scripts/get_maintainer.pl

   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_maintainers.pl [OPTIONS] <patch>
   9 #        perl scripts/get_maintainers.pl [OPTIONS] -f <file>
  10 #
  11 # Licensed under the terms of the GNU GPL License version 2
  12
  13 use strict;
  14
  15 my $P = $0;
  16 my $V = '0.14';
  17
  18 use Getopt::Long qw(:config no_auto_abbrev);
  19
  20 my $lk_path = "./";
  21 my $email = 1;
  22 my $email_usename = 1;
  23 my $email_maintainer = 1;
  24 my $email_list = 1;
  25 my $email_subscriber_list = 0;
  26 my $email_git = 1;
  27 my $email_git_penguin_chiefs = 0;
  28 my $email_git_min_signatures = 1;
  29 my $email_git_max_maintainers = 5;
  30 my $email_git_since = "1-year-ago";
  31 my $output_multiline = 1;
  32 my $output_separator = ", ";
  33 my $scm = 0;
  34 my $web = 0;
  35 my $subsystem = 0;
  36 my $status = 0;
  37 my $onefile = 0;
  38 my $version = 0;
  39 my $help = 0;
  40
  41 my $exit = 0;
  42
  43 my @penguin_chief = ();
  44 push(@penguin_chief,"Linus Torvalds:torvalds\@linux-foundation.org");
  45 #Andrew wants in on most everything - 2009/01/14
  46 #push(@penguin_chief,"Andrew Morton:akpm\@linux-foundation.org");
  47
  48 my @penguin_chief_names = ();
  49 foreach my $chief (@penguin_chief) {
  50     if ($chief =~ m/^(.*):(.*)/) {
  51         my $chief_name = $1;
  52         my $chief_addr = $2;
  53         push(@penguin_chief_names, $chief_name);
  54     }
  55 }
  56 my $penguin_chiefs = "\(" . join("|",@penguin_chief_names) . "\)";
  57
  58 if (!GetOptions(
  59                 'email!' => \$email,
  60                 'git!' => \$email_git,
  61                 'git-chief-penguins!' => \$email_git_penguin_chiefs,
  62                 'git-min-signatures=i' => \$email_git_min_signatures,
  63                 'git-max-maintainers=i' => \$email_git_max_maintainers,
  64                 'git-since=s' => \$email_git_since,
  65                 'm!' => \$email_maintainer,
  66                 'n!' => \$email_usename,
  67                 'l!' => \$email_list,
  68                 's!' => \$email_subscriber_list,
  69                 'multiline!' => \$output_multiline,
  70                 'separator=s' => \$output_separator,
  71                 'subsystem!' => \$subsystem,
  72                 'status!' => \$status,
  73                 'scm!' => \$scm,
  74                 'web!' => \$web,
  75                 'f|file' => \$onefile,
  76                 'v|version' => \$version,
  77                 'h|help' => \$help,
  78                 )) {
  79     usage();
  80     die "$P: invalid argument\n";
  81 }
  82
  83 if ($help != 0) {
  84     usage();
  85     exit 0;
  86 }
  87
  88 if ($version != 0) {
  89     print("${P} ${V}\n");
  90     exit 0;
  91 }
  92
  93 my $infile = $ARGV[0];
  94
  95 if ($#ARGV < 0) {
  96     usage();
  97     die "$P: argument missing: patchfile or -f file please\n";
  98 }
  99
 100 my $selections = $email + $scm + $status + $subsystem + $web;
 101 if ($selections == 0) {
 102     usage();
 103     die "$P:  Missing required option: email, scm, status, subsystem or web\n";
 104 }
 105
 106 if ($email && ($email_maintainer + $email_list + $email_subscriber_list
 107                + $email_git + $email_git_penguin_chiefs) == 0) {
 108     usage();
 109     die "$P: Please select at least 1 email option\n";
 110 }
 111
 112 if (!top_of_kernel_tree($lk_path)) {
 113     die "$P: The current directory does not appear to be "
 114         . "a linux kernel source tree.\n";
 115 }
 116
 117 ## Read MAINTAINERS for type/value pairs
 118
 119 my @typevalue = ();
 120 open(MAINT, "<${lk_path}MAINTAINERS") || die "$P: Can't open MAINTAINERS\n";
 121 while (<MAINT>) {
 122     my $line = $_;
 123
 124     if ($line =~ m/^(\C):\s*(.*)/) {
 125         my $type = $1;
 126         my $value = $2;
 127
 128         ##Filename pattern matching
 129         if ($type eq "F" || $type eq "X") {
 130             $value =~ s@\.@\\\.@g;       ##Convert . to \.
