xref: /qemu/scripts/get_maintainer.pl (revision 6273d113)
1#!/usr/bin/perl -w
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;
14
15my $P = $0;
16my $V = '0.26';
17
18use Getopt::Long qw(:config no_auto_abbrev);
19
20my $lk_path = "./";
21my $email = 1;
22my $email_usename = 1;
23my $email_maintainer = 1;
24my $email_list = 1;
25my $email_subscriber_list = 0;
26my $email_git_penguin_chiefs = 0;
27my $email_git = 0;
28my $email_git_all_signature_types = 0;
29my $email_git_blame = 0;
30my $email_git_blame_signatures = 1;
31my $email_git_fallback = 1;
32my $email_git_min_signatures = 1;
33my $email_git_max_maintainers = 5;
34my $email_git_min_percent = 5;
35my $email_git_since = "1-year-ago";
36my $email_hg_since = "-365";
37my $interactive = 0;
38my $email_remove_duplicates = 1;
39my $email_use_mailmap = 1;
40my $output_multiline = 1;
41my $output_separator = ", ";
42my $output_roles = 0;
43my $output_rolestats = 1;
44my $scm = 0;
45my $web = 0;
46my $subsystem = 0;
47my $status = 0;
48my $keywords = 1;
49my $sections = 0;
50my $file_emails = 0;
51my $from_filename = 0;
52my $pattern_depth = 0;
53my $version = 0;
54my $help = 0;
55
56my $vcs_used = 0;
57
58my $exit = 0;
59
60my %commit_author_hash;
61my %commit_signer_hash;
62
63my @penguin_chief = ();
64push(@penguin_chief, "Linus Torvalds:torvalds\@linux-foundation.org");
65#Andrew wants in on most everything - 2009/01/14
66#push(@penguin_chief, "Andrew Morton:akpm\@linux-foundation.org");
67
68my @penguin_chief_names = ();
69foreach my $chief (@penguin_chief) {
70    if ($chief =~ m/^(.*):(.*)/) {
71	my $chief_name = $1;
72	my $chief_addr = $2;
73	push(@penguin_chief_names, $chief_name);
74    }
75}
76my $penguin_chiefs = "\(" . join("|", @penguin_chief_names) . "\)";
77
78# Signature types of people who are either
79# 	a) responsible for the code in question, or
80# 	b) familiar enough with it to give relevant feedback
81my @signature_tags = ();
82push(@signature_tags, "Signed-off-by:");
83push(@signature_tags, "Reviewed-by:");
84push(@signature_tags, "Acked-by:");
85
86my $signature_pattern = "\(" . join("|", @signature_tags) . "\)";
87
88# rfc822 email address - preloaded methods go here.
89my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])";
90my $rfc822_char = '[\\000-\\377]';
91
92# VCS command support: class-like functions and strings
93
94my %VCS_cmds;
95
96my %VCS_cmds_git = (
97    "execute_cmd" => \&git_execute_cmd,
98    "available" => '(which("git") ne "") && (-d ".git")',
99    "find_signers_cmd" =>
100	"git log --no-color --follow --since=\$email_git_since " .
101	    '--format="GitCommit: %H%n' .
102		      'GitAuthor: %an <%ae>%n' .
103		      'GitDate: %aD%n' .
104		      'GitSubject: %s%n' .
105		      '%b%n"' .
106	    " -- \$file",
107    "find_commit_signers_cmd" =>
108	"git log --no-color " .
109	    '--format="GitCommit: %H%n' .
110		      'GitAuthor: %an <%ae>%n' .
111		      'GitDate: %aD%n' .
112		      'GitSubject: %s%n' .
113		      '%b%n"' .
114	    " -1 \$commit",
115    "find_commit_author_cmd" =>
116	"git log --no-color " .
117	    '--format="GitCommit: %H%n' .
118		      'GitAuthor: %an <%ae>%n' .
119		      'GitDate: %aD%n' .
120		      'GitSubject: %s%n"' .
121	    " -1 \$commit",
122    "blame_range_cmd" => "git blame -l -L \$diff_start,+\$diff_length \$file",
123    "blame_file_cmd" => "git blame -l \$file",
124    "commit_pattern" => "^GitCommit: ([0-9a-f]{40,40})",
125    "blame_commit_pattern" => "^([0-9a-f]+) ",
126    "author_pattern" => "^GitAuthor: (.*)",
127    "subject_pattern" => "^GitSubject: (.*)",
128);
129
130my %VCS_cmds_hg = (
131    "execute_cmd" => \&hg_execute_cmd,
132    "available" => '(which("hg") ne "") && (-d ".hg")',
133    "find_signers_cmd" =>
134	"hg log --date=\$email_hg_since " .
135	    "--template='HgCommit: {node}\\n" .
136	                "HgAuthor: {author}\\n" .
137			"HgSubject: {desc}\\n'" .
138	    " -- \$file",
139    "find_commit_signers_cmd" =>
140	"hg log " .
141	    "--template='HgSubject: {desc}\\n'" .
142	    " -r \$commit",
143    "find_commit_author_cmd" =>
144	"hg log " .
145	    "--template='HgCommit: {node}\\n" .
146		        "HgAuthor: {author}\\n" .
147			"HgSubject: {desc|firstline}\\n'" .
148	    " -r \$commit",
149    "blame_range_cmd" => "",		# not supported
150    "blame_file_cmd" => "hg blame -n \$file",
151    "commit_pattern" => "^HgCommit: ([0-9a-f]{40,40})",
152    "blame_commit_pattern" => "^([ 0-9a-f]+):",
153    "author_pattern" => "^HgAuthor: (.*)",
154    "subject_pattern" => "^HgSubject: (.*)",
155);
156
157my $conf = which_conf(".get_maintainer.conf");
158if (-f $conf) {
159    my @conf_args;
160    open(my $conffile, '<', "$conf")
161	or warn "$P: Can't find a readable .get_maintainer.conf file $!\n";
162
163    while (<$conffile>) {
164	my $line = $_;
165
166	$line =~ s/\s*\n?$//g;
167	$line =~ s/^\s*//g;
168	$line =~ s/\s+/ /g;
169
170	next if ($line =~ m/^\s*#/);
171	next if ($line =~ m/^\s*$/);
172
173	my @words = split(" ", $line);
174	foreach my $word (@words) {
175	    last if ($word =~ m/^#/);
176	    push (@conf_args, $word);
177	}
178    }
179    close($conffile);
180    unshift(@ARGV, @conf_args) if @conf_args;
181}
182
183if (!GetOptions(
184		'email!' => \$email,
185		'git!' => \$email_git,
186		'git-all-signature-types!' => \$email_git_all_signature_types,
187		'git-blame!' => \$email_git_blame,
188		'git-blame-signatures!' => \$email_git_blame_signatures,
189		'git-fallback!' => \$email_git_fallback,
190		'git-chief-penguins!' => \$email_git_penguin_chiefs,
191		'git-min-signatures=i' => \$email_git_min_signatures,
192		'git-max-maintainers=i' => \$email_git_max_maintainers,
193		'git-min-percent=i' => \$email_git_min_percent,
194		'git-since=s' => \$email_git_since,
195		'hg-since=s' => \$email_hg_since,
196		'i|interactive!' => \$interactive,
197		'remove-duplicates!' => \$email_remove_duplicates,
198		'mailmap!' => \$email_use_mailmap,
199		'm!' => \$email_maintainer,
200		'n!' => \$email_usename,
201		'l!' => \$email_list,
202		's!' => \$email_subscriber_list,
203		'multiline!' => \$output_multiline,
204		'roles!' => \$output_roles,
205		'rolestats!' => \$output_rolestats,
206		'separator=s' => \$output_separator,
207		'subsystem!' => \$subsystem,
208		'status!' => \$status,
209		'scm!' => \$scm,
210		'web!' => \$web,
211		'pattern-depth=i' => \$pattern_depth,
212		'k|keywords!' => \$keywords,
213		'sections!' => \$sections,
214		'fe|file-emails!' => \$file_emails,
215		'f|file' => \$from_filename,
216		'v|version' => \$version,
217		'h|help|usage' => \$help,
218		)) {
219    die "$P: invalid argument - use --help if necessary\n";
220}
221
222if ($help != 0) {
223    usage();
224    exit 0;
225}
226
227if ($version != 0) {
228    print("${P} ${V}\n");
229    exit 0;
230}
231
232if (-t STDIN && !@ARGV) {
233    # We're talking to a terminal, but have no command line arguments.
