aboutsummaryrefslogtreecommitdiff
path: root/cmd/podman/common/completion.go
blob: 6723cbf62d6440a45bf4050f81f055b1abb95cda (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
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
package common

import (
	"bufio"
	"fmt"
	"os"
	"strings"

	"github.com/containers/common/pkg/config"
	"github.com/containers/podman/v2/cmd/podman/registry"
	"github.com/containers/podman/v2/libpod"
	"github.com/containers/podman/v2/libpod/define"
	"github.com/containers/podman/v2/pkg/domain/entities"
	"github.com/containers/podman/v2/pkg/registries"
	"github.com/containers/podman/v2/pkg/rootless"
	systemdGen "github.com/containers/podman/v2/pkg/systemd/generate"
	"github.com/spf13/cobra"
)

var (
	// ChangeCmds is the list of valid Change commands to passed to the Commit call
	ChangeCmds = []string{"CMD", "ENTRYPOINT", "ENV", "EXPOSE", "LABEL", "ONBUILD", "STOPSIGNAL", "USER", "VOLUME", "WORKDIR"}
	// LogLevels supported by podman
	LogLevels = []string{"debug", "info", "warn", "error", "fatal", "panic"}
)

type completeType int

const (
	// complete names and IDs after two chars
	completeDefault completeType = iota
	// only complete IDs
	completeIDs
	// only complete Names
	completeNames
)

type keyValueCompletion map[string]func(s string) ([]string, cobra.ShellCompDirective)

func setupContainerEngine(cmd *cobra.Command) (entities.ContainerEngine, error) {
	containerEngine, err := registry.NewContainerEngine(cmd, []string{})
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, err
	}
	if !registry.IsRemote() && rootless.IsRootless() {
		err := containerEngine.SetupRootless(registry.Context(), cmd)
		if err != nil {
			return nil, err
		}
	}
	return containerEngine, nil
}

func setupImageEngine(cmd *cobra.Command) (entities.ImageEngine, error) {
	imageEngine, err := registry.NewImageEngine(cmd, []string{})
	if err != nil {
		return nil, err
	}
	// we also need to set up the container engine since this
	// is required to setup the rootless namespace
	if _, err = setupContainerEngine(cmd); err != nil {
		return nil, err
	}
	return imageEngine, nil
}

func getContainers(cmd *cobra.Command, toComplete string, cType completeType, statuses ...string) ([]string, cobra.ShellCompDirective) {
	suggestions := []string{}
	listOpts := entities.ContainerListOptions{
		Filters: make(map[string][]string),
	}
	listOpts.All = true
	listOpts.Pod = true
	if len(statuses) > 0 {
		listOpts.Filters["status"] = statuses
	}

	engine, err := setupContainerEngine(cmd)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	containers, err := engine.ContainerList(registry.GetContext(), listOpts)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}

	for _, c := range containers {
		// include ids in suggestions if cType == completeIDs or
		// more then 2 chars are typed and cType == completeDefault
		if ((len(toComplete) > 1 && cType == completeDefault) ||
			cType == completeIDs) && strings.HasPrefix(c.ID, toComplete) {
			suggestions = append(suggestions, c.ID[0:12]+"\t"+c.PodName)
		}
		// include name in suggestions
		if cType != completeIDs && strings.HasPrefix(c.Names[0], toComplete) {
			suggestions = append(suggestions, c.Names[0]+"\t"+c.PodName)
		}
	}
	return suggestions, cobra.ShellCompDirectiveNoFileComp
}

func getPods(cmd *cobra.Command, toComplete string, cType completeType, statuses ...string) ([]string, cobra.ShellCompDirective) {
	suggestions := []string{}
	listOpts := entities.PodPSOptions{
		Filters: make(map[string][]string),
	}
	if len(statuses) > 0 {
		listOpts.Filters["status"] = statuses
	}

	engine, err := setupContainerEngine(cmd)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	pods, err := engine.PodPs(registry.GetContext(), listOpts)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}

	for _, pod := range pods {
		// include ids in suggestions if cType == completeIDs or
		// more then 2 chars are typed and cType == completeDefault
		if ((len(toComplete) > 1 && cType == completeDefault) ||
			cType == completeIDs) && strings.HasPrefix(pod.Id, toComplete) {
			suggestions = append(suggestions, pod.Id[0:12])
		}
		// include name in suggestions
		if cType != completeIDs && strings.HasPrefix(pod.Name, toComplete) {
			suggestions = append(suggestions, pod.Name)
		}
	}
	return suggestions, cobra.ShellCompDirectiveNoFileComp
}

