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d3968363 ML |
1 | #!/usr/bin/perl -w |
2 | # | |
3 | # This tool is copyright (c) 2005, Martin Langhoff. | |
4 | # It is released under the Gnu Public License, version 2. | |
5 | # | |
6 | # The basic idea is to walk the output of tla abrowse, | |
7 | # fetch the changesets and apply them. | |
8 | # | |
241b5967 | 9 | |
d3968363 ML |
10 | =head1 Invocation |
11 | ||
241b5967 | 12 | git-archimport [ -h ] [ -v ] [ -T ] [ -t tempdir ] <archive>/<branch> [ <archive>/<branch> ] |
d3968363 | 13 | |
241b5967 ML |
14 | Imports a project from one or more Arch repositories. It will follow branches |
15 | and repositories within the namespaces defined by the <archive/branch> | |
16 | parameters suppplied. If it cannot find the remote branch a merge comes from | |
17 | it will just import it as a regular commit. If it can find it, it will mark it | |
18 | as a merge whenever possible. | |
d3968363 | 19 | |
241b5967 | 20 | See man (1) git-archimport for more details. |
d3968363 | 21 | |
241b5967 | 22 | =head1 TODO |
d3968363 | 23 | |
241b5967 | 24 | - create tag objects instead of ref tags |
d3968363 | 25 | - audit shell-escaping of filenames |
241b5967 ML |
26 | - hide our private tags somewhere smarter |
27 | - find a way to make "cat *patches | patch" safe even when patchfiles are missing newlines | |
3e525e67 EW |
28 | - sort and apply patches by graphing ancestry relations instead of just |
29 | relying in dates supplied in the changeset itself. | |
30 | tla ancestry-graph -m could be helpful here... | |
d3968363 ML |
31 | |
32 | =head1 Devel tricks | |
33 | ||
34 | Add print in front of the shell commands invoked via backticks. | |
35 | ||
22ff00fc EW |
36 | =head1 Devel Notes |
37 | ||
38 | There are several places where Arch and git terminology are intermixed | |
39 | and potentially confused. | |
40 | ||
41 | The notion of a "branch" in git is approximately equivalent to | |
42 | a "archive/category--branch--version" in Arch. Also, it should be noted | |
43 | that the "--branch" portion of "archive/category--branch--version" is really | |
44 | optional in Arch although not many people (nor tools!) seem to know this. | |
45 | This means that "archive/category--version" is also a valid "branch" | |
46 | in git terms. | |
47 | ||
48 | We always refer to Arch names by their fully qualified variant (which | |
49 | means the "archive" name is prefixed. | |
50 | ||
51 | For people unfamiliar with Arch, an "archive" is the term for "repository", | |
52 | and can contain multiple, unrelated branches. | |
53 | ||
d3968363 ML |
54 | =cut |
55 | ||
56 | use strict; | |
57 | use warnings; | |
58 | use Getopt::Std; | |
42f44b08 | 59 | use File::Temp qw(tempdir); |
f88961a8 | 60 | use File::Path qw(mkpath rmtree); |
d3968363 | 61 | use File::Basename qw(basename dirname); |
d3968363 ML |
62 | use Data::Dumper qw/ Dumper /; |
63 | use IPC::Open2; | |
64 | ||
65 | $SIG{'PIPE'}="IGNORE"; | |
66 | $ENV{'TZ'}="UTC"; | |
67 | ||
1d4710d0 ML |
68 | my $git_dir = $ENV{"GIT_DIR"} || ".git"; |
69 | $ENV{"GIT_DIR"} = $git_dir; | |
a7fb51d3 | 70 | my $ptag_dir = "$git_dir/archimport/tags"; |
1d4710d0 | 71 | |
3e525e67 | 72 | our($opt_h,$opt_f,$opt_v,$opt_T,$opt_t,$opt_D,$opt_a,$opt_o); |
d3968363 ML |
73 | |
74 | sub usage() { | |
75 | print STDERR <<END; | |
76 | Usage: ${\basename $0} # fetch/update GIT from Arch | |
3e525e67 | 77 | [ -f ] [ -o ] [ -h ] [ -v ] [ -T ] [ -a ] [ -D depth ] [ -t tempdir ] |
d3968363 ML |
78 | repository/arch-branch [ repository/arch-branch] ... |
79 | END | |
80 | exit(1); | |
81 | } | |
82 | ||
3e525e67 | 83 | getopts("fThvat:D:") or usage(); |
d3968363 ML |
84 | usage if $opt_h; |
85 | ||
86 | @ARGV >= 1 or usage(); | |
42f44b08 EW |
87 | # $arch_branches: |
88 | # values associated with keys: | |
89 | # =1 - Arch version / git 'branch' detected via abrowse on a limit | |
90 | # >1 - Arch version / git 'branch' of an auxilliary branch we've merged | |
91 | my %arch_branches = map { $_ => 1 } @ARGV; | |
d3968363 | 92 | |
5744f277 EW |
93 | $ENV{'TMPDIR'} = $opt_t if $opt_t; # $ENV{TMPDIR} will affect tempdir() calls: |
94 | my $tmp = tempdir('git-archimport-XXXXXX', TMPDIR => 1, CLEANUP => 1); | |
127bf00f | 95 | $opt_v && print "+ Using $tmp as temporary directory\n"; |
d3968363 | 96 | |
42f44b08 EW |
97 | my %reachable = (); # Arch repositories we can access |
98 | my %unreachable = (); # Arch repositories we can't access :< | |
d3968363 | 99 | my @psets = (); # the collection |
b779d5f0 | 100 | my %psets = (); # the collection, by name |
3e525e67 EW |
101 | my %stats = ( # Track which strategy we used to import: |
102 | get_tag => 0, replay => 0, get_new => 0, get_delta => 0, | |
103 | simple_changeset => 0, import_or_tag => 0 | |
104 | ); | |
b779d5f0 ML |
105 | |
106 | my %rptags = (); # my reverse private tags | |
107 | # to map a SHA1 to a commitid | |
2777ef76 | 108 | my $TLA = $ENV{'ARCH_CLIENT'} || 'tla'; |
d3968363 | 109 | |
42f44b08 EW |
110 | sub do_abrowse { |
111 | my $stage = shift; | |
112 | while (my ($limit, $level) = each %arch_branches) { | |
113 | next unless $level == $stage; | |
114 | ||
115 | open ABROWSE, "$TLA abrowse -fkD --merges $limit |" | |
