-
Notifications
You must be signed in to change notification settings - Fork 71
/
apheleia-formatters.el
1334 lines (1259 loc) 路 57.9 KB
/
apheleia-formatters.el
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
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
;;; apheleia-formatters.el --- Run formatters -*- lexical-binding: t -*-
;; SPDX-License-Identifier: MIT
;;; Commentary:
;; This module defines a series of functions for running a formatter process
;; or formatter function and generating a RCS patch from the result.
;;; Code:
(require 'apheleia-formatter-context)
(require 'apheleia-log)
(require 'apheleia-utils)
(require 'cl-lib)
(require 'map)
(require 'subr-x)
(eval-when-compile
(require 'rx))
(defcustom apheleia-formatters
'((astyle . ("astyle" (apheleia-formatters-locate-file
"--options" ".astylerc")))
(asmfmt . ("asmfmt"))
(bean-format . ("bean-format"))
(beautysh . ("beautysh"
(apheleia-formatters-indent
"--tab" "--indent-size" 'sh-basic-offset)
"-"))
(black . ("black"
(when (apheleia-formatters-extension-p "pyi") "--pyi")
(apheleia-formatters-fill-column "--line-length")
"-"))
(brittany . ("brittany"))
(buildifier . ("buildifier"))
(caddyfmt . ("caddy" "fmt" "-"))
(clang-format . ("clang-format"
"-assume-filename"
(or (apheleia-formatters-local-buffer-file-name)
(apheleia-formatters-mode-extension)
".c")))
(cljfmt . ("cljfmt" "fix" "-"))
(cmake-format . ("cmake-format" "-"))
(crystal-tool-format . ("crystal" "tool" "format" "-"))
(css-beautify "css-beautify" "--file" "-" "--end-with-newline"
(apheleia-formatters-indent
"--indent-with-tabs" "--indent-size"))
(dart-format . ("dart" "format"))
(denofmt . ("deno" "fmt" "-"))
(denofmt-js . ("deno" "fmt" "-" "--ext" "js"))
(denofmt-json . ("deno" "fmt" "-" "--ext" "json"))
(denofmt-jsonc . ("deno" "fmt" "-" "--ext" "jsonc"))
(denofmt-jsx . ("deno" "fmt" "-" "--ext" "jsx"))
(denofmt-md . ("deno" "fmt" "-" "--ext" "md"))
(denofmt-ts . ("deno" "fmt" "-" "--ext" "ts"))
(denofmt-tsx . ("deno" "fmt" "-" "--ext" "tsx"))
(dhall-format . ("dhall" "format"))
(docformatter . ("apheleia-docformatter" inplace))
(dprint . ("dprint" "fmt" "--stdin" filepath))
(elm-format . ("elm-format" "--yes" "--stdin"))
(fish-indent . ("fish_indent"))
(fourmolu . ("fourmolu"))
(gawk . ("gawk" "-f" "-" "--pretty-print=-"))
(gofmt . ("gofmt"))
(gofumpt . ("gofumpt"))
(goimports . ("goimports"))
(google-java-format . ("google-java-format" "-"))
(hclfmt . ("hclfmt"))
(html-beautify "html-beautify" "--file" "-" "--end-with-newline"
(apheleia-formatters-indent
"--indent-with-tabs" "--indent-size"))
(html-tidy "tidy"
"--quiet" "yes"
"--tidy-mark" "no"
"--vertical-space" "yes"
"-indent"
(when (derived-mode-p 'nxml-mode)
"-xml")
(apheleia-formatters-indent
"--indent-with-tabs" "--indent-spaces")
(apheleia-formatters-fill-column "-wrap"))
(isort . ("isort" "-"))
(js-beautify "js-beautify" "--file" "-" "--end-with-newline"
(apheleia-formatters-indent
"--indent-with-tabs" "--indent-size"))
(jq "jq" "." "-M"
(apheleia-formatters-indent "--tab" "--indent"))
(lisp-indent . apheleia-indent-lisp-buffer)
(ktlint . ("ktlint" "--log-level=none" "--stdin" "-F" "-"))
(latexindent . ("latexindent" "--logfile=/dev/null"))
(mix-format . ("apheleia-from-project-root"
".formatter.exs" "mix" "format" "-"))
(nixfmt . ("nixfmt"))
(ocamlformat . ("ocamlformat" "-" "--name" filepath
"--enable-outside-detected-project"))
(ormolu . ("ormolu"))
(perltidy . ("perltidy" "--quiet" "--standard-error-output"
(apheleia-formatters-indent "-t" "-i")
(apheleia-formatters-fill-column "-l")))
(pgformatter . ("pg_format"
(apheleia-formatters-indent "--tabs" "--spaces" 'tab-width)
(apheleia-formatters-fill-column "--wrap-limit")))
(phpcs . ("apheleia-phpcs"))
(prettier
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-css
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=css"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-html
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=html"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-graphql
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=graphql"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-javascript
