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1 | use MooseX::Declare; |
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2 | use Moose::Autobox; |
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3 | |
4 | class Gitalist::Git::Object { |
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5 | use MooseX::Types::Moose qw/Str Int Bool Maybe/; |
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6 | use MooseX::Types::Common::String qw/NonEmptySimpleStr/; |
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7 | use File::Stat::ModeString qw/mode_to_string/; |
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8 | use List::MoreUtils qw/any zip/; |
9 | |
10 | our $SHA1RE = qr/[0-9a-fA-F]{40}/; |
11 | |
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12 | # project and sha1 are required initargs |
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13 | has project => ( isa => 'Gitalist::Git::Project', |
14 | required => 1, |
15 | is => 'ro', |
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16 | weak_ref => 1, |
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17 | handles => { |
18 | _run_cmd => 'run_cmd', |
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19 | _run_cmd_list => 'run_cmd_list', |
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20 | _get_gpp_object => 'get_gpp_object', |
21 | }, |
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22 | ); |
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23 | has sha1 => ( isa => NonEmptySimpleStr, |
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24 | required => 1, |
25 | is => 'ro' ); |
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26 | |
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27 | has $_ => ( isa => NonEmptySimpleStr, |
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28 | required => 1, |
29 | is => 'ro', |
30 | lazy_build => 1 ) |
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31 | for qw/type modestr size/; |
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32 | |
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33 | has _gpp_obj => ( isa => 'Git::PurePerl::Object', |
34 | required => 1, |
35 | is => 'ro', |
36 | lazy_build => 1, |
37 | handles => [ 'parents', |
38 | 'parent_sha1', |
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39 | 'author', |
40 | 'authored_time', |
41 | 'committer', |
42 | 'committed_time', |
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43 | ], |
44 | ); |
45 | |
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46 | # This feels wrong, but current templates assume |
47 | # these attributes are present on every object. |
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48 | foreach my $key (qw/tree_sha1 comment content/) { |
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49 | has $key => ( isa => Str, |
50 | required => 1, |
51 | is => 'ro', |
52 | lazy_build => 1, |
53 | ); |
54 | method "_build_$key" { |
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55 | confess("Object can't " . $key) unless $self->_gpp_obj->can($key); |
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56 | return $self->_gpp_obj->$key; |
57 | } |
58 | } |
59 | |
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60 | # objects can't determine their mode or filename |
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61 | has file => ( isa => NonEmptySimpleStr, |
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62 | required => 0, |
63 | is => 'ro' ); |
64 | has mode => ( isa => Int, |
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65 | required => 1, |
66 | default => 0, |
67 | is => 'ro' ); |
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68 | |
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69 | method BUILD { $self->$_() for qw/_gpp_obj type size modestr/ } |
70 | |
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71 | |
72 | method diff ( Maybe[Bool] :$patch?, |
73 | Maybe[NonEmptySimpleStr] :$parent?, |
74 | Maybe[NonEmptySimpleStr] :$file? |
75 | ) { |
76 | # Use parent if specifed, else take the parent from the commit |
77 | # if there is only one, otherwise it was a merge commit. |
78 | $parent = $parent |
79 | ? $parent |
80 | : $self->parents <= 1 |
81 | ? $self->parent_sha1 |
82 | : '-c'; |
83 | my @etc = ( |
84 | ( $file ? ('--', $file) : () ), |
85 | ); |
86 | |
87 | my @out = $self->_raw_diff( |
88 | ( $patch ? '--patch-with-raw' : () ), |
89 | ( $parent ? $parent : () ), |
90 | $self->sha1, @etc, |
91 | ); |
92 | |
93 | # XXX Yes, there is much wrongness having _parse_diff_tree be destructive. |
94 | my @difftree = $self->_parse_diff_tree(\@out); |
95 | |
96 | return \@difftree |
97 | unless $patch; |
98 | |
99 | # The blank line between the tree and the patch. |
100 | shift @out; |
101 | |
102 | # XXX And no I'm not happy about having diff return tree + patch. |
103 | return \@difftree, [$self->_parse_diff(@out)]; |
104 | } |
105 | |
106 | ## Private methods |
107 | # gitweb uses the following sort of command for diffing merges: |
108 | # /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 -- |
109 | # and for regular diffs |
110 | # /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 -- |
111 | method _raw_diff (@args) { |
112 | return $self->_run_cmd_list( |
113 | qw(diff-tree -r -M --no-commit-id --full-index), |
114 | @args |
115 | ); |
116 | } |
117 | |
118 | method _parse_diff_tree ($diff) { |
119 | my @keys = qw(modesrc modedst sha1src sha1dst status src dst); |
120 | my @ret; |
121 | while (@$diff and $diff->[0] =~ /^:\d+/) { |
122 | my $line = shift @$diff; |
123 | # see. man git-diff-tree for more info |
124 | # mode src, mode dst, sha1 src, sha1 dst, status, src[, dst] |
125 | my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/; |
126 | my %line = zip @keys, @vals; |
127 | # Some convenience keys |
128 | $line{file} = $line{src}; |
129 | $line{sha1} = $line{sha1dst}; |
130 | $line{is_new} = $line{sha1src} =~ /^0+$/ |
131 | if $line{sha1src}; |
132 | @line{qw/status sim/} = $line{status} =~ /(R)(\d+)/ |
133 | if $line{status} =~ /^R/; |
134 | push @ret, \%line; |
135 | } |
136 | |
137 | return @ret; |
138 | } |
139 | |
140 | method _parse_diff (@diff) { |
141 | my @ret; |
142 | for (@diff) { |
143 | # This regex is a little pathological. |
144 | if (m{^diff --git (a/(.*?)) (b/\2)}) { |
145 | push @ret, { |
146 | head => $_, |
147 | a => $1, |
148 | b => $3, |
149 | file => $2, |
150 | diff => '', |
151 | }; |
152 | next; |
153 | } |
154 | |
155 | if (/^index (\w+)\.\.(\w+) (\d+)$/) { |
156 | @{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3); |
157 | next |
158 | } |
159 | |
160 | # XXX Somewhat hacky. Ahem. |
161 | $ret[@ret ? -1 : 0]{diff} .= "$_\n"; |
162 | } |
163 | |
164 | return @ret; |
165 | } |
166 | |
167 | |
168 | ## Builders |
169 | method _build__gpp_obj { |
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170 | return $self->_get_gpp_object($self->sha1) |
171 | } |
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172 | |
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173 | foreach my $key (qw/ type size /) { |
174 | method "_build_$key" { |
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175 | my $v = $self->_cat_file_with_flag(substr($key, 0, 1)); |
176 | chomp($v); |
177 | return $v; |
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178 | } |
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179 | } |
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180 | |
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181 | method _build_modestr { |
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182 | my $modestr = mode_to_string($self->mode); |
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183 | return $modestr; |
184 | } |
185 | |
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186 | method _cat_file_with_flag ($flag) { |
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187 | $self->_run_cmd('cat-file', '-' . $flag, $self->{sha1}) |
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188 | } |
189 | |
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190 | } # end class |