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
   6            command_oneline
   7            command_output_pipe
   8            command_close_pipe
   9            get_tz_offset);
  10 use POSIX qw/strftime/;
  11 use constant commit_log_separator => ('-' x 72) . "\n";
  12 use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
  13             %rusers $show_commit $incremental/;
  14
  15 # Option set in git-svn
  16 our $_git_format;
  17
  18 sub cmt_showable {
  19         my ($c) = @_;
  20         return 1 if defined $c->{r};
  21
  22         # big commit message got truncated by the 16k pretty buffer in rev-list
  23         if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
  24                                 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
  25                 @{$c->{l}} = ();
  26                 my @log = command(qw/cat-file commit/, $c->{c});
  27
  28                 # shift off the headers
  29                 shift @log while ($log[0] ne '');
  30                 shift @log;
  31
  32                 # TODO: make $c->{l} not have a trailing newline in the future
  33                 @{$c->{l}} = map { "$_\n" } grep !/^git-svn-id: /, @log;
  34
  35                 (undef, $c->{r}, undef) = ::extract_metadata(
  36                                 (grep(/^git-svn-id: /, @log))[-1]);
  37         }
  38         return defined $c->{r};
  39 }
  40
  41 sub log_use_color {
  42         return $color || Git->repository->get_colorbool('color.diff');
  43 }
  44
  45 sub git_svn_log_cmd {
  46         my ($r_min, $r_max, @args) = @_;
  47         my $head = 'HEAD';
  48         my (@files, @log_opts);
  49         foreach my $x (@args) {
  50                 if ($x eq '--' || @files) {
  51                         push @files, $x;
  52                 } else {
  53                         if (::verify_ref("$x^0")) {
  54                                 $head = $x;
  55                         } else {
  56                                 push @log_opts, $x;
  57                         }
  58                 }
  59         }
  60
  61         my ($url, $rev, $uuid, $gs) = ::working_head_info($head);
  62
  63         require Git::SVN;
  64         $gs ||= Git::SVN->_new;
  65         my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
  66                    $gs->refname);
  67         push @cmd, '-r' unless $non_recursive;
  68         push @cmd, qw/--raw --name-status/ if $verbose;
  69         push @cmd, '--color' if log_use_color();
  70         push @cmd, @log_opts;
  71         if (defined $r_max && $r_max == $r_min) {
  72                 push @cmd, '--max-count=1';
  73                 if (my $c = $gs->rev_map_get($r_max)) {
  74                         push @cmd, $c;
  75                 }
  76         } elsif (defined $r_max) {
  77                 if ($r_max < $r_min) {
  78                         ($r_min, $r_max) = ($r_max, $r_min);
  79                 }
  80                 my (undef, $c_max) = $gs->find_rev_before($r_max, 1, $r_min);
  81                 my (undef, $c_min) = $gs->find_rev_after($r_min, 1, $r_max);
  82                 # If there are no commits in the range, both $c_max and $c_min
  83                 # will be undefined.  If there is at least 1 commit in the
  84                 # range, both will be defined.
  85                 return () if !defined $c_min || !defined $c_max;
  86                 if ($c_min eq $c_max) {
  87                         push @cmd, '--max-count=1', $c_min;
  88                 } else {
  89                         push @cmd, '--boundary', "$c_min..$c_max";
  90                 }
  91         }
  92         return (@cmd, @files);
  93 }
  94
  95 # adapted from pager.c
  96 sub config_pager {
  97         if (! -t *STDOUT) {
  98                 $ENV{GIT_PAGER_IN_USE} = 'false';
  99                 $pager = undef;
 100                 return;
 101         }
 102         chomp($pager = command_oneline(qw(var GIT_PAGER)));
 103         if ($pager eq 'cat') {
 104                 $pager = undef;
 105         }
 106         $ENV{GIT_PAGER_IN_USE} = defined($pager);
 107 }
 108
 109 sub run_pager {
 110         return unless defined $pager;
 111         pipe my ($rfd, $wfd) or return;
 112         defined(my $pid = fork) or fatal "Can't fork: $!";
 113         if (!$pid) {
 114                 open STDOUT, '>&', $wfd or
 115                                      fatal "Can't redirect to stdout: $!";
 116                 return;
 117         }
 118         open STDIN, '<&', $rfd or fatal "Can't redirect stdin: $!";
 119         $ENV{LESS} ||= 'FRX';
 120         $ENV{LV} ||= '-c';
 121         exec $pager or fatal "Can't run pager: $! ($pager)";
 122 }
 123
 124 sub format_svn_date {
 125         my $t = shift || time;
 126         require Git::SVN;
 127         my $gmoff = get_tz_offset($t);
 128         return strftime("%Y-%m-%d %H:%M:%S $gmoff (%a, %d %b %Y)", localtime($t));
 129 }
 130
 131 sub parse_git_date {
 132         my ($t, $tz) = @_;
 133         # Date::Parse isn't in the standard Perl distro :(
 134         if ($tz =~ s/^\+//) {
 135                 $t += tz_to_s_offset($tz);
 136         } elsif ($tz =~ s/^\-//) {
 137                 $t -= tz_to_s_offset($tz);
 138         }
 139         return $t;
 140 }
 141
 142 sub set_local_timezone {
 143         if (defined $TZ) {
 144                 $ENV{TZ} = $TZ;
 145         } else {
 146                 delete $ENV{TZ};
 147         }
 148 }
 149
 150 sub tz_to_s_offset {
 151         my ($tz) = @_;
 152         $tz =~ s/(\d\d)$//;
 153         return ($1 * 60) + ($tz * 3600);
 154 }
 155
 156 sub get_author_info {
 157         my ($dest, $author, $t, $tz) = @_;
 158         $author =~ s/(?:^\s*|\s*$)//g;
 159         $dest->{a_raw} = $author;
 160         my $au;
 161         if ($::_authors) {
