Version 0.0.3

Author: gpedro

README.md

@@ -13,6 +13,12 @@ npm install tibia-signature-extractor -g
 tibia-signature-extractor -f Tibia.spr
 ```
 
+## API
+    * parse(filename)
+        * filename - required - Filename
+        * returns String (signature)
+
+
 ## References
   * [Tibia Sprite File Struture](http://tpforums.org/forum/threads/5031-Tibia-Sprite-File-Structure)
   * [Tibia Dat File Struture](http://tpforums.org/forum/threads/5030-Tibia-Data-File-Structure)

bin/index.js

@@ -0,0 +1,23 @@
+#!/usr/bin/env node
+
+var fs  = require('fs')
+  , cmd = require('commander')
+  , lib = require('../lib/index')
+  , pkg = require('../package.json');
+
+cmd
+  .version(pkg.version)
+  .option('-f, --file <file>', 'specify a file like Tibia.spr or Tibia.dat', '')
+  .parse(process.argv);
+
+var file = cmd.file;
+if(file) {
+  var sign = lib.parse(file);
+  if (!sign) {
+    cmd.help();
+  } else {
+    console.log('The ' + sign.type + ' signature is ' + sign.sign);
+  }
+} else {
+  cmd.help();
+}

index.js

@@ -0,0 +1,31 @@
+var fs = require('fs')
+, path = require('path');
+
+function abort(str) {
+  console.error(str);
+  process.exit(1);
+}
+
+function getSignature(filename, cb) {
+  if(fs.existsSync(filename)) {
+    var data = fs.readFileSync(filename);
+    return data.readUInt32LE(0).toString(16).toUpperCase();
+  } else {
+    abort('File ' + path.basename(filename) + ' not found.');
+  }
+}
+
+module.exports = {
+  parse: function(file) {
+    if(file) {
+      var ext = path.extname(file).toLowerCase();
+      if (!(ext === '.spr' || ext === '.dat')) {
+        abort('Invalid file format. Only .spr and .dat allowed');
+      } else {
+        return {type: ext.replace('.', ''), sign: getSignature(file) };
+      }
+    } else {
+      return false;
+    }
+  }
+};

lib/index.js

@@ -1,8 +1,9 @@
 {
   "name": "tibia-signature-extractor",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "Command Line Tool to extract signature from Tibia Spr or Dat files",
-  "bin": "index.js",
+  "bin": "bin/index.js",
+  "main": "lib/index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },