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cameo/zstack.pl: option -r to reverse the stack

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This commit is contained in:
Werner Almesberger 2012-03-18 23:20:27 -03:00
parent 219e0a5c2d
commit 5ecce7de9e
1 changed files with 15 additions and 1 deletions
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16
cameo/zstack.pl
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@ -14,7 +14,7 @@
sub usage
{
print STDERR "usage: $0 z-start z-maxstep [file ...]\n";
print STDERR "usage: $0 [-r] z-start z-maxstep [file ...]\n";
exit(1);
}
@ -35,6 +35,11 @@ sub issue
}
if ($ARGV[0] eq "-r") {
shift @ARGV;
$reverse = 1;
}
$z0 = shift @ARGV;
$zs = shift @ARGV;
@ -50,9 +55,18 @@ while (<>) {
}
$z = $3 if /^-?\d+(\.\d*)?\s+-?\d+(\.\d*)?\s+(-?\d+(\.\d*)?)/;
$s .= $_;
$zmax = $z if $z > $zmax || !defined $zmax;
}
$z{$z} .= "$s\n";
if ($reverse) {
for (keys %z) {
($t{$zmax-$_} = $z{$_}) =~
s/^(-?\d+(\.\d*)?)\s+(-?\d+(\.\d*)?)\s+/$3 $1 /mg;
}
%z = %t;
}
$z = $z0;
for $c (sort { $b <=> $a } keys %z) {
while ($z > $c+$zs) {