ICE-5658 - NPM support for IceJS distribution

1 files changed, 135 insertions, 0 deletions

diff --git a/distribution/src/js/npm/installSlice2js.js b/distribution/src/js/npm/installSlice2js.js
new file mode 100644
index 00000000000..9c76feb21f8
--- /dev/null
+++ b/distribution/src/js/npm/installSlice2js.js
@@ -0,0 +1,135 @@
+// **********************************************************************
+// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in th
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+var execFile  = require('child_process').execFile;
+var fs        = require('fs');
+var http      = require('http');
+var os        = require('os');
+var path      = require('path');
+var url       = require('url');
+var util      = require('util');
+var zlib      = require('zlib');
+var platform  = os.platform();
+var arch      = os.arch();
+
+var BIN_DIR   = path.join(__dirname, 'bin');
+var slice2js  = platform === 'win32' ? 'slice2js.exe' : 'slice2js';
+slice2js      = path.join(BIN_DIR, slice2js);
+
+var pkgVer    = require('./package.json').slice2js;
+
+function downloadSlice2js(redirectUrl)
+{
+  if(fs.existsSync(slice2js))
+  {
+    fs.unlinkSync(slice2js);
+  }
+
+  var SLICE2JS_URL = redirectUrl ||
+                     process.env.SLICE2JS_URL ||
+                     process.env.npm_config_SLICE2JS_URL ||
+                     'http://zeroc.com/download/3.6/';
+
+  var dlPath =
+  {
+    'darwin' :
+    {
+      'x64' : util.format('slice2js-%s-osx.gz', pkgVer)
+    },
+    'linux':
+    {
+      'x64' : util.format('slice2js-%s-linux-%s.gz', pkgVer, arch),
+      'x86' : util.format('slice2js-%s-linux-%s.gz', pkgVer, arch)
+    },
+    'win32':
+    {
+      'x64' : util.format('slice2js-%s-win-%s.exe.gz', pkgVer, arch),
+      'x86' : util.format('slice2js-%s-win-%s.exe.gz', pkgVer, arch)
+    }
+  };
+
+  var slice2js_url = url.resolve(SLICE2JS_URL, dlPath[platform][arch]);
+  console.log('Downloading slice2js from: ' + slice2js_url);
+  var req = http.get(slice2js_url,
+    function(res)
+    {
+      if(res.statusCode !== 200)
+      {
+        if(res.statusCode === 302 && !redirectUrl)
+        {
+          return downloadSlice2js(res.headers.location);
+        }
+        else if (res.statusCode === 404)
+        {
+          console.log('Unable to find slice2js at %s. Proceeding without it.', SLICE2JS_URL);
+          process.exit(0);
+        }
+        else
+        {
+          consle.log('There was an error downloading slice2js.');
+          process.exit(0);
+        }
+      }
+
+      var progress = 0;
+      var dlStream = fs.createWriteStream(slice2js + '.gz');
+      res.pipe(dlStream);
+
+      res.on('end',
+        function()
+        {
+          console.log('Slice2js downloaded.');
+          dlStream.end();
+
+          var zipSteam = fs.createReadStream(slice2js+'.gz');
+          var fileStream = fs.createWriteStream(slice2js, {flags : 'w', mode: 33261});
+          zipSteam.pipe(zlib.createGunzip()).pipe(fileStream);
+          fileStream.on('close',
+            function()
+            {
+              fs.unlinkSync(slice2js+'.gz');
+            });
+        });
+    });
+
+  req.on('error',
+    function(err)
+    {
+      console.log('There was an error retrieving slice2js. ' + err.message);
+    });
+}
+
+if(fs.existsSync(slice2js) === true)
+{
+
+  execFile(slice2js, ['--version'],
+    function(err, stdout, stderr)
+    {
+      if (err)
+      {
+        return downloadSlice2js();
+      }
+
+      var version = stdout.trim() || stderr.trim();
+      if(version === pkgVer)
+      {
+        return;
+      }
+      else
+      {
+        downloadSlice2js();
+      }
+    });
+}
+else
+{
+  downloadSlice2js();
+}
+
+module.exports.path = slice2js;
+module.exports.version = pkgVer;