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74 lines
2.7 KiB
Scheme
74 lines
2.7 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
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;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix build cvs)
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#:use-module (guix build utils)
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#:use-module (ice-9 regex)
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#:use-module (ice-9 ftw)
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#:export (cvs-fetch))
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;;; Commentary:
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;;;
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;;; This is the build-side support code of (guix cvs-download). It allows a
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;;; CVS repository to be checked out at a specific revision or date.
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;;;
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;;; Code:
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(define (find-cvs-directories)
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(define (enter? path st result)
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(not (string-suffix? "/CVS" path)))
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(define (leaf path st result) result)
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(define (down path st result) result)
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(define (up path st result) result)
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(define (skip path st result)
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(if (and (string-suffix? "/CVS" path)
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(eqv? 'directory (stat:type st)))
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(cons path result)
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result))
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(define (error path st errno result)
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(format (current-error-port) "cvs-fetch: ~a: ~a~%"
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path (strerror errno)))
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(sort (file-system-fold enter? leaf down up skip error '() "." lstat)
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string<?))
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(define* (cvs-fetch cvs-root-directory module revision directory
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#:key (cvs-command "cvs"))
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"Fetch REVISION from MODULE of CVS-ROOT-DIRECTORY into DIRECTORY. REVISION
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must either be a date in ISO-8601 format (e.g. \"2012-12-21\") or a CVS tag.
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Return #t on success, #f otherwise."
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;; Use "-z0" because enabling compression leads to hangs during checkout on
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;; certain repositories, such as
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;; ":pserver:anonymous@cvs.savannah.gnu.org:/sources/gnustandards".
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(invoke cvs-command "-z0"
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"-d" cvs-root-directory
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"checkout"
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(if (string-match "^[0-9]{4}-[0-9]{2}-[0-9]{2}$" revision)
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"-D" "-r")
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revision
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module)
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;; Copy rather than rename in case MODULE and DIRECTORY are on
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;; different devices.
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(copy-recursively module directory)
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(with-directory-excursion directory
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(for-each delete-file-recursively (find-cvs-directories)))
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#t)
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;;; cvs.scm ends here
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