mirror of https://github.com/webpack/webpack.git
120 lines
3.8 KiB
JavaScript
120 lines
3.8 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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function MemoryOutputFileSystem(data) {
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this.data = data || {};
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}
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module.exports = MemoryOutputFileSystem;
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function isDir(item) {
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if(typeof item != "object") return false;
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return item[""] === true;
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}
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function isFile(item) {
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if(typeof item == "string") return true;
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if(typeof item != "object") return false;
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return !item[""];
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}
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function pathToArray(path) {
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var nix = /^\//.test(path);
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if(!nix) {
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if(!/^[A-Za-z]:\\/.test(path)) return;
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path = path.replace(/\\/g, "/");
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}
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path = path.replace(/\/+/g, "/"); // multi slashs
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path = (nix ? path.substr(1) : path).split("/");
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if(!path[path.length-1]) path.pop();
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return path;
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}
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MemoryOutputFileSystem.prototype.mkdirp = function(_path, callback) {
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var path = pathToArray(_path);
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if(!path) return callback(new Error("Invalid path " + _path));
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if(path.length == 0) return callback();
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var current = this.data;
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for(var i = 0; i < path.length; i++) {
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if(isFile(current[path[i]]))
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return callback(new Error("Path is a file " + _path));
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else if(!isDir(current[path[i]]))
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current[path[i]] = {"":true};
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current = current[path[i]];
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}
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return callback();
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};
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MemoryOutputFileSystem.prototype.mkdir = function(_path, callback) {
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var path = pathToArray(_path);
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if(!path) return callback(new Error("Invalid path " + _path));
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if(path.length == 0) return callback();
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var current = this.data;
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for(var i = 0; i < path.length - 1; i++) {
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if(!isDir(current[path[i]]))
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return callback(new Error("Path doesn't exists " + _path));
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current = current[path[i]];
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}
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if(isDir(current[path[i]]))
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return callback(new Error("Directory already exist " + _path));
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else if(isFile(current[path[i]]))
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return callback(new Error("Cannot mkdir on file " + _path));
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current[path[i]] = {"":true};
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return callback();
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};
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MemoryOutputFileSystem.prototype.rmdir = function(_path, callback) {
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var path = pathToArray(_path);
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if(!path) return callback(new Error("Invalid path " + _path));
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if(path.length == 0) return callback(new Error("Path cannot be removed " + _path));
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var current = this.data;
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for(var i = 0; i < path.length - 1; i++) {
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if(!isDir(current[path[i]]))
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return callback(new Error("Path doesn't exists " + _path));
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current = current[path[i]];
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}
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if(!isDir(current[path[i]]))
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return callback(new Error("Directory doesn't exist " + _path));
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delete current[path[i]];
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return callback();
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};
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MemoryOutputFileSystem.prototype.unlink = function(_path, callback) {
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var path = pathToArray(_path);
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if(!path) return callback(new Error("Invalid path " + _path));
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if(path.length == 0) return callback(new Error("Path cannot be unlinked " + _path));
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var current = this.data;
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for(var i = 0; i < path.length - 1; i++) {
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if(!isDir(current[path[i]]))
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return callback(new Error("Path doesn't exists " + _path));
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current = current[path[i]];
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}
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if(!isFile(current[path[i]]))
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return callback(new Error("File doesn't exist " + _path));
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delete current[path[i]];
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return callback();
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};
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MemoryOutputFileSystem.prototype.writeFile = function(_path, content, callback) {
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if(!content) return callback(new Error("No content"));
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var path = pathToArray(_path);
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if(!path) return callback(new Error("Invalid path " + _path));
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if(path.length == 0) return callback(new Error("Path is not a file " + _path));
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var current = this.data;
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for(var i = 0; i < path.length - 1; i++) {
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if(!isDir(current[path[i]]))
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return callback(new Error("Path doesn't exists " + _path));
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current = current[path[i]];
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}
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if(isDir(current[path[i]]))
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return callback(new Error("Cannot writeFile on directory " + _path));
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current[path[i]] = content;
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return callback();
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};
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MemoryOutputFileSystem.prototype.join = function(a, b) {
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if(a[a.length-1] == "/") return a + b;
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if(a[a.length-1] == "\\") return a + b;
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return a + "/" + b;
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};
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