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-rw-r--r--Makefile.am17
-rw-r--r--configure.ac4
-rw-r--r--doc/guix.texi12
-rw-r--r--gnu/build/vm.scm41
-rw-r--r--gnu/packages/linux.scm16
-rw-r--r--gnu/system.scm2
-rw-r--r--gnu/system/vm.scm44
-rw-r--r--guix/build/store-copy.scm35
-rw-r--r--guix/scripts/system.scm2
-rw-r--r--m4/guix.m419
-rw-r--r--srfi/srfi-37.scm.in233
11 files changed, 103 insertions, 322 deletions
diff --git a/Makefile.am b/Makefile.am
index 4dfcd06d0b..f6059d94bf 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -250,18 +250,6 @@ nobase_dist_guilemodule_DATA = \
nobase_nodist_guilemodule_DATA = guix/config.scm
nobase_nodist_guileobject_DATA = $(GOBJECTS)
-# Do we need to provide our own non-broken (srfi srfi-37) module?
-if INSTALL_SRFI_37
-
-nobase_nodist_guilemodule_DATA += srfi/srfi-37.scm
-GOBJECTS += srfi/srfi-37.go
-
-srfi/srfi-37.scm: srfi/srfi-37.scm.in
- $(MKDIR_P) srfi
- cp "$<" "$@"
-
-endif INSTALL_SRFI_37
-
# Handy way to remove the .go files without removing all the rest.
clean-go:
-$(RM) -f $(GOBJECTS)
@@ -441,7 +429,6 @@ EXTRA_DIST = \
build-aux/run-system-tests.scm \
d3.v3.js \
graph.js \
- srfi/srfi-37.scm.in \
srfi/srfi-64.scm \
srfi/srfi-64.upstream.scm \
tests/test.drv \
@@ -598,9 +585,6 @@ GUIXSD_IMAGE_BASE = guixsd-usb-install-$(PACKAGE_VERSION)
# Prefix of the GuixSD VM image file name.
GUIXSD_VM_IMAGE_BASE = guixsd-vm-image-$(PACKAGE_VERSION)
-# Size of the installation image (for x86_64 typically).
-GUIXSD_INSTALLATION_IMAGE_SIZE ?= 950MiB
-
# Size of the VM image (for x86_64 typically).
GUIXSD_VM_IMAGE_SIZE ?= 2GiB
@@ -648,7 +632,6 @@ release: dist
image=`$(top_builddir)/pre-inst-env \
guix system disk-image \
--system=$$system \
- --image-size=$(GUIXSD_INSTALLATION_IMAGE_SIZE) \
gnu/system/install.scm` ; \
if [ ! -f "$$image" ] ; then \
echo "failed to produced GuixSD installation image for $$system" >&2 ; \
diff --git a/configure.ac b/configure.ac
index c937e948d3..2b75c900cc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -111,10 +111,6 @@ AM_CONDITIONAL([HAVE_GUILE_GIT], [test "x$have_guile_git" = "xyes"])
dnl Make sure we have a full-fledged Guile.
GUIX_ASSERT_GUILE_FEATURES([regex posix socket net-db threads])
-dnl Check whether (srfi srfi-37) works, and provide our own if it doesn't.
-GUIX_CHECK_SRFI_37
-AM_CONDITIONAL([INSTALL_SRFI_37], [test "x$ac_cv_guix_srfi_37_broken" = xyes])
-
dnl Decompressors, for use by the substituter and other modules.
AC_PATH_PROG([GZIP], [gzip])
AC_PATH_PROG([BZIP2], [bzip2])
diff --git a/doc/guix.texi b/doc/guix.texi
index 729ec081be..d61a5b7514 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -7877,9 +7877,8 @@ that.
The installation image described above was built using the @command{guix
system} command, specifically:
-@c FIXME: 1G is too much; see <http://bugs.gnu.org/23077>.
@example
-guix system disk-image --image-size=1G gnu/system/install.scm
+guix system disk-image gnu/system/install.scm
@end example
Have a look at @file{gnu/system/install.scm} in the source tree,
@@ -16187,8 +16186,9 @@ size of the image.
@item vm-image
@itemx disk-image
Return a virtual machine or disk image of the operating system declared
-in @var{file} that stands alone. Use the @option{--image-size} option
-to specify the size of the image.
