From f20cd70a9afc28f785ef4a50c875ccf6c3729462 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sat, 20 Apr 2013 20:45:32 +0100
Subject: [PATCH] Import Ardour's LocaleGuard to fix problems with saving
 decimals to metadata (#119).

---
 ChangeLog       |  5 +++++
 src/lib/film.cc |  3 +++
 src/lib/util.cc | 19 +++++++++++++++++++
 src/lib/util.h  | 11 +++++++++++
 4 files changed, 38 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 85cdb48a6..0fbb73773 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-04-20  Carl Hetherington  <cth@carlh.net>
+
+	* Fix bad saving of metadata in locales which use
+	commas to separate decimals (#119).
+
 2013-04-19  Carl Hetherington  <cth@carlh.net>
 
 	* Add basic frame index and timecode to viewer, and previous/next
diff --git a/src/lib/film.cc b/src/lib/film.cc
index 227f8557b..b0785df34 100644
--- a/src/lib/film.cc
+++ b/src/lib/film.cc
@@ -204,6 +204,7 @@ string
 Film::video_state_identifier () const
 {
 	assert (format ());
+	LocaleGuard lg;
 
 	pair<string, string> f = Filter::ffmpeg_strings (filters());
 
@@ -428,6 +429,7 @@ void
 Film::write_metadata () const
 {
 	boost::mutex::scoped_lock lm (_state_mutex);
+	LocaleGuard lg;
 
 	boost::filesystem::create_directories (directory());
 
@@ -515,6 +517,7 @@ void
 Film::read_metadata ()
 {
 	boost::mutex::scoped_lock lm (_state_mutex);
+	LocaleGuard lg;
 
 	_external_audio.clear ();
 	_content_audio_streams.clear ();
diff --git a/src/lib/util.cc b/src/lib/util.cc
index 557e9a34b..e43b598ab 100644
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -1018,3 +1018,22 @@ FrameRateConversion::FrameRateConversion (float source, int dcp)
 		}
 	}
 }
+
+LocaleGuard::LocaleGuard ()
+	: _old (0)
+{
+	char const * old = setlocale (LC_NUMERIC, 0);
+
+        if (old) {
+                _old = strdup (old);
+                if (strcmp (_old, "POSIX")) {
+                        setlocale (LC_NUMERIC, "POSIX");
+                }
+        }
+}
+
+LocaleGuard::~LocaleGuard ()
+{
+	setlocale (LC_NUMERIC, _old);
+	free (_old);
+}
diff --git a/src/lib/util.h b/src/lib/util.h
index 3d251cf06..31d0fc967 100644
--- a/src/lib/util.h
+++ b/src/lib/util.h
@@ -293,5 +293,16 @@ extern int64_t video_frames_to_audio_frames (SourceFrame v, float audio_sample_r
 extern bool still_image_file (std::string);
 extern std::pair<std::string, int> cpu_info ();
 
+class LocaleGuard
+{
+public:
+	LocaleGuard ();
+	~LocaleGuard ();
+	
+private:
+	char* _old;
+};
+
+
 #endif
 
-- 
2.30.2