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=babel-flow"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-json
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=json"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-markdown
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=markdown"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-ruby
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--plugin=@prettier/plugin-ruby" "--parser=ruby"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-scss
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=scss"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-svelte
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--plugin=prettier-plugin-svelte" "--parser=svelte"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-typescript
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=typescript"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(prettier-yaml
. ("apheleia-npx" "prettier" "--stdin-filepath" filepath
"--parser=yaml"
(apheleia-formatters-js-indent "--use-tabs" "--tab-width")))
(purs-tidy . ("apheleia-npx" "purs-tidy" "format"))
(pyang . ("pyang" "--ignore-errors" "-f" "yang"))
(robotidy . ("robotidy" "--no-color" "-"
(apheleia-formatters-indent nil "--indent")
(apheleia-formatters-fill-column "--line-length")))
(python3-json
. ("python3" "-m" "json.tool"
(apheleia-formatters-indent "--tab" "--indent")))
(rubocop . ("rubocop" "--stdin" filepath "--auto-correct"
"--stderr" "--format" "quiet" "--fail-level" "fatal"))
(ruby-standard . ("standardrb" "--stdin" filepath "--fix" "--stderr"
"--format" "quiet" "--fail-level" "fatal"))
(ruby-syntax-tree . ("apheleia-from-project-root"
".streerc" "stree" "format" filepath))
(ruff . ("ruff" "format"
"--silent"
(apheleia-formatters-fill-column "--line-length")
"--stdin-filename" filepath
"-"))
(ruff-isort . ("ruff" "check"
"-n"
"--select" "I"
"--fix" "--fix-only"
"--stdin-filename" filepath
"-"))
(shfmt . ("shfmt"
"-filename" filepath
"-ln" (cl-case (bound-and-true-p sh-shell)
(sh "posix")
(t "bash"))
(when apheleia-formatters-respect-indent-level
(list
"-i" (number-to-string
(cond
(indent-tabs-mode 0)
((boundp 'sh-basic-offset)
sh-basic-offset)
(t 4)))))
"-"))
(rufo . ("rufo" "--filename" filepath "--simple-exit"))
(stylua . ("stylua" "-"))
(rustfmt . ("rustfmt" "--quiet" "--emit" "stdout"))
(terraform . ("terraform" "fmt" "-"))
(treefmt . ("treefmt" "--stdin" filepath))
(xmllint . ("xmllint" "--format" "-"))
(yapf . ("yapf"))
(yq-csv . ("yq" "--prettyPrint" "--no-colors"
"--input-format" "csv" "--output-format" "csv"))
(yq-json . ("yq" "--prettyPrint" "--no-colors"
"--input-format" "json" "--output-format" "json"
(apheleia-formatters-indent nil "--indent")))
(yq-properties . ("yq" "--prettyPrint" "--no-colors"
"--input-format" "props" "--output-format" "props"))
(yq-tsv . ("yq" "--prettyPrint" "--no-colors"
"--input-format" "tsv" "--output-format" "tsv"))
(yq-xml . ("yq" "--prettyPrint" "--no-colors"
"--input-format" "xml" "--output-format" "xml"
(apheleia-formatters-indent nil "--indent")))
(yq-yaml . ("yq" "--prettyPrint" "--no-colors" "--no-doc"
"--input-format" "yaml" "--output-format" "yaml"
(apheleia-formatters-indent nil "--indent"))))
"Alist of code formatting commands.
The keys may be any symbols you want, and the values are shell
commands, lists of strings and symbols, or a function symbol.
If the value is a function, the function will be called with
keyword arguments (see the implementation of
`apheleia--run-formatter-function' to see which). It should use
`cl-defun' with `&allow-other-keys' for forward compatibility.
Otherwise in Lisp code, the format of commands is similar to what
you pass to `make-process', except as follows.
Normally, the contents of the current buffer are passed to the
command on stdin, and the output is read from stdout. However, if
you use the symbol `file' as one of the elements of commands,
then the filename of the current buffer is substituted for
it. (Use `filepath' instead of `file' if you need the filename of
the current buffer, but you still want its contents to be passed
on stdin.)