116 | or die "Problems with tla abrowse: $!"; | |
d3968363 | 117 | |
42f44b08 EW |
118 | my %ps = (); # the current one |
119 | my $lastseen = ''; | |
d3968363 | 120 | |
42f44b08 EW |
121 | while (<ABROWSE>) { |
122 | chomp; | |
d3968363 | 123 | |
42f44b08 EW |
124 | # first record padded w 8 spaces |
125 | if (s/^\s{8}\b//) { | |
126 | my ($id, $type) = split(m/\s+/, $_, 2); | |
127 | ||
128 | my %last_ps; | |
129 | # store the record we just captured | |
130 | if (%ps && !exists $psets{ $ps{id} }) { | |
131 | %last_ps = %ps; # break references | |
132 | push (@psets, \%last_ps); | |
133 | $psets{ $last_ps{id} } = \%last_ps; | |
134 | } | |
d3968363 | 135 | |
42f44b08 EW |
136 | my $branch = extract_versionname($id); |
137 | %ps = ( id => $id, branch => $branch ); | |
138 | if (%last_ps && ($last_ps{branch} eq $branch)) { | |
139 | $ps{parent_id} = $last_ps{id}; | |
140 | } | |
141 | ||
142 | $arch_branches{$branch} = 1; | |
143 | $lastseen = 'id'; | |
144 | ||
145 | # deal with types (should work with baz or tla): | |
146 | if ($type =~ m/\(.*changeset\)/) { | |
147 | $ps{type} = 's'; | |
148 | } elsif ($type =~ /\(.*import\)/) { | |
149 | $ps{type} = 'i'; | |
6df896b5 | 150 | } elsif ($type =~ m/\(tag.*?(\S+\@\S+).*?\)/) { |
42f44b08 EW |
151 | $ps{type} = 't'; |
152 | # read which revision we've tagged when we parse the log | |
6df896b5 | 153 | $ps{tag} = $1; |
42f44b08 EW |
154 | } else { |
155 | warn "Unknown type $type"; | |
156 | } | |
157 | ||
158 | $arch_branches{$branch} = 1; | |
159 | $lastseen = 'id'; | |
160 | } elsif (s/^\s{10}//) { | |
161 | # 10 leading spaces or more | |
162 | # indicate commit metadata | |
163 | ||
164 | # date | |
165 | if ($lastseen eq 'id' && m/^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d)/){ | |
166 | $ps{date} = $1; | |
167 | $lastseen = 'date'; | |
168 | } elsif ($_ eq 'merges in:') { | |
169 | $ps{merges} = []; | |
170 | $lastseen = 'merges'; | |
171 | } elsif ($lastseen eq 'merges' && s/^\s{2}//) { | |
172 | my $id = $_; | |
173 | push (@{$ps{merges}}, $id); | |
174 | ||
175 | # aggressive branch finding: | |
176 | if ($opt_D) { | |
177 | my $branch = extract_versionname($id); | |
178 | my $repo = extract_reponame($branch); | |
179 | ||
180 | if (archive_reachable($repo) && | |
181 | !defined $arch_branches{$branch}) { | |
182 | $arch_branches{$branch} = $stage + 1; | |
183 | } | |
184 | } | |
185 | } else { | |
186 | warn "more metadata after merges!?: $_\n" unless /^\s*$/; | |
d3968363 | 187 | } |
d3968363 | 188 | } |
d3968363 | 189 | } |
d3968363 | 190 | |
42f44b08 EW |
191 | if (%ps && !exists $psets{ $ps{id} }) { |
192 | my %temp = %ps; # break references | |
193 | if (@psets && $psets[$#psets]{branch} eq $ps{branch}) { | |
194 | $temp{parent_id} = $psets[$#psets]{id}; | |
195 | } | |
196 | push (@psets, \%temp); | |
197 | $psets{ $temp{id} } = \%temp; | |
198 | } | |
199 | ||
200 | close ABROWSE or die "$TLA abrowse failed on $limit\n"; | |
201 | } | |
d3968363 ML |
202 | } # end foreach $root |
203 | ||
42f44b08 EW |
204 | do_abrowse(1); |
205 | my $depth = 2; | |
206 | $opt_D ||= 0; | |
207 | while ($depth <= $opt_D) { | |
208 | do_abrowse($depth); | |
209 | $depth++; | |
210 | } | |
211 | ||
d3968363 | 212 | ## Order patches by time |
42f44b08 EW |
213 | # FIXME see if we can find a more optimal way to do this by graphing |
214 | # the ancestry data and walking it, that way we won't have to rely on | |
215 | # client-supplied dates | |
d3968363 ML |
216 | @psets = sort {$a->{date}.$b->{id} cmp $b->{date}.$b->{id}} @psets; |
217 | ||
218 | #print Dumper \@psets; | |
219 | ||
220 | ## | |
221 | ## TODO cleanup irrelevant patches | |
222 | ## and put an initial import | |
223 | ## or a full tag | |
3292ae47 | 224 | my $import = 0; |
1d4710d0 | 225 | unless (-d $git_dir) { # initial import |
d3968363 ML |
226 | if ($psets[0]{type} eq 'i' || $psets[0]{type} eq 't') { |
227 | print "Starting import from $psets[0]{id}\n"; | |
3292ae47 ML |
228 | `git-init-db`; |
229 | die $! if $?; | |
230 | $import = 1; | |
d3968363 ML |
231 | } else { |
232 | die "Need to start from an import or a tag -- cannot use $psets[0]{id}"; | |
233 | } | |
b779d5f0 ML |
234 | } else { # progressing an import |
235 | # load the rptags | |
42f44b08 | 236 | opendir(DIR, $ptag_dir) |
b779d5f0 ML |
237 | || die "can't opendir: $!"; |
238 | while (my $file = readdir(DIR)) { | |
a7fb51d3 EW |
239 | # skip non-interesting-files |
240 | next unless -f "$ptag_dir/$file"; | |
241 | ||
242 | # convert first '--' to '/' from old git-archimport to use | |
243 | # as an archivename/c--b--v private tag | |
244 | if ($file !~ m!,!) { | |
245 | my $oldfile = $file; | |
246 | $file =~ s!--!,!; | |
247 | print STDERR "converting old tag $oldfile to $file\n"; | |
248 | rename("$ptag_dir/$oldfile", "$ptag_dir/$file") or die $!; | |
249 | } | |
b779d5f0 ML |
250 | my $sha = ptag($file); |
251 | chomp $sha; | |
b779d5f0 ML |
252 | $rptags{$sha} = $file; |
253 | } | |
254 | closedir DIR; | |
d3968363 ML |
255 | } |
256 | ||
3292ae47 | 257 | # process patchsets |
22ff00fc EW |
258 | # extract the Arch repository name (Arch "archive" in Arch-speak) |
259 | sub extract_reponame { | |
260 | my $fq_cvbr = shift; # archivename/[[[[category]branch]version]revision] | |
