config redirect

node_modules/ncp/lib/ncp.js

@@ -0,0 +1,261 @@
+var fs = require('fs'),
+    path = require('path');
+
+module.exports = ncp;
+ncp.ncp = ncp;
+
+function ncp (source, dest, options, callback) {
+  var cback = callback;
+
+  if (!callback) {
+    cback = options;
+    options = {};
+  }
+
+  var basePath = process.cwd(),
+      currentPath = path.resolve(basePath, source),
+      targetPath = path.resolve(basePath, dest),
+      filter = options.filter,
+      rename = options.rename,
+      transform = options.transform,
+      clobber = options.clobber !== false,
+      modified = options.modified,
+      dereference = options.dereference,
+      errs = null,
+      started = 0,
+      finished = 0,
+      running = 0,
+      limit = options.limit || ncp.limit || 16;
+
+  limit = (limit < 1) ? 1 : (limit > 512) ? 512 : limit;
+
+  startCopy(currentPath);
+  
+  function startCopy(source) {
+    started++;
+    if (filter) {
+      if (filter instanceof RegExp) {
+        if (!filter.test(source)) {
+          return cb(true);
+        }
+      }
+      else if (typeof filter === 'function') {
+        if (!filter(source)) {
+          return cb(true);
+        }
+      }
+    }
+    return getStats(source);
+  }
+
+  function getStats(source) {
+    var stat = dereference ? fs.stat : fs.lstat;
+    if (running >= limit) {
+      return setImmediate(function () {
+        getStats(source);
+      });
+    }
+    running++;
+    stat(source, function (err, stats) {
+      var item = {};
+      if (err) {
+        return onError(err);
+      }
+
+      // We need to get the mode from the stats object and preserve it.
+      item.name = source;
+      item.mode = stats.mode;
+      item.mtime = stats.mtime; //modified time
+      item.atime = stats.atime; //access time
+
+      if (stats.isDirectory()) {
+        return onDir(item);
+      }
+      else if (stats.isFile()) {
+        return onFile(item);
+      }
+      else if (stats.isSymbolicLink()) {
+        // Symlinks don't really need to know about the mode.
+        return onLink(source);
+      }
+    });
+  }
+
+  function onFile(file) {
+    var target = file.name.replace(currentPath, targetPath);
+    if(rename) {
+      target =  rename(target);
+    }
+    isWritable(target, function (writable) {
+      if (writable) {
+        return copyFile(file, target);
+      }
+      if(clobber) {
+        rmFile(target, function () {
+          copyFile(file, target);
+        });
+      }
+      if (modified) {
+        var stat = dereference ? fs.stat : fs.lstat;
+        stat(target, function(err, stats) {
+            //if souce modified time greater to target modified time copy file
+            if (file.mtime.getTime()>stats.mtime.getTime())
+                copyFile(file, target);
+            else return cb();
+        });
+      }
+      else {
+        return cb();
+      }
+    });
+  }
+
+  function copyFile(file, target) {
+    var readStream = fs.createReadStream(file.name),
+        writeStream = fs.createWriteStream(target, { mode: file.mode });
+    
+    readStream.on('error', onError);
+    writeStream.on('error', onError);
+    
+    if(transform) {
+      transform(readStream, writeStream, file);
+    } else {
+      writeStream.on('open', function() {
+        readStream.pipe(writeStream);
+      });
+    }
+    writeStream.once('finish', function() {
+        if (modified) {
+            //target file modified date sync.
+            fs.utimesSync(target, file.atime, file.mtime);
+            cb();
+        }
+        else cb();
+    });
+  }
+
+  function rmFile(file, done) {
+    fs.unlink(file, function (err) {
+      if (err) {
+        return onError(err);
+      }
+      return done();
+    });
+  }
+
+  function onDir(dir) {
+    var target = dir.name.replace(currentPath, targetPath);
+    isWritable(target, function (writable) {
+      if (writable) {
+        return mkDir(dir, target);
+      }
+      copyDir(dir.name);
+    });
+  }
+
+  function mkDir(dir, target) {
+    fs.mkdir(target, dir.mode, function (err) {
+      if (err) {
+        return onError(err);
+      }
+      copyDir(dir.name);
+    });
+  }
+
+  function copyDir(dir) {
+    fs.readdir(dir, function (err, items) {
+      if (err) {
+        return onError(err);
+      }
+      items.forEach(function (item) {
+        startCopy(path.join(dir, item));
+      });
+      return cb();
+    });
+  }
+
+  function onLink(link) {
+    var target = link.replace(currentPath, targetPath);
+    fs.readlink(link, function (err, resolvedPath) {
+      if (err) {
+        return onError(err);
+      }
+      checkLink(resolvedPath, target);
+    });
+  }
+
+  function checkLink(resolvedPath, target) {
+    if (dereference) {
+      resolvedPath = path.resolve(basePath, resolvedPath);
+    }
+    isWritable(target, function (writable) {
+      if (writable) {
+        return makeLink(resolvedPath, target);
+      }
+      fs.readlink(target, function (err, targetDest) {
+        if (err) {
+          return onError(err);
+        }
+        if (dereference) {
+          targetDest = path.resolve(basePath, targetDest);
+        }
+        if (targetDest === resolvedPath) {
+          return cb();
+        }
+        return rmFile(target, function () {
+          makeLink(resolvedPath, target);
+        });
+      });
+    });
+  }
+
+  function makeLink(linkPath, target) {
+    fs.symlink(linkPath, target, function (err) {
+      if (err) {
+        return onError(err);
+      }
+      return cb();
+    });
+  }
+
+  function isWritable(path, done) {
+    fs.lstat(path, function (err) {
+      if (err) {
+        if (err.code === 'ENOENT') return done(true);
+        return done(false);
+      }
+      return done(false);
+    });
+  }
+
+  function onError(err) {
+    if (options.stopOnError) {
+      return cback(err);
+    }
+    else if (!errs && options.errs) {
+      errs = fs.createWriteStream(options.errs);
+    }
+    else if (!errs) {
+      errs = [];
+    }
+    if (typeof errs.write === 'undefined') {
+      errs.push(err);
+    }
+    else { 
+      errs.write(err.stack + '\n\n');
+    }
+    return cb();
+  }
+
+  function cb(skipped) {
+    if (!skipped) running--;
+    finished++;
+    if ((started === finished) && (running === 0)) {
+      if (cback !== undefined ) {
+        return errs ? cback(errs) : cback(null);
+      }
+    }
+  }
+}
+
+