Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/bin/common-functions
blob: f255bb6f71a0709e61d97d82d183158c34f4f73d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
#!/bin/sh

# contains functions used by more than one script

# shellcheck disable=SC2039

if [ -z "${base_dir}" ]; then
  # just to make shellcheck happy
  . 'conf/default.conf'
fi

# find_pkgbuilds package repository git_repository git_revision mod_git_revision
# find the PKGBUILD and modification of $package from $repository
# sets $PKGBUILD and $PKGBUILD_mod

find_pkgbuilds() {

  local package="$1"
  local repository="$2"
  local git_repository="$3"
  local git_revision="$4"
  local mod_git_revision="$5"

  local repo_path
  eval 'repo_path="${repo_paths__'"${git_repository}"'}"'

  # TODO: remove, when FS#54696 closed
  local _perl_list_moreutils_repair_flag
  if [ "${package}" = 'perl-list-moreutils' ]; then
    _perl_list_moreutils_repair_flag='-r'
  fi

  PKGBUILD=$(
    git -C "${repo_path}" archive "${git_revision}" -- "${package}/repos/" 2> /dev/null | \
      tar -t 2> /dev/null | \
      grep "$(printf '^%s-.*/PKGBUILD' "$(str_to_regex "${package}/repos/${repository}")")" | \
      grep -v -- '-i686/PKGBUILD$' | \
      grep -v -- '[-/]\(staging\|testing\|unstable\)-[^/]\+/PKGBUILD$' | \
      sort ${_perl_list_moreutils_repair_flag} | \
      tail -n1
  )

  PKGBUILD_mod=$(
    git -C "${repo_paths__archlinux32}" archive "${mod_git_revision}" 2> /dev/null | \
      tar -t "${repository}/${package}/PKGBUILD" 2> /dev/null
  ) || true

  if [ -z "${PKGBUILD}" ] && \
    [ -z "${PKGBUILD_mod}" ]; then
    >&2 printf 'Neither PKGBUILD nor modification of PKGBUILD found for package "%s" from %s (%s), revisions %s and %s.\n' \
      "${package}" \
      "${repository}" \
      "${git_repository}" \
      "${git_revision}" \
      "${mod_git_revision}"
    return 1
  fi

}

# find_repository_with_commit commit
# find the repository which has $commit

find_repository_with_commit() {

  local repository

  for repository in ${repo_names}; do
    # shellcheck disable=SC2016
    if [ "$(eval git -C "$(printf '"${repo_paths__%s}"' "${repository}")" cat-file -t '"$1"' 2> /dev/null)" = "commit" ]; then
      echo "${repository}"
      return 0
    fi
  done
  >&2 printf 'find_repository_with_commit: Cannot find repository with commit "%s"\n' "$1"
  exit 1

}

# find_git_repository_to_package_repository repository
# find the git repository which tracks the package repository $repository

find_git_repository_to_package_repository() {

  local repository
  local package_repository
  local repo_path

  package_repository="$1"

  if [ "$1" = 'build-support' ]; then
    echo 'packages'
    return 0
  fi

  for repository in ${repo_names}; do
    if [ "${repository}" = "archlinux32" ]; then
      continue
    fi
    eval 'repo_path="${repo_paths__'"${repository}"'}"'
    if git -C "${repo_path}" archive "$(cat "${work_dir}/${repository}.revision")" -- | \
      tar -t --wildcards '*/repos' | \
      grep '^\([^/]\+/\)\{3\}PKGBUILD$' | \
      cut -d/ -f3 | \
      sed 's|-[^-]\+$||' | \
      sort -u | \
      grep -qxF "${package_repository}"; then
      echo "${repository}"
      return 0
    fi
  done
  >&2 echo "can't find git repository with package repository '$1'"
  exit 1

}

# package_locked_or_blocked package git_revision mod_git_revision repository
# return if package - of given repository and revisions - is [locked or blocked]

package_locked_or_blocked() {
  [ -f "${work_dir}/package-states/$1.$2.$3.$4.locked" ] || \
    [ -f "${work_dir}/package-states/$1.$2.$3.$4.blocked" ]
}

