The public header files are moved to a new subdirectory, to separate the definition of the public interface from the actual implementation. Using an identical directory layout as the final installation has the advantage that the example code can be build outside the project tree without any modifications to the #include statements.
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 <libdivecomputer/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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