;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2015 Mark H Weaver <mhw@netris.org> ;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; ;;; GNU Guix 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. ;;; ;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>. (define-module (guix build cvs) #:use-module (guix build utils) #:use-module (ice-9 regex) #:use-module (ice-9 ftw) #:export (cvs-fetch)) ;;; Commentary: ;;; ;;; This is the build-side support code of (guix cvs-download). It allows a ;;; CVS repository to be checked out at a specific revision or date. ;;; ;;; Code: (define (find-cvs-directories) (define (enter? path st result) (not (string-suffix? "/CVS" path))) (define (leaf path st result) result) (define (down path st result) result) (define (up path st result) result) (define (skip path st result) (if (and (string-suffix? "/CVS" path) (eqv? 'directory (stat:type st))) (cons path result) result)) (define (error path st errno result) (format (current-error-port) "cvs-fetch: ~a: ~a~%" path (strerror errno))) (sort (file-system-fold enter? leaf down up skip error '() "." lstat) string<?)) (define* (cvs-fetch cvs-root-directory module revision directory #:key (cvs-command "cvs")) "Fetch REVISION from MODULE of CVS-ROOT-DIRECTORY into DIRECTORY. REVISION must either be a date in ISO-8601 format (e.g. \"2012-12-21\") or a CVS tag. Return #t on success, #f otherwise." ;; Use "-z0" because enabling compression leads to hangs during checkout on ;; certain repositories, such as ;; ":pserver:anonymous@cvs.savannah.gnu.org:/sources/gnustandards". (invoke cvs-command "-z0" "-d" cvs-root-directory "checkout" (if (string-match "^[0-9]{4}-[0-9]{2}-[0-9]{2}$" revision) "-D" "-r") revision module) ;; Copy rather than rename in case MODULE and DIRECTORY are on ;; different devices. (copy-recursively module directory) (with-directory-excursion directory (for-each delete-file-recursively (find-cvs-directories))) #t) ;;; cvs.scm ends here