xref: /openbmc/qemu/scripts/get_maintainer.pl (revision 709395f8)
1#!/usr/bin/env perl
2# (c) 2007, Joe Perches <joe@perches.com>
3#           created from checkpatch.pl
4#
5# Print selected MAINTAINERS information for
6# the files modified in a patch or for a file
7#
8# usage: perl scripts/get_maintainer.pl [OPTIONS] <patch>
9#        perl scripts/get_maintainer.pl [OPTIONS] -f <file>
10#
11# Licensed under the terms of the GNU GPL License version 2
12
13use strict;
14use warnings;
15
16my $P = $0;
17my $V = '0.26';
18
19use Getopt::Long qw(:config no_auto_abbrev);
20
21my $lk_path = "./";
22my $email = 1;
23my $email_usename = 1;
24my $email_maintainer = 1;
25my $email_reviewer = 1;
26my $email_list = 1;
27my $email_subscriber_list = 0;
28my $email_git = 0;
29my $email_git_all_signature_types = 0;
30my $email_git_blame = 0;
31my $email_git_blame_signatures = 1;
32my $email_git_fallback = 1;
33my $email_git_min_signatures = 1;
34my $email_git_max_maintainers = 5;
35my $email_git_min_percent = 5;
36my $email_git_since = "1-year-ago";
37my $email_hg_since = "-365";
38my $interactive = 0;
39my $email_remove_duplicates = 1;
40my $email_use_mailmap = 1;
41my $output_multiline = 1;
42my $output_separator = ", ";
43my $output_roles = 0;
44my $output_rolestats = 1;
45my $scm = 0;
46my $web = 0;
47my $subsystem = 0;
48my $status = 0;
49my $keywords = 1;
50my $sections = 0;
51my $file_emails = 0;
52my $from_filename = 0;
53my $pattern_depth = 0;
54my $version = 0;
55my $help = 0;
56
57my $vcs_used = 0;
58
59my $exit = 0;
60
61my %commit_author_hash;
62my %commit_signer_hash;
63
64# Signature types of people who are either
65# 	a) responsible for the code in question, or
66# 	b) familiar enough with it to give relevant feedback
67my @signature_tags = ();
68push(@signature_tags, "Signed-off-by:");
69push(@signature_tags, "Reviewed-by:");
70push(@signature_tags, "Acked-by:");
71
72my $signature_pattern = "\(" . join("|", @signature_tags) . "\)";
73
74# rfc822 email address - preloaded methods go here.
75my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])";
76my $rfc822_char = '[\\000-\\377]';
77
78# VCS command support: class-like functions and strings
79
80my %VCS_cmds;
81
82my %VCS_cmds_git = (
83    "execute_cmd" => \&git_execute_cmd,
84    "available" => '(which("git") ne "") && (-d ".git")',
85    "find_signers_cmd" =>
86	"git log --no-color --follow --since=\$email_git_since " .
87	    '--format="GitCommit: %H%n' .
88		      'GitAuthor: %an <%ae>%n' .
89		      'GitDate: %aD%n' .
90		      'GitSubject: %s%n' .
91		      '%b%n"' .
92	    " -- \$file",
93    "find_commit_signers_cmd" =>
94	"git log --no-color " .
95	    '--format="GitCommit: %H%n' .
96		      'GitAuthor: %an <%ae>%n' .
97		      'GitDate: %aD%n' .
98		      'GitSubject: %s%n' .
99		      '%b%n"' .
100	    " -1 \$commit",
101    "find_commit_author_cmd" =>
102	"git log --no-color " .
103	    '--format="GitCommit: %H%n' .
104		      'GitAuthor: %an <%ae>%n' .
105		      'GitDate: %aD%n' .
106		      'GitSubject: %s%n"' .
107	    " -1 \$commit",
108    "blame_range_cmd" => "git blame -l -L \$diff_start,+\$diff_length \$file",
109    "blame_file_cmd" => "git blame -l \$file",
110    "commit_pattern" => "^GitCommit: ([0-9a-f]{40,40})",
111    "blame_commit_pattern" => "^([0-9a-f]+) ",
112    "author_pattern" => "^GitAuthor: (.*)",
113    "subject_pattern" => "^GitSubject: (.*)",
114);
115
116my %VCS_cmds_hg = (
117    "execute_cmd" => \&hg_execute_cmd,
118    "available" => '(which("hg") ne "") && (-d ".hg")',
119    "find_signers_cmd" =>
120	"hg log --date=\$email_hg_since " .
121	    "--template='HgCommit: {node}\\n" .
122	                "HgAuthor: {author}\\n" .
123			"HgSubject: {desc}\\n'" .
124	    " -- \$file",
125    "find_commit_signers_cmd" =>
126	"hg log " .
127	    "--template='HgSubject: {desc}\\n'" .
128	    " -r \$commit",
129    "find_commit_author_cmd" =>
130	"hg log " .
131	    "--template='HgCommit: {node}\\n" .
132		        "HgAuthor: {author}\\n" .
133			"HgSubject: {desc|firstline}\\n'" .
134	    " -r \$commit",
135    "blame_range_cmd" => "",		# not supported
136    "blame_file_cmd" => "hg blame -n \$file",
137    "commit_pattern" => "^HgCommit: ([0-9a-f]{40,40})",
138    "blame_commit_pattern" => "^([ 0-9a-f]+):",
139    "author_pattern" => "^HgAuthor: (.*)",
140    "subject_pattern" => "^HgSubject: (.*)",
141);
142
143my $conf = which_conf(".get_maintainer.conf");
144if (-f $conf) {
145    my @conf_args;
146    open(my $conffile, '<', "$conf")
147	or warn "$P: Can't find a readable .get_maintainer.conf file $!\n";
148
149    while (<$conffile>) {
150	my $line = $_;
151
152	$line =~ s/\s*\n?$//g;
153	$line =~ s/^\s*//g;
154	$line =~ s/\s+/ /g;
155
156	next if ($line =~ m/^\s*#/);
157	next if ($line =~ m/^\s*$/);
158
159	my @words = split(" ", $line);
160	foreach my $word (@words) {
161	    last if ($word =~ m/^#/);
162	    push (@conf_args, $word);
163	}
164    }
165    close($conffile);
166    unshift(@ARGV, @conf_args) if @conf_args;
167}
168
169if (!GetOptions(
170		'email!' => \$email,
171		'git!' => \$email_git,
172		'git-all-signature-types!' => \$email_git_all_signature_types,
173		'git-blame!' => \$email_git_blame,
174		'git-blame-signatures!' => \$email_git_blame_signatures,
175		'git-fallback!' => \$email_git_fallback,
176		'git-min-signatures=i' => \$email_git_min_signatures,
177		'git-max-maintainers=i' => \$email_git_max_maintainers,
178		'git-min-percent=i' => \$email_git_min_percent,
179		'git-since=s' => \$email_git_since,
180		'hg-since=s' => \$email_hg_since,
181		'i|interactive!' => \$interactive,
182		'remove-duplicates!' => \$email_remove_duplicates,
183		'mailmap!' => \$email_use_mailmap,
184		'm!' => \$email_maintainer,
185		'r!' => \$email_reviewer,
186		'n!' => \$email_usename,
187		'l!' => \$email_list,
188		's!' => \$email_subscriber_list,
189		'multiline!' => \$output_multiline,
190		'roles!' => \$output_roles,
191		'rolestats!' => \$output_rolestats,
192		'separator=s' => \$output_separator,
193		'subsystem!' => \$subsystem,
194		'status!' => \$status,
195		'scm!' => \$scm,
196		'web!' => \$web,
197		'pattern-depth=i' => \$pattern_depth,
198		'k|keywords!' => \$keywords,
199		'sections!' => \$sections,
200		'fe|file-emails!' => \$file_emails,
201		'f|file' => \$from_filename,
202		'v|version' => \$version,
203		'h|help|usage' => \$help,
204		)) {
205    die "$P: invalid argument - use --help if necessary\n";
206}
207
208if ($help != 0) {
209    usage();
210    exit 0;
211}
212
213if ($version != 0) {
214    print("${P} ${V}\n");
215    exit 0;
216}
217
218if (-t STDIN && !@ARGV) {
219    # We're talking to a terminal, but have no command line arguments.
