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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 ArrayRef/; |
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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 | has tree => ( isa => 'ArrayRef[Gitalist::Git::Object]', |
70 | required => 0, |
71 | is => 'ro', |
72 | lazy_build => 1 ); |
73 | |
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74 | method BUILD { $self->$_() for qw/_gpp_obj type size modestr/ } |
75 | |
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76 | method _build_tree { |
77 | confess("Can't list_tree on a blob object.") |
78 | if $self->type eq 'blob'; |
79 | my $output = $self->_run_cmd(qw/ls-tree -z/, $self->sha1); |
80 | return unless defined $output; |
81 | |
82 | my @ret; |
83 | for my $line (split /\0/, $output) { |
84 | my ($mode, $type, $object, $file) = split /\s+/, $line, 4; |
85 | push @ret, Gitalist::Git::Object->new( mode => oct $mode, |
86 | type => $type, |
87 | sha1 => $object, |
88 | file => $file, |
89 | project => $self->project, |
90 | ); |
91 | } |
92 | return \@ret; |
93 | } |
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94 | |
95 | method diff ( Maybe[Bool] :$patch?, |
96 | Maybe[NonEmptySimpleStr] :$parent?, |
97 | Maybe[NonEmptySimpleStr] :$file? |
98 | ) { |
99 | # Use parent if specifed, else take the parent from the commit |
100 | # if there is only one, otherwise it was a merge commit. |
101 | $parent = $parent |
102 | ? $parent |
103 | : $self->parents <= 1 |
104 | ? $self->parent_sha1 |
105 | : '-c'; |
106 | my @etc = ( |
107 | ( $file ? ('--', $file) : () ), |
108 | ); |
109 | |
110 | my @out = $self->_raw_diff( |
111 | ( $patch ? '--patch-with-raw' : () ), |
112 | ( $parent ? $parent : () ), |
113 | $self->sha1, @etc, |
114 | ); |
115 | |
116 | # XXX Yes, there is much wrongness having _parse_diff_tree be destructive. |
117 | my @difftree = $self->_parse_diff_tree(\@out); |
118 | |
119 | return \@difftree |
120 | unless $patch; |
121 | |
122 | # The blank line between the tree and the patch. |
123 | shift @out; |
124 | |
125 | # XXX And no I'm not happy about having diff return tree + patch. |
126 | return \@difftree, [$self->_parse_diff(@out)]; |
127 | } |
128 | |
129 | ## Private methods |
130 | # gitweb uses the following sort of command for diffing merges: |
131 | # /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 -- |
132 | # and for regular diffs |
133 | # /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 -- |
134 | method _raw_diff (@args) { |
135 | return $self->_run_cmd_list( |
136 | qw(diff-tree -r -M --no-commit-id --full-index), |
137 | @args |
138 | ); |
139 | } |
140 | |
141 | method _parse_diff_tree ($diff) { |
142 | my @keys = qw(modesrc modedst sha1src sha1dst status src dst); |
143 | my @ret; |
144 | while (@$diff and $diff->[0] =~ /^:\d+/) { |
145 | my $line = shift @$diff; |
146 | # see. man git-diff-tree for more info |
147 | # mode src, mode dst, sha1 src, sha1 dst, status, src[, dst] |
148 | my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/; |
149 | my %line = zip @keys, @vals; |
150 | # Some convenience keys |
151 | $line{file} = $line{src}; |
152 | $line{sha1} = $line{sha1dst}; |
153 | $line{is_new} = $line{sha1src} =~ /^0+$/ |
154 | if $line{sha1src}; |
155 | @line{qw/status sim/} = $line{status} =~ /(R)(\d+)/ |
156 | if $line{status} =~ /^R/; |
157 | push @ret, \%line; |
158 | } |
159 | |
160 | return @ret; |
161 | } |
162 | |
163 | method _parse_diff (@diff) { |
164 | my @ret; |
165 | for (@diff) { |
166 | # This regex is a little pathological. |
167 | if (m{^diff --git (a/(.*?)) (b/\2)}) { |
168 | push @ret, { |
169 | head => $_, |
170 | a => $1, |
171 | b => $3, |
172 | file => $2, |
173 | diff => '', |
174 | }; |
175 | next; |
176 | } |
177 | |
178 | if (/^index (\w+)\.\.(\w+) (\d+)$/) { |
179 | @{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3); |
180 | next |
181 | } |
182 | |
183 | # XXX Somewhat hacky. Ahem. |
184 | $ret[@ret ? -1 : 0]{diff} .= "$_\n"; |
185 | } |
186 | |
187 | return @ret; |
188 | } |
189 | |
190 | |
191 | ## Builders |
192 | method _build__gpp_obj { |
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193 | return $self->_get_gpp_object($self->sha1) |
194 | } |
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195 | |
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196 | foreach my $key (qw/ type size /) { |
197 | method "_build_$key" { |
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198 | my $v = $self->_cat_file_with_flag(substr($key, 0, 1)); |
199 | chomp($v); |
200 | return $v; |
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201 | } |
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202 | } |
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203 | |
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204 | method _build_modestr { |
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205 | my $modestr = mode_to_string($self->mode); |
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206 | return $modestr; |
207 | } |
208 | |
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209 | method _cat_file_with_flag ($flag) { |
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210 | $self->_run_cmd('cat-file', '-' . $flag, $self->{sha1}) |
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211 | } |
212 | |
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213 | } # end class |