234    die "$P: missing patchfile or -f file - use --help if necessary\n";
235}
236
237$output_multiline = 0 if ($output_separator ne ", ");
238$output_rolestats = 1 if ($interactive);
239$output_roles = 1 if ($output_rolestats);
240
241if ($sections) {
242    $email = 0;
243    $email_list = 0;
244    $scm = 0;
245    $status = 0;
246    $subsystem = 0;
247    $web = 0;
248    $keywords = 0;
249    $interactive = 0;
250} else {
251    my $selections = $email + $scm + $status + $subsystem + $web;
252    if ($selections == 0) {
253	die "$P:  Missing required option: email, scm, status, subsystem or web\n";
254    }
255}
256
257if ($email &&
258    ($email_maintainer + $email_list + $email_subscriber_list +
259     $email_git + $email_git_penguin_chiefs + $email_git_blame) == 0) {
260    die "$P: Please select at least 1 email option\n";
261}
262
263if (!top_of_tree($lk_path)) {
264    die "$P: The current directory does not appear to be "
265	. "a QEMU source tree.\n";
266}
267
268## Read MAINTAINERS for type/value pairs
269
270my @typevalue = ();
271my %keyword_hash;
272
273open (my $maint, '<', "${lk_path}MAINTAINERS")
274    or die "$P: Can't open MAINTAINERS: $!\n";
275while (<$maint>) {
276    my $line = $_;
277
278    if ($line =~ m/^(\C):\s*(.*)/) {
279	my $type = $1;
280	my $value = $2;
281
282	##Filename pattern matching
283	if ($type eq "F" || $type eq "X") {
284	    $value =~ s@\.@\\\.@g;       ##Convert . to \.
285	    $value =~ s/\*/\.\*/g;       ##Convert * to .*
286	    $value =~ s/\?/\./g;         ##Convert ? to .
287	    ##if pattern is a directory and it lacks a trailing slash, add one
288	    if ((-d $value)) {
289		$value =~ s@([^/])$@$1/@;
290	    }
291	} elsif ($type eq "K") {
292	    $keyword_hash{@typevalue} = $value;
293	}
294	push(@typevalue, "$type:$value");
295    } elsif (!/^(\s)*$/) {
296	$line =~ s/\n$//g;
297	push(@typevalue, $line);
298    }
299}
300close($maint);
301
302
303#
304# Read mail address map
305#
306
307my $mailmap;
308
309read_mailmap();
310
311sub read_mailmap {
312    $mailmap = {
313	names => {},
314	addresses => {}
315    };
316
317    return if (!$email_use_mailmap || !(-f "${lk_path}.mailmap"));
318
319    open(my $mailmap_file, '<', "${lk_path}.mailmap")
320	or warn "$P: Can't open .mailmap: $!\n";
321
322    while (<$mailmap_file>) {
323	s/#.*$//; #strip comments
324	s/^\s+|\s+$//g; #trim
325
326	next if (/^\s*$/); #skip empty lines
327	#entries have one of the following formats:
328	# name1 <mail1>
329	# <mail1> <mail2>
330	# name1 <mail1> <mail2>
331	# name1 <mail1> name2 <mail2>
332	# (see man git-shortlog)
333
334	if (/^([^<]+)<([^>]+)>$/) {
335	    my $real_name = $1;
336	    my $address = $2;
337
338	    $real_name =~ s/\s+$//;
339	    ($real_name, $address) = parse_email("$real_name <$address>");
340	    $mailmap->{names}->{$address} = $real_name;
341
342	} elsif (/^<([^>]+)>\s*<([^>]+)>$/) {
343	    my $real_address = $1;
344	    my $wrong_address = $2;
345
346	    $mailmap->{addresses}->{$wrong_address} = $real_address;
347
348	} elsif (/^(.+)<([^>]+)>\s*<([^>]+)>$/) {
349	    my $real_name = $1;
350	    my $real_address = $2;
351	    my $wrong_address = $3;
352
353	    $real_name =~ s/\s+$//;
354	    ($real_name, $real_address) =
355		parse_email("$real_name <$real_address>");
356	    $mailmap->{names}->{$wrong_address} = $real_name;
357	    $mailmap->{addresses}->{$wrong_address} = $real_address;
358
359	} elsif (/^(.+)<([^>]+)>\s*(.+)\s*<([^>]+)>$/) {
360	    my $real_name = $1;
361	    my $real_address = $2;
362	    my $wrong_name = $3;
363	    my $wrong_address = $4;
364
365	    $real_name =~ s/\s+$//;
366	    ($real_name, $real_address) =
367		parse_email("$real_name <$real_address>");
368
369	    $wrong_name =~ s/\s+$//;
370	    ($wrong_name, $wrong_address) =
371		parse_email("$wrong_name <$wrong_address>");
372
373	    my $wrong_email = format_email($wrong_name, $wrong_address, 1);
374	    $mailmap->{names}->{$wrong_email} = $real_name;
375	    $mailmap->{addresses}->{$wrong_email} = $real_address;
376	}
377    }
378    close($mailmap_file);
379}
380
381## use the filenames on the command line or find the filenames in the patchfiles
382
383my @files = ();
384my @range = ();
385my @keyword_tvi = ();
386my @file_emails = ();
387
388if (!@ARGV) {
389    push(@ARGV, "&STDIN");
390}
391
392foreach my $file (@ARGV) {
393    if ($file ne "&STDIN") {
394	##if $file is a directory and it lacks a trailing slash, add one
395	if ((-d $file)) {
396	    $file =~ s@([^/])$@$1/@;
397	} elsif (!(-f $file)) {
398	    die "$P: file '${file}' not found\n";
399	}
400    }
401    if ($from_filename) {
402	push(@files, $file);
403	if ($file ne "MAINTAINERS" && -f $file && ($keywords || $file_emails)) {
404	    open(my $f, '<', $file)
405		or die "$P: Can't open $file: $!\n";
406	    my $text = do { local($/) ; <$f> };
407	    close($f);
408	    if ($keywords) {
409		foreach my $line (keys %keyword_hash) {
410		    if ($text =~ m/$keyword_hash{$line}/x) {
411			push(@keyword_tvi, $line);
412		    }
413		}
414	    }
415	    if ($file_emails) {
416		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;
417		push(@file_emails, clean_file_emails(@poss_addr));
418	    }
419	}
420    } else {
421	my $file_cnt = @files;
422	my $lastfile;
423
424	open(my $patch, "< $file")
425	    or die "$P: Can't open $file: $!\n";
426
427	# We can check arbitrary information before the patch
428	# like the commit message, mail headers, etc...
429	# This allows us to match arbitrary keywords against any part
430	# of a git format-patch generated file (subject tags, etc...)
431
432	my $patch_prefix = "";			#Parsing the intro
433
434	while (<$patch>) {
435	    my $patch_line = $_;
436	    if (m/^\+\+\+\s+(\S+)/) {
437		my $filename = $1;
438		$filename =~ s@^[^/]*/@@;
439		$filename =~ s@\n@@;
440		$lastfile = $filename;
441		push(@files, $filename);
442		$patch_prefix = "^[+-].*";	#Now parsing the actual patch
443	    } elsif (m/^\@\@ -(\d+),(\d+)/) {
444		if ($email_git_blame) {
445		    push(@range, "$lastfile:$1:$2");
446		}
447	    } elsif ($keywords) {
448		foreach my $line (keys %keyword_hash) {
449		    if ($patch_line =~ m/${patch_prefix}$keyword_hash{$line}/x) {
450			push(@keyword_tvi, $line);
451		    }
452		}
453	    }
454	}
455	close($patch);
456
457	if ($file_cnt == @files) {
458	    warn "$P: file '${file}' doesn't appear to be a patch.  "
459		. "Add -f to options?\n";
460	}
461	@files = sort_and_uniq(@files);
462    }
463}
464
465@file_emails = uniq(@file_emails);
466
467my %email_hash_name;
468my %email_hash_address;
469my @email_to = ();
470my %hash_list_to;
471my @list_to = ();
472my @scm = ();
473my @web = ();
474my @subsystem = ();
475my @status = ();
476my %deduplicate_name_hash = ();
477my %deduplicate_address_hash = ();
478
479my @maintainers = get_maintainers();
480
481if (@maintainers) {
482    @maintainers = merge_email(@maintainers);
483    output(@maintainers);
484}
485
486if ($scm) {
487    @scm = uniq(@scm);
488    output(@scm);
489}
490
491if ($status) {
492    @status = uniq(@status);
493    output(@status);
494}
495
496if ($subsystem) {
497    @subsystem = uniq(@subsystem);
498    output(@subsystem);
499}
500
501if ($web) {
502    @web = uniq(@web);
503    output(@web);
504}
505
506exit($exit);
507
508sub range_is_maintained {
509    my ($start, $end) = @_;
510
511    for (my $i = $start; $i < $end; $i++) {
512	my $line = $typevalue[$i];
513	if ($line =~ m/^(\C):\s*(.*)/) {
514	    my $type = $1;
515	    my $value = $2;
516	    if ($type eq 'S') {
517		if ($value =~ /(maintain|support)/i) {
518		    return 1;
519		}
520	    }
521	}
522    }
523    return 0;
524}
525
526sub range_has_maintainer {
527    my ($start, $end) = @_;
528
529    for (my $i = $start; $i < $end; $i++) {
530	my $line = $typevalue[$i];
531	if ($line =~ m/^(\C):\s*(.*)/) {
532	    my $type = $1;
533	    my $value = $2;
534	    if ($type eq 'M') {
535		return 1;
536	    }
537	}
538    }
539    return 0;
540}
541
542sub get_maintainers {
543    %email_hash_name = ();
544    %email_hash_address = ();
545    %commit_author_hash = ();
546    %commit_signer_hash = ();
547    @email_to = ();
548    %hash_list_to = ();
549    @list_to = ();
550    @scm = ();
