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#!/usr/bin/env perl
use v5.34;
use warnings;
use feature 'signatures';
no warnings ('experimental::signatures', 'experimental::smartmatch');
use Getopt::Std ();
sub usage($fh) {
print $fh <<~'EOF'
Usage:
x COMMANDS... [ '&&' / '||' / '|' ] COMMANDS...
x COMMANDS... [ 'AND' / 'OR' / 'PIPE' ] COMMANDS...
x -h
EOF
}
sub help($fh) {
print $fh <<~'EOF'
Options:
-h, --help show this message
COMMAND the command to be executed
'&&' / AND "AND" logical operator
'||' / OR "OR" logical operator
'|' / PIPE pipe operator
Run command chained together with operators.
NOTE: Remember to quote '&&', 'OR' and '|' operators, otherwise
they'll get captured by the shell and not be passed to the 'x'
program!
Examples:
Measure the time of two commands:
$ time x sleep 1 '&&' sleep 2
# equivalent to:
$ time sh -c 'sleep 1 && sleep 2'
Notify when either of the commands finish:
$ boop x cmd-1 '||' cmd-2
EOF
}
for (@ARGV) {
last if $_ eq '--';
if ($_ eq '--help') {
usage *STDOUT;
help *STDOUT;
exit;
}
}
my %opts;
if (!Getopt::Std::getopts('h', \%opts)) {
usage *STDERR;
exit 2;
}
if ($opts{h}) {
usage *STDOUT;
help *STDOUT;
exit;
}
sub status_for($n) {
if ($n == -1) {
return 127;
} elsif ($n & 127) {
return $n & 127;
} else {
return $n >> 8;
}
}
my @AND = ('&&', 'AND');
my @OR = ('||', 'OR');
my @PIPE = ('|', 'PIPE');
my @OPS = (@AND, @OR, @PIPE);
my @CMD;
for (@ARGV) {
if ($_ ~~ @OPS) {
system @CMD;
@CMD = ();
if ($_ ~~ @AND && $?) {
exit status_for($?);
} elsif ($_ ~~ @OR && !$?) {
exit 0;
} elsif ($_ ~~ @PIPE) {
...
}
} else {
push @CMD, $_;
}
}
exit status_for(system @CMD);
__END__
=head1 NAME
z - automatically uncompress arguments to other commands
=head1 SYNOPSYS
z COMMAND FILE... ARGUMENTS...
=cut
# FIXME: implement manpage in pod
# .TH x 1 1970-01-01 "x latest" "x user manual"
#
#
# .SH NAME
#
# x - chain shell commands without creating a subshell.
#
#
# .SH SYNOPSYS
#
# \fBx\fR [\fIOPTIONS\fR] COMMAND... [ \fI'&&'\fR / \fI'||'\fR / \fI'|'\fR ] COMMAND...
#
#
# .SH DESCRIPTION
#
# \fBx\fR is a \m[blue]\fBtool\fP\m[], from
# .pdfhref W -D https://euandre.org/ -- The best website ever
# .
#
#
# .SH OPTIONS
#
# .TP
# \fB-h\fR, \fB--help\fR
# Show help text.
#
#
# .SH OPERATORS
#
#
# =pod
# =head1 Heading Text
# =head2 Heading Text
# =head3 Heading Text
# =head4 Heading Text
# =over indentlevel
# =item stuff
# =back
# =begin format
# =end format
# =for format text...
# =encoding type
# =cut
|