# generate_package_metadata $package $git_revision $mod_git_revision $repository
# or
# generate_package_metadata $package.$git_revision.$mod_git_revision.$repository
# generate the meta data files of a package (dependencies, built packages, ...)

generate_package_metadata() {

  local package="$1"
  local git_revision="$2"
  local mod_git_revision="$3"
  local repository="$4"
  local file_prefix
  local file
  local PKGBUILD

  if [ $# -eq 1 ]; then
    # second form
    repository="${package##*.}"
    package="${package%.*}"
    mod_git_revision="${package##*.}"
    package="${package%.*}"
    git_revision="${package##*.}"
    package="${package%.*}"
  fi

  file_prefix="${work_dir}/package-infos/${package}.${git_revision}.${mod_git_revision}.${repository}"

  if [ -e "${file_prefix}.builds" ] && \
    [ -e "${file_prefix}.build-depends" ] && \
    [ -e "${file_prefix}.run-depends" ] && \
    [ -e "${file_prefix}.groups" ] && \
    [ -e "${file_prefix}.packages" ]; then
    return 0
  fi

  if ! make_source_info "${package}" "${repository}" "${git_revision}" "${mod_git_revision}" "${file_prefix}.SRCINFO"; then
    echo "make_source_info failed."
    exit 1
  fi
  if [ ! -s "${file_prefix}.SRCINFO" ]; then
    >&2 printf '"%s" not created by "make_source_info" - eh, what?' "${file_prefix}.SRCINFO"
    exit 1
  fi

  # otherwise this just calls for trouble
  sed -i '
    /^[^=]*=\s*$/d
    s/_i686\(\s*=\)/\1/
  ' "${file_prefix}.SRCINFO"

  # extract "groups" = groups \cup provides
  grep "$(printf '^\t\\(groups\\|provides\\) = ')" "${file_prefix}.SRCINFO" | \
    cut -d= -f2 | \
    sed 's|^\s\+||; s|[<>]$||' | \
    sort -u > \
    "${file_prefix}.groups"

  # extract "packages" = pkgname
  grep '^pkgname = ' "${file_prefix}.SRCINFO" | \
    cut -d= -f2 | \
    sed 's|^\s\+||; s|[<>]$||' | \
    sort -u > \
    "${file_prefix}.packages"

  # extract "builds" = provides \cup pkgname \cup groups
  cat "${file_prefix}.groups" "${file_prefix}.packages" | \
    sort -u > \
    "${file_prefix}.builds"

  # extract "build-depends" = makedepends \cup checkdepends \cup depends \cup \{ base, base-devel \} \setminus "builds"
  {
    {
      printf 'all_depend = %s\n' 'base' 'base-devel'
      sed -n "$(printf '/^pkgname = /q;/^\tdepends = /p')" "${file_prefix}.SRCINFO"
      grep "$(printf '^\t\\(makedepends\\|checkdepends\\) = ')" "${file_prefix}.SRCINFO"
    } | \
      cut -d= -f2 | \
      sed 's|^\s\+||; s|[<>]$||' | \
      sort -u
    sed 'p' "${file_prefix}.builds"
  } | \
    sort | \
    uniq -u > \
    "${file_prefix}.build-depends"

  # extract "run-depends" = depends \cup \{ base \} \setminus "builds"
  {
    {
      printf 'all_depend = %s\n' 'base'
      sed -n "$(printf '/^pkgname = /q;/^\tdepends = /p')" "${file_prefix}.SRCINFO"
    } | \
      cut -d= -f2 | \
      sed 's|^\s\+||; s|[<>]$||' | \
      sort -u
    sed 'p' "${file_prefix}.builds"
  } | \
    sort | \
    uniq -u > \
    "${file_prefix}.run-depends"

  rm "${file_prefix}.SRCINFO"