 162                 $au = $rusers{$author} || undef;
 163         }
 164         if (!$au) {
 165                 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
 166         }
 167         $dest->{t} = $t;
 168         $dest->{tz} = $tz;
 169         $dest->{a} = $au;
 170         $dest->{t_utc} = parse_git_date($t, $tz);
 171 }
 172
 173 sub process_commit {
 174         my ($c, $r_min, $r_max, $defer) = @_;
 175         if (defined $r_min && defined $r_max) {
 176                 if ($r_min == $c->{r} && $r_min == $r_max) {
 177                         show_commit($c);
 178                         return 0;
 179                 }
 180                 return 1 if $r_min == $r_max;
 181                 if ($r_min < $r_max) {
 182                         # we need to reverse the print order
 183                         return 0 if (defined $limit && --$limit < 0);
 184                         push @$defer, $c;
 185                         return 1;
 186                 }
 187                 if ($r_min != $r_max) {
 188                         return 1 if ($r_min < $c->{r});
 189                         return 1 if ($r_max > $c->{r});
 190                 }
 191         }
 192         return 0 if (defined $limit && --$limit < 0);
 193         show_commit($c);
 194         return 1;
 195 }
 196
 197 my $l_fmt;
 198 sub show_commit {
 199         my $c = shift;
 200         if ($oneline) {
 201                 my $x = "\n";
 202                 if (my $l = $c->{l}) {
 203                         while ($l->[0] =~ /^\s*$/) { shift @$l }
 204                         $x = $l->[0];
 205                 }
 206                 $l_fmt ||= 'A' . length($c->{r});
 207                 print 'r',pack($l_fmt, $c->{r}),' | ';
 208                 print "$c->{c} | " if $show_commit;
 209                 print $x;
 210         } else {
 211                 show_commit_normal($c);
 212         }
 213 }
 214
 215 sub show_commit_changed_paths {
 216         my ($c) = @_;
 217         return unless $c->{changed};
 218         print "Changed paths:\n", @{$c->{changed}};
 219 }
 220
 221 sub show_commit_normal {
 222         my ($c) = @_;
 223         print commit_log_separator, "r$c->{r} | ";
 224         print "$c->{c} | " if $show_commit;
 225         print "$c->{a} | ", format_svn_date($c->{t_utc}), ' | ';
 226         my $nr_line = 0;
 227
 228         if (my $l = $c->{l}) {
 229                 while ($l->[$#$l] eq "\n" && $#$l > 0
 230                                           && $l->[($#$l - 1)] eq "\n") {
 231                         pop @$l;
 232                 }
 233                 $nr_line = scalar @$l;
 234                 if (!$nr_line) {
 235                         print "1 line\n\n\n";
 236                 } else {
 237                         if ($nr_line == 1) {
 238                                 $nr_line = '1 line';
 239                         } else {
 240                                 $nr_line .= ' lines';
 241                         }
 242                         print $nr_line, "\n";
 243                         show_commit_changed_paths($c);
 244                         print "\n";
 245                         print $_ foreach @$l;
 246                 }
 247         } else {
 248                 print "1 line\n";
 249                 show_commit_changed_paths($c);
 250                 print "\n";
 251
 252         }
 253         foreach my $x (qw/raw stat diff/) {
 254                 if ($c->{$x}) {
 255                         print "\n";
 256                         print $_ foreach @{$c->{$x}}
 257                 }
 258         }
 259 }
 260
 261 sub cmd_show_log {
 262         my (@args) = @_;
 263         my ($r_min, $r_max);
 264         my $r_last = -1; # prevent dupes
 265         set_local_timezone();
 266         if (defined $::_revision) {
 267                 if ($::_revision =~ /^(\d+):(\d+)$/) {
 268                         ($r_min, $r_max) = ($1, $2);
 269                 } elsif ($::_revision =~ /^\d+$/) {
 270                         $r_min = $r_max = $::_revision;
 271                 } else {
 272                         fatal "-r$::_revision is not supported, use ",
 273                                 "standard 'git log' arguments instead";
 274                 }
 275         }
 276
 277         config_pager();
 278         @args = git_svn_log_cmd($r_min, $r_max, @args);
 279         if (!@args) {
 280                 print commit_log_separator unless $incremental || $oneline;
 281                 return;
 282         }
 283         my $log = command_output_pipe(@args);
 284         run_pager();
 285         my (@k, $c, $d, $stat);
 286         my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
 287         while (<$log>) {
 288                 if (/^${esc_color}commit (?:- )?($::sha1_short)/o) {
 289                         my $cmt = $1;
 290                         if ($c && cmt_showable($c) && $c->{r} != $r_last) {
 291                                 $r_last = $c->{r};
 292                                 process_commit($c, $r_min, $r_max, \@k) or
 293                                                                 goto out;
 294                         }
 295                         $d = undef;
 296                         $c = { c => $cmt };
 297                 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
 298                         get_author_info($c, $1, $2, $3);
 299                 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
 300                         # ignore
 301                 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
 302                         push @{$c->{raw}}, $_;
 303                 } elsif (/^${esc_color}[ACRMDT]\t/) {
 304                         # we could add $SVN->{svn_path} here, but that requires
 305                         # remote access at the moment (repo_path_split)...
