Implement LV2 log extension as host

Only print color logs if output is a terminal.

2 files changed, 22 insertions, 1 deletions

diff --git a/ingen/Log.hpp b/ingen/Log.hpp
index 6c88e9a4..a868e714 100644
--- a/ingen/Log.hpp
+++ b/ingen/Log.hpp
@@ -1,6 +1,6 @@
 /*
   This file is part of Ingen.
-  Copyright 2007-2015 David Robillard <http://drobilla.net/>
+  Copyright 2007-2016 David Robillard <http://drobilla.net/>
 
   Ingen is free software: you can redistribute it and/or modify it under the
   terms of the GNU Affero General Public License as published by the Free
@@ -21,6 +21,7 @@
 
 #include <boost/format.hpp>
 
+#include "ingen/LV2Features.hpp"
 #include "ingen/ingen.h"
 #include "lv2/lv2plug.in/ns/ext/log/log.h"
 
@@ -34,20 +35,39 @@ class INGEN_API Log {
 public:
 	Log(LV2_Log_Log* log, URIs& uris);
 
+	struct Feature : public LV2Features::Feature {
+		const char* uri() const { return LV2_LOG__log; }
+
+		SPtr<LV2_Feature> feature(World* world, Node* block);
+
+		struct Handle {
+			LV2_Log_Log lv2_log;
+			Log*        log;
+			Node*       node;
+		};
+	};
+
 	void error(const std::string& msg);
 	void info(const std::string& msg);
 	void warn(const std::string& msg);
+	void trace(const std::string& msg);
 
 	inline void error(const fmt& fmt) { error(fmt.str()); }
 	inline void info(const fmt& fmt)  { info(fmt.str()); }
 	inline void warn(const fmt& fmt)  { warn(fmt.str()); }
 
+	int vtprintf(LV2_URID type, const char* fmt, va_list args);
+
 	void set_flush(bool f) { _flush = f; }
+	void set_trace(bool f) { _trace = f; }
 
 private:
+	void print(FILE* stream, const std::string& msg);
+
 	LV2_Log_Log* _log;
 	URIs&        _uris;
 	bool         _flush;
+	bool         _trace;
 };
 
 }  // namespace Ingen
diff --git a/ingen/URIs.hpp b/ingen/URIs.hpp
index 52921085..9fc771da 100644
--- a/ingen/URIs.hpp
+++ b/ingen/URIs.hpp
@@ -127,6 +127,7 @@ public:
 	const Quark ingen_value;
 	const Quark log_Error;
 	const Quark log_Note;
+	const Quark log_Trace;
 	const Quark log_Warning;
 	const Quark lv2_AudioPort;
 	const Quark lv2_CVPort;