/*
 *  log4cpp.cpp
 *
 *  Created by Bob Polis on 05-07-2007.
 *  Copyright 2007 Thalictrum. All rights reserved.
 */

#include "log4cpp.hpp"

// UNIX
#include <unistd.h>
#include <pthread.h>
#include <sys/time.h>

// C++ Standard Library
#include <cstdio>
#include <cstdarg>
#include <cstdlib>
#include <iostream>
#include <sstream>
#include <vector>
#include <mutex>

using namespace std;

stringstream glog;
pthread_mutex_t log4cpp_lock = PTHREAD_MUTEX_INITIALIZER;
mutex m;

void print_timestamp()
{
	struct timeval secs;
	(void)gettimeofday(&secs, NULL);
	time_t now = time(NULL);
	char dtstamp[32];
	strftime(dtstamp, 32, "%F %T", localtime(&now));
	long millisecs = (long)((double)secs.tv_usec / 1000.0 + 0.5) % 1000;
#if __APPLE__
	fprintf(stderr, "%s.%03ld %s[%ld] ", dtstamp, millisecs, getprogname(), (long)getpid());
#elif __linux__
	fprintf(stderr, "%s.%03ld %s[%ld] ", dtstamp, millisecs, program_invocation_name, (long)getpid());
#endif
}

void __slog(const char* func, const char* file, int line, stringstream& ss)
{
	::pthread_mutex_lock(&log4cpp_lock);
	print_timestamp();
	string f(file);
	cerr << "(" << f.substr(f.rfind('/') + 1) << ":" << line << ") " << func << "(): " << ss.str() << endl;
	ss.str("");
	::pthread_mutex_unlock(&log4cpp_lock);
}

void _dlog(const char* func, const char* file, int line, const char* fmt, ...) {
	lock_guard<mutex> lock {m};
	print_timestamp();
	string f {file};
	va_list args1;
	va_start(args1, fmt);
	va_list args2;
	va_copy(args2, args1);
	vector<char> buf(1 + vsnprintf(nullptr, 0, fmt, args1));
	va_end(args1);
	vsnprintf(buf.data(), buf.size(), fmt, args2);
	va_end(args2);
	cerr << "(" << f.substr(f.rfind('/') + 1) << ":" << line << ") " << func << "(): " << buf.data() << endl;
}