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1 | package Gitalist::Model::Git; |
2 | |
3 | use Moose; |
4 | use namespace::autoclean; |
5 | |
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6 | BEGIN { extends 'Catalyst::Model' } |
7 | |
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8 | use DateTime; |
9 | use Path::Class; |
10 | use Carp qw/croak/; |
11 | use File::Find::Rule; |
12 | use DateTime::Format::Mail; |
13 | use File::Stat::ModeString; |
14 | use List::MoreUtils qw/any/; |
15 | use Scalar::Util qw/blessed/; |
16 | |
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17 | # abstraction fail - but currently needed for unit tests to work |
18 | use Gitalist; |
19 | |
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20 | { |
21 | my $git; |
22 | sub git { |
23 | return $git |
24 | if $git; |
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25 | |
26 | if (my $config_git = Gitalist->config->{git}) { |
27 | $git = $config_git if -x $config_git; |
28 | } |
29 | else { |
30 | require File::Which; |
31 | $git = File::Which::which('git'); |
32 | } |
33 | |
34 | if (!$git) { |
35 | die <<EOR |
36 | Could not find a git executable. |
37 | Please specify the which git executable to use in gitweb.yml |
38 | EOR |
39 | } |
40 | |
41 | return $git; |
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42 | } |
43 | } |
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44 | |
45 | sub is_git_repo { |
46 | my ($self, $dir) = @_; |
47 | |
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48 | return -f $dir->file('HEAD') || -f $dir->file('.git/HEAD'); |
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49 | } |
50 | |
51 | sub project_info { |
52 | my ($self, $project) = @_; |
53 | |
54 | return { |
55 | name => $project, |
56 | $self->get_project_properties( |
57 | $self->git_dir_from_project_name($project), |
58 | ), |
59 | }; |
60 | } |
61 | |
62 | sub get_project_properties { |
63 | my ($self, $dir) = @_; |
64 | my %props; |
65 | |
66 | eval { |
67 | $props{description} = $dir->file('description')->slurp; |
68 | chomp $props{description}; |
69 | }; |
70 | |
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71 | if ($props{description} && $props{description} =~ /^Unnamed repository;/) { |
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72 | delete $props{description}; |
73 | } |
74 | |
75 | $props{owner} = (getpwuid $dir->stat->uid)[6]; |
76 | |
77 | my $output = $self->run_cmd_in($dir, qw{ |
78 | for-each-ref --format=%(committer) |
79 | --sort=-committerdate --count=1 refs/heads |
80 | }); |
81 | |
82 | if (my ($epoch, $tz) = $output =~ /\s(\d+)\s+([+-]\d+)$/) { |
83 | my $dt = DateTime->from_epoch(epoch => $epoch); |
84 | $dt->set_time_zone($tz); |
85 | $props{last_change} = $dt; |
86 | } |
87 | |
88 | return %props; |
89 | } |
90 | |
91 | sub list_projects { |
92 | my ($self) = @_; |
93 | |
94 | my $base = dir(Gitalist->config->{repo_dir}); |
95 | |
96 | my @ret; |
97 | my $dh = $base->open; |
98 | while (my $file = $dh->read) { |
99 | next if $file =~ /^.{1,2}$/; |
100 | |
101 | my $obj = $base->subdir($file); |
102 | next unless -d $obj; |
103 | next unless $self->is_git_repo($obj); |
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104 | # XXX Leaky abstraction alert! |
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105 | my $is_bare = !-d $obj->subdir('.git'); |
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106 | |
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107 | my $name = (File::Spec->splitdir($obj))[-1]; |