func getVolumes(cmd *cobra.Command, toComplete string) ([]string, cobra.ShellCompDirective) {
	suggestions := []string{}
	lsOpts := entities.VolumeListOptions{}

	engine, err := setupContainerEngine(cmd)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	volumes, err := engine.VolumeList(registry.GetContext(), lsOpts)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}

	for _, v := range volumes {
		if strings.HasPrefix(v.Name, toComplete) {
			suggestions = append(suggestions, v.Name)
		}
	}
	return suggestions, cobra.ShellCompDirectiveNoFileComp
}

func getImages(cmd *cobra.Command, toComplete string) ([]string, cobra.ShellCompDirective) {
	suggestions := []string{}
	listOptions := entities.ImageListOptions{}

	engine, err := setupImageEngine(cmd)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	images, err := engine.List(registry.GetContext(), listOptions)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}

	for _, image := range images {
		// include ids in suggestions if more then 2 chars are typed
		if len(toComplete) > 1 && strings.HasPrefix(image.ID, toComplete) {
			suggestions = append(suggestions, image.ID[0:12])
		}
		for _, repo := range image.RepoTags {
			if toComplete == "" {
				// suggest only full repo path if no input is given
				if strings.HasPrefix(repo, toComplete) {
					suggestions = append(suggestions, repo)
				}
			} else {
				// suggested "registry.fedoraproject.org/f29/httpd:latest" as
				// - "registry.fedoraproject.org/f29/httpd:latest"
				// - "registry.fedoraproject.org/f29/httpd"
				// - "f29/httpd:latest"
				// - "f29/httpd"
				// - "httpd:latest"
				// - "httpd"
				paths := strings.Split(repo, "/")
				for i := range paths {
					suggestionWithTag := strings.Join(paths[i:], "/")
					if strings.HasPrefix(suggestionWithTag, toComplete) {
						suggestions = append(suggestions, suggestionWithTag)
					}
					suggestionWithoutTag := strings.SplitN(strings.SplitN(suggestionWithTag, ":", 2)[0], "@", 2)[0]
					if strings.HasPrefix(suggestionWithoutTag, toComplete) {
						suggestions = append(suggestions, suggestionWithoutTag)
					}
				}
			}
		}
	}
	return suggestions, cobra.ShellCompDirectiveNoFileComp
}

func getRegistries() ([]string, cobra.ShellCompDirective) {
	regs, err := registries.GetRegistries()
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return regs, cobra.ShellCompDirectiveNoFileComp
}

func getNetworks(cmd *cobra.Command, toComplete string) ([]string, cobra.ShellCompDirective) {
	suggestions := []string{}
	networkListOptions := entities.NetworkListOptions{}

	engine, err := setupContainerEngine(cmd)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	networks, err := engine.NetworkList(registry.Context(), networkListOptions)
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}

	for _, n := range networks {
		if strings.HasPrefix(n.Name, toComplete) {
			suggestions = append(suggestions, n.Name)
		}
	}
	return suggestions, cobra.ShellCompDirectiveNoFileComp
}

// validCurrentCmdLine validates the current cmd line
// It utilizes the Args function from the cmd struct
// In most cases the Args function validates the args length but it
// is also used to verify that --latest is not given with an argument.
// This function helps to makes sure we only complete valid arguments.
func validCurrentCmdLine(cmd *cobra.Command, args []string, toComplete string) bool {
	if cmd.Args == nil {
		// Without an Args function we cannot check so assume it's correct
		return true
	}
	// We have to append toComplete to the args otherwise the
	// argument count would not match the expected behavior
	if err := cmd.Args(cmd, append(args, toComplete)); err != nil {
		// Special case if we use ExactArgs(2) or MinimumNArgs(2),
		// They will error if we try to complete the first arg.
		// Lets try to parse the common error and compare if we have less args than
		// required. In this case we are fine and should provide completion.