551    @web = ();
552    @subsystem = ();
553    @status = ();
554    %deduplicate_name_hash = ();
555    %deduplicate_address_hash = ();
556    if ($email_git_all_signature_types) {
557	$signature_pattern = "(.+?)[Bb][Yy]:";
558    } else {
559	$signature_pattern = "\(" . join("|", @signature_tags) . "\)";
560    }
561
562    # Find responsible parties
563
564    my %exact_pattern_match_hash = ();
565
566    foreach my $file (@files) {
567
568	my %hash;
569	my $tvi = find_first_section();
570	while ($tvi < @typevalue) {
571	    my $start = find_starting_index($tvi);
572	    my $end = find_ending_index($tvi);
573	    my $exclude = 0;
574	    my $i;
575
576	    #Do not match excluded file patterns
577
578	    for ($i = $start; $i < $end; $i++) {
579		my $line = $typevalue[$i];
580		if ($line =~ m/^(\C):\s*(.*)/) {
581		    my $type = $1;
582		    my $value = $2;
583		    if ($type eq 'X') {
584			if (file_match_pattern($file, $value)) {
585			    $exclude = 1;
586			    last;
587			}
588		    }
589		}
590	    }
591
592	    if (!$exclude) {
593		for ($i = $start; $i < $end; $i++) {
594		    my $line = $typevalue[$i];
595		    if ($line =~ m/^(\C):\s*(.*)/) {
596			my $type = $1;
597			my $value = $2;
598			if ($type eq 'F') {
599			    if (file_match_pattern($file, $value)) {
600				my $value_pd = ($value =~ tr@/@@);
601				my $file_pd = ($file  =~ tr@/@@);
602				$value_pd++ if (substr($value,-1,1) ne "/");
603				$value_pd = -1 if ($value =~ /^\.\*/);
604				if ($value_pd >= $file_pd &&
605				    range_is_maintained($start, $end) &&
606				    range_has_maintainer($start, $end)) {
607				    $exact_pattern_match_hash{$file} = 1;
608				}
609				if ($pattern_depth == 0 ||
610				    (($file_pd - $value_pd) < $pattern_depth)) {
611				    $hash{$tvi} = $value_pd;
612				}
613			    }
614			}
615		    }
616		}
617	    }
618	    $tvi = $end + 1;
619	}
620
621	foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
622	    add_categories($line);
623	    if ($sections) {
624		my $i;
625		my $start = find_starting_index($line);
626		my $end = find_ending_index($line);
627		for ($i = $start; $i < $end; $i++) {
628		    my $line = $typevalue[$i];
629		    if ($line =~ /^[FX]:/) {		##Restore file patterns
630			$line =~ s/([^\\])\.([^\*])/$1\?$2/g;
631			$line =~ s/([^\\])\.$/$1\?/g;	##Convert . back to ?
632			$line =~ s/\\\./\./g;       	##Convert \. to .
633			$line =~ s/\.\*/\*/g;       	##Convert .* to *
634		    }
635		    $line =~ s/^([A-Z]):/$1:\t/g;
636		    print("$line\n");
637		}
638		print("\n");
639	    }
640	}
641    }
642
643    if ($keywords) {
644	@keyword_tvi = sort_and_uniq(@keyword_tvi);
645	foreach my $line (@keyword_tvi) {
646	    add_categories($line);
647	}
648    }
649
650    foreach my $email (@email_to, @list_to) {
651	$email->[0] = deduplicate_email($email->[0]);
652    }
653
654    foreach my $file (@files) {
655	if ($email &&
656	    ($email_git || ($email_git_fallback &&
657			    !$exact_pattern_match_hash{$file}))) {
658	    vcs_file_signoffs($file);
659	}
660	if ($email && $email_git_blame) {
661	    vcs_file_blame($file);
662	}
663    }
664
665    if ($email) {
666	foreach my $chief (@penguin_chief) {
667	    if ($chief =~ m/^(.*):(.*)/) {
668		my $email_address;
669
670		$email_address = format_email($1, $2, $email_usename);
671		if ($email_git_penguin_chiefs) {
672		    push(@email_to, [$email_address, 'chief penguin']);
673		} else {
674		    @email_to = grep($_->[0] !~ /${email_address}/, @email_to);
675		}
676	    }
677	}
678
679	foreach my $email (@file_emails) {
680	    my ($name, $address) = parse_email($email);
681
682	    my $tmp_email = format_email($name, $address, $email_usename);
683	    push_email_address($tmp_email, '');
684	    add_role($tmp_email, 'in file');
685	}
686    }
687
688    my @to = ();
689    if ($email || $email_list) {
690	if ($email) {
691	    @to = (@to, @email_to);
692	}
693	if ($email_list) {
694	    @to = (@to, @list_to);
695	}
696    }
697
698    if ($interactive) {
699	@to = interactive_get_maintainers(\@to);
700    }
701
702    return @to;
703}
704
705sub file_match_pattern {
706    my ($file, $pattern) = @_;
707    if (substr($pattern, -1) eq "/") {
708	if ($file =~ m@^$pattern@) {
709	    return 1;
710	}
711    } else {
712	if ($file =~ m@^$pattern@) {
713	    my $s1 = ($file =~ tr@/@@);
714	    my $s2 = ($pattern =~ tr@/@@);
715	    if ($s1 == $s2) {
716		return 1;
717	    }
718	}
719    }
720    return 0;
721}
722
723sub usage {
724    print <<EOT;
725usage: $P [options] patchfile
726       $P [options] -f file|directory
727version: $V
728
729MAINTAINER field selection options:
730  --email => print email address(es) if any
731    --git => include recent git \*-by: signers
732    --git-all-signature-types => include signers regardless of signature type
733        or use only ${signature_pattern} signers (default: $email_git_all_signature_types)
734    --git-fallback => use git when no exact MAINTAINERS pattern (default: $email_git_fallback)
735    --git-chief-penguins => include ${penguin_chiefs}
736    --git-min-signatures => number of signatures required (default: $email_git_min_signatures)
737    --git-max-maintainers => maximum maintainers to add (default: $email_git_max_maintainers)
738    --git-min-percent => minimum percentage of commits required (default: $email_git_min_percent)
739    --git-blame => use git blame to find modified commits for patch or file
740    --git-since => git history to use (default: $email_git_since)
741    --hg-since => hg history to use (default: $email_hg_since)
742    --interactive => display a menu (mostly useful if used with the --git option)
743    --m => include maintainer(s) if any
744    --n => include name 'Full Name <addr\@domain.tld>'
745    --l => include list(s) if any
746    --s => include subscriber only list(s) if any
747    --remove-duplicates => minimize duplicate email names/addresses
748    --roles => show roles (status:subsystem, git-signer, list, etc...)
749    --rolestats => show roles and statistics (commits/total_commits, %)
750    --file-emails => add email addresses found in -f file (default: 0 (off))
751  --scm => print SCM tree(s) if any
752  --status => print status if any
753  --subsystem => print subsystem name if any
754  --web => print website(s) if any
755
756Output type options:
757  --separator [, ] => separator for multiple entries on 1 line
758    using --separator also sets --nomultiline if --separator is not [, ]
759  --multiline => print 1 entry per line
760
761Other options:
762  --pattern-depth => Number of pattern directory traversals (default: 0 (all))
763  --keywords => scan patch for keywords (default: $keywords)
764  --sections => print all of the subsystem sections with pattern matches
765  --mailmap => use .mailmap file (default: $email_use_mailmap)
766  --version => show version
767  --help => show this help information
768
769Default options:
770  [--email --nogit --git-fallback --m --n --l --multiline -pattern-depth=0
771   --remove-duplicates --rolestats]
772
773Notes:
774  Using "-f directory" may give unexpected results:
775      Used with "--git", git signators for _all_ files in and below
776          directory are examined as git recurses directories.
777          Any specified X: (exclude) pattern matches are _not_ ignored.
778      Used with "--nogit", directory is used as a pattern match,
779          no individual file within the directory or subdirectory
780          is matched.
781      Used with "--git-blame", does not iterate all files in directory
782  Using "--git-blame" is slow and may add old committers and authors
783      that are no longer active maintainers to the output.
784  Using "--roles" or "--rolestats" with git send-email --cc-cmd or any
785      other automated tools that expect only ["name"] <email address>
786      may not work because of additional output after <email address>.
787  Using "--rolestats" and "--git-blame" shows the #/total=% commits,
788      not the percentage of the entire file authored.  # of commits is
789      not a good measure of amount of code authored.  1 major commit may
790      contain a thousand lines, 5 trivial commits may modify a single line.
