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Script to fix license headers and copyrights in Java sources 

The script merges explicit copyright statements in all Java
sources with author information from git history, updates the
copyright headers accordingly, and updates the license headers
to EDL.  For recognized copyright formats see the test data in
tools/fix-headers.tst.

To fix headers only in the current working directory:

  ./tools/fix-headers.pl

To fix the headers for all revisions (don't do this if you don't
understand the implications of rewriting history) run:

  ./tools/rewrite-history.sh

Authors are mapped to employer copyright statements through a
hardcoded table in the top of the script.  This is a crude but
simple way to list date ranges under which certain changes need
to be attributed to copyright holders other than the author.

Change-Id: I654d758658cded02d91324c385f336bcc57fd85f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
stable-0.7
Matthias Sohn 15 years ago committed by Shawn O. Pearce
parent
19126f70e9
commit
578225870a
3 changed files with 438 additions and 0 deletions
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  1. 343
      tools/fix-headers.pl
  2. 11
      tools/fix-headers.tst
  3. 84
      tools/rewrite-history.sh

343
tools/fix-headers.pl
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#!/usr/bin/perl
# ------------------------------------------------------------
# This script fixes the license headers of all Java sources
# to use the Eclipse EDL license template and updates the
# copyright statements using author information from git blame
#
# To fix this in all revisions rewrite the history
# git filter-branch --tree-filter 'fixHeaders.pl' HEAD
# ------------------------------------------------------------
use strict;
# Table of author names, start date, end date, actual copyright owner.
#
my @author_employers = (
[ qr/spearce\@spearce.org/, 2008, 8, 9999, 12, 'Google Inc.'],
[ qr/\@(.*\.|)google.com/, 0, 0, 9999, 12, 'Google Inc.'],
);
# License text itself.
#
my $license_text = <<'EOF';
and other copyright owners as documented in the project's IP log.
This program and the accompanying materials are made available
under the terms of the Eclipse Distribution License v1.0 which
accompanies this distribution, is reproduced below, and is
available at http://www.eclipse.org/org/documents/edl-v10.php
All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, are permitted provided that the following
conditions are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
- Neither the name of the Eclipse Foundation, Inc. nor the
names of its contributors may be used to endorse or promote
products derived from this software without specific prior
written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
EOF
my @files = @ARGV;
unless (@files) {
open( F, '-|', 'git ls-files' );
@files = <F>;
chop @files;
close F;
}
foreach (@files) {
if (/\.java$/ || $_ eq 'LICENSE') {
next if $_ eq 'org.eclipse.jgit/src/org/eclipse/jgit/util/Base64.java';
update_file(\&java_file, $_);
} elsif (/pom\.xml$/) {
update_file(\&pom_file, $_);
} elsif (/\.sh$/) {
update_file(\&sh_file, $_);
}
}
sub java_file
{
my $fd = shift;
my $header = '';
my $preamble = '';
# header is everything before package statement
while (<$fd>) {
if (/^package /) {
$preamble = $_;
last;
}
$header .= $_;
}
# preamble is everything with blanks or imports
while (<$fd>) {
$preamble .= $_;
last unless (/^import / || /^$/);
}
my $lineno = $. - 1;
return ($header, $preamble, $lineno,
"/*\n", sub { s/^/ */mg }, " */\n");
}
sub pom_file
{
my $fd = shift;
my $header = '';
my $preamble = '';
# header is everything before project
while (<$fd>) {
if (/<project/) {
$preamble = $_;
last;
}
$header .= $_;
}
my $lineno = $. - 1;
return ($header, $preamble, $lineno,
qq{<?xml version="1.0" encoding="UTF-8"?>\n<!--\n},
sub { s/^(.)/ $1/mg },
qq{-->\n});
}
sub sh_file
{
my $fd = shift;
my $top = <$fd>;
my $header = '';
my $preamble = '';
while (<$fd>) {
if (/^#/) {
$header .= $_;
next;
}
$preamble = $_;
last;
}
my $lineno = $. - 1;
return ($header, $preamble, $lineno, $top, sub { s/^/#/mg }, "");
}
sub update_file
{
my $func = shift;
my $old_file = shift;
my $new_file = "$old_file.license.$$";