+in @var{file} that stands alone. By default, @command{guix system}
+estimates the size of the image needed to store the system, but you can
+use the @option{--image-size} option to specify a value.
When using @code{vm-image}, the returned image is in qcow2 format, which
the QEMU emulator can efficiently use. @xref{Running GuixSD in a VM},
@@ -16251,6 +16251,10 @@ of the given @var{size}. @var{size} may be a number of bytes, or it may
include a unit as a suffix (@pxref{Block size, size specifications,,
coreutils, GNU Coreutils}).
+When this option is omitted, @command{guix system} computes an estimate
+of the image size as a function of the size of the system declared in
+@var{file}.
+
@item --root=@var{file}
@itemx -r @var{file}
Make @var{file} a symlink to the result, and register it as a garbage
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index 57619764ce..8f7fc3c9c4 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
@@ -27,6 +27,7 @@
#:use-module (gnu build linux-boot)
#:use-module (gnu build install)
#:use-module (guix records)
+ #:use-module ((guix combinators) #:select (fold2))
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
@@ -46,6 +47,7 @@
partition-flags
partition-initializer
+ estimated-partition-size
root-partition-initializer
initialize-partition-table
initialize-hard-disk))
@@ -71,19 +73,23 @@
output
(qemu (qemu-command)) (memory-size 512)
linux initrd
- make-disk-image? (disk-image-size 100)
+ make-disk-image?
+ (disk-image-size (* 100 (expt 2 20)))
(disk-image-format "qcow2")
(references-graphs '()))
"Run BUILDER, a Scheme file, into a VM running LINUX with INITRD, and copy
the result to OUTPUT.
When MAKE-DISK-IMAGE? is true, OUTPUT will contain a VM image of
-DISK-IMAGE-SIZE MiB resulting from the execution of BUILDER, which may access
-it via /dev/hda.
+DISK-IMAGE-SIZE bytes resulting from the execution of BUILDER, which may
+access it via /dev/hda.
REFERENCES-GRAPHS can specify a list of reference-graph files as produced by
the #:references-graphs parameter of 'derivation'."
(when make-disk-image?
+ (format #t "creating ~a image of ~,2f MiB...~%"
+ disk-image-format (/ disk-image-size (expt 2 20)))
+ (force-output)
(unless (zero? (system* "qemu-img" "create" "-f" disk-image-format
output
(number->string disk-image-size)))
@@ -146,17 +152,11 @@ the #:references-graphs parameter of 'derivation'."
(flags partition-flags (default '()))
(initializer partition-initializer (default (const #t))))
-(define (fold2 proc seed1 seed2 lst) ;TODO: factorize
- "Like `fold', but with a single list and two seeds."
- (let loop ((result1 seed1)
- (result2 seed2)
- (lst lst))
- (if (null? lst)
- (values result1 result2)
- (call-with-values
- (lambda () (proc (car lst) result1 result2))
- (lambda (result1 result2)
- (loop result1 result2 (cdr lst)))))))
+(define (estimated-partition-size graphs)
+ "Return the estimated size of a partition that can store the store items
+given by GRAPHS, a list of file names produced by #:references-graphs."
+ ;; Simply add a 20% overhead.
+ (round (* 1.2 (closure-size graphs))))
(define* (initialize-partition-table device partitions
#:key
@@ -192,8 +192,15 @@ actual /dev name based on DEVICE."
(cons (partition-options head offset index)
result))))))
- (format #t "creating partition table with ~a partitions...\n"
- (length partitions))
+ (format #t "creating partition table with ~a partitions (~a)...\n"
+ (length partitions)
+ (string-join (map (compose (cut string-append <> " MiB")
+ number->string
+ (lambda (size)
+ (round (/ size (expt 2. 20))))
+ partition-size)
+ partitions)
+ ", "))
(unless (zero? (apply system* "parted" "--script"
device "mklabel" label-type
(options partitions offset)))
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 9031d727ef..28a060fe54 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -363,8 +363,8 @@ It has been modified to remove all non-free binary blobs.")
