summaryrefslogtreecommitdiff
blob: c8bc79d4afd73d653a06f5117410c0c94c8ea100 (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
#!/bin/bash
# vim: set et sw=4 sts=4 tw=80:
# Copyright 2007-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

# A bit of hackery to update everything that is humanly possible
# that maybe related to an older version of Python. This script can
# be run as many times as you like.
#
# OLD_PYTHON_VERSIONS = Old Python versions we are upgrading from.
# NEW_PYTHON_VERSION  = New Python version we are upgrading to.
# PKGS_EXCEPTIONS     = Packages that should NOT be re-emerged for any reason.
# PKGS_MANUAL         = Packages that should be re-emerged even if they don't fit
#                       the criteria (eg. ones that have Python compiled statically).
#
# Runtime Variables:
#
# PKGS_TO_REMERGE     = List of packages we deem to need re-emerging.
# PKGS_OK             = List of packages that should be merged without any problems.
# PKGS_MISSING        = List of packages that are installed, but cannot be merged,
#                       because they have been pruned from portage.

if [[ "${BASH_VERSINFO[0]}" -lt 4 ]]; then
	echo "${0##*/}: Bash >=4.0 required" >&2
	exit 1
fi

VERSION="0.10"
OLD_PYTHON_VERSIONS=""
OLD_PYTHON2_VERSIONS=""
OLD_PYTHON3_VERSIONS=""
NEW_PYTHON_VERSION="$(/usr/bin/python -c 'from sys import version_info; print(".".join([str(x) for x in version_info[:2]]))')"
NEW_PYTHON2_VERSION=""
NEW_PYTHON3_VERSION=""

PKGS_EXCEPTIONS="dev-lang/python sys-apps/portage"
PKGS_MANUAL=""

PRETEND=0
REINSTALL_IDENTICAL_VERSIONS=0
VERBOSE=0
PKGS_TO_REMERGE=""
PKGS_COUNT_REMERGE=0
PYTHON2_VERSIONS="2.1 2.2 2.3 2.4 2.5 2.6 2.7"
PYTHON3_VERSIONS="3.0 3.1 3.2 3.3 3.4"
PYTHON_VERSIONS="${PYTHON2_VERSIONS} ${PYTHON3_VERSIONS}"

SUPPORTED_PMS="portage pkgcore paludis"
PMS_COMMAND=( "emerge" "pmerge" "cave" )
PMS_OPTIONS=( "-Dv1 --keep-going" "-Do" "resolve --execute --preserve-world" )
PMS_PRETENDING_OPTIONS=( "-p" "-p" "--no-execute" )
PMS_INDEX=0
CUSTOM_PMS_COMMAND=""
ADDITIONAL_OPTIONS=""

# Checks
CHECK_MANUAL=1
CHECK_PYLIBDIR=1
CHECK_PYTHON_ABIS=1
CHECK_SHARED_LINKING=1
CHECK_STATIC_LINKING=1
CHECK_ECLASS_NEED_REBUILD=1

# load the gentoo-style info macros, but hack to get around
# it thinking this is an rc script
EBUILD="1"
source /etc/init.d/functions.sh

# portage variables
PKG_DBDIR=/var/db/pkg

# usage()
# display usage
usage() {
	cat <<EOF_USAGE
${0##*/} -- Find & rebuild packages broken due to a Python upgrade

Usage: python-updater [OPTION]

Options:
    -h, --help      Print usage
    -V, --version   Print version
    -p, --pretend   Pretend (don't do anything)
    -v, --verbose   Increase verbosity (may be specified multiple times)
    --reinstall-identical-versions
                    Reinstall identical versions of packages
    -P PM, --package-manager PM
                    Use package manager PM, where PM can be one of:
$(for p in ${SUPPORTED_PMS}; do
echo -ne $'\t\t    '\* ${p}
if [[ ${p} == portage ]]; then
	echo ' (Default)'
else
	echo
fi
done)
    -c CMD, --command CMD
                    Pipe found packages to command CMD instead of invoking package
                    manager. Only for debug and script use.
    --package-manager-command CMD
                    Call CMD instead of the default command for the specified
                    package manager.
    -eCHECK --enable-CHECK
                    Enable CHECK where CHECK can be one of:
                    * manual         (Enabled by default)
                    * need_rebuild   (Enabled by default)
                    * pylibdir       (Enabled by default)
                    * PYTHON_ABIS    (Enabled by default)
                    * shared_linking (Enabled by default)
                    * static_linking (Enabled by default)
    -dCHECK --disable-CHECK
                    Disable CHECK. See --enable option for a list of checks
    -- OPTIONS      Pass additional options to package manager

See CHECKS section in the manpage for explanations about checks and
EXAMPLES section to learn how to use them.
EOF_USAGE
}

# veinfo(verbosity, message)
# einfo message if VERBOSE is bigger than verbosity.
veinfo() {
	if [[ VERBOSE -ge ${1} ]]; then
		shift
		einfo "${@}"
	fi
}

