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#include <stdio.h>
#define import_kernel
#define import_knames
#define import_spp
#include <iraf.h>
extern char *environ[];
#ifdef __APPLE__
extern char ***_NSGetArgv();
extern int *_NSGetArgc();
#endif
#ifdef __linux__
extern char **xargv; /* defined in getarg(3f); requires libU77! */
extern int xargc;
#else
static char **xargv = NULL;
static int xargc = 0;
#endif
/* ZGCMDL -- Get the host system command line used to invoke this process.
* There does not seem to be any straightforward way to do this for UNIX,
* but the argc,argv info is evidently pushed on the stack immediately before
* the environment list, so we can locate the ARGV array by searching back
* up the stack a bit. This is very host OS dependent.
*/
int
ZGCMDL (
PKCHAR *cmd, /* receives the command line */
XINT *maxch, /* maxch chars out */
XINT *status
)
{
register char *ip, *op;
register int n;
char **argv;
#ifdef __APPLE__
argv = *_NSGetArgv();
xargc = *_NSGetArgc();
xargv = argv;
#else
unsigned int *ep;
register int narg;
if (!(argv = xargv)) {
/* Locate the ARGV array. This assumes that argc,argv are
* stored in memory immediately preceeding the environment
* list, i.e.,
*
* argc
* argv[0]
* argv[1]
* ...
* argv[argc-1]
* NULL
* env[0] <- environ
* env[1]
* ...
*
* !! NOTE !! - This is very system dependent!
*/
ep = ((unsigned int *) *environ) - 1;
for (narg=0; *(ep-1) != (unsigned int)narg; narg++)
--ep;
xargc = narg;
argv = (char **)ep;
}
#endif
/* Reconstruct the argument list.
*/
for (op=(char *)cmd, n = *maxch, argv++; n >= 0 && *argv; argv++) {
if (op > (char *)cmd && --n >= 0)
*op++ = ' ';
for (ip = *argv; --n >= 0 && (*op = *ip++); op++)
;
}
*op = EOS;
*status = op - (char *)cmd;
return (XOK);
}
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