791  If git is not installed, but mercurial (hg) is installed and an .hg
792      repository exists, the following options apply to mercurial:
793          --git,
794          --git-min-signatures, --git-max-maintainers, --git-min-percent, and
795          --git-blame
796      Use --hg-since not --git-since to control date selection
797  File ".get_maintainer.conf", if it exists in the QEMU source root
798      directory, can change whatever get_maintainer defaults are desired.
799      Entries in this file can be any command line argument.
800      This file is prepended to any additional command line arguments.
801      Multiple lines and # comments are allowed.
802EOT
803}
804
805sub top_of_tree {
806    my ($lk_path) = @_;
807
808    if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
809	$lk_path .= "/";
810    }
811    if (    (-f "${lk_path}COPYING")
812        && (-f "${lk_path}MAINTAINERS")
813        && (-f "${lk_path}Makefile")
814        && (-d "${lk_path}docs")
815        && (-f "${lk_path}VERSION")
816        && (-f "${lk_path}vl.c")) {
817	return 1;
818    }
819    return 0;
820}
821
822sub parse_email {
823    my ($formatted_email) = @_;
824
825    my $name = "";
826    my $address = "";
827
828    if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) {
829	$name = $1;
830	$address = $2;
831    } elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) {
832	$address = $1;
833    } elsif ($formatted_email =~ /^(.+\@\S*).*$/) {
834	$address = $1;
835    }
836
837    $name =~ s/^\s+|\s+$//g;
838    $name =~ s/^\"|\"$//g;
839    $address =~ s/^\s+|\s+$//g;
840
841    if ($name =~ /[^\w \-]/i) {  	 ##has "must quote" chars
842	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
843	$name = "\"$name\"";
844    }
845
846    return ($name, $address);
847}
848
849sub format_email {
850    my ($name, $address, $usename) = @_;
851
852    my $formatted_email;
853
854    $name =~ s/^\s+|\s+$//g;
855    $name =~ s/^\"|\"$//g;
856    $address =~ s/^\s+|\s+$//g;
857
858    if ($name =~ /[^\w \-]/i) {          ##has "must quote" chars
859	$name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
860	$name = "\"$name\"";
861    }
862
863    if ($usename) {
864	if ("$name" eq "") {
865	    $formatted_email = "$address";
866	} else {
867	    $formatted_email = "$name <$address>";
868	}
869    } else {
870	$formatted_email = $address;
871    }
872
873    return $formatted_email;
874}
875
876sub find_first_section {
877    my $index = 0;
878
879    while ($index < @typevalue) {
880	my $tv = $typevalue[$index];
881	if (($tv =~ m/^(\C):\s*(.*)/)) {
882	    last;
883	}
884	$index++;
885    }
886
887    return $index;
888}
889
890sub find_starting_index {
891    my ($index) = @_;
892
893    while ($index > 0) {
894	my $tv = $typevalue[$index];
895	if (!($tv =~ m/^(\C):\s*(.*)/)) {
896	    last;
897	}
898	$index--;
899    }
900
901    return $index;
902}
903
904sub find_ending_index {
905    my ($index) = @_;
906
907    while ($index < @typevalue) {
908	my $tv = $typevalue[$index];
909	if (!($tv =~ m/^(\C):\s*(.*)/)) {
910	    last;
911	}
912	$index++;
913    }
914
915    return $index;
916}
917
918sub get_maintainer_role {
919    my ($index) = @_;
920
921    my $i;
922    my $start = find_starting_index($index);
923    my $end = find_ending_index($index);
924
925    my $role = "unknown";
926    my $subsystem = $typevalue[$start];
927    if (length($subsystem) > 20) {
928	$subsystem = substr($subsystem, 0, 17);
929	$subsystem =~ s/\s*$//;
930	$subsystem = $subsystem . "...";
931    }
932
933    for ($i = $start + 1; $i < $end; $i++) {
934	my $tv = $typevalue[$i];
935	if ($tv =~ m/^(\C):\s*(.*)/) {
936	    my $ptype = $1;
937	    my $pvalue = $2;
938	    if ($ptype eq "S") {
939		$role = $pvalue;
940	    }
941	}
942    }
943
944    $role = lc($role);
945    if      ($role eq "supported") {
946	$role = "supporter";
947    } elsif ($role eq "maintained") {
948	$role = "maintainer";
949    } elsif ($role eq "odd fixes") {
950	$role = "odd fixer";
951    } elsif ($role eq "orphan") {
952	$role = "orphan minder";
953    } elsif ($role eq "obsolete") {
954	$role = "obsolete minder";
955    } elsif ($role eq "buried alive in reporters") {
956	$role = "chief penguin";
957    }
958
959    return $role . ":" . $subsystem;
960}
961
962sub get_list_role {
963    my ($index) = @_;
964
965    my $i;
966    my $start = find_starting_index($index);
967    my $end = find_ending_index($index);
968
969    my $subsystem = $typevalue[$start];
970    if (length($subsystem) > 20) {
971	$subsystem = substr($subsystem, 0, 17);
972	$subsystem =~ s/\s*$//;
973	$subsystem = $subsystem . "...";
974    }
975
976    if ($subsystem eq "THE REST") {
977	$subsystem = "";
978    }
979
980    return $subsystem;
981}
982
983sub add_categories {
984    my ($index) = @_;
985
986    my $i;
987    my $start = find_starting_index($index);
988    my $end = find_ending_index($index);
989
990    push(@subsystem, $typevalue[$start]);
991
992    for ($i = $start + 1; $i < $end; $i++) {
993	my $tv = $typevalue[$i];
994	if ($tv =~ m/^(\C):\s*(.*)/) {
995	    my $ptype = $1;
996	    my $pvalue = $2;
997	    if ($ptype eq "L") {
998		my $list_address = $pvalue;
999		my $list_additional = "";
1000		my $list_role = get_list_role($i);
1001
1002		if ($list_role ne "") {
1003		    $list_role = ":" . $list_role;
1004		}
1005		if ($list_address =~ m/([^\s]+)\s+(.*)$/) {
1006		    $list_address = $1;
1007		    $list_additional = $2;
1008		}
1009		if ($list_additional =~ m/subscribers-only/) {
1010		    if ($email_subscriber_list) {
1011			if (!$hash_list_to{lc($list_address)}) {
1012			    $hash_list_to{lc($list_address)} = 1;
1013			    push(@list_to, [$list_address,
1014					    "subscriber list${list_role}"]);
1015			}
1016		    }
1017		} else {
1018		    if ($email_list) {
1019			if (!$hash_list_to{lc($list_address)}) {
1020			    $hash_list_to{lc($list_address)} = 1;
1021			    if ($list_additional =~ m/moderated/) {
1022				push(@list_to, [$list_address,
1023						"moderated list${list_role}"]);
1024			    } else {
1025				push(@list_to, [$list_address,
1026						"open list${list_role}"]);
1027			    }
1028			}
1029		    }
1030		}
1031	    } elsif ($ptype eq "M") {
1032		my ($name, $address) = parse_email($pvalue);
1033		if ($name eq "") {
1034		    if ($i > 0) {
1035			my $tv = $typevalue[$i - 1];
1036			if ($tv =~ m/^(\C):\s*(.*)/) {
1037			    if ($1 eq "P") {
1038				$name = $2;
1039				$pvalue = format_email($name, $address, $email_usename);
1040			    }
1041			}
1042		    }
1043		}
1044		if ($email_maintainer) {
1045		    my $role = get_maintainer_role($i);
1046		    push_email_addresses($pvalue, $role);
1047		}
1048	    } elsif ($ptype eq "T") {
1049		push(@scm, $pvalue);
1050	    } elsif ($ptype eq "W") {
1051		push(@web, $pvalue);
1052	    } elsif ($ptype eq "S") {
1053		push(@status, $pvalue);
1054	    }
1055	}
1056    }
1057}
1058
1059sub email_inuse {
1060    my ($name, $address) = @_;
1061
1062    return 1 if (($name eq "") && ($address eq ""));
1063    return 1 if (($name ne "") && exists($email_hash_name{lc($name)}));
1064    return 1 if (($address ne "") && exists($email_hash_address{lc($address)}));
1065
1066    return 0;
1067}
1068
1069sub push_email_address {
1070    my ($line, $role) = @_;
1071
1072    my ($name, $address) = parse_email($line);
1073
1074    if ($address eq "") {
1075	return 0;
1076    }
1077
1078    if (!$email_remove_duplicates) {
1079	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1080    } elsif (!email_inuse($name, $address)) {
1081	push(@email_to, [format_email($name, $address, $email_usename), $role]);
1082	$email_hash_name{lc($name)}++ if ($name ne "");
1083	$email_hash_address{lc($address)}++;
1084    }
1085
1086    return 1;
1087}
1088
1089sub push_email_addresses {
1090    my ($address, $role) = @_;
1091
1092    my @address_list = ();