261 | return (split(/\//, $fq_cvbr))[0]; | |
262 | } | |
263 | ||
264 | sub extract_versionname { | |
265 | my $name = shift; | |
266 | $name =~ s/--(?:patch|version(?:fix)?|base)-\d+$//; | |
267 | return $name; | |
268 | } | |
d3968363 | 269 | |
22ff00fc EW |
270 | # convert a fully-qualified revision or version to a unique dirname: |
271 | # normalperson@yhbt.net-05/mpd--uclinux--1--patch-2 | |
272 | # becomes: normalperson@yhbt.net-05,mpd--uclinux--1 | |
273 | # | |
274 | # the git notion of a branch is closer to | |
275 | # archive/category--branch--version than archive/category--branch, so we | |
276 | # use this to convert to git branch names. | |
277 | # Also, keep archive names but replace '/' with ',' since it won't require | |
278 | # subdirectories, and is safer than swapping '--' which could confuse | |
279 | # reverse-mapping when dealing with bastard branches that | |
280 | # are just archive/category--version (no --branch) | |
281 | sub tree_dirname { | |
282 | my $revision = shift; | |
283 | my $name = extract_versionname($revision); | |
284 | $name =~ s#/#,#; | |
285 | return $name; | |
286 | } | |
287 | ||
fee3365f ML |
288 | # old versions of git-archimport just use the <category--branch> part: |
289 | sub old_style_branchname { | |
290 | my $id = shift; | |
291 | my $ret = safe_pipe_capture($TLA,'parse-package-name','-p',$id); | |
292 | chomp $ret; | |
293 | return $ret; | |
294 | } | |
295 | ||
296 | *git_branchname = $opt_o ? *old_style_branchname : *tree_dirname; | |
22ff00fc | 297 | |
3e525e67 EW |
298 | sub process_patchset_accurate { |
299 | my $ps = shift; | |
300 | ||
301 | # switch to that branch if we're not already in that branch: | |
302 | if (-e "$git_dir/refs/heads/$ps->{branch}") { | |
303 | system('git-checkout','-f',$ps->{branch}) == 0 or die "$! $?\n"; | |
d3968363 | 304 | |
3e525e67 EW |
305 | # remove any old stuff that got leftover: |
306 | my $rm = safe_pipe_capture('git-ls-files','--others','-z'); | |
307 | rmtree(split(/\0/,$rm)) if $rm; | |
3292ae47 | 308 | } |
3e525e67 EW |
309 | |
310 | # Apply the import/changeset/merge into the working tree | |
311 | my $dir = sync_to_ps($ps); | |
312 | # read the new log entry: | |
313 | my @commitlog = safe_pipe_capture($TLA,'cat-log','-d',$dir,$ps->{id}); | |
314 | die "Error in cat-log: $!" if $?; | |
315 | chomp @commitlog; | |
316 | ||
317 | # grab variables we want from the log, new fields get added to $ps: | |
318 | # (author, date, email, summary, message body ...) | |
319 | parselog($ps, \@commitlog); | |
320 | ||
321 | if ($ps->{id} =~ /--base-0$/ && $ps->{id} ne $psets[0]{id}) { | |
322 | # this should work when importing continuations | |
323 | if ($ps->{tag} && (my $branchpoint = eval { ptag($ps->{tag}) })) { | |
324 | ||
325 | # find where we are supposed to branch from | |
326 | system('git-checkout','-f','-b',$ps->{branch}, | |
327 | $branchpoint) == 0 or die "$! $?\n"; | |
328 | ||
329 | # remove any old stuff that got leftover: | |
330 | my $rm = safe_pipe_capture('git-ls-files','--others','-z'); | |
331 | rmtree(split(/\0/,$rm)) if $rm; | |
3292ae47 | 332 | |
3e525e67 EW |
333 | # If we trust Arch with the fact that this is just |
334 | # a tag, and it does not affect the state of the tree | |
335 | # then we just tag and move on | |
336 | tag($ps->{id}, $branchpoint); | |
337 | ptag($ps->{id}, $branchpoint); | |
338 | print " * Tagged $ps->{id} at $branchpoint\n"; | |
339 | return 0; | |
340 | } else { | |
341 | warn "Tagging from unknown id unsupported\n" if $ps->{tag}; | |
342 | } | |
343 | # allow multiple bases/imports here since Arch supports cherry-picks | |
344 | # from unrelated trees | |
345 | } | |
346 | ||
347 | # update the index with all the changes we got | |
348 | system('git-ls-files --others -z | '. | |
349 | 'git-update-index --add -z --stdin') == 0 or die "$! $?\n"; | |
350 | system('git-ls-files --deleted -z | '. | |
351 | 'git-update-index --remove -z --stdin') == 0 or die "$! $?\n"; | |
352 | system('git-ls-files -z | '. | |
353 | 'git-update-index -z --stdin') == 0 or die "$! $?\n"; | |
354 | return 1; | |
355 | } | |
37f15d50 | 356 | |
3e525e67 EW |
357 | # the native changeset processing strategy. This is very fast, but |
358 | # does not handle permissions or any renames involving directories | |
359 | sub process_patchset_fast { | |
360 | my $ps = shift; | |
d3968363 ML |
361 | # |
362 | # create the branch if needed | |
363 | # | |
3292ae47 ML |
364 | if ($ps->{type} eq 'i' && !$import) { |
365 | die "Should not have more than one 'Initial import' per GIT import: $ps->{id}"; | |
d3968363 ML |
366 | } |
367 | ||
3292ae47 | 368 | unless ($import) { # skip for import |
1d4710d0 | 369 | if ( -e "$git_dir/refs/heads/$ps->{branch}") { |
d3968363 | 370 | # we know about this branch |
f88961a8 | 371 | system('git-checkout',$ps->{branch}); |
d3968363 ML |
372 | } else { |
373 | # new branch! we need to verify a few things | |
374 | die "Branch on a non-tag!" unless $ps->{type} eq 't'; | |
375 | my $branchpoint = ptag($ps->{tag}); | |
376 | die "Tagging from unknown id unsupported: $ps->{tag}" | |
377 | unless $branchpoint; | |
378 | ||
379 | # find where we are supposed to branch from | |