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108 | push @ret, { |
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109 | name => ($name . ( $is_bare ? '.git' : '/.git' )), |
110 | $self->get_project_properties( |
111 | $is_bare ? $obj : $obj->subdir('.git') |
112 | ), |
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113 | }; |
114 | } |
115 | |
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116 | return [sort { $a->{name} cmp $b->{name} } @ret]; |
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117 | } |
118 | |
119 | sub run_cmd { |
120 | my ($self, @args) = @_; |
121 | |
122 | open my $fh, '-|', __PACKAGE__->git, @args |
123 | or die "failed to run git command"; |
124 | binmode $fh, ':encoding(UTF-8)'; |
125 | |
126 | my $output = do { local $/ = undef; <$fh> }; |
127 | close $fh; |
128 | |
129 | return $output; |
130 | } |
131 | |
132 | sub run_cmd_in { |
133 | my ($self, $project, @args) = @_; |
134 | |
135 | my $path; |
136 | if (blessed($project) && $project->isa('Path::Class::Dir')) { |
137 | $path = $project->stringify; |
138 | } |
139 | else { |
140 | $path = $self->git_dir_from_project_name($project); |
141 | } |
142 | return $self->run_cmd('--git-dir' => $path, @args); |
143 | } |
144 | |
145 | sub git_dir_from_project_name { |
146 | my ($self, $project) = @_; |
147 | |
148 | return dir(Gitalist->config->{repo_dir})->subdir($project); |
149 | } |
150 | |
151 | sub get_head_hash { |
152 | my ($self, $project) = @_; |
153 | |
154 | my $output = $self->run_cmd_in($project, qw/rev-parse --verify HEAD/ ); |
155 | return unless defined $output; |
156 | |
157 | my ($head) = $output =~ /^([0-9a-fA-F]{40})$/; |
158 | return $head; |
159 | } |
160 | |
161 | sub list_tree { |
162 | my ($self, $project, $rev) = @_; |
163 | |
164 | $rev ||= $self->get_head_hash($project); |
165 | |
166 | my $output = $self->run_cmd_in($project, qw/ls-tree -z/, $rev); |
167 | return unless defined $output; |
168 | |
169 | my @ret; |
170 | for my $line (split /\0/, $output) { |
171 | my ($mode, $type, $object, $file) = split /\s+/, $line, 4; |
172 | |
173 | push @ret, { |
174 | mode => oct $mode, |
175 | type => $type, |
176 | object => $object, |
177 | file => $file, |
178 | }; |
179 | } |
180 | |
181 | return @ret; |
182 | } |
183 | |
184 | sub get_object_mode_string { |
185 | my ($self, $object) = @_; |
186 | |
187 | return unless $object && $object->{mode}; |
188 | return mode_to_string($object->{mode}); |
189 | } |
190 | |
191 | sub get_object_type { |
192 | my ($self, $project, $object) = @_; |
193 | |
194 | my $output = $self->run_cmd_in($project, qw/cat-file -t/, $object); |
195 | return unless $output; |
196 | |
197 | chomp $output; |
198 | return $output; |
199 | } |
200 | |
201 | sub cat_file { |
202 | my ($self, $project, $object) = @_; |
203 | |
204 | my $type = $self->get_object_type($project, $object); |
205 | die "object `$object' is not a file\n" |
206 | if (!defined $type || $type ne 'blob'); |
207 | |
208 | my $output = $self->run_cmd_in($project, qw/cat-file -p/, $object); |
209 | return unless $output; |
210 | |
211 | return $output; |
212 | } |
213 | |
214 | sub valid_rev { |
215 | my ($self, $rev) = @_; |
216 | |
217 | return unless $rev; |
218 | return ($rev =~ /^([0-9a-fA-F]{40})$/); |
219 | } |
220 | |
221 | sub diff { |
222 | my ($self, $project, @revs) = @_; |
223 | |
224 | croak("Gitalist::Model::Git::diff needs a project and either one or two revisions") |
225 | if scalar @revs < 1 |
226 | || scalar @revs > 2 |
227 | || any { !$self->valid_rev($_) } @revs; |