# die(message)
# Print error message and exit.
die() {
	eerror "${@}"
	exit 1
}

# has(checked_element, list)
has() {
	local checked_element="${1}"
	shift

	local argument
	for argument in "${@}"; do
		[[ "${checked_element}" == "${argument}" ]] && return 0
	done

	return 1
}

# has_version(cpv)
has_version() {
	if [[ "${PMS_COMMAND[${PMS_INDEX}]}" == "emerge" ]]; then
		/usr/bin/portageq has_version / "${1}"
	elif [[ "${PMS_COMMAND[${PMS_INDEX}]}" == "pmerge" ]]; then
		pquery --vdb "${1}"
	else
		cave has-version "${1}"
	fi
}

# get_ebuild_path(CATEGORY, PN, SLOT)
get_ebuild_path() {
	# These manual calls to Portage API are 2 times faster than 'portageq get_repo_path / "$(portageq metadata / ebuild "$(portageq best_visible / "${1}")" repository)"'.
	/usr/bin/python -c "
import sys

if '' in sys.path:
	sys.path.remove('')

import portage

dbapi = portage.db['/']['porttree'].dbapi
pkg_list = dbapi.match('${1}/${2}${3:+:}${3}')
if pkg_list:
	best_visible = portage.best(pkg_list)
	if best_visible:
		repository = dbapi.aux_get(best_visible, ['repository'])
		if repository:
			repository_location = dbapi.getRepositoryPath(repository[0])
			if repository_location:
				print(repository_location + '/${1}/${2}/' + best_visible.split('/')[1] + '.ebuild')"
}

# get_ebuild_variable(CATEGORY, PN, SLOT, variable)
get_ebuild_variable() {
	if [[ "${PMS_COMMAND[${PMS_INDEX}]}" =~ ^(emerge|pmerge)$ ]]; then
		local ebuild_path="$(get_ebuild_path "${1}" "${2}" "${3}")"
		if [[ -f "${ebuild_path}" ]]; then
			grep "^${4}=" "${ebuild_path}" | sed -e "s/${4}=[\"']\(.*\)[\"']/\1/"
		fi
	else
		cave print-id-environment-variable "${1}/${2}${3:+:}${3}::/?" --best --format %v --variable-name ${4}
	fi
}

# get_vdb_variable(variable, environment_file)
get_vdb_variable() {
	local variable="${1}"
	local environment_file="${2}"

	unset "${variable}"
	local output
	output="$(bzip2 -cd "${environment_file}" | grep -E "^declare (-[[:alnum:]-]+ )?${variable}=")"
	if [[ -z "${output}" ]]; then
		output="$(bzip2 -cd "${environment_file}" | grep -E "^(declare (-[[:alnum:]-]+ )?)?${variable}=")"
	fi
	if [[ -n "${output}" ]]; then
		output="$(echo "${output}" | sed -e "s/^\(declare \(-[[:alnum:]-]\+ \)\?\)\?${variable}=\(\"\)\?//;s/\(\"\)\?$//")"
		if [[ "${output}" == "'"*"'" ]]; then
			output="${output:1:$((${#output}-2))}"
		fi
		eval "${variable}=\"\${output}\""
		return 0
	else
		return 1
	fi
}

# set_unless_changed(variable=value)
# This function can be used in /etc/portage/env.
set_unless_changed() {
	if [[ $# -lt 1 ]]; then
		die "${FUNCNAME}() requires at least 1 argument: VARIABLE=VALUE"
	fi

	local argument value variable
	for argument in "$@"; do
		if [[ ${argument} != *=* ]]; then
			die "${FUNCNAME}(): Argument '${argument}' has incorrect syntax"
		fi
		variable="${argument%%=*}"
		value="${argument#*=}"
		if eval "[[ \${${variable}} == \$(env -u ${variable} /usr/bin/portageq envvar ${variable}) ]]"; then
			eval "${variable}=\"\${value}\""
		fi
	done
}

# unset_unless_changed(variable)
# This function can be used in /etc/portage/env.
unset_unless_changed() {
	if [[ $# -lt 1 ]]; then
		die "${FUNCNAME}() requires at least 1 argument: VARIABLE"
	fi

	local variable
	for variable in "$@"; do
		if eval "[[ \${${variable}} == \$(env -u ${variable} /usr/bin/portageq envvar ${variable}) ]]"; then
			unset ${variable}
		fi
	done
}

global_USE_PYTHON=""

# get_USE_PYTHON(CATEGORY, PN, SLOT)
get_USE_PYTHON() {
	if [[ "${PMS_COMMAND[${PMS_INDEX}]}" =~ ^(emerge|pmerge)$ ]]; then
		if [[ -z "${global_USE_PYTHON}" ]]; then
			global_USE_PYTHON="$(/usr/bin/portageq envvar USE_PYTHON)"
		fi
		USE_PYTHON="${global_USE_PYTHON}"
		if [[ -f "/etc/portage/env/${1}/${2}" ]]; then
			USE_PYTHON="$(. "/etc/portage/env/${1}/${2}"; echo "${USE_PYTHON}")"
		fi
		if [[ -f "/etc/portage/env/${1}/${2}:${3}" ]]; then
			USE_PYTHON="$(. "/etc/portage/env/${1}/${2}:${3}"; echo "${USE_PYTHON}")"
		fi
	else
		USE_PYTHON="$(cave print-id-environment-variable "${1}/${2}${3:+:}${3}::/?" --best --format %v --variable-name USE_PYTHON)"
	fi
	if [[ -z "${USE_PYTHON}" ]]; then
		USE_PYTHON="${NEW_PYTHON2_VERSION} ${NEW_PYTHON3_VERSION}"
		USE_PYTHON="${USE_PYTHON# }"
		USE_PYTHON="${USE_PYTHON% }"
	fi
	echo "${USE_PYTHON}"
}

