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+/************************************************************************************
+
+Filename : OVR_Log.cpp
+Content : Logging support
+Created : September 19, 2012
+Notes :
+
+Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License");
+you may not use the Oculus VR Rift SDK except in compliance with the License,
+which is provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "OVR_Log.h"
+#include "OVR_Std.h"
+#include <stdarg.h>
+#include <stdio.h>
+
+#if defined(OVR_OS_WIN32)
+#include <windows.h>
+#elif defined(OVR_OS_ANDROID)
+#include <android/log.h>
+#endif
+
+namespace OVR {
+
+// Global Log pointer.
+Log* volatile OVR_GlobalLog = 0;
+
+//-----------------------------------------------------------------------------------
+// ***** Log Implementation
+
+Log::~Log()
+{
+ // Clear out global log
+ if (this == OVR_GlobalLog)
+ {
+ // TBD: perhaps we should ASSERT if this happens before system shutdown?
+ OVR_GlobalLog = 0;
+ }
+}
+
+void Log::LogMessageVarg(LogMessageType messageType, const char* fmt, va_list argList)
+{
+ if ((messageType & LoggingMask) == 0)
+ return;
+#ifndef OVR_BUILD_DEBUG
+ if (IsDebugMessage(messageType))
+ return;
+#endif
+
+ char buffer[MaxLogBufferMessageSize];
+ FormatLog(buffer, MaxLogBufferMessageSize, messageType, fmt, argList);
+ DefaultLogOutput(buffer, IsDebugMessage(messageType));
+}
+
+void OVR::Log::LogMessage(LogMessageType messageType, const char* pfmt, ...)
+{
+ va_list argList;
+ va_start(argList, pfmt);
+ LogMessageVarg(messageType, pfmt, argList);
+ va_end(argList);
+}
+
+
+void Log::FormatLog(char* buffer, unsigned bufferSize, LogMessageType messageType,
+ const char* fmt, va_list argList)
+{
+ bool addNewline = true;
+
+ switch(messageType)
+ {
+ case Log_Error: OVR_strcpy(buffer, bufferSize, "Error: "); break;
+ case Log_Debug: OVR_strcpy(buffer, bufferSize, "Debug: "); break;
+ case Log_Assert: OVR_strcpy(buffer, bufferSize, "Assert: "); break;
+ case Log_Text: buffer[0] = 0; addNewline = false; break;
+ case Log_DebugText: buffer[0] = 0; addNewline = false; break;
+ default:
+ buffer[0] = 0;
+ addNewline = false;
+ break;
+ }
+
+ UPInt prefixLength = OVR_strlen(buffer);
+ char *buffer2 = buffer + prefixLength;
+ OVR_vsprintf(buffer2, bufferSize - prefixLength, fmt, argList);
+
+ if (addNewline)
+ OVR_strcat(buffer, bufferSize, "\n");
+}
+
+
+void Log::DefaultLogOutput(const char* formattedText, bool debug)
+{
+
+#if defined(OVR_OS_WIN32)
+ // Under Win32, output regular messages to console if it exists; debug window otherwise.
+ static DWORD dummyMode;
+ static bool hasConsole = (GetStdHandle(STD_OUTPUT_HANDLE) != INVALID_HANDLE_VALUE) &&
+ (GetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE), &dummyMode));
+
+ if (!hasConsole || debug)
+ {
+ ::OutputDebugStringA(formattedText);
+ }
+ else
+ {
+ fputs(formattedText, stdout);
+ }
+
+#elif defined(OVR_OS_ANDROID)
+ __android_log_write(ANDROID_LOG_INFO, "OVR", formattedText);
+
+#else
+ fputs(formattedText, stdout);
+
+#endif
+
+ // Just in case.
+ OVR_UNUSED2(formattedText, debug);
+}
+
+
+//static
+void Log::SetGlobalLog(Log *log)
+{
+ OVR_GlobalLog = log;
+}
+//static
+Log* Log::GetGlobalLog()
+{
+// No global log by default?
+// if (!OVR_GlobalLog)
+// OVR_GlobalLog = GetDefaultLog();
+ return OVR_GlobalLog;
+}
+
+//static
+Log* Log::GetDefaultLog()
+{
+ // Create default log pointer statically so that it can be used
+ // even during startup.
+ static Log defaultLog;
+ return &defaultLog;
+}
+
+
+//-----------------------------------------------------------------------------------
+// ***** Global Logging functions
+
+#define OVR_LOG_FUNCTION_IMPL(Name) \
+ void Log##Name(const char* fmt, ...) \
+ { \
+ if (OVR_GlobalLog) \
+ { \
+ va_list argList; va_start(argList, fmt); \
+ OVR_GlobalLog->LogMessageVarg(Log_##Name, fmt, argList); \
+ va_end(argList); \
+ } \
+ }
+
+OVR_LOG_FUNCTION_IMPL(Text)
+OVR_LOG_FUNCTION_IMPL(Error)
+
+#ifdef OVR_BUILD_DEBUG
+OVR_LOG_FUNCTION_IMPL(DebugText)
+OVR_LOG_FUNCTION_IMPL(Debug)
+OVR_LOG_FUNCTION_IMPL(Assert)
+#endif
+
+} // OVR