		// Clean the err msg so we can parse it with fmt.Sscanf
		// Trim MinimumNArgs prefix
		cleanErr := strings.TrimPrefix(err.Error(), "requires at least ")
		// Trim MinimumNArgs "only" part
		cleanErr = strings.ReplaceAll(cleanErr, "only received", "received")
		// Trim ExactArgs prefix
		cleanErr = strings.TrimPrefix(cleanErr, "accepts ")
		var need, got int
		cobra.CompDebugln(cleanErr, true)
		_, err = fmt.Sscanf(cleanErr, "%d arg(s), received %d", &need, &got)
		if err == nil {
			if need >= got {
				// We still need more arguments so provide more completions
				return true
			}
		}
		cobra.CompDebugln(err.Error(), true)
		return false
	}
	return true
}

func prefixSlice(pre string, slice []string) []string {
	for i := range slice {
		slice[i] = pre + slice[i]
	}
	return slice
}

func completeKeyValues(toComplete string, k keyValueCompletion) ([]string, cobra.ShellCompDirective) {
	suggestions := make([]string, 0, len(k))
	directive := cobra.ShellCompDirectiveNoFileComp
	for key, getComps := range k {
		if strings.HasPrefix(toComplete, key) {
			if getComps != nil {
				suggestions, dir := getComps(toComplete[len(key):])
				return prefixSlice(key, suggestions), dir
			}
			return nil, cobra.ShellCompDirectiveNoFileComp
		}
		if strings.HasPrefix(key, toComplete) {
			suggestions = append(suggestions, key)
			latKey := key[len(key)-1:]
			if latKey == "=" || latKey == ":" {
				// make sure we don't add a space after ':' or '='
				directive = cobra.ShellCompDirectiveNoSpace | cobra.ShellCompDirectiveNoFileComp
			}
		}
	}
	return suggestions, directive
}

/* Autocomplete Functions for cobra ValidArgsFunction */

// AutocompleteContainers - Autocomplete all container names.
func AutocompleteContainers(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getContainers(cmd, toComplete, completeDefault)
}

// AutocompleteContainersCreated - Autocomplete only created container names.
func AutocompleteContainersCreated(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getContainers(cmd, toComplete, completeDefault, "created")
}

// AutocompleteContainersExited - Autocomplete only exited container names.
func AutocompleteContainersExited(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getContainers(cmd, toComplete, completeDefault, "exited")
}

// AutocompleteContainersPaused - Autocomplete only paused container names.
func AutocompleteContainersPaused(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getContainers(cmd, toComplete, completeDefault, "paused")
}

// AutocompleteContainersRunning - Autocomplete only running container names.
func AutocompleteContainersRunning(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getContainers(cmd, toComplete, completeDefault, "running")
}

// AutocompleteContainersStartable - Autocomplete only created and exited container names.
func AutocompleteContainersStartable(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getContainers(cmd, toComplete, completeDefault, "created", "exited")
}

// AutocompletePods - Autocomplete all pod names.
func AutocompletePods(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getPods(cmd, toComplete, completeDefault)
}

// AutocompletePodsRunning - Autocomplete only running pod names.
// It considers degraded as running.
func AutocompletePodsRunning(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getPods(cmd, toComplete, completeDefault, "running", "degraded")
}

// AutocompleteContainersAndPods - Autocomplete container names and pod names.
func AutocompleteContainersAndPods(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	containers, _ := getContainers(cmd, toComplete, completeDefault)
	pods, _ := getPods(cmd, toComplete, completeDefault)
	return append(containers, pods...), cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteContainersAndImages - Autocomplete container names and pod names.
func AutocompleteContainersAndImages(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	containers, _ := getContainers(cmd, toComplete, completeDefault)
	images, _ := getImages(cmd, toComplete)
	return append(containers, images...), cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteVolumes - Autocomplete volumes.
func AutocompleteVolumes(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getVolumes(cmd, toComplete)
}

// AutocompleteImages - Autocomplete images.
func AutocompleteImages(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getImages(cmd, toComplete)
}

// AutocompleteCreateRun - Autocomplete only the fist argument as image and then do file completion.
func AutocompleteCreateRun(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	if len(args) < 1 {
		return getImages(cmd, toComplete)
	}
	// TODO: add path completion for files in the image
	return nil, cobra.ShellCompDirectiveDefault
}

// AutocompleteRegistries - Autocomplete registries.
func AutocompleteRegistries(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getRegistries()
}

// AutocompleteNetworks - Autocomplete networks.
func AutocompleteNetworks(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return getNetworks(cmd, toComplete)
}

