From 0cc35ad04f9c2997014d7cf62a12f697e79fb534 Mon Sep 17 00:00:00 2001
From: Arnur Nigmetov <a.nigmetov@gmail.com>
Date: Sat, 20 Jan 2018 19:11:29 +0100
Subject: Major rewrite, templatized version

---
 .../wasserstein/include/spdlog/sinks/syslog_sink.h | 81 ++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 geom_matching/wasserstein/include/spdlog/sinks/syslog_sink.h

(limited to 'geom_matching/wasserstein/include/spdlog/sinks/syslog_sink.h')

diff --git a/geom_matching/wasserstein/include/spdlog/sinks/syslog_sink.h b/geom_matching/wasserstein/include/spdlog/sinks/syslog_sink.h
new file mode 100644
index 0000000..0b509c4
--- /dev/null
+++ b/geom_matching/wasserstein/include/spdlog/sinks/syslog_sink.h
@@ -0,0 +1,81 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#include "spdlog/common.h"
+
+#ifdef SPDLOG_ENABLE_SYSLOG
+
+#include "spdlog/sinks/sink.h"
+#include "spdlog/details/log_msg.h"
+
+#include <array>
+#include <string>
+#include <syslog.h>
+
+
+namespace spdlog
+{
+namespace sinks
+{
+/**
+ * Sink that write to syslog using the `syscall()` library call.
+ *
+ * Locking is not needed, as `syslog()` itself is thread-safe.
+ */
+class syslog_sink : public sink
+{
+public:
+    //
+    syslog_sink(const std::string& ident = "", int syslog_option=0, int syslog_facility=LOG_USER):
+        _ident(ident)
+    {
+        _priorities[static_cast<int>(level::trace)] = LOG_DEBUG;
+        _priorities[static_cast<int>(level::debug)] = LOG_DEBUG;
+        _priorities[static_cast<int>(level::info)] = LOG_INFO;
+        _priorities[static_cast<int>(level::warn)] = LOG_WARNING;
+        _priorities[static_cast<int>(level::err)] = LOG_ERR;
+        _priorities[static_cast<int>(level::critical)] = LOG_CRIT;
+        _priorities[static_cast<int>(level::off)] = LOG_INFO;
+
+        //set ident to be program name if empty
+        ::openlog(_ident.empty()? nullptr:_ident.c_str(), syslog_option, syslog_facility);
+    }
+    ~syslog_sink()
+    {
+        ::closelog();
+    }
+
+    syslog_sink(const syslog_sink&) = delete;
+    syslog_sink& operator=(const syslog_sink&) = delete;
+
+    void log(const details::log_msg &msg) override
+    {
+        ::syslog(syslog_prio_from_level(msg), "%s", msg.raw.str().c_str());
+    }
+
+    void flush() override
+    {
+    }
+
+
+private:
+    std::array<int, 7> _priorities;
+    //must store the ident because the man says openlog might use the pointer as is and not a string copy
+    const std::string _ident;
+
+    //
+    // Simply maps spdlog's log level to syslog priority level.
+    //
+    int syslog_prio_from_level(const details::log_msg &msg) const
+    {
+        return _priorities[static_cast<int>(msg.level)];
+    }
+};
+}
+}
+
+#endif
-- 
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