First commit

hGameTest/node_modules/haxe/lib/cache.js

@@ -0,0 +1,61 @@
+var os = require('os');
+var fs = require('fs');
+var fsx = require('fs-extra')
+var Download = require('download');
+var downloadStatus = require('download-status');
+var crypto = require('crypto');
+
+var cacheFolder = os.homedir() + '/.haxe_cache';
+if(!fs.existsSync(cacheFolder)){
+    fs.mkdirSync(cacheFolder);
+}
+
+var getHash = function ( data ) {
+     var generator = crypto.createHash('sha1');
+     generator.update( data )
+     return generator.digest('hex')
+}
+
+function Cache(){
+
+    this.download = function(url, targetFolder, callback){
+        console.log(url);
+        var hash = getHash(url);
+        var ref = this;
+        if(fs.existsSync(cacheFolder + '/' + hash)){
+            console.log("using cached version");
+            ref.extract(hash,targetFolder,callback);
+        } else {
+            console.log("Downloading...")
+            Download(url,cacheFolder + '/' + hash,{ extract: true, strip: 1 })
+            .then(() => {
+                console.log('done!');
+                ref.extract(hash,targetFolder,callback);
+            })
+            .catch((err) => {
+                console.error(err + " : Unable to download or extract " + url);
+                callback(err);
+            });
+            /*Download({ extract: true, strip: 1 })
+                .get( url )
+                .dest( cacheFolder + '/' + hash )
+                .use(downloadStatus())
+                .run( function(err,files){
+                    if( err ) {
+                        console.error("Unable to download or extract " + url);
+                        callback(err);
+                    }
+                    ref.extract(hash,targetFolder,callback);
+            });*/
+    	}
+    }
+
+    this.extract = function(hash, targetFolder, callback){
+        var url = cacheFolder + '/' + hash;
+        fsx.copySync(url, targetFolder);
+        callback();
+    }
+}
+
+
+module.exports = Cache;