etc/committer: Teach it how to commit package removal.

* etc/committer.scm.in (hunk-types): New variable.
(<hunk>): Rename hunk-definition? getter to 'hunk-type'.
(diff-info): Mute a git warning by separating file names from arguments with
'--'.  Rename the 'definitions?' variable to 'type'.
Use the 'addition type when a new package addition is detected, 'removal when
removed else #f.
(add-commit-message): Re-indent.
(remove-commit-message): New procedure.
(main)[definitions]: Make commit message conditional depending on whether it
is an addition or removal.
[changes]: Adjust indentation.
This commit is contained in:
Maxim Cournoyer 2022-04-25 22:56:08 -04:00
parent 6c956243bc
commit 5e6efdfeec
No known key found for this signature in database
GPG Key ID: 1260E46482E63562
1 changed files with 91 additions and 73 deletions

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@ -101,12 +101,16 @@ LINE-NO in PORT."
(read-line port)
(loop (1- i) last-top-level-sexp))))))
;;; Whether the hunk contains a newly added package (definition), a removed
;;; package (removal) or something else (#false).
(define hunk-types '(addition removal #false))
(define-record-type <hunk>
(make-hunk file-name
old-line-number
new-line-number
diff-lines
definition?)
type)
hunk?
(file-name hunk-file-name)
;; Line number before the change
@ -115,8 +119,8 @@ LINE-NO in PORT."
(new-line-number hunk-new-line-number)
;; The full diff to be used with "git apply --cached"
(diff-lines hunk-diff-lines)
;; Does this hunk add a definition?
(definition? hunk-definition?))
;; Does this hunk add or remove a package?
(type hunk-type)) ;one of 'hunk-types'
(define* (hunk->patch hunk #:optional (port (current-output-port)))
(let ((file-name (hunk-file-name hunk)))
@ -134,25 +138,30 @@ LINE-NO in PORT."
;; new definitions with changes to existing
;; definitions.
"--unified=1"
"gnu")))
"--" "gnu")))
(define (extract-line-number line-tag)
(abs (string->number
(car (string-split line-tag #\,)))))
(define (read-hunk)
(let loop ((lines '())
(definition? #false))
(type #false))
(let ((line (read-line port 'concat)))
(cond
((eof-object? line)
(values (reverse lines) definition?))
(values (reverse lines) type))
((or (string-prefix? "@@ " line)
(string-prefix? "diff --git" line))
(unget-string port line)
(values (reverse lines) definition?))
(values (reverse lines) type))
(else
(loop (cons line lines)
(or definition?
(string-prefix? "+(define" line))))))))
(or type
(cond
((string-prefix? "+(define" line)
'addition)
((string-prefix? "-(define" line)
'removal)
(else #false)))))))))
(define info
(let loop ((acc '())
(file-name #f))
@ -167,13 +176,13 @@ LINE-NO in PORT."
(match (string-split line #\space)
((_ old-start new-start . _)
(let-values
(((diff-lines definition?) (read-hunk)))
(((diff-lines type) (read-hunk)))
(loop (cons (make-hunk file-name
(extract-line-number old-start)
(extract-line-number new-start)
(cons (string-append line "\n")
diff-lines)
definition?) acc)
type) acc)
file-name)))))
(else (loop acc file-name))))))
(close-pipe port)
@ -263,10 +272,18 @@ corresponding to the top-level definition containing the staged changes."
(listify added))))))))))
'(inputs propagated-inputs native-inputs)))
(define* (add-commit-message file-name variable-name #:optional (port (current-output-port)))
"Print ChangeLog commit message for a change to FILE-NAME adding a definition."
(format port
"gnu: Add ~a.~%~%* ~a (~a): New variable.~%"
(define* (add-commit-message file-name variable-name
#:optional (port (current-output-port)))
"Print ChangeLog commit message for a change to FILE-NAME adding a
definition."
(format port "gnu: Add ~a.~%~%* ~a (~a): New variable.~%"
variable-name file-name variable-name))
(define* (remove-commit-message file-name variable-name
#:optional (port (current-output-port)))
"Print ChangeLog commit message for a change to FILE-NAME removing a
definition."
