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