 131             $value =~ s/\*/\.\*/g;       ##Convert * to .*
 132             $value =~ s/\?/\./g;         ##Convert ? to .
 133         }
 134         push(@typevalue, "$type:$value");
 135     } elsif (!/^(\s)*$/) {
 136         $line =~ s/\n$//g;
 137         push(@typevalue, $line);
 138     }
 139 }
 140 close(MAINT);
 141
 142 ## use the filename on the command line or find the filenames in the patchfile
 143
 144 my @files = ();
 145
 146 if ($onefile) {
 147     if (!(-f $infile)) {
 148         die "$P: file '${infile}' not found\n";
 149     }
 150     push(@files, $infile);
 151 } else {
 152     open(PATCH, "<$infile") or die "$P: Can't open ${infile}\n";
 153     while (<PATCH>) {
 154         if (m/^\+\+\+\s+(\S+)/) {
 155             my $file = $1;
 156             $file =~ s@^[^/]*/@@;
 157             $file =~ s@\n@@;
 158             push(@files, $file);
 159         }
 160     }
 161     close(PATCH);
 162     my $file_cnt = @files;
 163     if ($file_cnt == 0) {
 164         print STDERR "$P: file '${infile}' doesn't appear to be a patch.  "
 165             . "Add -f to options?\n";
 166     }
 167     @files = sort_and_uniq(@files);
 168 }
 169
 170 my @email_to = ();
 171 my @scm = ();
 172 my @web = ();
 173 my @subsystem = ();
 174 my @status = ();
 175
 176 # Find responsible parties
 177
 178 foreach my $file (@files) {
 179
 180 #Do not match excluded file patterns
 181
 182     my $exclude = 0;
 183     foreach my $line (@typevalue) {
 184         if ($line =~ m/^(\C):(.*)/) {
 185             my $type = $1;
 186             my $value = $2;
 187             if ($type eq 'X') {
 188                 if (file_match_pattern($file, $value)) {
 189                     $exclude = 1;
 190                 }
 191             }
 192         }
 193     }
 194
 195     if (!$exclude) {
 196         my $tvi = 0;
 197         foreach my $line (@typevalue) {
 198             if ($line =~ m/^(\C):(.*)/) {
 199                 my $type = $1;
 200                 my $value = $2;
 201                 if ($type eq 'F') {
 202                     if (file_match_pattern($file, $value)) {
 203                         add_categories($tvi);
 204                     }
 205                 }
 206             }
 207             $tvi++;
 208         }
 209     }
 210
 211     if ($email_git) {
 212         recent_git_signoffs($file);
 213     }
 214
 215 }
 216
 217 if ($email_git_penguin_chiefs) {
 218     foreach my $chief (@penguin_chief) {
 219         if ($chief =~ m/^(.*):(.*)/) {
 220             my $chief_name = $1;
 221             my $chief_addr = $2;
 222             if ($email_usename) {
 223                 push(@email_to, format_email($chief_name, $chief_addr));
 224             } else {
 225                 push(@email_to, $chief_addr);
 226             }
 227         }
 228     }
 229 }
 230
 231 if ($email) {
 232     my $address_cnt = @email_to;
 233     if ($address_cnt == 0 && $email_list) {
 234         push(@email_to, "linux-kernel\@vger.kernel.org");
 235     }
 236
 237 #Don't sort email address list, but do remove duplicates
 238     @email_to = uniq(@email_to);
 239     output(@email_to);
 240 }
 241
 242 if ($scm) {
 243     if (!$onefile) {
 244         @scm = sort_and_uniq(@scm);
 245     }
 246     output(@scm);
 247 }
 248
 249 if ($status) {
 250     if (!$onefile) {
 251         @status = sort_and_uniq(@status);
 252     }
 253     output(@status);
 254 }
 255
 256 if ($subsystem) {
 257     if (!$onefile) {
 258         @subsystem = sort_and_uniq(@subsystem);
 259     }
 260     output(@subsystem);
 261 }
 262
 263 if ($web) {
 264     if (!$onefile) {
 265         @web = sort_and_uniq(@web);
 266     }
 267     output(@web);
 268 }
 269
 270 exit($exit);
 271
 272 sub file_match_pattern {
 273     my ($file, $pattern) = @_;
 274     if (substr($pattern, -1) eq "/") {