}

# delete_old_metadata
# delete old (=unneeded) meta data of packages

delete_old_metadata() {

  local current_metadata

  current_metadata=$(
    find "${work_dir}/package-infos" -maxdepth 1 -printf '%f\n' | \
      sed '
        s|\.[^.]\+$||
        s|\.\([^.]\+\)\.\([^.]\+\)\.\([^.]\+\)$| \1 \2 \3|
      ' | \
      sort -u
  )

  (
    # what we have
    echo "${current_metadata}"

    # package-states should stay
    find "${work_dir}/package-states" -maxdepth 1 -printf '%f\n' | \
      sed '
        s|\.\([^.]\+\)\.\([^.]\+\)\(\.[^.]\+\)\.\([^.]\+\)$| \1 \2 \3|
      ' | \
      sort -u | \
      sed 'p'

    # build-list items should stay
    sed 'p' "${work_dir}/build-list"

    tmp_dir=$(mktemp -d)
    trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT

    echo "${current_metadata}" | \
      sort -k1,1 > \
      "${tmp_dir}/current-metadata"

    # the newest of the following should stay:
    (
      # deletion-list items
      cat "${work_dir}/deletion-list"
      # all packages in the repos
      for repo in ${repo_names}; do
        eval 'git -C "${repo_paths__'"${repo}"'}" archive '"$(cat "${work_dir}/${repo}.revision")" | \
          tar -t | \
          sed '
            s|/$||
            /\//d
          '
      done
    ) | \
      sort -u | \
      join -j 1 -o 2.2,2.3,2.4,2.1 - "${tmp_dir}/current-metadata" | \
      sort -k4,4 > \
      "${tmp_dir}/find-newest-revisions"

    uniq -uf3 < \
      "${tmp_dir}/find-newest-revisions" | \
      awk '{print $4 " " $1 " " $2 " " $3}' | \
      sed 'p'

    uniq -Df3 < \
      "${tmp_dir}/find-newest-revisions" | \
      uniq --group=append -f3 | \
      (
        revs=''
        mod_revs=''
        opkg=''
        orepo=''
        while read -r rev mod_rev repo pkg; do

          if [ -z "${rev}" ] && \
            [ -z "${mod_rev}" ] && \
            [ -z "${repo}" ] && \
            [ -z "${pkg}" ]; then

            printf '%s %s %s %s\n' \
              "$(
                printf '%s\n' ${revs} | \
                  find_newest_of_git_revisions
              )" \
              "$(
                printf '%s\n' ${mod_revs} | \
                  find_newest_of_git_revisions
              )" \
              "${orepo}" \
              "${opkg}"

            revs=''
            mod_revs=''
            orepo=''
            opkg=''
            continue
          fi
          revs=$(
            # shellcheck disable=SC2086
            printf '%s\n' ${revs} ${rev} | \
              sort -u
          )
          mod_revs=$(
            # shellcheck disable=SC2086
            printf '%s\n' ${mod_revs} ${mod_rev} | \
              sort -u
          )
          orepo="${repo}"
          opkg="${pkg}"
        done
      ) | \
      awk '{print $4 " " $1 " " $2 " " $3}' | \
      sed 'p'
  ) | \
    sort | \
    uniq -u | \
    while read -r pkg rev mod_rev repo; do
      rm -f "${work_dir}/package-infos/${pkg}.${rev}.${mod_rev}.${repo}."*
    done
}

# repository_of_package $package.$repo_revision.$mod_repo_revision.$repository
# print which (stable) repository a package belongs to

repository_of_package() {
  local package="$1"
  local repository="${package##*.}"
  package="${package%.*}"
  local a32_rev="${package##*.}"
  package="${package%.*.*}"

  case "${repository}" in
    'multilib')
      if git -C "${repo_paths__archlinux32}" archive --format=tar "${a32_rev}" -- 'extra-from-multilib' | \
        tar -Ox | \
        grep -qFx "${package%.*.*.*}"; then
        echo 'extra'
      else
        echo 'community'
      fi
      ;;
    *)
      echo "${repository}"
  esac
}

