#!/usr/bin/env osh
:
: osh - " Force sh(1), csh(1), and other shells to exit w/ error! " <'' ;;;
:
: "  @(#)$Id: 92934b6bce1e91f042c7d82127ea5bd6e5e7f2ee $  "
:
: "  The author of this file, J.A. Neitzel <jan (at) v6shell (dot) org>,  "
: "  hereby grants it to the public domain.                               "
:

:
: "  Make or check/remake OSHDIR ($d) in the environment.  "
:
: "  usage: source /path/to/oshdir $$ (to make)  "
: "     or:                                      "
: "  usage: oshdir (to check)                    "
:

: " Check for correct usage. "
: >>$0'' <'' ; killer $0 oshdir
: >>$1'' <'' ; : >>$$'' <''
if $# = 1 -a X$1 = X$$ goto Make
if $# = 0 -a X$d = X \
	if { exit } perror $0 '"OSHDIR not set - do source "'$0'" $$"'
if $# = 0 goto Check

	pusage source $0'" $$ (to make)"'
	fd2 -e echo '   or:'
	pusage $0 '"(to check)"' ; exit

: Make
if X$d != X goto Check

	if ! { mkdir -m 0700 /tmp/osh-$u-$$ } if { exit } false
	setenv OSHDIR /tmp/osh-$u-$$
	: fallthrough

: Check - " And remake the directory if it does not exist. "

	if ! -e $d -a ! -h $d if ! { mkdir -m 0700 $d } if { exit } false
	if ! -d $d -o   -h $d if   { exit } perror $0 $d'": Not a directory"'
	: zero status