f88961a8 | 380 | system('git-checkout','-b',$ps->{branch},$branchpoint); |
52586ecb ML |
381 | |
382 | # If we trust Arch with the fact that this is just | |
383 | # a tag, and it does not affect the state of the tree | |
384 | # then we just tag and move on | |
385 | tag($ps->{id}, $branchpoint); | |
386 | ptag($ps->{id}, $branchpoint); | |
387 | print " * Tagged $ps->{id} at $branchpoint\n"; | |
3e525e67 | 388 | return 0; |
d3968363 ML |
389 | } |
390 | die $! if $?; | |
391 | } | |
392 | ||
d3968363 ML |
393 | # |
394 | # Apply the import/changeset/merge into the working tree | |
395 | # | |
396 | if ($ps->{type} eq 'i' || $ps->{type} eq 't') { | |
d3968363 | 397 | apply_import($ps) or die $!; |
3e525e67 | 398 | $stats{import_or_tag}++; |
3292ae47 | 399 | $import=0; |
d3968363 ML |
400 | } elsif ($ps->{type} eq 's') { |
401 | apply_cset($ps); | |
3e525e67 | 402 | $stats{simple_changeset}++; |
d3968363 ML |
403 | } |
404 | ||
405 | # | |
406 | # prepare update git's index, based on what arch knows | |
407 | # about the pset, resolve parents, etc | |
408 | # | |
d3968363 | 409 | |
6df896b5 | 410 | my @commitlog = safe_pipe_capture($TLA,'cat-archive-log',$ps->{id}); |
d3968363 ML |
411 | die "Error in cat-archive-log: $!" if $?; |
412 | ||
6df896b5 | 413 | parselog($ps,\@commitlog); |
d3968363 ML |
414 | |
415 | # imports don't give us good info | |
416 | # on added files. Shame on them | |
6df896b5 EW |
417 | if ($ps->{type} eq 'i' || $ps->{type} eq 't') { |
418 | system('git-ls-files --others -z | '. | |
419 | 'git-update-index --add -z --stdin') == 0 or die "$! $?\n"; | |
420 | system('git-ls-files --deleted -z | '. | |
421 | 'git-update-index --remove -z --stdin') == 0 or die "$! $?\n"; | |
d3968363 ML |
422 | } |
423 | ||
6df896b5 EW |
424 | # TODO: handle removed_directories and renamed_directories: |
425 | ||
426 | if (my $add = $ps->{new_files}) { | |
d3968363 ML |
427 | while (@$add) { |
428 | my @slice = splice(@$add, 0, 100); | |
6df896b5 EW |
429 | system('git-update-index','--add','--',@slice) == 0 or |
430 | die "Error in git-update-index --add: $! $?\n"; | |
d3968363 ML |
431 | } |
432 | } | |
6df896b5 EW |
433 | |
434 | if (my $del = $ps->{removed_files}) { | |
435 | unlink @$del; | |
d3968363 ML |
436 | while (@$del) { |
437 | my @slice = splice(@$del, 0, 100); | |
6df896b5 EW |
438 | system('git-update-index','--remove','--',@slice) == 0 or |
439 | die "Error in git-update-index --remove: $! $?\n"; | |
d3968363 ML |
440 | } |
441 | } | |
6df896b5 EW |
442 | |
443 | if (my $ren = $ps->{renamed_files}) { # renamed | |
d3968363 ML |
444 | if (@$ren % 2) { |
445 | die "Odd number of entries in rename!?"; | |
446 | } | |
6df896b5 | 447 | |
d3968363 | 448 | while (@$ren) { |
6df896b5 EW |
449 | my $from = shift @$ren; |
450 | my $to = shift @$ren; | |
d3968363 ML |
451 | |
452 | unless (-d dirname($to)) { | |
453 | mkpath(dirname($to)); # will die on err | |
454 | } | |
3e525e67 | 455 | # print "moving $from $to"; |
6df896b5 EW |
456 | rename($from, $to) or die "Error renaming '$from' '$to': $!\n"; |
457 | system('git-update-index','--remove','--',$from) == 0 or | |
458 | die "Error in git-update-index --remove: $! $?\n"; | |
459 | system('git-update-index','--add','--',$to) == 0 or | |
460 | die "Error in git-update-index --add: $! $?\n"; | |
d3968363 | 461 | } |
d3968363 | 462 | } |
6df896b5 EW |
463 | |
464 | if (my $mod = $ps->{modified_files}) { | |
d3968363 ML |
465 | while (@$mod) { |
466 | my @slice = splice(@$mod, 0, 100); | |
6df896b5 EW |
467 | system('git-update-index','--',@slice) == 0 or |
468 | die "Error in git-update-index: $! $?\n"; | |
d3968363 ML |
469 | } |
470 | } | |
3e525e67 EW |
471 | return 1; # we successfully applied the changeset |
472 | } | |
473 | ||
474 | if ($opt_f) { | |
475 | print "Will import patchsets using the fast strategy\n", | |
476 | "Renamed directories and permission changes will be missed\n"; | |
477 | *process_patchset = *process_patchset_fast; | |
478 | } else { | |
479 | print "Using the default (accurate) import strategy.\n", | |
480 | "Things may be a bit slow\n"; | |
481 | *process_patchset = *process_patchset_accurate; | |
482 | } | |
6df896b5 | 483 | |
3e525e67 EW |
484 | foreach my $ps (@psets) { |
485 | # process patchsets | |
486 | $ps->{branch} = git_branchname($ps->{id}); | |
487 | ||
488 | # | |
489 | # ensure we have a clean state | |
490 | # | |
491 | if (my $dirty = `git-diff-files`) { | |
492 | die "Unclean tree when about to process $ps->{id} " . | |
493 | " - did we fail to commit cleanly before?\n$dirty"; | |
494 | } | |
495 | die $! if $?; | |
496 | ||
497 | # | |
498 | # skip commits already in repo | |
499 | # | |
500 | if (ptag($ps->{id})) { | |
501 | $opt_v && print " * Skipping already imported: $ps->{id}\n"; | |
10945e00 | 502 | next; |
3e525e67 EW |
503 | } |
504 | ||
505 | print " * Starting to work on $ps->{id}\n"; | |
506 | ||
507 | process_patchset($ps) or next; | |
508 | ||
215a7ad1 | 509 | # warn "errors when running git-update-index! $!"; |
3e525e67 | 510 | my $tree = `git-write-tree`; |
d3968363 ML |
511 | die "cannot write tree $!" if $?; |
512 | chomp $tree; | |
d3968363 ML |
513 | |
514 | # | |
515 | # Who's your daddy? | |
516 | # | |
517 | my @par; | |