220    die "$P: missing patchfile or -f file - use --help if necessary\n";
221}
222
223$output_multiline = 0 if ($output_separator ne ", ");
224$output_rolestats = 1 if ($interactive);
225$output_roles = 1 if ($output_rolestats);
226
227if ($sections) {
228    $email = 0;
229    $email_list = 0;
230    $scm = 0;
231    $status = 0;
232    $subsystem = 0;
233    $web = 0;
234    $keywords = 0;
235    $interactive = 0;
236} else {
237    my $selections = $email + $scm + $status + $subsystem + $web;
238    if ($selections == 0) {
239	die "$P:  Missing required option: email, scm, status, subsystem or web\n";
240    }
241}
242
243if ($email &&
244    ($email_maintainer + $email_reviewer +
245     $email_list + $email_subscriber_list +
246     $email_git + $email_git_blame) == 0) {
247    die "$P: Please select at least 1 email option\n";
248}
249
250if (!top_of_tree($lk_path)) {
251    die "$P: The current directory does not appear to be "
252	. "a QEMU source tree.\n";
253}
254
255## Read MAINTAINERS for type/value pairs
256
257my @typevalue = ();
258my %keyword_hash;
259
260open (my $maint, '<', "${lk_path}MAINTAINERS")
261    or die "$P: Can't open MAINTAINERS: $!\n";
262while (<$maint>) {
263    my $line = $_;
264
265    if ($line =~ m/^(.):\s*(.*)/) {
266	my $type = $1;
267	my $value = $2;
268
269	##Filename pattern matching
270	if ($type eq "F" || $type eq "X") {
271	    $value =~ s@\.@\\\.@g;       ##Convert . to \.
272	    $value =~ s/\*/\.\*/g;       ##Convert * to .*
273	    $value =~ s/\?/\./g;         ##Convert ? to .
274	    ##if pattern is a directory and it lacks a trailing slash, add one
275	    if ((-d $value)) {
276		$value =~ s@([^/])$@$1/@;
277	    }
278	} elsif ($type eq "K") {
279	    $keyword_hash{@typevalue} = $value;
280	}
281	push(@typevalue, "$type:$value");
282    } elsif (!/^(\s)*$/) {
283	$line =~ s/\n$//g;
284	push(@typevalue, $line);
285    }
286}
287close($maint);
288
289
290#
291# Read mail address map
292#
293
294my $mailmap;
295
296read_mailmap();
297
298sub read_mailmap {
299    $mailmap = {
300	names => {},
301	addresses => {}
302    };
303
304    return if (!$email_use_mailmap || !(-f "${lk_path}.mailmap"));
305
306    open(my $mailmap_file, '<', "${lk_path}.mailmap")
307	or warn "$P: Can't open .mailmap: $!\n";
308
309    while (<$mailmap_file>) {
310	s/#.*$//; #strip comments
311	s/^\s+|\s+$//g; #trim
312
313	next if (/^\s*$/); #skip empty lines
314	#entries have one of the following formats:
315	# name1 <mail1>
316	# <mail1> <mail2>
317	# name1 <mail1> <mail2>
318	# name1 <mail1> name2 <mail2>
319	# (see man git-shortlog)
320
321	if (/^([^<]+)<([^>]+)>$/) {
322	    my $real_name = $1;
323	    my $address = $2;
324
325	    $real_name =~ s/\s+$//;
326	    ($real_name, $address) = parse_email("$real_name <$address>");
327	    $mailmap->{names}->{$address} = $real_name;
328
329	} elsif (/^<([^>]+)>\s*<([^>]+)>$/) {
330	    my $real_address = $1;
331	    my $wrong_address = $2;
332
333	    $mailmap->{addresses}->{$wrong_address} = $real_address;
334
335	} elsif (/^(.+)<([^>]+)>\s*<([^>]+)>$/) {
336	    my $real_name = $1;
337	    my $real_address = $2;
338	    my $wrong_address = $3;
339
340	    $real_name =~ s/\s+$//;
341	    ($real_name, $real_address) =
342		parse_email("$real_name <$real_address>");
343	    $mailmap->{names}->{$wrong_address} = $real_name;
344	    $mailmap->{addresses}->{$wrong_address} = $real_address;
345
346	} elsif (/^(.+)<([^>]+)>\s*(.+)\s*<([^>]+)>$/) {
347	    my $real_name = $1;
348	    my $real_address = $2;
349	    my $wrong_name = $3;
350	    my $wrong_address = $4;
351
352	    $real_name =~ s/\s+$//;
353	    ($real_name, $real_address) =
354		parse_email("$real_name <$real_address>");
355
356	    $wrong_name =~ s/\s+$//;
357	    ($wrong_name, $wrong_address) =
358		parse_email("$wrong_name <$wrong_address>");
359
360	    my $wrong_email = format_email($wrong_name, $wrong_address, 1);
361	    $mailmap->{names}->{$wrong_email} = $real_name;
362	    $mailmap->{addresses}->{$wrong_email} = $real_address;
363	}
364    }
365    close($mailmap_file);
366}
367
368## use the filenames on the command line or find the filenames in the patchfiles
369
370my @files = ();
371my @range = ();
372my @keyword_tvi = ();
373my @file_emails = ();
374
375if (!@ARGV) {
376    push(@ARGV, "&STDIN");
377}
378
379foreach my $file (@ARGV) {
380    if ($file ne "&STDIN") {
381	##if $file is a directory and it lacks a trailing slash, add one
382	if ((-d $file)) {
383	    $file =~ s@([^/])$@$1/@;
384	} elsif (!(stat $file)) {
385	    die "$P: file '${file}' not found: $!\n";
386	}
387    }
388    if ($from_filename) {
389	push(@files, $file);
390	if ($file ne "MAINTAINERS" && -f $file && ($keywords || $file_emails)) {
391	    open(my $f, '<', $file)
392		or die "$P: Can't open $file: $!\n";
393	    my $text = do { local($/) ; <$f> };
394	    close($f);
395	    if ($keywords) {
396		foreach my $line (keys %keyword_hash) {
397		    if ($text =~ m/$keyword_hash{$line}/x) {
398			push(@keyword_tvi, $line);
399		    }
400		}
401	    }
402	    if ($file_emails) {
403		my @poss_addr = $text =~ m$[A-Za-zÀ-ÿ\"\' \,\.\+-]*\s*[\,]*\s*[\(\<\{]{0,1}[A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+\.[A-Za-z0-9]+[\)\>\}]{0,1}$g;
404		push(@file_emails, clean_file_emails(@poss_addr));
405	    }
406	}
407    } else {
408	my $file_cnt = @files;
409	my $lastfile;
410
411	open(my $patch, "< $file")
412	    or die "$P: Can't open $file: $!\n";
413
414	# We can check arbitrary information before the patch
415	# like the commit message, mail headers, etc...
416	# This allows us to match arbitrary keywords against any part
417	# of a git format-patch generated file (subject tags, etc...)