 275         if ($file =~ m@^$pattern@) {
 276             return 1;
 277         }
 278     } else {
 279         if ($file =~ m@^$pattern@) {
 280             my $s1 = ($file =~ tr@/@@);
 281             my $s2 = ($pattern =~ tr@/@@);
 282             if ($s1 == $s2) {
 283                 return 1;
 284             }
 285         }
 286     }
 287     return 0;
 288 }
 289
 290 sub usage {
 291     print <<EOT;
 292 usage: $P [options] patchfile
 293        $P [options] -f file
 294 version: $V
 295
 296 MAINTAINER field selection options:
 297   --email => print email address(es) if any
 298     --git => include recent git \*-by: signers
 299     --git-chief-penguins => include ${penguin_chiefs}
 300     --git-min-signatures => number of signatures required (default: 1)
 301     --git-max-maintainers => maximum maintainers to add (default: 5)
 302     --git-since => git history to use (default: 1-year-ago)
 303     --m => include maintainer(s) if any
 304     --n => include name 'Full Name <addr\@domain.tld>'
 305     --l => include list(s) if any
 306     --s => include subscriber only list(s) if any
 307   --scm => print SCM tree(s) if any
 308   --status => print status if any
 309   --subsystem => print subsystem name if any
 310   --web => print website(s) if any
 311
 312 Output type options:
 313   --separator [, ] => separator for multiple entries on 1 line
 314   --multiline => print 1 entry per line
 315
 316 Default options:
 317   [--email --git --m --l --multiline]
 318
 319 Other options:
 320   --version -> show version
 321   --help => show this help information
 322
 323 EOT
 324 }
 325
 326 sub top_of_kernel_tree {
 327         my ($lk_path) = @_;
 328
 329         if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
 330             $lk_path .= "/";
 331         }
 332         if (   (-f "${lk_path}COPYING")
 333             && (-f "${lk_path}CREDITS")
 334             && (-f "${lk_path}Kbuild")
 335             && (-f "${lk_path}MAINTAINERS")
 336             && (-f "${lk_path}Makefile")
 337             && (-f "${lk_path}README")
 338             && (-d "${lk_path}Documentation")
 339             && (-d "${lk_path}arch")
 340             && (-d "${lk_path}include")
 341             && (-d "${lk_path}drivers")
 342             && (-d "${lk_path}fs")
 343             && (-d "${lk_path}init")
 344             && (-d "${lk_path}ipc")
 345             && (-d "${lk_path}kernel")
 346             && (-d "${lk_path}lib")
 347             && (-d "${lk_path}scripts")) {
 348                 return 1;
 349         }
 350         return 0;
 351 }
 352
 353 sub format_email {
 354     my ($name, $email) = @_;
 355
 356     $name =~ s/^\s+|\s+$//g;
 357     $email =~ s/^\s+|\s+$//g;
 358
 359     my $formatted_email = "";
 360
 361     if ($name =~ /[^a-z0-9 \.\-]/i) {    ##has "must quote" chars
 362         $name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
 363         $formatted_email = "\"${name}\"\ \<${email}\>";
 364     } else {
 365         $formatted_email = "${name} \<${email}\>";
 366     }
 367     return $formatted_email;
 368 }
 369
 370 sub add_categories {
 371     my ($index) = @_;
 372
 373     $index = $index - 1;
 374     while ($index >= 0) {
 375         my $tv = $typevalue[$index];
 376         if ($tv =~ m/^(\C):(.*)/) {
 377             my $ptype = $1;
 378             my $pvalue = $2;
 379             if ($ptype eq "L") {
 380                 my $subscr = $pvalue;
 381                 if ($subscr =~ m/\s*\(subscribers-only\)/) {
 382                     if ($email_subscriber_list) {
 383                         $subscr =~ s/\s*\(subscribers-only\)//g;
 384                         push(@email_to, $subscr);
 385                     }
 386                 } else {
 387                     if ($email_list) {
 388                         push(@email_to, $pvalue);