1d4710d0 | 518 | if ( -e "$git_dir/refs/heads/$ps->{branch}") { |
f88961a8 | 519 | if (open HEAD, "<","$git_dir/refs/heads/$ps->{branch}") { |
d3968363 ML |
520 | my $p = <HEAD>; |
521 | close HEAD; | |
522 | chomp $p; | |
523 | push @par, '-p', $p; | |
524 | } else { | |
525 | if ($ps->{type} eq 's') { | |
526 | warn "Could not find the right head for the branch $ps->{branch}"; | |
527 | } | |
528 | } | |
529 | } | |
530 | ||
b779d5f0 ML |
531 | if ($ps->{merges}) { |
532 | push @par, find_parents($ps); | |
533 | } | |
d3968363 ML |
534 | |
535 | # | |
536 | # Commit, tag and clean state | |
537 | # | |
538 | $ENV{TZ} = 'GMT'; | |
539 | $ENV{GIT_AUTHOR_NAME} = $ps->{author}; | |
540 | $ENV{GIT_AUTHOR_EMAIL} = $ps->{email}; | |
541 | $ENV{GIT_AUTHOR_DATE} = $ps->{date}; | |
542 | $ENV{GIT_COMMITTER_NAME} = $ps->{author}; | |
543 | $ENV{GIT_COMMITTER_EMAIL} = $ps->{email}; | |
544 | $ENV{GIT_COMMITTER_DATE} = $ps->{date}; | |
545 | ||
6df896b5 | 546 | my $pid = open2(*READER, *WRITER,'git-commit-tree',$tree,@par) |
d3968363 | 547 | or die $!; |
6df896b5 EW |
548 | print WRITER $ps->{summary},"\n"; |
549 | print WRITER $ps->{message},"\n"; | |
550 | ||
551 | # make it easy to backtrack and figure out which Arch revision this was: | |
552 | print WRITER 'git-archimport-id: ',$ps->{id},"\n"; | |
553 | ||
d3968363 ML |
554 | close WRITER; |
555 | my $commitid = <READER>; # read | |
556 | chomp $commitid; | |
557 | close READER; | |
558 | waitpid $pid,0; # close; | |
559 | ||
560 | if (length $commitid != 40) { | |
561 | die "Something went wrong with the commit! $! $commitid"; | |
562 | } | |
563 | # | |
564 | # Update the branch | |
565 | # | |
f88961a8 | 566 | open HEAD, ">","$git_dir/refs/heads/$ps->{branch}"; |
d3968363 ML |
567 | print HEAD $commitid; |
568 | close HEAD; | |
8366a10a | 569 | system('git-update-ref', 'HEAD', "$ps->{branch}"); |
d3968363 ML |
570 | |
571 | # tag accordingly | |
572 | ptag($ps->{id}, $commitid); # private tag | |
573 | if ($opt_T || $ps->{type} eq 't' || $ps->{type} eq 'i') { | |
574 | tag($ps->{id}, $commitid); | |
575 | } | |
576 | print " * Committed $ps->{id}\n"; | |
577 | print " + tree $tree\n"; | |
578 | print " + commit $commitid\n"; | |
b779d5f0 | 579 | $opt_v && print " + commit date is $ps->{date} \n"; |
f88961a8 | 580 | $opt_v && print " + parents: ",join(' ',@par),"\n"; |
3e525e67 EW |
581 | } |
582 | ||
583 | if ($opt_v) { | |
584 | foreach (sort keys %stats) { | |
585 | print" $_: $stats{$_}\n"; | |
586 | } | |
587 | } | |
588 | exit 0; | |
589 | ||
590 | # used by the accurate strategy: | |
591 | sub sync_to_ps { | |
592 | my $ps = shift; | |
593 | my $tree_dir = $tmp.'/'.tree_dirname($ps->{id}); | |
594 | ||
595 | $opt_v && print "sync_to_ps($ps->{id}) method: "; | |
596 | ||
597 | if (-d $tree_dir) { | |
598 | if ($ps->{type} eq 't') { | |
599 | $opt_v && print "get (tag)\n"; | |
600 | # looks like a tag-only or (worse,) a mixed tags/changeset branch, | |
601 | # can't rely on replay to work correctly on these | |
602 | rmtree($tree_dir); | |
603 | safe_pipe_capture($TLA,'get','--no-pristine',$ps->{id},$tree_dir); | |
604 | $stats{get_tag}++; | |
605 | } else { | |
606 | my $tree_id = arch_tree_id($tree_dir); | |
607 | if ($ps->{parent_id} && ($ps->{parent_id} eq $tree_id)) { | |
608 | # the common case (hopefully) | |
609 | $opt_v && print "replay\n"; | |
610 | safe_pipe_capture($TLA,'replay','-d',$tree_dir,$ps->{id}); | |
611 | $stats{replay}++; | |
612 | } else { | |
613 | # getting one tree is usually faster than getting two trees | |
614 | # and applying the delta ... | |
615 | rmtree($tree_dir); | |
616 | $opt_v && print "apply-delta\n"; | |
617 | safe_pipe_capture($TLA,'get','--no-pristine', | |
618 | $ps->{id},$tree_dir); | |
619 | $stats{get_delta}++; | |
620 | } | |
621 | } | |
622 | } else { | |
623 | # new branch work | |
624 | $opt_v && print "get (new tree)\n"; | |
625 | safe_pipe_capture($TLA,'get','--no-pristine',$ps->{id},$tree_dir); | |
626 | $stats{get_new}++; | |
627 | } | |
628 | ||
629 | # added -I flag to rsync since we're going to fast! AIEEEEE!!!! | |
630 | system('rsync','-aI','--delete','--exclude',$git_dir, | |
631 | # '--exclude','.arch-inventory', | |
632 | '--exclude','.arch-ids','--exclude','{arch}', | |
633 | '--exclude','+*','--exclude',',*', | |
634 | "$tree_dir/",'./') == 0 or die "Cannot rsync $tree_dir: $! $?"; | |
635 | return $tree_dir; | |
d3968363 ML |
636 | } |
637 | ||
d3968363 ML |
638 | sub apply_import { |
639 | my $ps = shift; | |
22ff00fc | 640 | my $bname = git_branchname($ps->{id}); |
d3968363 | 641 | |
f88961a8 | 642 | mkpath($tmp); |
d3968363 | 643 | |
f88961a8 | 644 | safe_pipe_capture($TLA,'get','-s','--no-pristine',$ps->{id},"$tmp/import"); |
d3968363 | 645 | die "Cannot get import: $!" if $?; |
f88961a8 EW |
646 | system('rsync','-aI','--delete', '--exclude',$git_dir, |
647 | '--exclude','.arch-ids','--exclude','{arch}', | |
648 | "$tmp/import/", './'); | |
d3968363 ML |
649 | die "Cannot rsync import:$!" if $?; |
650 | ||
f88961a8 | 651 | rmtree("$tmp/import"); |
d3968363 ML |
652 | die "Cannot remove tempdir: $!" if $?; |
653 | ||
654 | ||
655 | return 1; | |
656 | } | |
657 | ||
658 | sub apply_cset { | |
659 | my $ps = shift; | |
