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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
// -=- Logger.cxx - support for the Logger and LogWriter classes
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#ifdef WIN32
#define strcasecmp _stricmp
#define vsnprintf _vsnprintf
#define HAVE_VSNPRINTF
#endif
#include <rfb/Logger.h>
#include <rfb/LogWriter.h>
#include <rfb/util.h>
#include <rfb/Threading.h>
using namespace rfb;
#ifndef HAVE_VSNPRINTF
#ifdef __RFB_THREADING_IMPL
static Mutex fpLock;
#endif
static FILE* fp = 0;
int vsnprintf(char *str, size_t n, const char *format, va_list ap)
{
va_list ap_new;
int len, written;
str[0] = 0;
if (!fp) {
// Safely create a FILE* for /dev/null if there isn't already one
#ifdef __RFB_THREADING_IMPL
Lock l(fpLock);
#endif
if (!fp)
fp = fopen("/dev/null","w");
if (!fp) return 0;
}
va_copy(ap_new, ap);
len = vfprintf(fp, format, ap_new);
va_end(ap_new);
if (len <= 0) return 0;
CharArray s(len+1);
vsprintf(s.buf, format, ap);
written = __rfbmin(len, (int)n-1);
memcpy(str, s.buf, written);
str[written] = '\0';
return len;
}
#endif
Logger* Logger::loggers = 0;
Logger::Logger(const char* name) : registered(false), m_name(name), m_next(0) {
}
Logger::~Logger() {
// *** Should remove this logger here!
}
void Logger::write(int level, const char *logname, const char* format,
va_list ap)
{
// - Format the supplied data, and pass it to the
// actual log_message function
// The log level is included as a hint for loggers capable of representing
// different log levels in some way.
char buf1[4096];
vsnprintf(buf1, sizeof(buf1)-1, format, ap);
buf1[sizeof(buf1)-1] = 0;
write(level, logname, buf1);
}
void
Logger::registerLogger() {
if (!registered) {
registered = true;
m_next = loggers;
loggers=this;
}
}
Logger*
Logger::getLogger(const char* name) {
Logger* current = loggers;
while (current) {
if (strcasecmp(name, current->m_name) == 0) return current;
current = current->m_next;
}
return 0;
}
void
Logger::listLoggers() {
Logger* current = loggers;
while (current) {
printf(" %s\n", current->m_name);
current = current->m_next;
}
}
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