# official_or_community $package.$repo_revision.$mod_repo_revision.$repository $ending
# print wether the specified package is an official package (print
# $ending) or a community package (print 'community-$ending') or a
# build-suppor package (print 'build-support')

official_or_community() {
  local prepo
  prepo=$(repository_of_package "$1")

  if [ "${prepo}" = 'community' ]; then
    echo 'community-'"$2"
  elif [ "${prepo}" = 'build-support' ]; then
    echo 'build-support'
  else
    echo "$2"
  fi
}

# ls_master_mirror $path
# list content of $path on the master mirror (via rsync)

ls_master_mirror() {

  local path="$1"

  ${master_mirror_rsync_command} \
    "${master_mirror_rsync_directory}/${path}/" | \
    grep -v '\s\.$' | \
    awk '{print $5}'

}

# remove_old_package_versions $arch $repository $package_file
# removes all older (not-newer) versions of $package_file for architecture
# $arch in all repositories not-older (newer) than $repository

remove_old_package_versions() {

  local arch="$1"
  local repository="$2"
  local package="$3"

  # repositories in which older packages should be deleted
  local delete_older_repositories
  # repositories in which not-newer packages should be deleted
  local delete_not_newer_repositories

  if echo "${standalone_package_repositories}" | \
    grep -qxF "${repository}"; then

    delete_older_repositories="${repository}"
    delete_not_newer_repositories=''

  elif echo "${staging_package_repositories}" | \
    grep -qxF "${repository}"; then

    delete_older_repositories="${repository}"
    delete_not_newer_repositories=$(
      echo "${staging_package_repositories}" | \
        grep -vxF "${repository}"
    ) || true

  elif echo "${testing_package_repositories}" | \
    grep -qxF "${repository}"; then

    delete_older_repositories=$(
      printf '%s\n' "${staging_package_repositories}" "${repository}"
    )
    delete_not_newer_repositories=$(
      echo "${testing_package_repositories}" | \
        grep -vxF "${repository}"
    ) || true

  elif echo "${stable_package_repositories}" | \
    grep -qxF "${repository}"; then

    delete_older_repositories=$(
      printf '%s\n' "${staging_package_repositories}" "${testing_package_repositories}" "${repository}"
    )
    delete_not_newer_repositories=$(
      echo "${stable_package_repositories}" | \
        grep -vxF "${repository}"
    ) || true

  else

    >&2 printf 'remove_old_package_versions: Unknown repository "%s".\n' "${repository}"
    return 1

  fi

  (
    tmp_dir=$(mktemp -d)
    trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT

    {
      for repo in ${delete_older_repositories}; do
        ls_master_mirror "${arch}/${repo}" | \
          sed '
            /\.pkg\.tar\.xz$/!d
            s|-\([^-]\+-[^-]\+\)-\([^-]\+\)$| \1 \2|
            /^'"$(str_to_regex "${package%-*-*-*}")"' /!d
            s|^|2 '"${arch} ${repo}"' |
          '
      done
      for repo in ${delete_not_newer_repositories}; do
        ls_master_mirror "${arch}/${repo}" | \
          sed '
            /\.pkg\.tar\.xz$/!d
            s|-\([^-]\+-[^-]\+\)-\([^-]\+\)$| \1 \2|
            /^'"$(str_to_regex "${package%-*-*-*}")"' /!d
            s|^|0 '"${arch} ${repo}"' |
          '
      done
      echo "${package%-*}" | \
        sed 's|^.*-\([^-]\+-[^-]\+\)$|1 %cut% %it% %here% \1|'
    } | \
      sort -k5V,5 -k1n,1 | \
      sed -n '
        /^1 %cut% %it% %here% /q
        s/^[02] //
        s/ \(\S\+\)$/-\1/
        p
      ' > \
      "${tmp_dir}/packages-to-delete"

    cut -d' ' -f1,2 < \
      "${tmp_dir}/packages-to-delete" | \
      grep -vxF "${arch} ${repository}" | \
      sort -u > \
      "${tmp_dir}/repositories-to-modify"

