866e636e8c
With the application defined logging function, the actual logging is not performed by the library anymore, and the code belongs in the applications.
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2008 Jef Driesen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include "utils.h"
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static FILE* g_logfile = NULL;
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static unsigned char g_lastchar = '\n';
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#ifdef _WIN32
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#include <windows.h>
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static unsigned long g_timestamp;
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#else
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#include <sys/time.h>
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static struct timeval g_timestamp;
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#endif
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int message (const char* fmt, ...)
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{
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va_list ap;
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if (g_logfile) {
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if (g_lastchar == '\n') {
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#ifdef _WIN32
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unsigned long timestamp = GetTickCount () - g_timestamp;
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unsigned long sec = timestamp / 1000L, msec = timestamp % 1000L;
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fprintf (g_logfile, "[%li.%03li] ", sec, msec);
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#else
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struct timeval now, timestamp;
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gettimeofday (&now, NULL);
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timersub (&now, &g_timestamp, ×tamp);
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fprintf (g_logfile, "[%lli.%06lli] ", (long long)timestamp.tv_sec, (long long)timestamp.tv_usec);
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#endif
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}
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size_t len = strlen (fmt);
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if (len > 0)
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g_lastchar = fmt[len - 1];
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else
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g_lastchar = 0;
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va_start (ap, fmt);
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vfprintf (g_logfile, fmt, ap);
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va_end (ap);
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}
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va_start (ap, fmt);
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int rc = vfprintf (stderr, fmt, ap);
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va_end (ap);
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return rc;
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}
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void message_set_logfile (const char* filename)
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{
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if (g_logfile) {
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fclose (g_logfile);
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g_logfile = NULL;
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}
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if (filename)
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g_logfile = fopen (filename, "w");
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if (g_logfile) {
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g_lastchar = '\n';
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#ifdef _WIN32
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g_timestamp = GetTickCount ();
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#else
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gettimeofday (&g_timestamp, NULL);
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#endif
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}
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}
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