var data = converter.convertToByteArray(strOrFile, result);
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var ch = Components.classes["@mozilla.org/security/hash;1"]
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.createInstance(Components.interfaces.nsICryptoHash);
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ch.init(ch.MD5);
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ch.update(data, data.length);
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}
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else if (strOrFile instanceof Components.interfaces.nsIFile) {
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// Otherwise throws (NS_ERROR_NOT_AVAILABLE) [nsICryptoHash.updateFromStream]
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if (!strOrFile.fileSize) {
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// MD5 for empty string
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return "d41d8cd98f00b204e9800998ecf8427e";
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}
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var istream = Components.classes["@mozilla.org/network/file-input-stream;1"]
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.createInstance(Components.interfaces.nsIFileInputStream);
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// open for reading
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istream.init(strOrFile, 0x01, 0444, 0);
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var ch = Components.classes["@mozilla.org/security/hash;1"]
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.createInstance(Components.interfaces.nsICryptoHash);
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// we want to use the MD5 algorithm
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ch.init(ch.MD5);
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// this tells updateFromStream to read the entire file
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const PR_UINT32_MAX = 0xffffffff;
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ch.updateFromStream(istream, PR_UINT32_MAX);
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}
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// pass false here to get binary data back
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var hash = ch.finish(base64);
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if (istream) {
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istream.close();
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}
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if (base64) {
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return hash;
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}
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// return the two-digit hexadecimal code for a byte
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function toHexString(charCode) {
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return ("0" + charCode.toString(16)).slice(-2);
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}
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// convert the binary hash data to a hex string.
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var hexStr;
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for (let i = 0; i < hash.length; i++) {
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hexStr += toHexString(hash.charCodeAt(i));
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}
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return hexStr;
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},
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/**
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* @param {OS.File|nsIFile|String} file File or file path
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* @param {Boolean} [base64=FALSE] Return as base-64-encoded string
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* rather than hex string
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*/
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"md5Async": function (file, base64) {
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Components.utils.import("resource://gre/modules/osfile.jsm");
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const CHUNK_SIZE = 16384;
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var deferred = Q.defer();
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function toHexString(charCode) {
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return ("0" + charCode.toString(16)).slice(-2);
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}
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var ch = Components.classes["@mozilla.org/security/hash;1"]
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.createInstance(Components.interfaces.nsICryptoHash);
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ch.init(ch.MD5);
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// Recursively read chunks of the file, and resolve the promise
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// with the hash when done
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let readChunk = function readChunk(file) {
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file.read(CHUNK_SIZE)
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.then(
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function readSuccess(data) {
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ch.update(data, data.length);
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if (data.length == CHUNK_SIZE) {
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readChunk(file);
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}
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else {
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let hash = ch.finish(base64);
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// Base64
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if (base64) {
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deferred.resolve(hash);
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}
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// Hex string
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else {
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let hexStr;
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for (let i = 0; i < hash.length; i++) {
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hexStr += toHexString(hash.charCodeAt(i));
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}
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deferred.resolve(hexStr);
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}
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}
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},
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function (e) {
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try {
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ch.finish(false);
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}
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catch (e) {}
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deferred.reject(e);
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}
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)
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.then(
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null,
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function (e) {
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try {
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ch.finish(false);
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}
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catch (e) {}
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deferred.reject(e);
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}
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);
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}
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if (file instanceof OS.File) {
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readChunk(file);
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}
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else {
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if (file instanceof Components.interfaces.nsIFile) {
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var path = file.path;
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}
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else {
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var path = file;
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}
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OS.File.open(path)
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.then(
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function opened(file) {
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readChunk(file);
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},