// AutocompleteCpCommand - Autocomplete podman cp command args.
func AutocompleteCpCommand(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	if len(args) < 2 {
		containers, _ := getContainers(cmd, toComplete, completeDefault)
		for _, container := range containers {
			// TODO: Add path completion for inside the container if possible
			if strings.HasPrefix(container, toComplete) {
				return containers, cobra.ShellCompDirectiveNoSpace
			}
		}
		// else complete paths
		return nil, cobra.ShellCompDirectiveDefault
	}
	// don't complete more than 2 args
	return nil, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteNetworkConnectCmd - Autocomplete podman network connect/disconnect command args.
func AutocompleteNetworkConnectCmd(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if len(args) == 0 {
		return getNetworks(cmd, toComplete)
	}
	if len(args) == 1 {
		return getContainers(cmd, toComplete, completeDefault)
	}
	// don't complete more than 2 args
	return nil, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteSystemConnections - Autocomplete system connections.
func AutocompleteSystemConnections(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if !validCurrentCmdLine(cmd, args, toComplete) {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	suggestions := []string{}
	cfg, err := config.ReadCustomConfig()
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}

	for k, v := range cfg.Engine.ServiceDestinations {
		// the URI will be show as description in shells like zsh
		suggestions = append(suggestions, k+"\t"+v.URI)
	}

	return suggestions, cobra.ShellCompDirectiveNoFileComp
}

/* -------------- Flags ----------------- */

// AutocompleteDetachKeys - Autocomplete detach-keys options.
// -> "ctrl-"
func AutocompleteDetachKeys(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if strings.HasSuffix(toComplete, ",") {
		return []string{toComplete + "ctrl-"}, cobra.ShellCompDirectiveNoSpace
	}
	return []string{"ctrl-"}, cobra.ShellCompDirectiveNoSpace
}

// AutocompleteChangeInstructions - Autocomplete change instructions options for commit and import.
// -> "CMD", "ENTRYPOINT", "ENV", "EXPOSE", "LABEL", "ONBUILD", "STOPSIGNAL", "USER", "VOLUME", "WORKDIR"
func AutocompleteChangeInstructions(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	return ChangeCmds, cobra.ShellCompDirectiveNoSpace
}

// AutocompleteImageFormat - Autocomplete image format options.
// -> "oci", "docker"
func AutocompleteImageFormat(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	ImageFormat := []string{"oci", "docker"}
	return ImageFormat, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteCreateAttach - Autocomplete create --attach options.
// -> "stdin", "stdout", "stderr"
func AutocompleteCreateAttach(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	return []string{"stdin", "stdout", "stderr"}, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteNamespace - Autocomplete namespace options.
// -> host,container:[name],ns:[path],private
func AutocompleteNamespace(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	kv := keyValueCompletion{
		"container:": func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeDefault) },
		"ns:":        func(s string) ([]string, cobra.ShellCompDirective) { return nil, cobra.ShellCompDirectiveDefault },
		"host":       nil,
		"private":    nil,
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompleteUserNamespace - Autocomplete namespace options.
// -> same as AutocompleteNamespace with "auto", "keep-id" added
func AutocompleteUserNamespace(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	results, directive := AutocompleteNamespace(cmd, args, toComplete)
	results = append(results, "auto", "keep-id")
	return results, directive
}

// AutocompleteCgroupMode - Autocomplete cgroup mode options.
// -> "enabled", "disabled", "no-conmon", "split"
func AutocompleteCgroupMode(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	cgroupModes := []string{"enabled", "disabled", "no-conmon", "split"}
	return cgroupModes, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteImageVolume - Autocomplete image volume options.
// -> "bind", "tmpfs", "ignore"
func AutocompleteImageVolume(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	imageVolumes := []string{"bind", "tmpfs", "ignore"}
	return imageVolumes, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteLogDriver - Autocomplete log-driver options.
// -> "journald", "none", "k8s-file"
func AutocompleteLogDriver(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	// don't show json-file
	logDrivers := []string{define.JournaldLogging, define.NoLogging, define.KubernetesLogging}
	return logDrivers, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteLogOpt - Autocomplete log-opt options.
// -> "path=", "tag="
func AutocompleteLogOpt(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	// FIXME: are these the only one? the man page states these but in the current shell completion they are more options
	logOptions := []string{"path=", "tag="}
	if strings.HasPrefix(toComplete, "path=") {
		return nil, cobra.ShellCompDirectiveDefault
	}
	return logOptions, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
}