(define %intel-compatible-systems '("x86_64-linux" "i686-linux"))
-(define %linux-libre-version "4.11.7")
-(define %linux-libre-hash "0kliwdz4qqjz13pywhavxg19cy1mf6d1f52f6kgapc331309vad9")
+(define %linux-libre-version "4.11.8")
+(define %linux-libre-hash "1z35h6xr8gdzq31xv3dpdz6ddz4q3183fwvkmx8qd7h9bhy13aw6")
(define-public linux-libre
(make-linux-libre %linux-libre-version
@@ -373,20 +373,20 @@ It has been modified to remove all non-free binary blobs.")
#:configuration-file kernel-config))
(define-public linux-libre-4.9
- (make-linux-libre "4.9.34"
- "00jm3338kvhfj850lg3mvk680fmfw34mvwaq41lvxgb1z2xqqlz1"
+ (make-linux-libre "4.9.35"
+ "0fs90jgb01jybkclngg5asvbs1y70f2abs395qcb3lxpx7zxhy1h"
%intel-compatible-systems
#:configuration-file kernel-config))
(define-public linux-libre-4.4
- (make-linux-libre "4.4.74"
- "04x2ki3s2jsjkkk6bld0rd9rsk8qqvrfsxawxzfa26mkq6pv87r2"
+ (make-linux-libre "4.4.75"
+ "1h687flrdzlcd1ms5n2khm0mxybr8bj2jfnnm7qvy6ha2vsngb5b"
%intel-compatible-systems
#:configuration-file kernel-config))
(define-public linux-libre-4.1
- (make-linux-libre "4.1.41"
- "02mqfl899jxvrmxlh8lvcgvm3klwd8wbsdz4rr2gpchbggj4vgb2"
+ (make-linux-libre "4.1.42"
+ "1g5jhn7cm6ixn7w8ciqm6qgxv7k1jg50v6k05hsvzvrqfpaxqlbz"
%intel-compatible-systems
#:configuration-file kernel-config))
diff --git a/gnu/system.scm b/gnu/system.scm
index 31f9320023..39f8465bcb 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -490,7 +490,7 @@ explicitly appear in OS."
lsof ;for Guix's 'list-runtime-roots'
pciutils usbutils
util-linux inetutils isc-dhcp
- shadow ;for 'passwd'
+ (@ (gnu packages admin) shadow) ;for 'passwd'
;; wireless-tools is deprecated in favor of iw, but it's still what
;; many people are familiar with, so keep it around.
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index 392737d078..7ac8696158 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
@@ -108,8 +108,7 @@
(references-graphs #f)
(memory-size 256)
(disk-image-format "qcow2")
- (disk-image-size
- (* 100 (expt 2 20))))
+ (disk-image-size 'guess))
"Evaluate EXP in a QEMU virtual machine running LINUX with INITRD (a
derivation). In the virtual machine, EXP has access to all its inputs from the
store; it should put its output files in the `/xchg' directory, which is
@@ -118,7 +117,8 @@ runs with MEMORY-SIZE MiB of memory.
When MAKE-DISK-IMAGE? is true, then create a QEMU disk image of type
DISK-IMAGE-FORMAT (e.g., 'qcow2' or 'raw'), of DISK-IMAGE-SIZE bytes and
-return it.
+return it. When DISK-IMAGE-SIZE is 'guess, estimate the image size based
+based on the size of the closure of REFERENCES-GRAPHS.
When REFERENCES-GRAPHS is true, it must be a list of file name/store path
pairs, as for `derivation'. The files containing the reference graphs are
@@ -143,14 +143,18 @@ made available under the /xchg CIFS share."
(use-modules (guix build utils)
(gnu build vm))
- (let ((inputs '#$(list qemu coreutils))
- (linux (string-append #$linux "/"
- #$(system-linux-image-file-name)))
- (initrd (string-append #$initrd "/initrd"))
- (loader #$loader)
- (graphs '#$(match references-graphs
- (((graph-files . _) ...) graph-files)
- (_ #f))))
+ (let* ((inputs '#$(list qemu coreutils))
+ (linux (string-append #$linux "/"
+ #$(system-linux-image-file-name)))
+ (initrd (string-append #$initrd "/initrd"))
+ (loader #$loader)
+ (graphs '#$(match references-graphs
+ (((graph-files . _) ...) graph-files)
+ (_ #f)))
+ (size #$(if (eq? 'guess disk-image-size)
+ #~(+ (* 70 (expt 2 20)) ;ESP
+ (estimated-partition-size graphs))
+ disk-image-size)))
(set-path-environment-variable "PATH" '("bin") inputs)
@@ -160,7 +164,7 @@ made available under the /xchg CIFS share."
