Factor out log from Patchage class

Towards saner dependencies.

1 files changed, 41 insertions, 0 deletions

diff --git a/src/ILog.hpp b/src/ILog.hpp
new file mode 100644
index 0000000..a71fda2
--- /dev/null
+++ b/src/ILog.hpp
@@ -0,0 +1,41 @@
+/* This file is part of Patchage.
+ * Copyright 2007-2020 David Robillard <d@drobilla.net>
+ *
+ * Patchage is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * Patchage is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Patchage.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PATCHAGE_ILOG_HPP
+#define PATCHAGE_ILOG_HPP
+
+#include <string>
+
+/// Interface for writing log messages
+class ILog
+{
+public:
+	ILog() = default;
+
+	ILog(const ILog&) = default;
+	ILog& operator=(const ILog&) = default;
+
+	ILog(ILog&&)  = default;
+	ILog& operator=(ILog&&) = default;
+
+	virtual ~ILog() = default;
+
+	virtual void info_msg(const std::string& msg)    = 0;
+	virtual void warning_msg(const std::string& msg) = 0;
+	virtual void error_msg(const std::string& msg)   = 0;
+};
+
+#endif // PATCHAGE_ILOG_HPP