If you instead use the symbol `input' as one of the elements of
commands, then the contents of the current buffer are written to
a temporary file and its name is substituted for `input'. Also,
if you use the symbol `output' as one of the elements of
commands, then it is substituted with the name of a temporary
file. In that case, it is expected that the command writes to
that file, and the file is then read into an Emacs buffer.
If you use the symbol `inplace' as one of the elements of the
list, then the contents of the current buffer are written to a
temporary file and its name is substituted for `inplace'.
However, unlike `input', it is expected that the formatter write
the formatted file back to the same file in place. In other
words, `inplace' is like `input' and `output' together.
If you use the symbol `npx' as one of the elements of commands,
then the first string element of the command list is resolved
inside node_modules/.bin if such a directory exists anywhere
above the current `default-directory'.
\(However, instead of using `npx', consider using
\"apheleia-npx\", which is a built-in script that will replicate
the effect, but will also work with Yarn PNP projects and other
npm project types that may exist in the future.)
Any list elements that are not strings and not any of the special
symbols mentioned above will be evaluated when the formatter is
invoked, and spliced into the list. A form can evaluate either to
a string or to a list of strings.
The \"scripts/formatters\" subdirectory of the Apheleia source
repository is automatically prepended to $PATH (variable
`exec-path', to be specific) when invoking external formatters.
This is intended for internal use. If you would like to define
your own script, you can simply place it on your normal $PATH
rather than using this system."
:type '(alist
:key-type symbol
:value-type
(choice
(repeat
(choice
(string :tag "Argument")
(const :tag "Look for command in node_modules/.bin" npx)
(const :tag "TODO: docstring" inplace)
(const :tag "Name of file being formatted" filepath)
(const :tag "Name of real file used for input" file)
(const :tag "Name of temporary file used for input" input)
(const :tag "Name of temporary file used for output" output)))
(function :tag "Formatter function")))
:group 'apheleia)
(defcustom apheleia-mode-alist
'(;; Alphabetical please
(asm-mode . asmfmt)
(awk-mode . gawk)
(bash-ts-mode . shfmt)
(bazel-mode . buildifier)
(beancount-mode . bean-format)
(c++-ts-mode . clang-format)
(caddyfile-mode . caddyfmt)
(cc-mode . clang-format)
(c-mode . clang-format)
(c-ts-mode . clang-format)
(c++-mode . clang-format)
(caml-mode . ocamlformat)
(clojure-mode . cljfmt)
(clojure-ts-mode . cljfmt)
(cmake-mode . cmake-format)
(cmake-ts-mode . cmake-format)
(common-lisp-mode . lisp-indent)
(conf-toml-mode . dprint)
(cperl-mode . perltidy)
(crystal-mode . crystal-tool-format)
(css-mode . prettier-css)
(css-ts-mode . prettier-css)
(dart-mode . dart-format)
(dart-ts-mode . dart-format)
(dockerfile-mode . dprint)
(elixir-mode . mix-format)
(elixir-ts-mode . mix-format)
(elm-mode . elm-format)
(emacs-lisp-mode . lisp-indent)
(fish-mode . fish-indent)
(go-mode . gofmt)
(go-ts-mode . gofmt)
(graphql-mode . prettier-graphql)
(haskell-mode . brittany)
(hcl-mode . hclfmt)
(html-mode . prettier-html)
(html-ts-mode . prettier-html)
(java-mode . google-java-format)
(java-ts-mode . google-java-format)
(jinja2-mode . nil)
(js3-mode . prettier-javascript)
(js-json-mode . prettier-json)
(js-mode . prettier-javascript)
(js-ts-mode . prettier-javascript)
(json-mode . prettier-json)
(json-ts-mode . prettier-json)
(kotlin-mode . ktlint)
(kotlin-ts-mode . ktlint)
(latex-mode . latexindent)
(LaTeX-mode . latexindent)
(lua-mode . stylua)
(lua-ts-mode . stylua)
(lisp-mode . lisp-indent)
;; markdown-mode not included because so many people format
;; markdown code in so many different ways and we don't want to
;; try imposing a standard by default
(nasm-mode . asmfmt)
(nix-mode . nixfmt)
(perl-mode . perltidy)
(php-mode . phpcs)
(purescript-mode . purs-tidy)
(python-mode . black)
(python-ts-mode . black)
(robot-mode . robotidy)
(ruby-mode . prettier-ruby)
(ruby-ts-mode . prettier-ruby)
(rustic-mode . rustfmt)
(rust-mode . rustfmt)
(rust-ts-mode . rustfmt)
(scss-mode . prettier-scss)
(sql-mode . pgformatter)
(svelte-mode . prettier-svelte)
(terraform-mode . terraform)
(TeX-latex-mode . latexindent)
(TeX-mode . latexindent)
(tsx-ts-mode . prettier-typescript)
(tuareg-mode . ocamlformat)
(typescript-mode . prettier-typescript)
(typescript-ts-mode . prettier-typescript)
(web-mode . prettier)
(yaml-mode . prettier-yaml)
(yaml-ts-mode . prettier-yaml)
(yang-mode . pyang))
"Alist mapping major mode names to formatters to use in those modes.
