refactor(3p/mime4cl): use SB-POSIX for FILE-LENGTH

This is slightly better than the (mostly untested) mess we had before:
Just implement the one thing we need using the tools the one
implementation we support (SBCL) gives us.

Eventually, we'll want to make this portable, probably using osicat.
Unfortunately, packaging this requires support for cffi-grovel (b/383)
which buildLisp lacks at the moment.

Change-Id: I6960015f80e6a5dfde67baf55537c5274a19e4e2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11356
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>
This commit is contained in:
sterni 2024-04-03 15:55:22 +02:00 committed by clbot
parent d13b0791c5
commit 5262e5bf6c
2 changed files with 5 additions and 43 deletions

View file

@ -10,6 +10,7 @@ depot.nix.buildLisp.library {
depot.third_party.lisp.npg
depot.third_party.lisp.trivial-gray-streams
depot.third_party.lisp.qbase64
{ sbcl = depot.nix.buildLisp.bundled "sb-posix"; }
];
srcs = [

View file

@ -32,6 +32,8 @@
(defpackage :mime4cl-ex-sclf
(:use :common-lisp)
(:import-from :sb-posix :stat :stat-size)
(:export
#:aif
#:awhen
@ -62,8 +64,6 @@
#:save-file-excursion
#:read-file
#:unix-file-stat
#:unix-stat
#:file-size
#:promise
@ -275,51 +275,12 @@ ELEMENT-TYPE."
#-sbcl (let (#+cmu (lisp::*ignore-wildcards* t))
(namestring pathname)))
(defstruct (unix-file-stat (:conc-name stat-))
device
inode
links
atime
mtime
ctime
size
blksize
blocks
uid
gid
mode)
(defun unix-stat (pathname)
;; this could be different depending on the unix systems
(multiple-value-bind (ok? device inode mode links uid gid rdev
size atime mtime ctime
blksize blocks)
(#+cmu unix:unix-lstat
#+sbcl sb-unix:unix-lstat
;; TODO(sterni): ECL, CCL
(if (stringp pathname)
pathname
(native-namestring pathname)))
(declare (ignore rdev))
(when ok?
(make-unix-file-stat :device device
:inode inode
:links links
:atime atime
:mtime mtime
:ctime ctime
:size size
:blksize blksize
:blocks blocks
:uid uid
:gid gid
:mode mode))))
;; FILE-LENGTH is a bit idiosyncratic in this respect. Besides, Unix
;; allows to get to know the file size without being able to open a
;; file; just ask politely.
(defun file-size (pathname)
(stat-size (unix-stat pathname)))
#+sbcl (stat-size (unix-stat pathname))
#-sbcl (error "nyi"))
;; LAZY