Merge pull request #27 from ethul/topic/issue-26

Topic/issue 26

1 files changed, 36 insertions, 0 deletions

diff --git a/src/PursLoader/FS.js b/src/PursLoader/FS.js
new file mode 100644
index 0000000..1a7f5b0
--- /dev/null
+++ b/src/PursLoader/FS.js
@@ -0,0 +1,36 @@
+'use strict';
+
+// module PursLoader.FS
+
+var fs = require('fs');
+
+var async = require('async');
+
+function writeFileUtf8Fn(filepath, contents, errback, callback) {
+  return function(){
+    fs.writeFile(filepath, contents, function(error){
+      if (error) errback(error)();
+      else callback()();
+    });
+  };
+}
+
+function findFileUtf8Fn(nothing, just, regex, filepaths, errback, callback) {
+  return function(){
+    function findFile(filepath, callback) {
+      fs.readFile(filepath, {encoding: 'utf-8'}, function(error, result){
+        if (error) callback(false);
+        else callback(regex.test(result));
+      });
+    }
+
+    async.detect(filepaths, findFile, function(result){
+      if (!result) callback(nothing)();
+      else callback(just(result))();
+    });
+  };
+}
+
+exports.writeFileUtf8Fn = writeFileUtf8Fn;
+
+exports.findFileUtf8Fn = findFileUtf8Fn;