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apply: capture system() failure #376

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merged 1 commit into from
Dec 15, 2023
Merged

apply: capture system() failure #376

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45 changes: 29 additions & 16 deletions bin/apply
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Original file line number Diff line number Diff line change
Expand Up @@ -14,20 +14,13 @@ License: perl

use strict;

use File::Basename qw(basename);

use constant EX_SUCCESS => 0;
use constant EX_FAILURE => 1;

my ($VERSION) = '1.2';

sub usage () {
require File::Basename;
$0 = File::Basename::basename ($0);
print <<EOF;
$0 (Perl bin utils) $VERSION
$0 [-ac] [-#] command argument [argument ...]
EOF
exit EX_FAILURE;
};
my $Program = basename($0);
my ($VERSION) = '1.3';

my $argc = 1;
my $magic = '%';
Expand All @@ -48,7 +41,7 @@ while (@ARGV) {
next;
}
if ($ARGV [0] =~ /^-/) {
usage; # usage will exit;
usage(); # usage will exit
}
last;
}
Expand All @@ -65,23 +58,43 @@ if (@thingies) { # Ignore $argc, found our own.
}

# Now, apply the command till we run out.
my $err = EX_SUCCESS;
while (@ARGV && @ARGV >= $argc) {
if (@thingies) {
(my $new_command = $command) =~ s/${magic}(\d+)/$ARGV [$1 - 1]/ge;
system $new_command; # Reinterpreted by the shell!
my $rc = system $new_command; # Reinterpreted by the shell!
checkerr($rc);
splice @ARGV, 0, $argc;
}
else {
if ($argc) {
system $command, splice @ARGV, 0, $argc;
my $rc = system $command, splice @ARGV, 0, $argc;
checkerr($rc);
}
else {
system $command;
my $rc = system $command;
checkerr($rc);
shift;
}
}
}
exit EX_SUCCESS;
exit $err;

sub checkerr {
my $status = shift;
if ($status != 0) {
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if ($status == -1) {
warn "$Program: command failed: $!\n";
}
$err = EX_FAILURE;
}
}

sub usage {
warn "$Program (Perl bin utils) $VERSION\n";
warn "usage: $Program [-ac] [-#] command argument [argument ...]\n";
exit EX_FAILURE;
}

__END__

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