# check_python_abi_matching(PYTHON_ABI, PYTHON_ABI_pattern)
check_python_abi_matching() {
	local pattern patterns patterns_list="0" PYTHON_ABI

	while (($#)); do
		case "$1" in
			--patterns-list)
				patterns_list="1"
				;;
			--)
				shift
				break
				;;
			-*)
				die "${FUNCNAME}(): Unrecognized option '$1'"
				;;
			*)
				break
				;;
		esac
		shift
	done

	if [[ "$#" -ne 2 ]]; then
		die "${FUNCNAME}() requires 2 arguments"
	fi

	PYTHON_ABI="$1"

	if [[ "${patterns_list}" == "0" ]]; then
		pattern="$2"

		if [[ "${pattern}" == *"-cpython" ]]; then
			[[ "${PYTHON_ABI}" =~ ^[[:digit:]]+\.[[:digit:]]+$ && "${PYTHON_ABI}" == ${pattern%-cpython} ]]
		elif [[ "${pattern}" == *"-jython" ]]; then
			[[ "${PYTHON_ABI}" == ${pattern} ]]
		elif [[ "${pattern}" == *"-pypy-"* ]]; then
			[[ "${PYTHON_ABI}" == ${pattern} ]]
		else
			if [[ "${PYTHON_ABI}" =~ ^[[:digit:]]+\.[[:digit:]]+$ ]]; then
				[[ "${PYTHON_ABI}" == ${pattern} ]]
			elif [[ "${PYTHON_ABI}" =~ ^[[:digit:]]+\.[[:digit:]]+-jython$ ]]; then
				[[ "${PYTHON_ABI%-jython}" == ${pattern} ]]
			elif [[ "${PYTHON_ABI}" =~ ^[[:digit:]]+\.[[:digit:]]+-pypy-[[:digit:]]+\.[[:digit:]]+$ ]]; then
				[[ "${PYTHON_ABI%-pypy-*}" == ${pattern} ]]
			else
				die "${FUNCNAME}(): Unrecognized Python ABI '${PYTHON_ABI}'"
			fi
		fi
	else
		patterns="${2// /$'\n'}"

		while read pattern; do
			if check_python_abi_matching "${PYTHON_ABI}" "${pattern}"; then
				return 0
			fi
		done <<< "${patterns}"

		return 1
	fi
}

# get_OLD_PYTHON_VERSIONS_REGEX()
get_OLD_PYTHON_VERSIONS_REGEX() {
	if [[ -n "${PYTHON_REQUESTED_ACTIVE_VERSION}" ]]; then
		if [[ "${PYTHON_REQUESTED_ACTIVE_VERSION}" == "2" ]]; then
			echo "${OLD_PYTHON2_VERSIONS_REGEX}"
		elif [[ "${PYTHON_REQUESTED_ACTIVE_VERSION}" == "3" ]]; then
			echo "${OLD_PYTHON3_VERSIONS_REGEX}"
		fi
	else
		echo "${OLD_PYTHON_VERSIONS_REGEX}"
	fi
}

# get_OLD_PYTHON_SHARED_LIBRARIES_REGEX()
get_OLD_PYTHON_SHARED_LIBRARIES_REGEX() {
	if [[ -n "${PYTHON_REQUESTED_ACTIVE_VERSION}" ]]; then
		if [[ "${PYTHON_REQUESTED_ACTIVE_VERSION}" == "2" ]]; then
			echo "${OLD_PYTHON2_SHARED_LIBRARIES_REGEX}"
		elif [[ "${PYTHON_REQUESTED_ACTIVE_VERSION}" == "3" ]]; then
			echo "${OLD_PYTHON3_SHARED_LIBRARIES_REGEX}"
		fi
	else
		echo "${OLD_PYTHON_SHARED_LIBRARIES_REGEX}"
	fi
}

# Respect PYUPDATER_OPTIONS
if [[ -n "${PYUPDATER_OPTIONS}" ]]; then
	set -- ${PYUPDATER_OPTIONS} "${@}"
fi

# Respect PACKAGE_MANAGER environment variable
i=0
for pm in ${SUPPORTED_PMS}; do
	if [[ "${pm}" == "${PACKAGE_MANAGER}" ]]; then
		PMS_INDEX="${i}"
		break
	fi
	((i++))
done

# Command Line Parsing
while [[ -n "${1}" ]]; do
	case "${1}" in
		-h|--help)
			usage
			exit 0
			;;
		-V|--version)
			echo "${VERSION}"
			exit 0
			;;
		-p|--pretend)
			PRETEND=1
			;;
		-v|--verbose)
			((VERBOSE++))
			;;
		--reinstall-identical-versions)
			REINSTALL_IDENTICAL_VERSIONS=1
			;;
		-P|--package-manager)
			shift
			PACKAGE_MANAGER="${1}"
			case "${PACKAGE_MANAGER}" in
				portage|pkgcore|paludis)
					;;
				*)
					echo "Unrecognized package manager selected. Please select between ${SUPPORTED_PMS}"
					exit 1
					;;
			esac

