68 lines
2 KiB
Perl
68 lines
2 KiB
Perl
|
#
|
||
|
|
# @(#)dotsh.pl 03/19/94
|
||
|
|
#
|
||
|
|
# Author: Charles Collins
|
||
|
|
#
|
||
|
|
# Description:
|
||
|
|
# This routine takes a shell script and 'dots' it into the current perl
|
||
|
|
# environment. This makes it possible to use existing system scripts
|
||
|
|
# to alter environment variables on the fly.
|
||
|
|
#
|
||
|
|
# Usage:
|
||
|
|
# &dotsh ('ShellScript', 'DependentVariable(s)');
|
||
|
|
#
|
||
|
|
# where
|
||
|
|
#
|
||
|
|
# 'ShellScript' is the full name of the shell script to be dotted
|
||
|
|
#
|
||
|
|
# 'DependentVariable(s)' is an optional list of shell variables in the
|
||
|
|
# form VARIABLE=VALUE,VARIABLE=VALUE,... that 'ShellScript' is
|
||
|
|
# dependent upon. These variables MUST be defined using shell syntax.
|
||
|
|
#
|
||
|
|
# Example:
|
||
|
|
# &dotsh ('/tmp/foo', 'arg1');
|
||
|
|
# &dotsh ('/tmp/foo');
|
||
|
|
# &dotsh ('/tmp/foo arg1 ... argN');
|
||
|
|
#
|
||
|
|
sub dotsh {
|
||
|
|
local(@sh) = @_;
|
||
|
|
local($tmp,$key,$shell,*dotsh,$command,$args,$vars) = '';
|
||
|
|
$dotsh = shift(@sh);
|
||
|
|
@dotsh = split (/\s/, $dotsh);
|
||
|
|
$command = shift (@dotsh);
|
||
|
|
$args = join (" ", @dotsh);
|
||
|
|
$vars = join ("\n", @sh);
|
||
|
|
open (_SH_ENV, "$command") || die "Could not open $dotsh!\n";
|
||
|
|
chop($_ = <_SH_ENV>);
|
||
|
|
$shell = "$1 -c" if ($_ =~ /^\#\!\s*(\S+(\/sh|\/ksh|\/zsh|\/csh))\s*$/);
|
||
|
|
close (_SH_ENV);
|
||
|
|
if (!$shell) {
|
||
|
|
if ($ENV{'SHELL'} =~ /\/sh$|\/ksh$|\/zsh$|\/csh$/) {
|
||
|
|
$shell = "$ENV{'SHELL'} -c";
|
||
|
|
} else {
|
||
|
|
print "SHELL not recognized!\nUsing /bin/sh...\n";
|
||
|
|
$shell = "/bin/sh -c";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (length($vars) > 0) {
|
||
|
|
system "$shell \"$vars;. $command $args; set > /tmp/_sh_env$$\"";
|
||
|
|
} else {
|
||
|
|
system "$shell \". $command $args; set > /tmp/_sh_env$$\"";
|
||
|
|
}
|
||
|
|
|
||
|
|
open (_SH_ENV, "/tmp/_sh_env$$") || die "Could not open /tmp/_sh_env$$!\n";
|
||
|
|
while (<_SH_ENV>) {
|
||
|
|
chop;
|
||
|
|
m/^([^=]*)=(.*)/s;
|
||
|
|
$ENV{$1} = $2;
|
||
|
|
}
|
||
|
|
close (_SH_ENV);
|
||
|
|
system "rm -f /tmp/_sh_env$$";
|
||
|
|
|
||
|
|
foreach $key (keys(%ENV)) {
|
||
|
|
$tmp .= "\$$key = \$ENV{'$key'};" if $key =~ /^[A-Za-z]\w*$/;
|
||
|
|
}
|
||
|
|
eval $tmp;
|
||
|
|
}
|
||
|
|
1;
|