418
419	my $patch_prefix = "";			#Parsing the intro
420
421	while (<$patch>) {
422	    my $patch_line = $_;
423	    if (m/^\+\+\+\s+(\S+)/) {
424		my $filename = $1;
425		$filename =~ s@^[^/]*/@@;
426		$filename =~ s@\n@@;
427		$lastfile = $filename;
428		push(@files, $filename);
429		$patch_prefix = "^[+-].*";	#Now parsing the actual patch
430	    } elsif (m/^\@\@ -(\d+),(\d+)/) {
431		if ($email_git_blame) {
432		    push(@range, "$lastfile:$1:$2");
433		}
434	    } elsif ($keywords) {
435		foreach my $line (keys %keyword_hash) {
436		    if ($patch_line =~ m/${patch_prefix}$keyword_hash{$line}/x) {
437			push(@keyword_tvi, $line);
438		    }
439		}
440	    }
441	}
442	close($patch);
443
444	if ($file_cnt == @files) {
445	    warn "$P: file '${file}' doesn't appear to be a patch.  "
446		. "Add -f to options?\n";
447	}
448	@files = sort_and_uniq(@files);
449    }
450}
451
452@file_emails = uniq(@file_emails);
453
454my %email_hash_name;
455my %email_hash_address;
456my @email_to = ();
457my %hash_list_to;
458my @list_to = ();
459my @scm = ();
460my @web = ();
461my @subsystem = ();
462my @status = ();
463my %deduplicate_name_hash = ();
464my %deduplicate_address_hash = ();
465
466my @maintainers = get_maintainers();
467
468if (@maintainers) {
469    @maintainers = merge_email(@maintainers);
470    output(@maintainers);
471}
472
473if ($scm) {
474    @scm = uniq(@scm);
475    output(@scm);
476}
477
478if ($status) {
479    @status = uniq(@status);
480    output(@status);
481}
482
483if ($subsystem) {
484    @subsystem = uniq(@subsystem);
485    output(@subsystem);
486}
487
488if ($web) {
489    @web = uniq(@web);
490    output(@web);
491}
492
493exit($exit);
494
495sub range_is_maintained {
496    my ($start, $end) = @_;
497
498    for (my $i = $start; $i < $end; $i++) {
499	my $line = $typevalue[$i];
500	if ($line =~ m/^(.):\s*(.*)/) {
501	    my $type = $1;
502	    my $value = $2;
503	    if ($type eq 'S') {
504		if ($value =~ /(maintain|support)/i) {
505		    return 1;
506		}
507	    }
508	}
509    }
510    return 0;
511}
512
513sub range_has_maintainer {
514    my ($start, $end) = @_;
515
516    for (my $i = $start; $i < $end; $i++) {
517	my $line = $typevalue[$i];
518	if ($line =~ m/^(.):\s*(.*)/) {
519	    my $type = $1;
520	    my $value = $2;
521	    if ($type eq 'M') {
522		return 1;
523	    }
524	}
525    }
526    return 0;
527}
528
529sub get_maintainers {
530    %email_hash_name = ();
531    %email_hash_address = ();
532    %commit_author_hash = ();
533    %commit_signer_hash = ();
534    @email_to = ();
535    %hash_list_to = ();
536    @list_to = ();
537    @scm = ();
538    @web = ();
539    @subsystem = ();
540    @status = ();
541    %deduplicate_name_hash = ();
542    %deduplicate_address_hash = ();
543    if ($email_git_all_signature_types) {
544	$signature_pattern = "(.+?)[Bb][Yy]:";
545    } else {
546	$signature_pattern = "\(" . join("|", @signature_tags) . "\)";
547    }
548
549    # Find responsible parties
550
551    my %exact_pattern_match_hash = ();
552
553    foreach my $file (@files) {
554
555	my %hash;
556	my $tvi = find_first_section();
557	while ($tvi < @typevalue) {
558	    my $start = find_starting_index($tvi);
559	    my $end = find_ending_index($tvi);
560	    my $exclude = 0;
561	    my $i;
562
563	    #Do not match excluded file patterns
564
565	    for ($i = $start; $i < $end; $i++) {
566		my $line = $typevalue[$i];
567		if ($line =~ m/^(.):\s*(.*)/) {
568		    my $type = $1;
569		    my $value = $2;
570		    if ($type eq 'X') {
571			if (file_match_pattern($file, $value)) {
572			    $exclude = 1;
573			    last;
574			}
575		    }
576		}
577	    }
578
579	    if (!$exclude) {
580		for ($i = $start; $i < $end; $i++) {
581		    my $line = $typevalue[$i];
582		    if ($line =~ m/^(.):\s*(.*)/) {
583			my $type = $1;
584			my $value = $2;
585			if ($type eq 'F') {
586			    if (file_match_pattern($file, $value)) {
587				my $value_pd = ($value =~ tr@/@@);
588				my $file_pd = ($file  =~ tr@/@@);
589				$value_pd++ if (substr($value,-1,1) ne "/");
590				$value_pd = -1 if ($value =~ /^\.\*/);
591				if ($value_pd >= $file_pd &&
592				    range_is_maintained($start, $end) &&
593				    range_has_maintainer($start, $end)) {
594				    $exact_pattern_match_hash{$file} = 1;
595				}
596				if ($pattern_depth == 0 ||
597				    (($file_pd - $value_pd) < $pattern_depth)) {
598				    $hash{$tvi} = $value_pd;
599				}
600			    }
601			}
602		    }
603		}
604	    }
605	    $tvi = $end + 1;
606	}
607
608	foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
609	    add_categories($line);
610	    if ($sections) {
611		my $i;
612		my $start = find_starting_index($line);
613		my $end = find_ending_index($line);
614		for ($i = $start; $i < $end; $i++) {
615		    my $line = $typevalue[$i];
616		    if ($line =~ /^[FX]:/) {		##Restore file patterns
617			$line =~ s/([^\\])\.([^\*])/$1\?$2/g;
618			$line =~ s/([^\\])\.$/$1\?/g;	##Convert . back to ?
619			$line =~ s/\\\./\./g;       	##Convert \. to .
620			$line =~ s/\.\*/\*/g;       	##Convert .* to *
621		    }
622		    $line =~ s/^([A-Z]):/$1:\t/g;
623		    print("$line\n");
624		}
625		print("\n");
626	    }
627	}
628    }
629
630    if ($keywords) {
631	@keyword_tvi = sort_and_uniq(@keyword_tvi);
632	foreach my $line (@keyword_tvi) {
633	    add_categories($line);
634	}
635    }
636
637    foreach my $email (@email_to, @list_to) {
638	$email->[0] = deduplicate_email($email->[0]);
639    }
640
641    if ($email) {
642	if (! $interactive) {
643	    $email_git_fallback = 0 if @email_to > 0 || $email_git || $email_git_blame;
644	    if ($email_git_fallback) {
645	        print STDERR "get_maintainer.pl: No maintainers found, printing recent contributors.\n";
646	        print STDERR "get_maintainer.pl: Do not blindly cc: them on patches!  Use common sense.\n";
647	        print STDERR "\n";
648            }
649        }
650
651	foreach my $file (@files) {
652	    if ($email_git || ($email_git_fallback &&
653			       !$exact_pattern_match_hash{$file})) {
654	        vcs_file_signoffs($file);
655	    }
656	    if ($email_git_blame) {
657	        vcs_file_blame($file);
658	    }
659	}
660
661	foreach my $email (@file_emails) {
662	    my ($name, $address) = parse_email($email);
663
664	    my $tmp_email = format_email($name, $address, $email_usename);
665	    push_email_address($tmp_email, '');
666	    add_role($tmp_email, 'in file');
667	}
668    }
669
670    my @to = ();
671    if ($email || $email_list) {
672	if ($email) {
673	    @to = (@to, @email_to);
674	}
675	if ($email_list) {
676	    @to = (@to, @list_to);
677	}
678    }
679
680    if ($interactive) {
681	@to = interactive_get_maintainers(\@to);
682    }
683
684    return @to;
685}
686
687sub file_match_pattern {
688    my ($file, $pattern) = @_;
689    if (substr($pattern, -1) eq "/") {
690	if ($file =~ m@^$pattern@) {
691	    return 1;
692	}
693    } else {
694	if ($file =~ m@^$pattern@) {
695	    my $s1 = ($file =~ tr@/@@);
696	    my $s2 = ($pattern =~ tr@/@@);
697	    if ($s1 == $s2) {
698		return 1;
699	    }
700	}
701    }
702    return 0;
703}
704
705sub usage {
706    print <<EOT;
707usage: $P [options] patchfile
708       $P [options] -f file|directory
709version: $V
710
711MAINTAINER field selection options:
712  --email => print email address(es) if any
713    --git => include recent git \*-by: signers
714    --git-all-signature-types => include signers regardless of signature type
715        or use only ${signature_pattern} signers (default: $email_git_all_signature_types)
716    --git-fallback => use git when no exact MAINTAINERS pattern (default: $email_git_fallback)
717    --git-min-signatures => number of signatures required (default: $email_git_min_signatures)
718    --git-max-maintainers => maximum maintainers to add (default: $email_git_max_maintainers)
719    --git-min-percent => minimum percentage of commits required (default: $email_git_min_percent)
720    --git-blame => use git blame to find modified commits for patch or file
721    --git-since => git history to use (default: $email_git_since)
722    --hg-since => hg history to use (default: $email_hg_since)
723    --interactive => display a menu (mostly useful if used with the --git option)
724    --m => include maintainer(s) if any
725    --r => include reviewer(s) if any
726    --n => include name 'Full Name <addr\@domain.tld>'
727    --l => include list(s) if any
728    --s => include subscriber only list(s) if any
729    --remove-duplicates => minimize duplicate email names/addresses
730    --roles => show roles (status:subsystem, git-signer, list, etc...)
731    --rolestats => show roles and statistics (commits/total_commits, %)
732    --file-emails => add email addresses found in -f file (default: 0 (off))
733  --scm => print SCM tree(s) if any
734  --status => print status if any
735  --subsystem => print subsystem name if any
736  --web => print website(s) if any
737
738Output type options:
739  --separator [, ] => separator for multiple entries on 1 line
740    using --separator also sets --nomultiline if --separator is not [, ]
741  --multiline => print 1 entry per line
742
743Other options:
744  --pattern-depth => Number of pattern directory traversals (default: 0 (all))
745  --keywords => scan patch for keywords (default: $keywords)
746  --sections => print all of the subsystem sections with pattern matches
747  --mailmap => use .mailmap file (default: $email_use_mailmap)
748  --version => show version
749  --help => show this help information
750
751Default options:
752  [--email --nogit --git-fallback --m --r --n --l --multiline --pattern-depth=0
753   --remove-duplicates --rolestats]
754
755Notes:
756  Using "-f directory" may give unexpected results:
757      Used with "--git", git signators for _all_ files in and below
758          directory are examined as git recurses directories.
759          Any specified X: (exclude) pattern matches are _not_ ignored.
760      Used with "--nogit", directory is used as a pattern match,
761          no individual file within the directory or subdirectory
762          is matched.
763      Used with "--git-blame", does not iterate all files in directory
764  Using "--git-blame" is slow and may add old committers and authors
765      that are no longer active maintainers to the output.
766  Using "--roles" or "--rolestats" with git send-email --cc-cmd or any
767      other automated tools that expect only ["name"] <email address>
768      may not work because of additional output after <email address>.