			# PMS_INDEX is used to select the right commands and options for the selected package manager
			PMS_INDEX=0
			for PM in ${SUPPORTED_PMS}; do
				[[ ${PM} == ${PACKAGE_MANAGER} ]] && break
				PMS_INDEX=$((${PMS_INDEX} + 1))
			done
			;;
		--package-manager-command)
			shift
			CUSTOM_PMS_COMMAND="${1}"
			;;
		-c|--command)
			shift
			PIPE_COMMAND="${1}"
			;;
		-emanual|--enable-manual)
			CHECK_MANUAL=1
			;;
		-dmanual|--disable-manual)
			CHECK_MANUAL=0
			;;
		-eneed_rebuild|--enable-need_rebuild)
			CHECK_ECLASS_NEED_REBUILD=1
			;;
		-dneed_rebuild|--disable-need_rebuild)
			CHECK_ECLASS_NEED_REBUILD=0
			;;
		-epylibdir|--enable-pylibdir)
			CHECK_PYLIBDIR=1
			;;
		-dpylibdir|--disable-pylibdir)
			CHECK_PYLIBDIR=0
			;;
		-ePYTHON_ABIS|--enable-PYTHON_ABIS)
			CHECK_PYTHON_ABIS=1
			;;
		-dPYTHON_ABIS|--disable-PYTHON_ABIS)
			CHECK_PYTHON_ABIS=0
			;;
		-eshared_linking|--enable-shared_linking)
			CHECK_SHARED_LINKING=1
			;;
		-dshared_linking|--disable-shared_linking)
			CHECK_SHARED_LINKING=0
			;;
		-estatic_linking|--enable-static_linking)
			CHECK_STATIC_LINKING=1
			;;
		-dstatic_linking|--disable-static_linking)
			CHECK_STATIC_LINKING=0
			;;
		--)
			shift
			ADDITIONAL_OPTIONS="${*}"
			break
			;;
		*)
			usage
			echo "Unrecognized option '${1}'"
			exit 1
			;;
	esac
	shift
done

if [[ "${PMS_COMMAND[${PMS_INDEX}]}" == "emerge" ]]; then
	alias sed="$(/usr/bin/python -c "import os; print(os.path.dirname(os.path.realpath('$(type -p emerge)')))")/ebuild-helpers/sed"
fi

if has_version "=dev-lang/python-2*"; then
	if [[ "$(readlink /usr/bin/python2)" != "python2."* ]]; then
		die "'/usr/bin/python2' is not valid symlink"
	fi
	NEW_PYTHON2_VERSION="$(/usr/bin/python2 -c 'from sys import version_info; print(".".join([str(x) for x in version_info[:2]]))')"
fi
if has_version "=dev-lang/python-3*"; then
	if [[ "$(readlink /usr/bin/python3)" != "python3."* ]]; then
		die "'/usr/bin/python3' is not valid symlink"
	fi
	NEW_PYTHON3_VERSION="$(/usr/bin/python3 -c 'from sys import version_info; print(".".join([str(x) for x in version_info[:2]]))')"
fi
if [[ -z "${NEW_PYTHON2_VERSION}" && -z "${NEW_PYTHON3_VERSION}" ]]; then
	die "Python 2 and Python 3 not installed"
fi

OLD_PYTHON_SHARED_LIBRARIES_REGEX=""
for python_version in ${PYTHON_VERSIONS}; do
	if [[ "${python_version}" != "${NEW_PYTHON_VERSION}" ]]; then
		OLD_PYTHON_VERSIONS+="${OLD_PYTHON_VERSIONS:+ }${python_version}"
		soname="$(readlink -n /usr/lib/libpython${python_version}.so)"
		if [[ -z "${soname}" ]]; then
			# Use relatively safe, default value.
			soname="libpython${python_version}.so.1.0"
		fi
		OLD_PYTHON_SHARED_LIBRARIES_REGEX+="${OLD_PYTHON_SHARED_LIBRARIES_REGEX:+|}${soname//./\.}"
	fi
done
OLD_PYTHON_VERSIONS_REGEX="(${OLD_PYTHON_VERSIONS// /|})"
OLD_PYTHON_VERSIONS_REGEX="${OLD_PYTHON_VERSIONS_REGEX//./\.}"
OLD_PYTHON_SHARED_LIBRARIES_REGEX="(${OLD_PYTHON_SHARED_LIBRARIES_REGEX})"

