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 = '0.15';
  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 $from_filename = 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' => \$from_filename,
  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} ${V}\n");
  90     exit 0;
  91 }
  92
  93 if ($#ARGV < 0) {
  94     usage();
  95     die "$P: argument missing: patchfile or -f file please\n";
  96 }
  97
  98 my $selections = $email + $scm + $status + $subsystem + $web;
  99 if ($selections == 0) {
 100     usage();
 101     die "$P:  Missing required option: email, scm, status, subsystem or web\n";
 102 }
 103
 104 if ($email && ($email_maintainer + $email_list + $email_subscriber_list
 105                + $email_git + $email_git_penguin_chiefs) == 0) {
 106     usage();
 107     die "$P: Please select at least 1 email option\n";
 108 }
 109
 110 if (!top_of_kernel_tree($lk_path)) {
 111     die "$P: The current directory does not appear to be "
 112         . "a linux kernel source tree.\n";
 113 }
 114
 115 ## Read MAINTAINERS for type/value pairs
 116
 117 my @typevalue = ();
 118 open(MAINT, "<${lk_path}MAINTAINERS") || die "$P: Can't open MAINTAINERS\n";
 119 while (<MAINT>) {
 120     my $line = $_;
 121
 122     if ($line =~ m/^(\C):\s*(.*)/) {
 123         my $type = $1;
 124         my $value = $2;
 125
 126         ##Filename pattern matching
 127         if ($type eq "F" || $type eq "X") {
 128             $value =~ s@\.@\\\.@g;       ##Convert . to \.
 129             $value =~ s/\*/\.\*/g;       ##Convert * to .*
 130             $value =~ s/\?/\./g;         ##Convert ? to .
 131         }
 132         push(@typevalue, "$type:$value");
 133     } elsif (!/^(\s)*$/) {
 134         $line =~ s/\n$//g;
 135         push(@typevalue, $line);
 136     }
 137 }
 138 close(MAINT);
 139
 140 ## use the filenames on the command line or find the filenames in the patchfiles
 141
 142 my @files = ();
 143
 144 foreach my $file (@ARGV) {
 145     next if ((-d $file));
 146     if (!(-f $file)) {
 147         die "$P: file '${file}' not found\n";
 148     }
 149     if ($from_filename) {
 150         push(@files, $file);
 151     } else {
 152         my $file_cnt = @files;
 153         open(PATCH, "<$file") or die "$P: Can't open ${file}\n";
 154         while (<PATCH>) {
 155             if (m/^\+\+\+\s+(\S+)/) {
 156                 my $filename = $1;
 157                 $filename =~ s@^[^/]*/@@;
 158                 $filename =~ s@\n@@;
 159                 push(@files, $filename);
 160             }
 161         }
 162         close(PATCH);
 163         if ($file_cnt == @files) {
 164             die "$P: file '${file}' doesn't appear to be a patch.  "
 165                 . "Add -f to options?\n";
 166         }
 167         @files = sort_and_uniq(@files);
 168     }
 169 }
 170
 171 my @email_to = ();
 172 my @scm = ();
 173 my @web = ();
 174 my @subsystem = ();
 175 my @status = ();
 176
 177 # Find responsible parties
 178
 179 foreach my $file (@files) {
 180
 181 #Do not match excluded file patterns
 182
 183     my $exclude = 0;
 184     foreach my $line (@typevalue) {
 185         if ($line =~ m/^(\C):(.*)/) {
 186             my $type = $1;
 187             my $value = $2;
 188             if ($type eq 'X') {
 189                 if (file_match_pattern($file, $value)) {
 190                     $exclude = 1;
 191                 }
 192             }
 193         }
 194     }
 195
 196     if (!$exclude) {
 197         my $tvi = 0;
 198         foreach my $line (@typevalue) {
 199             if ($line =~ m/^(\C):(.*)/) {
 200                 my $type = $1;
 201                 my $value = $2;
 202                 if ($type eq 'F') {
 203                     if (file_match_pattern($file, $value)) {
 204                         add_categories($tvi);
 205                     }
 206                 }
 207             }
 208             $tvi++;
 209         }
 210     }
 211
 212     if ($email && $email_git) {
 213         recent_git_signoffs($file);
 214     }
 215
 216 }
 217
 218 if ($email_git_penguin_chiefs) {
 219     foreach my $chief (@penguin_chief) {
 220         if ($chief =~ m/^(.*):(.*)/) {
 221             my $chief_name = $1;
 222             my $chief_addr = $2;
 223             if ($email_usename) {
 224                 push(@email_to, format_email($chief_name, $chief_addr));
 225             } else {