// AutocompletePullOption - Autocomplete pull options for create and run command.
// -> "always", "missing", "never"
func AutocompletePullOption(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	pullOptions := []string{"always", "missing", "never"}
	return pullOptions, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteRestartOption - Autocomplete restart options for create and run command.
// -> "always", "no", "on-failure", "unless-stopped"
func AutocompleteRestartOption(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	restartOptions := []string{libpod.RestartPolicyAlways, libpod.RestartPolicyNo,
		libpod.RestartPolicyOnFailure, libpod.RestartPolicyUnlessStopped}
	return restartOptions, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteSecurityOption - Autocomplete security options options.
func AutocompleteSecurityOption(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	kv := keyValueCompletion{
		"apparmor=":         nil,
		"no-new-privileges": nil,
		"seccomp=":          func(s string) ([]string, cobra.ShellCompDirective) { return nil, cobra.ShellCompDirectiveDefault },
		"label=": func(s string) ([]string, cobra.ShellCompDirective) {
			if strings.HasPrefix(s, "d") {
				return []string{"disable"}, cobra.ShellCompDirectiveNoFileComp
			}
			return []string{"user:", "role:", "type:", "level:", "filetype:", "disable"}, cobra.ShellCompDirectiveNoSpace | cobra.ShellCompDirectiveNoFileComp
		},
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompleteStopSignal - Autocomplete stop signal options.
// -> "SIGHUP", "SIGINT", "SIGKILL", "SIGTERM"
func AutocompleteStopSignal(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	// FIXME: add more/different signals?
	stopSignals := []string{"SIGHUP", "SIGINT", "SIGKILL", "SIGTERM"}
	return stopSignals, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteSystemdFlag - Autocomplete systemd flag options.
// -> "true", "false", "always"
func AutocompleteSystemdFlag(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	systemd := []string{"true", "false", "always"}
	return systemd, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteUserFlag - Autocomplete user flag based on the names and groups (includes ids after first char) in /etc/passwd and /etc/group files.
// -> user:group
func AutocompleteUserFlag(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	if strings.Contains(toComplete, ":") {
		// It would be nice to read the file in the image
		// but at this point we don't know the image.
		file, err := os.Open("/etc/group")
		if err != nil {
			cobra.CompErrorln(err.Error())
			return nil, cobra.ShellCompDirectiveNoFileComp
		}
		defer file.Close()

		var groups []string
		scanner := bufio.NewScanner(file)
		user := strings.SplitN(toComplete, ":", 2)[0]
		for scanner.Scan() {
			entries := strings.SplitN(scanner.Text(), ":", 4)
			groups = append(groups, user+":"+entries[0])
			// complete ids after at least one char is given
			if len(user)+1 < len(toComplete) {
				groups = append(groups, user+":"+entries[2])
			}
		}
		if err = scanner.Err(); err != nil {
			cobra.CompErrorln(err.Error())
			return nil, cobra.ShellCompDirectiveNoFileComp
		}
		return groups, cobra.ShellCompDirectiveNoFileComp
	}

	// It would be nice to read the file in the image
	// but at this point we don't know the image.
	file, err := os.Open("/etc/passwd")
	if err != nil {
		cobra.CompErrorln(err.Error())
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	defer file.Close()

	var users []string
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		entries := strings.SplitN(scanner.Text(), ":", 7)
		users = append(users, entries[0]+":")
		// complete ids after at least one char is given
		if len(toComplete) > 0 {
			users = append(users, entries[2]+":")
		}
	}
	if err = scanner.Err(); err != nil {
		return nil, cobra.ShellCompDirectiveNoFileComp
	}
	return users, cobra.ShellCompDirectiveNoSpace
}

// AutocompleteMountFlag - Autocomplete mount flag options.
// -> "type=bind,", "type=volume,", "type=tmpfs,"
func AutocompleteMountFlag(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"type=bind,", "type=volume,", "type=tmpfs,"}
	// TODO: Add support for all different options
	return types, cobra.ShellCompDirectiveNoSpace
}

// AutocompleteVolumeFlag - Autocomplete volume flag options.
// -> volumes and paths
func AutocompleteVolumeFlag(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	volumes, _ := getVolumes(cmd, toComplete)
	directive := cobra.ShellCompDirectiveNoSpace | cobra.ShellCompDirectiveDefault
	if strings.Contains(toComplete, ":") {
		// add space after second path
		directive = cobra.ShellCompDirectiveDefault
	}
	return volumes, directive
}