(format port "gnu: Remove ~a.~%~%* ~a (~a): Delete variable.~%"
variable-name file-name variable-name))
(define* (custom-commit-message file-name variable-name message changelog
@ -345,66 +362,67 @@ modifying."
(()
(display "Nothing to be done.\n" (current-error-port)))
(hunks
(let-values
(((definitions changes)
(partition hunk-definition? hunks)))
(let-values (((definitions changes) (partition hunk-type hunks)))
;; Additions/removals.
(for-each
(lambda (hunk)
(and-let* ((define-line (find (cut string-match "(\\+|-)\\(define" <>)
(hunk-diff-lines hunk)))
(variable-name (and=> (string-tokenize define-line)
second))
(commit-message-proc (match (hunk-type hunk)
('addition add-commit-message)
('removal remove-commit-message))))
(commit-message-proc (hunk-file-name hunk) variable-name)
(let ((port (open-pipe* OPEN_WRITE
"git" "apply"
"--cached"
"--unidiff-zero")))
(hunk->patch hunk port)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot apply")))
;; Additions.
(for-each (lambda (hunk)
(and-let*
((define-line (find (cut string-prefix? "+(define" <>)
(hunk-diff-lines hunk)))
(variable-name (and=> (string-tokenize define-line) second)))
(add-commit-message (hunk-file-name hunk) variable-name)
(let ((port (open-pipe* OPEN_WRITE
"git" "apply"
"--cached"
"--unidiff-zero")))
(hunk->patch hunk port)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot apply")))
(let ((port (open-pipe* OPEN_WRITE "git" "commit" "-F" "-")))
(commit-message-proc (hunk-file-name hunk) variable-name port)
(usleep %delay)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot commit"))))
(usleep %delay))
definitions))
(let ((port (open-pipe* OPEN_WRITE "git" "commit" "-F" "-")))
(add-commit-message (hunk-file-name hunk)
variable-name port)
(usleep %delay)
;; Changes.
(for-each
(match-lambda
((new old . hunks)
(for-each (lambda (hunk)
(let ((port (open-pipe* OPEN_WRITE
"git" "apply"
"--cached"
"--unidiff-zero")))
(hunk->patch hunk port)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot commit"))))
(usleep %delay))
definitions)
;; Changes.
(for-each (match-lambda
((new old . hunks)
(for-each (lambda (hunk)
(let ((port (open-pipe* OPEN_WRITE
"git" "apply"
"--cached"
"--unidiff-zero")))
(hunk->patch hunk port)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot apply")))
(usleep %delay))
hunks)
(define copyright-line
(any (lambda (line) (and=> (string-prefix? "+;;; Copyright ©" line)
(const line)))
(hunk-diff-lines (first hunks))))
(cond
(copyright-line
(add-copyright-line copyright-line))
(else
(let ((port (open-pipe* OPEN_WRITE "git" "commit" "-F" "-")))
(change-commit-message* (hunk-file-name (first hunks))
old new)
(change-commit-message* (hunk-file-name (first hunks))
old new
port)
(usleep %delay)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot commit")))))))
;; XXX: we recompute the hunks here because previous
;; insertions lead to offsets.
(new+old+hunks (diff-info)))))))
(error "Cannot apply")))
(usleep %delay))
hunks)
(define copyright-line
(any (lambda (line) (and=> (string-prefix? "+;;; Copyright ©" line)
(const line)))
(hunk-diff-lines (first hunks))))
(cond
(copyright-line
(add-copyright-line copyright-line))
(else
(let ((port (open-pipe* OPEN_WRITE "git" "commit" "-F" "-")))
(change-commit-message* (hunk-file-name (first hunks))
old new)
(change-commit-message* (hunk-file-name (first hunks))
old new
port)
(usleep %delay)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot commit")))))))
;; XXX: we recompute the hunks here because previous
;; insertions lead to offsets.
(new+old+hunks (diff-info))))))
(apply main (cdr (command-line)))