From ee618b3f756846835b1da90445ec68c3dacb8a58 Mon Sep 17 00:00:00 2001 From: Martin Mares Date: Mon, 16 Jul 2012 22:11:52 +0200 Subject: [PATCH] Update2: Restructured code and added post-receive hook mode --- update2 | 268 ++++++++++++++++++++++++++++++++------------------------ 1 file changed, 155 insertions(+), 113 deletions(-) diff --git a/update2 b/update2 index 22681de..bfea61c 100755 --- a/update2 +++ b/update2 @@ -1,5 +1,5 @@ #!/usr/bin/perl -# This is a generic update hook script for GIT repositories. +# This is a generic update/post-receive hook script for GIT repositories. # Written by Martin Mares and placed into public domain. use strict; @@ -18,8 +18,9 @@ GetOptions( 'mail-to=s' => \$mail_to, 'subject-prefix=s' => \$subject_prefix, 'max-diff-size=s' => \$max_diff_size, -) and @ARGV == 3 or die <] +) and (@ARGV == 3 || !@ARGV) or die <] +Usage as post-receive hook: $0 [] Options: --mail-to=
Send mail to the given address @@ -27,26 +28,29 @@ Options: --subject-prefix= Prefix subjects with [] (default: GIT) AMEN -my ($ref, $old, $new) = @ARGV; -$ref =~ s{^refs/heads/}{} or exit 0; -$old ne $new or exit 0; - my $repo = POSIX::getcwd(); $repo =~ s{.*/}{}; -my $subj = '[' . $subject_prefix . ($ref eq 'master' ? '' : "/$ref") . ']'; -my $out = File::Temp->new() or die; -my $outname = $out->filename; -$out->autoflush(1); -open ORIG_STDOUT, '>&', \*STDOUT; -close STDOUT; -open STDOUT, '>&', $out or die; - my @rev_list_options = ('--pretty', '--no-abbrev', '--date=iso'); my @diff_options = ('-C'); -sub scan_branches() { - # Is there any branch pointing to $new ? +sub update_ref($$$); + +open ORIG_STDOUT, '>&', \*STDOUT; + +if (@ARGV) { + update_ref($ARGV[0], $ARGV[1], $ARGV[2]); #FIXME +} else { + while () { + chomp; + my ($old, $new, $ref) = /^(\S+) (\S+) (.*)/ or die "Error parsing hook input ($_)\n"; + update_ref($ref, $old, $new); + } +} + +sub scan_branches($$) { + my ($ref, $new) = @_; + # Is there any branch pointing to $new (other than $ref)? for (`git branch -v --no-abbrev`) { chomp; my ($name, $sha) = /^..(\S+)\s+(\S+)/ or die; @@ -57,7 +61,8 @@ sub scan_branches() { return; } -sub scan_commits() { +sub scan_commits($$) { + my ($old, $new) = @_; my @commits = (); for (`git rev-list $old..$new --pretty=format:"# %H (%P) %s"`) { chomp; @@ -72,113 +77,150 @@ sub scan_commits() { return @commits; } -sub most_recent() { - print $out "Most recent commits:\n\n"; +sub most_recent($) { + my ($new) = @_; + print STDOUT "Most recent commits:\n\n"; system 'git', 'rev-list', @rev_list_options, '--max-count=20', $new; } -sub output_size() { +sub output_size($) { + my ($out) = @_; $out->seek(0, 2); return $out->tell; } -if ($old =~ /^0+$/) { - # Creation of a branch - $subj .= ' Created branch'; - my $copy_of = scan_branches(); - if (defined $copy_of) { - $subj .= " as a copy of $copy_of"; - print $out "Created branch $ref as a copy of $copy_of ($new).\n"; - } else { - print $out "Created branch $ref ($new).\n\n"; - most_recent(); - } -} elsif ($new =~ /^0+$/) { - # Deletion of a branch - $subj .= ' Branch deleted'; - print $out "Deleted branch $ref ($old).