open(I, '<', $old_file);
my ($header, $preamble, $lineno,
$top, $fmt, $btm) = &{$func}(\*I);
my %all_years;
my %author_years;
my %minyear;
my %maxyear;
# find explicit copyright statements in sources
my @lines = split( /\n/, $header );
foreach my $line ( @lines ) {
# * Copyright (c) 2008, Example Company Inc.
# * Copyright (c) 2008, Joe Developer <joe.dev@example.org>
# * Copyright (c) 2008, 2009 Joe Developer <joe.dev@example.org>
# * Copyright (c) 2005-2009 Joe Developer <joe.dev@example.org>
# * Copyright (c) 2008, 2009 Other Examples Inc.
# * Copyright (c) 2008-2010 Example Company Inc.
# * Copyright (C) 2009-2010, Yet More Examples Ltd.
if( $line =~ m/Copyright \(c\) (\d{4})(?:\s*[,-]\s*(\d{4}))?,?\s*([^<>]+)\s*(<.*?>)?/i ) {
my ($y, $y2, $n, $e) = ($1, $2, $3, $4);
my $year = trim($y);
my $author_name = trim($n);
my $author_email = trim($e);
my $who = $author_name;
$who .= " $author_email" if $author_email;
update_author_info(\%minyear, \%maxyear, \%all_years, \%author_years, $who, $year);
if (my $year2 = $y2) {
update_author_info(\%minyear, \%maxyear, \%all_years, \%author_years, $who, $year2);
}
}
}
if ($old_file eq 'LICENSE') {
} else {
# add implicit copyright statements from authors found in git blame
my (%line_counts, %line_authors);
my ($last_commit, $author_name, $author_email);
my @blame_args = ('git', 'blame', "-L$lineno,", '-C', '-w', '-p');
push(@blame_args, $ENV{'GIT_COMMIT'}) if $ENV{'GIT_COMMIT'};
push(@blame_args, '--', $old_file);
open( B, '-|', @blame_args);
while (<B>) {
chop;
if (/^([0-9a-f]{40}) \d+ \d+ (\d+)$/) {
$last_commit = $1;
$line_counts{$1} += $2;
next;
}
if (/^author (.*)$/) {
$author_name = trim($1);
next;
}
if (/^author-mail (<.*>)$/) {
$author_email = trim($1);
next;
}
if (/^author-time (\d+)$/) {
# skip uncommitted changes
my $who = "$author_name $author_email";
next if $who eq 'Not Committed Yet <not.committed.yet>';
my @tm = localtime($1);
my $year = $tm[5] + 1900;
my $mon = $tm[4] + 1;
$who = translate_author($who, $year, $mon);
$line_authors{$last_commit} = [$who, $year, $mon];
}
}
close B;
my %author_linecounts;
foreach $last_commit (keys %line_counts) {
my $who = $line_authors{$last_commit}[0];
next unless $who;
$author_linecounts{$who} += $line_counts{$last_commit};
}
my $sz = 100;
my $count_big = 0;
foreach (values %author_linecounts) {
$count_big++ if $_ >= $sz;
}
my $added_count = 0;
foreach (values %line_authors) {
my ($who, $year, $mon) = @$_;
next if ($count_big && $author_linecounts{$who} < $sz);
$all_years{$year} = 1;
update_author_info(\%minyear, \%maxyear, \%all_years, \%author_years, $who, $year, $mon);
}
}
# rewrite file
open( O, '>', $new_file );
print O $top;
my %used_author;
foreach my $year ( sort { $a cmp $b } keys %all_years ) {
foreach my $who ( sort keys %author_years ) {
next if $used_author{$who}++;
local $_ = format_copyright($minyear{$who}, $maxyear{$who}, $who);
&{$fmt}();
print O;
}
}
local $_ = $license_text;
&{$fmt}();
print O;
print O $btm;
print O "\n";
print O $preamble;
print O while <I>;
close I;
close O;
rename( $new_file, $old_file );
}
sub trim($)
{
my $string = shift;
$string =~ s/^\s+//;
$string =~ s/\s+$//;
return $string;
}
sub update_author_info
{
my ($minyear_ref, $maxyear_ref, $all_years_ref, $author_years_ref, $who, $year, $mon) = @_;
$who = translate_author($who, $year, $mon);
$all_years_ref->{$year} = 1;
$author_years_ref->{$who}{$year} = 1;
my $y = $minyear_ref->{$who};
if ($y < 1900) {
$y = 9999;
}
if ($year < $y) {
$minyear_ref->{$who} = $year;
}
$y = $maxyear_ref->{$who};
if ($year > $y) {
$maxyear_ref->{$who} = $year;
}
}
sub date_cmp
{
my ($a_year, $a_mon, $b_year, $b_mon) = @_;
if ($a_year < $b_year) {
return -1;
} elsif ($a_year == $b_year) {
return ($a_mon <=> $b_mon);
} else {
return 1;
}
}
sub translate_author
{
my ($who, $year, $mon) = @_;
return $who if not defined $mon;
foreach my $spec (@author_employers) {
next unless $who =~ $spec->[0];
next if (date_cmp($year, $mon, $spec->[1], $spec->[2]) < 0);
next if (date_cmp($year, $mon, $spec->[3], $spec->[4]) > 0);
return $spec->[5];
}
return $who;
}
sub format_copyright {
my ($minyear, $maxyear, $who) = @_;
if ($minyear < $maxyear) {
return " Copyright (C) $minyear-$maxyear, $who\n";
} else {
return " Copyright (C) $minyear, $who\n";
}
}

