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SubjectRe: Changelogs on kernel.org
> - Added an usage note
> - Changed CMODE environment variable for a command line argument

Thanks, but the idea behind CMODE is that it's possible to set the
output mode and still have the script act both as a filter and file
eater (multiple changelogs on cmdline are ok of course) w/o having
to handle the eating "explicitly."

Plus one can put "export CMODE=something" in ~/.profile and forget
about the modes entirely.

Here comes 0.92 (s/LOWER CAPS/lower case/ as pointed out by
Kai Henningsen). Let's call it a candidate for inclusion in
scripts/. Linus?

Take care,
T.


#!/usr/bin/perl -w
#
# This Perl script is meant to simplify/beautify BK ChangeLogs
# for the linux kernel.
#
# (C) Copyright 2002 by Matthias Andree <matthias.andree@gmx.de>,
# Marcus Alanen <maalanen@abo.fi>,
# Tomas Szepe <szepe@pinerecords.com>
#
# Version 0.92.
# (Please don't bump this if you've just added another email-to-name
# mapping entry to the db.)
#
# ------------------------------------------------------------------
# Distribution of this script is permitted under the terms of the
# GNU General Public License (GNU GPL) v2.
# ------------------------------------------------------------------
#
# This program expects its input in the following format:
# (E-Mail Addresses MUST NOT bear leading whitespace!)
#
# <email@ddr.ess>
# changelog text
# more changelog text
# <email@ddr.ess>
# yet another changelog
# <another@add.ress>
# changelog #3
# more lines
#
# Groups and sorts the entries by email address:
#
# another@add.ress:
# changelog #3
# email@ddr.ess
# changelog text
# yet another changelog
#
# There are three different modes:
# - Short mode (one changelog == one line)
# - Full mode (changelogs separated by dashed line)
# - Original mode (one line consisting of changelog and author)
#
# Where possible, also adds the real name of the author using
# a static hash %addresses
#
use strict;

# CMODE environment variable selects output mode:
# 0 for short, 1 for full, 2 for "original changelog"
# (default is 2 if $CMODE unset)
#
my $mode = 2;
foreach my $en (keys(%ENV)) {
if ($en eq "CMODE") {
$mode = $ENV{CMODE};
if ($mode ne "0" && $mode ne "1" && $mode ne "2") {
print "CMODE has to be 0 for short, 1 for full, 2 for orig. Undefined defaults to 2.\n";
die();
}
last;
}
}
# minimum space between entry and author for the original mode
my $space = 5;

# The key is the email address *in lower case*,
# the value is the real name of the person.
#
my %addresses = (
'aia21@cantab.net' => 'Anton Altaparmakov',
'ak@muc.de' => 'Andi Kleen',
'akpm@zip.com.au' => 'Andrew Morton',
'alan@lxorguk.ukuu.org.uk' => 'Alan Cox',
'andrea@suse.de' => 'Andrea Arcangeli',
'ankry@green.mif.pg.gda.pl' => 'Andrzej Krzysztofowicz',
'axboe@suse.de' => 'Jens Axboe',
'bgerst@didntduck.org' => 'Brian Gerst',
'dalecki@evision-ventures.com' => 'Martin Dalecki',
'davem@redhat.com' => 'David S. Miller',
'davidel@xmailserver.org' => 'Davide Libenzi',
'green@namesys.com' => 'Oleg Drokin',
'hch@infradead.org' => 'Christoph Hellwig',
'jgarzik@mandrakesoft.com' => 'Jeff Garzik',
'jsimmons@heisenberg.transvirtual.com' => 'James Simmons',
'jsimmons@transvirtual.com' => 'James Simmons',
'kaos@ocs.com.au' => 'Keith Owens',
'lm@bitmover.com' => 'Larry McVoy',
'manfred@colorfullife.com' => 'Manfred Spraul',
'neilb@cse.unsw.edu.au' => 'Neil Brown',
'paulus@samba.org' => 'Paul Mackerras',
'perex@suse.cz' => 'Jaroslav Kysela',
'rgooch@ras.ucalgary.ca' => 'Richard Gooch',
'rmk@arm.linux.org.uk' => 'Russell King',
'szepe@pinerecords.com' => 'Tomas Szepe',
'torvalds@transmeta.com' => 'Linus Torvalds',
'viro@math.psu.edu' => 'Alexander Viro',
'~~~~thisentrylastforconvenience~~~~' => 'Cesar Brutus Anonymous'
);
my %people = ();
my $addr = "";
my @cur = ();

sub append_item()
{
if (!$addr) {
return;
}
if (!$people{$addr}) {
@{$people{$addr}} = ();
}
push @{$people{$addr}}, [@cur];
@cur = ();
}
# get name associated to an email address
sub rmap_address
{
my @o = map {defined $addresses{lc $_} ? $addresses{lc $_} : $_ } @_;
return wantarray ? @o : $o[0];
}
sub print_items($)
{
my $person = $_[0];
my $realname = rmap_address($person);
my @items = @{$people{$person}};
# Vain attempt to sort patches from one address
@items = sort @items;
if ($mode == 0 or $mode == 1) {
if ($realname ne $person) {
print "$realname ";
}
print "<$person>\n";
}
while ($_ = shift @items) {
if ($mode == 0) {
print "\to " . @$_[0];
} elsif ($mode == 1) {
print "\t------------------------------------------------------------\n";
foreach $_ (@$_) {
print "\t$_";
}
} elsif ($mode == 2) {
$_ = @$_[0];
chop;
$_ = "o $_";
# Split it onto two lines if necessary
if (length("$_ . $realname") > 76 - $space) {
print "$_\n" . " " x (76 - length($realname)) . "$realname\n";
} else {
print "$_" . " " x (76 - length($realname) - length($_)) . "$realname\n";
}
}
}
}
while (<>)
{
# Match address
if (/^<([^>]+)>/) {
# Add old item (if any) before beginning new
append_item();
$addr = $1;
} elsif ($addr) {
# Add line to patch
s/^\s*(.*)\s*$/$1/;
s/\[?PATCH\]?\s*//i;
push @cur, "$_\n";
} else {
# Header information
print;
}
}
append_item();
# Print the information
foreach $addr (sort keys %people) {
print_items($addr);
if ($mode != 2) { print "\n"; }
}
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