228 | |
229 | my $output = $self->run_cmd_in($project, 'diff', @revs); |
230 | return unless $output; |
231 | |
232 | return $output; |
233 | } |
234 | |
235 | { |
236 | my $formatter = DateTime::Format::Mail->new; |
237 | |
238 | sub parse_rev_list { |
239 | my ($self, $output) = @_; |
240 | my @ret; |
241 | |
242 | my @revs = split /\0/, $output; |
243 | |
244 | for my $rev (split /\0/, $output) { |
245 | for my $line (split /\n/, $rev, 6) { |
246 | chomp $line; |
247 | next unless $line; |
248 | |
249 | if ($self->valid_rev($line)) { |
250 | push @ret, {rev => $line}; |
251 | next; |
252 | } |
253 | |
254 | if (my ($key, $value) = $line =~ /^(tree|parent)\s+(.*)$/) { |
255 | $ret[-1]->{$key} = $value; |
256 | next; |
257 | } |
258 | |
259 | if (my ($key, $value, $epoch, $tz) = $line =~ /^(author|committer)\s+(.*)\s+(\d+)\s+([+-]\d+)$/) { |
260 | $ret[-1]->{$key} = $value; |
261 | eval { |
262 | $ret[-1]->{ $key . "_datetime" } = DateTime->from_epoch(epoch => $epoch); |
263 | $ret[-1]->{ $key . "_datetime" }->set_time_zone($tz); |
264 | $ret[-1]->{ $key . "_datetime" }->set_formatter($formatter); |
265 | }; |
266 | |
267 | if ($@) { |
268 | $ret[-1]->{ $key . "_datetime" } = "$epoch $tz"; |
269 | } |
270 | |
271 | if (my ($name, $email) = $value =~ /^([^<]+)\s+<([^>]+)>$/) { |
272 | $ret[-1]->{ $key . "_name" } = $name; |
273 | $ret[-1]->{ $key . "_email" } = $email; |
274 | } |
275 | } |
276 | |
277 | $line =~ s/^\n?\s{4}//; |
278 | $ret[-1]->{longmessage} = $line; |
279 | $ret[-1]->{message} = (split /\n/, $line, 2)[0]; |
280 | } |
281 | } |
282 | |
283 | return @ret; |
284 | } |
285 | } |
286 | |
287 | sub list_revs { |
288 | my ($self, $project, %args) = @_; |
289 | |
290 | $args{rev} ||= $self->get_head_hash($project); |
291 | |
292 | my $output = $self->run_cmd_in($project, 'rev-list', |
293 | '--header', |
294 | (defined $args{ count } ? "--max-count=$args{count}" : ()), |
295 | (defined $args{ skip } ? "--skip=$args{skip}" : ()), |
296 | $args{rev}, |
297 | '--', |
298 | ($args{file} || ()), |
299 | ); |
300 | return unless $output; |
301 | |
302 | my @revs = $self->parse_rev_list($output); |
303 | |
304 | return \@revs; |
305 | } |
306 | |
307 | sub rev_info { |
308 | my ($self, $project, $rev) = @_; |
309 | |
310 | return unless $self->valid_rev($rev); |
311 | |
312 | return $self->list_revs($project, rev => $rev, count => 1); |
313 | } |
314 | |
315 | sub get_heads { |
316 | my ($self, $project) = @_; |
317 | |
318 | my $output = $self->run_cmd_in($project, qw/for-each-ref --sort=-committerdate /, '--format=%(objectname)%00%(refname)%00%(committer)', 'refs/heads'); |
319 | return unless $output; |
320 | |
321 | my @ret; |
322 | for my $line (split /\n/, $output) { |
323 | my ($rev, $head, $commiter) = split /\0/, $line, 3; |
324 | $head =~ s!^refs/heads/!!; |
325 | |
326 | push @ret, { rev => $rev, name => $head }; |
327 | |
328 | #FIXME: That isn't the time I'm looking for.. |
329 | if (my ($epoch, $tz) = $output =~ /\s(\d+)\s+([+-]\d+)$/) { |
330 | my $dt = DateTime->from_epoch(epoch => $epoch); |
331 | $dt->set_time_zone($tz); |
332 | $ret[-1]->{last_change} = $dt; |
333 | } |
334 | } |
335 | |
336 | return \@ret; |
337 | } |
338 | |
339 | sub archive { |
340 | my ($self, $project, $rev) = @_; |
341 | |
342 | #FIXME: huge memory consuption |
343 | #TODO: compression |
344 | return $self->run_cmd_in($project, qw/archive --format=tar/, "--prefix=${project}/", $rev); |
345 | } |
346 | |
347 | 1; |
348 | |
349 | __PACKAGE__->meta->make_immutable; |