// AutocompleteJSONFormat - Autocomplete format flag option.
// -> "json"
func AutocompleteJSONFormat(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	return []string{"json"}, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteEventFilter - Autocomplete event filter flag options.
// -> "container=", "event=", "image=", "pod=", "volume=", "type="
func AutocompleteEventFilter(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	eventTypes := func(_ string) ([]string, cobra.ShellCompDirective) {
		return []string{"attach", "checkpoint", "cleanup", "commit", "create", "exec",
			"export", "import", "init", "kill", "mount", "pause", "prune", "remove",
			"restart", "restore", "start", "stop", "sync", "unmount", "unpause",
			"pull", "push", "save", "tag", "untag", "refresh", "renumber",
		}, cobra.ShellCompDirectiveNoFileComp
	}
	kv := keyValueCompletion{
		"container=": func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeDefault) },
		"image=":     func(s string) ([]string, cobra.ShellCompDirective) { return getImages(cmd, s) },
		"pod=":       func(s string) ([]string, cobra.ShellCompDirective) { return getPods(cmd, s, completeDefault) },
		"volume=":    func(s string) ([]string, cobra.ShellCompDirective) { return getVolumes(cmd, s) },
		"event=":     eventTypes,
		"type=":      eventTypes,
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompleteSystemdRestartOptions - Autocomplete systemd restart options.
// -> "no", "on-success", "on-failure", "on-abnormal", "on-watchdog", "on-abort", "always"
func AutocompleteSystemdRestartOptions(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	return systemdGen.RestartPolicies, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteTrustType - Autocomplete trust type options.
// -> "signedBy", "accept", "reject"
func AutocompleteTrustType(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"signedBy", "accept", "reject"}
	return types, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteImageSort - Autocomplete images sort options.
// -> "created", "id", "repository", "size", "tag"
func AutocompleteImageSort(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	sortBy := []string{"created", "id", "repository", "size", "tag"}
	return sortBy, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteInspectType - Autocomplete inspect type options.
// -> "container", "image", "all"
func AutocompleteInspectType(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"container", "image", "all"}
	return types, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteManifestFormat - Autocomplete manifest format options.
// -> "oci", "v2s2"
func AutocompleteManifestFormat(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"oci", "v2s2"}
	return types, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteNetworkDriver - Autocomplete network driver option.
// -> "bridge"
func AutocompleteNetworkDriver(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	drivers := []string{"bridge"}
	return drivers, cobra.ShellCompDirectiveNoFileComp
}

// AutocompletePodShareNamespace - Autocomplete pod create --share flag option.
// -> "ipc", "net", "pid", "user", "uts", "cgroup", "none"
func AutocompletePodShareNamespace(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	namespaces := []string{"ipc", "net", "pid", "user", "uts", "cgroup", "none"}
	return namespaces, cobra.ShellCompDirectiveNoFileComp
}

// AutocompletePodPsSort - Autocomplete images sort options.
// -> "created", "id", "name", "status", "number"
func AutocompletePodPsSort(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	sortBy := []string{"created", "id", "name", "status", "number"}
	return sortBy, cobra.ShellCompDirectiveNoFileComp
}

// AutocompletePsSort - Autocomplete images sort options.
// -> "command", "created", "id", "image", "names", "runningfor", "size", "status"
func AutocompletePsSort(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	sortBy := []string{"command", "created", "id", "image", "names", "runningfor", "size", "status"}
	return sortBy, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteImageSaveFormat - Autocomplete image save format options.
// -> "oci-archive", "oci-dir", "docker-dir"
func AutocompleteImageSaveFormat(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	formats := []string{"oci-archive", "oci-dir", "docker-dir"}
	return formats, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteWaitCondition - Autocomplete wait condition options.
// -> "unknown", "configured", "created", "running", "stopped", "paused", "exited", "removing"
func AutocompleteWaitCondition(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	states := []string{"unknown", "configured", "created", "running", "stopped", "paused", "exited", "removing"}
	return states, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteCgroupManager - Autocomplete cgroup manager options.
// -> "cgroupfs", "systemd"
func AutocompleteCgroupManager(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"cgroupfs", "systemd"}
	return types, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteEventBackend - Autocomplete event backend options.
// -> "file", "journald", "none"
func AutocompleteEventBackend(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"file", "journald", "none"}
	return types, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteLogLevel - Autocomplete log level options.
// -> "debug", "info", "warn", "error", "fatal", "panic"
func AutocompleteLogLevel(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	return LogLevels, cobra.ShellCompDirectiveNoFileComp
}