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function (e) {
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deferred.reject(e);
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}
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);
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}
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return deferred.promise;
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},
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/**
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* Unicode normalization
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*/
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"normalize":function(str) {
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var normalizer = Components.classes["@mozilla.org/intl/unicodenormalizer;1"]
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.getService(Components.interfaces.nsIUnicodeNormalizer);
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var obj = {};
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str = normalizer.NormalizeUnicodeNFC(str, obj);
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return obj.value;
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},
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/**
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* Return the byte length of a UTF-8 string
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*
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* http://stackoverflow.com/a/23329386
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*/
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byteLength: function (str) {
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var s = str.length;
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for (var i=str.length-1; i>=0; i--) {
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var code = str.charCodeAt(i);
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if (code > 0x7f && code <= 0x7ff) s++;
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else if (code > 0x7ff && code <= 0xffff) s+=2;
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if (code >= 0xDC00 && code <= 0xDFFF) i--; //trail surrogate
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}
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return s;
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},
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/**
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* Display a prompt from an error with custom buttons and a callback
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*/
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"errorPrompt":function(title, e) {
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var ps = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
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.getService(Components.interfaces.nsIPromptService);
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var message, buttonText, buttonCallback;
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if (e.data) {
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if (e.data.dialogText) {
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message = e.data.dialogText;
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}
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if (typeof e.data.dialogButtonText != 'undefined') {
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buttonText = e.data.dialogButtonText;
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buttonCallback = e.data.dialogButtonCallback;
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}
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}
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if (!message) {
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if (e.message) {
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message = e.message;
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}
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else {
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message = e;
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}
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}
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if (typeof buttonText == 'undefined') {
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buttonText = Zotero.getString('errorReport.reportError');
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buttonCallback = function () {
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win.ZoteroPane.reportErrors();
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}
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}
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// If secondary button is explicitly null, just use an alert
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else if (buttonText === null) {
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ps.alert(null, title, message);
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return;
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}
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var buttonFlags = ps.BUTTON_POS_0 * ps.BUTTON_TITLE_OK
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+ ps.BUTTON_POS_1 * ps.BUTTON_TITLE_IS_STRING;
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var index = ps.confirmEx(
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null,
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title,
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message,
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buttonFlags,
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"",
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buttonText,
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"", null, {}
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);
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if (index == 1) {
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setTimeout(function () { buttonCallback(); }, 1);
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}
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},
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/**
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* saveURI wrapper function
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* @param {nsIWebBrowserPersist} nsIWebBrowserPersist
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* @param {nsIURI} source URL
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* @param {nsISupports} target file
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*/
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saveURI: function (wbp, source, target) {
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// Handle gzip encoding
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wbp.persistFlags |= Ci.nsIWebBrowserPersist.PERSIST_FLAGS_AUTODETECT_APPLY_CONVERSION;
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// Firefox 35 and below
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try {
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wbp.saveURI(source, null, null, null, null, target, null);
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}
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// Firefox 36+ needs one more parameter
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catch (e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
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wbp.saveURI(source, null, null, null, null, null, target, null);
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}
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},
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/**
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* Launch a process
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* @param {nsIFile|String} cmd Path to command to launch
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* @param {String[]} args Arguments given
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* @return {Promise} Promise resolved to true if command succeeds, or an error otherwise
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*/
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"exec":function(cmd, args) {
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if (typeof cmd == 'string') {
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Components.utils.import("resource://gre/modules/FileUtils.jsm");
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cmd = new FileUtils.File(cmd);
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}
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if(!cmd.isExecutable()) {
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return Q.reject(cmd.path+" is not an executable");
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}
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var proc = Components.classes["@mozilla.org/process/util;1"].
