From 09a188bfd9987587112e239a06740ca0ca1c9914 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 22 Feb 2016 13:14:19 +0100
Subject: [PATCH] input/InputStream: add method Skip()

---
 src/input/InputStream.cxx | 7 +++++++
 src/input/InputStream.hxx | 9 +++++++++
 2 files changed, 16 insertions(+)

diff --git a/src/input/InputStream.cxx b/src/input/InputStream.cxx
index bd593bc29..8ea3ef560 100644
--- a/src/input/InputStream.cxx
+++ b/src/input/InputStream.cxx
@@ -100,6 +100,13 @@ InputStream::LockSeek(offset_type _offset, Error &error)
 	return Seek(_offset, error);
 }
 
+bool
+InputStream::LockSkip(offset_type _offset, Error &error)
+{
+	const ScopeLock protect(mutex);
+	return Skip(_offset, error);
+}
+
 Tag *
 InputStream::ReadTag()
 {
diff --git a/src/input/InputStream.hxx b/src/input/InputStream.hxx
index 458947eb4..af010e2e1 100644
--- a/src/input/InputStream.hxx
+++ b/src/input/InputStream.hxx
@@ -294,6 +294,15 @@ public:
 		return LockSeek(0, error);
 	}
 
+	/**
+	 * Skip input bytes.
+	 */
+	bool Skip(offset_type _offset, Error &error) {
+		return Seek(GetOffset() + _offset, error);
+	}
+
+	bool LockSkip(offset_type _offset, Error &error);
+
 	/**
 	 * Returns true if the stream has reached end-of-file.
 	 *