This determines what formatter to use in buffers without a
setting for `apheleia-formatter'. The keys are major mode
symbols (matched against `major-mode' with `derived-mode-p') or
strings (matched against value of variable `buffer-file-name'
with `string-match-p'), and the values are symbols with entries
in `apheleia-formatters' (or equivalently, they are allowed
values for `apheleia-formatter'). Values can be a list of such
symbols causing each formatter in the list to be called one after
the other (with the output of the previous formatter).
Earlier entries in this variable take precedence over later ones.
Be careful when writing regexps to include \"\\'\" and to escape
\"\\.\" in order to properly match a file extension. For example,
to match \".jsx\" files you might use \"\\.jsx\\'\".
If a given mode derives from another mode (e.g. `php-mode' and
`cc-mode'), then whichever entry in the alist is more specific
will apply. In the case that multiple modes match
`derived-mode-p' for the current buffer but neither derives from
the other, whichever entry comes first will be used.
The value for a major mode can be nil (equivalently, an empty
list). This means to use no formatter. This can be helpful in
case your major mode derives from a more general one, but you
don't want the more general formatter to apply to the derived
mode."
:type '(alist
:key-type
(choice (symbol :tag "Major mode")
(string :tag "Buffer name regexp"))
:value-type
(choice (symbol :tag "Formatter")
(repeat
(symbol :tag "Formatter"))))
:group 'apheleia)
(defun apheleia-mhtml-mode-predicate ()
"Return `mhtml-mode' if the user is in that mode.
This checks text properties because `mhtml-mode' sets
`major-mode' to different values depending on where the user is
in the buffer."
(when (get-text-property
(if (and (eobp) (not (bobp)))
(1- (point))
(point))
'mhtml-submode)
#'mhtml-mode))
;;;###autoload
(defcustom apheleia-mode-predicates '(apheleia-mhtml-mode-predicate)
"List of predicates that check for sneaky major modes.
Sometimes a major mode will set `major-mode' to something other
than itself, making it hard to correctly detect what major mode
is active. In such cases you can add a predicate to this list to
handle it. Predicates take no arguments, are run in the current
buffer, and should return the name of a mode if one is detected.
If all the predicates return nil, or if there aren't any in the
list, then only the value of `major-mode' is used to determine
the major mode. The detected major mode affects the selection
from `apheleia-mode-alist'."
:type '(repeat function)
:group 'apheleia)
(defcustom apheleia-formatter-exited-hook nil
"Abnormal hook run after a formatter has finished running.
Must accept arbitrary keyword arguments. The following arguments
are defined at present:
`:formatter' - The symbol for the formatter that was run.
`:error' - Non-nil if the formatter failed, nil if it succeeded.
`:log' - The log buffer for that formatter, or nil if there is
none (e.g., because logging is not enabled).
This hook is run before `apheleia-after-format-hook', and may be
run multiple times if `apheleia-mode-alist' configures multiple
formatters to run in a chain, with one run per formatter."
:type 'hook
:group 'apheleia)
(defcustom apheleia-remote-algorithm 'cancel
"How `apheleia' should process remote files/buffers.
Set to `cancel' to immediately fail whenever you try to format a remote
buffer.
Set to `remote' to make apheleia spawn the process and any other temporary
files on the same remote machine the buffer is on. Note due to restrictions
with `tramp' when this option is set `apheleia' will run any formatters
synchronously, meaning Emacs will block until formatting the buffer finishes.
For more information see:
https://www.mail-archive.com/[email protected]/msg05623.html
Set to `local' to make `apheleia' run the formatter on the current machine
and then write the formatted output back to the remote machine. Note some
features of `apheleia' (such as `file' in `apheleia-formatters') is not
compatible with this option and formatters relying on them will crash."
:type '(choice (const :tag "Run the formatter on the local machine" local)
(const :tag "Run the formatter on the remote machine" remote)
(const :tag "Disable formatting for remote buffers" cancel))
:group 'apheleia)
(defvar-local apheleia--current-process nil
"Current process that Apheleia is running, or nil.
Keeping track of this helps avoid running more than one process
at once.")