11
tools/fix-headers.tst
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regex without named back references
m/.*Copyright \(c\) ((\d{4})\s*[,-]\s*(\d{4})?)\,?(([^\r\<\>\,]*)(\<.*\>)?)\s*/i
* Copyright (c) 2008, Example Company Inc.
* Copyright (c) 2008, Joe Developer <joe.dev@example.org>
* Copyright (c) 2008, 2009 Joe Developer <joe.dev@example.org>
* Copyright (c) 2005-2009 Joe Developer <joe.dev@example.org>
* Copyright (c) 2008, 2009 Other Examples Inc.
* Copyright (c) 2008-2010 Example Company Inc.
* Copyright (C) 2009-2010, Yet More Examples Ltd.

84
tools/rewrite-history.sh
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#!/bin/sh
# Copyright (C) 2010, Matthias Sohn <matthias.sohn@sap.com>
# and other copyright owners as documented in the project's IP log.
#
# This program and the accompanying materials are made available
# under the terms of the Eclipse Distribution License v1.0 which
# accompanies this distribution, is reproduced below, and is
# available at http://www.eclipse.org/org/documents/edl-v10.php
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following
# conditions are met:
#
# - Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
#
# - Neither the name of the Eclipse Foundation, Inc. nor the
# names of its contributors may be used to endorse or promote
# products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
TOOLS_DIR=$(dirname $0)
TOOLS_DIR=$(cd $TOOLS_DIR && pwd)
export TOOLS_DIR
MAP_OF_COMMITS=$(pwd)/commit.map
export MAP_OF_COMMITS
: >$MAP_OF_COMMITS
git filter-branch \
--tree-filter '
export GIT_COMMIT
$TOOLS_DIR/fix-headers.pl
if [ -f tools/graft-old-history.sh ]; then
i=$(map 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae)
perl -pi -e "
s/^POST=.*/POST=$i/;
" tools/graft-old-history.sh
fi
' \
--env-filter '
if [ 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae = $GIT_COMMIT ]; then
export GIT_AUTHOR_NAME="Git Development Community"
export GIT_AUTHOR_EMAIL=git@vger.kernel.org
fi
' \
--parent-filter '
if [ 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae = $GIT_COMMIT ]; then
cat >/dev/null
else
cat
fi
' \
--commit-filter '
n=$(git commit-tree "$@")
echo $GIT_COMMIT=$n >>$MAP_OF_COMMITS
echo $n
' \
-d /tmp/jgit-rewrite-history-$$ \
$(git for-each-ref --format='%(refname)' refs/heads refs/changes) \
--not 3a2dd9921c8a08740a9e02c421469e5b1a9e47cb
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