1093
1094    if (rfc822_valid($address)) {
1095	push_email_address($address, $role);
1096    } elsif (@address_list = rfc822_validlist($address)) {
1097	my $array_count = shift(@address_list);
1098	while (my $entry = shift(@address_list)) {
1099	    push_email_address($entry, $role);
1100	}
1101    } else {
1102	if (!push_email_address($address, $role)) {
1103	    warn("Invalid MAINTAINERS address: '" . $address . "'\n");
1104	}
1105    }
1106}
1107
1108sub add_role {
1109    my ($line, $role) = @_;
1110
1111    my ($name, $address) = parse_email($line);
1112    my $email = format_email($name, $address, $email_usename);
1113
1114    foreach my $entry (@email_to) {
1115	if ($email_remove_duplicates) {
1116	    my ($entry_name, $entry_address) = parse_email($entry->[0]);
1117	    if (($name eq $entry_name || $address eq $entry_address)
1118		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1119	    ) {
1120		if ($entry->[1] eq "") {
1121		    $entry->[1] = "$role";
1122		} else {
1123		    $entry->[1] = "$entry->[1],$role";
1124		}
1125	    }
1126	} else {
1127	    if ($email eq $entry->[0]
1128		&& ($role eq "" || !($entry->[1] =~ m/$role/))
1129	    ) {
1130		if ($entry->[1] eq "") {
1131		    $entry->[1] = "$role";
1132		} else {
1133		    $entry->[1] = "$entry->[1],$role";
1134		}
1135	    }
1136	}
1137    }
1138}
1139
1140sub which {
1141    my ($bin) = @_;
1142
1143    foreach my $path (split(/:/, $ENV{PATH})) {
1144	if (-e "$path/$bin") {
1145	    return "$path/$bin";
1146	}
1147    }
1148
1149    return "";
1150}
1151
1152sub which_conf {
1153    my ($conf) = @_;
1154
1155    foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
1156	if (-e "$path/$conf") {
1157	    return "$path/$conf";
1158	}
1159    }
1160
1161    return "";
1162}
1163
1164sub mailmap_email {
1165    my ($line) = @_;
1166
1167    my ($name, $address) = parse_email($line);
1168    my $email = format_email($name, $address, 1);
1169    my $real_name = $name;
1170    my $real_address = $address;
1171
1172    if (exists $mailmap->{names}->{$email} ||
1173	exists $mailmap->{addresses}->{$email}) {
1174	if (exists $mailmap->{names}->{$email}) {
1175	    $real_name = $mailmap->{names}->{$email};
1176	}
1177	if (exists $mailmap->{addresses}->{$email}) {
1178	    $real_address = $mailmap->{addresses}->{$email};
1179	}
1180    } else {
1181	if (exists $mailmap->{names}->{$address}) {
1182	    $real_name = $mailmap->{names}->{$address};
1183	}
1184	if (exists $mailmap->{addresses}->{$address}) {
1185	    $real_address = $mailmap->{addresses}->{$address};
1186	}
1187    }
1188    return format_email($real_name, $real_address, 1);
1189}
1190
1191sub mailmap {
1192    my (@addresses) = @_;
1193
1194    my @mapped_emails = ();
1195    foreach my $line (@addresses) {
1196	push(@mapped_emails, mailmap_email($line));
1197    }
1198    merge_by_realname(@mapped_emails) if ($email_use_mailmap);
1199    return @mapped_emails;
1200}
1201
1202sub merge_by_realname {
1203    my %address_map;
1204    my (@emails) = @_;
1205
1206    foreach my $email (@emails) {
1207	my ($name, $address) = parse_email($email);
1208	if (exists $address_map{$name}) {
1209	    $address = $address_map{$name};
1210	    $email = format_email($name, $address, 1);
1211	} else {
1212	    $address_map{$name} = $address;
1213	}
1214    }
1215}
1216
1217sub git_execute_cmd {
1218    my ($cmd) = @_;
1219    my @lines = ();
1220
1221    my $output = `$cmd`;
1222    $output =~ s/^\s*//gm;
1223    @lines = split("\n", $output);
1224
1225    return @lines;
1226}
1227
1228sub hg_execute_cmd {
1229    my ($cmd) = @_;
1230    my @lines = ();
1231
1232    my $output = `$cmd`;
1233    @lines = split("\n", $output);
1234
1235    return @lines;
1236}
1237
1238sub extract_formatted_signatures {
1239    my (@signature_lines) = @_;
1240
1241    my @type = @signature_lines;
1242
1243    s/\s*(.*):.*/$1/ for (@type);
1244
1245    # cut -f2- -d":"
1246    s/\s*.*:\s*(.+)\s*/$1/ for (@signature_lines);
1247
1248## Reformat email addresses (with names) to avoid badly written signatures
1249
1250    foreach my $signer (@signature_lines) {
1251	$signer = deduplicate_email($signer);
1252    }
1253
1254    return (\@type, \@signature_lines);
1255}
1256
1257sub vcs_find_signers {
1258    my ($cmd) = @_;
1259    my $commits;
1260    my @lines = ();
1261    my @signatures = ();
1262
1263    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1264
1265    my $pattern = $VCS_cmds{"commit_pattern"};
1266
1267    $commits = grep(/$pattern/, @lines);	# of commits
1268
1269    @signatures = grep(/^[ \t]*${signature_pattern}.*\@.*$/, @lines);
1270
1271    return (0, @signatures) if !@signatures;
1272
1273    save_commits_by_author(@lines) if ($interactive);
1274    save_commits_by_signer(@lines) if ($interactive);
1275
1276    if (!$email_git_penguin_chiefs) {
1277	@signatures = grep(!/${penguin_chiefs}/i, @signatures);
1278    }
1279
1280    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
1281
1282    return ($commits, @$signers_ref);
1283}
1284
1285sub vcs_find_author {
1286    my ($cmd) = @_;
1287    my @lines = ();
1288
1289    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1290
1291    if (!$email_git_penguin_chiefs) {
1292	@lines = grep(!/${penguin_chiefs}/i, @lines);
1293    }
1294
1295    return @lines if !@lines;
1296
1297    my @authors = ();
1298    foreach my $line (@lines) {
1299	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1300	    my $author = $1;
1301	    my ($name, $address) = parse_email($author);
1302	    $author = format_email($name, $address, 1);
1303	    push(@authors, $author);
1304	}
1305    }
1306
1307    save_commits_by_author(@lines) if ($interactive);
1308    save_commits_by_signer(@lines) if ($interactive);
1309
1310    return @authors;
1311}
1312
1313sub vcs_save_commits {
1314    my ($cmd) = @_;
1315    my @lines = ();
1316    my @commits = ();
1317
1318    @lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1319
1320    foreach my $line (@lines) {
1321	if ($line =~ m/$VCS_cmds{"blame_commit_pattern"}/) {
1322	    push(@commits, $1);
1323	}
1324    }
1325
1326    return @commits;
1327}
1328
1329sub vcs_blame {
1330    my ($file) = @_;
1331    my $cmd;
1332    my @commits = ();
1333
1334    return @commits if (!(-f $file));
1335
1336    if (@range && $VCS_cmds{"blame_range_cmd"} eq "") {
1337	my @all_commits = ();
1338
1339	$cmd = $VCS_cmds{"blame_file_cmd"};
1340	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1341	@all_commits = vcs_save_commits($cmd);
1342
1343	foreach my $file_range_diff (@range) {
1344	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1345	    my $diff_file = $1;
1346	    my $diff_start = $2;
1347	    my $diff_length = $3;
1348	    next if ("$file" ne "$diff_file");
1349	    for (my $i = $diff_start; $i < $diff_start + $diff_length; $i++) {
1350		push(@commits, $all_commits[$i]);
1351	    }
1352	}
1353    } elsif (@range) {
1354	foreach my $file_range_diff (@range) {
1355	    next if (!($file_range_diff =~ m/(.+):(.+):(.+)/));
1356	    my $diff_file = $1;
1357	    my $diff_start = $2;
1358	    my $diff_length = $3;
1359	    next if ("$file" ne "$diff_file");
1360	    $cmd = $VCS_cmds{"blame_range_cmd"};
1361	    $cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1362	    push(@commits, vcs_save_commits($cmd));
1363	}
1364    } else {
1365	$cmd = $VCS_cmds{"blame_file_cmd"};
1366	$cmd =~ s/(\$\w+)/$1/eeg;		#interpolate $cmd
1367	@commits = vcs_save_commits($cmd);
1368    }
1369
1370    foreach my $commit (@commits) {
1371	$commit =~ s/^\^//g;
1372    }
1373
1374    return @commits;
1375}
1376
1377my $printed_novcs = 0;
1378sub vcs_exists {
1379    %VCS_cmds = %VCS_cmds_git;
1380    return 1 if eval $VCS_cmds{"available"};
1381    %VCS_cmds = %VCS_cmds_hg;
1382    return 2 if eval $VCS_cmds{"available"};
1383    %VCS_cmds = ();
1384    if (!$printed_novcs) {