#:memory-size #$memory-size
#:make-disk-image? #$make-disk-image?
#:disk-image-format #$disk-image-format
- #:disk-image-size #$disk-image-size
+ #:disk-image-size size
#:references-graphs graphs)))))
(gexp->derivation name builder
@@ -174,7 +178,7 @@ made available under the /xchg CIFS share."
(name "qemu-image")
(system (%current-system))
(qemu qemu-minimal)
- (disk-image-size (* 100 (expt 2 20)))
+ (disk-image-size 'guess)
(disk-image-format "qcow2")
(file-system-type "ext4")
file-system-label
@@ -201,7 +205,8 @@ the image."
(guix build utils)))
#~(begin
(use-modules (gnu build vm)
- (guix build utils))
+ (guix build utils)
+ (srfi srfi-26))
(let ((inputs
'#$(append (list qemu parted e2fsprogs dosfstools)
@@ -227,9 +232,14 @@ the image."
#:copy-closures? #$copy-inputs?
#:register-closures? #$register-closures?
#:system-directory #$os-drv))
+ (root-size #$(if (eq? 'guess disk-image-size)
+ #~(estimated-partition-size
+ (map (cut string-append "/xchg/" <>)
+ graphs))
+ (- disk-image-size
+ (* 50 (expt 2 20)))))
(partitions (list (partition
- (size #$(- disk-image-size
- (* 50 (expt 2 20))))
+ (size root-size)
(label #$file-system-label)
(file-system #$file-system-type)
(flags '(boot))
diff --git a/guix/build/store-copy.scm b/guix/build/store-copy.scm
index a296bdf78f..fe2eb6f69a 100644
--- a/guix/build/store-copy.scm
+++ b/guix/build/store-copy.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013, 2014, 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -20,7 +20,9 @@
#:use-module (guix build utils)
#:use-module (srfi srfi-1)
#:use-module (ice-9 rdelim)
+ #:use-module (ice-9 ftw)
#:export (read-reference-graph
+ closure-size
populate-store))
;;; Commentary:
@@ -46,6 +48,37 @@ The data at PORT is the format produced by #:references-graphs."
(loop (read-line port)
result)))))
+(define (file-size file)
+ "Return the size of bytes of FILE, entering it if FILE is a directory."
+ (file-system-fold (const #t)
+ (lambda (file stat result) ;leaf
+ (+ (stat:size stat) result))
+ (lambda (directory stat result) ;down
+ (+ (stat:size stat) result))
+ (lambda (directory stat result) ;up
+ result)
+ (lambda (file stat result) ;skip
+ result)
+ (lambda (file stat errno result)
+ (format (current-error-port)
+ "file-size: ~a: ~a~%" file
+ (strerror errno))
+ result)
+ 0
+ file
+ lstat))
+
+(define (closure-size reference-graphs)
+ "Return an estimate of the size of the closure described by
+REFERENCE-GRAPHS, a list of reference-graph files."
+ (define (graph-from-file file)
+ (call-with-input-file file read-reference-graph))
+
+ (define items
+ (delete-duplicates (append-map graph-from-file reference-graphs)))
+
+ (reduce + 0 (map file-size items)))
+
(define* (populate-store reference-graphs target)
"Populate the store under directory TARGET with the items specified in
REFERENCE-GRAPHS, a list of reference-graph files."
diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm
index 35675cc018..7e20b10dad 100644
--- a/guix/scripts/system.scm
+++ b/guix/scripts/system.scm
@@ -854,7 +854,7 @@ Some ACTIONS support additional ARGS.\n"))
(build-hook? . #t)
(max-silent-time . 3600)
(verbosity . 0)
- (image-size . ,(* 900 (expt 2 20)))
+ (image-size . guess)
(install-bootloader? . #t)))
diff --git a/m4/guix.m4 b/m4/guix.m4
index e546b8f4dd..add57f5262 100644
--- a/m4/guix.m4
+++ b/m4/guix.m4
@@ -136,25 +136,6 @@ AC_DEFUN([GUIX_ASSERT_GUILE_FEATURES], [
done
])
-dnl GUIX_CHECK_SRFI_37
-dnl
-dnl Check whether SRFI-37 suffers from <http://bugs.gnu.org/13176>.