660 | ||
f88961a8 | 661 | mkpath($tmp); |
d3968363 ML |
662 | |
663 | # get the changeset | |
f88961a8 | 664 | safe_pipe_capture($TLA,'get-changeset',$ps->{id},"$tmp/changeset"); |
d3968363 ML |
665 | die "Cannot get changeset: $!" if $?; |
666 | ||
667 | # apply patches | |
668 | if (`find $tmp/changeset/patches -type f -name '*.patch'`) { | |
669 | # this can be sped up considerably by doing | |
670 | # (find | xargs cat) | patch | |
671 | # but that cna get mucked up by patches | |
672 | # with missing trailing newlines or the standard | |
673 | # 'missing newline' flag in the patch - possibly | |
674 | # produced with an old/buggy diff. | |
675 | # slow and safe, we invoke patch once per patchfile | |
676 | `find $tmp/changeset/patches -type f -name '*.patch' -print0 | grep -zv '{arch}' | xargs -iFILE -0 --no-run-if-empty patch -p1 --forward -iFILE`; | |
677 | die "Problem applying patches! $!" if $?; | |
678 | } | |
679 | ||
680 | # apply changed binary files | |
681 | if (my @modified = `find $tmp/changeset/patches -type f -name '*.modified'`) { | |
682 | foreach my $mod (@modified) { | |
683 | chomp $mod; | |
684 | my $orig = $mod; | |
685 | $orig =~ s/\.modified$//; # lazy | |
686 | $orig =~ s!^\Q$tmp\E/changeset/patches/!!; | |
687 | #print "rsync -p '$mod' '$orig'"; | |
f88961a8 | 688 | system('rsync','-p',$mod,"./$orig"); |
d3968363 ML |
689 | die "Problem applying binary changes! $!" if $?; |
690 | } | |
691 | } | |
692 | ||
693 | # bring in new files | |
f88961a8 EW |
694 | system('rsync','-aI','--exclude',$git_dir, |
695 | '--exclude','.arch-ids', | |
696 | '--exclude', '{arch}', | |
697 | "$tmp/changeset/new-files-archive/",'./'); | |
d3968363 ML |
698 | |
699 | # deleted files are hinted from the commitlog processing | |
700 | ||
f88961a8 | 701 | rmtree("$tmp/changeset"); |
d3968363 ML |
702 | } |
703 | ||
704 | ||
705 | # =for reference | |
6df896b5 EW |
706 | # notes: *-files/-directories keys cannot have spaces, they're always |
707 | # pika-escaped. Everything after the first newline | |
708 | # A log entry looks like: | |
d3968363 ML |
709 | # Revision: moodle-org--moodle--1.3.3--patch-15 |
710 | # Archive: arch-eduforge@catalyst.net.nz--2004 | |
711 | # Creator: Penny Leach <penny@catalyst.net.nz> | |
712 | # Date: Wed May 25 14:15:34 NZST 2005 | |
713 | # Standard-date: 2005-05-25 02:15:34 GMT | |
714 | # New-files: lang/de/.arch-ids/block_glossary_random.php.id | |
715 | # lang/de/.arch-ids/block_html.php.id | |
716 | # New-directories: lang/de/help/questionnaire | |
717 | # lang/de/help/questionnaire/.arch-ids | |
718 | # Renamed-files: .arch-ids/db_sears.sql.id db/.arch-ids/db_sears.sql.id | |
719 | # db_sears.sql db/db_sears.sql | |
720 | # Removed-files: lang/be/docs/.arch-ids/release.html.id | |
721 | # lang/be/docs/.arch-ids/releaseold.html.id | |
722 | # Modified-files: admin/cron.php admin/delete.php | |
723 | # admin/editor.html backup/lib.php backup/restore.php | |
724 | # New-patches: arch-eduforge@catalyst.net.nz--2004/moodle-org--moodle--1.3.3--patch-15 | |
725 | # Summary: Updating to latest from MOODLE_14_STABLE (1.4.5+) | |
6df896b5 | 726 | # summary can be multiline with a leading space just like the above fields |
d3968363 ML |
727 | # Keywords: |
728 | # | |
729 | # Updating yadda tadda tadda madda | |
730 | sub parselog { | |
6df896b5 EW |
731 | my ($ps, $log) = @_; |
732 | my $key = undef; | |
733 | ||
734 | # headers we want that contain filenames: | |
735 | my %want_headers = ( | |
736 | new_files => 1, | |
737 | modified_files => 1, | |
738 | renamed_files => 1, | |
739 | renamed_directories => 1, | |
740 | removed_files => 1, | |
741 | removed_directories => 1, | |
742 | ); | |
d3968363 | 743 | |
6df896b5 EW |
744 | chomp (@$log); |
745 | while ($_ = shift @$log) { | |
746 | if (/^Continuation-of:\s*(.*)/) { | |
747 | $ps->{tag} = $1; | |
748 | $key = undef; | |
749 | } elsif (/^Summary:\s*(.*)$/ ) { | |
750 | # summary can be multiline as long as it has a leading space | |
751 | $ps->{summary} = [ $1 ]; | |
752 | $key = 'summary'; | |
753 | } elsif (/^Creator: (.*)\s*<([^\>]+)>/) { | |
754 | $ps->{author} = $1; | |
755 | $ps->{email} = $2; | |
756 | $key = undef; | |
757 | # any *-files or *-directories can be read here: | |
758 | } elsif (/^([A-Z][a-z\-]+):\s*(.*)$/) { | |
759 | my $val = $2; | |
760 | $key = lc $1; | |
761 | $key =~ tr/-/_/; # too lazy to quote :P | |
762 | if ($want_headers{$key}) { | |
763 | push @{$ps->{$key}}, split(/\s+/, $val); | |
764 | } else { | |
765 | $key = undef; | |
766 | } | |
767 | } elsif (/^$/) { | |
768 | last; # remainder of @$log that didn't get shifted off is message | |
769 | } elsif ($key) { | |
770 | if (/^\s+(.*)$/) { | |
771 | if ($key eq 'summary') { | |
772 | push @{$ps->{$key}}, $1; | |
773 | } else { # files/directories: | |
774 | push @{$ps->{$key}}, split(/\s+/, $1); | |
775 | } | |
776 | } else { | |
777 | $key = undef; | |
778 | } | |
779 | } | |
d3968363 | 780 | } |
6df896b5 EW |
781 | |
782 | # post-processing: | |
783 | $ps->{summary} = join("\n",@{$ps->{summary}})."\n"; | |
784 | $ps->{message} = join("\n",@$log); | |
d3968363 | 785 | |
6df896b5 EW |
786 | # skip Arch control files, unescape pika-escaped files |