1385	warn("$P: No supported VCS found.  Add --nogit to options?\n");
1386	warn("Using a git repository produces better results.\n");
1387	warn("Try latest git repository using:\n");
1388	warn("git clone git://git.qemu-project.org/qemu.git\n");
1389	$printed_novcs = 1;
1390    }
1391    return 0;
1392}
1393
1394sub vcs_is_git {
1395    vcs_exists();
1396    return $vcs_used == 1;
1397}
1398
1399sub vcs_is_hg {
1400    return $vcs_used == 2;
1401}
1402
1403sub interactive_get_maintainers {
1404    my ($list_ref) = @_;
1405    my @list = @$list_ref;
1406
1407    vcs_exists();
1408
1409    my %selected;
1410    my %authored;
1411    my %signed;
1412    my $count = 0;
1413    my $maintained = 0;
1414    foreach my $entry (@list) {
1415	$maintained = 1 if ($entry->[1] =~ /^(maintainer|supporter)/i);
1416	$selected{$count} = 1;
1417	$authored{$count} = 0;
1418	$signed{$count} = 0;
1419	$count++;
1420    }
1421
1422    #menu loop
1423    my $done = 0;
1424    my $print_options = 0;
1425    my $redraw = 1;
1426    while (!$done) {
1427	$count = 0;
1428	if ($redraw) {
1429	    printf STDERR "\n%1s %2s %-65s",
1430			  "*", "#", "email/list and role:stats";
1431	    if ($email_git ||
1432		($email_git_fallback && !$maintained) ||
1433		$email_git_blame) {
1434		print STDERR "auth sign";
1435	    }
1436	    print STDERR "\n";
1437	    foreach my $entry (@list) {
1438		my $email = $entry->[0];
1439		my $role = $entry->[1];
1440		my $sel = "";
1441		$sel = "*" if ($selected{$count});
1442		my $commit_author = $commit_author_hash{$email};
1443		my $commit_signer = $commit_signer_hash{$email};
1444		my $authored = 0;
1445		my $signed = 0;
1446		$authored++ for (@{$commit_author});
1447		$signed++ for (@{$commit_signer});
1448		printf STDERR "%1s %2d %-65s", $sel, $count + 1, $email;
1449		printf STDERR "%4d %4d", $authored, $signed
1450		    if ($authored > 0 || $signed > 0);
1451		printf STDERR "\n     %s\n", $role;
1452		if ($authored{$count}) {
1453		    my $commit_author = $commit_author_hash{$email};
1454		    foreach my $ref (@{$commit_author}) {
1455			print STDERR "     Author: @{$ref}[1]\n";
1456		    }
1457		}
1458		if ($signed{$count}) {
1459		    my $commit_signer = $commit_signer_hash{$email};
1460		    foreach my $ref (@{$commit_signer}) {
1461			print STDERR "     @{$ref}[2]: @{$ref}[1]\n";
1462		    }
1463		}
1464
1465		$count++;
1466	    }
1467	}
1468	my $date_ref = \$email_git_since;
1469	$date_ref = \$email_hg_since if (vcs_is_hg());
1470	if ($print_options) {
1471	    $print_options = 0;
1472	    if (vcs_exists()) {
1473		print STDERR <<EOT
1474
1475Version Control options:
1476g  use git history      [$email_git]
1477gf use git-fallback     [$email_git_fallback]
1478b  use git blame        [$email_git_blame]
1479bs use blame signatures [$email_git_blame_signatures]
1480c# minimum commits      [$email_git_min_signatures]
1481%# min percent          [$email_git_min_percent]
1482d# history to use       [$$date_ref]
1483x# max maintainers      [$email_git_max_maintainers]
1484t  all signature types  [$email_git_all_signature_types]
1485m  use .mailmap         [$email_use_mailmap]
1486EOT
1487	    }
1488	    print STDERR <<EOT
1489
1490Additional options:
14910  toggle all
1492tm toggle maintainers
1493tg toggle git entries
1494tl toggle open list entries
1495ts toggle subscriber list entries
1496f  emails in file       [$file_emails]
1497k  keywords in file     [$keywords]
1498r  remove duplicates    [$email_remove_duplicates]
1499p# pattern match depth  [$pattern_depth]
1500EOT
1501	}
1502	print STDERR
1503"\n#(toggle), A#(author), S#(signed) *(all), ^(none), O(options), Y(approve): ";
1504
1505	my $input = <STDIN>;
1506	chomp($input);
1507
1508	$redraw = 1;
1509	my $rerun = 0;
1510	my @wish = split(/[, ]+/, $input);
1511	foreach my $nr (@wish) {
1512	    $nr = lc($nr);
1513	    my $sel = substr($nr, 0, 1);
1514	    my $str = substr($nr, 1);
1515	    my $val = 0;
1516	    $val = $1 if $str =~ /^(\d+)$/;
1517
1518	    if ($sel eq "y") {
1519		$interactive = 0;
1520		$done = 1;
1521		$output_rolestats = 0;
1522		$output_roles = 0;
1523		last;
1524	    } elsif ($nr =~ /^\d+$/ && $nr > 0 && $nr <= $count) {
1525		$selected{$nr - 1} = !$selected{$nr - 1};
1526	    } elsif ($sel eq "*" || $sel eq '^') {
1527		my $toggle = 0;
1528		$toggle = 1 if ($sel eq '*');
1529		for (my $i = 0; $i < $count; $i++) {
1530		    $selected{$i} = $toggle;
1531		}
1532	    } elsif ($sel eq "0") {
1533		for (my $i = 0; $i < $count; $i++) {
1534		    $selected{$i} = !$selected{$i};
1535		}
1536	    } elsif ($sel eq "t") {
1537		if (lc($str) eq "m") {
1538		    for (my $i = 0; $i < $count; $i++) {
1539			$selected{$i} = !$selected{$i}
1540			    if ($list[$i]->[1] =~ /^(maintainer|supporter)/i);
1541		    }
1542		} elsif (lc($str) eq "g") {
1543		    for (my $i = 0; $i < $count; $i++) {
1544			$selected{$i} = !$selected{$i}
1545			    if ($list[$i]->[1] =~ /^(author|commit|signer)/i);
1546		    }
1547		} elsif (lc($str) eq "l") {
1548		    for (my $i = 0; $i < $count; $i++) {
1549			$selected{$i} = !$selected{$i}
1550			    if ($list[$i]->[1] =~ /^(open list)/i);
1551		    }
1552		} elsif (lc($str) eq "s") {
1553		    for (my $i = 0; $i < $count; $i++) {
1554			$selected{$i} = !$selected{$i}
1555			    if ($list[$i]->[1] =~ /^(subscriber list)/i);
1556		    }
1557		}
1558	    } elsif ($sel eq "a") {
1559		if ($val > 0 && $val <= $count) {
1560		    $authored{$val - 1} = !$authored{$val - 1};
1561		} elsif ($str eq '*' || $str eq '^') {
1562		    my $toggle = 0;
1563		    $toggle = 1 if ($str eq '*');
1564		    for (my $i = 0; $i < $count; $i++) {
1565			$authored{$i} = $toggle;
1566		    }
1567		}
1568	    } elsif ($sel eq "s") {
1569		if ($val > 0 && $val <= $count) {
1570		    $signed{$val - 1} = !$signed{$val - 1};
1571		} elsif ($str eq '*' || $str eq '^') {
1572		    my $toggle = 0;
1573		    $toggle = 1 if ($str eq '*');
1574		    for (my $i = 0; $i < $count; $i++) {
1575			$signed{$i} = $toggle;
1576		    }
1577		}
1578	    } elsif ($sel eq "o") {
1579		$print_options = 1;
1580		$redraw = 1;
1581	    } elsif ($sel eq "g") {
1582		if ($str eq "f") {
1583		    bool_invert(\$email_git_fallback);
1584		} else {
1585		    bool_invert(\$email_git);
1586		}
1587		$rerun = 1;
1588	    } elsif ($sel eq "b") {
1589		if ($str eq "s") {
1590		    bool_invert(\$email_git_blame_signatures);
1591		} else {
1592		    bool_invert(\$email_git_blame);
1593		}
1594		$rerun = 1;
1595	    } elsif ($sel eq "c") {
1596		if ($val > 0) {
1597		    $email_git_min_signatures = $val;
1598		    $rerun = 1;
1599		}
1600	    } elsif ($sel eq "x") {
1601		if ($val > 0) {
1602		    $email_git_max_maintainers = $val;
1603		    $rerun = 1;
1604		}
1605	    } elsif ($sel eq "%") {
1606		if ($str ne "" && $val >= 0) {
1607		    $email_git_min_percent = $val;
1608		    $rerun = 1;
1609		}
1610	    } elsif ($sel eq "d") {
1611		if (vcs_is_git()) {
1612		    $email_git_since = $str;
1613		} elsif (vcs_is_hg()) {
1614		    $email_hg_since = $str;
1615		}
1616		$rerun = 1;
1617	    } elsif ($sel eq "t") {
1618		bool_invert(\$email_git_all_signature_types);
1619		$rerun = 1;
1620	    } elsif ($sel eq "f") {
1621		bool_invert(\$file_emails);
1622		$rerun = 1;
1623	    } elsif ($sel eq "r") {
1624		bool_invert(\$email_remove_duplicates);
1625		$rerun = 1;
1626	    } elsif ($sel eq "m") {
1627		bool_invert(\$email_use_mailmap);
1628		read_mailmap();
1629		$rerun = 1;
1630	    } elsif ($sel eq "k") {
1631		bool_invert(\$keywords);
1632		$rerun = 1;
1633	    } elsif ($sel eq "p") {
1634		if ($str ne "" && $val >= 0) {
1635		    $pattern_depth = $val;
1636		    $rerun = 1;
1637		}
1638	    } elsif ($sel eq "h" || $sel eq "?") {
1639		print STDERR <<EOT
1640
1641Interactive mode allows you to select the various maintainers, submitters,
1642commit signers and mailing lists that could be CC'd on a patch.