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createInstance(Components.interfaces.nsIProcess);
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proc.init(cmd);
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var deferred = Q.defer();
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proc.runwAsync(args, args.length, {"observe":function(subject, topic) {
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if(topic !== "process-finished") {
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deferred.reject(new Error(cmd.path+" failed"));
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} else if(proc.exitValue != 0) {
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deferred.reject(new Error(cmd.path+" returned exit status "+proc.exitValue));
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} else {
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deferred.resolve(true);
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}
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}});
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return deferred.promise;
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},
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/**
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* Get string data from the clipboard
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* @param {String[]} mimeType MIME type of data to get
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* @return {String|null} Clipboard data, or null if none was available
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*/
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"getClipboard":function(mimeType) {
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var clip = Services.clipboard;
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if (!clip.hasDataMatchingFlavors([mimeType], 1, clip.kGlobalClipboard)) {
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return null;
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}
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var trans = Components.classes["@mozilla.org/widget/transferable;1"]
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.createInstance(Components.interfaces.nsITransferable);
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trans.addDataFlavor(mimeType);
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clip.getData(trans, clip.kGlobalClipboard);
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var str = {};
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try {
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trans.getTransferData(mimeType, str, {});
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str = str.value.QueryInterface(Components.interfaces.nsISupportsString).data;
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}
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catch (e) {
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return null;
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}
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return str;
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},
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/**
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* Determine if one Window is a descendant of another Window
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* @param {DOMWindow} suspected child window
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* @param {DOMWindow} suspected parent window
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* @return {boolean}
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*/
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"isIframeOf":function isIframeOf(childWindow, parentWindow) {
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while(childWindow.parent !== childWindow) {
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childWindow = childWindow.parent;
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if(childWindow === parentWindow) return true;
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}
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},
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/**
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* Converts Zotero.Item to a format expected by translators
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* This is mostly the Zotero web API item JSON format, but with an attachments
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* and notes arrays and optional compatibility mappings for older translators.
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*
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* @param {Zotero.Item} zoteroItem
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* @param {Boolean} legacy Add mappings for legacy (pre-4.0.27) translators
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* @return {Object}
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*/
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"itemToExportFormat": new function() {
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return function(zoteroItem, legacy) {
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var item = zoteroItem.toJSON();
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item.uri = Zotero.URI.getItemURI(zoteroItem);
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delete item.key;
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if (!zoteroItem.isAttachment() && !zoteroItem.isNote()) {
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// Include attachments
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item.attachments = [];
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let attachments = zoteroItem.getAttachments();
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for (let i=0; i<attachments.length; i++) {
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let zoteroAttachment = Zotero.Items.get(attachments[i]),
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attachment = zoteroAttachment.toJSON();
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if (legacy) addCompatibilityMappings(attachment, zoteroAttachment);
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item.attachments.push(attachment);
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}
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// Include notes
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item.notes = [];
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let notes = zoteroItem.getNotes();
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for (let i=0; i<notes.length; i++) {
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let zoteroNote = Zotero.Items.get(notes[i]),
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note = zoteroNote.toJSON();
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if (legacy) addCompatibilityMappings(note, zoteroNote);
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item.notes.push(note);
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}
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}
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if (legacy) addCompatibilityMappings(item, zoteroItem);
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return item;
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}
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function addCompatibilityMappings(item, zoteroItem) {
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item.uniqueFields = {};
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// Meaningless local item ID, but some older export translators depend on it
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item.itemID = zoteroItem.id;
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item.key = zoteroItem.key; // CSV translator exports this
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// "version" is expected to be a field for "computerProgram", which is now
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// called "versionNumber"
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delete item.version;
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if (item.versionNumber) {
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item.version = item.uniqueFields.version = item.versionNumber;
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delete item.versionNumber;
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}
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// SQL instead of ISO-8601
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item.dateAdded = zoteroItem.dateAdded;
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item.dateModified = zoteroItem.dateModified;
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if (item.accessDate) {
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item.accessDate = zoteroItem.getField('accessDate');
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}
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// Map base fields
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for (let field in item) {
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let id = Zotero.ItemFields.getID(field);
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if (!id || !Zotero.ItemFields.isValidForType(id, zoteroItem.itemTypeID)) {
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continue;
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}
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let baseField = Zotero.ItemFields.getName(
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Zotero.ItemFields.getBaseIDFromTypeAndField(item.itemType, field)
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);
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if (!baseField || baseField == field) {
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item.uniqueFields[field] = item[field];
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} else {
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item[baseField] = item[field];
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item.uniqueFields[baseField] = item[field];
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}
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}
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// Add various fields for compatibility with translators pre-4.0.27
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item.itemID = zoteroItem.id;
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item.libraryID = zoteroItem.libraryID;
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// Creators
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if (item.creators) {
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for (let i=0; i<item.creators.length; i++) {
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let creator = item.creators[i];
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if (creator.name) {
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creator.fieldMode = 1;
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creator.lastName = creator.name;
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delete creator.name;
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}
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// Old format used to supply creatorID (the database ID), but no
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// translator ever used it
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}
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}
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if (!zoteroItem.isRegularItem()) {
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item.sourceItemKey = item.parentItem;
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}
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// Tags
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for (let i=0; i<item.tags.length; i++) {
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if (!item.tags[i].type) {
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item.tags[i].type = 0;
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}
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// No translator ever used "primary", "fields", or "linkedItems" objects
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}
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// "related" was never used (array of itemIDs)
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// seeAlso was always present, but it was always an empty array.
