/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */

/* $Id$ */

/* Copyright (C) 1998-99 Martin Baulig
   This file is part of LibGTop 1.0.

   Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.

   LibGTop 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.

   LibGTop 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 LibGTop; see the file COPYING. If not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/xmalloc.h>
#include <glibtop/procargs.h>

#include <glibtop_private.h>

static const unsigned long _glibtop_sysdeps_proc_args =
(1L << GLIBTOP_ARRAY_SIZE) + (1L << GLIBTOP_ARRAY_NUMBER);

/* Init function. */

int
glibtop_init_proc_args_s (glibtop *server)
{
    server->sysdeps.proc_args = _glibtop_sysdeps_proc_args;

    return 0;
}

/* Provides detailed information about a process. */

char **
glibtop_get_proc_args_s (glibtop *server, glibtop_array *array, pid_t pid)
{
#ifdef HAVE_PROCFS_H
    struct psinfo pinfo;
#else
    struct prpsinfo pinfo;
#endif
    int retval, len, i, count;
    char *ret, *p, **ptrlist;

    memset (array, 0, sizeof (glibtop_array));

    retval = glibtop_get_proc_data_psinfo_s(server, &pinfo, pid);
    if (retval) {
	server->glibtop_errno = retval;
	return NULL;
    }

    for(len = 0; len < PRARGSZ; ++len)
	if(!(pinfo.pr_psargs[len]))
	    break;

    ret = glibtop_malloc_r (server, len+1);
    memcpy(ret, pinfo.pr_psargs, len);
    ret[len] = 0;

    count = 0;
    for(p = ret; *p; ++p)
	if(*p == ' ') {
	    *p = 0; count++;
	}

    ptrlist = glibtop_calloc_r(server, len+1, sizeof (char *));

    for (i = 0, p = ret; i < count; i++) {
	ptrlist [i] = glibtop_strdup_r (server, p);
	p += strlen (p) + 1;
    }

    ptrlist [count] = NULL;

    glibtop_free_r (server, ret);

    array->number = count;
    array->size = sizeof (char *);
    array->flags = _glibtop_sysdeps_proc_args;

    return ptrlist;
}