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/* OPT v3.9: options parsing tool */
/*
*
* Copyright (C) 1996,1997,1998,1999 James Theiler
*
* 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 (it is in the file COPYING); if not, write
* to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
/* testopt.c */
#include <stdio.h>
#include <stdlib.h>
#include <opt.h>
int month=4;
int day=24;
int year=1993;
int julian=0;
char *who=NULL;
int version=99;
int go(int argc, char **argv)
{
if (argc>1) {
printf("In program %s, Extra option: %s\n",argv[0],argv[1]);
}
if (optinvoked(&month)) {
printf("User set month...\n");
}
if (month == 9 && day == 11 && year == 1989) {
printf("Happy birthday, Max\n");
} else {
printf("Hello, %s: %4d/%02d/%02d %s\n",(who==NULL ? "world" : who),
year,month,day,(julian ? "(Julian)" : ""));
}
return OPT_OK;
}
int checkyear(void *v)
{
if (year == 2000) {
printf("Watch out for that year=2000 bug!\n");
return OPT_ERROR;
}
return OPT_OK;
}
int quit()
{
printf("Bye...\n");
return OPT_OK;
}
int write_version(void *v)
{
/* it's a little hokey that this requires an argument... */
v = &version;
printf("Version %d\n",version);
optExitNumber(12);
return OPT_EXIT;
}
int fix_mon(void *v)
{
int m;
/* fix whatever int variable v is pointing to */
m = *((int *)v);
if (m < 1 || m > 12)
m=1;
*((int *)v) = m;
return OPT_OK;
}
int
main(int argc, char **argv)
{
optreg(&month,OPT_INT,'m',"Month");
optlongname(&month,"month");
opthook(&month,fix_mon);
optrega(&day,OPT_INT,'d',"day","Day");
opthelp(&day,"Use day of month, should be less than 32");
optreg_INT(&year,'y',"Year");
optreg(&year,OPT_INT,'Y',"Year");
optdescript(&year,"What Year");
opthook(&year,checkyear);
optregs(&julian,OPT_FLAG,"julian");
optreg(&who,OPT_UNDELIM,'\0',"Who to say hello to");
optexec("version",write_version,"Write version number and exit");
optEnvVarName( "OPT" );
optDefaultFile( "testoptrc" ); /* in practice, you do ~/.testoptrc */
optMain(go);
optQuit(quit);
opt(&argc,&argv);
return go(argc,argv);
}
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