mirror of
https://github.com/Jermolene/TiddlyWiki5
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112 lines
2.6 KiB
JavaScript
112 lines
2.6 KiB
JavaScript
/*\
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title: $:/core/modules/utils/filesystem.js
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type: application/javascript
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module-type: utils-node
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File system utilities
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var fs = require("fs"),
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path = require("path");
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/*
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Recursively (and synchronously) copy a directory and all its content
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*/
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exports.copyDirectory = function(srcPath,dstPath) {
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// Remove any trailing path separators
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srcPath = $tw.utils.removeTrailingSeparator(srcPath);
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dstPath = $tw.utils.removeTrailingSeparator(dstPath);
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// Create the destination directory
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var err = $tw.utils.createDirectory(dstPath);
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if(err) {
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return err;
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}
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// Function to copy a folder full of files
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var copy = function(srcPath,dstPath) {
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var srcStats = fs.lstatSync(srcPath),
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dstExists = fs.existsSync(dstPath);
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if(srcStats.isFile()) {
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$tw.utils.copyFile(srcPath,dstPath);
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} else if(srcStats.isDirectory()) {
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var items = fs.readdirSync(srcPath);
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for(var t=0; t<items.length; t++) {
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var item = items[t],
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err = copy(srcPath + path.sep + item,dstPath + path.sep + item);
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if(err) {
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return err;
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}
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};
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}
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};
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copy(srcPath,dstPath);
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return null;
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};
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/*
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Copy a file
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*/
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var FILE_BUFFER_LENGTH = 64 * 1024,
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fileBuffer = $tw.node && new Buffer(FILE_BUFFER_LENGTH);
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exports.copyFile = function(srcPath,dstPath) {
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// Create any directories in the destination
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$tw.utils.createDirectory(path.dirname(dstPath));
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// Copy the file
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var srcFile = fs.openSync(srcPath,"r"),
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dstFile = fs.openSync(dstPath,"w"),
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bytesRead = 1,
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pos = 0;
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while (bytesRead > 0) {
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bytesRead = fs.readSync(srcFile,fileBuffer,0,FILE_BUFFER_LENGTH,pos);
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fs.writeSync(dstFile,fileBuffer,0,bytesRead);
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pos += bytesRead;
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}
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fs.closeSync(srcFile);
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fs.closeSync(dstFile);
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return null;
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}
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/*
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Remove trailing path separator
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*/
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exports.removeTrailingSeparator = function(dirPath) {
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var len = dirPath.length;
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if(dirPath.charAt(len-1) === path.sep) {
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dirPath = dirPath.substr(0,len-1);
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}
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return dirPath;
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};
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/*
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Recursively create a directory
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*/
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exports.createDirectory = function(dirPath) {
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var parts = dirPath.split(path.sep);
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for(var component=0; component<parts.length; component++) {
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var subDirPath = parts.slice(0,component+1).join(path.sep);
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if(!$tw.utils.isDirectory(subDirPath)) {
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try {
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fs.mkdirSync(subDirPath);
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} catch(e) {
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return "Error creating directory '" + subDirPath + "'";
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}
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}
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}
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return null;
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};
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/*
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Check if a path identifies a directory
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*/
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exports.isDirectory = function(dirPath) {
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return fs.existsSync(dirPath) && fs.statSync(dirPath).isDirectory();
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};
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})();
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