(cl-defun apheleia--make-process
(&key name stdin stdout stderr command
remote noquery connection-type callback)
"Helper to run a formatter process asynchronously.
This starts a formatter process using COMMAND and then connects
STDIN, STDOUT and STDERR buffers to the processes different
streams. Once the process is finished CALLBACK will be invoked
with the exit-code of the formatter process as well as a boolean
saying whether the process was interrupted before completion.
REMOTE if supplied will be passed as the FILE-HANDLER argument to
`make-process'.
See `make-process' for a description of the NAME and NOQUERY
arguments."
(apheleia--log
'process "Using make-process to create process %s with %S" name command)
(let ((proc
(make-process
:name name
:buffer stdout
:stderr stderr
:command command
:file-handler remote
:noquery noquery
:connection-type connection-type
:sentinel
(lambda (proc _event)
(unless (process-live-p proc)
(funcall
callback
(process-exit-status proc)
(process-get proc :interrupted)))))))
(set-process-sentinel (get-buffer-process stderr) #'ignore)
(when stdin
(apheleia--log
'process
"Sending %d bytes to stdin of process %s" (buffer-size stdin) name)
(set-process-coding-system
proc
nil
(buffer-local-value 'buffer-file-coding-system stdin))
(process-send-string
proc
(with-current-buffer stdin
(buffer-string))))
(process-send-eof proc)
proc))
(cl-defun apheleia--call-process
(&key name stdin stdout stderr command
remote noquery connection-type callback)
"Helper to synchronously run a formatter process.
This function essentially runs COMMAND synchronously passing STDIN
as standard input and saving output to the STDOUT and STDERR buffers.
Once the process is finished CALLBACK will be invoked with the exit
code (see `process-exit-status') of the process.
This function accepts all the same arguments as `apheleia--make-process'
for simplicity, however some may not be used. This includes: NAME,
NO-QUERY, and CONNECTION-TYPE."
(ignore name noquery connection-type)
(let* ((run-on-remote (and (eq apheleia-remote-algorithm 'remote)
remote))
(stderr-file (apheleia--make-temp-file run-on-remote "apheleia"))
(args
(append
(list
;; argv[0]
(car command)
;; If stdin we don't delete the STDIN buffer text with
;; `call-process-region'. Otherwise we send no INFILE
;; argument to `call-process'.
(not stdin)
;; stdout buffer and stderr file. `call-process' cannot
;; capture stderr into a separate buffer, the best we can
;; do is save and read from a file.
`(,stdout ,stderr-file)
;; Do not re/display stdout as output is received.
nil)
;; argv[1:]
(cdr command))))
(apheleia--log
'process "Sending stderr for process %s to tempfile %s"
name stderr-file)
(unwind-protect
(let ((exit-status
(cl-letf* ((message (symbol-function #'message))
((symbol-function #'message)
(lambda (format-string &rest args)
(unless (string-prefix-p "Renaming" (car args))
(apply message format-string args)))))
(cond
((and run-on-remote stdin)
;; There's no call-process variant for this, we'll have to
;; copy STDIN to a remote temporary file, create a subshell
;; on the remote that runs the formatter and passes the temp
;; file as stdin and then deletes it.
(let* ((remote-stdin
(apheleia--make-temp-file
run-on-remote "apheleia-stdin"))
;; WARN: This assumes a POSIX compatible shell.
(shell
(or (bound-and-true-p tramp-default-remote-shell)
"sh"))
(shell-command
(concat
(mapconcat #'shell-quote-argument command " ")
" < "
(shell-quote-argument
(apheleia-formatters-local-buffer-file-name
remote-stdin)))))
(unwind-protect
(progn
(with-current-buffer stdin
(apheleia--write-region-silently
nil nil remote-stdin))
(apheleia--log
'process
"Using process-file to create process %s with %S"
name (list shell "-c" shell-command))
(process-file
shell nil (nth 2 args) nil "-c" shell-command))
(delete-file remote-stdin))))
(stdin
(apheleia--log
'process
"Using call-process-region to create process %s with %S"
name command)
(with-current-buffer stdin
(apply #'call-process-region
(point-min) (point-max) args)))
(run-on-remote
(apheleia--log
'process
"Using process-file to create process %s with %S"
name command)
(apply #'process-file args))
(t
(apheleia--log
'process
"Using process-file to create process %s with %S"
name command)
(apply #'call-process args))))))
;; Save stderr from STDERR-FILE back into the STDERR buffer.
(with-current-buffer stderr
(insert-file-contents stderr-file))
;; I don't think it's possible to get here if the process
;; was interrupted, since we were running it synchronously,
;; so it should be ok to assume we pass nil to the callback.
