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/*
* util.c --
*
* Misc utility functions.
*
* Copyright (c) 1999 Frank Strauss, Technical University of Braunschweig.
*
* See the file "COPYING" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* @(#) $Id: util.c,v 1.11 1999/06/09 19:43:32 strauss Exp $
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "smi.h"
#include "error.h"
#include "parser-smi.h"
void *util_malloc(size_t size)
{
return calloc(size, 1);
}
void *util_realloc(void *ptr, size_t size)
{
return realloc(ptr, size);
}
char *util_strdup(const char *s1)
{
if (s1) {
return strdup(s1);
} else {
return NULL;
}
}
char *util_strndup(const char *s1, size_t n)
{
char *p;
p = util_malloc(n+1);
strncpy(p, s1, n);
p[n] = 0;
return p;
}
int util_strcmp(const char *s1, const char *s2)
{
if ((!s1) || (!s2))
return -1;
return strcmp(s1, s2);
}
char *util_strcat(char **s1, char *s2)
{
char *s;
if (!s2)
return *s1;
if ((!s1) || (!*s1))
return s2;
s = util_malloc(strlen(*s1) + strlen(s2) + sizeof(char));
sprintf(s, "%s%s", *s1, s2);
free(*s1);
*s1 = s;
return s;
}
void util_free(void *ptr)
{
if (ptr) {
free(ptr);
}
}
int util_ispath(char *s)
{
return (strchr(s, '.') || strchr(s, '/'));
}
time_t smiMkTime(const char *s)
{
struct tm tm;
char tmp[3];
time_t t;
tm.tm_isdst = 0;
tm.tm_wday = 0;
tm.tm_yday = 0;
tm.tm_sec = 0;
if (strlen(s) == 11) {
/* seems to be SMIv2 11-char format yymmddhhmmZ */
tmp[2] = 0;
tm.tm_year = atoi(strncpy(tmp, &s[0], 2));
tm.tm_mon = atoi(strncpy(tmp, &s[2], 2)) - 1;
tm.tm_mday = atoi(strncpy(tmp, &s[4], 2));
tm.tm_hour = atoi(strncpy(tmp, &s[6], 2));
tm.tm_min = atoi(strncpy(tmp, &s[8], 2));
} else if (strlen(s) == 13) {
/* seems to be SMIv2 13-char format yyyymmddhhmmZ */
tmp[4] = 0;
tm.tm_year = atoi(strncpy(tmp, &s[0], 4)) - 1900;
tmp[2] = 0;
tm.tm_mon = atoi(strncpy(tmp, &s[4], 2)) - 1;
tm.tm_mday = atoi(strncpy(tmp, &s[6], 2));
tm.tm_hour = atoi(strncpy(tmp, &s[8], 2));
tm.tm_min = atoi(strncpy(tmp, &s[10], 2));
} else if (strlen(s) == 10) {
/* seems to be SMIng 10-char format yyyy-mm-dd */
tmp[4] = 0;
tm.tm_year = atoi(strncpy(tmp, &s[0], 4)) - 1900;
tmp[2] = 0;
tm.tm_mon = atoi(strncpy(tmp, &s[5], 2)) - 1;
tm.tm_mday = atoi(strncpy(tmp, &s[8], 2));
tm.tm_hour = 0;
tm.tm_min = 0;
} else if (strlen(s) == 16) {
/* seems to be SMIng 16-char format yyyy-mm-dd hh:mm */
tmp[4] = 0;
tm.tm_year = atoi(strncpy(tmp, &s[0], 4)) - 1900;
tmp[2] = 0;
tm.tm_mon = atoi(strncpy(tmp, &s[5], 2)) - 1;
tm.tm_mday = atoi(strncpy(tmp, &s[8], 2));
tm.tm_hour = atoi(strncpy(tmp, &s[11], 2));
tm.tm_min = atoi(strncpy(tmp, &s[14], 2));
} else {
return 0;
}
putenv("TZ=UTC"); tzset();
/* TODO: a better way to make mktime() use UTC !? */
t = mktime(&tm);
return t;
}
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