/* 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., 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301, USA.

*/

#include <config.h>

#include <procinfo.h>

#include <glibtop.h>

#include <glibtop/error.h>

#include <glibtop/procargs.h>

#include "utils.h"

static const unsigned long _glibtop_sysdeps_proc_args =

	(1 << GLIBTOP_PROC_ARGS_SIZE);

/* Init function. */

void

_glibtop_init_proc_args_s (glibtop *server)

{

	server->sysdeps.proc_args = _glibtop_sysdeps_proc_args;

}

/* Provides detailed information about a process. */

static void _glibtop_remove_non_ascii(char* string)

{

	for (;*string != 0;string++)

	{

		if (!isascii(*string))

			*string = '?';

	}

}

char *

glibtop_get_proc_args_s (glibtop *server, glibtop_proc_args *buf,

			 pid_t pid, unsigned max_len)

{

	struct procsinfo *pinfo;

	char *args_buffer;

	char* args = NULL;

	int size;

	int result;

	int len;

	glibtop_init_s (&server, (1L << GLIBTOP_SYSDEPS_PROC_ARGS), 0);

	memset (buf, 0, sizeof (glibtop_proc_args));

	pinfo = _glibtop_get_procinfo(server, pid);

	if (pinfo == NULL) return NULL;

	size = max_len != 0 ? max_len : 4096;

	args_buffer = g_malloc (size);

	result = getargs(pinfo, sizeof(struct procsinfo), args_buffer, size);

	if (result == -1)

	{

		glibtop_error_io_r (server, "Cannot malloc getargs");

		g_free(args_buffer);

		return NULL;

	}

	/* look if empty string */

	if (args_buffer[0] == 0)

	{

		g_free(args_buffer);

		return NULL;

	}

	/* compute length of args and realloc */

	len = 0;

	while ((args_buffer[len] != 0) && (len < size))

	{

		_glibtop_remove_non_ascii(args_buffer + len);

		len += strlen(args_buffer + len) + 1;

	}

	args = g_malloc (len);

	memcpy(args, args_buffer, len);

	g_free(args_buffer);

	buf->size = len - 1;

	buf->flags = _glibtop_sysdeps_proc_args;

	return args;

}