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// Zotero RDF translator pretended to use it
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item.seeAlso = [];
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// Fix linkMode
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if (zoteroItem.isAttachment()) {
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item.linkMode = zoteroItem.attachmentLinkMode;
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item.mimeType = item.contentType;
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}
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return item;
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}
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},
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/**
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* Hyphenate an ISBN based on the registrant table available from
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* https://www.isbn-international.org/range_file_generation
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* See isbn.js
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*
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* @param {String} isbn ISBN-10 or ISBN-13
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* @param {Boolean} dontValidate Do not attempt to validate check digit
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* @return {String} Hyphenated ISBN or empty string if invalid ISBN is supplied
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*/
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"hyphenateISBN": function(isbn, dontValidate) {
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isbn = Zotero.Utilities.cleanISBN(isbn, dontValidate);
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if (!isbn) return '';
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var ranges = Zotero.ISBN.ranges,
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parts = [],
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uccPref,
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i = 0;
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if (isbn.length == 10) {
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uccPref = '978';
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} else {
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uccPref = isbn.substr(0,3);
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if (!ranges[uccPref]) return ''; // Probably invalid ISBN, but the checksum is OK
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parts.push(uccPref);
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i = 3; // Skip ahead
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}
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var group = '',
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found = false;
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while (i < isbn.length-3 /* check digit, publication, registrant */) {
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group += isbn.charAt(i);
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if (ranges[uccPref][group]) {
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parts.push(group);
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found = true;
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break;
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}
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i++;
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|
}
|
|
|
|
if (!found) return ''; // Did not find a valid group
|
|
|
|
// Array of registrant ranges that are valid for a group
|
|
// Array always contains an even number of values (as string)
|
|
// From left to right, the values are paired so that the first indicates a
|
|
// lower bound of the range and the right indicates an upper bound
|
|
// The ranges are sorted by increasing number of characters
|
|
var regRanges = ranges[uccPref][group];
|
|
|
|
var registrant = '';
|
|
found = false;