\n"; -} else { - my $lca = `git merge-base $old $new`; die if $?; - chomp $lca; - if ($lca eq $old) { - # Fast forward ... scan all objects - my @commits = scan_commits(); - my @nonmerges = grep { @{$_->{parents}} == 1 } @commits; - @commits or exit; - - # Construct subject - # Try to recognize simple merges and display them as such - my $c0 = $commits[0]; - my $n0 = $nonmerges[0]; - my $c0p = $c0->{parents}; - if (@{$c0p} == 2 && - ($c0p->[0] eq $old || $c0p->[1] eq $old) && - $c0->{subject} =~ m{^\s*Merge branch '([^']*)' into (\S+)} && - (($1 eq $ref) != ($2 eq $ref))) { - # Pushed a merge of the current branch with another local branch - $subj .= ' ' . $c0->{subject}; - } elsif ($n0) { - # Otherwise take the subject of the first non-merge commit - $subj .= ' ' . $n0->{subject}; +sub update_branch($$$$$) +{ + my ($branch, $old, $new, $out, $headers) = @_; + + my $subj = '[' . $subject_prefix . ($branch eq 'master' ? '' : "/$branch") . ']'; + if ($old =~ /^0+$/) { + # Creation of a branch + $subj .= ' Created branch'; + my $copy_of = scan_branches($branch, $new); + if (defined $copy_of) { + $subj .= " as a copy of $copy_of"; + print $out "Created branch $branch as a copy of $copy_of ($new).\n"; } else { - # If there is none, take the first merge - $subj .= ' ' . $c0->{subject}; + print $out "Created branch $branch ($new).\n\n"; + most_recent($new); } - - print $out "Push to branch $ref ($old -> $new)\n\n"; - - # If there are multiple commits, mention that - if (@nonmerges > 1) { - $subj .= ' [' . (scalar @commits) . ' commits]'; - print $out 'Pushed ', (scalar @commits), " commits. Overall diffstat:\n\n"; + } elsif ($new =~ /^0+$/) { + # Deletion of a branch + $subj .= ' Branch deleted'; + print $out "Deleted branch $branch ($old).\n"; + } else { + my $lca = `git merge-base $old $new`; die if $?; + chomp $lca; + if ($lca eq $old) { + # Fast forward ... scan all objects + my @commits = scan_commits($old, $new); + my @nonmerges = grep { @{$_->{parents}} == 1 } @commits; + @commits or return; + + # Construct subject + # Try to recognize simple merges and display them as such + my $c0 = $commits[0]; + my $n0 = $nonmerges[0]; + my $c0p = $c0->{parents}; + if (@{$c0p} == 2 && + ($c0p->[0] eq $old || $c0p->[1] eq $old) && + $c0->{subject} =~ m{^\s*Merge branch '([^']*)' into (\S+)} && + (($1 eq $branch) != ($2 eq $branch))) { + # Pushed a merge of the current branch with another local branch + $subj .= ' ' . $c0->{subject}; + } elsif ($n0) { + # Otherwise take the subject of the first non-merge commit + $subj .= ' ' . $n0->{subject}; + } else { + # If there is none, take the first merge + $subj .= ' ' . $c0->{subject}; + } + + print $out "Push to branch $branch ($old -> $new)\n\n"; + + # If there are multiple commits, mention that + if (@nonmerges > 1) { + $subj .= ' [' . (scalar @commits) . ' commits]'; + print $out 'Pushed ', (scalar @commits), " commits. Overall diffstat:\n\n"; + } + + # Print an overall diffstat + system 'git', 'diff', '--stat', $old, $new; + print $out "\n"; + my $pos_after_header = output_size($out); + + # Show individual commits with diffs + system 'git', 'log', @rev_list_options, @diff_options, '-p', "$old..