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etc/committer: Handle package additions.

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* etc/committer.scm.in (<hunk>)[diff]: Rename this field...
[diff-lines]: ...to this.
[definition?]: New field.
(hunk->patch): Join diff lines.
(diff-info): Do not join diff lines; record whether a hunk is a new
definition.
(commit-message): Rename this procedure...
(change-commit-message): ...to this.
(add-commit-message): New procedure.
(main): Handle new package definitions before changes.
This commit is contained in:
Ricardo Wurmus 2021-04-07 21:20:55 +02:00
parent e1a38cbad8
commit c8c3afe848
No known key found for this signature in database
GPG key ID: 197A5888235FACAC
1 changed files with 80 additions and 33 deletions
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113
etc/committer.scm.in
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@ -3,7 +3,7 @@
!#
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2020, 2021 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; This file is part of GNU Guix.
;;;
@ -28,7 +28,10 @@
(import (sxml xpath)
(srfi srfi-1)
(srfi srfi-2)
(srfi srfi-9)
(srfi srfi-11)
(srfi srfi-26)
(ice-9 format)
(ice-9 popen)
(ice-9 match)
@ -63,7 +66,8 @@ (define-record-type <hunk>
(make-hunk file-name
old-line-number
new-line-number
diff)
diff-lines
definition?)
hunk?
(file-name hunk-file-name)
;; Line number before the change
@ -71,14 +75,16 @@ (define-record-type <hunk>
;; Line number after the change
(new-line-number hunk-new-line-number)
;; The full diff to be used with "git apply --cached"
(diff hunk-diff))
(diff-lines hunk-diff-lines)
;; Does this hunk add a definition?
(definition? hunk-definition?))
(define* (hunk->patch hunk #:optional (port (current-output-port)))
(let ((file-name (hunk-file-name hunk)))
(format port
"diff --git a/~a b/~a~%--- a/~a~%+++ b/~a~%~a"
file-name file-name file-name file-name
(hunk-diff hunk))))
(string-join (hunk-diff-lines hunk) ""))))
(define (diff-info)
"Read the diff and return a list of <hunk> values."
@ -88,21 +94,26 @@ (define (diff-info)
;; Do not include any context lines. This makes it
;; easier to find the S-expression surrounding the
;; change.
"--unified=0")))
"--unified=0"
"gnu")))
(define (extract-line-number line-tag)
(abs (string->number
(car (string-split line-tag #\,)))))
(define (read-hunk)
(reverse
(let loop ((lines '()))
(let ((line (read-line port 'concat)))
(cond
((eof-object? line) lines)
((or (string-prefix? "@@ " line)
(string-prefix? "diff --git" line))
(unget-string port line)
lines)
(else (loop (cons line lines))))))))
(let loop ((lines '())
(definition? #false))
(let ((line (read-line port 'concat)))
(cond
((eof-object? line)
(values (reverse lines) definition?))
((or (string-prefix? "@@ " line)
(string-prefix? "diff --git" line))
(unget-string port line)
(values (reverse lines) definition?))
(else
(loop (cons line lines)
(or definition?
(string-prefix? "+(define" line))))))))
(define info
(let loop ((acc '())
(file-name #f))
@ -116,13 +127,14 @@ (define info
((string-prefix? "@@ " line)
(match (string-split line #\space)
((_ old-start new-start . _)
(loop (cons (make-hunk file-name
(extract-line-number old-start)
(extract-line-number new-start)
(string-join (cons* line "\n"
(read-hunk)) ""))
acc)
file-name))))
(let-values
(((diff-lines definition?) (read-hunk)))
(loop (cons (make-hunk file-name
(extract-line-number old-start)
(extract-line-number new-start)
(cons* line "\n" diff-lines)
definition?) acc)
file-name)))))
(else (loop acc file-name))))))
(close-pipe port)
info))
@ -148,7 +160,7 @@ (define (new-sexp hunk)
(surrounding-sexp port
(hunk-new-line-number hunk)))))
(define* (commit-message file-name old new #:optional (port (current-output-port)))
(define* (change-commit-message file-name old new #:optional (port (current-output-port)))
"Print ChangeLog commit message for changes between OLD and NEW."
(define (get-values expr field)
(match ((sxpath `(// ,field quasiquote *)) expr)
@ -193,6 +205,12 @@ (define version
(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.~%"
variable-name file-name variable-name))
(define (group-hunks-by-sexp hunks)
"Return a list of pairs associating all hunks with the S-expression they are
modifying."
@ -223,9 +241,38 @@ (define (main . args)
(()
(display "Nothing to be done." (current-error-port)))
(hunks
(for-each (match-lambda
((new old . hunks)
(for-each (lambda (hunk)
(let-values
(((definitions changes)
(partition hunk-definition? hunks)))
;; 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" "-")))
(add-commit-message (hunk-file-name hunk)
variable-name port)
(sleep 1)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot commit"))))
(sleep 1))
definitions)
;; Changes.
(for-each (match-lambda
((new old . hunks)
(for-each (lambda (hunk)
(let ((port (open-pipe* OPEN_WRITE
"git" "apply"
"--cached"
@ -235,16 +282,16 @@ (define (main . args)
(error "Cannot apply")))
(sleep 1))
hunks)
(commit-message (hunk-file-name (first hunks))
old new
(current-output-port))
(change-commit-message (hunk-file-name (first hunks))
old new
(current-output-port))
(let ((port (open-pipe* OPEN_WRITE "git" "commit" "-F" "-")))
(commit-message (hunk-file-name (first hunks))
old new
port)
(change-commit-message (hunk-file-name (first hunks))
old new
port)
(sleep 1)
(unless (eqv? 0 (status:exit-val (close-pipe port)))
(error "Cannot commit")))))
(new+old+hunks hunks)))))
(new+old+hunks changes))))))
(main)