fix:convert cgbi to pngs

doc:http://iphonedevwiki.net/index.php/CgBI_file_format

Author: dos1in

lib/IpaReader.js

@@ -2,6 +2,7 @@
 const Reader = require('./Reader');
 const utils = require('./utils');
 const plist = require('./plistParser');
+const cgbiToPng = require('cgbi-to-png');
 
 const PLIST_REG = new RegExp(/payload\/.+?\.app\/info.plist$/, 'i');
 const PROVISION_REG = /payload\/.+?\.app\/embedded.mobileprovision/;
@@ -57,7 +58,8 @@ class IpaReader extends Reader {
 
         return that.getEntry(new RegExp(iconPath.toLowerCase()), (error, icon) => {
           if (error) return callback(error);
-          plistInfo.icon = 'data:image/png;base64,' + icon.toString('base64');
+          const pngBuffer = cgbiToPng.revert(icon);
+          plistInfo.icon = 'data:image/png;base64,' + pngBuffer.toString('base64');
           callback(null, plistInfo);
         });
       }

lib/utils.js

@@ -184,8 +184,7 @@ function findOutIcon(pkgInfo, extension) {
     if (pkgInfo.CFBundleIcons && pkgInfo.CFBundleIcons.CFBundlePrimaryIcon
       && pkgInfo.CFBundleIcons.CFBundlePrimaryIcon.CFBundleIconFiles &&
       pkgInfo.CFBundleIcons.CFBundlePrimaryIcon.CFBundleIconFiles.length) {
-      // It's an array...just try the last one
-      return pkgInfo.CFBundleIcons.CFBundlePrimaryIcon.CFBundleIconFiles[pkgInfo.CFBundleIcons.CFBundlePrimaryIcon.CFBundleIconFiles.length - 1];
+      return pkgInfo.CFBundleIcons.CFBundlePrimaryIcon.CFBundleIconFiles.slice(-1)[0];
     }
     // Maybe there is a default one
     return '.app/Icon.png';