    # fetch all databases being modified
    while read -r del_arch del_repo; do
      mkdir -p "${tmp_dir}/${del_arch}/${del_repo}"
      ${master_mirror_rsync_command} \
        "${master_mirror_rsync_directory}/${del_arch}/${del_repo}/${del_repo}.db."* \
        "${master_mirror_rsync_directory}/${del_arch}/${del_repo}/${del_repo}.files."* \
        "${tmp_dir}/${del_arch}/${del_repo}/"
    done < \
      "${tmp_dir}/repositories-to-modify"

    while read -r del_arch del_repo del_package _; do
      if [ "${del_arch}/${del_repo}" = "${arch}/${repository}" ]; then
        # we do not repo-remove the package in the target repository
        continue
      fi
      repo-remove -q "${tmp_dir}/${del_arch}/${del_repo}/${del_repo}.db.tar.gz" \
        "${del_package}"
    done < \
      "${tmp_dir}/packages-to-delete"

    # upload modified databases
    while read -r del_arch del_repo; do
      ${master_mirror_rsync_command} \
        "${tmp_dir}/${del_arch}/${del_repo}/${del_repo}.db."* \
        "${tmp_dir}/${del_arch}/${del_repo}/${del_repo}.files."* \
        "${master_mirror_rsync_directory}/${del_arch}/${del_repo}/"
    done < \
      "${tmp_dir}/repositories-to-modify"

    sed '
      s| \(\S\+\)$|-\1|
      y| |/|
      s|^|rm "|
      s|$|"|
      p
      s|"$|.sig"|
    ' "${tmp_dir}/packages-to-delete" | \
      ${master_mirror_sftp_command}
  )

}

# wait_some_time $minimum $diff
# wait between minimum and minimum+diff seconds (diff defaults to 30)

wait_some_time() {
  local minimum=$1
  local diff=$2
  local random

  if [ -z "${diff}" ]; then
    diff=30
  fi

  random=$(
    dd if='/dev/urandom' count=1 2> /dev/null | \
      cksum | \
      cut -d' ' -f1
  )

  sleep $((minimum + random % diff))
}

# str_to_regex $string
# escape dots for use in regex

str_to_regex() {
  echo "$1" | \
    sed 's|\.|\\.|g'
}

# make_source_info $package $repository $git_revision $mod_git_revision $output
# create .SRCINFO from PKGBUILD within git repositories, output to $output

make_source_info() {

  local package="$1"
  local repository="$2"
  local git_revision="$3"
  local mod_git_revision="$4"
  local output="$5"

  local git_repo
  local PKGBUILD
  local PKGBUILD_mod

  git_repo=$(find_repository_with_commit "${git_revision}")

  if [ -z "${git_repo}" ]; then
    return 1
  fi

  find_pkgbuilds "${package}" "${repository}" "${git_repo}" "${git_revision}" "${mod_git_revision}"

  (

    tmp_dir=$(mktemp -d "${work_dir}/tmp.XXXXXX")
    trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT

    extract_source_directory "${git_repo}" "${git_revision}" "${mod_git_revision}" "${tmp_dir}"

    (
      cd "${tmp_dir}"
      makepkg --printsrcinfo
    ) > \
      "${output}"

  )

}

# recursively_umount_and_rm $dir
# umount all mountpoints in $dir which are also in $dir's
#  filesystem, possibly also $dir itself and then
#  rm -rf --one-file-system $dir

recursively_umount_and_rm() {
  local dir="$1"

  if [ -z "${dir}" ]; then
    >&2 echo 'ERROR: recursively_umount_and_rm requires an argument'
    exit 42
  fi

  find "${dir}" \
    -xdev -depth -type d \
    -exec 'mountpoint' '-q' '{}' ';' \
    -exec 'sudo' 'umount' '-l' '{}' ';'
  rm -rf --one-file-system "${dir}"
}

