perl / Git / SVN / Log.pmon commit Merge branch 'lt/commit-tree-guess-utf-8' (ae80b5a)
   1package Git::SVN::Log;
   2use strict;
   3use warnings;
   4use Git::SVN::Utils qw(fatal);
   5use Git qw(command command_oneline command_output_pipe command_close_pipe);
   6use POSIX qw/strftime/;
   7use constant commit_log_separator => ('-' x 72) . "\n";
   8use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
   9            %rusers $show_commit $incremental/;
  10
  11# Option set in git-svn
  12our $_git_format;
  13
  14sub cmt_showable {
  15        my ($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
  37sub log_use_color {
  38        return $color || Git->repository->get_colorbool('color.diff');
  39}
  40
  41sub git_svn_log_cmd {
  42        my ($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
  92sub 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
 105sub 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
 119sub 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
 126sub 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
 137sub set_local_timezone {
 138        if (defined $TZ) {
 139                $ENV{TZ} = $TZ;
 140        } else {
 141                delete $ENV{TZ};
 142        }
 143}
 144
 145sub tz_to_s_offset {
 146        my ($tz) = @_;
 147        $tz =~ s/(\d\d)$//;
 148        return ($1 * 60) + ($tz * 3600);
 149}
 150
 151sub 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, $tz);
 166}
 167
 168sub process_commit {
 169        my ($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
 192my $l_fmt;
 193sub 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
 210sub show_commit_changed_paths {
 211        my ($c) = @_;
 212        return unless $c->{changed};
 213        print "Changed paths:\n", @{$c->{changed}};
 214}
 215
 216sub 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->{$x}}
 252                }
 253        }
 254}
 255
 256sub cmd_show_log {
 257        my (@args) = @_;
 258        my ($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        }
 329out:
 330        close $log;
 331        print commit_log_separator unless $incremental || $oneline;
 332}
 333
 334sub 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
 3951;