1643
1644Any *'d entry is selected.
1645
1646If you have git or hg installed, you can choose to summarize the commit
1647history of files in the patch.  Also, each line of the current file can
1648be matched to its commit author and that commits signers with blame.
1649
1650Various knobs exist to control the length of time for active commit
1651tracking, the maximum number of commit authors and signers to add,
1652and such.
1653
1654Enter selections at the prompt until you are satisfied that the selected
1655maintainers are appropriate.  You may enter multiple selections separated
1656by either commas or spaces.
1657
1658EOT
1659	    } else {
1660		print STDERR "invalid option: '$nr'\n";
1661		$redraw = 0;
1662	    }
1663	}
1664	if ($rerun) {
1665	    print STDERR "git-blame can be very slow, please have patience..."
1666		if ($email_git_blame);
1667	    goto &get_maintainers;
1668	}
1669    }
1670
1671    #drop not selected entries
1672    $count = 0;
1673    my @new_emailto = ();
1674    foreach my $entry (@list) {
1675	if ($selected{$count}) {
1676	    push(@new_emailto, $list[$count]);
1677	}
1678	$count++;
1679    }
1680    return @new_emailto;
1681}
1682
1683sub bool_invert {
1684    my ($bool_ref) = @_;
1685
1686    if ($$bool_ref) {
1687	$$bool_ref = 0;
1688    } else {
1689	$$bool_ref = 1;
1690    }
1691}
1692
1693sub deduplicate_email {
1694    my ($email) = @_;
1695
1696    my $matched = 0;
1697    my ($name, $address) = parse_email($email);
1698    $email = format_email($name, $address, 1);
1699    $email = mailmap_email($email);
1700
1701    return $email if (!$email_remove_duplicates);
1702
1703    ($name, $address) = parse_email($email);
1704
1705    if ($name ne "" && $deduplicate_name_hash{lc($name)}) {
1706	$name = $deduplicate_name_hash{lc($name)}->[0];
1707	$address = $deduplicate_name_hash{lc($name)}->[1];
1708	$matched = 1;
1709    } elsif ($deduplicate_address_hash{lc($address)}) {
1710	$name = $deduplicate_address_hash{lc($address)}->[0];
1711	$address = $deduplicate_address_hash{lc($address)}->[1];
1712	$matched = 1;
1713    }
1714    if (!$matched) {
1715	$deduplicate_name_hash{lc($name)} = [ $name, $address ];
1716	$deduplicate_address_hash{lc($address)} = [ $name, $address ];
1717    }
1718    $email = format_email($name, $address, 1);
1719    $email = mailmap_email($email);
1720    return $email;
1721}
1722
1723sub save_commits_by_author {
1724    my (@lines) = @_;
1725
1726    my @authors = ();
1727    my @commits = ();
1728    my @subjects = ();
1729
1730    foreach my $line (@lines) {
1731	if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1732	    my $author = $1;
1733	    $author = deduplicate_email($author);
1734	    push(@authors, $author);
1735	}
1736	push(@commits, $1) if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
1737	push(@subjects, $1) if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
1738    }
1739
1740    for (my $i = 0; $i < @authors; $i++) {
1741	my $exists = 0;
1742	foreach my $ref(@{$commit_author_hash{$authors[$i]}}) {
1743	    if (@{$ref}[0] eq $commits[$i] &&
1744		@{$ref}[1] eq $subjects[$i]) {
1745		$exists = 1;
1746		last;
1747	    }
1748	}
1749	if (!$exists) {
1750	    push(@{$commit_author_hash{$authors[$i]}},
1751		 [ ($commits[$i], $subjects[$i]) ]);
1752	}
1753    }
1754}
1755
1756sub save_commits_by_signer {
1757    my (@lines) = @_;
1758
1759    my $commit = "";
1760    my $subject = "";
1761
1762    foreach my $line (@lines) {
1763	$commit = $1 if ($line =~ m/$VCS_cmds{"commit_pattern"}/);
1764	$subject = $1 if ($line =~ m/$VCS_cmds{"subject_pattern"}/);
1765	if ($line =~ /^[ \t]*${signature_pattern}.*\@.*$/) {
1766	    my @signatures = ($line);
1767	    my ($types_ref, $signers_ref) = extract_formatted_signatures(@signatures);
1768	    my @types = @$types_ref;
1769	    my @signers = @$signers_ref;
1770
1771	    my $type = $types[0];
1772	    my $signer = $signers[0];
1773
1774	    $signer = deduplicate_email($signer);
1775
1776	    my $exists = 0;
1777	    foreach my $ref(@{$commit_signer_hash{$signer}}) {
1778		if (@{$ref}[0] eq $commit &&
1779		    @{$ref}[1] eq $subject &&
1780		    @{$ref}[2] eq $type) {
1781		    $exists = 1;
1782		    last;
1783		}
1784	    }
1785	    if (!$exists) {
1786		push(@{$commit_signer_hash{$signer}},
1787		     [ ($commit, $subject, $type) ]);
1788	    }
1789	}
1790    }
1791}
1792
1793sub vcs_assign {
1794    my ($role, $divisor, @lines) = @_;
1795
1796    my %hash;
1797    my $count = 0;
1798
1799    return if (@lines <= 0);
1800
1801    if ($divisor <= 0) {
1802	warn("Bad divisor in " . (caller(0))[3] . ": $divisor\n");
1803	$divisor = 1;
1804    }
1805
1806    @lines = mailmap(@lines);
1807
1808    return if (@lines <= 0);
1809
1810    @lines = sort(@lines);
1811
1812    # uniq -c
1813    $hash{$_}++ for @lines;
1814
1815    # sort -rn
1816    foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
1817	my $sign_offs = $hash{$line};
1818	my $percent = $sign_offs * 100 / $divisor;
1819
1820	$percent = 100 if ($percent > 100);
1821	$count++;
1822	last if ($sign_offs < $email_git_min_signatures ||
1823		 $count > $email_git_max_maintainers ||
1824		 $percent < $email_git_min_percent);
1825	push_email_address($line, '');
1826	if ($output_rolestats) {
1827	    my $fmt_percent = sprintf("%.0f", $percent);
1828	    add_role($line, "$role:$sign_offs/$divisor=$fmt_percent%");
1829	} else {
1830	    add_role($line, $role);
1831	}
1832    }
1833}
1834
1835sub vcs_file_signoffs {
1836    my ($file) = @_;
1837
1838    my @signers = ();
1839    my $commits;
1840
1841    $vcs_used = vcs_exists();
1842    return if (!$vcs_used);
1843
1844    my $cmd = $VCS_cmds{"find_signers_cmd"};
1845    $cmd =~ s/(\$\w+)/$1/eeg;		# interpolate $cmd
1846
1847    ($commits, @signers) = vcs_find_signers($cmd);
1848
1849    foreach my $signer (@signers) {
1850	$signer = deduplicate_email($signer);
1851    }
1852
1853    vcs_assign("commit_signer", $commits, @signers);
1854}
1855
1856sub vcs_file_blame {
1857    my ($file) = @_;
1858
1859    my @signers = ();
1860    my @all_commits = ();
1861    my @commits = ();
1862    my $total_commits;
1863    my $total_lines;
1864
1865    $vcs_used = vcs_exists();
1866    return if (!$vcs_used);
1867
1868    @all_commits = vcs_blame($file);
1869    @commits = uniq(@all_commits);
1870    $total_commits = @commits;
1871    $total_lines = @all_commits;
1872
1873    if ($email_git_blame_signatures) {
1874	if (vcs_is_hg()) {
1875	    my $commit_count;
1876	    my @commit_signers = ();
1877	    my $commit = join(" -r ", @commits);
1878	    my $cmd;
1879
1880	    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
1881	    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1882
1883	    ($commit_count, @commit_signers) = vcs_find_signers($cmd);
1884
1885	    push(@signers, @commit_signers);
1886	} else {
1887	    foreach my $commit (@commits) {
1888		my $commit_count;
1889		my @commit_signers = ();
1890		my $cmd;
1891
1892		$cmd = $VCS_cmds{"find_commit_signers_cmd"};
1893		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1894
1895		($commit_count, @commit_signers) = vcs_find_signers($cmd);
1896
1897		push(@signers, @commit_signers);
1898	    }
1899	}
1900    }
1901
1902    if ($from_filename) {
1903	if ($output_rolestats) {
1904	    my @blame_signers;
1905	    if (vcs_is_hg()) {{		# Double brace for last exit
1906		my $commit_count;
1907		my @commit_signers = ();
1908		@commits = uniq(@commits);
1909		@commits = sort(@commits);
1910		my $commit = join(" -r ", @commits);
1911		my $cmd;
1912
1913		$cmd = $VCS_cmds{"find_commit_author_cmd"};