OLD_PYTHON2_SHARED_LIBRARIES_REGEX=""
for python_version in ${PYTHON2_VERSIONS}; do
	if [[ "${python_version}" != "${NEW_PYTHON2_VERSION}" ]]; then
		OLD_PYTHON2_VERSIONS+="${OLD_PYTHON2_VERSIONS:+ }${python_version}"
		soname="$(readlink -n /usr/lib/libpython${python_version}.so)"
		if [[ -z "${soname}" ]]; then
			# Use relatively safe, default value.
			soname="libpython${python_version}.so.1.0"
		fi
		OLD_PYTHON2_SHARED_LIBRARIES_REGEX+="${OLD_PYTHON2_SHARED_LIBRARIES_REGEX:+|}${soname//./\.}"
	fi
done
OLD_PYTHON2_VERSIONS_REGEX="(${OLD_PYTHON2_VERSIONS// /|})"
OLD_PYTHON2_VERSIONS_REGEX="${OLD_PYTHON2_VERSIONS_REGEX//./\.}"
OLD_PYTHON2_SHARED_LIBRARIES_REGEX="(${OLD_PYTHON2_SHARED_LIBRARIES_REGEX})"

OLD_PYTHON3_SHARED_LIBRARIES_REGEX=""
for python_version in ${PYTHON3_VERSIONS}; do
	if [[ "${python_version}" != "${NEW_PYTHON3_VERSION}" ]]; then
		OLD_PYTHON3_VERSIONS+="${OLD_PYTHON3_VERSIONS:+ }${python_version}"
		soname="$(readlink -n /usr/lib/libpython${python_version}.so)"
		if [[ -z "${soname}" ]]; then
			# Use relatively safe, default value.
			soname="libpython${python_version}.so.1.0"
		fi
		OLD_PYTHON3_SHARED_LIBRARIES_REGEX+="${OLD_PYTHON3_SHARED_LIBRARIES_REGEX:+|}${soname//./\.}"
	fi
done
OLD_PYTHON3_VERSIONS_REGEX="(${OLD_PYTHON3_VERSIONS// /|})"
OLD_PYTHON3_VERSIONS_REGEX="${OLD_PYTHON3_VERSIONS_REGEX//./\.}"
OLD_PYTHON3_SHARED_LIBRARIES_REGEX="(${OLD_PYTHON3_SHARED_LIBRARIES_REGEX})"

declare -A PYTHON_GLOBALLY_SUPPORTED_ABIS
if [[ "${PMS_COMMAND[${PMS_INDEX}]}" == "emerge" ]]; then
	eval "$(/usr/bin/python -c \
"import re
import sys

if '' in sys.path:
	sys.path.remove('')

import portage

variables = [
	'_CPYTHON2_GLOBALLY_SUPPORTED_ABIS',
	'_CPYTHON3_GLOBALLY_SUPPORTED_ABIS',
	'_JYTHON_GLOBALLY_SUPPORTED_ABIS',
	'_PYPY_GLOBALLY_SUPPORTED_ABIS'
]

for variable in variables:
	exec('%(variable)s_regex = re.compile(r\'^%(variable)s=\((.*)\)\')' % {'variable': variable})

dbapi = portage.db['/']['porttree'].dbapi
python_eclass_locations = {}

if hasattr(dbapi.repositories.mainRepo(), 'eclass_db'):
	# Portage >=2.1.10.40 or >=2.2.0_alpha80.
	for repository in dbapi.repositories:
		python_eclass_location = repository.eclass_db.eclasses['python'].location
		python_eclass_locations[repository.name] = python_eclass_location
else:
	for repository_location in dbapi._repo_info:
		repository = dbapi._repo_info[repository_location].name
		python_eclass_location = dbapi._repo_info[repository_location].eclass_db.eclasses['python'].location
		python_eclass_locations[repository] = python_eclass_location

for repository, python_eclass_location in python_eclass_locations.items():
	for variable in variables:
		exec('%s = []' % variable)
	python_eclass = open(python_eclass_location)
	python_eclass_lines = python_eclass.readlines()
	python_eclass.close()
	for python_eclass_line in python_eclass_lines:
		for variable in variables:
			exec(
				'%(variable)s_matched = %(variable)s_regex.match(python_eclass_line)\n'
				'if %(variable)s_matched is not None:\n'
				'	%(variable)s = %(variable)s_matched.group(1).split(\' \')'
				% {'variable': variable}
			)
	python_globally_supported_abis = []
	for variable in variables:
		exec('python_globally_supported_abis.extend(%s)' % variable)
	print('PYTHON_GLOBALLY_SUPPORTED_ABIS[%s]=\"%s\"' % (repository, ' '.join(python_globally_supported_abis)))")"
fi

declare -A PYTHON_GLOBALLY_SUPPORTED_USE_FLAGS
for repository in "${!PYTHON_GLOBALLY_SUPPORTED_ABIS[@]}"; do
	USE_flags=""
	for PYTHON_ABI in ${PYTHON_GLOBALLY_SUPPORTED_ABIS[${repository}]}; do
		USE_flags+="${USE_flags:+ }python_abis_${PYTHON_ABI}"
	done
	PYTHON_GLOBALLY_SUPPORTED_USE_FLAGS[${repository}]="${USE_flags}"
done

einfo $'\e[1;34mStarting Python Updater...\e[0m'
einfo $'\e[1;36m'"Main active version of Python:    ${NEW_PYTHON_VERSION}"$'\e[0m'
einfo $'\e[1;36m'"Active version of Python 2:       ${NEW_PYTHON2_VERSION:-(None)}"$'\e[0m'
einfo $'\e[1;36m'"Active version of Python 3:       ${NEW_PYTHON3_VERSION:-(None)}"$'\e[0m'
einfo $'\e[1;36m'"Globally supported Python ABIs in installed repositories:"$'\e[0m'
eindent
for repository in $(echo "${!PYTHON_GLOBALLY_SUPPORTED_ABIS[@]}" | sed -e "s/ /\n/g" | sort); do
	einfo $'\e[1;36m'"${repository}: $(for ((i = 0; i < 30 - ${#repository}; i++)); do echo -n " "; done)${PYTHON_GLOBALLY_SUPPORTED_ABIS[${repository}]}"$'\e[0m'
done
eoutdent

