476 lines
17 KiB
JavaScript
476 lines
17 KiB
JavaScript
var fs = require("fs"),
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pth = require("path");
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fs.existsSync = fs.existsSync || pth.existsSync;
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var ZipEntry = require("./zipEntry"),
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ZipFile = require("./zipFile"),
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Utils = require("./util");
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module.exports = function(/*String*/input) {
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var _zip = undefined,
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_filename = "";
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if (input && typeof input === "string") { // load zip file
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if (fs.existsSync(input)) {
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_filename = input;
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_zip = new ZipFile(input, Utils.Constants.FILE);
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} else {
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throw Utils.Errors.INVALID_FILENAME;
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}
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} else if(input && Buffer.isBuffer(input)) { // load buffer
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_zip = new ZipFile(input, Utils.Constants.BUFFER);
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} else { // create new zip file
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_zip = new ZipFile(null, Utils.Constants.NONE);
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}
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function getEntry(/*Object*/entry) {
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if (entry && _zip) {
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var item;
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// If entry was given as a file name
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if (typeof entry === "string")
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item = _zip.getEntry(entry);
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// if entry was given as a ZipEntry object
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if (typeof entry === "object" && entry.entryName != undefined && entry.header != undefined)
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item = _zip.getEntry(entry.entryName);
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if (item) {
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return item;
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}
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}
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return null;
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}
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return {
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/**
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* Extracts the given entry from the archive and returns the content as a Buffer object
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* @param entry ZipEntry object or String with the full path of the entry
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*
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* @return Buffer or Null in case of error
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*/
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readFile : function(/*Object*/entry) {
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var item = getEntry(entry);
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return item && item.getData() || null;
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},
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/**
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* Asynchronous readFile
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* @param entry ZipEntry object or String with the full path of the entry
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* @param callback
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*
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* @return Buffer or Null in case of error
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*/
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readFileAsync : function(/*Object*/entry, /*Function*/callback) {
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var item = getEntry(entry);
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if (item) {
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item.getDataAsync(callback);
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} else {
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callback(null,"getEntry failed for:" + entry)
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}
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},
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/**
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* Extracts the given entry from the archive and returns the content as plain text in the given encoding
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* @param entry ZipEntry object or String with the full path of the entry
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* @param encoding Optional. If no encoding is specified utf8 is used
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*
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* @return String
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*/
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readAsText : function(/*Object*/entry, /*String - Optional*/encoding) {
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var item = getEntry(entry);
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if (item) {
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var data = item.getData();
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if (data && data.length) {
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return data.toString(encoding || "utf8");
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}
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}
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return "";
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},
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/**
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* Asynchronous readAsText
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* @param entry ZipEntry object or String with the full path of the entry
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* @param callback
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* @param encoding Optional. If no encoding is specified utf8 is used
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*
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* @return String
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*/
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readAsTextAsync : function(/*Object*/entry, /*Function*/callback, /*String - Optional*/encoding) {
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var item = getEntry(entry);
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if (item) {
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item.getDataAsync(function(data) {
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if (data && data.length) {
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callback(data.toString(encoding || "utf8"));
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} else {
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callback("");
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}
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})
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} else {
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callback("");
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}
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},
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/**
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* Remove the entry from the file or the entry and all it's nested directories and files if the given entry is a directory
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*
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* @param entry
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*/
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deleteFile : function(/*Object*/entry) { // @TODO: test deleteFile
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var item = getEntry(entry);
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if (item) {
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_zip.deleteEntry(item.entryName);
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}
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},
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/**
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* Adds a comment to the zip. The zip must be rewritten after adding the comment.