(funcall callback exit-status nil)
;; We return nil because there's no live process that can be
;; returned.
nil)
(delete-file stderr-file))))
(cl-defun apheleia--execute-formatter-process
(&key ctx callback ensure exit-status)
"Wrapper for `make-process' that behaves a bit more nicely.
CTX is a formatter process context (see
`apheleia-formatter--context'). CALLBACK is invoked with two
arguments. The first is an error or nil. The second is the buffer
containing the text from stdout, when the process terminates (if
it succeeds). ENSURE is a callback that's invoked whether the
process exited successfully or not. EXIT-STATUS is a function
which is called with the exit status of the command; it should
return non-nil to indicate that the command succeeded. If
EXIT-STATUS is omitted, then the command succeeds provided that
its exit status is 0."
(apheleia--log
'process "Trying to execute formatter process %s with %S"
(apheleia-formatter--name ctx)
`(,(apheleia-formatter--arg1 ctx)
,@(apheleia-formatter--argv ctx)))
(when (process-live-p apheleia--current-process)
(apheleia--log
'process "Interrupting an existing process %S" apheleia--current-process)
(message "Interrupting %s" apheleia--current-process)
(process-put apheleia--current-process :interrupted t)
(interrupt-process apheleia--current-process)
(accept-process-output apheleia--current-process 0.1 nil 'just-this-one)
(when (process-live-p apheleia--current-process)
(kill-process apheleia--current-process)))
(let* ((name (file-name-nondirectory (apheleia-formatter--arg1 ctx)))
(stdout (generate-new-buffer
(format " *apheleia-%s-stdout*" name)))
(stderr (generate-new-buffer
(format " *apheleia-%s-stderr*" name)))
(log-name (apheleia-log--buffer-name name)))
(condition-case-unless-debug e
(progn
(setq apheleia--current-process
(funcall
(if (apheleia-formatter--remote ctx)
#'apheleia--call-process
#'apheleia--make-process)
:name (format "apheleia-%s" name)
:stdin (apheleia-formatter--stdin ctx)
:stdout stdout
:stderr stderr
:command `(,(apheleia-formatter--arg1 ctx)
,@(apheleia-formatter--argv ctx))
:remote (apheleia-formatter--remote ctx)
:connection-type 'pipe
:noquery t
:callback
(lambda (proc-exit-status proc-interrupted)
(apheleia--log
'process
"Process %s exited with status %S%s"
name
proc-exit-status
(if proc-interrupted
" (interrupted)"
" (not interrupted)"))
(setf (apheleia-formatter--exit-status ctx)
proc-exit-status)
(let ((exit-ok (and
(not proc-interrupted)
(funcall
(or exit-status #'zerop)
(apheleia-formatter--exit-status ctx)))))
;; Append standard-error from current formatter
;; to log buffer when
;; `apheleia-log-only-errors' is nil or the
;; formatter failed. Every process output is
;; delimited by a line-feed character.
(unless (and exit-ok apheleia-log-only-errors)
(apheleia-log--formatter-result
ctx
log-name
exit-ok
(buffer-local-value 'default-directory stdout)
(with-current-buffer stderr
(string-trim (buffer-string)))))
(when (apheleia-formatter--name ctx)
(apheleia--log
'hook
"Invoking apheleia-formatter-exited-hook")
(run-hook-with-args
'apheleia-formatter-exited-hook
:formatter (apheleia-formatter--name ctx)
:error (not exit-ok)
:log (get-buffer log-name)))
(unwind-protect
(if exit-ok
(funcall callback nil stdout)
(let ((errmsg
(format
(concat
"Failed to run %s: exit status %s "
"(see %s %s)")
(apheleia-formatter--arg1 ctx)
proc-exit-status
(if (string-prefix-p " " log-name)
"hidden buffer"
"buffer")
(string-trim log-name))))
(message "%s" errmsg)
(when noninteractive
(message
"%s"
(concat
"(log buffer shown"
" below in batch mode)\n"
(with-current-buffer log-name
(buffer-string)))))
(funcall
callback (cons 'error errmsg) nil)))
(when ensure
(funcall ensure))
(ignore-errors
(kill-buffer stdout))
(ignore-errors
(kill-buffer stderr))))))))
(error
(ignore-errors
(kill-buffer stdout))
(ignore-errors
(kill-buffer stderr))
(message "Failed to run %s: %s" name (error-message-string e))))))
(defun apheleia--write-region-silently
(start end filename &optional
append visit lockname mustbenew write-region)
"Like `write-region', but silent.