 226                 push(@email_to, $chief_addr);
 227             }
 228         }
 229     }
 230 }
 231
 232 if ($email) {
 233     my $address_cnt = @email_to;
 234     if ($address_cnt == 0 && $email_list) {
 235         push(@email_to, "linux-kernel\@vger.kernel.org");
 236     }
 237
 238 #Don't sort email address list, but do remove duplicates
 239     @email_to = uniq(@email_to);
 240     output(@email_to);
 241 }
 242
 243 if ($scm) {
 244     @scm = sort_and_uniq(@scm);
 245     output(@scm);
 246 }
 247
 248 if ($status) {
 249     @status = sort_and_uniq(@status);
 250     output(@status);
 251 }
 252
 253 if ($subsystem) {
 254     @subsystem = sort_and_uniq(@subsystem);
 255     output(@subsystem);
 256 }
 257
 258 if ($web) {
 259     @web = sort_and_uniq(@web);
 260     output(@web);
 261 }
 262
 263 exit($exit);
 264
 265 sub file_match_pattern {
 266     my ($file, $pattern) = @_;
 267     if (substr($pattern, -1) eq "/") {
 268         if ($file =~ m@^$pattern@) {
 269             return 1;
 270         }
 271     } else {
 272         if ($file =~ m@^$pattern@) {
 273             my $s1 = ($file =~ tr@/@@);
 274             my $s2 = ($pattern =~ tr@/@@);
 275             if ($s1 == $s2) {
 276                 return 1;
 277             }
 278         }
 279     }
 280     return 0;
 281 }
 282
 283 sub usage {
 284     print <<EOT;
 285 usage: $P [options] patchfile
 286        $P [options] -f file
 287 version: $V
 288
 289 MAINTAINER field selection options:
 290   --email => print email address(es) if any
 291     --git => include recent git \*-by: signers
 292     --git-chief-penguins => include ${penguin_chiefs}
 293     --git-min-signatures => number of signatures required (default: 1)
 294     --git-max-maintainers => maximum maintainers to add (default: 5)
 295     --git-since => git history to use (default: 1-year-ago)
 296     --m => include maintainer(s) if any
 297     --n => include name 'Full Name <addr\@domain.tld>'
 298     --l => include list(s) if any
 299     --s => include subscriber only list(s) if any
 300   --scm => print SCM tree(s) if any
 301   --status => print status if any
 302   --subsystem => print subsystem name if any
 303   --web => print website(s) if any
 304
 305 Output type options:
 306   --separator [, ] => separator for multiple entries on 1 line
 307   --multiline => print 1 entry per line
 308
 309 Default options:
 310   [--email --git --m --l --multiline]
 311
 312 Other options:
 313   --version -> show version
 314   --help => show this help information
 315
 316 EOT
 317 }
 318
 319 sub top_of_kernel_tree {
 320         my ($lk_path) = @_;
 321
 322         if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") {
 323             $lk_path .= "/";
 324         }
 325         if (   (-f "${lk_path}COPYING")
 326             && (-f "${lk_path}CREDITS")
 327             && (-f "${lk_path}Kbuild")
 328             && (-f "${lk_path}MAINTAINERS")
 329             && (-f "${lk_path}Makefile")
 330             && (-f "${lk_path}README")
 331             && (-d "${lk_path}Documentation")
 332             && (-d "${lk_path}arch")
 333             && (-d "${lk_path}include")
 334             && (-d "${lk_path}drivers")
 335             && (-d "${lk_path}fs")
 336             && (-d "${lk_path}init")
 337             && (-d "${lk_path}ipc")
 338             && (-d "${lk_path}kernel")
 339             && (-d "${lk_path}lib")
 340             && (-d "${lk_path}scripts")) {
 341                 return 1;
 342         }
 343         return 0;
 344 }
 345
 346 sub format_email {
 347     my ($name, $email) = @_;
 348
 349     $name =~ s/^\s+|\s+$//g;
 350     $email =~ s/^\s+|\s+$//g;
 351
 352     my $formatted_email = "";
 353
 354     if ($name =~ /[^a-z0-9 \.\-]/i) {    ##has "must quote" chars
 355         $name =~ s/(?<!\\)"/\\"/g;       ##escape quotes
 356         $formatted_email = "\"${name}\"\ \<${email}\>";
 357     } else {
 358         $formatted_email = "${name} \<${email}\>";
 359     }
 360     return $formatted_email;
 361 }
 362
 363 sub add_categories {
 364     my ($index) = @_;
 365
 366     $index = $index - 1;
 367     while ($index >= 0) {
 368         my $tv = $typevalue[$index];
 369         if ($tv =~ m/^(\C):(.*)/) {
 370             my $ptype = $1;
 371             my $pvalue = $2;
 372             if ($ptype eq "L") {
 373                 my $subscr = $pvalue;
