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ar: simplify strmode() #676

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Jul 22, 2024
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ar: simplify strmode() #676

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31 changes: 8 additions & 23 deletions bin/ar
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Original file line number Diff line number Diff line change
Expand Up @@ -387,29 +387,14 @@ sub writeAr {
sub strmode {
my ($mode) = @_;

# just the RWX bits.
$mode = oct($mode) & 0777;
my @modemap = (0400 => 'r', # R for owner
0200 => 'w', # W for owner
0100 => 'x', # X for owner

0040 => 'r', # R for group
0020 => 'w', # W for group
0010 => 'x', # X for group

0004 => 'r', # R for other
0002 => 'w', # W for other
0001 => 'x'); # X for other

my $modestr;
while (@modemap) {
my ($bit,$letter) = splice(@modemap,0,2);
if ($mode & $bit) {
$modestr .= $letter;
}
else {
$modestr .= "-";
}
die "bad file mode: $mode" if $mode !~ m/([0-7]+)/;
my $ugo = substr $1, -3; # only rwx bits
my $modestr = '';
foreach (split //, $ugo) {
my $i = oct;
$modestr .= $i & 4 ? 'r' : '-';
$modestr .= $i & 2 ? 'w' : '-';
$modestr .= $i & 1 ? 'x' : '-';
}
return $modestr;
}
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