From 88f3c28067dea895c42f827fa721c34f39d27e0f Mon Sep 17 00:00:00 2001
From: Julien Chaumond <chaumond@gmail.com>
Date: Wed, 2 Apr 2014 16:41:38 +0200
Subject: [PATCH] Polymorphic readFile() function

---
 epub.js | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/epub.js b/epub.js
index aab8f4b..3d9aafa 100644
--- a/epub.js
+++ b/epub.js
@@ -1,5 +1,5 @@
 var XML2JS = require("xml2js").Parser;
-var utillib = require("util");
+var util = require('util');
 var EventEmitter = require('events').EventEmitter;
 
 try {
@@ -66,7 +66,7 @@ function EPub(fname, imageroot, linkroot) {
         this.linkroot += "/";
     }
 }
-utillib.inherits(EPub, EventEmitter);
+util.inherits(EPub, EventEmitter);
 
 /**
  *  EPub#parse() -> undefined
@@ -729,5 +729,25 @@ EPub.prototype.getFile = function (id, callback) {
 };
 
 
+EPub.prototype.readFile = function(filename, options, callback_) {
+    var callback = arguments[arguments.length - 1];
+    
+    if (util.isFunction(options) || !options) {
+        this.zip.readFile(filename, callback);
+    } else if (util.isString(options)) {
+        // options is an encoding
+        this.zip.readFile(filename, function(err, data) {
+            if (err) {
+                callback(new Error('Reading archive failed'));
+                return;
+            }
+            callback(null, data.toString(options));
+        });
+    } else {
+        throw new TypeError('Bad arguments');
+    }
+};
+
+
 // Expose to the world
 module.exports = EPub;
\ No newline at end of file