1914		$cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
1915
1916		my @lines = ();
1917
1918		@lines = &{$VCS_cmds{"execute_cmd"}}($cmd);
1919
1920		if (!$email_git_penguin_chiefs) {
1921		    @lines = grep(!/${penguin_chiefs}/i, @lines);
1922		}
1923
1924		last if !@lines;
1925
1926		my @authors = ();
1927		foreach my $line (@lines) {
1928		    if ($line =~ m/$VCS_cmds{"author_pattern"}/) {
1929			my $author = $1;
1930			$author = deduplicate_email($author);
1931			push(@authors, $author);
1932		    }
1933		}
1934
1935		save_commits_by_author(@lines) if ($interactive);
1936		save_commits_by_signer(@lines) if ($interactive);
1937
1938		push(@signers, @authors);
1939	    }}
1940	    else {
1941		foreach my $commit (@commits) {
1942		    my $i;
1943		    my $cmd = $VCS_cmds{"find_commit_author_cmd"};
1944		    $cmd =~ s/(\$\w+)/$1/eeg;	#interpolate $cmd
1945		    my @author = vcs_find_author($cmd);
1946		    next if !@author;
1947
1948		    my $formatted_author = deduplicate_email($author[0]);
1949
1950		    my $count = grep(/$commit/, @all_commits);
1951		    for ($i = 0; $i < $count ; $i++) {
1952			push(@blame_signers, $formatted_author);
1953		    }
1954		}
1955	    }
1956	    if (@blame_signers) {
1957		vcs_assign("authored lines", $total_lines, @blame_signers);
1958	    }
1959	}
1960	foreach my $signer (@signers) {
1961	    $signer = deduplicate_email($signer);
1962	}
1963	vcs_assign("commits", $total_commits, @signers);
1964    } else {
1965	foreach my $signer (@signers) {
1966	    $signer = deduplicate_email($signer);
1967	}
1968	vcs_assign("modified commits", $total_commits, @signers);
1969    }
1970}
1971
1972sub uniq {
1973    my (@parms) = @_;
1974
1975    my %saw;
1976    @parms = grep(!$saw{$_}++, @parms);
1977    return @parms;
1978}
1979
1980sub sort_and_uniq {
1981    my (@parms) = @_;
1982
1983    my %saw;
1984    @parms = sort @parms;
1985    @parms = grep(!$saw{$_}++, @parms);
1986    return @parms;
1987}
1988
1989sub clean_file_emails {
1990    my (@file_emails) = @_;
1991    my @fmt_emails = ();
1992
1993    foreach my $email (@file_emails) {
1994	$email =~ s/[\(\<\{]{0,1}([A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+)[\)\>\}]{0,1}/\<$1\>/g;
1995	my ($name, $address) = parse_email($email);
1996	if ($name eq '"[,\.]"') {
1997	    $name = "";
1998	}
1999
2000	my @nw = split(/[^A-Za-zÀ-ÿ\'\,\.\+-]/, $name);
2001	if (@nw > 2) {
2002	    my $first = $nw[@nw - 3];
2003	    my $middle = $nw[@nw - 2];
2004	    my $last = $nw[@nw - 1];
2005
2006	    if (((length($first) == 1 && $first =~ m/[A-Za-z]/) ||
2007		 (length($first) == 2 && substr($first, -1) eq ".")) ||
2008		(length($middle) == 1 ||
2009		 (length($middle) == 2 && substr($middle, -1) eq "."))) {
2010		$name = "$first $middle $last";
2011	    } else {
2012		$name = "$middle $last";
2013	    }
2014	}
2015
2016	if (substr($name, -1) =~ /[,\.]/) {
2017	    $name = substr($name, 0, length($name) - 1);
2018	} elsif (substr($name, -2) =~ /[,\.]"/) {
2019	    $name = substr($name, 0, length($name) - 2) . '"';
2020	}
2021
2022	if (substr($name, 0, 1) =~ /[,\.]/) {
2023	    $name = substr($name, 1, length($name) - 1);
2024	} elsif (substr($name, 0, 2) =~ /"[,\.]/) {
2025	    $name = '"' . substr($name, 2, length($name) - 2);
2026	}
2027
2028	my $fmt_email = format_email($name, $address, $email_usename);
2029	push(@fmt_emails, $fmt_email);
2030    }
2031    return @fmt_emails;
2032}
2033
2034sub merge_email {
2035    my @lines;
2036    my %saw;
2037
2038    for (@_) {
2039	my ($address, $role) = @$_;
2040	if (!$saw{$address}) {
2041	    if ($output_roles) {
2042		push(@lines, "$address ($role)");
2043	    } else {
2044		push(@lines, $address);
2045	    }
2046	    $saw{$address} = 1;
2047	}
2048    }
2049
2050    return @lines;
2051}
2052
2053sub output {
2054    my (@parms) = @_;
2055
2056    if ($output_multiline) {
2057	foreach my $line (@parms) {
2058	    print("${line}\n");
2059	}
2060    } else {
2061	print(join($output_separator, @parms));
2062	print("\n");
2063    }
2064}
2065
2066my $rfc822re;
2067
2068sub make_rfc822re {
2069#   Basic lexical tokens are specials, domain_literal, quoted_string, atom, and
2070#   comment.  We must allow for rfc822_lwsp (or comments) after each of these.
2071#   This regexp will only work on addresses which have had comments stripped
2072#   and replaced with rfc822_lwsp.
2073
2074    my $specials = '()<>@,;:\\\\".\\[\\]';
2075    my $controls = '\\000-\\037\\177';
2076
2077    my $dtext = "[^\\[\\]\\r\\\\]";
2078    my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*";
2079
2080    my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*";
2081
2082#   Use zero-width assertion to spot the limit of an atom.  A simple
2083#   $rfc822_lwsp* causes the regexp engine to hang occasionally.
2084    my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))";
2085    my $word = "(?:$atom|$quoted_string)";
2086    my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*";
2087
2088    my $sub_domain = "(?:$atom|$domain_literal)";
2089    my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*";
2090
2091    my $addr_spec = "$localpart\@$rfc822_lwsp*$domain";
2092
2093    my $phrase = "$word*";
2094    my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)";
2095    my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*";
2096    my $mailbox = "(?:$addr_spec|$phrase$route_addr)";
2097
2098    my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*";
2099    my $address = "(?:$mailbox|$group)";
2100
2101    return "$rfc822_lwsp*$address";
2102}
2103
2104sub rfc822_strip_comments {
2105    my $s = shift;
2106#   Recursively remove comments, and replace with a single space.  The simpler
2107#   regexps in the Email Addressing FAQ are imperfect - they will miss escaped
2108#   chars in atoms, for example.
2109
2110    while ($s =~ s/^((?:[^"\\]|\\.)*
2111                    (?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*)
2112                    \((?:[^()\\]|\\.)*\)/$1 /osx) {}
2113    return $s;
2114}
2115
2116#   valid: returns true if the parameter is an RFC822 valid address
2117#
2118sub rfc822_valid {
2119    my $s = rfc822_strip_comments(shift);
2120
2121    if (!$rfc822re) {
2122        $rfc822re = make_rfc822re();
2123    }
2124
2125    return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/;
2126}
2127
2128#   validlist: In scalar context, returns true if the parameter is an RFC822
2129#              valid list of addresses.
2130#
2131#              In list context, returns an empty list on failure (an invalid
2132#              address was found); otherwise a list whose first element is the
2133#              number of addresses found and whose remaining elements are the
2134#              addresses.  This is needed to disambiguate failure (invalid)
2135#              from success with no addresses found, because an empty string is
2136#              a valid list.
2137
2138sub rfc822_validlist {
2139    my $s = rfc822_strip_comments(shift);
2140
2141    if (!$rfc822re) {
2142        $rfc822re = make_rfc822re();
2143    }
2144    # * null list items are valid according to the RFC
2145    # * the '1' business is to aid in distinguishing failure from no results
2146
2147    my @r;
2148    if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so &&
2149	$s =~ m/^$rfc822_char*$/) {
2150        while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) {
2151            push(@r, $1);
2152        }
2153        return wantarray ? (scalar(@r), @r) : 1;
2154    }
2155    return wantarray ? () : 0;
2156}
2157