lib/Gitalist/Git/Object/Commit.pm

   1 package Gitalist::Git::Object::Commit;
   2 use MooseX::Declare;
   3
   4 class Gitalist::Git::Object::Commit
   5     extends Gitalist::Git::Object
   6     with Gitalist::Git::Object::HasTree {
   7         use MooseX::Types::Moose qw/Str Int Bool Maybe ArrayRef/;
   8         use MooseX::Types::Common::String qw/NonEmptySimpleStr/;
   9         use Moose::Autobox;
  10         use List::MoreUtils qw/any zip/;
  11         use Gitalist::Util qw(to_utf8);
  12         our $SHA1RE = qr/[0-9a-fA-F]{40}/;
  13
  14         has '+type' => ( default => 'commit' );
  15         has '+_gpp_obj' => ( handles => [ 'comment',
  16                                           'tree_sha1',
  17                                           'committer',
  18                                           'committed_time',
  19                                           'author',
  20                                           'authored_time',
  21                                           'parents',
  22                                           'parent_sha1',
  23                                           'parent_sha1s',
  24                                       ],
  25                          );
  26
  27         method get_patch ( Maybe[NonEmptySimpleStr] $parent_hash?,
  28                            Int $patch_count?) {
  29             # assembling the git command to execute...
  30             my @cmd = qw/format-patch --encoding=utf8 --stdout/;
  31
  32             # patch, or patch set?
  33             push @cmd,
  34                 defined $patch_count
  35                 ? "-$patch_count -n" : "-1";
  36
  37             # refspec
  38             if (defined $parent_hash) {
  39                 #  if a parent is specified: hp..h
  40                 push @cmd, "$parent_hash.." . $self->sha1;
  41             } else {
  42                 #  if not, but a merge commit: --cc h
  43                 #  otherwise: --root h
  44                 push @cmd, $self->parents->length > 1
  45                     ? '--cc' : '--root';
  46                 push @cmd, $self->sha1;
  47             }
  48             return $self->_run_cmd_fh( @cmd );
  49         }
  50
  51         method diff ( Maybe[Bool] :$patch?,
  52                        Maybe[NonEmptySimpleStr] :$parent?,
  53                        Maybe[NonEmptySimpleStr] :$file?
  54                    ) {
  55             $parent = $parent
  56                 ? $parent
  57                     : $self->parents <= 1
  58                         ? $self->parent_sha1
  59                             : '-c';
  60             my @etc = (
  61                 ( $file  ? ('--', $file) : () ),
  62             );
  63
  64             my @out = $self->_raw_diff(
  65                 ( $patch ? '--patch-with-raw' : () ),
  66                 ( $parent ? $parent : () ),
  67                 $self->sha1, @etc,
  68             );
  69
  70             # XXX Yes, there is much wrongness having _parse_diff_tree be destructive.
  71             my @difftree = $self->_parse_diff_tree(\@out);
  72
  73             return \@difftree
  74                 unless $patch;
  75
  76             # The blank line between the tree and the patch.
  77             shift @out;
  78
  79             # XXX And no I'm not happy about having diff return tree + patch.
  80             return \@difftree, [$self->_parse_diff(@out)];
  81         }
  82
  83 method snapshot ( NonEmptySimpleStr $format ) {
  84     # TODO - only valid formats are 'tar' and 'zip'
  85     my $formats = { tgz => 'tar', zip => 'zip' };
  86     unless ($formats->exists($format)) {
  87         die("No such format: $format");
  88     }
  89     $format = $formats->{$format};
  90     my $name = $self->project->name;
  91     $name =~ s,([^/])/*\.git$,$1,;
  92     my $filename = to_utf8($name);
  93     $filename .= "-$self->sha1.$format";
  94     $name =~ s/\047/\047\\\047\047/g;
  95
  96
  97     my @cmd = ('archive', "--format=$format", "--prefix=$name/", $self->sha1);
  98     return $self->_run_cmd_fh(@cmd);
  99     # TODO - support compressed archives
 100 }
 101
 102         ## Private methods
 103         # gitweb uses the following sort of command for diffing merges:
 104         # /home/dbrook/apps/bin/git --git-dir=/home/dbrook/dev/app/.git diff-tree -r -M --no-commit-id --patch-with-raw --full-index --cc 316cf158df3f6207afbae7270bcc5ba0 --
 105         # and for regular diffs
 106         # /home/dbrook/apps/bin/git --git-dir=/home/dbrook/dev/app/.git diff-tree -r -M --no-commit-id --patch-with-raw --full-index 2e3454ca0749641b42f063730b0090e1 316cf158df3f6207afbae7270bcc5ba0 --
 107         method _raw_diff (@args) {
 108             return $self->_run_cmd_list(
 109                 qw(diff-tree -r -M --no-commit-id --full-index),
 110                 @args
 111             );
 112         }
 113
 114         method _parse_diff_tree ($diff) {
 115             my @keys = qw(modesrc modedst sha1src sha1dst status src dst);
 116             my @ret;
 117             while (@$diff and $diff->[0] =~ /^:\d+/) {
 118                 my $line = shift @$diff;
 119                 # see. man git-diff-tree for more info
 120                 # mode src, mode dst, sha1 src, sha1 dst, status, src[, dst]
 121                 my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/;
 122                 my %line = zip @keys, @vals;
 123                 # Some convenience keys
 124                 $line{file}   = $line{src};
 125                 $line{sha1}   = $line{sha1dst};
 126                 $line{is_new} = $line{sha1src} =~ /^0+$/
 127                     if $line{sha1src};
 128                 @line{qw/status sim/} = $line{status} =~ /(R)(\d+)/
 129                     if $line{status} =~ /^R/;
 130                 push @ret, \%line;
 131             }
 132
 133             return @ret;
 134         }
 135
 136         method _parse_diff (@diff) {
 137             my @ret;
 138             for (@diff) {
 139                 # This regex is a little pathological.
 140                 if (m{^diff --git (a/(.*?)) (b/\2)}) {
 141                     push @ret, {
 142                         head => $_,
 143                         a    => $1,
 144                         b    => $3,
 145                         file => $2,
 146                         diff => '',
 147                     };
 148                     next;
 149                 }
 150
 151                 if (/^index (\w+)\.\.(\w+) (\d+)$/) {
 152                     @{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3);
 153                     next
 154                 }
 155
 156                 # XXX Somewhat hacky. Ahem.
 157                 $ret[@ret ? -1 : 0]{diff} .= "$_\n";
 158             }
 159
 160             return @ret;
 161         }
 162
 163     }