first commit

build/node_modules/read-chunk/index.js

@@ -0,0 +1,43 @@
+'use strict';
+var fs = require('fs');
+
+module.exports = function (filepath, pos, len, cb) {
+	var buf = new Buffer(len);
+
+	fs.open(filepath, 'r', function (err, fd) {
+		if (err) {
+			return cb(err);
+		}
+
+		fs.read(fd, buf, 0, len, pos, function (err, bytesRead, buf) {
+			if (err) {
+				return cb(err);
+			}
+
+			fs.close(fd, function (err) {
+				if (err) {
+					return cb(err);
+				}
+
+				if (bytesRead < len) {
+					buf = buf.slice(0, bytesRead);
+				}
+
+				cb(null, buf);
+			});
+		});
+	});
+};
+
+module.exports.sync = function (filepath, pos, len) {
+	var buf = new Buffer(len);
+	var fd = fs.openSync(filepath, 'r');
+	var bytesRead = fs.readSync(fd, buf, 0, len, pos);
+	fs.closeSync(fd);
+
+	if (bytesRead < len) {
+		buf = buf.slice(0, bytesRead);
+	}
+
+	return buf;
+};