From cfdf2a93f27c93004d4ee4a7dfbd20b12b4ea06f Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Tue, 17 Apr 2012 22:14:46 +0200
Subject: [PATCH] Generic operator<< for std::vector, std::pair and custom
 types providing "streamify()"

---
 src/common/ostream_operators.h | 54 ++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 src/common/ostream_operators.h

diff --git a/src/common/ostream_operators.h b/src/common/ostream_operators.h
new file mode 100644
index 000000000..fb1ec9e95
--- /dev/null
+++ b/src/common/ostream_operators.h
@@ -0,0 +1,54 @@
+/*
+   mkvmerge -- utility for splicing together matroska files
+   from component media subtypes
+
+   Distributed under the GPL
+   see the file COPYING for details
+   or visit http://www.gnu.org/copyleft/gpl.html
+
+   generic "operator <<()" for standard types
+
+   Written by Moritz Bunkus <moritz@bunkus.org>.
+*/
+
+#ifndef MTX_COMMON_OSTREAM_OPERATORS_H
+#define MTX_COMMON_OSTREAM_OPERATORS_H
+
+namespace std {
+
+template<typename CharT, typename TraitsT, typename ContT>
+std::basic_ostream<CharT, TraitsT> &
+operator <<(std::basic_ostream<CharT, TraitsT> &out,
+            std::vector<ContT> const &vec) {
+  out << "<";
+  bool first = true;
+  for (auto element : vec) {
+    if (first)
+      first = false;
+    else
+      out << ",";
+    out << element;
+  }
+  out << ">";
+
+  return out;
+}
+
+template<typename CharT, typename TraitsT, typename PairT1, typename PairT2>
+std::basic_ostream<CharT, TraitsT> &
+operator <<(std::basic_ostream<CharT, TraitsT> &out,
+            std::pair<PairT1, PairT2> const &p) {
+  out << "(" << p.first << "/" << p.second << ")";
+  return out;
+}
+
+template<typename CharT, typename TraitsT, typename ElementT>
+std::basic_ostream<CharT, TraitsT> &
+operator <<(std::basic_ostream<CharT, TraitsT> &out,
+            ElementT const &e) {
+  return e.streamify(out);
+}
+
+}
+
+#endif  // MTX_COMMON_OSTREAM_OPERATORS_H