787 | foreach my $k (keys %want_headers) { | |
788 | next unless (defined $ps->{$k}); | |
6e33101a | 789 | my @tmp = (); |
6df896b5 EW |
790 | foreach my $t (@{$ps->{$k}}) { |
791 | next unless length ($t); | |
792 | next if $t =~ m!\{arch\}/!; | |
793 | next if $t =~ m!\.arch-ids/!; | |
794 | # should we skip this? | |
795 | next if $t =~ m!\.arch-inventory$!; | |
f84f9d38 ML |
796 | # tla cat-archive-log will give us filenames with spaces as file\(sp)name - why? |
797 | # we can assume that any filename with \ indicates some pika escaping that we want to get rid of. | |
6df896b5 | 798 | if ($t =~ /\\/ ){ |
f88961a8 | 799 | $t = (safe_pipe_capture($TLA,'escape','--unescaped',$t))[0]; |
f84f9d38 | 800 | } |
6df896b5 | 801 | push @tmp, $t; |
d3968363 | 802 | } |
6e33101a | 803 | $ps->{$k} = \@tmp; |
d3968363 | 804 | } |
d3968363 ML |
805 | } |
806 | ||
807 | # write/read a tag | |
808 | sub tag { | |
809 | my ($tag, $commit) = @_; | |
a7fb51d3 | 810 | |
fee3365f ML |
811 | if ($opt_o) { |
812 | $tag =~ s|/|--|g; | |
813 | } else { | |
814 | # don't use subdirs for tags yet, it could screw up other porcelains | |
815 | $tag =~ s|/|,|g; | |
816 | } | |
d3968363 ML |
817 | |
818 | if ($commit) { | |
a7fb51d3 | 819 | open(C,">","$git_dir/refs/tags/$tag") |
d3968363 ML |
820 | or die "Cannot create tag $tag: $!\n"; |
821 | print C "$commit\n" | |
822 | or die "Cannot write tag $tag: $!\n"; | |
823 | close(C) | |
824 | or die "Cannot write tag $tag: $!\n"; | |
a7fb51d3 | 825 | print " * Created tag '$tag' on '$commit'\n" if $opt_v; |
d3968363 | 826 | } else { # read |
a7fb51d3 | 827 | open(C,"<","$git_dir/refs/tags/$tag") |
d3968363 ML |
828 | or die "Cannot read tag $tag: $!\n"; |
829 | $commit = <C>; | |
830 | chomp $commit; | |
831 | die "Error reading tag $tag: $!\n" unless length $commit == 40; | |
832 | close(C) | |
833 | or die "Cannot read tag $tag: $!\n"; | |
834 | return $commit; | |
835 | } | |
836 | } | |
837 | ||
838 | # write/read a private tag | |
839 | # reads fail softly if the tag isn't there | |
840 | sub ptag { | |
841 | my ($tag, $commit) = @_; | |
a7fb51d3 EW |
842 | |
843 | # don't use subdirs for tags yet, it could screw up other porcelains | |
844 | $tag =~ s|/|,|g; | |
d3968363 | 845 | |
a7fb51d3 EW |
846 | my $tag_file = "$ptag_dir/$tag"; |
847 | my $tag_branch_dir = dirname($tag_file); | |
848 | mkpath($tag_branch_dir) unless (-d $tag_branch_dir); | |
d3968363 ML |
849 | |
850 | if ($commit) { # write | |
a7fb51d3 | 851 | open(C,">",$tag_file) |
d3968363 ML |
852 | or die "Cannot create tag $tag: $!\n"; |
853 | print C "$commit\n" | |
854 | or die "Cannot write tag $tag: $!\n"; | |
855 | close(C) | |
856 | or die "Cannot write tag $tag: $!\n"; | |
b779d5f0 ML |
857 | $rptags{$commit} = $tag |
858 | unless $tag =~ m/--base-0$/; | |
d3968363 ML |
859 | } else { # read |
860 | # if the tag isn't there, return 0 | |
a7fb51d3 | 861 | unless ( -s $tag_file) { |
d3968363 ML |
862 | return 0; |
863 | } | |
a7fb51d3 | 864 | open(C,"<",$tag_file) |
d3968363 ML |
865 | or die "Cannot read tag $tag: $!\n"; |
866 | $commit = <C>; | |
867 | chomp $commit; | |
868 | die "Error reading tag $tag: $!\n" unless length $commit == 40; | |
869 | close(C) | |
870 | or die "Cannot read tag $tag: $!\n"; | |
b779d5f0 ML |
871 | unless (defined $rptags{$commit}) { |
872 | $rptags{$commit} = $tag; | |
873 | } | |
d3968363 ML |
874 | return $commit; |
875 | } | |
876 | } | |
b779d5f0 ML |
877 | |
878 | sub find_parents { | |
879 | # | |
880 | # Identify what branches are merging into me | |
881 | # and whether we are fully merged | |
882 | # git-merge-base <headsha> <headsha> should tell | |
883 | # me what the base of the merge should be | |
884 | # | |
885 | my $ps = shift; | |
886 | ||
887 | my %branches; # holds an arrayref per branch | |
888 | # the arrayref contains a list of | |
889 | # merged patches between the base | |
890 | # of the merge and the current head | |
891 | ||
892 | my @parents; # parents found for this commit | |
893 | ||
894 | # simple loop to split the merges | |
895 | # per branch | |
896 | foreach my $merge (@{$ps->{merges}}) { | |
22ff00fc | 897 | my $branch = git_branchname($merge); |
b779d5f0 ML |
898 | unless (defined $branches{$branch} ){ |
899 | $branches{$branch} = []; | |
900 | } | |
901 | push @{$branches{$branch}}, $merge; | |
902 | } | |
903 | ||
904 | # | |
905 | # foreach branch find a merge base and walk it to the | |
906 | # head where we are, collecting the merged patchsets that | |
907 | # Arch has recorded. Keep that in @have | |
908 | # Compare that with the commits on the other branch | |
909 | # between merge-base and the tip of the branch (@need) | |
910 | # and see if we have a series of consecutive patches | |
911 | # starting from the merge base. The tip of the series | |
912 | # of consecutive patches merged is our new parent for | |
913 | # that branch. | |
914 | # | |
915 | foreach my $branch (keys %branches) { | |
37f15d50 ML |
916 | |
917 | # check that we actually know about the branch | |
918 | next unless -e "$git_dir/refs/heads/$branch"; | |
919 | ||
b779d5f0 | 920 | my $mergebase = `git-merge-base $branch $ps->{branch}`; |
9b626e75 EW |
921 | if ($?) { |
922 | # Don't die here, Arch supports one-way cherry-picking | |
