Merge "Script to fix license headers and copyrights in Java sources"

3 files changed, 438 insertions, 0 deletions

diff --git a/tools/fix-headers.pl b/tools/fix-headers.pl
new file mode 100755
index 0000000000..62141b34bd
--- /dev/null
+++ b/tools/fix-headers.pl
@@ -0,0 +1,343 @@
+#!/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";
+	}
+}
+
diff --git a/tools/fix-headers.tst b/tools/fix-headers.tst
new file mode 100644
index 0000000000..c47bba969b
--- /dev/null
+++ b/tools/fix-headers.tst
@@ -0,0 +1,11 @@
+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.
+
diff --git a/tools/rewrite-history.sh b/tools/rewrite-history.sh
new file mode 100644
index 0000000000..cf13cba625
--- /dev/null
+++ b/tools/rewrite-history.sh
@@ -0,0 +1,84 @@
+#!/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