# insert_break_loops_orders $file
# inserts the correct number of 'break_loops' order into $file

insert_break_loops_orders() {
  local file="$1"
  local looped_packages
  local line

  looped_packages=$(
    find "${work_dir}/build-list.loops" -maxdepth 1 | \
      grep '/loop_[0-9]\+$' | \
      xargs -r cat | \
      sort -u | \
      wc -l
  )

  (
    while read -r line; do
      if [ "${line}" = 'break_loops' ]; then
        if [ "${looped_packages}" -eq 0 ]; then
          continue
        fi
        looped_packages=$((looped_packages-1))
      fi
      printf '%s\n' "${line}"
    done < \
      "${file}"
    while [ ${looped_packages} -gt 0 ]; do
      looped_packages=$((looped_packages-1))
      echo 'break_loops'
    done
  ) | \
    sponge "${file}"
}

# append_architectures $PKGBUILD
#  mangle $arch in PKBUILDs to contain i486, i586, i686

append_architectures() {
  local PKGBUILD="$1"
  sed -i '
    /^arch=[^#]*any/!{
      /^arch=(/s/(/(i686 /
    }
  ' "${PKGBUILD}"
}

# find_newest_of_git_revisions
# find newest git revision of the ones provided at stdin
# (assuming linear history)

find_newest_of_git_revisions() {
  local revisions
  local repo
  revisions=$(cat)

  if [ "$(
    echo "${revisions}" | \
      wc -l
    )" -eq 1 ]; then

    echo "${revisions}"
    return

  fi

  repo=$(
    find_repository_with_commit \
      "$(
        echo "${revisions}" | \
          grep -xm1 '[0-9a-f]\{40\}'
      )"
  )

  eval 'repo="${repo_paths__'"${repo}"'}"'

  echo "${revisions}" | \
    xargs -rn1 git -C "${repo}" rev-parse | \
    (
      newest=''
      while read -r current; do
        if [ -z "${newest}" ] || \
          git -C "${repo}" merge-base --is-ancestor "${newest}" "${current}"; then
            newest="${current}"
          fi
      done
      echo "${newest}"
    )
}

# find_package_repository_to_package $package $git_repository
# find the package repository a package from a given git repository
# belongs to

find_package_repository_to_package() {

  local package="$1"
  local git_repository="$2"
  local repo_path
  local repo

  eval 'repo_path="${repo_paths__'"${git_repository}"'}"'

  repo=$(
    git -C "${repo_path}" archive "$(cat "${work_dir}/${git_repository}.revision")" -- "${package}/repos" 2> /dev/null | \
      tar -t | \
      cut -d/ -f3 | \
      grep -vxF '' | \
      grep -v 'staging\|testing\|-unstable' | \
      grep -v -- '-i686$' | \
      sed 's|-[^-]\+$||' | \
      sort -u
  )

  if [ -z "${repo}" ]; then
    return 1
  fi

  if [ "$(
    echo "${repo}" | \
      wc -l
    )" -ne 1 ]; then
    return 1
  fi

  echo "${repo}"

}

# extract_source_directory $git_repo $rev $mod_rev $output
# extract files found in the svn/git source directories
# $PKGBUILD and $PKGBUILD_mod are expected to be set correctly

extract_source_directory() {

  local git_repo="$1"
  local rev="$2"
  local mod_rev="$3"
  local output="$4"

  if [ -n "${PKGBUILD}" ]; then
    eval 'git -C "${repo_paths__'"${git_repo}"'}" archive "${rev}" -- "${PKGBUILD%/*}"' | \
      tar -x --strip-components=3 -C "${output}"
  fi

  if [ -n "${PKGBUILD_mod}" ]; then
    git -C "${repo_paths__archlinux32}" archive "${mod_rev}" -- "${PKGBUILD_mod%/*}" | \
      tar -x --overwrite --exclude 'PKGBUILD' --strip-components=2 -C "${output}" 2> /dev/null || \
      true
    git -C "${repo_paths__archlinux32}" archive "${mod_rev}" -- "${PKGBUILD_mod}" | \
      tar -Ox "${PKGBUILD_mod}" >> \
      "${output}/PKGBUILD"
  fi

  append_architectures "${output}/PKGBUILD"

