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/*
** @(#)getopt.c 2.5 (smail) 9/15/87
*/
#include "../postgis_config.h"
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "getopt.h"
/*
* Here's something you've all been waiting for: the AT&T public domain
* source for getopt(3). It is the code which was given out at the 1985
* UNIFORUM conference in Dallas. I obtained it by electronic mail
* directly from AT&T. The people there assure me that it is indeed
* in the public domain.
*
* There is no manual page. That is because the one they gave out at
* UNIFORUM was slightly different from the current System V Release 2
* manual page. The difference apparently involved a note about the
* famous rules 5 and 6, recommending using white space between an option
* and its first argument, and not grouping options that have arguments.
* Getopt itself is currently lenient about both of these things. White
* space is allowed, but not mandatory, and the last option in a group can
* have an argument. That particular version of the man page evidently
* has no official existence, and my source at AT&T did not send a copy.
* The current SVR2 man page reflects the actual behavor of this getopt.
* However, I am not about to post a copy of anything licensed by AT&T.
*/
#define ERR(s, c)\
if(pgis_opterr){\
char errbuf[2];\
errbuf[0] = (char)c; errbuf[1] = '\n';\
(void) write(2, argv[0], (unsigned)strlen(argv[0]));\
(void) write(2, s, (unsigned)strlen(s));\
(void) write(2, errbuf, 2);\
}
int pgis_opterr = 1;
int pgis_optind = 1;
int pgis_optopt;
char *pgis_optarg;
int
pgis_getopt(int argc, char **argv, char *opts)
{
static int sp = 1;
register int c;
register char *cp;
if (sp == 1)
{
if (pgis_optind >= argc ||
argv[pgis_optind][0] != '-' /* && argv[pgis_optind][0] != '/' */ ||
argv[pgis_optind][1] == '\0')
{
return(EOF);
}
else if (strcmp(argv[pgis_optind], "--") == 0)
{
pgis_optind++;
return(EOF);
}
}
pgis_optopt = c = argv[pgis_optind][sp];
if (c == ':' || (cp=strchr(opts, c)) == 0)
{
ERR(": illegal option -- ", c);
if (argv[pgis_optind][++sp] == '\0')
{
pgis_optind++;
sp = 1;
}
return('?');
}
if (*++cp == ':')
{
if (argv[pgis_optind][sp+1] != '\0')
pgis_optarg = &argv[pgis_optind++][sp+1];
else if (++pgis_optind >= argc)
{
ERR(": option requires an argument -- ", c);
sp = 1;
return('?');
}
else
pgis_optarg = argv[pgis_optind++];
sp = 1;
}
else
{
if (argv[pgis_optind][++sp] == '\0')
{
sp = 1;
pgis_optind++;
}
pgis_optarg = NULL;
}
return(c);
}
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