 374                 if ($subscr =~ m/\s*\(subscribers-only\)/) {
 375                     if ($email_subscriber_list) {
 376                         $subscr =~ s/\s*\(subscribers-only\)//g;
 377                         push(@email_to, $subscr);
 378                     }
 379                 } else {
 380                     if ($email_list) {
 381                         push(@email_to, $pvalue);
 382                     }
 383                 }
 384             } elsif ($ptype eq "M") {
 385                 if ($email_maintainer) {
 386                     if ($index >= 0) {
 387                         my $tv = $typevalue[$index - 1];
 388                         if ($tv =~ m/^(\C):(.*)/) {
 389                             if ($1 eq "P" && $email_usename) {
 390                                 push(@email_to, format_email($2, $pvalue));
 391                             } else {
 392                                 push(@email_to, $pvalue);
 393                             }
 394                         }
 395                     } else {
 396                         push(@email_to, $pvalue);
 397                     }
 398                 }
 399             } elsif ($ptype eq "T") {
 400                 push(@scm, $pvalue);
 401             } elsif ($ptype eq "W") {
 402                 push(@web, $pvalue);
 403             } elsif ($ptype eq "S") {
 404                 push(@status, $pvalue);
 405             }
 406
 407             $index--;
 408         } else {
 409             push(@subsystem,$tv);
 410             $index = -1;
 411         }
 412     }
 413 }
 414
 415 sub which {
 416     my ($bin) = @_;
 417
 418     foreach my $path (split /:/, $ENV{PATH}) {
 419         if (-e "$path/$bin") {
 420             return "$path/$bin";
 421         }
 422     }
 423
 424     return "";
 425 }
 426
 427 sub recent_git_signoffs {
 428     my ($file) = @_;
 429
 430     my $sign_offs = "";
 431     my $cmd = "";
 432     my $output = "";
 433     my $count = 0;
 434     my @lines = ();
 435
 436     if (which("git") eq "") {
 437         die("$P: git not found.  Add --nogit to options?\n");
 438     }
 439
 440     $cmd = "git log --since=${email_git_since} -- ${file}";
 441     $cmd .= " | grep -Pi \"^[-_         a-z]+by:.*\\\@\"";
 442     if (!$email_git_penguin_chiefs) {
 443         $cmd .= " | grep -Pv \"${penguin_chiefs}\"";
 444     }
 445     $cmd .= " | cut -f2- -d\":\"";
 446     $cmd .= " | sed -e \"s/^\\s+//g\"";
 447     $cmd .= " | sort | uniq -c | sort -rn";
 448
 449     $output = `${cmd}`;
 450     $output =~ s/^\s*//gm;
 451
 452     @lines = split("\n", $output);
 453     foreach my $line (@lines) {
 454         if ($line =~ m/([0-9]+)\s+(.*)/) {
 455             my $sign_offs = $1;
 456             $line = $2;
 457             $count++;
 458             if ($sign_offs < $email_git_min_signatures ||
 459                 $count > $email_git_max_maintainers) {
 460                 last;
 461             }
 462         } else {
 463             die("$P: Unexpected git output: ${line}\n");
 464         }
 465         if ($line =~ m/(.+)<(.+)>/) {
 466             my $git_name = $1;
 467             my $git_addr = $2;
 468             $git_name =~ tr/^\"//;
 469             $git_name =~ tr/^\\s*//;
 470             $git_name =~ tr/\"$//;
 471             $git_name =~ tr/\\s*$//;
 472             if ($email_usename) {
 473                 push(@email_to, format_email($git_name, $git_addr));
 474             } else {
 475                 push(@email_to, $git_addr);
 476             }
 477         } elsif ($line =~ m/<(.+)>/) {
 478             my $git_addr = $1;
 479             push(@email_to, $git_addr);
 480         } else {
 481             push(@email_to, $line);
 482         }
 483     }
 484     return $output;
 485 }
 486
 487 sub uniq {
 488     my @parms = @_;
 489
 490     my %saw;
 491     @parms = grep(!$saw{$_}++, @parms);
 492     return @parms;
 493 }
 494
 495 sub sort_and_uniq {
 496     my @parms = @_;
 497
 498     my %saw;
 499     @parms = sort @parms;
 500     @parms = grep(!$saw{$_}++, @parms);
 501     return @parms;
 502 }
 503
 504 sub output {
 505     my @parms = @_;
 506
 507     if ($output_multiline) {
 508         foreach my $line (@parms) {
 509             print("${line}\n");
 510         }
 511     } else {
 512         print(join($output_separator, @parms));
 513         print("\n");
 514     }
 515 }