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/*****************************************************************************
*
* Usepackage Environment Manager
* Copyright (C) 1995-2002 Jonathan Hogg <jonathan@onegoodidea.com>
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Name : utils.c
* Author : Jonathan Hogg <jonathan@onegoodidea.com>
*
****************************************************************************/
/* utils.c */
/* Jonathan AH Hogg */
/*** uses: ***/
#include <pwd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "utils.h"
/*** functions: ***/
int is_csh_user(void)
{
struct passwd *pwent;
char *shell;
pwent = getpwuid(getuid());
shell = strrchr(pwent->pw_shell, '/');
if (!shell) return(0);
shell++;
return ((!strcmp(shell, "csh")) || (!strcmp(shell, "tcsh")));
}
char* expand(char* filepath)
{
static char newpath[256];
static char username[32];
struct passwd* pwent;
char* home;
int i,j;
i = 0;
newpath[0] = '\0';
if (filepath[i] == '~')
{
i++;
if (!filepath[i] || filepath[i] == '/')
{
home = getenv("HOME");
if (home)
{
strcat(newpath, home);
}
else
{
pwent = getpwuid(getuid());
if (!pwent)
{
fprintf(stderr, "usepackage: cannot obtain home directory.\n");
return(filepath);
}
strcat(newpath, pwent->pw_dir);
}
}
else
{
j = i;
while (filepath[i] && (filepath[i] != '/')) i++;
strncpy(username, filepath + j, i - j);
username[i-j] = '\0';
pwent = getpwnam(username);
if (!pwent)
{
fprintf(stderr,
"usepackage: cannot obtain home directory of user `%s'.\n",
username);
return(filepath);
}
strcat(newpath, pwent->pw_dir);
}
}
strcat(newpath, filepath + i);
return(newpath);
}
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