cdb

lib/assets/javascripts/cdb/scripts/check_size.js

@@ -0,0 +1,24 @@
+/*
+ * this utility reports the size of a layergroup compressed
+ * usage:
+ *  node check_size.js layergroup.json
+ */
+
+var lzma = require("lzma").LZMA();
+var fs = require('fs');
+function _array2hex (byteArr) {
+  var encoded = [];
+  for(var i = 0; i < byteArr.length; ++i) {
+    encoded.push(String.fromCharCode(byteArr[i] + 128));
+  }
+  buffer = new Buffer(encoded.join(''), 'binary');
+  return buffer.toString('base64');
+}
+
+var str = fs.readFileSync(process.argv[2]);
+lzma.compress(str, 1, function(result) {
+  console.log("size (raw/compressed/base64 compressed): ", str.length, "/", result.length, "/", _array2hex(result).length);
+});
+
+
+