 389                     }
 390                 }
 391             } elsif ($ptype eq "M") {
 392                 if ($email_maintainer) {
 393                     if ($index >= 0) {
 394                         my $tv = $typevalue[$index - 1];
 395                         if ($tv =~ m/^(\C):(.*)/) {
 396                             if ($1 eq "P" && $email_usename) {
 397                                 push(@email_to, format_email($2, $pvalue));
 398                             } else {
 399                                 push(@email_to, $pvalue);
 400                             }
 401                         }
 402                     } else {
 403                         push(@email_to, $pvalue);
 404                     }
 405                 }
 406             } elsif ($ptype eq "T") {
 407                 push(@scm, $pvalue);
 408             } elsif ($ptype eq "W") {
 409                 push(@web, $pvalue);
 410             } elsif ($ptype eq "S") {
 411                 push(@status, $pvalue);
 412             }
 413
 414             $index--;
 415         } else {
 416             push(@subsystem,$tv);
 417             $index = -1;
 418         }
 419     }
 420 }
 421
 422 sub which {
 423     my ($bin) = @_;
 424
 425     foreach my $path (split /:/, $ENV{PATH}) {
 426         if (-e "$path/$bin") {
 427             return "$path/$bin";
 428         }
 429     }
 430
 431     return "";
 432 }
 433
 434 sub recent_git_signoffs {
 435     my ($file) = @_;
 436
 437     my $sign_offs = "";
 438     my $cmd = "";
 439     my $output = "";
 440     my $count = 0;
 441     my @lines = ();
 442
 443     if (which("git") eq "") {
 444         die("$P: git not found.  Add --nogit to options?\n");
 445     }
 446
 447     $cmd = "git log --since=${email_git_since} -- ${file}";
 448     $cmd .= " | grep -P '^    [-A-Za-z]+by:.*\\\@'";
 449     if (!$email_git_penguin_chiefs) {
 450         $cmd .= " | grep -E -v \"${penguin_chiefs}\"";
 451     }
 452     $cmd .= " | sort | uniq -c | sort -rn";
 453
 454     $output = `${cmd}`;
 455     $output =~ s/^\s*//gm;
 456
 457     @lines = split("\n", $output);
 458     foreach my $line (@lines) {
 459         if ($line =~ m/([0-9]+)\s+([-A-Za-z]+by:)\s+(.*)/) {
 460             my $sign_offs = $1;
 461             $line = $3;
 462             $count++;
 463             if ($sign_offs < $email_git_min_signatures ||
 464                 $count > $email_git_max_maintainers) {
 465                 last;
 466             }
 467         } else {
 468             die("$P: Unexpected git output: ${line}\n");
 469         }
 470         if ($line =~ m/(.*) <(.*)>/) {
 471             my $git_name = $1;
 472             my $git_addr = $2;
 473             $git_name =~ tr/^\"//;
 474             $git_name =~ tr/\"$//;
 475             if ($email_usename) {
 476                 push(@email_to, format_email($git_name, $git_addr));
 477             } else {
 478                 push(@email_to, $git_addr);
 479             }
 480         } elsif ($line =~ m/<(.*)>/) {
 481             my $git_addr = $1;
 482             push(@email_to, $git_addr);
 483         } else {
 484             push(@email_to, $line);
 485         }
 486     }
 487     return $output;
 488 }
 489
 490 sub uniq {
 491     my @parms = @_;
 492
 493     my %saw;
 494     @parms = grep(!$saw{$_}++, @parms);
 495     return @parms;
 496 }
 497
 498 sub sort_and_uniq {
 499     my @parms = @_;
 500
 501     my %saw;
 502     @parms = sort @parms;
 503     @parms = grep(!$saw{$_}++, @parms);
 504     return @parms;
 505 }
 506
 507 sub output {
 508     my @parms = @_;
 509
 510     if ($output_multiline) {
 511         foreach my $line (@parms) {
 512             print("${line}\n");
 513         }
 514     } else {
 515         print(join($output_separator, @parms));
 516         print("\n");
 517     }
 518 }