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;;; Copyright © 2019 Jelle Licht <jlicht@fsfe.org>
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;;
;;; 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/>.
;; TODO: We should rename the importers:
;; - "texlive" -> "ctan"
;; - "texlive-tlpdb" -> "texlive"
(define-module (guix import texlive-tlpdb)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-9 gnu)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 peg)
#:use-module (guix store)
#:use-module (guix derivations)
#:use-module (guix packages))
;; Define a PEG parser for the tlpdb format
(define-peg-pattern key-name all "name")
(define-peg-pattern key-category all "category")
(define-peg-pattern key-post-action all "postaction")
(define-peg-pattern key-revision all "revision")
(define-peg-pattern key-shortdesc all "shortdesc")
(define-peg-pattern key-longdesc all "longdesc")
(define-peg-pattern key-depend all "depend")
(define-peg-pattern key-catalogue-ctan all "catalogue-ctan")
(define-peg-pattern key-catalogue-contact-repository all "catalogue-contact-repository")
(define-peg-pattern key-catalogue-contact-home all "catalogue-contact-home")
(define-peg-pattern key-catalogue-license all "catalogue-contact-license")
(define-peg-pattern key-catalogue-version all "catalogue-contact-version")
(define-peg-pattern key-catalogue-rest body (and "catalogue" (* (and "-" (+ (range #\a #\z))))))
(define-peg-pattern key-relocated all "relocated")
(define-peg-pattern key-containersize all "containersize")
(define-peg-pattern key-containerchecksum all "containerchecksum")
(define-peg-pattern key-doccontainersize all "doccontainersize")
(define-peg-pattern key-doccontainerchecksum all "doccontainerchecksum")
(define-peg-pattern key-docfiles all "docfiles")
(define-peg-pattern key-srccontainersize all "srccontainersize")
(define-peg-pattern key-srccontainerchecksum all "srccontainerchecksum")
(define-peg-pattern key-srcfiles all "srcfiles")
(define-peg-pattern key-runfiles all "runfiles")
(define-peg-pattern key-binfiles all "binfiles")
(define-peg-pattern key-execute all "execute")
(define-peg-pattern key body (or key-name key-category key-revision
key-shortdesc key-longdesc key-post-action
key-depend key-relocated key-containersize
key-containerchecksum key-doccontainersize
key-doccontainerchecksum key-docfiles
key-srccontainersize key-srccontainerchecksum
key-srcfiles key-runfiles key-binfiles
key-execute key-catalogue-ctan
key-catalogue-contact-repository
key-catalogue-contact-home key-catalogue-license
key-catalogue-version key-catalogue-rest))
(define-peg-pattern space none " ")
(define-peg-pattern NL none "\n")
(define-peg-pattern rest-of-line body (and space
(* (and (not-followed-by NL) peg-any))
(or NL (not-followed-by peg-any))))
(define-peg-pattern body-line all rest-of-line)
(define-peg-pattern entry-value all (and rest-of-line (* body-line)))
(define-peg-pattern entry-item all (and key entry-value))
(define-peg-pattern entry all (* entry-item))
(define-peg-pattern tlpdb body (* (and entry (? NL))))
(define (parse- input)
(let* ((match (match-pattern tlpdb input))
(end (peg:end match))
(pt (peg:tree match)))
(if (eq? (string-length input) end)
pt
(if match
(begin
(format (current-error-port) "parse error: at offset: ~a\n" end)
(pretty-print pt (current-error-port))
#f)
(begin
(format (current-error-port) "parse error: no match\n")
#f)))))
(define (parse-string input)
(let* ((pt (parse- input)))
pt))
(define (parse port)
(parse-string (read-string port)))
(define parsed-db #f)
(define* (parse-db #:optional db-file)
(unless parsed-db
(set! parsed-db (call-with-input-file (or db-file (get-tlpdb)) parse)))
parsed-db)
(define* (pretty-print-db #:optional db-file)
;; TODO: Remove this function?
(pretty-print (parse-db (or db-file (get-tlpdb)))))
(define (texlive-bin-package)
"Return the 'texlive-bin' package. This is a lazy reference so that we
don't depend on (gnu packages tex)."
(module-ref (resolve-interface '(gnu packages tex)) 'texlive-bin))
(define (get-tlpdb)
(let ((texlive-base-path (with-store store
(derivation->output-path
(package-derivation store (texlive-bin-package))))))
(string-append texlive-base-path "/share/tlpkg/texlive.tlpdb")))
(define (texlive-fetch name)
(find
(lambda (entry)
(match entry
((and all
('entry ('entry-item ('key-name "name") ('entry-value entry-name)) . _)
(? (lambda _ (string=? entry-name name))))
#t)
(_ #f)))
(parse-db)))
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