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*
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* @param comment
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*/
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addZipComment : function(/*String*/comment) { // @TODO: test addZipComment
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_zip.comment = comment;
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},
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/**
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* Returns the zip comment
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*
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* @return String
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*/
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getZipComment : function() {
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return _zip.comment || '';
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},
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/**
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* Adds a comment to a specified zipEntry. The zip must be rewritten after adding the comment
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* The comment cannot exceed 65535 characters in length
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*
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* @param entry
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* @param comment
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*/
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addZipEntryComment : function(/*Object*/entry,/*String*/comment) {
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var item = getEntry(entry);
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if (item) {
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item.comment = comment;
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}
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},
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/**
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* Returns the comment of the specified entry
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*
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* @param entry
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* @return String
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*/
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getZipEntryComment : function(/*Object*/entry) {
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var item = getEntry(entry);
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if (item) {
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return item.comment || '';
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}
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return ''
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},
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/**
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* Updates the content of an existing entry inside the archive. The zip must be rewritten after updating the content
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*
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* @param entry
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* @param content
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*/
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updateFile : function(/*Object*/entry, /*Buffer*/content) {
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var item = getEntry(entry);
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if (item) {
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item.setData(content);
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}
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},
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/**
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* Adds a file from the disk to the archive
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*
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* @param localPath
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*/
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addLocalFile : function(/*String*/localPath, /*String*/zipPath, /*String*/zipName) {
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if (fs.existsSync(localPath)) {
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if(zipPath){
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zipPath=zipPath.split("\\").join("/");
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if(zipPath.charAt(zipPath.length - 1) != "/"){
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zipPath += "/";
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}
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}else{
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zipPath="";
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}
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var p = localPath.split("\\").join("/").split("/").pop();
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if(zipName){
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this.addFile(zipPath+zipName, fs.readFileSync(localPath), "", 0)
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}else{
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this.addFile(zipPath+p, fs.readFileSync(localPath), "", 0)
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}
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} else {
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throw Utils.Errors.FILE_NOT_FOUND.replace("%s", localPath);
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}
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},
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/**
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* Adds a local directory and all its nested files and directories to the archive
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*
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* @param localPath
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* @param zipPath optional path inside zip
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* @param filter optional RegExp or Function if files match will
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* be included.
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*/
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addLocalFolder : function(/*String*/localPath, /*String*/zipPath, /*RegExp|Function*/filter) {
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if (filter === undefined) {
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filter = function() { return true; };
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} else if (filter instanceof RegExp) {
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filter = function(filter) {
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return function(filename) {
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return filter.test(filename);
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}
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}(filter);
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}
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if(zipPath){
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zipPath=zipPath.split("\\").join("/");
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if(zipPath.charAt(zipPath.length - 1) != "/"){
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zipPath += "/";
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}
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}else{
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zipPath="";
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}
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localPath = localPath.split("\\").join("/"); //windows fix
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localPath = pth.normalize(localPath);
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if (localPath.charAt(localPath.length - 1) != "/")
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localPath += "/";
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if (fs.existsSync(localPath)) {
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var items = Utils.findFiles(localPath),
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self = this;
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if (items.length) {
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items.forEach(function(path) {
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var p = path.split("\\").join("/").replace( new RegExp(localPath, 'i'), ""); //windows fix
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if (filter(p)) {
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if (p.charAt(p.length - 1) !== "/") {
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self.addFile(zipPath+p, fs.readFileSync(path), "", 0)
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} else {
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self.addFile(zipPath+p, new Buffer(0), "", 0)
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}
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}
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});
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}
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} else {
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throw Utils.Errors.FILE_NOT_FOUND.replace("%s", localPath);
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}
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},
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/**
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* Allows you to create a entry (file or directory) in the zip file.
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* If you want to create a directory the entryName must end in / and a null buffer should be provided.
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* Comment and attributes are optional
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*
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* @param entryName
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* @param content
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* @param comment
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* @param attr
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*/
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addFile : function(/*String*/entryName, /*Buffer*/content, /*String*/comment, /*Number*/attr) {
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var entry = new ZipEntry();
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entry.entryName = entryName;
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entry.comment = comment || "";
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entry.attr = attr || 438; //0666;
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if (entry.isDirectory && content.length) {
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// throw Utils.Errors.DIRECTORY_CONTENT_ERROR;
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}
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entry.setData(content);
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_zip.setEntry(entry);
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},
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/**
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* Returns an array of ZipEntry objects representing the files and folders inside the archive
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*
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* @return Array
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*/
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getEntries : function() {
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if (_zip) {
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return _zip.entries;
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} else {
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return [];
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}
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},
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/**
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* Returns a ZipEntry object representing the file or folder specified by ``name``.
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*
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* @param name
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* @return ZipEntry
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*/
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getEntry : function(/*String*/name) {
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return getEntry(name);
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},
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/**
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* Extracts the given entry to the given targetPath
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* If the entry is a directory inside the archive, the entire directory and it's subdirectories will be extracted
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*
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* @param entry ZipEntry object or String with the full path of the entry
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* @param targetPath Target folder where to write the file
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* @param maintainEntryPath If maintainEntryPath is true and the entry is inside a folder, the entry folder
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* will be created in targetPath as well. Default is TRUE
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* @param overwrite If the file already exists at the target path, the file will be overwriten if this is true.