 306                         s#^(${esc_color})([ACRMDT])\t#$1   $2 #o;
 307                         push @{$c->{changed}}, $_;
 308                 } elsif (/^${esc_color}diff /o) {
 309                         $d = 1;
 310                         push @{$c->{diff}}, $_;
 311                 } elsif ($d) {
 312                         push @{$c->{diff}}, $_;
 313                 } elsif (/^\ .+\ \|\s*\d+\ $esc_color[\+\-]*
 314                           $esc_color*[\+\-]*$esc_color$/x) {
 315                         $stat = 1;
 316                         push @{$c->{stat}}, $_;
 317                 } elsif ($stat && /^ \d+ files changed, \d+ insertions/) {
 318                         push @{$c->{stat}}, $_;
 319                         $stat = undef;
 320                 } elsif (/^${esc_color}    (git-svn-id:.+)$/o) {
 321                         ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
 322                 } elsif (s/^${esc_color}    //o) {
 323                         push @{$c->{l}}, $_;
 324                 }
 325         }
 326         if ($c && defined $c->{r} && $c->{r} != $r_last) {
 327                 $r_last = $c->{r};
 328                 process_commit($c, $r_min, $r_max, \@k);
 329         }
 330         if (@k) {
 331                 ($r_min, $r_max) = ($r_max, $r_min);
 332                 process_commit($_, $r_min, $r_max) foreach reverse @k;
 333         }
 334 out:
 335         close $log;
 336         print commit_log_separator unless $incremental || $oneline;
 337 }
 338
 339 sub cmd_blame {
 340         my $path = pop;
 341
 342         config_pager();
 343         run_pager();
 344
 345         my ($fh, $ctx, $rev);
 346
 347         if ($_git_format) {
 348                 ($fh, $ctx) = command_output_pipe('blame', @_, $path);
 349                 while (my $line = <$fh>) {
 350                         if ($line =~ /^\^?([[:xdigit:]]+)\s/) {
 351                                 # Uncommitted edits show up as a rev ID of
 352                                 # all zeros, which we can't look up with
 353                                 # cmt_metadata
 354                                 if ($1 !~ /^0+$/) {
 355                                         (undef, $rev, undef) =
 356                                                 ::cmt_metadata($1);
 357                                         $rev = '0' if (!$rev);
 358                                 } else {
 359                                         $rev = '0';
 360                                 }
 361                                 $rev = sprintf('%-10s', $rev);
 362                                 $line =~ s/^\^?[[:xdigit:]]+(\s)/$rev$1/;
 363                         }
 364                         print $line;
 365                 }
 366         } else {
 367                 ($fh, $ctx) = command_output_pipe('blame', '-p', @_, 'HEAD',
 368                                                   '--', $path);
 369                 my ($sha1);
 370                 my %authors;
 371                 my @buffer;
 372                 my %dsha; #distinct sha keys
 373
 374                 while (my $line = <$fh>) {
 375                         push @buffer, $line;
 376                         if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
 377                                 $dsha{$1} = 1;
 378                         }
 379                 }
 380
 381                 my $s2r = ::cmt_sha2rev_batch([keys %dsha]);
 382
 383                 foreach my $line (@buffer) {
 384                         if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
 385                                 $rev = $s2r->{$1};
 386                                 $rev = '0' if (!$rev)
 387                         }
 388                         elsif ($line =~ /^author (.*)/) {
 389                                 $authors{$rev} = $1;
 390                                 $authors{$rev} =~ s/\s/_/g;
 391                         }
 392                         elsif ($line =~ /^\t(.*)$/) {
 393                                 printf("%6s %10s %s\n", $rev, $authors{$rev}, $1);
 394                         }
 395                 }
 396         }
 397         command_close_pipe($fh, $ctx);
 398 }
 399
 400 1;