|
|
i++; // Previous loop 'break'ed early
|
|
while (!found && i < isbn.length-2 /* check digit, publication */) {
|
|
registrant += isbn.charAt(i);
|
|
|
|
for(let j=0; j < regRanges.length && registrant.length >= regRanges[j].length; j+=2) {
|
|
if(registrant.length == regRanges[j].length
|
|
&& registrant >= regRanges[j] && registrant <= regRanges[j+1] // Falls within the range
|
|
) {
|
|
parts.push(registrant);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
if (!found) return ''; // Outside of valid range, but maybe we need to update our data
|
|
|
|
parts.push(isbn.substring(i,isbn.length-1)); // Publication is the remainder up to last digit
|
|
parts.push(isbn.charAt(isbn.length-1)); // Check digit
|
|
|
|
return parts.join('-');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Base64 encode / decode
|
|
* From http://www.webtoolkit.info/
|
|
*/
|
|
Zotero.Utilities.Internal.Base64 = {
|
|
// private property
|
|
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
|
|
|
|
// public method for encoding
|
|
encode : function (input) {
|
|
var output = "";
|
|
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
|
|
var i = 0;
|
|
|
|
input = this._utf8_encode(input);
|
|
|
|
while (i < input.length) {
|
|
|
|
chr1 = input.charCodeAt(i++);
|
|
chr2 = input.charCodeAt(i++);
|
|
chr3 = input.charCodeAt(i++);
|
|
|
|
enc1 = chr1 >> 2;
|
|
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
|
|
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
|
|
enc4 = chr3 & 63;
|
|
|
|
if (isNaN(chr2)) {
|
|
enc3 = enc4 = 64;
|
|
} else if (isNaN(chr3)) {
|
|
enc4 = 64;
|
|
}
|
|
|
|
output = output +
|
|
this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
|
|
this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
|
|
|
|
}
|
|
|
|
return output;
|
|
},
|
|
|
|
// public method for decoding
|
|
decode : function (input) {
|
|
var output = "";
|
|
var chr1, chr2, chr3;
|
|
var enc1, enc2, enc3, enc4;
|
|
var i = 0;
|
|
|
|
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
|
|
|
|
while (i < input.length) {
|
|
|
|
enc1 = this._keyStr.indexOf(input.charAt(i++));
|
|
enc2 = this._keyStr.indexOf(input.charAt(i++));
|
|
enc3 = this._keyStr.indexOf(input.charAt(i++));
|
|
enc4 = this._keyStr.indexOf(input.charAt(i++));
|
|
|
|
chr1 = (enc1 << 2) | (enc2 >> 4);
|
|
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
|
|
chr3 = ((enc3 & 3) << 6) | enc4;
|
|
|
|
output = output + String.fromCharCode(chr1);
|
|
|
|
if (enc3 != 64) {
|
|
output = output + String.fromCharCode(chr2);
|
|
}
|
|
if (enc4 != 64) {
|
|
output = output + String.fromCharCode(chr3);
|
|
}
|
|
|
|
}
|
|
|
|
output = this._utf8_decode(output);
|
|
|
|
return output;
|
|
|
|
},
|
|
|
|
// private method for UTF-8 encoding
|
|
_utf8_encode : function (string) {
|
|
string = string.replace(/\r\n/g,"\n");
|
|
var utftext = "";
|
|
|
|
for (var n = 0; n < string.length; n++) {
|
|
|
|
var c = string.charCodeAt(n);
|
|
|
|
if (c < 128) {
|
|
utftext += String.fromCharCode(c);
|
|
}
|
|
else if((c > 127) && (c < 2048)) {
|
|
utftext += String.fromCharCode((c >> 6) | 192);
|
|
utftext += String.fromCharCode((c & 63) | 128);
|
|
}
|
|
else {
|
|
utftext += String.fromCharCode((c >> 12) | 224);
|
|
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
|
|
utftext += String.fromCharCode((c & 63) | 128);
|
|
}
|
|
|
|
}
|
|
|
|
return utftext;
|
|
},
|
|
|
|
// private method for UTF-8 decoding
|
|
_utf8_decode : function (utftext) {
|
|
var string = "";
|
|
var i = 0;
|
|
var c = c1 = c2 = 0;
|
|
|
|
while ( i < utftext.length ) {
|
|
|
|
c = utftext.charCodeAt(i);
|
|
|
|
if (c < 128) {
|
|
string += String.fromCharCode(c);
|
|
i++;
|
|
}
|
|
else if((c > 191) && (c < 224)) {
|
|
c2 = utftext.charCodeAt(i+1);
|
|
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
|
|
i += 2;
|
|
}
|
|
else {
|
|
c2 = utftext.charCodeAt(i+1);
|
|
c3 = utftext.charCodeAt(i+2);
|
|
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
|
|
i += 3;
|
|
}
|
|
|
|
}
|
|
|
|
return string;
|
|
}
|
|
}
|