  # shellcheck disable=SC2016
  sed -i '/^\$Id\$$/d' "${output}/PKGBUILD"

}

# find_dependencies_on_build_list $package $git_revision $mod_git_revision $repository
# return a list of packages on the build list which are (run- / build- / check-time)
# dependencies of the given package

find_dependencies_on_build_list() {

  local package="$1"
  local git_revision="$2"
  local mod_git_revision="$3"
  local repository="$4"

  generate_package_metadata "${package}" "${git_revision}" "${mod_git_revision}" "${repository}"

  (
    cat "${work_dir}/package-infos/${package}.${git_revision}.${mod_git_revision}.${repository}.build-depends"
    grep -vxF 'break_loops' "${work_dir}/build-list" | \
      awk '{print $1 "." $2 "." $3 "." $4}' | \
      sed "
        s|^|${work_dir}/package-infos/|
        s|\$|\.builds|
      " | \
      xargs -r cat | \
      sort -u
  ) | \
    sort | \
    uniq -d

}

# download_sources_by_hash $package $repository $git_revision $git_mod_revision
# try to download all sources by their hash into the current directory
# returns 0 if any source was downloaded and 1 otherwise

download_sources_by_hash() {

  local package="$1"
  local repository="$2"
  local git_revision="$3"
  local git_mod_revision="$4"

  local return_value=1
  local tmp_dir
  local sum_type
  local arch_suffix

  tmp_dir=$(mktemp -d)

  if ! make_source_info "${package}" "${repository}" "${git_revision}" "${git_mod_revision}" "${tmp_dir}/.SRCINFO"; then
    >&2 echo 'download_sources_by_hash: make_source_info failed.'
    rm -rf --one-file-system "${tmp_dir}"
    return 1
  fi

  if ! [ -s "${tmp_dir}/.SRCINFO" ]; then
    >&2 echo 'download_sources_by_hash: ".SRCINFO" has not been created by make_source_info.'
    rm -rf --one-file-system "${tmp_dir}"
    return 1
  fi

  for arch_suffix in '' '_i686'; do
    for sum_type in 'sha256sum' 'sha512sum'; do
      grep "^\s*${sum_type}s${arch_suffix} = " "${tmp_dir}/.SRCINFO" | \
        sed 's|^.* = ||' | \
        cat -n > \
        "${tmp_dir}/sums"
      grep "^\s*source${arch_suffix} = " "${tmp_dir}/.SRCINFO" | \
        sed '
          s|^.* = ||
          s|::.*$||
          s|.*/||
        ' | \
        cat -n > \
        "${tmp_dir}/urls"
      if [ "$(wc -l < "${tmp_dir}/sums")" -eq "$(wc -l < "${tmp_dir}/urls")" ]; then
        join -1 1 -2 1 -o 1.2,2.2 "${tmp_dir}/sums" "${tmp_dir}/urls" > \
          "${tmp_dir}/joined"
        while read -r sum file; do
          if [ "${sum}" = 'SKIP' ]; then
            continue
          fi
          if echo "${sum}  ${file}" | \
            ${sum_type} -c > /dev/null 2>&1; then
            # the correct source is already there
            continue
          fi
          if wget -O "${tmp_dir}/transfer" "${source_by_hash_mirror}${sum}"; then
            mv "${tmp_dir}/transfer" "${file}"
            return_value=0
          fi
        done < \
          "${tmp_dir}/joined"
      fi
    done
  done

  rm -rf --one-file-system "${tmp_dir}"
  return ${return_value}

}