START, END, FILENAME, APPEND, VISIT, LOCKNAME, and MUSTBENEW are
as in `write-region'. WRITE-REGION is used instead of the actual
`write-region' function, if provided."
(funcall (or write-region #'write-region)
start end filename append 0 lockname mustbenew)
(when (or (eq visit t) (stringp visit))
(setq buffer-file-name (if (eq visit t)
filename
visit))
(set-visited-file-modtime)
(set-buffer-modified-p nil)))
(defun apheleia--save-buffer-silently ()
"Save the current buffer to its backing file, silently."
(cl-letf* ((write-region (symbol-function #'write-region))
((symbol-function #'write-region)
(lambda (start end filename &optional
append visit lockname mustbenew)
(apheleia--write-region-silently
start end filename append visit
lockname mustbenew write-region)))
(message (symbol-function #'message))
((symbol-function #'message)
(lambda (format &rest args)
(unless (equal format "Saving file %s...")
(apply message format args))))
;; Avoid triggering `after-set-visited-file-name-hook',
;; which can have various undesired effects in particular
;; major modes. Unfortunately, `write-file' triggers this
;; hook unconditionally even if the filename was not
;; changed, hence this hack :/
(run-hooks (symbol-function #'run-hooks))
((symbol-function #'run-hooks)
(lambda (&rest args)
(unless (equal args '(after-set-visited-file-name-hook))
(apply run-hooks args)))))
(save-buffer)))
(defun apheleia--make-temp-file (remote prefix &optional dir-flag suffix)
"Create a temporary file optionally on a remote machine.
This function calls `make-temp-file' or `make-nearby-temp-file' depending on
the value of REMOTE.
See `make-temp-file' for a description of PREFIX, DIR-FLAG, and SUFFIX."
(funcall
(if remote
#'make-nearby-temp-file
#'make-temp-file)
prefix dir-flag suffix))
(defun apheleia--create-rcs-patch (old-buffer new-buffer remote callback)
"Generate RCS patch from text in OLD-BUFFER to text in NEW-BUFFER.
Once finished, invoke CALLBACK with a buffer containing the patch
as its sole argument.
See `apheleia--run-formatters' for a description of REMOTE."
(apheleia--log
'rcs "Creating RCS patch between buffers with %d and %d bytes"
(buffer-size old-buffer) (buffer-size new-buffer))
;; Make sure at least one of the two buffers is saved to a file. The
;; other one we can feed on stdin.
(let ((old-fname
(with-current-buffer old-buffer
(and (not (buffer-modified-p)) buffer-file-name)))
(new-fname
(with-current-buffer new-buffer
(and (not (buffer-modified-p)) buffer-file-name)))
;; Place any temporary files we must delete in here.
(clear-files nil)
(run-on-remote (and (eq apheleia-remote-algorithm 'remote)
remote)))
(cl-labels ((;; Weird indentation because of differences in Emacs
;; indentation algorithm between 27 and 28
apheleia--make-temp-file-for-rcs-patch
(buffer &optional fname)
;; Ensure there's a file with the contents of `buffer' on the
;; target machine. `fname', if given, refers to an existing
;; file that may not exist on the target machine and needs
;; to be copied over.
(let ((fname-remote (and fname (file-remote-p fname))))
(when (or (not fname)
(not (equal run-on-remote fname-remote)))
(setq fname
(apheleia--make-temp-file run-on-remote "apheleia"))
(push fname clear-files)
(with-current-buffer buffer
(apheleia--write-region-silently
(point-min) (point-max) fname)))
(apheleia-formatters-local-buffer-file-name fname))))
;; Ensure file is on target right machine, or create a copy of it.
(when old-fname
(setq old-fname
(apheleia--make-temp-file-for-rcs-patch old-buffer old-fname)))
(when new-fname
(setq new-fname
(apheleia--make-temp-file-for-rcs-patch new-buffer new-fname)))
;; When neither files have an open file-handle, create one.
(unless (or old-fname new-fname)
(setq new-fname (apheleia--make-temp-file-for-rcs-patch new-buffer))))
(let ((ctx (apheleia-formatter--context)))
(setf (apheleia-formatter--name ctx) nil ; Skip logging on failure
(apheleia-formatter--arg1 ctx) "diff"
(apheleia-formatter--argv ctx) `("--rcs" "--strip-trailing-cr" "--"
,(or old-fname "-")
,(or new-fname "-"))
(apheleia-formatter--remote ctx) remote
(apheleia-formatter--stdin ctx)
(if new-fname old-buffer new-buffer))
(apheleia--execute-formatter-process
:ctx ctx
:callback callback
:ensure
(lambda ()
(dolist (file clear-files)
(ignore-errors
(delete-file file))))
;; Exit status is 0 if no changes, 1 if some changes, and 2 if
;; error.
