perl/Git/SVN/Log.pm

   1 package Git::SVN::Log;
   2 use strict;
   3 use warnings;
   4 use Git::SVN::Utils qw(fatal);
   5 use Git qw(command command_oneline command_output_pipe command_close_pipe);
   6 use POSIX qw/strftime/;
   7 use constant commit_log_separator => ('-' x 72) . "\n";
   8 use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
   9             %rusers $show_commit $incremental/;
  10
  11 # Option set in git-svn
  12 our $_git_format;
  13
  14 sub cmt_showable {
  15         my ($c) = @_;
  16         return 1 if defined $c->{r};
  17
  18         # big commit message got truncated by the 16k pretty buffer in rev-list
  19         if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
  20                                 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
  21                 @{$c->{l}} = ();
  22                 my @log = command(qw/cat-file commit/, $c->{c});
  23
  24                 # shift off the headers
  25                 shift @log while ($log[0] ne '');
  26                 shift @log;
  27
  28                 # TODO: make $c->{l} not have a trailing newline in the future
  29                 @{$c->{l}} = map { "$_\n" } grep !/^git-svn-id: /, @log;
  30
  31                 (undef, $c->{r}, undef) = ::extract_metadata(
  32                                 (grep(/^git-svn-id: /, @log))[-1]);
  33         }
  34         return defined $c->{r};
  35 }
  36
  37 sub log_use_color {
  38         return $color || Git->repository->get_colorbool('color.diff');
  39 }
  40
  41 sub git_svn_log_cmd {
  42         my ($r_min, $r_max, @args) = @_;
  43         my $head = 'HEAD';
  44         my (@files, @log_opts);
  45         foreach my $x (@args) {
  46                 if ($x eq '--' || @files) {
  47                         push @files, $x;
  48                 } else {
  49                         if (::verify_ref("$x^0")) {
  50                                 $head = $x;
  51                         } else {
  52                                 push @log_opts, $x;
  53                         }
  54                 }
  55         }
  56
  57         my ($url, $rev, $uuid, $gs) = ::working_head_info($head);
  58
  59         require Git::SVN;
  60         $gs ||= Git::SVN->_new;
  61         my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
  62                    $gs->refname);
  63         push @cmd, '-r' unless $non_recursive;
  64         push @cmd, qw/--raw --name-status/ if $verbose;
  65         push @cmd, '--color' if log_use_color();
  66         push @cmd, @log_opts;
  67         if (defined $r_max && $r_max == $r_min) {
  68                 push @cmd, '--max-count=1';
  69                 if (my $c = $gs->rev_map_get($r_max)) {
  70                         push @cmd, $c;
  71                 }
  72         } elsif (defined $r_max) {
  73                 if ($r_max < $r_min) {
  74                         ($r_min, $r_max) = ($r_max, $r_min);
  75                 }
  76                 my (undef, $c_max) = $gs->find_rev_before($r_max, 1, $r_min);
  77                 my (undef, $c_min) = $gs->find_rev_after($r_min, 1, $r_max);
  78                 # If there are no commits in the range, both $c_max and $c_min
  79                 # will be undefined.  If there is at least 1 commit in the
  80                 # range, both will be defined.
  81                 return () if !defined $c_min || !defined $c_max;
  82                 if ($c_min eq $c_max) {
  83                         push @cmd, '--max-count=1', $c_min;
  84                 } else {
  85                         push @cmd, '--boundary', "$c_min..$c_max";
  86                 }
  87         }
  88         return (@cmd, @files);
  89 }
  90
  91 # adapted from pager.c
  92 sub config_pager {
  93         if (! -t *STDOUT) {
  94                 $ENV{GIT_PAGER_IN_USE} = 'false';
  95                 $pager = undef;
  96                 return;
  97         }
  98         chomp($pager = command_oneline(qw(var GIT_PAGER)));
  99         if ($pager eq 'cat') {
 100                 $pager = undef;
 101         }
 102         $ENV{GIT_PAGER_IN_USE} = defined($pager);
 103 }
 104
 105 sub run_pager {
 106         return unless defined $pager;
 107         pipe my ($rfd, $wfd) or return;
 108         defined(my $pid = fork) or fatal "Can't fork: $!";
 109         if (!$pid) {
 110                 open STDOUT, '>&', $wfd or
 111                                      fatal "Can't redirect to stdout: $!";
 112                 return;
 113         }
 114         open STDIN, '<&', $rfd or fatal "Can't redirect stdin: $!";
 115         $ENV{LESS} ||= 'FRSX';
 116         exec $pager or fatal "Can't run pager: $! ($pager)";
 117 }
 118
 119 sub format_svn_date {
 120         my $t = shift || time;
 121         require Git::SVN;
 122         my $gmoff = Git::SVN::get_tz($t);
 123         return strftime("%Y-%m-%d %H:%M:%S $gmoff (%a, %d %b %Y)", localtime($t));
 124 }
 125
 126 sub parse_git_date {
 127         my ($t, $tz) = @_;
 128         # Date::Parse isn't in the standard Perl distro :(
 129         if ($tz =~ s/^\+//) {
 130                 $t += tz_to_s_offset($tz);
 131         } elsif ($tz =~ s/^\-//) {
 132                 $t -= tz_to_s_offset($tz);
 133         }
 134         return $t;
 135 }
 136
 137 sub set_local_timezone {
 138         if (defined $TZ) {
 139                 $ENV{TZ} = $TZ;
 140         } else {
 141                 delete $ENV{TZ};
 142         }
 143 }
 144
 145 sub tz_to_s_offset {
 146         my ($tz) = @_;
 147         $tz =~ s/(\d\d)$//;
 148         return ($1 * 60) + ($tz * 3600);
 149 }
 150
 151 sub get_author_info {
 152         my ($dest, $author, $t, $tz) = @_;
 153         $author =~ s/(?:^\s*|\s*$)//g;
 154         $dest->{a_raw} = $author;
 155         my $au;
 156         if ($::_authors) {
