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/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2001 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include "msg_utilbin.h"
#include "sge_language.h"
int should_sleep = 0;
/* load profile */
int sleep_time = 0;
int working_time = 1;
/* options */
char cmin, cmax;
int silent = 0;
int nproc = 1;
int n = 1;
void usage(int exit_code);
void permutation(int n);
void go_sleep(int signo);
int main(int argc, char *argv[])
{
int i;
#ifdef __SGE_COMPILE_WITH_GETTEXT__
/* init language output for gettext() , it will use the right language */
sge_init_language_func((gettext_func_type) gettext,
(setlocale_func_type) setlocale,
(bindtextdomain_func_type) bindtextdomain,
(textdomain_func_type) textdomain);
sge_init_language(NULL,NULL);
#endif /* __SGE_COMPILE_WITH_GETTEXT__ */
while (argc>1 && argv[1][0] == '-') {
if (!strcmp(argv[1], "-s")) {
silent = 1;
argc--;
argv++;
}
if (!strcmp(argv[1], "-p")) {
argc--;
argv++;
if (sscanf(argv[1], "%d", &sleep_time)!=1)
usage(1);
argc--;
argv++;
}
if (!strcmp(argv[1], "-f")) {
argc--;
argv++;
if (sscanf(argv[1], "%d", &nproc)!=1)
usage(1);
argc--;
argv++;
}
}
if (argc<2 || argc>3)
usage(1);
if (strlen(argv[1])!=3 || argv[1][1]!='-')
usage(1);
cmin = argv[1][0];
cmax = argv[1][2];
if (cmin>=cmax)
usage(1);
if (argc==3)
if (sscanf(argv[2], "%d", &n)!=1 || n<1)
usage(1);
/* fork nproc-1 times */
for (i=1; i<nproc && fork()>0; i++)
;
/* install signal handler for SIGALRM */
if (sleep_time) {
signal(SIGALRM, go_sleep);
/* fprintf(stderr, "Working for %d seconds.\n", working_time); */
alarm(working_time);
}
permutation(n);
return 0;
}
void permutation(int n)
{
char c;
static char *s = NULL;
static int i = 0;
if (should_sleep && sleep_time) {
/* fprintf(stderr, "Sleeping for %d seconds.\n", sleep_time); */
sleep(sleep_time);
signal(SIGALRM, go_sleep);
/* fprintf(stderr, "Working for %d seconds.\n", working_time); */
alarm(working_time);
should_sleep = 0;
}
if (!s) {
s = (char *)malloc(n+1);
s[n]='\0';
}
for (c=cmin; c<=cmax; c++) {
s[i] = c;
if (n!=1) {
i++;
permutation(n-1);
i--;
} else
if (!silent)
printf("%s\n", s);
}
}
void usage(int exit_code)
{
printf("%s\n permutation [options] range [number]\n",MSG_UTILBIN_USAGE);
printf("%s\n", MSG_UTILBIN_PERMUSAGE1);
printf(" -s %s\n",MSG_UTILBIN_PERMUSAGE2);
printf(" -p n %s\n",MSG_UTILBIN_PERMUSAGE3);
printf(" -f n %s\n",MSG_UTILBIN_PERMUSAGE4);
printf("%s\n", MSG_UTILBIN_PERMUSAGE5);
exit(exit_code);
}
/* signal handler for SIGALRM */
void go_sleep(int signo)
{
should_sleep = 1;
}
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