mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-07 07:26:13 -05:00
2b8a2a6e72
This replaces Automake's `build-aux/mdate-sh' with our own `build-aux/mdate-from-git.scm' to use reproducible timestamps from Git instead. * build-aux/mdate-from-git.scm: New script. * bootstrap: Use it to replace build-aux/mdate-sh. * Makefile.am (EXTRA_DIST): Add it. Change-Id: I17d0a7de9ffea397129c0db1728f86e28a4e245f
89 lines
3.3 KiB
Scheme
Executable file
89 lines
3.3 KiB
Scheme
Executable file
#! /bin/sh
|
||
# -*-scheme-*-
|
||
export LANG=C LANGUAGE=C LC_TIME=C
|
||
export TZ=UTC0
|
||
exec guile --no-auto-compile -L $srcdir -C $srcdir -e '(mdate-from-git)' -s "$0" "$@"
|
||
!#
|
||
|
||
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2024 Janneke Nieuwenhuizen <janneke@gnu.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; This program is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; This program is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
;;;; Commentary:
|
||
;;;
|
||
;;; Usage: mdate-from-git.scm FILE
|
||
;;;
|
||
;;; This script is compatible with Automake's `mdate-sh' but uses the timestamp
|
||
;;; from Git instead of from the file system. Also, it can be appended to
|
||
;;; mdate-sh.
|
||
|
||
;;; As a special exception for Guix, it caters for doc/guix.LANG.texi files that
|
||
;;; are not stored in Git, by using po/doc/guix-manual.LANG.po for the Git
|
||
;;; timestamp. Test doing something like:
|
||
;;;
|
||
;;; build-aux/mdate-from-git.scm doc/guix.de.texi
|
||
;;;
|
||
;;;; Code:
|
||
|
||
(define-module (mdate-from-git)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 popen)
|
||
#:use-module (ice-9 rdelim)
|
||
#:use-module (ice-9 regex)
|
||
#:export (main))
|
||
|
||
(define (pipe-command command)
|
||
(let* ((port (apply open-pipe* OPEN_READ command))
|
||
(output (read-string port)))
|
||
(close-port port)
|
||
output))
|
||
|
||
(define (guix.LANG.texi->guix-manual.LANG.po file-name)
|
||
"Translated manuals doc/guix.LANG.texi are not tracked in Git and are
|
||
generated from po/doc/guix-manual.LANG.po. For such an untraced .TEXI file,
|
||
return its .PO counterpart."
|
||
(let ((m (string-match "doc/guix.([^.]+).texi" file-name)))
|
||
(if (not m) file-name
|
||
(let ((lang (match:substring m 1)))
|
||
(format #f "po/doc/guix-manual.~a.po" lang)))))
|
||
|
||
|
||
;;;
|
||
;;; Entry point.
|
||
;;;
|
||
(define (main args)
|
||
(match args
|
||
((script file-name)
|
||
(let* ((command `("git" "ls-files" "--error-unmatch" "--" ,file-name))
|
||
(tracked? (zero? (with-error-to-port (%make-void-port "w")
|
||
(lambda _
|
||
(with-output-to-port (%make-void-port "w")
|
||
(lambda _ (apply system* command)))))))
|
||
(file-name (if tracked? file-name
|
||
(guix.LANG.texi->guix-manual.LANG.po file-name)))
|
||
(command `("git" "log" "--pretty=format:%ct" "-n1" "--" ,file-name))
|
||
(timestamp (with-error-to-port (%make-void-port "w")
|
||
(lambda _ (pipe-command command))))
|
||
(source-date-epoch (or (getenv "SOURCE_DATE_EPOCH") "1"))
|
||
(timestamp (if (string-null? timestamp) source-date-epoch
|
||
timestamp))
|
||
(time (gmtime (string->number timestamp)))
|
||
(d-m-y (strftime "%-d %B %Y" time)))
|
||
(display d-m-y)))
|
||
(_
|
||
(format (current-error-port) "Usage: mdate-from-git.scm FILE\n")
|
||
(exit 2))))
|