 157                 $au = $rusers{$author} || undef;
 158         }
 159         if (!$au) {
 160                 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
 161         }
 162         $dest->{t} = $t;
 163         $dest->{tz} = $tz;
 164         $dest->{a} = $au;
 165         $dest->{t_utc} = parse_git_date($t, $tz);
 166 }
 167
 168 sub process_commit {
 169         my ($c, $r_min, $r_max, $defer) = @_;
 170         if (defined $r_min && defined $r_max) {
 171                 if ($r_min == $c->{r} && $r_min == $r_max) {
 172                         show_commit($c);
 173                         return 0;
 174                 }
 175                 return 1 if $r_min == $r_max;
 176                 if ($r_min < $r_max) {
 177                         # we need to reverse the print order
 178                         return 0 if (defined $limit && --$limit < 0);
 179                         push @$defer, $c;
 180                         return 1;
 181                 }
 182                 if ($r_min != $r_max) {
 183                         return 1 if ($r_min < $c->{r});
 184                         return 1 if ($r_max > $c->{r});
 185                 }
 186         }
 187         return 0 if (defined $limit && --$limit < 0);
 188         show_commit($c);
 189         return 1;
 190 }
 191
 192 my $l_fmt;
 193 sub show_commit {
 194         my $c = shift;
 195         if ($oneline) {
 196                 my $x = "\n";
 197                 if (my $l = $c->{l}) {
 198                         while ($l->[0] =~ /^\s*$/) { shift @$l }
 199                         $x = $l->[0];
 200                 }
 201                 $l_fmt ||= 'A' . length($c->{r});
 202                 print 'r',pack($l_fmt, $c->{r}),' | ';
 203                 print "$c->{c} | " if $show_commit;
 204                 print $x;
 205         } else {
 206                 show_commit_normal($c);
 207         }
 208 }
 209
 210 sub show_commit_changed_paths {
 211         my ($c) = @_;
 212         return unless $c->{changed};
 213         print "Changed paths:\n", @{$c->{changed}};
 214 }
 215
 216 sub show_commit_normal {
 217         my ($c) = @_;
 218         print commit_log_separator, "r$c->{r} | ";
 219         print "$c->{c} | " if $show_commit;
 220         print "$c->{a} | ", format_svn_date($c->{t_utc}), ' | ';
 221         my $nr_line = 0;
 222
 223         if (my $l = $c->{l}) {
 224                 while ($l->[$#$l] eq "\n" && $#$l > 0
 225                                           && $l->[($#$l - 1)] eq "\n") {
 226                         pop @$l;
 227                 }
 228                 $nr_line = scalar @$l;
 229                 if (!$nr_line) {
 230                         print "1 line\n\n\n";
 231                 } else {
 232                         if ($nr_line == 1) {
 233                                 $nr_line = '1 line';
 234                         } else {
 235                                 $nr_line .= ' lines';
 236                         }
 237                         print $nr_line, "\n";
 238                         show_commit_changed_paths($c);
 239                         print "\n";
 240                         print $_ foreach @$l;
 241                 }
 242         } else {
 243                 print "1 line\n";
 244                 show_commit_changed_paths($c);
 245                 print "\n";
 246
 247         }
 248         foreach my $x (qw/raw stat diff/) {
 249                 if ($c->{$x}) {
 250                         print "\n";
 251                         print $_ foreach @{$c->{$x}}
 252                 }
 253         }
 254 }
 255
 256 sub cmd_show_log {
 257         my (@args) = @_;
 258         my ($r_min, $r_max);
 259         my $r_last = -1; # prevent dupes
 260         set_local_timezone();
 261         if (defined $::_revision) {
 262                 if ($::_revision =~ /^(\d+):(\d+)$/) {
 263                         ($r_min, $r_max) = ($1, $2);
 264                 } elsif ($::_revision =~ /^\d+$/) {
 265                         $r_min = $r_max = $::_revision;
 266                 } else {
 267                         fatal "-r$::_revision is not supported, use ",
 268                                 "standard 'git log' arguments instead";
 269                 }
 270         }
 271
 272         config_pager();
 273         @args = git_svn_log_cmd($r_min, $r_max, @args);
 274         if (!@args) {
 275                 print commit_log_separator unless $incremental || $oneline;
 276                 return;
 277         }
 278         my $log = command_output_pipe(@args);
 279         run_pager();
 280         my (@k, $c, $d, $stat);
 281         my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
 282         while (<$log>) {
 283                 if (/^${esc_color}commit (?:- )?($::sha1_short)/o) {
 284                         my $cmt = $1;
 285                         if ($c && cmt_showable($c) && $c->{r} != $r_last) {
 286                                 $r_last = $c->{r};
 287                                 process_commit($c, $r_min, $r_max, \@k) or
 288                                                                 goto out;
 289                         }
 290                         $d = undef;
 291                         $c = { c => $cmt };
 292                 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
 293                         get_author_info($c, $1, $2, $3);
 294                 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
 295                         # ignore
 296                 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
 297                         push @{$c->{raw}}, $_;
 298                 } elsif (/^${esc_color}[ACRMDT]\t/) {
 299                         # we could add $SVN->{svn_path} here, but that requires
 300                         # remote access at the moment (repo_path_split)...
