138 lines
3.5 KiB
JavaScript
138 lines
3.5 KiB
JavaScript
var path = require('canonical-path');
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var fs = require('fs');
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var minimatch = require("minimatch");
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// Utility wrappers over fs functions
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module.exports = {
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addSymlink: addSymlink,
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removeSymlink: removeSymlink,
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removeDirSync: removeDirSync,
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lstatSyncExt: lstatSyncExt,
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};
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// create a new link (linkPath) that points
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// to realPath - will also delete the linkPath
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// if it is a preexisting folder and not itself a symbolic link before it
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// starts.
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function addSymlink(realPath, linkPath) {
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// check if the linkPath is a folder
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// and if so delete it
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var stat = lstatSyncExt(linkPath);
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if (stat && stat.isSymbolicLink()) {
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// todo: check if it points to realPath
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return;
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}
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if (stat && stat.isDirectory()) {
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removeDirSync(linkPath);
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}
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symLinkSyncExt(realPath, linkPath, 'dir');
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}
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function removeSymlink(linkPath) {
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var stat = lstatSyncExt(linkPath);
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if (!stat || !stat.isSymbolicLink()) return;
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fs.unlinkSync(linkPath);
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}
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// remove a dir and all of its files - sync
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function removeDirSync(dirPath) {
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var files;
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try {
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files = fs.readdirSync(dirPath);
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}
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catch(e) { return; }
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if (files.length > 0) {
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for (var i = 0; i < files.length; i++) {
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var filePath = path.join(dirPath, files[i]);
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var stat = fs.lstatSync(filePath);
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if (stat.isFile() || stat.isSymbolicLink()) {
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fs.unlinkSync(filePath);
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} else {
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removeDirSync(filePath);
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}
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}
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}
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fs.rmdirSync(dirPath);
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}
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// same as lstatSync except returns a null for nonExistent file instead of throwing
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function lstatSyncExt(filePath) {
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try {
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var stat = fs.lstatSync(filePath);
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} catch (e) {
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if(e.code == 'ENOENT') return null;
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throw e;
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}
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return stat;
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}
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function symLinkSyncExt(realPath, linkPath, type) {
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// fs.symlink requires the real path to be fully resolved.
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realPath = path.resolve(realPath);
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try {
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fs.symlinkSync(realPath, linkPath, type);
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} catch (e) {
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var msg = "Unable to create symlink: " + linkPath;
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if (e.code == "EPERM") {
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msg += "\nPermissions issue, on windows this function must be run as an administrator."
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}
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console.log(msg + "\n" + e);
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}
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}
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// Talk to Jay - not currently needed.
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//
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//function globWithIgnore(basePath, globs, ignoreGlobs, options) {
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// options = options || {};
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// options.filters = globs.map(function (glob) {
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// return minimatch.filter(glob);
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// });
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// options.ignoreFilters = ignoreGlobs && ignoreGlobs.map(function(glob) {
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// return minimatch.filter(glob);
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// });
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// options.ignoreSymlink = options.ignoreSymlink == null ? true : false;
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// return globSyncCore(basePath, options);
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//}
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//
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//function globSyncCore(basePath, options) {
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// var results = [];
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// var files;
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// try {
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// files = fs.readdirSync(basePath);
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// }
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// catch(e) { return results; }
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//
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// files.forEach(function(file) {
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// var filePath = path.join(basePath, file);
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// var shouldIgnore = options.ignoreFilters && options.ignoreFilters.some(function(filter) {
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// return filter(filePath);
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// });
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// if (shouldIgnore) return;
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//
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// var stat = fs.lstatSync(filePath);
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//
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// if (stat.isDirectory()) {
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// if (stat.isSymbolicLink() && options.ignoreSymlink) {
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// // do nothing
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// } else {
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// var partialResults = globSyncCore(filePath, options);
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// Array.prototype.push.apply(results, partialResults);
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// }
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// } else {
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// var ok = options.filters.every(function(filter) {
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// return filter(filePath);
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// });
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// if (ok) {
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// results.push(filePath);
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// }
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// }
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// });
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// return results;
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//}
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