769  Using "--rolestats" and "--git-blame" shows the #/total=% commits,
770      not the percentage of the entire file authored.  # of commits is
771      not a good measure of amount of code authored.  1 major commit may
772      contain a thousand lines, 5 trivial commits may modify a single line.
773  If git is not installed, but mercurial (hg) is installed and an .hg
774      repository exists, the following options apply to mercurial:
775          --git,
776          --git-min-signatures, --git-max-maintainers, --git-min-percent, and
777          --git-blame
778      Use --hg-since not --git-since to control date selection
779  File ".get_maintainer.conf", if it exists in the QEMU source root
780      directory, can change whatever get_maintainer defaults are desired.
781      Entries in this file can be any command line argument.
782      This file is prepended to any additional command line arguments.
783      Multiple lines and # comments are allowed.
784EOT
785}
786
787sub top_of_tree {
788    my ($lk_path) = @_;
789
790    if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
791	$lk_path .= "/";
792    }
793    if (    (-f "${lk_path}COPYING")
794        && (-f "${lk_path}MAINTAINERS")
795        && (-f "${lk_path}Makefile")
796        && (-d "${lk_path}docs")
797        && (-f "${lk_path}VERSION")
798        && (-f "${lk_path}vl.c")) {
799	return 1;
800    }
801    return 0;
802}
803
804sub parse_email {
805    my ($formatted_email) = @_;
806
807    my $name = "";
808    my $address = "";
809
810    if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) {
811	$name = $1;
812	$address = $2;
813    } elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) {
814	$address = $1;
815    } elsif ($formatted_email =~ /^(.+\@\S*).*$/) {
816	$address = $1;
817    }
818
819    $name =~ s/^\s+|\s+$//g;
820    $name =~ s/^\"|\"$//g;
821    $address =~ s/^\s+|\s+$//g;
822
823    if ($name =~ /[^\w \-]/i) {  	 ##has "must quote" chars
824	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
825	$name = "\"$name\"";
826    }
827
828    return ($name, $address);
829}
830
831sub format_email {
832    my ($name, $address, $usename) = @_;
833
834    my $formatted_email;
835
836    $name =~ s/^\s+|\s+$//g;
837    $name =~ s/^\"|\"$//g;
838    $address =~ s/^\s+|\s+$//g;
839
840    if ($name =~ /[^\w \-]/i) {          ##has "must quote" chars
841	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
842	$name = "\"$name\"";
843    }
844
845    if ($usename) {
846	if ("$name" eq "") {
847	    $formatted_email = "$address";
848	} else {
849	    $formatted_email = "$name <$address>";
850	}
851    } else {
852	$formatted_email = $address;
853    }
854
855    return $formatted_email;
856}
857
858sub find_first_section {
859    my $index = 0;
860
861    while ($index < @typevalue) {
862	my $tv = $typevalue[$index];
863	if (($tv =~ m/^(.):\s*(.*)/)) {
864	    last;
865	}
866	$index++;
867    }
868
869    return $index;
870}
871
872sub find_starting_index {
873    my ($index) = @_;
874
875    while ($index > 0) {
876	my $tv = $typevalue[$index];
877	if (!($tv =~ m/^(.):\s*(.*)/)) {
878	    last;
879	}
880	$index--;
881    }
882
883    return $index;
884}
885
886sub find_ending_index {
887    my ($index) = @_;
888
889    while ($index < @typevalue) {
890	my $tv = $typevalue[$index];
891	if (!($tv =~ m/^(.):\s*(.*)/)) {
892	    last;
893	}
894	$index++;
895    }
896
897    return $index;
898}
899
900sub get_subsystem_name {
901    my ($index) = @_;
902
903    my $start = find_starting_index($index);
904
905    my $subsystem = $typevalue[$start];
906    if (length($subsystem) > 20) {
907	$subsystem = substr($subsystem, 0, 17);
908	$subsystem =~ s/\s*$//;
909	$subsystem = $subsystem . "...";
910    }
911    return $subsystem;
912}
913
914sub get_maintainer_role {
915    my ($index) = @_;
916
917    my $i;
918    my $start = find_starting_index($index);
919    my $end = find_ending_index($index);
920
921    my $role = "unknown";
922    my $subsystem = get_subsystem_name($index);
923
924    for ($i = $start + 1; $i < $end; $i++) {
925	my $tv = $typevalue[$i];
926	if ($tv =~ m/^(.):\s*(.*)/) {
927	    my $ptype = $1;
928	    my $pvalue = $2;
929	    if ($ptype eq "S") {
930		$role = $pvalue;
931	    }
932	}
933    }
934
935    $role = lc($role);
936    if      ($role eq "supported") {
937	$role = "supporter";
938    } elsif ($role eq "maintained") {
939	$role = "maintainer";
940    } elsif ($role eq "odd fixes") {
941	$role = "odd fixer";
942    } elsif ($role eq "orphan") {
943	$role = "orphan minder";
944    } elsif ($role eq "obsolete") {
945	$role = "obsolete minder";
946    } elsif ($role eq "buried alive in reporters") {
947	$role = "chief penguin";
948    }
949
950    return $role . ":" . $subsystem;
951}
952
953sub get_list_role {
954    my ($index) = @_;
955
956    my $subsystem = get_subsystem_name($index);
957
958    if ($subsystem eq "THE REST") {
959	$subsystem = "";
960    }
961
962    return $subsystem;
963}
964
965sub add_categories {
966    my ($index) = @_;
967
968    my $i;
969    my $start = find_starting_index($index);
970    my $end = find_ending_index($index);
971
972    push(@subsystem, $typevalue[$start]);
973
974    for ($i = $start + 1; $i < $end; $i++) {
975	my $tv = $typevalue[$i];
976	if ($tv =~ m/^(.):\s*(.*)/) {
977	    my $ptype = $1;
978	    my $pvalue = $2;
979	    if ($ptype eq "L") {
980		my $list_address = $pvalue;
981		my $list_additional = "";
982		my $list_role = get_list_role($i);
983
984		if ($list_role ne "") {
985		    $list_role = ":" . $list_role;
986		}
987		if ($list_address =~ m/([^\s]+)\s+(.*)$/) {
988		    $list_address = $1;
989		    $list_additional = $2;
990		}
991		if ($list_additional =~ m/subscribers-only/) {
992		    if ($email_subscriber_list) {
993			if (!$hash_list_to{lc($list_address)}) {
994			    $hash_list_to{lc($list_address)} = 1;
995			    push(@list_to, [$list_address,
996					    "subscriber list${list_role}"]);
997			}
998		    }
999		} else {
1000		    if ($email_list) {
1001			if (!$hash_list_to{lc($list_address)}) {
1002			    $hash_list_to{lc($list_address)} = 1;
1003			    if ($list_additional =~ m/moderated/) {
1004				push(@list_to, [$list_address,
1005						"moderated list${list_role}"]);
1006			    } else {
1007				push(@list_to, [$list_address,
1008						"open list${list_role}"]);
1009			    }
1010			}
1011		    }
1012		}
1013	    } elsif ($ptype eq "M") {
1014		my ($name, $address) = parse_email($pvalue);
1015		if ($name eq "") {
1016		    if ($i > 0) {
1017			my $tv = $typevalue[$i - 1];
1018			if ($tv =~ m/^(.):\s*(.*)/) {
1019			    if ($1 eq "P") {
1020				$name = $2;
1021				$pvalue = format_email($name, $address, $email_usename);
1022			    }
1023			}
1024		    }
1025		}
1026		if ($email_maintainer) {
1027		    my $role = get_maintainer_role($i);
1028		    push_email_addresses($pvalue, $role);
1029		}
1030	    } elsif ($ptype eq "R") {
1031		my ($name, $address) = parse_email($pvalue);
1032		if ($name eq "") {
1033		    if ($i > 0) {
1034			my $tv = $typevalue[$i - 1];
1035			if ($tv =~ m/^(.):\s*(.*)/) {
1036			    if ($1 eq "P") {
1037				$name = $2;
1038				$pvalue = format_email($name, $address, $email_usename);
1039			    }
1040			}
1041		    }
1042		}
1043		if ($email_reviewer) {
1044		    my $subsystem = get_subsystem_name($i);
1045		    push_email_addresses($pvalue, "reviewer:$subsystem");
1046		}
1047	    } elsif ($ptype eq "T") {
1048		push(@scm, $pvalue);
1049	    } elsif ($ptype eq "W") {
1050		push(@web, $pvalue);
1051	    } elsif ($ptype eq "S") {
1052		push(@status, $pvalue);
1053	    }
1054	}
1055    }
1056}
1057
1058sub email_inuse {
1059    my ($name, $address) = @_;
1060
1061    return 1 if (($name eq "") && ($address eq ""));
1062    return 1 if (($name ne "") && exists($email_hash_name{lc($name)}));
1063    return 1 if (($address ne "") && exists($email_hash_address{lc($address)}));
1064
1065    return 0;
1066}
1067
1068sub push_email_address {
1069    my ($line, $role) = @_;
1070
1071    my ($name, $address) = parse_email($line);
1072
1073    if ($address eq "") {
1074	return 0;
1075    }
1076
1077    if (!$email_remove_duplicates) {
1078	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1079    } elsif (!email_inuse($name, $address)) {
1080	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1081	$email_hash_name{lc($name)}++ if ($name ne "");
1082	$email_hash_address{lc($address)}++;
1083    }
1084
1085    return 1;
1086}
1087
1088sub push_email_addresses {
1089    my ($address, $role) = @_;
1090
1091    my @address_list = ();
1092
1093    if (rfc822_valid($address)) {
1094	push_email_address($address, $role);
1095    } elsif (@address_list = rfc822_validlist($address)) {
1096	my $array_count = shift(@address_list);
1097	while (my $entry = shift(@address_list)) {
1098	    push_email_address($entry, $role);
1099	}
1100    } else {
1101	if (!push_email_address($address, $role)) {
1102	    warn("Invalid MAINTAINERS address: '" . $address . "'\n");
1103	}
1104    }
1105}
1106
1107sub add_role {
1108    my ($line, $role) = @_;
1109
1110    my ($name, $address) = parse_email($line);
1111    my $email = format_email($name, $address, $email_usename);
1112
1113    foreach my $entry (@email_to) {
1114	if ($email_remove_duplicates) {
1115	    my ($entry_name, $entry_address) = parse_email($entry->[0]);
1116	    if (($name eq $entry_name || $address eq $entry_address)
1117		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1118	    ) {
1119		if ($entry->[1] eq "") {
1120		    $entry->[1] = "$role";
1121		} else {
1122		    $entry->[1] = "$entry->[1],$role";
1123		}
1124	    }
1125	} else {
1126	    if ($email eq $entry->[0]
1127		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1128	    ) {
1129		if ($entry->[1] eq "") {
1130		    $entry->[1] = "$role";
1131		} else {
1132		    $entry->[1] = "$entry->[1],$role";
1133		}
1134	    }
1135	}
1136    }
1137}
1138
1139sub which {
1140    my ($bin) = @_;
1141
1142    foreach my $path (split(/:/, $ENV{PATH})) {
1143	if (-e "$path/$bin") {
1144	    return "$path/$bin";
1145	}
1146    }
1147
1148    return "";
1149}
1150
1151sub which_conf {
1152    my ($conf) = @_;
1153
1154    foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
1155	if (-e "$path/$conf") {
1156	    return "$path/$conf";
1157	}
1158    }
1159
1160    return "";
1161}
1162
1163sub mailmap_email {
1164    my ($line) = @_;
1165
1166    my ($name, $address) = parse_email($line);
1167    my $email = format_email($name, $address, 1);
1168    my $real_name = $name;
1169    my $real_address = $address;
1170
1171    if (exists $mailmap->{names}->{$email} ||
1172	exists $mailmap->{addresses}->{$email}) {
1173	if (exists $mailmap->{names}->{$email}) {
1174	    $real_name = $mailmap->{names}->{$email};
1175	}
1176	if (exists $mailmap->{addresses}->{$email}) {
1177	    $real_address = $mailmap->{addresses}->{$email};
1178	}
1179    } else {
1180	if (exists $mailmap->{names}->{$address}) {
1181	    $real_name = $mailmap->{names}->{$address};
1182	}
1183	if (exists $mailmap->{addresses}->{$address}) {
1184	    $real_address = $mailmap->{addresses}->{$address};
1185	}
1186    }
1187    return format_email($real_name, $real_address, 1);
1188}
1189
1190sub mailmap {
1191    my (@addresses) = @_;
1192
1193    my @mapped_emails = ();
1194    foreach my $line (@addresses) {
1195	push(@mapped_emails, mailmap_email($line));
1196    }
1197    merge_by_realname(@mapped_emails) if ($email_use_mailmap);
1198    return @mapped_emails;
1199}
1200
1201sub merge_by_realname {
1202    my %address_map;
1203    my (@emails) = @_;
1204
1205    foreach my $email (@emails) {
1206	my ($name, $address) = parse_email($email);
1207	if (exists $address_map{$name}) {
1208	    $address = $address_map{$name};
1209	    $email = format_email($name, $address, 1);
1210	} else {
1211	    $address_map{$name} = $address;
1212	}
1213    }
1214}
1215
1216sub git_execute_cmd {
1217    my ($cmd) = @_;
1218    my @lines = ();
1219
1220    my $output = `$cmd`;
1221    $output =~ s/^\s*//gm;
1222    @lines = split("\n", $output);
1223
1224    return @lines;
1225}
1226
1227sub hg_execute_cmd {
1228    my ($cmd) = @_;
1229    my @lines = ();
1230
1231    my $output = `$cmd`;
1232    @lines = split("\n", $output);
1233
1234    return @lines;
1235}
1236
1237sub extract_formatted_signatures {
1238    my (@signature_lines) = @_;
1239
1240    my @type = @signature_lines;
1241
1242    s/\s*(.*):.*/$1/ for (@type);
1243
1244    # cut -f2- -d":"
1245    s/\s*.*:\s*(.+)\s*/$1/ for (@signature_lines);
1246
1247## Reformat email addresses (with names) to avoid badly written signatures
1248
1249    foreach my $signer (@signature_lines) {
1250	$signer = deduplicate_email($signer);
1251    }
1252
1253    return (\@type, \@signature_lines);
1254}
1255
1256sub vcs_find_signers {
1257    my ($cmd) = @_;
1258    my $commits;
1259    my @lines = ();
1260    my @signatures = ();
1261
1262    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1263
1264    my $pattern = $VCS_cmds{"commit_pattern"};
1265
1266    $commits = grep(/$pattern/, @lines);	# of commits
1267
1268    @signatures = grep(/^[ \t]*${signature_pattern}.*\@.*$/, @lines);
1269
1270    return (0, @signatures) if !@signatures;
1271
1272    save_commits_by_author(@lines) if ($interactive);
1273    save_commits_by_signer(@lines) if ($interactive);
1274
1275    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
1276
1277    return ($commits, @$signers_ref);
1278}
1279
1280sub vcs_find_author {
1281    my ($cmd) = @_;
1282    my @lines = ();
1283
1284    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1285
1286    return @lines if !@lines;
1287
1288    my @authors = ();
1289    foreach my $line (@lines) {
1290	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1291	    my $author = $1;
1292	    my ($name, $address) = parse_email($author);
1293	    $author = format_email($name, $address, 1);
1294	    push(@authors, $author);
1295	}
1296    }
1297
1298    save_commits_by_author(@lines) if ($interactive);
1299    save_commits_by_signer(@lines) if ($interactive);
1300
1301    return @authors;
1302}
1303
1304sub vcs_save_commits {
1305    my ($cmd) = @_;
1306    my @lines = ();
1307    my @commits = ();
1308
1309    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1310
1311    foreach my $line (@lines) {
1312	if ($line =~ m/$VCS_cmds{"blame_commit_pattern"}/) {
1313	    push(@commits, $1);
1314	}
1315    }
1316
1317    return @commits;
1318}
1319
1320sub vcs_blame {
1321    my ($file) = @_;
1322    my $cmd;
1323    my @commits = ();
1324
1325    return @commits if (!(-f $file));
1326
1327    if (@range && $VCS_cmds{"blame_range_cmd"} eq "") {
1328	my @all_commits = ();
1329
1330	$cmd = $VCS_cmds{"blame_file_cmd"};
1331	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1332	@all_commits = vcs_save_commits($cmd);
1333
1334	foreach my $file_range_diff (@range) {
1335	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1336	    my $diff_file = $1;
1337	    my $diff_start = $2;
1338	    my $diff_length = $3;
1339	    next if ("$file" ne "$diff_file");
1340	    for (my $i = $diff_start; $i < $diff_start + $diff_length; $i++) {
1341		push(@commits, $all_commits[$i]);
1342	    }
1343	}
1344    } elsif (@range) {
1345	foreach my $file_range_diff (@range) {
1346	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1347	    my $diff_file = $1;
1348	    my $diff_start = $2;
1349	    my $diff_length = $3;
1350	    next if ("$file" ne "$diff_file");
1351	    $cmd = $VCS_cmds{"blame_range_cmd"};
1352	    $cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1353	    push(@commits, vcs_save_commits($cmd));
1354	}
1355    } else {
1356	$cmd = $VCS_cmds{"blame_file_cmd"};
1357	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1358	@commits = vcs_save_commits($cmd);
1359    }
1360
1361    foreach my $commit (@commits) {
1362	$commit =~ s/^\^//g;
1363    }
1364
1365    return @commits;
1366}
1367
1368my $printed_novcs = 0;
1369sub vcs_exists {
1370    %VCS_cmds = %VCS_cmds_git;
1371    return 1 if eval $VCS_cmds{"available"};
1372    %VCS_cmds = %VCS_cmds_hg;
1373    return 2 if eval $VCS_cmds{"available"};
1374    %VCS_cmds = ();
1375    if (!$printed_novcs) {
1376	warn("$P: No supported VCS found.  Add --nogit to options?\n");
1377	warn("Using a git repository produces better results.\n");
1378	warn("Try latest git repository using:\n");
1379	warn("git clone https://git.qemu.org/git/qemu.git\n");
1380	$printed_novcs = 1;
1381    }
1382    return 0;
1383}
1384
1385sub vcs_is_git {
1386    vcs_exists();
1387    return $vcs_used == 1;
1388}
1389
1390sub vcs_is_hg {
1391    return $vcs_used == 2;
1392}
1393
1394sub interactive_get_maintainers {
1395    my ($list_ref) = @_;
1396    my @list = @$list_ref;
1397
1398    vcs_exists();
1399
1400    my %selected;
1401    my %authored;
1402    my %signed;
1403    my $count = 0;
1404    my $maintained = 0;
1405    foreach my $entry (@list) {
1406	$maintained = 1 if ($entry->[1] =~ /^(maintainer|supporter)/i);
1407	$selected{$count} = 1;
1408	$authored{$count} = 0;
1409	$signed{$count} = 0;
1410	$count++;
1411    }
1412
1413    #menu loop
1414    my $done = 0;
1415    my $print_options = 0;
1416    my $redraw = 1;
1417    while (!$done) {
1418	$count = 0;
1419	if ($redraw) {
1420	    printf STDERR "\n%1s %2s %-65s",
1421			  "*", "#", "email/list and role:stats";
1422	    if ($email_git ||
1423		($email_git_fallback && !$maintained) ||
1424		$email_git_blame) {
1425		print STDERR "auth sign";
1426	    }
1427	    print STDERR "\n";
1428	    foreach my $entry (@list) {
1429		my $email = $entry->[0];
1430		my $role = $entry->[1];
1431		my $sel = "";
1432		$sel = "*" if ($selected{$count});
1433		my $commit_author = $commit_author_hash{$email};
1434		my $commit_signer = $commit_signer_hash{$email};
1435		my $authored = 0;
1436		my $signed = 0;
1437		$authored++ for (@{$commit_author});
1438		$signed++ for (@{$commit_signer});
1439		printf STDERR "%1s %2d %-65s", $sel, $count + 1, $email;
1440		printf STDERR "%4d %4d", $authored, $signed
1441		    if ($authored > 0 || $signed > 0);
1442		printf STDERR "\n     %s\n", $role;
1443		if ($authored{$count}) {
1444		    my $commit_author = $commit_author_hash{$email};
1445		    foreach my $ref (@{$commit_author}) {
1446			print STDERR "     Author: @{$ref}[1]\n";
1447		    }
1448		}
1449		if ($signed{$count}) {
1450		    my $commit_signer = $commit_signer_hash{$email};
1451		    foreach my $ref (@{$commit_signer}) {
1452			print STDERR "     @{$ref}[2]: @{$ref}[1]\n";
1453		    }
1454		}
1455
1456		$count++;
1457	    }
1458	}
1459	my $date_ref = \$email_git_since;
1460	$date_ref = \$email_hg_since if (vcs_is_hg());
1461	if ($print_options) {
1462	    $print_options = 0;
1463	    if (vcs_exists()) {
1464		print STDERR <<EOT
1465
1466Version Control options:
1467g  use git history      [$email_git]
1468gf use git-fallback     [$email_git_fallback]
1469b  use git blame        [$email_git_blame]
1470bs use blame signatures [$email_git_blame_signatures]
1471c# minimum commits      [$email_git_min_signatures]
1472%# min percent          [$email_git_min_percent]
1473d# history to use       [$$date_ref]
1474x# max maintainers      [$email_git_max_maintainers]
1475t  all signature types  [$email_git_all_signature_types]
1476m  use .mailmap         [$email_use_mailmap]
1477EOT
1478	    }
1479	    print STDERR <<EOT
1480
1481Additional options:
14820  toggle all
1483tm toggle maintainers
1484tg toggle git entries
1485tl toggle open list entries
1486ts toggle subscriber list entries
1487f  emails in file       [$file_emails]
1488k  keywords in file     [$keywords]
1489r  remove duplicates    [$email_remove_duplicates]
1490p# pattern match depth  [$pattern_depth]
1491EOT
1492	}
1493	print STDERR
1494"\n#(toggle), A#(author), S#(signed) *(all), ^(none), O(options), Y(approve): ";
1495
1496	my $input = <STDIN>;
1497	chomp($input);
1498
1499	$redraw = 1;
1500	my $rerun = 0;
1501	my @wish = split(/[, ]+/, $input);
1502	foreach my $nr (@wish) {
1503	    $nr = lc($nr);
1504	    my $sel = substr($nr, 0, 1);
1505	    my $str = substr($nr, 1);
1506	    my $val = 0;
1507	    $val = $1 if $str =~ /^(\d+)$/;
1508
1509	    if ($sel eq "y") {
1510		$interactive = 0;
1511		$done = 1;
1512		$output_rolestats = 0;
1513		$output_roles = 0;
1514		last;
1515	    } elsif ($nr =~ /^\d+$/ && $nr > 0 && $nr <= $count) {
1516		$selected{$nr - 1} = !$selected{$nr - 1};
1517	    } elsif ($sel eq "*" || $sel eq '^') {
1518		my $toggle = 0;
1519		$toggle = 1 if ($sel eq '*');
1520		for (my $i = 0; $i < $count; $i++) {
1521		    $selected{$i} = $toggle;
1522		}
1523	    } elsif ($sel eq "0") {
1524		for (my $i = 0; $i < $count; $i++) {
1525		    $selected{$i} = !$selected{$i};
1526		}
1527	    } elsif ($sel eq "t") {
1528		if (lc($str) eq "m") {
1529		    for (my $i = 0; $i < $count; $i++) {
1530			$selected{$i} = !$selected{$i}
1531			    if ($list[$i]->[1] =~ /^(maintainer|supporter)/i);
1532		    }
1533		} elsif (lc($str) eq "g") {
1534		    for (my $i = 0; $i < $count; $i++) {
1535			$selected{$i} = !$selected{$i}
1536			    if ($list[$i]->[1] =~ /^(author|commit|signer)/i);
1537		    }
1538		} elsif (lc($str) eq "l") {
1539		    for (my $i = 0; $i < $count; $i++) {
1540			$selected{$i} = !$selected{$i}
1541			    if ($list[$i]->[1] =~ /^(open list)/i);
1542		    }
1543		} elsif (lc($str) eq "s") {
1544		    for (my $i = 0; $i < $count; $i++) {
1545			$selected{$i} = !$selected{$i}
1546			    if ($list[$i]->[1] =~ /^(subscriber list)/i);
1547		    }
1548		}
1549	    } elsif ($sel eq "a") {
1550		if ($val > 0 && $val <= $count) {
1551		    $authored{$val - 1} = !$authored{$val - 1};
1552		} elsif ($str eq '*' || $str eq '^') {
1553		    my $toggle = 0;
1554		    $toggle = 1 if ($str eq '*');
1555		    for (my $i = 0; $i < $count; $i++) {
1556			$authored{$i} = $toggle;
1557		    }
1558		}
1559	    } elsif ($sel eq "s") {
1560		if ($val > 0 && $val <= $count) {
1561		    $signed{$val - 1} = !$signed{$val - 1};
1562		} elsif ($str eq '*' || $str eq '^') {
1563		    my $toggle = 0;
1564		    $toggle = 1 if ($str eq '*');
1565		    for (my $i = 0; $i < $count; $i++) {
1566			$signed{$i} = $toggle;
1567		    }
1568		}
1569	    } elsif ($sel eq "o") {
1570		$print_options = 1;
1571		$redraw = 1;
1572	    } elsif ($sel eq "g") {
1573		if ($str eq "f") {
1574		    bool_invert(\$email_git_fallback);
1575		} else {
1576		    bool_invert(\$email_git);
1577		}
1578		$rerun = 1;
1579	    } elsif ($sel eq "b") {
1580		if ($str eq "s") {
1581		    bool_invert(\$email_git_blame_signatures);
1582		} else {
1583		    bool_invert(\$email_git_blame);
1584		}
1585		$rerun = 1;
1586	    } elsif ($sel eq "c") {
1587		if ($val > 0) {
1588		    $email_git_min_signatures = $val;
1589		    $rerun = 1;
1590		}
1591	    } elsif ($sel eq "x") {
1592		if ($val > 0) {
1593		    $email_git_max_maintainers = $val;
1594		    $rerun = 1;
1595		}
1596	    } elsif ($sel eq "%") {
1597		if ($str ne "" && $val >= 0) {
1598		    $email_git_min_percent = $val;
1599		    $rerun = 1;
1600		}
1601	    } elsif ($sel eq "d") {
1602		if (vcs_is_git()) {
1603		    $email_git_since = $str;
1604		} elsif (vcs_is_hg()) {
1605		    $email_hg_since = $str;
1606		}
1607		$rerun = 1;
1608	    } elsif ($sel eq "t") {
1609		bool_invert(\$email_git_all_signature_types);
1610		$rerun = 1;
1611	    } elsif ($sel eq "f") {
1612		bool_invert(\$file_emails);
1613		$rerun = 1;
1614	    } elsif ($sel eq "r") {
1615		bool_invert(\$email_remove_duplicates);
1616		$rerun = 1;
1617	    } elsif ($sel eq "m") {
1618		bool_invert(\$email_use_mailmap);
1619		read_mailmap();
1620		$rerun = 1;
1621	    } elsif ($sel eq "k") {
1622		bool_invert(\$keywords);
1623		$rerun = 1;
1624	    } elsif ($sel eq "p") {
1625		if ($str ne "" && $val >= 0) {
1626		    $pattern_depth = $val;
1627		    $rerun = 1;
1628		}
1629	    } elsif ($sel eq "h" || $sel eq "?") {
1630		print STDERR <<EOT
1631
1632Interactive mode allows you to select the various maintainers, submitters,
1633commit signers and mailing lists that could be CC'd on a patch.
1634
1635Any *'d entry is selected.
1636
1637If you have git or hg installed, you can choose to summarize the commit
1638history of files in the patch.  Also, each line of the current file can
1639be matched to its commit author and that commits signers with blame.
1640
1641Various knobs exist to control the length of time for active commit
1642tracking, the maximum number of commit authors and signers to add,
1643and such.
1644
1645Enter selections at the prompt until you are satisfied that the selected
1646maintainers are appropriate.  You may enter multiple selections separated
1647by either commas or spaces.
1648
1649EOT
1650	    } else {
1651		print STDERR "invalid option: '$nr'\n";
1652		$redraw = 0;
1653	    }
1654	}
1655	if ($rerun) {
1656	    print STDERR "git-blame can be very slow, please have patience..."
1657		if ($email_git_blame);
1658	    goto &get_maintainers;
1659	}
1660    }
1661
1662    #drop not selected entries
1663    $count = 0;
1664    my @new_emailto = ();
1665    foreach my $entry (@list) {
1666	if ($selected{$count}) {
1667	    push(@new_emailto, $list[$count]);
1668	}
1669	$count++;
1670    }
1671    return @new_emailto;
1672}
1673
1674sub bool_invert {
1675    my ($bool_ref) = @_;
1676
1677    if ($$bool_ref) {
1678	$$bool_ref = 0;
1679    } else {
1680	$$bool_ref = 1;
1681    }
1682}
1683
1684sub deduplicate_email {
1685    my ($email) = @_;
1686
1687    my $matched = 0;
1688    my ($name, $address) = parse_email($email);
1689    $email = format_email($name, $address, 1);
1690    $email = mailmap_email($email);
1691
1692    return $email if (!$email_remove_duplicates);
1693
1694    ($name, $address) = parse_email($email);
1695
1696    if ($name ne "" && $deduplicate_name_hash{lc($name)}) {
1697	$name = $deduplicate_name_hash{lc($name)}->[0];
1698	$address = $deduplicate_name_hash{lc($name)}->[1];
1699	$matched = 1;
1700    } elsif ($deduplicate_address_hash{lc($address)}) {
1701	$name = $deduplicate_address_hash{lc($address)}->[0];
1702	$address = $deduplicate_address_hash{lc($address)}->[1];
1703	$matched = 1;
1704    }
1705    if (!$matched) {
1706	$deduplicate_name_hash{lc($name)} = [ $name, $address ];
1707	$deduplicate_address_hash{lc($address)} = [ $name, $address ];
1708    }
1709    $email = format_email($name, $address, 1);
1710    $email = mailmap_email($email);
1711    return $email;
1712}
1713
1714sub save_commits_by_author {
1715    my (@lines) = @_;
1716
1717    my @authors = ();
1718    my @commits = ();
1719    my @subjects = ();
1720
1721    foreach my $line (@lines) {
1722	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1723	    my $author = $1;
1724	    $author = deduplicate_email($author);
1725	    push(@authors, $author);
1726	}
1727	push(@commits, $1) if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
1728	push(@subjects, $1) if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
1729    }
1730
1731    for (my $i = 0; $i < @authors; $i++) {
1732	my $exists = 0;
1733	foreach my $ref(@{$commit_author_hash{$authors[$i]}}) {
1734	    if (@{$ref}[0] eq $commits[$i] &&
1735		@{$ref}[1] eq $subjects[$i]) {
1736		$exists = 1;
1737		last;
1738	    }
1739	}
1740	if (!$exists) {
1741	    push(@{$commit_author_hash{$authors[$i]}},
1742		 [ ($commits[$i], $subjects[$i]) ]);
1743	}
1744    }
1745}
1746
1747sub save_commits_by_signer {
1748    my (@lines) = @_;
1749
1750    my $commit = "";
1751    my $subject = "";
1752
1753    foreach my $line (@lines) {
1754	$commit = $1 if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
1755	$subject = $1 if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
1756	if ($line =~ /^[ \t]*${signature_pattern}.*\@.*$/) {
1757	    my @signatures = ($line);
1758	    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
1759	    my @types = @$types_ref;
1760	    my @signers = @$signers_ref;
1761
1762	    my $type = $types[0];
1763	    my $signer = $signers[0];
1764
1765	    $signer = deduplicate_email($signer);
1766
1767	    my $exists = 0;
1768	    foreach my $ref(@{$commit_signer_hash{$signer}}) {
1769		if (@{$ref}[0] eq $commit &&
1770		    @{$ref}[1] eq $subject &&
1771		    @{$ref}[2] eq $type) {
1772		    $exists = 1;
1773		    last;
1774		}
1775	    }
1776	    if (!$exists) {
1777		push(@{$commit_signer_hash{$signer}},
1778		     [ ($commit, $subject, $type) ]);
1779	    }
1780	}
1781    }
1782}
1783
1784sub vcs_assign {
1785    my ($role, $divisor, @lines) = @_;
1786
1787    my %hash;
1788    my $count = 0;
1789
1790    return if (@lines <= 0);
1791
1792    if ($divisor <= 0) {
1793	warn("Bad divisor in " . (caller(0))[3] . ": $divisor\n");
1794	$divisor = 1;
1795    }
1796
1797    @lines = mailmap(@lines);
1798
1799    return if (@lines <= 0);
1800
1801    @lines = sort(@lines);
1802
1803    # uniq -c
1804    $hash{$_}++ for @lines;
1805
1806    # sort -rn
1807    foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
1808	my $sign_offs = $hash{$line};
1809	my $percent = $sign_offs * 100 / $divisor;
1810
1811	$percent = 100 if ($percent > 100);
1812	$count++;
1813	last if ($sign_offs < $email_git_min_signatures ||
1814		 $count > $email_git_max_maintainers ||
1815		 $percent < $email_git_min_percent);
1816	push_email_address($line, '');
1817	if ($output_rolestats) {
1818	    my $fmt_percent = sprintf("%.0f", $percent);
1819	    add_role($line, "$role:$sign_offs/$divisor=$fmt_percent%");
1820	} else {
1821	    add_role($line, $role);
1822	}
1823    }
1824}
1825
1826sub vcs_file_signoffs {
1827    my ($file) = @_;
1828
1829    my @signers = ();
1830    my $commits;
1831
1832    $vcs_used = vcs_exists();
1833    return if (!$vcs_used);
1834
1835    my $cmd = $VCS_cmds{"find_signers_cmd"};
1836    $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
1837
1838    ($commits, @signers) = vcs_find_signers($cmd);
1839
1840    foreach my $signer (@signers) {
1841	$signer = deduplicate_email($signer);
1842    }
1843
1844    vcs_assign("commit_signer", $commits, @signers);
1845}
1846
1847sub vcs_file_blame {
1848    my ($file) = @_;
1849
1850    my @signers = ();
1851    my @all_commits = ();
1852    my @commits = ();
1853    my $total_commits;
1854    my $total_lines;
1855
1856    $vcs_used = vcs_exists();
1857    return if (!$vcs_used);
1858
1859    @all_commits = vcs_blame($file);
1860    @commits = uniq(@all_commits);
1861    $total_commits = @commits;
1862    $total_lines = @all_commits;
1863
1864    if ($email_git_blame_signatures) {
1865	if (vcs_is_hg()) {
1866	    my $commit_count;
1867	    my @commit_signers = ();
1868	    my $commit = join(" -r ", @commits);
1869	    my $cmd;
1870
1871	    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
1872	    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1873
1874	    ($commit_count, @commit_signers) = vcs_find_signers($cmd);
1875
1876	    push(@signers, @commit_signers);
1877	} else {
1878	    foreach my $commit (@commits) {
1879		my $commit_count;
1880		my @commit_signers = ();
1881		my $cmd;
1882
1883		$cmd = $VCS_cmds{"find_commit_signers_cmd"};
1884		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1885
1886		($commit_count, @commit_signers) = vcs_find_signers($cmd);
1887
1888		push(@signers, @commit_signers);
1889	    }
1890	}
1891    }
1892
1893    if ($from_filename) {
1894	if ($output_rolestats) {
1895	    my @blame_signers;
1896	    if (vcs_is_hg()) {{		# Double brace for last exit
1897		my $commit_count;
1898		my @commit_signers = ();
1899		@commits = uniq(@commits);
1900		@commits = sort(@commits);
1901		my $commit = join(" -r ", @commits);
1902		my $cmd;
1903
1904		$cmd = $VCS_cmds{"find_commit_author_cmd"};
1905		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1906
1907		my @lines = ();
1908
1909		@lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1910
1911		last if !@lines;
1912
1913		my @authors = ();
1914		foreach my $line (@lines) {
1915		    if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1916			my $author = $1;
1917			$author = deduplicate_email($author);
1918			push(@authors, $author);
1919		    }
1920		}
1921
1922		save_commits_by_author(@lines) if ($interactive);
1923		save_commits_by_signer(@lines) if ($interactive);
1924
1925		push(@signers, @authors);
1926	    }}
1927	    else {
1928		foreach my $commit (@commits) {
1929		    my $i;
1930		    my $cmd = $VCS_cmds{"find_commit_author_cmd"};
1931		    $cmd =~ s/(\$\w+)/$1/eeg;	#interpolate $cmd
1932		    my @author = vcs_find_author($cmd);
1933		    next if !@author;
1934
1935		    my $formatted_author = deduplicate_email($author[0]);
1936
1937		    my $count = grep(/$commit/, @all_commits);
1938		    for ($i = 0; $i < $count ; $i++) {
1939			push(@blame_signers, $formatted_author);
1940		    }
1941		}
1942	    }
1943	    if (@blame_signers) {
1944		vcs_assign("authored lines", $total_lines, @blame_signers);
1945	    }
1946	}
1947	foreach my $signer (@signers) {
1948	    $signer = deduplicate_email($signer);
1949	}
1950	vcs_assign("commits", $total_commits, @signers);
1951    } else {
1952	foreach my $signer (@signers) {
1953	    $signer = deduplicate_email($signer);
1954	}
1955	vcs_assign("modified commits", $total_commits, @signers);
1956    }
1957}
1958
1959sub uniq {
1960    my (@parms) = @_;
1961
1962    my %saw;
1963    @parms = grep(!$saw{$_}++, @parms);
1964    return @parms;
1965}
1966
1967sub sort_and_uniq {
1968    my (@parms) = @_;
1969
1970    my %saw;
1971    @parms = sort @parms;
1972    @parms = grep(!$saw{$_}++, @parms);
1973    return @parms;
1974}
1975
1976sub clean_file_emails {
1977    my (@file_emails) = @_;
1978    my @fmt_emails = ();
1979
1980    foreach my $email (@file_emails) {
1981	$email =~ s/[\(\<\{]{0,1}([A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+)[\)\>\}]{0,1}/\<$1\>/g;
1982	my ($name, $address) = parse_email($email);
1983	if ($name eq '"[,\.]"') {
1984	    $name = "";
1985	}
1986
1987	my @nw = split(/[^A-Za-zÀ-ÿ\'\,\.\+-]/, $name);
1988	if (@nw > 2) {
1989	    my $first = $nw[@nw - 3];
1990	    my $middle = $nw[@nw - 2];
1991	    my $last = $nw[@nw - 1];
1992
1993	    if (((length($first) == 1 && $first =~ m/[A-Za-z]/) ||
1994		 (length($first) == 2 && substr($first, -1) eq ".")) ||
1995		(length($middle) == 1 ||
1996		 (length($middle) == 2 && substr($middle, -1) eq "."))) {
1997		$name = "$first $middle $last";
1998	    } else {
1999		$name = "$middle $last";
2000	    }
2001	}
2002
2003	if (substr($name, -1) =~ /[,\.]/) {
2004	    $name = substr($name, 0, length($name) - 1);
2005	} elsif (substr($name, -2) =~ /[,\.]"/) {
2006	    $name = substr($name, 0, length($name) - 2) . '"';
2007	}
2008
2009	if (substr($name, 0, 1) =~ /[,\.]/) {
2010	    $name = substr($name, 1, length($name) - 1);
2011	} elsif (substr($name, 0, 2) =~ /"[,\.]/) {
2012	    $name = '"' . substr($name, 2, length($name) - 2);
2013	}
2014
2015	my $fmt_email = format_email($name, $address, $email_usename);
2016	push(@fmt_emails, $fmt_email);
2017    }
2018    return @fmt_emails;
2019}
2020
2021sub merge_email {
2022    my @lines;
2023    my %saw;
2024
2025    for (@_) {
2026	my ($address, $role) = @$_;
2027	if (!$saw{$address}) {
2028	    if ($output_roles) {
2029		push(@lines, "$address ($role)");
2030	    } else {
2031		push(@lines, $address);
2032	    }
2033	    $saw{$address} = 1;
2034	}
2035    }
2036
2037    return @lines;
2038}
2039
2040sub output {
2041    my (@parms) = @_;
2042
2043    if ($output_multiline) {
2044	foreach my $line (@parms) {
2045	    print("${line}\n");
2046	}
2047    } else {
2048	print(join($output_separator, @parms));
2049	print("\n");
2050    }
2051}
2052
2053my $rfc822re;
2054
2055sub make_rfc822re {
2056#   Basic lexical tokens are specials, domain_literal, quoted_string, atom, and
2057#   comment.  We must allow for rfc822_lwsp (or comments) after each of these.
2058#   This regexp will only work on addresses which have had comments stripped
2059#   and replaced with rfc822_lwsp.
2060
2061    my $specials = '()<>@,;:\\\\".\\[\\]';
2062    my $controls = '\\000-\\037\\177';
2063
2064    my $dtext = "[^\\[\\]\\r\\\\]";
2065    my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*";
2066
2067    my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*";
2068
2069#   Use zero-width assertion to spot the limit of an atom.  A simple
2070#   $rfc822_lwsp* causes the regexp engine to hang occasionally.
2071    my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))";
2072    my $word = "(?:$atom|$quoted_string)";
2073    my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*";
2074
2075    my $sub_domain = "(?:$atom|$domain_literal)";
2076    my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*";
2077
2078    my $addr_spec = "$localpart\@$rfc822_lwsp*$domain";
2079
2080    my $phrase = "$word*";
2081    my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)";
2082    my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*";
2083    my $mailbox = "(?:$addr_spec|$phrase$route_addr)";
2084
2085    my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*";
2086    my $address = "(?:$mailbox|$group)";
2087
2088    return "$rfc822_lwsp*$address";
2089}
2090
2091sub rfc822_strip_comments {
2092    my $s = shift;
2093#   Recursively remove comments, and replace with a single space.  The simpler
2094#   regexps in the Email Addressing FAQ are imperfect - they will miss escaped
2095#   chars in atoms, for example.
2096
2097    while ($s =~ s/^((?:[^"\\]|\\.)*
2098                    (?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*)
2099                    \((?:[^()\\]|\\.)*\)/$1 /osx) {}
2100    return $s;
2101}
2102
2103#   valid: returns true if the parameter is an RFC822 valid address
2104#
2105sub rfc822_valid {
2106    my $s = rfc822_strip_comments(shift);
2107
2108    if (!$rfc822re) {
2109        $rfc822re = make_rfc822re();
2110    }
2111
2112    return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/;
2113}
2114
2115#   validlist: In scalar context, returns true if the parameter is an RFC822
2116#              valid list of addresses.
2117#
2118#              In list context, returns an empty list on failure (an invalid
2119#              address was found); otherwise a list whose first element is the
2120#              number of addresses found and whose remaining elements are the
2121#              addresses.  This is needed to disambiguate failure (invalid)
2122#              from success with no addresses found, because an empty string is
2123#              a valid list.
2124
2125sub rfc822_validlist {
2126    my $s = rfc822_strip_comments(shift);
2127
2128    if (!$rfc822re) {
2129        $rfc822re = make_rfc822re();
2130    }
2131    # * null list items are valid according to the RFC
2132    # * the '1' business is to aid in distinguishing failure from no results
2133
2134    my @r;
2135    if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so &&
2136	$s =~ m/^$rfc822_char*$/) {
2137        while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) {
2138            push(@r, $1);
2139        }
2140        return wantarray ? (scalar(@r), @r) : 1;
2141    }
2142    return wantarray ? () : 0;
2143}
2144