emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Latest and greatest.

Browse Source 
-Erik
This commit is contained in:
Eric Andersen
1999-10-12 15:42:48 +00:00
parent f811e07b07
commit 2ce1edcf54
19 changed files with 255 additions and 305 deletions
Download Patch File Download Diff File Expand all files Collapse all files

172
date.c
View File

@@ -1,3 +1,24 @@
/*
* Mini date implementation for busybox
*
* Copyright (C) 1999 by Erik Andersen <andersee@debian.org>
*
* 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 "internal.h"
#include <stdlib.h>
#include <errno.h>
@@ -5,7 +26,6 @@
#include <unistd.h>
#include <time.h>
#include <stdio.h>
#include <getopt.h>
/* This 'date' command supports only 2 time setting formats,
@@ -14,25 +34,12 @@
an RFC 822 complient date output for shell scripting
mail commands */
const char date_usage[] = "date [-uR] [+FORMAT|+%f] [ [-s|-d] MMDDhhmm[[CC]YY]\n"
"| [[[[CCYY.]MM.DD-]hh:mm[:ss]]]] ]";
//static const char date_usage[] = "Usage: date [OPTION]... [+FORMAT]\n"
//"or: date [OPTION] [MMDDhhmm[[CC]YY][.ss]]\n"
//"Display the current time in the given FORMAT, or set the system date.\n";
static struct option const long_options[] =
{
{"date", required_argument, NULL, 'd'},
/* {"rfc-822", no_argument, NULL, 'R'},
{"set", required_argument, NULL, 's'},
{"uct", no_argument, NULL, 'u'},
{"utc", no_argument, NULL, 'u'},
{"universal", no_argument, NULL, 'u'}, */
{NULL, 0, NULL, 0}
};
const char date_usage[] = "Usage: date [OPTION]... [+FORMAT]\n"
" or: date [OPTION] [MMDDhhmm[[CC]YY][.ss]]\n"
"Display the current time in the given FORMAT, or set the system date.\n"
"\nOptions:\n\t-R\t\toutput RFC-822 compliant date string\n"
"\t-s\t\tset time described by STRING\n"
"\t-u\t\tprint or set Coordinated Universal Time\n";
/* Input parsing code is always bulky - used heavy duty libc stuff as
@@ -53,7 +60,7 @@ date_conv_time(struct tm *tm_time, const char *t_string) {
if(nr < 4 || nr > 5) {
fprintf(stderr, "date: invalid date `%s'\n", t_string);
exit(1);
exit( FALSE);
}
/* correct for century - minor Y2K problem here? */
@@ -147,15 +154,15 @@ date_conv_ftime(struct tm *tm_time, const char *t_string) {
fprintf(stderr, "date: invalid date `%s'\n", t_string);
exit(1);
exit( FALSE);
}
void
date_err(void) {
fprintf(stderr, "date: only one date argument can be given at a time.\n");
exit(1);
fprintf (stderr, "%s\n", date_usage);
exit( FALSE);
}
int
@@ -164,82 +171,56 @@ date_main(int argc, char * * argv)
char *date_str = NULL;
char *date_fmt = NULL;
char *t_buff;
int i;
int set_time = 0;
int rfc822 = 0;
int utc = 0;
int use_arg = 0;
int n_args;
time_t tm;
struct tm tm_time;
char optc;
/* Interpret command line args */
while ((optc = getopt_long (argc, argv, "d:Rs:u", long_options, NULL))
!= EOF) {
switch (optc) {
case 0:
break;
case 'R':
rfc822 = 1;
break;
case 's':
set_time = 1;
if(date_str != NULL) date_err();
date_str = optarg;
break;
case 'u':
utc = 1;
if (putenv ("TZ=UTC0") != 0) {
fprintf(stderr,"date: memory exhausted\n");
return(1);
}
#if LOCALTIME_CACHE
tzset ();
#endif break;
case 'd':
use_arg = 1;
if(date_str != NULL) date_err();
date_str = optarg;
break;
default:
fprintf(stderr, "Usage: %s", date_usage);
break;
i = --argc;
argv++;
while (i > 0 && **argv) {
if (**argv == '-') {
while (i>0 && *++(*argv)) switch (**argv) {
case 'R':
rfc822 = 1;
break;
case 's':
set_time = 1;
if(date_str != NULL) date_err();
date_str = optarg;
break;
case 'u':
utc = 1;
if (putenv ("TZ=UTC0") != 0) {
fprintf(stderr,"date: memory exhausted\n");
exit( FALSE);
}
/* Look ma, no break. Don't fix it either. */
case 'd':
use_arg = 1;
if(date_str != NULL) date_err();
date_str = optarg;
break;
case '-':
date_err();
}
} else {
if ( (date_fmt == NULL) && (strcmp(*argv, "+")==0) )
date_fmt=*argv;
else if (date_str == NULL) {
set_time = 1;
date_str=*argv;
} else {
date_err();
}
}
i--;
argv++;
}
}
n_args = argc - optind;
while (n_args--){
switch(argv[optind][0]) {
case '+':
/* Date format strings */
if(date_fmt != NULL) {
fprintf(stderr, "date: only one date format can be given.\n");
return(1);
}
date_fmt = &argv[optind][1];
break;
case '\0':
break;
default:
/* Anything left over must be a date string to set the time */
set_time = 1;
if(date_str != NULL) date_err();
date_str = argv[optind];
break;
}
optind++;
}
/* Now we have parsed all the information except the date format
@@ -267,14 +248,14 @@ date_main(int argc, char * * argv)
tm = mktime(&tm_time);
if (tm < 0 ) {
fprintf(stderr, "date: invalid date `%s'\n", date_str);
exit(1);
exit( FALSE);
}
/* if setting time, set it */
if(set_time) {
if( stime(&tm) < 0) {
fprintf(stderr, "date: can't set date.\n");
exit(1);
exit( FALSE);
}
}
}
@@ -292,7 +273,7 @@ date_main(int argc, char * * argv)
} else if ( *date_fmt == '\0' ) {
/* Imitate what GNU 'date' does with NO format string! */
printf ("\n");
return(0);
exit( TRUE);
}
/* Handle special conversions */
@@ -306,6 +287,7 @@ date_main(int argc, char * * argv)
strftime(t_buff, 200, date_fmt, &tm_time);
printf("%s\n", t_buff);
return(0);
exit( TRUE);
}