:exit-status (lambda (status) (memq status '(0 1)))))))
(defun apheleia--safe-buffer-name ()
"Return `buffer-name' without special file-system characters."
;; See https://stackoverflow.com/q/1976007 for a list of supported
;; characters on all systems.
(replace-regexp-in-string
(rx (or "/" "<" ">" ":" "\"" "\\" "|" "?" "*"))
""
(buffer-name)))
(defun apheleia--replq (dest in out)
"Replace all references to IN with OUT in DEST.
This function does not modify DEST in place, it returns a copy."
(setq in (apheleia--ensure-list in))
(mapcar (lambda (arg)
(if (memq arg in)
out
arg))
dest))
(defun apheleia--formatter-context (name command remote &optional stdin-buffer)
"Construct a formatter context for the formatter with NAME and COMMAND.
Returns an `apheleia-formatter--context' object on success and nil if
the formatter is not executable. The returned formatter context may
have some state such as temporary files that the caller is expected
to cleanup.
STDIN-BUFFER is the optional buffer to use when creating a temporary
file for the formatters standard input. REMOTE asserts whether the
buffer being formatted is on a remote machine or the local machine.
See `apheleia--run-formatters' for more details on the usage of REMOTE.
If COMMAND uses the symbol `file' and the current buffer is modified
from what is written to disk, then return nil meaning meaning no
cmd is to be run."
(cl-block nil
(let* ((context (apheleia-formatter--context))
(run-on-remote
(when (eq apheleia-remote-algorithm 'remote)
remote))
;; Whether the machine the process will run on matches
;; the machine the buffer/file is currently on. Either
;; we're running remotely and the buffer is remote or
;; we're not running remotely and the buffer is not
;; remote.
(remote-match (equal run-on-remote remote))
(stdin (or stdin-buffer (current-buffer)))
(command (apply #'list command)))
(setf (apheleia-formatter--name context) name)
(setf (apheleia-formatter--stdin context) stdin)
(setf (apheleia-formatter--remote context) remote)
;; TODO: Support arbitrary package managers, not just NPM.
(when (memq 'npx command)
(setq command (remq 'npx command))
(when remote-match
(when-let ((project-dir
(locate-dominating-file default-directory
"node_modules")))
(let ((binary
(expand-file-name
(car command)
(expand-file-name
".bin"
(expand-file-name "node_modules" project-dir)))))
(when (file-executable-p binary)
(setcar command binary))))))
(when (or (memq 'file command) (memq 'filepath command))
;; Fail when using file but not as the first formatter in this
;; sequence. (But filepath is okay, since it indicates content
;; is not actually being read from the named file.)
(when (memq 'file command)
(when stdin-buffer
(error "Cannot run formatter using `file' in a sequence unless \
it's first in the sequence"))
(unless remote-match
(error "Formatter uses `file' but process will run on different \
machine from the machine file is available on"))
(setq stdin nil)
;; If `buffer-file-name' is nil then there is no backing
;; file, so `buffer-modified-p' should be ignored (it always
;; returns non-nil).
(when (and (buffer-modified-p) buffer-file-name)
(cl-return)))
;; We always strip out the remote-path prefix for file/filepath.
(let ((file-name (apheleia-formatters-local-buffer-file-name
(or buffer-file-name
(concat default-directory
(apheleia--safe-buffer-name))))))
(setq command (apheleia--replq command '(file filepath) file-name))))
(when (or (memq 'input command) (memq 'inplace command))
(let ((input-fname (apheleia--make-temp-file
run-on-remote "apheleia" nil
(when-let ((file-name
(or buffer-file-name
(apheleia--safe-buffer-name))))
(file-name-extension file-name 'period)))))
(with-current-buffer stdin
(apheleia--write-region-silently nil nil input-fname))
(setf (apheleia-formatter--input-fname context) input-fname
(apheleia-formatter--stdin context) nil)
;; Inplace is the same as input but the output file is the
;; input file.
(when (memq 'inplace command)
(setf (apheleia-formatter--output-fname context) input-fname))
(setq command (apheleia--replq
command '(input inplace)
(apheleia-formatters-local-buffer-file-name
input-fname)))))
(when (memq 'output command)
(let ((output-fname (apheleia--make-temp-file
run-on-remote "apheleia")))
(setf (apheleia-formatter--output-fname context) output-fname)
(setq command (apheleia--replq