[#94] Backend

https://project.mdnd-it.cc/work_packages/94

SerpentRace_Backend/node_modules/walker/readme.md

@@ -0,0 +1,52 @@
+walker [![Build Status](https://secure.travis-ci.org/daaku/nodejs-walker.png)](http://travis-ci.org/daaku/nodejs-walker)
+======
+
+A nodejs directory walker. Broadcasts events for various file types as well as
+a generic "entry" event for all types and provides the ability to prune
+directory trees. This shows the entire API; everything is optional:
+
+```javascript
+Walker('/etc/')
+  .filterDir(function(dir, stat) {
+    if (dir === '/etc/pam.d') {
+      console.warn('Skipping /etc/pam.d and children')
+      return false
+    }
+    return true
+  })
+  .on('entry', function(entry, stat) {
+    console.log('Got entry: ' + entry)
+  })
+  .on('dir', function(dir, stat) {
+    console.log('Got directory: ' + dir)
+  })
+  .on('file', function(file, stat) {
+    console.log('Got file: ' + file)
+  })
+  .on('symlink', function(symlink, stat) {
+    console.log('Got symlink: ' + symlink)
+  })
+  .on('blockDevice', function(blockDevice, stat) {
+    console.log('Got blockDevice: ' + blockDevice)
+  })
+  .on('fifo', function(fifo, stat) {
+    console.log('Got fifo: ' + fifo)
+  })
+  .on('socket', function(socket, stat) {
+    console.log('Got socket: ' + socket)
+  })
+  .on('characterDevice', function(characterDevice, stat) {
+    console.log('Got characterDevice: ' + characterDevice)
+  })
+  .on('error', function(er, entry, stat) {
+    console.log('Got error ' + er + ' on entry ' + entry)
+  })
+  .on('end', function() {
+    console.log('All files traversed.')
+  })
+```
+
+You specify a root directory to walk and optionally specify a function to prune
+sub-directory trees via the `filterDir` function. The Walker exposes a number
+of events, broadcasting various file type events a generic error event and
+finally the event to signal the end of the process.