Merge pull request #26 from runk/revert-25-master

Revert "Compatilibilty for web and react-native"

encoding/iso2022.js

@@ -1,4 +1,4 @@
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 

encoding/mbcs.js

@@ -1,4 +1,4 @@
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 /**

encoding/sbcs.js

@@ -1,4 +1,4 @@
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 /**

encoding/unicode.js

@@ -1,5 +1,5 @@
 'use strict';
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 /**

index.js

@@ -1,3 +1,6 @@
+
+var fs = require('fs');
+
 var utf8  = require('./encoding/utf8'),
   unicode = require('./encoding/unicode'),
   mbcs    = require('./encoding/mbcs'),
@@ -75,6 +78,49 @@ module.exports.detect = function(buffer, opts) {
   }
 };
 
+module.exports.detectFile = function(filepath, opts, cb) {
+  if (typeof opts === 'function') {
+    cb = opts;
+    opts = undefined;
+  }
+
+  var fd;
+
+  var handler = function(err, buffer) {
+    if (fd) {
+      fs.closeSync(fd);
+    }
+
+    if (err) return cb(err, null);
+    cb(null, self.detect(buffer, opts));
+  };
+
+  if (opts && opts.sampleSize) {
+    fd = fs.openSync(filepath, 'r'),
+      sample = Buffer.allocUnsafe(opts.sampleSize);
+
+    fs.read(fd, sample, 0, opts.sampleSize, null, function(err) {
+      handler(err, sample);
+    });
+    return;
+  }
+
+  fs.readFile(filepath, handler);
+};
+
+module.exports.detectFileSync = function(filepath, opts) {
+  if (opts && opts.sampleSize) {
+    var fd = fs.openSync(filepath, 'r'),
+      sample = Buffer.allocUnsafe(opts.sampleSize);
+
+    fs.readSync(fd, sample, 0, opts.sampleSize);
+    fs.closeSync(fd);
+    return self.detect(sample, opts);
+  }
+
+  return self.detect(fs.readFileSync(filepath), opts);
+};
+
 // Wrappers for the previous functions to return all encodings
 module.exports.detectAll = function(buffer, opts) {
   if (typeof opts !== 'object') {