From 12e2ccd5109cc1efaf4fa48092d50e5a9a211919 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C5=82awomir=20Nizio?= <poczta-sn@gazeta.pl>
Date: Tue, 23 May 2017 21:01:01 +0200
Subject: [PATCH] git-hooks: new scripts

---
 git-hooks/overlays-commit-msg.pl         | 84 ++++++++++++++++++++++++
 git-hooks/prepare-commit-msg.sab-overlay | 20 ++++++
 2 files changed, 104 insertions(+)
 create mode 100755 git-hooks/overlays-commit-msg.pl
 create mode 100755 git-hooks/prepare-commit-msg.sab-overlay

diff --git a/git-hooks/overlays-commit-msg.pl b/git-hooks/overlays-commit-msg.pl
new file mode 100755
index 0000000..3e2ae75
--- /dev/null
+++ b/git-hooks/overlays-commit-msg.pl
@@ -0,0 +1,84 @@
+#!/usr/bin/env perl
+# This code is licenced GPLv2 or newer.
+
+use warnings;
+use strict;
+use 5.010;
+
+my $g_thres = shift // 3;
+
+sub set_atoms {
+	my %atoms = ();
+	my $fh = shift;
+	while (my $line = <$fh>) {
+		chomp $line;
+		my @words = split(' ', $line, 2);
+		next if $words[0] eq "??"; # allow "dangling" files
+		my $what = $words[1];
+		@words = split(m:/:, $what);
+		my $pkg;
+		if (@words >= 2) {
+			$pkg = join("/", @words[0..1]);
+		} else {
+			$pkg = $words[0]
+		}
+		$atoms{$pkg} = 1;
+	}
+	keys %atoms
+}
+
+sub num {
+	my $what = shift;
+	my @arr = @_;
+	my $num = 0;
+	for (@arr) {
+		$num++ if index($_, "$what-") == 0
+	}
+	$num
+}
+
+sub replace {
+	my $atom = shift;
+	my @arr = @_;
+	my @new_arr;
+	for my $item (@arr) {
+		if( index($item, $atom) == 0 ) {
+			1;
+		} else {
+			push @new_arr, $item;
+		}
+	}
+	push @new_arr, "$atom*";
+	@new_arr;
+}
+
+# try to make (a*, b, c*) from (a-1, a, a-2, b, c, c-1),
+# for example, if numberOf(/^a-?/) >= $thres
+sub do_reduce {
+	my $thres = shift;
+	my @atoms = @_;
+	my @processed_atoms = @atoms;
+	for my $atom (@atoms) {
+		@processed_atoms = replace($atom, @processed_atoms)
+			if (num($atom, @processed_atoms) >= $thres);
+	}
+	@processed_atoms
+}
+
+#my @atoms = set_atoms(*DATA);
+my @atoms = set_atoms(*STDIN);
+@atoms = do_reduce($g_thres, @atoms);
+say join ",", sort @atoms;
+
+__DATA__
+ M net-p2p/transmission-base/metadata.xml
+ M net-p2p/transmission-cli/metadata.xml
+ M net-p2p/transmission-daemon/metadata.xml
+ M net-p2p/transmission-gtk/metadata.xml
+ M net-p2p/transmission-qt4/metadata.xml
+ M net-p2p/transmission/metadata.xml
+ M cat/pkg-1
+ M cat/pkg-2
+ M cat/pkg
+ M net-p2p/nic
+?? betr.pl
diff --git a/git-hooks/prepare-commit-msg.sab-overlay b/git-hooks/prepare-commit-msg.sab-overlay
new file mode 100755
index 0000000..ee5f1f7
--- /dev/null
+++ b/git-hooks/prepare-commit-msg.sab-overlay
@@ -0,0 +1,20 @@
+#!/bin/sh
+# This code is licenced GPLv2 or newer.
+
+# An example hook script to prepare the commit log message.
+# Called by "git commit" with the name of the file that has the
+# commit message, followed by the description of the commit
+# message's source.  The hook's purpose is to edit the commit
+# message file.  If the hook fails with a non-zero status,
+# the commit is aborted.
+
+_out=$(git status -s | overlays-commit-msg.pl)
+_ver=$(git status -s | sed -rn 's/^[AR] *(.* -> )?.*-([^-]+)\.ebuild$/\2/p' | head -n 1)
+_bump=${_ver:+version bump to $_ver}
+
+case $2 in
+#message)
+#	sed -i -e "1s:^:[$_subdir/$_curdir] :" "$1" ;;
+"")
+	sed -i -e "1i[$_out] $_bump" "$1" ;;
+esac