First commit.

src/Lv2Log.cpp

@@ -0,0 +1,95 @@
+#include "pch.h"
+#include "Lv2Log.hpp"
+#include <iostream>
+#include <chrono>
+#include <iomanip>
+
+using namespace pipedal;
+
+#include <mutex>
+
+
+
+
+static auto timeZero = std::chrono::system_clock::now();
+
+std::string timeTag()
+{
+    using namespace std::chrono;
+
+    auto t = std::chrono::system_clock::now()- timeZero;
+
+
+    auto hours_ = duration_cast<hours>(t).count() % 24;
+    auto minutes_ = duration_cast<minutes>(t).count() % 60;
+    auto seconds_ = duration_cast<seconds>(t).count() % 60;
+    auto milliseconds_ = duration_cast<milliseconds>(t).count() % 1000;
+
+    std::stringstream s;
+
+    using namespace std;
+    s << setfill('0') << setw(2) << hours_ << ':' << setw(2) << minutes_ << ':' << setw(2) << seconds_ << "." << setw(3) << milliseconds_;
+    return s.str();
+    
+}
+class StdErrLogger : public Lv2Logger
+{
+    std::mutex m;
+
+    
+    public : virtual ~StdErrLogger() {}
+
+    virtual void onError(const char* message)
+    {
+        std::lock_guard lock(m);
+        std::cerr << timeTag() << " ERR: " << message << std::endl;
+    }
+    virtual void onWarning(const char* message)
+    {
+        std::lock_guard lock(m);
+        std::cerr  << timeTag() << " WRN: " << message << std::endl;
+    }
+
+    virtual void onDebug(const char* message)
+    {
+        std::lock_guard lock(m);
+        std::cerr  << timeTag() << " DBG: " << message << std::endl;
+    }
+    virtual void onInfo(const char* message)
+    {
+        std::lock_guard lock(m);
+        std::cerr  << timeTag()  << " INF: " << message << std::endl;
+    }
+};
+
+Lv2Logger *Lv2Log::logger_ = new StdErrLogger();
+
+LogLevel Lv2Log::log_level_ = LogLevel::Debug;
+
+void Lv2Log::v_error(const char *format, va_list arglist)
+{
+    char buffer[512];
+    vsnprintf(buffer,sizeof(buffer),format,arglist);
+    logger_->onError(buffer);
+}
+void Lv2Log::v_warning(const char *format, va_list arglist)
+{
+    char buffer[512];
+    vsnprintf(buffer,sizeof(buffer),format,arglist);
+    logger_->onWarning(buffer);
+}
+void Lv2Log::v_debug(const char *format, va_list arglist)
+{
+    char buffer[512];
+    vsnprintf(buffer,sizeof(buffer),format,arglist);
+    logger_->onDebug(buffer);
+}
+void Lv2Log::v_info(const char *format, va_list arglist)
+{
+    char buffer[512];
+    vsnprintf(buffer,sizeof(buffer),format,arglist);
+    logger_->onInfo(buffer);
+
+}
+
+