[[ "${CHECK_MANUAL}" -ne 0 ]] \
	&& veinfo 1 'Check "manual" enabled.' \
	|| veinfo 1 'Check "manual" disabled.'
[[ "${CHECK_ECLASS_NEED_REBUILD}" -ne 0 ]] \
	&& veinfo 1 'Check "need_rebuild" enabled.' \
	|| veinfo 1 'Check "need_rebuild" disabled.'
[[ "${CHECK_PYLIBDIR}" -ne 0 ]] \
	&& veinfo 1 'Check "pylibdir" enabled.' \
	|| veinfo 1 'Check "pylibdir" disabled.'
[[ "${CHECK_PYTHON_ABIS}" -ne 0 ]] \
	&& veinfo 1 'Check "PYTHON_ABIS" enabled.' \
	|| veinfo 1 'Check "PYTHON_ABIS" disabled.'
if [[ "${CHECK_SHARED_LINKING}" -ne 0 ]]; then
	if ! type -P scanelf >/dev/null 2>&1; then
		ewarn 'scanelf not found!'
		ewarn 'Check "shared_linking" is disabled.'
		CHECK_SHARED_LINKING=0
	else
		veinfo 1 'Check "shared_linking" enabled.'
	fi
else
	veinfo 1 'Check "shared_linking" disabled.'
fi
if [[ "${CHECK_STATIC_LINKING}" -ne 0 ]]; then
	if ! type -P scanelf >/dev/null 2>&1; then
		ewarn 'scanelf not found!'
		ewarn 'Check "static_linking" is disabled.'
		CHECK_STATIC_LINKING=0
	else
		veinfo 1 'Check "static_linking" enabled.'
	fi
else
	veinfo 1 'Check "static_linking" disabled.'
fi

# Iterate through the contents of all the installed packages.
# ${PKG_DBDIR} must be followed by '/' to avoid problems when ${PKG_DBDIR} is a symlink.
for contents_file in $(find ${PKG_DBDIR}/ -name CONTENTS | sort); do
	environment_file="${contents_file%CONTENTS}environment.bz2"

	# Extract some variables. EAPI, PYTHON_MULTIPLE_ABIS/SUPPORT_PYTHON_ABIS, PYTHON_ABIS and PYTHON_REQUESTED_ACTIVE_VERSION are optional.
	get_vdb_variable PVR "${environment_file}" || die "Missing metadata in '${environment_file}' file. Manually reinstall corresponding package."
	get_vdb_variable EAPI "${environment_file}"
	get_vdb_variable PYTHON_MULTIPLE_ABIS "${environment_file}"
	get_vdb_variable SUPPORT_PYTHON_ABIS "${environment_file}"
	get_vdb_variable PYTHON_ABIS "${environment_file}"
	get_vdb_variable PYTHON_REQUESTED_ACTIVE_VERSION "${environment_file}"

	# Manually calculate CATEGORY, PF, PN and SLOT to avoid problems with moved packages.
	CATEGORY="$(echo "${environment_file#${PKG_DBDIR}/}" | sed -e "s:/.*::")"
	PF="$(echo "${environment_file#${PKG_DBDIR}/${CATEGORY}/}" | sed -e "s:/.*::")"
	PN="${PF%-${PVR}}"
	if [[ -f "${contents_file%CONTENTS}SLOT" ]]; then
		SLOT="$(<"${contents_file%CONTENTS}SLOT")"
	else
		get_vdb_variable SLOT "${environment_file}"
	fi

	CATPKG="${CATEGORY}/${PN}"
	CATPKGVER="${CATEGORY}/${PF}"
	veinfo 2 "Checking ${CATEGORY}/${PF}${SLOT:+:}${SLOT}"

	# Exclude packages that are exceptions, like Portage and Python itself.
	exception=0
	for exp in ${PKGS_EXCEPTIONS}; do
		if [[ -z "${CATPKG##${exp}}" ]]; then
			veinfo 2 "Skipping ${CATPKG}, reason: exception"
			exception=1
			break;
		fi
	done

	[[ ${exception} == 1 ]] && continue

	# Check if package is in PKGS_MANUAL
	if [[ CHECK_MANUAL -ne 0 ]]; then
		for pkg in ${PKGS_MANUAL}; do
			if [[ -z "${CATPKG##${pkg}}" ]]; then
				exception=2
				break;
			fi
		done
	fi