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* Default is FALSE
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*
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* @return Boolean
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*/
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extractEntryTo : function(/*Object*/entry, /*String*/targetPath, /*Boolean*/maintainEntryPath, /*Boolean*/overwrite) {
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overwrite = overwrite || false;
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maintainEntryPath = typeof maintainEntryPath == "undefined" ? true : maintainEntryPath;
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var item = getEntry(entry);
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if (!item) {
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throw Utils.Errors.NO_ENTRY;
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}
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var target = pth.resolve(targetPath, maintainEntryPath ? item.entryName : pth.basename(item.entryName));
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if (item.isDirectory) {
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target = pth.resolve(target, "..");
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var children = _zip.getEntryChildren(item);
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children.forEach(function(child) {
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if (child.isDirectory) return;
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var content = child.getData();
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if (!content) {
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throw Utils.Errors.CANT_EXTRACT_FILE;
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}
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Utils.writeFileTo(pth.resolve(targetPath, maintainEntryPath ? child.entryName : child.entryName.substr(item.entryName.length)), content, overwrite);
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});
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return true;
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}
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var content = item.getData();
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if (!content) throw Utils.Errors.CANT_EXTRACT_FILE;
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if (fs.existsSync(target) && !overwrite) {
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throw Utils.Errors.CANT_OVERRIDE;
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}
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Utils.writeFileTo(target, content, overwrite);
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return true;
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},
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/**
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* Extracts the entire archive to the given location
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*
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* @param targetPath Target location
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* @param overwrite If the file already exists at the target path, the file will be overwriten if this is true.
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* Default is FALSE
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*/
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extractAllTo : function(/*String*/targetPath, /*Boolean*/overwrite) {
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overwrite = overwrite || false;
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if (!_zip) {
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throw Utils.Errors.NO_ZIP;
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}
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_zip.entries.forEach(function(entry) {
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if (entry.isDirectory) {
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Utils.makeDir(pth.resolve(targetPath, entry.entryName.toString()));
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return;
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}
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var content = entry.getData();
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if (!content) {
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throw Utils.Errors.CANT_EXTRACT_FILE + "2";
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}
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Utils.writeFileTo(pth.resolve(targetPath, entry.entryName.toString()), content, overwrite);
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})
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},
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/**
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* Asynchronous extractAllTo
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*
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* @param targetPath Target location
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* @param overwrite If the file already exists at the target path, the file will be overwriten if this is true.
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* Default is FALSE
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* @param callback
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*/
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extractAllToAsync : function(/*String*/targetPath, /*Boolean*/overwrite, /*Function*/callback) {
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overwrite = overwrite || false;
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if (!_zip) {
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callback(new Error(Utils.Errors.NO_ZIP));
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return;
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}
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var entries = _zip.entries;
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var i = entries.length;
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entries.forEach(function(entry) {
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if(i <= 0) return; // Had an error already
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if (entry.isDirectory) {
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Utils.makeDir(pth.resolve(targetPath, entry.entryName.toString()));
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if(--i == 0)
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callback(undefined);
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return;
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}
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entry.getDataAsync(function(content) {
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if(i <= 0) return;
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if (!content) {
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i = 0;
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callback(new Error(Utils.Errors.CANT_EXTRACT_FILE + "2"));
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return;
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}
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Utils.writeFileToAsync(pth.resolve(targetPath, entry.entryName.toString()), content, overwrite, function(succ) {
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if(i <= 0) return;
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if(!succ) {
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i = 0;
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callback(new Error('Unable to write'));
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return;
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}
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if(--i == 0)
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callback(undefined);
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});
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});
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})
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},
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/**
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* Writes the newly created zip file to disk at the specified location or if a zip was opened and no ``targetFileName`` is provided, it will overwrite the opened zip
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*
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* @param targetFileName
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* @param callback
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*/
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writeZip : function(/*String*/targetFileName, /*Function*/callback) {
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if (arguments.length == 1) {
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if (typeof targetFileName == "function") {
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callback = targetFileName;
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targetFileName = "";
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}
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}
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if (!targetFileName && _filename) {
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targetFileName = _filename;
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}
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if (!targetFileName) return;
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var zipData = _zip.compressToBuffer();
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if (zipData) {
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var ok = Utils.writeFileTo(targetFileName, zipData, true);
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if (typeof callback == 'function') callback(!ok? new Error("failed"): null, "");
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}
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},
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/**
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* Returns the content of the entire zip file as a Buffer object
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*
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* @return Buffer
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*/
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toBuffer : function(/*Function*/onSuccess,/*Function*/onFail,/*Function*/onItemStart,/*Function*/onItemEnd) {
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this.valueOf = 2;
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if (typeof onSuccess == "function") {
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_zip.toAsyncBuffer(onSuccess,onFail,onItemStart,onItemEnd);
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return null;
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}
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return _zip.compressToBuffer()
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}
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}
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};
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