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;;; Guile-Git --- GNU Guile bindings of libgit2
;;; Copyright © 2016 Amirouche Boubekki <amirouche@hypermove.net>
;;; Copyright © 2016, 2017 Erik Edrosa <erik.edrosa@gmail.com>
;;; Copyright © 2018 Jelle Licht <jlicht@fsfe.org>
;;; Copyright © 2019 Marius Bakke <marius@devup.no>
;;; Copyright © 2022 Maxime Devos <maximedevos@telenet.be>
;;;
;;; This file is part of Guile-Git.
;;;
;;; Guile-Git 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.
;;;
;;; Guile-Git 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 Guile-Git. If not, see <http://www.gnu.org/licenses/>.
(define-module (git types)
#:use-module (rnrs bytevectors)
#:use-module (system foreign)
#:export (annotated-commit? pointer->annotated-commit annotated-commit->pointer
blame? pointer->blame blame->pointer
blame-options? pointer->blame-options blame-options->pointer
blob? pointer->blob blob->pointer
branch-iterator? pointer->branch-iterator branch-iterator->pointer
checkout-options? pointer->checkout-options branch-iterator->pointer
commit? pointer->commit commit->pointer
config? pointer->config config->pointer
cred? pointer->cred cred->pointer
describe-result? pointer->describe-result describe-result->pointer
diff? pointer->diff diff->pointer
index? pointer->index index->pointer
object? pointer->object object->pointer
patch? pointer->patch patch->pointer
refdb? pointer->refdb refdb->pointer
reference? pointer->reference reference->pointer
reference-iterator? pointer->reference-iterator reference-iterator->pointer
repository? pointer->repository repository->pointer
remote? pointer->remote remote->pointer
status-list? pointer->status-list status-list->pointer
tag? pointer->tag tag->pointer
tree? pointer->tree tree->pointer
tree-entry? pointer->tree-entry tree-entry->pointer
submodule? pointer->submodule submodule->pointer
pointer->int
pointer->size_t
make-int-pointer
make-size_t-pointer
make-double-pointer))
(define-syntax define-libgit2-type
(lambda (s)
"Define a wrapped pointer type for an opaque type of libgit2."
(syntax-case s ()
((_ name)
(let ((symbol (syntax->datum #'name))
(identifier (lambda (symbol)
(datum->syntax #'name symbol))))
(with-syntax ((rtd (identifier (symbol-append '< symbol '>)))
(pred (identifier (symbol-append symbol '?)))
(wrap (identifier (symbol-append 'pointer-> symbol)))
(unwrap (identifier (symbol-append symbol '->pointer))))
#`(define-wrapped-pointer-type rtd
pred
wrap unwrap
(lambda (obj port)
(format port "#<git-~a ~a>"
#,(symbol->string symbol)
(number->string (pointer-address (unwrap obj))
16))))))))))
(define-libgit2-type annotated-commit)
(define-libgit2-type blame)
(define-libgit2-type blame-options)
(define-libgit2-type blob)
(define-libgit2-type branch-iterator)
(define-libgit2-type checkout-options)
(define-libgit2-type commit)
(define-libgit2-type config)
(define-libgit2-type cred)
(define-libgit2-type describe-result)
(define-libgit2-type diff)
(define-libgit2-type index)
(define-libgit2-type object)
(define-libgit2-type patch)
(define-libgit2-type refdb)
(define-libgit2-type reference)
(define-libgit2-type reference-iterator)
(define-libgit2-type repository)
(define-libgit2-type remote)
(define-libgit2-type status-list)
(define-libgit2-type tag)
(define-libgit2-type tree)
(define-libgit2-type tree-entry)
(define-libgit2-type submodule)
;;; helpers
(define (make-double-pointer)
(bytevector->pointer (make-bytevector (sizeof '*))))
(define (make-int-pointer)
(bytevector->pointer (make-bytevector (sizeof int))))
(define (make-size_t-pointer)
(bytevector->pointer (make-bytevector (sizeof size_t))))
(define (pointer->int ptr)
(bytevector-sint-ref (pointer->bytevector ptr (sizeof int))
0
(native-endianness)
(sizeof int)))
(define (pointer->size_t ptr)
(bytevector-uint-ref (pointer->bytevector ptr (sizeof size_t))
0
(native-endianness)
(sizeof size_t)))
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