// AutocompleteSDNotify - Autocomplete sdnotify options.
// -> "container", "conmon", "ignore"
func AutocompleteSDNotify(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	types := []string{"container", "conmon", "ignore"}
	return types, cobra.ShellCompDirectiveNoFileComp
}

var containerStatuses = []string{"created", "running", "paused", "stopped", "exited", "unknown"}

// AutocompletePsFilters - Autocomplete ps filter options.
func AutocompletePsFilters(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	kv := keyValueCompletion{
		"id=":   func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeIDs) },
		"name=": func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeNames) },
		"status=": func(_ string) ([]string, cobra.ShellCompDirective) {
			return containerStatuses, cobra.ShellCompDirectiveNoFileComp
		},
		"ancestor": func(s string) ([]string, cobra.ShellCompDirective) { return getImages(cmd, s) },
		"before=":  func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeDefault) },
		"since=":   func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeDefault) },
		"volume=":  func(s string) ([]string, cobra.ShellCompDirective) { return getVolumes(cmd, s) },
		"health=": func(_ string) ([]string, cobra.ShellCompDirective) {
			return []string{define.HealthCheckHealthy,
				define.HealthCheckUnhealthy}, cobra.ShellCompDirectiveNoFileComp
		},
		"label=":  nil,
		"exited=": nil,
		"until=":  nil,
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompletePodPsFilters - Autocomplete pod ps filter options.
func AutocompletePodPsFilters(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	kv := keyValueCompletion{
		"id=":   func(s string) ([]string, cobra.ShellCompDirective) { return getPods(cmd, s, completeIDs) },
		"name=": func(s string) ([]string, cobra.ShellCompDirective) { return getPods(cmd, s, completeNames) },
		"status=": func(_ string) ([]string, cobra.ShellCompDirective) {
			return []string{"stopped", "running",
				"paused", "exited", "dead", "created", "degraded"}, cobra.ShellCompDirectiveNoFileComp
		},
		"ctr-ids=":    func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeIDs) },
		"ctr-names=":  func(s string) ([]string, cobra.ShellCompDirective) { return getContainers(cmd, s, completeNames) },
		"ctr-number=": nil,
		"ctr-status=": func(_ string) ([]string, cobra.ShellCompDirective) {
			return containerStatuses, cobra.ShellCompDirectiveNoFileComp
		},
		"label=": nil,
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompleteImageFilters - Autocomplete image ls --filter options.
func AutocompleteImageFilters(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	getBool := func(_ string) ([]string, cobra.ShellCompDirective) {
		return []string{"true", "false"}, cobra.ShellCompDirectiveNoFileComp
	}
	getImg := func(s string) ([]string, cobra.ShellCompDirective) { return getImages(cmd, s) }
	kv := keyValueCompletion{
		"before=":    getImg,
		"since=":     getImg,
		"label=":     nil,
		"reference=": nil,
		"dangling=":  getBool,
		"readonly=":  getBool,
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompleteNetworkFilters - Autocomplete network ls --filter options.
func AutocompleteNetworkFilters(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	kv := keyValueCompletion{
		"name=":   func(s string) ([]string, cobra.ShellCompDirective) { return getNetworks(cmd, s) },
		"plugin=": nil,
	}
	return completeKeyValues(toComplete, kv)
}

// AutocompleteVolumeFilters - Autocomplete volume ls --filter options.
func AutocompleteVolumeFilters(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	local := func(_ string) ([]string, cobra.ShellCompDirective) {
		return []string{"local"}, cobra.ShellCompDirectiveNoFileComp
	}
	kv := keyValueCompletion{
		"name=":   func(s string) ([]string, cobra.ShellCompDirective) { return getVolumes(cmd, s) },
		"driver=": local,
		"scope=":  local,
		"label=":  nil,
		"opt=":    nil,
		"dangling=": func(_ string) ([]string, cobra.ShellCompDirective) {
			return []string{"true", "false"}, cobra.ShellCompDirectiveNoFileComp
		},
	}
	return completeKeyValues(toComplete, kv)
}