Add (guix glob).
* guix/glob.scm, tests/glob.scm: New files. * Makefile.am (MODULES): Add guix/glob.scm. (SCM_TESTS): Add tests/glob.scm.
This commit is contained in:
parent
e37944d827
commit
f14c933df1
|
@ -1,5 +1,5 @@
|
||||||
# GNU Guix --- Functional package management for GNU
|
# GNU Guix --- Functional package management for GNU
|
||||||
# Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
|
# Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
|
||||||
# Copyright © 2013 Andreas Enge <andreas@enge.fr>
|
# Copyright © 2013 Andreas Enge <andreas@enge.fr>
|
||||||
# Copyright © 2015, 2017 Alex Kost <alezost@gmail.com>
|
# Copyright © 2015, 2017 Alex Kost <alezost@gmail.com>
|
||||||
# Copyright © 2016, 2018 Mathieu Lirzin <mthl@gnu.org>
|
# Copyright © 2016, 2018 Mathieu Lirzin <mthl@gnu.org>
|
||||||
|
@ -83,6 +83,7 @@ MODULES = \
|
||||||
guix/gnu-maintenance.scm \
|
guix/gnu-maintenance.scm \
|
||||||
guix/upstream.scm \
|
guix/upstream.scm \
|
||||||
guix/licenses.scm \
|
guix/licenses.scm \
|
||||||
|
guix/glob.scm \
|
||||||
guix/git.scm \
|
guix/git.scm \
|
||||||
guix/graph.scm \
|
guix/graph.scm \
|
||||||
guix/cache.scm \
|
guix/cache.scm \
|
||||||
|
@ -314,6 +315,7 @@ SCM_TESTS = \
|
||||||
tests/substitute.scm \
|
tests/substitute.scm \
|
||||||
tests/builders.scm \
|
tests/builders.scm \
|
||||||
tests/derivations.scm \
|
tests/derivations.scm \
|
||||||
|
tests/glob.scm \
|
||||||
tests/grafts.scm \
|
tests/grafts.scm \
|
||||||
tests/ui.scm \
|
tests/ui.scm \
|
||||||
tests/records.scm \
|
tests/records.scm \
|
||||||
|
|
|
@ -0,0 +1,97 @@
|
||||||
|
;;; GNU Guix --- Functional package management for GNU
|
||||||
|
;;; Copyright © 2018 Ludovic Courtès <ludo@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 glob)
|
||||||
|
#:use-module (ice-9 match)
|
||||||
|
#:export (compile-glob-pattern
|
||||||
|
glob-match?))
|
||||||
|
|
||||||
|
;;; Commentary:
|
||||||
|
;;;
|
||||||
|
;;; This is a minimal implementation of "glob patterns" (info "(libc)
|
||||||
|
;;; Globbbing"). It is currently limited to simple patterns and does not
|
||||||
|
;;; support braces and square brackets, for instance.
|
||||||
|
;;;
|
||||||
|
;;; Code:
|
||||||
|
|
||||||
|
(define (wildcard-indices str)
|
||||||
|
"Return the list of indices in STR where wildcards can be found."
|
||||||
|
(let loop ((index 0)
|
||||||
|
(result '()))
|
||||||
|
(if (= index (string-length str))
|
||||||
|
(reverse result)
|
||||||
|
(loop (+ 1 index)
|
||||||
|
(case (string-ref str index)
|
||||||
|
((#\? #\*) (cons index result))
|
||||||
|
(else result))))))
|
||||||
|
|
||||||
|
(define (compile-glob-pattern str)
|
||||||
|
"Return an sexp that represents the compiled form of STR, a glob pattern
|
||||||
|
such as \"foo*\" or \"foo??bar\"."
|
||||||
|
(define flatten
|
||||||
|
(match-lambda
|
||||||
|
(((? string? str)) str)
|
||||||
|
(x x)))
|
||||||
|
|
||||||
|
(let loop ((index 0)
|
||||||
|
(indices (wildcard-indices str))
|
||||||
|
(result '()))
|
||||||
|
(match indices
|
||||||
|
(()
|
||||||
|
(flatten (cond ((zero? index)
|
||||||
|
(list str))
|
||||||
|
((= index (string-length str))
|
||||||
|
(reverse result))
|
||||||
|
(else
|
||||||
|
(reverse (cons (string-drop str index)
|
||||||
|
result))))))
|
||||||
|
((wildcard-index . rest)
|
||||||
|
(let ((wildcard (match (string-ref str wildcard-index)
|
||||||
|
(#\? '?)