923 | # between branches with no common base (or any relationship | |
924 | # at all beforehand) | |
925 | warn "Cannot find merge base for $branch and $ps->{branch}"; | |
926 | next; | |
927 | } | |
b779d5f0 ML |
928 | chomp $mergebase; |
929 | ||
930 | # now walk up to the mergepoint collecting what patches we have | |
931 | my $branchtip = git_rev_parse($ps->{branch}); | |
932 | my @ancestors = `git-rev-list --merge-order $branchtip ^$mergebase`; | |
933 | my %have; # collected merges this branch has | |
934 | foreach my $merge (@{$ps->{merges}}) { | |
935 | $have{$merge} = 1; | |
936 | } | |
937 | my %ancestorshave; | |
938 | foreach my $par (@ancestors) { | |
939 | $par = commitid2pset($par); | |
940 | if (defined $par->{merges}) { | |
941 | foreach my $merge (@{$par->{merges}}) { | |
942 | $ancestorshave{$merge}=1; | |
943 | } | |
944 | } | |
945 | } | |
946 | # print "++++ Merges in $ps->{id} are....\n"; | |
947 | # my @have = sort keys %have; print Dumper(\@have); | |
948 | ||
949 | # merge what we have with what ancestors have | |
950 | %have = (%have, %ancestorshave); | |
951 | ||
952 | # see what the remote branch has - these are the merges we | |
953 | # will want to have in a consecutive series from the mergebase | |
954 | my $otherbranchtip = git_rev_parse($branch); | |
955 | my @needraw = `git-rev-list --merge-order $otherbranchtip ^$mergebase`; | |
956 | my @need; | |
957 | foreach my $needps (@needraw) { # get the psets | |
958 | $needps = commitid2pset($needps); | |
959 | # git-rev-list will also | |
960 | # list commits merged in via earlier | |
961 | # merges. we are only interested in commits | |
962 | # from the branch we're looking at | |
963 | if ($branch eq $needps->{branch}) { | |
964 | push @need, $needps->{id}; | |
965 | } | |
966 | } | |
967 | ||
968 | # print "++++ Merges from $branch we want are....\n"; | |
969 | # print Dumper(\@need); | |
970 | ||
971 | my $newparent; | |
972 | while (my $needed_commit = pop @need) { | |
973 | if ($have{$needed_commit}) { | |
974 | $newparent = $needed_commit; | |
975 | } else { | |
976 | last; # break out of the while | |
977 | } | |
978 | } | |
979 | if ($newparent) { | |
980 | push @parents, $newparent; | |
981 | } | |
982 | ||
983 | ||
984 | } # end foreach branch | |
985 | ||
986 | # prune redundant parents | |
987 | my %parents; | |
988 | foreach my $p (@parents) { | |
989 | $parents{$p} = 1; | |
990 | } | |
991 | foreach my $p (@parents) { | |
992 | next unless exists $psets{$p}{merges}; | |
993 | next unless ref $psets{$p}{merges}; | |
994 | my @merges = @{$psets{$p}{merges}}; | |
995 | foreach my $merge (@merges) { | |
996 | if ($parents{$merge}) { | |
997 | delete $parents{$merge}; | |
998 | } | |
999 | } | |
1000 | } | |
42f44b08 | 1001 | |
f88961a8 EW |
1002 | @parents = (); |
1003 | foreach (keys %parents) { | |
1004 | push @parents, '-p', ptag($_); | |
1005 | } | |
b779d5f0 ML |
1006 | return @parents; |
1007 | } | |
1008 | ||
1009 | sub git_rev_parse { | |
1010 | my $name = shift; | |
1011 | my $val = `git-rev-parse $name`; | |
1012 | die "Error: git-rev-parse $name" if $?; | |
1013 | chomp $val; | |
1014 | return $val; | |
1015 | } | |
1016 | ||
1017 | # resolve a SHA1 to a known patchset | |
1018 | sub commitid2pset { | |
1019 | my $commitid = shift; | |
1020 | chomp $commitid; | |
1021 | my $name = $rptags{$commitid} | |
1022 | || die "Cannot find reverse tag mapping for $commitid"; | |
a7fb51d3 | 1023 | $name =~ s|,|/|; |
b779d5f0 ML |
1024 | my $ps = $psets{$name} |
1025 | || (print Dumper(sort keys %psets)) && die "Cannot find patchset for $name"; | |
1026 | return $ps; | |
1027 | } | |
2777ef76 | 1028 | |
42f44b08 | 1029 | |
2777ef76 EW |
1030 | # an alterative to `command` that allows input to be passed as an array |
1031 | # to work around shell problems with weird characters in arguments | |
1032 | sub safe_pipe_capture { | |
1033 | my @output; | |
1034 | if (my $pid = open my $child, '-|') { | |
1035 | @output = (<$child>); | |
1036 | close $child or die join(' ',@_).": $! $?"; | |
1037 | } else { | |
3e525e67 | 1038 | exec(@_) or die "$! $?"; # exec() can fail the executable can't be found |
2777ef76 EW |
1039 | } |
1040 | return wantarray ? @output : join('',@output); | |
1041 | } | |
1042 | ||
42f44b08 EW |
1043 | # `tla logs -rf -d <dir> | head -n1` or `baz tree-id <dir>` |
1044 | sub arch_tree_id { | |
1045 | my $dir = shift; | |
1046 | chomp( my $ret = (safe_pipe_capture($TLA,'logs','-rf','-d',$dir))[0] ); | |
1047 | return $ret; | |
1048 | } | |
1049 | ||
1050 | sub archive_reachable { | |
1051 | my $archive = shift; | |
1052 | return 1 if $reachable{$archive}; | |
1053 | return 0 if $unreachable{$archive}; | |
1054 | ||
1055 | if (system "$TLA whereis-archive $archive >/dev/null") { | |
1056 | if ($opt_a && (system($TLA,'register-archive', | |
1057 | "http://mirrors.sourcecontrol.net/$archive") == 0)) { | |
1058 | $reachable{$archive} = 1; | |
1059 | return 1; | |
1060 | } | |
1061 | print STDERR "Archive is unreachable: $archive\n"; | |
1062 | $unreachable{$archive} = 1; | |
1063 | return 0; | |
1064 | } else { | |
1065 | $reachable{$archive} = 1; | |
1066 | return 1; | |
1067 | } | |
1068 | } | |
2777ef76 | 1069 |