 301                         s#^(${esc_color})([ACRMDT])\t#$1   $2 #o;
 302                         push @{$c->{changed}}, $_;
 303                 } elsif (/^${esc_color}diff /o) {
 304                         $d = 1;
 305                         push @{$c->{diff}}, $_;
 306                 } elsif ($d) {
 307                         push @{$c->{diff}}, $_;
 308                 } elsif (/^\ .+\ \|\s*\d+\ $esc_color[\+\-]*
 309                           $esc_color*[\+\-]*$esc_color$/x) {
 310                         $stat = 1;
 311                         push @{$c->{stat}}, $_;
 312                 } elsif ($stat && /^ \d+ files changed, \d+ insertions/) {
 313                         push @{$c->{stat}}, $_;
 314                         $stat = undef;
 315                 } elsif (/^${esc_color}    (git-svn-id:.+)$/o) {
 316                         ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
 317                 } elsif (s/^${esc_color}    //o) {
 318                         push @{$c->{l}}, $_;
 319                 }
 320         }
 321         if ($c && defined $c->{r} && $c->{r} != $r_last) {
 322                 $r_last = $c->{r};
 323                 process_commit($c, $r_min, $r_max, \@k);
 324         }
 325         if (@k) {
 326                 ($r_min, $r_max) = ($r_max, $r_min);
 327                 process_commit($_, $r_min, $r_max) foreach reverse @k;
 328         }
 329 out:
 330         close $log;
 331         print commit_log_separator unless $incremental || $oneline;
 332 }
 333
 334 sub cmd_blame {
 335         my $path = pop;
 336
 337         config_pager();
 338         run_pager();
 339
 340         my ($fh, $ctx, $rev);
 341
 342         if ($_git_format) {
 343                 ($fh, $ctx) = command_output_pipe('blame', @_, $path);
 344                 while (my $line = <$fh>) {
 345                         if ($line =~ /^\^?([[:xdigit:]]+)\s/) {
 346                                 # Uncommitted edits show up as a rev ID of
 347                                 # all zeros, which we can't look up with
 348                                 # cmt_metadata
 349                                 if ($1 !~ /^0+$/) {
 350                                         (undef, $rev, undef) =
 351                                                 ::cmt_metadata($1);
 352                                         $rev = '0' if (!$rev);
 353                                 } else {
 354                                         $rev = '0';
 355                                 }
 356                                 $rev = sprintf('%-10s', $rev);
 357                                 $line =~ s/^\^?[[:xdigit:]]+(\s)/$rev$1/;
 358                         }
 359                         print $line;
 360                 }
 361         } else {
 362                 ($fh, $ctx) = command_output_pipe('blame', '-p', @_, 'HEAD',
 363                                                   '--', $path);
 364                 my ($sha1);
 365                 my %authors;
 366                 my @buffer;
 367                 my %dsha; #distinct sha keys
 368
 369                 while (my $line = <$fh>) {
 370                         push @buffer, $line;
 371                         if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
 372                                 $dsha{$1} = 1;
 373                         }
 374                 }
 375
 376                 my $s2r = ::cmt_sha2rev_batch([keys %dsha]);
 377
 378                 foreach my $line (@buffer) {
 379                         if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
 380                                 $rev = $s2r->{$1};
 381                                 $rev = '0' if (!$rev)
 382                         }
 383                         elsif ($line =~ /^author (.*)/) {
 384                                 $authors{$rev} = $1;
 385                                 $authors{$rev} =~ s/\s/_/g;
 386                         }
 387                         elsif ($line =~ /^\t(.*)$/) {
 388                                 printf("%6s %10s %s\n", $rev, $authors{$rev}, $1);
 389                         }
 390                 }
 391         }
 392         command_close_pipe($fh, $ctx);
 393 }
 394
 395 1;