Node JS version

node_modules/jake/lib/utils/file.js

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+/*
+ * Utilities: A classic collection of JavaScript utilities
+ * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+let fs = require('fs');
+let path = require('path');
+
+/**
+  @name file
+  @namespace file
+*/
+
+let fileUtils = new (function () {
+
+  // Recursively copy files and directories
+  let _copyFile = function (fromPath, toPath, opts) {
+    let from = path.normalize(fromPath);
+    let to = path.normalize(toPath);
+    let options = opts || {};
+    let fromStat;
+    let toStat;
+    let destExists;
+    let destDoesNotExistErr;
+    let content;
+    let filename;
+    let dirContents;
+    let targetDir;
+
+    fromStat = fs.statSync(from);
+
+    try {
+      //console.dir(to + ' destExists');
+      toStat = fs.statSync(to);
+      destExists = true;
+    }
+    catch(e) {
+      //console.dir(to + ' does not exist');
+      destDoesNotExistErr = e;
+      destExists = false;
+    }
+    // Destination dir or file exists, copy into (directory)
+    // or overwrite (file)
+    if (destExists) {
+
+      // If there's a rename-via-copy file/dir name passed, use it.
+      // Otherwise use the actual file/dir name
+      filename = options.rename || path.basename(from);
+
+      // Copying a directory
+      if (fromStat.isDirectory()) {
+        dirContents = fs.readdirSync(from);
+        targetDir = path.join(to, filename);
+        // We don't care if the target dir already exists
+        try {
+          fs.mkdirSync(targetDir, {mode: fromStat.mode & 0o777});
+        }
+        catch(e) {
+          if (e.code !== 'EEXIST') {
+            throw e;
+          }
+        }
+        for (let i = 0, ii = dirContents.length; i < ii; i++) {
+          _copyFile(path.join(from, dirContents[i]), targetDir, {preserveMode: options.preserveMode});
+        }
+      }
+      // Copying a file
+      else {
+        content = fs.readFileSync(from);
+        let mode = fromStat.mode & 0o777;
+        let targetFile = to;
+
+        if (toStat.isDirectory()) {
+          targetFile = path.join(to, filename);
+        }
+
+        let fileExists = fs.existsSync(targetFile);
+        fs.writeFileSync(targetFile, content);
+
+        // If the file didn't already exist, use the original file mode.
+        // Otherwise, only update the mode if preserverMode is true.
+        if(!fileExists || options.preserveMode) {
+          fs.chmodSync(targetFile, mode);
+        }
+      }
+    }
+    // Dest doesn't exist, can't create it
+    else {
+      throw destDoesNotExistErr;
+    }
+  };
+
+  // Remove the given directory
+  let _rmDir = function (dirPath) {
+    let dir = path.normalize(dirPath);
+    let paths = [];
+    paths = fs.readdirSync(dir);
+    paths.forEach(function (p) {
+      let curr = path.join(dir, p);
+      let stat = fs.lstatSync(curr);
+      if (stat.isDirectory()) {
+        _rmDir(curr);
+      }
+      else {
+        try {
+          fs.unlinkSync(curr);
+        } catch(e) {
+          if (e.code === 'EPERM') {
+            fs.chmodSync(curr, parseInt(666, 8));
+            fs.unlinkSync(curr);
+          } else {
+            throw e;
+          }
+        }
+      }
+    });
+    fs.rmdirSync(dir);
+  };
+
+  /**
+    @name file#cpR
+    @public
+    @function
+    @description Copies a directory/file to a destination
+    @param {String} fromPath The source path to copy from
+    @param {String} toPath The destination path to copy to
+    @param {Object} opts Options to use
+      @param {Boolean} [opts.preserveMode] If target file already exists, this
+        determines whether the original file's mode is copied over. The default of
+        false mimics the behavior of the `cp` command line tool. (Default: false)
+  */
+  this.cpR = function (fromPath, toPath, options) {
+    let from = path.normalize(fromPath);
+    let to = path.normalize(toPath);
+    let toStat;
+    let doesNotExistErr;
+    let filename;
+    let opts = options || {};
+
+    if (from == to) {
+      throw new Error('Cannot copy ' + from + ' to itself.');
+    }
+
+    // Handle rename-via-copy
+    try {
+      toStat = fs.statSync(to);
+    }
+    catch(e) {
+      doesNotExistErr = e;
+
+      // Get abs path so it's possible to check parent dir
+      if (!this.isAbsolute(to)) {
+        to = path.join(process.cwd(), to);
+      }
+
+      // Save the file/dir name
+      filename = path.basename(to);
+      // See if a parent dir exists, so there's a place to put the
+      /// renamed file/dir (resets the destination for the copy)
+      to = path.dirname(to);
+      try {
+        toStat = fs.statSync(to);
+      }
+      catch(e) {}
+      if (toStat && toStat.isDirectory()) {
+        // Set the rename opt to pass to the copy func, will be used
+        // as the new file/dir name
+        opts.rename = filename;
+        //console.log('filename ' + filename);
+      }
+      else {
+        throw doesNotExistErr;
+      }
+    }
+
+    _copyFile(from, to, opts);
+  };
+
+  /**
+    @name file#mkdirP
+    @public
+    @function
+    @description Create the given directory(ies) using the given mode permissions
+    @param {String} dir The directory to create
+    @param {Number} mode The mode to give the created directory(ies)(Default: 0755)
+  */
+  this.mkdirP = function (dir, mode) {
+    let dirPath = path.normalize(dir);
+    let paths = dirPath.split(/\/|\\/);
+    let currPath = '';
+    let next;
+
+    if (paths[0] == '' || /^[A-Za-z]+:/.test(paths[0])) {
+      currPath = paths.shift() || '/';
+      currPath = path.join(currPath, paths.shift());
+      //console.log('basedir');
+    }
+    while ((next = paths.shift())) {
+      if (next == '..') {
+        currPath = path.join(currPath, next);
+        continue;
+      }
+      currPath = path.join(currPath, next);
+      try {
+        //console.log('making ' + currPath);
+        fs.mkdirSync(currPath, mode || parseInt(755, 8));
+      }
+      catch(e) {
+        if (e.code != 'EEXIST') {
+          throw e;
+        }
+      }
+    }
+  };
+
+  /**
+    @name file#rmRf
+    @public
+    @function
+    @description Deletes the given directory/file
+    @param {String} p The path to delete, can be a directory or file
+  */
+  this.rmRf = function (p, options) {
+    let stat;
+    try {
+      stat = fs.lstatSync(p);
+      if (stat.isDirectory()) {
+        _rmDir(p);
+      }
+      else {
+        fs.unlinkSync(p);
+      }
+    }
+    catch (e) {}
+  };
+
+  /**
+    @name file#isAbsolute
+    @public
+    @function
+    @return {Boolean/String} If it's absolute the first character is returned otherwise false
+    @description Checks if a given path is absolute or relative
+    @param {String} p Path to check
+  */
+  this.isAbsolute = function (p) {
+    let match = /^[A-Za-z]+:\\|^\//.exec(p);
+    if (match && match.length) {
+      return match[0];
+    }
+    return false;
+  };
+
+  /**
+    @name file#absolutize
+    @public
+    @function
+    @return {String} Returns the absolute path for the given path
+    @description Returns the absolute path for the given path
+    @param {String} p The path to get the absolute path for
+  */
+  this.absolutize = function (p) {
+    if (this.isAbsolute(p)) {
+      return p;
+    }
+    else {
+      return path.join(process.cwd(), p);
+    }
+  };
+
+})();
+
+module.exports = fileUtils;
+