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#!/usr/bin/perl
use warnings;
use strict;
sub nChanges {
my ($branches, $fname) = @_;
local *F;
# requires perl 5.8. Avoids shell issues if we ever get a changes
# file named by the parents of Little Johnny Tables.
open F, "-|", "git", "log", "--pretty=format:%H", $branches, "--", $fname
or die "$!";
my @changes = <F>;
return scalar @changes
}
my $look_for_type = "merged";
if (! @ARGV) {
print <<EOF
Usage:
findMergedChanges.pl [--merged/--unmerged/--weird/--list] [--branch=<branchname] changes/*
A change is "merged" if it has ever been merged to release-0.2.2 and it has had
no subsequent changes in master.
A change is "unmerged" if it has never been merged to release-0.2.2 and it
has had changes in master.
A change is "weird" if it has been merged to release-0.2.2 and it *has* had
subsequent changes in master.
Suggested application:
findMergedChanges.pl --merged changes/* | xargs -n 1 git rm
EOF
}
my $target_branch = "origin/release-0.2.2";
while (@ARGV and $ARGV[0] =~ /^--/) {
my $flag = shift @ARGV;
if ($flag =~ /^--(weird|merged|unmerged|list)/) {
$look_for_type = $1;
} elsif ($flag =~ /^--branch=(\S+)/) {
$target_branch = $1;
} else {
die "Unrecognized flag $flag";
}
}
for my $changefile (@ARGV) {
my $n_merged = nChanges($target_branch, $changefile);
my $n_postmerged = nChanges("${target_branch}..origin/master", $changefile);
my $type;
if ($n_merged != 0 and $n_postmerged == 0) {
$type = "merged";
} elsif ($n_merged == 0 and $n_postmerged != 0) {
$type = "unmerged";
} else {
$type = "weird";
}
if ($type eq $look_for_type) {
print "$changefile\n";
} elsif ($look_for_type eq 'list') {
printf "% 8s: %s\n", $type, $changefile;
}
}
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