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57 lines
1.3 KiB
57 lines
1.3 KiB
20 years ago
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#!/usr/bin/perl
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# Copyright 2004 - Ryan Anderson <ryan@michonline.com> GPL v2
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use strict;
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use warnings;
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use Digest::MD5;
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require 5.006;
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if (@ARGV != 1) {
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print <<EOT;
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Usage: setlocalversion <srctree>
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EOT
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exit(1);
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}
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my ($srctree) = @ARGV;
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chdir($srctree);
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my @LOCALVERSIONS = ();
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# We are going to use the following commands to try and determine if this
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# repository is at a Version boundary (i.e, 2.6.10 vs 2.6.10 + some patches) We
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# currently assume that all meaningful version boundaries are marked by a tag.
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# We don't care what the tag is, just that something exists.
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# Git/Cogito store the top-of-tree "commit" in .git/HEAD
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# A list of known tags sits in .git/refs/tags/
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#
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# The simple trick here is to just compare the two of these, and if we get a
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# match, return nothing, otherwise, return a subset of the SHA-1 hash in
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# .git/HEAD
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sub do_git_checks {
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open(H,"<.git/HEAD") or return;
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my $head = <H>;
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chomp $head;
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close(H);
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opendir(D,".git/refs/tags") or return;
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foreach my $tagfile (grep !/^\.{1,2}$/, readdir(D)) {
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open(F,"<.git/refs/tags/" . $tagfile) or return;
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my $tag = <F>;
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chomp $tag;
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close(F);
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return if ($tag eq $head);
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}
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closedir(D);
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push @LOCALVERSIONS, "g" . substr($head,0,8);
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}
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if ( -d ".git") {
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do_git_checks();
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}
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printf "-%s\n", join("-",@LOCALVERSIONS) if (scalar @LOCALVERSIONS > 0);
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