	# Replace SLOT by version number when REINSTALL_IDENTICAL_VERSIONS == 1
	# Reinstall identical versions when SLOT doesn't exist, bug #201848
	if [[ REINSTALL_IDENTICAL_VERSIONS -eq 1 || -z "${SLOT}" ]]; then
		CATPKGVER="=${CATPKGVER}"
	else
		CATPKGVER="${CATPKG}:${SLOT}"
	fi

	if [[ ${exception} = 2 ]]; then
		PKGS_TO_REMERGE+=" ${CATPKGVER}"
		eindent
		einfo "Adding to list: ${CATPKGVER}"
		eindent
		einfo "check: manual [Added to list manually, see CHECKS in manpage for more information.]"
		eoutdent && eoutdent
		continue
	fi

	if [[ -n "${PYTHON_MULTIPLE_ABIS}" && "${EAPI}" =~ ^4-python$ ]]; then
		# Potentially update USE flags in IUSE in EAPI >= 4-python.
		if [[ "${PRETEND}" -eq 0 && -f "${contents_file%CONTENTS}IUSE" && -f "${contents_file%CONTENTS}USE" && -f "${contents_file%CONTENTS}repository" ]]; then
			IUSE="$(<"${contents_file%CONTENTS}IUSE")"
			USE="$(<"${contents_file%CONTENTS}USE")"
			repository="$(<"${contents_file%CONTENTS}repository")"
			[[ "${repository}" == "python" ]] && repository="progress"
			if [[ -n "${#PYTHON_GLOBALLY_SUPPORTED_USE_FLAGS[${repository}]}" ]]; then
				for USE_flag in ${IUSE}; do
					if ! has "${USE_flag}" ${PYTHON_GLOBALLY_SUPPORTED_USE_FLAGS[${repository}]} && ! has "${USE_flag}" ${USE}; then
						sed -e "s/\(^\| \)${USE_flag}\($\| \)/\1\2/;s/^ //;s/  / /g;s/ $//" -i "${contents_file%CONTENTS}IUSE"
					fi
				done
				for USE_flag in ${PYTHON_GLOBALLY_SUPPORTED_USE_FLAGS[${repository}]}; do
					if ! has "${USE_flag}" ${IUSE}; then
						sed -e "s/$/ ${USE_flag}/" -i "${contents_file%CONTENTS}IUSE"
					fi
				done
			fi
		fi
		# Don't run any checks in EAPI >= 4-python.
		continue
	fi

	if [[ CHECK_PYTHON_ABIS -ne 0 ]]; then
		if [[ -n "${PYTHON_MULTIPLE_ABIS}" || -n "${SUPPORT_PYTHON_ABIS}" ]]; then
			new_PYTHON_ABIS=""
			PYTHON_RESTRICTED_ABIS="$(get_ebuild_variable "${CATEGORY}" "${PN}" "${SLOT}" PYTHON_RESTRICTED_ABIS)"
			RESTRICT_PYTHON_ABIS="$(get_ebuild_variable "${CATEGORY}" "${PN}" "${SLOT}" RESTRICT_PYTHON_ABIS)"
			if [[ -z "${PYTHON_RESTRICTED_ABIS}" && -n "${RESTRICT_PYTHON_ABIS}" ]]; then
				PYTHON_RESTRICTED_ABIS="${RESTRICT_PYTHON_ABIS}"
			fi
			USE_PYTHON="$(get_USE_PYTHON "${CATEGORY}" "${PN}" "${SLOT}")"
			for PYTHON_ABI in ${USE_PYTHON}; do
				if ! check_python_abi_matching --patterns-list "${PYTHON_ABI}" "${PYTHON_RESTRICTED_ABIS}"; then
					new_PYTHON_ABIS+="${new_PYTHON_ABIS:+ }${PYTHON_ABI}"
				fi
			done
			eindent && eindent
			veinfo 3 "Requested ABIs:          \"${USE_PYTHON}\""
			veinfo 3 "Restricted ABIs:         \"${PYTHON_RESTRICTED_ABIS}\""
			veinfo 3 "Previously enabled ABIs: \"${PYTHON_ABIS}\""
			veinfo 3 "Newly enabled ABIs:      \"${new_PYTHON_ABIS}\""
			eoutdent && eoutdent
			if [[ "${PYTHON_ABIS}" != "${new_PYTHON_ABIS}" ]]; then
				PKGS_TO_REMERGE+=" ${CATPKGVER}"
				eindent
				einfo "Adding to list: ${CATPKGVER}"
				eindent
				veinfo 1 "check: PYTHON_ABIS [ Previous Python ABIs: ${PYTHON_ABIS}, new Python ABIs: ${new_PYTHON_ABIS} ]"
				eoutdent && eoutdent
				continue
			fi
			# Don't run other checks if PYTHON_ABIS check has been run.
			continue
		fi
	fi

	if [[ CHECK_STATIC_LINKING -ne 0 ]]; then
		binaries="$(scanelf -qs +Py_Initialize < <(grep -E "^obj" "${contents_file}" | cut -d" " -f2 | grep -Ev "^/usr/lib(32|64)?/debug/") | sed "s/.* //")"
		if [[ -n "${binaries}" ]]; then
			PKGS_TO_REMERGE+=" ${CATPKGVER}"
			eindent
			einfo "Adding to list: ${CATPKGVER}"
			eindent
			veinfo 1 "check: static_linking [ Binaries linked against Python static libraries found:"
			eindent
			old_IFS="${IFS}"
			IFS=$'\n'
			for binary in ${binaries}; do
				veinfo 1 "${binary}"
			done
			IFS="${old_IFS}"
			eoutdent
			veinfo 1 "]"
			eoutdent && eoutdent
		fi
	fi

