update file-ext to new format

lib/file-ext.js

@@ -2,94 +2,101 @@
 // Copyright 2010 - 2011 Sami Samhuri <sami@samhuri.net>
 
 var fs = require('fs')
-  , ArrayExt = require('./array-ext').ArrayExt
+  , ArrayExt = require('./array-ext')
   , LineEmitter = require('./line-emitter').LineEmitter
-  , ext = require('./ext')
+  , ObjectExt = require('./object-ext')
   , constants = require('constants')
+  , FileExt
   ;
 
-exports.extend = function(obj) {
-    ext.extend(obj || fs, FileExt);
+FileExt =
+{ eachLine: eachLine
+, exists: exists
+, grep: grep
+, home: home
+, readLines: readLines
 }
 
-var FileExt = exports.FileExt = {
-
-    eachLine: function(f, optionsOrLineFn, endFn) {
-        var lineFn, hasLineFn, hasEndFn;
-        if (typeof optionsOrLineFn === 'object') {
-          lineFn = optionsOrLineFn.line;
-          endFn = optionsOrLineFn.end;
-        }
-        else if (typeof optionsOrLineFn === 'function') {
-          lineFn = optionsOrLineFn;
-        }
-        hasLineFn = typeof lineFn == 'function';
-        hasEndFn = typeof endFn == 'function';
-        if (!hasLineFn && !hasEndFn) throw new Error('bad arguments');
-        var le = new LineEmitter(f);
-        if (hasLineFn) le.on('line', lineFn);
-        if (hasEndFn) le.on('end', endFn);
-    }
-
-  , exists: function(f) {
-        try {
-            fs.statSync(f)
-            return true
-        } catch (e) {
-            if (e.errno === constants.ENOENT) return false
-            throw e
-        }
-    }
-
-  , grep: function(regex, f, callback) {
-        if (!callback) throw new Error('grep requires a callback');
-        var results = [];
-        FileExt.eachLine(f,
-            { line: function(line) { if (line.match(regex)) results.push(line); }
-            , end: callback(results)
-            });
-    }
-
-  , home: function(user, callback) {
-        // user is optional so the first param may be a callback
-        if (typeof user === 'function') {
-            callback = user;
-            user = null;
-        }
-        if (user && callback && user !== process.env['USER']) {
-            FileExt.grep(new RegExp('^' + user + ':'), '/etc/passwd', function(line) {
-                callback(line && line.split(':')[4]);
-            });
-        }
-        else if (user)
-            throw new Error('home requires a callback with user');
-        else if (callback)
-            callback(process.env['HOME']);
-        else
-            return process.env['HOME'];
-    }
-
-  , readLines: function(f, cb) {
-        var lines = [];
-        FileExt.eachLine(f, { line: function(line) { lines.push(line); }
-                            , end: function() { cb(lines); }
-                            });
-    }
-
-};
-
 // isDirectory, isFile, isSymbolicLink, etc.
 var s = fs.statSync(__dirname);
 Object.keys(Object.getPrototypeOf(s)).forEach(function(k) {
-    if (k.match(/^is/) && typeof s[k] === 'function') {
-        FileExt[k] = function(f, cb) {
-            if (cb) {
-                fs.stat(f, function(err, stat) {
-                    cb(err, err ? null : stat[k]());
-                });
-            } else {
-                return fs.statSync(f)[k]();
-            }
-        }
+  if (k.match(/^is/) && typeof s[k] === 'function') {
+    FileExt[k] = function(f, cb) {
+      if (cb) {
+        fs.stat(f, function(err, stat) {
+          cb(err, err ? null : stat[k]());
+        });
+      } else {
+        return fs.statSync(f)[k]();
+      }
     }
+  }
 });
+
+exports.extendNative = function() {
+  ObjectExt.extend(fs, FileExt);
+};
+
+ObjectExt.extend(exports, FileExt);
+
+function eachLine(f, optionsOrLineFn, endFn) {
+  var lineFn, hasLineFn, hasEndFn;
+  if (typeof optionsOrLineFn === 'object') {
+    lineFn = optionsOrLineFn.line;
+    endFn = optionsOrLineFn.end;
+  }
+  else if (typeof optionsOrLineFn === 'function') {
+    lineFn = optionsOrLineFn;
+  }
+  hasLineFn = typeof lineFn == 'function';
+  hasEndFn = typeof endFn == 'function';
+  if (!hasLineFn && !hasEndFn) throw new Error('bad arguments');
+  var le = new LineEmitter(f);
+  if (hasLineFn) le.on('line', lineFn);
+  if (hasEndFn) le.on('end', endFn);
+}
+
+function exists(f) {
+  try {
+    fs.statSync(f)
+    return true
+  } catch (e) {
+    if (e.errno === constants.ENOENT) return false
+    throw e
+  }
+}
+
+function grep(regex, f, callback) {
+  if (!callback) throw new Error('grep requires a callback');
+  var results = [];
+  eachLine(f,
+    { line: function(line) { if (line.match(regex)) results.push(line); }
+    , end: callback(results)
+    });
+}
+
+function home(user, callback) {
+  // user is optional so the first param may be a callback
+  if (typeof user === 'function') {
+    callback = user;
+    user = null;
+  }
+  if (user && callback && user !== process.env['USER']) {
+    grep(new RegExp('^' + user + ':'), '/etc/passwd', function(line) {
+      callback(line && line.split(':')[4]);
+    });
+  }
+  else if (user)
+    throw new Error('home requires a callback with user');
+  else if (callback)
+    callback(process.env['HOME']);
+  else
+    return process.env['HOME'];
+}
+
+function readLines(f, cb) {
+  var lines = [];
+  eachLine(f, { line: function(line) { lines.push(line); }
+              , end: function() { cb(lines); }
+              });
+}

lib/index.js

@@ -28,7 +28,7 @@ module.exports =
     MathExt.extendNative();
 
     // Extend Node
-    FileExt.extend(require('fs'));
+    FileExt.extendNative(require('fs'));
 
     global['Range'] = Range;
     global['repr'] = repr;