[/trunk] Changeset 254 by mikael
* Use ISO8601 for time format in log file
* Update TODO
/*
* utils.c -- Various utility functions
*
* Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net>
* ut_* functions are derived from Cabber debug/log code.
* from_iso8601() comes from the Gaim project.
*
* This program 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 program 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <time.h>
#include <config.h>
static int DebugEnabled;
static char *FName;
void ut_InitDebug(unsigned int level, char *filename)
{
FILE *fp;
if (!level) {
DebugEnabled = 0;
FName = NULL;
return;
}
if (filename)
FName = strdup(filename);
else {
FName = getenv("HOME");
if (!FName)
FName = "/tmp/mcabberlog";
else {
char *tmpname = malloc(strlen(FName) + 12);
strcpy(tmpname, FName);
strcat(tmpname, "/mcabberlog");
FName = tmpname;
}
}
DebugEnabled = level;
fp = fopen(FName, "w");
if (!fp) return;
fprintf(fp, "Debugging mode started...\n"
"-----------------------------------\n");
fclose(fp);
}
void ut_WriteLog(const char *fmt, ...)
{
FILE *fp = NULL;
time_t ahora;
va_list ap;
char *buffer = NULL;
if (DebugEnabled && FName) {
fp = fopen(FName, "a+");
if (!fp) return;
buffer = (char *) calloc(1, 64);
ahora = time(NULL);
strftime(buffer, 64, "[%H:%M:%S] ", localtime(&ahora));
fprintf(fp, "%s", buffer);
va_start(ap, fmt);
vfprintf(fp, fmt, ap);
va_end(ap);
free(buffer);
fclose(fp);
}
}
// to_iso8601(dststr, timestamp)
// Convert timestamp to iso8601 format, and store it in dststr.
// NOTE: dststr should be at last 19 chars long.
// Return should be 0
int to_iso8601(char *dststr, time_t timestamp)
{
struct tm *tm_time;
int ret;
tm_time = gmtime(×tamp);
ret = snprintf(dststr, 19, "%.4d%02d%02dT%02d:%02d:%02dZ",
1900+tm_time->tm_year, tm_time->tm_mon+1, tm_time->tm_mday,
tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec);
return ((ret == -1) ? -1 : 0);
}
// from_iso8601(timestamp, utc)
// This function comes from the Gaim project, gaim_str_to_time().
// (Actually date may not be pure iso-8601)
// Thanks, guys!
time_t from_iso8601(const char *timestamp, int utc)
{
struct tm t;
time_t retval = 0;
char buf[32];
char *c;
int tzoff = 0;
time(&retval);
localtime_r(&retval, &t);
snprintf(buf, sizeof(buf), "%s", timestamp);
c = buf;
/* 4 digit year */
if (!sscanf(c, "%04d", &t.tm_year)) return 0;
c+=4;
if (*c == '-')
c++;
t.tm_year -= 1900;
/* 2 digit month */
if (!sscanf(c, "%02d", &t.tm_mon)) return 0;
c+=2;
if (*c == '-')
c++;
t.tm_mon -= 1;
/* 2 digit day */
if (!sscanf(c, "%02d", &t.tm_mday)) return 0;
c+=2;
if (*c == 'T' || *c == '.') { /* we have more than a date, keep going */
c++; /* skip the "T" */
/* 2 digit hour */
if (sscanf(c, "%02d:%02d:%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3 ||
sscanf(c, "%02d%02d%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3) {
int tzhrs, tzmins;
c+=8;
if (*c == '.') /* dealing with precision we don't care about */
c += 4;
if ((*c == '+' || *c == '-') &&
sscanf(c+1, "%02d:%02d", &tzhrs, &tzmins)) {
tzoff = tzhrs*60*60 + tzmins*60;
if (*c == '+')
tzoff *= -1;
}
if (tzoff || utc) {
//#ifdef HAVE_TM_GMTOFF
tzoff += t.tm_gmtoff;
//#else
//# ifdef HAVE_TIMEZONE
// tzset(); /* making sure */
// tzoff -= timezone;
//# endif
//#endif
}
}
}
t.tm_isdst = -1;
retval = mktime(&t);
retval += tzoff;
return retval;
}