|
||||||
|
(#\* '*))))
|
||||||
|
(match (substring str index wildcard-index)
|
||||||
|
("" (loop (+ 1 wildcard-index)
|
||||||
|
rest
|
||||||
|
(cons wildcard result)))
|
||||||
|
(str (loop (+ 1 wildcard-index)
|
||||||
|
rest
|
||||||
|
(cons* wildcard str result)))))))))
|
||||||
|
|
||||||
|
(define (glob-match? pattern str)
|
||||||
|
"Return true if STR matches PATTERN, a compiled glob pattern as returned by
|
||||||
|
'compile-glob-pattern'."
|
||||||
|
(let loop ((pattern pattern)
|
||||||
|
(str str))
|
||||||
|
(match pattern
|
||||||
|
((? string? literal) (string=? literal str))
|
||||||
|
(((? string? one)) (string=? one str))
|
||||||
|
(('*) #t)
|
||||||
|
(('?) (= 1 (string-length str)))
|
||||||
|
(() #t)
|
||||||
|
(('* suffix . rest)
|
||||||
|
(match (string-contains str suffix)
|
||||||
|
(#f #f)
|
||||||
|
(index (loop rest
|
||||||
|
(string-drop str
|
||||||
|
(+ index (string-length suffix)))))))
|
||||||
|
(('? . rest)
|
||||||
|
(and (>= (string-length str) 1)
|
||||||
|
(loop rest (string-drop str 1))))
|
||||||
|
((prefix . rest)
|
||||||
|
(and (string-prefix? prefix str)
|
||||||
|
(loop rest (string-drop str (string-length prefix))))))))
|
|
@ -0,0 +1,58 @@
|
||||||
|
;;; GNU Guix --- Functional package management for GNU
|
||||||
|
;;; Copyright © 2018 Ludovic Courtès <ludo@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 (test-glob)
|
||||||
|
#:use-module (guix glob)
|
||||||
|
#:use-module (srfi srfi-64))
|
||||||
|
|
||||||
|
|
||||||
|
(test-begin "glob")
|
||||||
|
|
||||||
|
(test-equal "compile-glob-pattern, no wildcards"
|
||||||
|
"foo"
|
||||||
|
(compile-glob-pattern "foo"))
|
||||||
|
|
||||||
|
(test-equal "compile-glob-pattern, Kleene star"
|
||||||
|
'("foo" * "bar")
|
||||||
|
(compile-glob-pattern "foo*bar"))
|
||||||
|
|
||||||
|
(test-equal "compile-glob-pattern, question mark"
|
||||||
|
'(? "foo" *)
|
||||||
|
(compile-glob-pattern "?foo*"))
|
||||||
|
|
||||||
|
(test-assert "literal match"
|
||||||
|
(let ((pattern (compile-glob-pattern "foo")))
|
||||||
|
(and (glob-match? pattern "foo")
|
||||||
|
(not (glob-match? pattern "foobar"))
|
||||||
|
(not (glob-match? pattern "barfoo")))))
|
||||||
|
|
||||||
|
(test-assert "trailing star"
|
||||||
|
(let ((pattern (compile-glob-pattern "foo*")))
|
||||||
|
(and (glob-match? pattern "foo")
|
||||||
|
(glob-match? pattern "foobar")
|
||||||
|
(not (glob-match? pattern "xfoo")))))
|
||||||
|
|
||||||
|
(test-assert "question marks"
|
||||||
|
(let ((pattern (compile-glob-pattern "foo??bar")))
|
||||||
|
(and (glob-match? pattern "fooxxbar")
|
||||||
|
(glob-match? pattern "fooZZbar")
|
||||||
|
(not (glob-match? pattern "foobar"))
|
||||||
|
(not (glob-match? pattern "fooxxxbar"))
|
||||||
|
(not (glob-match? pattern "fooxxbarzz")))))
|
||||||
|
|
||||||
|
(test-end "glob")
|
Loading…
Reference in New Issue