$new"; + + # If the file is too long, truncate it and print just a summary + if (defined($max_diff_size) && output_size($out) > $max_diff_size) { + $out->truncate($pos_after_header); + output_size($out); + print $out "Diff was too long, printing just a summary.\n\n"; + system 'git', 'log', @rev_list_options, "$old..$new"; + } + } elsif ($lca eq $new) { + # Rewind + $subj .= ' Branch rewound'; + print $out "Rewound branch $branch ($old -> $new).\n\n"; + most_recent($new); + } else { + # Otherwise it is a rebase + $subj .= ' Branch rebased'; + print $out "Rebased branch $branch ($old -> $new).\n\n"; + print $out "Commits from common ancestor:\n\n"; + system 'git', 'rev-list', @rev_list_options, $new, "^$old"; } + } - # Print an overall diffstat - system 'git', 'diff', '--stat', $old, $new; - print $out "\n"; - my $pos_after_header = output_size(); - - # Show individual commits with diffs - system 'git', 'log', @rev_list_options, @diff_options, '-p', "$old..$new"; + $headers->{'Subject'} = $subj; + $headers->{'X-Git-Branch'} = $branch; + return 1; +} - # If the file is too long, truncate it and print just a summary - if (defined($max_diff_size) && output_size() > $max_diff_size) { - $out->truncate($pos_after_header); - output_size(); - print $out "Diff was too long, printing just a summary.\n\n"; - system 'git', 'log', @rev_list_options, "$old..$new"; - } - } elsif ($lca eq $new) { - # Rewind - $subj .= ' Branch rewound'; - print $out "Rewound branch $ref ($old -> $new).\n\n"; - most_recent(); +sub update_ref($$$) +{ + my ($ref, $old, $new) = @_; + $old ne $new or return; + my ($type, $name) = ($ref =~ m{^refs/([^/]*)/(.*)}) or return; + + my $out = File::Temp->new() or die; + my $outname = $out->filename; + $out->autoflush(1); + close STDOUT; + open STDOUT, '>&', $out or die; + + my $headers = { + 'X-Git-Repo' => $repo, + 'X-Git-Old-SHA' => $old, + 'X-Git-New-SHA' => $new, + }; + + my $send; + if ($type eq 'heads') { $send = update_branch($name, $old, $new, $out, $headers); } + $out->close(); + $send or return; + + if (defined $mail_to) { + close STDIN; + open STDIN, '<', $outname; + my @mutt = ( + 'mutt', + '-F/dev/null', + '-x', + '-e', 'set charset="utf-8"', + '-e', 'set send_charset="us-ascii:iso-8859-2:utf-8"', + '-s', $headers->{'Subject'}, + ); + delete $headers->{'Subject'}; + push @mutt, map { ('-e', "my_hdr $_: " . $headers->{$_}) } keys %$headers; + system @mutt, $mail_to; } else { - # Otherwise it is a rebase - $subj .= ' Branch rebased'; - print $out "Rebased branch $ref ($old -> $new).\n\n"; - print $out "Commits from common ancestor:\n\n"; - system 'git', 'rev-list', @rev_list_options, $new, "^$old"; + open STDOUT, '>&', \*ORIG_STDOUT; + print map { "$_: " . $headers->{$_} . "\n" } sort keys %$headers; + print "\n"; + system 'cat', $outname; + print "\n"; } } - -$out->close(); -if (defined $mail_to) { - close STDIN; - open STDIN, '<', $outname; - system 'mutt', - '-F/dev/null', - '-x', - '-e', 'set charset="utf-8"', - '-e', 'set send_charset="us-ascii:iso-8859-2:utf-8"', - '-e', "my_hdr X-Git-Repo: $repo", - '-e', "my_hdr X-Git-Branch: $ref", - '-e', "my_hdr X-Git-Old-SHA: $old", - '-e', "my_hdr X-Git-New-SHA: $new", - '-s', $subj, - $mail_to; -} else { - open STDOUT, '>&', \*ORIG_STDOUT; - print "Subject: $subj\n\n"; - system 'cat', $outname; -} -- 2.39.5