	if [[ "${PYTHON_REQUESTED_ACTIVE_VERSION}" =~ ^[[:digit:]]+\.[[:digit:]]+$ ]]; then
		eindent && eindent
		veinfo 2 "Requested active version of Python: \"${PYTHON_REQUESTED_ACTIVE_VERSION}\""
		eoutdent && eoutdent
		# Don't run other checks if given package has been built with precisely specified requested active version of Python.
		continue
	fi

	if [[ CHECK_ECLASS_NEED_REBUILD -ne 0 ]]; then
		get_vdb_variable PYTHON_NEED_REBUILD "${environment_file}"
		if echo "${PYTHON_NEED_REBUILD}" | grep -qE "$(get_OLD_PYTHON_VERSIONS_REGEX)"; then
			PKGS_TO_REMERGE+=" ${CATPKGVER}"
			eindent
			einfo "Adding to list: ${CATPKGVER}"
			eindent
			veinfo 1 "check: need_rebuild [ Ebuild set PYTHON_NEED_REBUILD=${PYTHON_NEED_REBUILD} ]"
			eoutdent && eoutdent
			continue
		fi
	fi

	if [[ CHECK_PYLIBDIR -ne 0 ]]; then
		# Search for possible old Python dirs in CONTENTS
		# /usr/include/python$old
		# /usr/lib/python$old
		# /usr/lib32/python$old
		# /usr/lib64/python$old
		if grep -qE "/usr/(include|lib(32|64)?)/python$(get_OLD_PYTHON_VERSIONS_REGEX)" "${contents_file}"; then
			PKGS_TO_REMERGE+=" ${CATPKGVER}"
			eindent
			einfo "Adding to list: ${CATPKGVER}"
			eindent
			veinfo 1 "check: pylibdir [ Installed file under old Python include/library directory ]"
			eoutdent && eoutdent
			continue
		fi
	fi

	if [[ CHECK_SHARED_LINKING -ne 0 ]]; then
		binaries="$(scanelf -qF "%F %n" < <(grep -E "^obj" "${contents_file}" | cut -d" " -f2 | grep -Ev "^/usr/lib(32|64)?/debug/") | grep -E "( |,)$(get_OLD_PYTHON_SHARED_LIBRARIES_REGEX)(,|$)")"
		if [[ -n "${binaries}" ]]; then
			PKGS_TO_REMERGE+=" ${CATPKGVER}"
			eindent
			einfo "Adding to list: ${CATPKGVER}"
			eindent
			veinfo 1 "check: shared_linking [ Binaries linked against old Python shared libraries found:"
			eindent
			old_IFS="${IFS}"
			IFS=$'\n'
			for binary in ${binaries}; do
				veinfo 1 "${binary}"
			done
			IFS="${old_IFS}"
			eoutdent
			veinfo 1 "]"
			eoutdent && eoutdent
		fi
	fi
done

# Pipe to command if we have one
if [[ -n "${PIPE_COMMAND}" ]]; then
	echo "${PKGS_TO_REMERGE}" | ${PIPE_COMMAND}
	exit "${?}"
fi

if [[ "${PMS_COMMAND[${PMS_INDEX}]}" == "emerge" ]] ; then
	# Filter out --getbinpkg, --getbinpkgonly, --usepkg and --usepkgonly options in EMERGE_DEFAULT_OPTS environment variable
	emerge_default_opts=""
	for option in $(/usr/bin/portageq envvar EMERGE_DEFAULT_OPTS); do
		if [[ "${option}" == -[[:alnum:]]* ]]; then
			[[ "${option//[gGkK]/}" != "-" ]] && emerge_default_opts+=" ${option//[gGkK]/}"
		elif [[ "${option}" != "--getbinpkg" && "${option}" != "--getbinpkgonly" && "${option}" != "--usepkg" && "${option}" != "--usepkgonly" ]]; then
			emerge_default_opts+=" ${option}"
		fi
	done
	export EMERGE_DEFAULT_OPTS="${emerge_default_opts# }"
fi

# Only pretending?
[[ PRETEND -eq 1 ]] && PMS_OPTIONS[${PMS_INDEX}]+=" ${PMS_PRETENDING_OPTIONS[${PMS_INDEX}]}"

# (Pretend to) reinstall packages
if [[ -n "${PKGS_TO_REMERGE}" ]]; then
	pmscmd="${CUSTOM_PMS_COMMAND}"
	[[ -z "${pmscmd}" ]] && pmscmd="${PMS_COMMAND[${PMS_INDEX}]}"
	cmd="${pmscmd} ${PMS_OPTIONS[${PMS_INDEX}]} ${PKGS_TO_REMERGE} ${ADDITIONAL_OPTIONS}"
	einfo ${cmd}
	${cmd}
else
	einfo "No packages need to be reinstalled."
fi