Imported Upstream version 2.1.8.20120216upstream/2.1.8.20120216

1 files changed, 176 insertions, 0 deletions

diff --git a/clog.c b/clog.c
new file mode 100644
index 0000000..4999291
--- /dev/null
+++ b/clog.c
@@ -0,0 +1,176 @@
+#include "stdafx.h"
+#include "clog.h"
+
+static FILE *logFile = NULL;
+static CPhidgetLog_level logging_level = 0;
+
+/* Protects logFile, logging_level - thread safe */
+int logLockInitialized = PFALSE;
+CThread_mutex_t logLock;
+
+static const char *
+logLevelToStr(CPhidgetLog_level l)
+{
+	switch (l) {
+	case PHIDGET_LOG_CRITICAL:
+		return "CRIT";
+	case PHIDGET_LOG_ERROR:
+		return "ERR";
+	case PHIDGET_LOG_WARNING:
+		return "WARN";
+	case PHIDGET_LOG_DEBUG:
+		return "DEBUG";
+	case PHIDGET_LOG_INFO:
+		return "INFO";
+	case PHIDGET_LOG_VERBOSE:
+		return "VERBOSE";
+	}
+	return "???";
+}
+
+PHIDGET21_API int CCONV CPhidget_enableLogging(CPhidgetLog_level level, const char *outputFile)
+{	
+	if(!logLockInitialized)
+	{
+		CThread_mutex_init(&logLock);
+		logLockInitialized = PTRUE;
+	}
+	CThread_mutex_lock(&logLock);
+	logging_level = level;
+	if(outputFile == NULL)
+		logFile = NULL;
+	else
+	{
+		logFile = fopen(outputFile,"a");
+#ifndef _WINDOWS
+		if(!logFile)
+		{
+			CThread_mutex_unlock(&logLock);
+			switch(errno)
+			{
+				case EACCES:
+					LOG(PHIDGET_LOG_WARNING, "Permission denied for specified logfile. Logging to stdout.");
+					break;
+				defualt:
+					LOG(PHIDGET_LOG_WARNING, "Logfile fopen failed with code: %d",errno);
+			}
+			CThread_mutex_lock(&logLock);
+		}
+#endif
+	}
+	CThread_mutex_unlock(&logLock);
+	LOG(PHIDGET_LOG_INFO, "Enabling logging");
+	return EPHIDGET_OK;
+}
+
+PHIDGET21_API int CCONV CPhidget_disableLogging()
+{
+	if(!logLockInitialized)
+	{
+		CThread_mutex_init(&logLock);
+		logLockInitialized = PTRUE;
+	}
+	LOG(PHIDGET_LOG_INFO, "Disabling logging");
+	CThread_mutex_lock(&logLock);
+	if(logFile!=NULL && logFile!=stdout && logFile!=stderr)
+		fclose(logFile);
+	logFile = NULL;
+	logging_level = 0;
+	CThread_mutex_unlock(&logLock);
+	return EPHIDGET_OK;
+}
+
+//if outputting to a file, it is designed to be CSV compliant
+//only print out debug logs in debug library
+PHIDGET21_API int CCONV CPhidget_log(CPhidgetLog_level level, const char *msg, const char *fmt, ...)
+{
+	size_t threadID = 0;
+	int logToStderr = (int)level & LOG_TO_STDERR;
+	va_list va;
+	level = level & 0xFF;
+#ifdef DEBUG
+	if(level <= logging_level || level == PHIDGET_LOG_DEBUG || logToStderr)
+#else
+	if((level <= logging_level && level != PHIDGET_LOG_DEBUG) || logToStderr)
+#endif
+	{
+		if(!logLockInitialized)
+		{
+			CThread_mutex_init(&logLock);
+			logLockInitialized = PTRUE;
+		}
+		CThread_mutex_lock(&logLock);
+		if (!logFile)
+			logFile = stdout;
+#ifdef WINCE
+		if(logToStderr)
+			fprintf(stderr, "%s: ",logLevelToStr(level));
+		else if(logFile==stdout)
+			fprintf(logFile, "%s: ",logLevelToStr(level));
+		else
+			fprintf(logFile, "%d,\"%s\",%s,\"", threadID, msg, logLevelToStr(level));
+		va_start(va, fmt);
+		if(logToStderr)
+		{
+			vfprintf(stderr, fmt, va);
+			va_end(va);
+			fprintf(stderr, "\n");
+			fflush(stderr);
+		}
+		else
+		{
+			vfprintf(logFile, fmt, va);
+			va_end(va);
+			if(logFile==stdout)
+				fprintf(logFile, "\n");
+			else
+				fprintf(logFile, "\"\n");
+			fflush(logFile);
+		}
+#else //!WINCE
+		{
+			char date[50];
+			struct tm *tmp;
+			time_t t;
+			time(&t);
+ #ifndef _WINDOWS
+			struct tm tm;
+			localtime_r(&t, &tm);
+			tmp = &tm;
+			threadID = (size_t)pthread_self();
+ #else
+			tmp = localtime(&t);
+			threadID = (size_t)GetCurrentThreadId();
+ #endif
+			if (!strftime(date, sizeof (date), "%c", tmp))
+				strncpy(date, "?", sizeof (date));
+			if(logToStderr)
+				fprintf(stderr, "%s: ",logLevelToStr(level));
+			else if(logFile==stdout)
+				fprintf(logFile, "%s: ",logLevelToStr(level));
+			else
+				fprintf(logFile, "%s,%d,\"%s\",%s,\"", date, (int)threadID, msg, logLevelToStr(level));
+			va_start(va, fmt);
+			if(logToStderr)
+			{
+				vfprintf(stderr, fmt, va);
+				va_end(va);
+				fprintf(stderr, "\n");
+				fflush(stderr);
+			}
+			else
+			{
+				vfprintf(logFile, fmt, va);
+				va_end(va);
+				if(logFile==stdout)
+					fprintf(logFile, "\n");
+				else
+					fprintf(logFile, "\"\n");
+				fflush(logFile);
+			}
+		}
+#endif
+		CThread_mutex_unlock(&logLock);
+	}
+	return EPHIDGET_OK;
+}