-dnl This bug was fixed in Guile 2.0.9.
-AC_DEFUN([GUIX_CHECK_SRFI_37], [
- AC_CACHE_CHECK([whether (srfi srfi-37) is affected by http://bugs.gnu.org/13176],
- [ac_cv_guix_srfi_37_broken],
- [if "$GUILE" -c "(use-modules (srfi srfi-37)) \
- (sigaction SIGALRM (lambda _ (primitive-exit 1))) \
- (alarm 1) \
- (define opts (list (option '(#\I) #f #t (lambda _ #t)))) \
- (args-fold '(\"-I\") opts (lambda _ (error)) (lambda _ #f) '())"
- then
- ac_cv_guix_srfi_37_broken=no
- else
- ac_cv_guix_srfi_37_broken=yes
- fi])
-])
-
dnl GUIX_CHECK_UNBUFFERED_CBIP
dnl
dnl Check whether 'setbvuf' works on custom binary input ports (CBIPs), as is
diff --git a/srfi/srfi-37.scm.in b/srfi/srfi-37.scm.in
deleted file mode 100644
index 3f654af2ce..0000000000
--- a/srfi/srfi-37.scm.in
+++ /dev/null
@@ -1,233 +0,0 @@
-;;; srfi-37.scm --- args-fold
-
-;; Copyright (C) 2007, 2008, 2013 Free Software Foundation, Inc.
-;;
-;; This library is free software; you can redistribute it and/or
-;; modify it under the terms of the GNU Lesser General Public
-;; License as published by the Free Software Foundation; either
-;; version 3 of the License, or (at your option) any later version.
-;;
-;; This library 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
-;; Lesser General Public License for more details.
-;;
-;; You should have received a copy of the GNU Lesser General Public
-;; License along with this library; if not, write to the Free Software
-;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-;;; Commentary:
-;;
-;; To use this module with Guile, use (cdr (program-arguments)) as
-;; the ARGS argument to `args-fold'. Here is a short example:
-;;
-;; (args-fold (cdr (program-arguments))
-;; (let ((display-and-exit-proc
-;; (lambda (msg)
-;; (lambda (opt name arg)
-;; (display msg) (quit) (values)))))
-;; (list (option '(#\v "version") #f #f
-;; (display-and-exit-proc "Foo version 42.0\n"))
-;; (option '(#\h "help") #f #f
-;; (display-and-exit-proc
-;; "Usage: foo scheme-file ..."))))
-;; (lambda (opt name arg)
-;; (error "Unrecognized option `~A'" name))
-;; (lambda (op) (load op) (values)))
-;;
-;;; Code:
-
-
-;;;; Module definition & exports
-(define-module (srfi srfi-37)
- #:use-module (srfi srfi-9)
- #:export (option option-names option-required-arg?
- option-optional-arg? option-processor
- args-fold))
-
-(cond-expand-provide (current-module) '(srfi-37))
-
-;;;; args-fold and periphery procedures
-
-;;; An option as answered by `option'. `names' is a list of
-;;; characters and strings, representing associated short-options and
-;;; long-options respectively that should use this option's
-;;; `processor' in an `args-fold' call.
-;;;
-;;; `required-arg?' and `optional-arg?' are mutually exclusive
-;;; booleans and indicate whether an argument must be or may be
-;;; provided. Besides the obvious, this affects semantics of
-;;; short-options, as short-options with a required or optional
-;;; argument cannot be followed by other short options in the same
-;;; program-arguments string, as they will be interpreted collectively
-;;; as the option's argument.
-;;;
-;;; `processor' is called when this option is encountered. It should
-;;; accept the containing option, the element of `names' (by `equal?')
-;;; encountered, the option's argument (or #f if none), and the seeds
-;;; as variadic arguments, answering the new seeds as values.
-(define-record-type srfi-37:option
- (option names required-arg? optional-arg? processor)
- option?
- (names option-names)
- (required-arg? option-required-arg?)
- (optional-arg? option-optional-arg?)
- (processor option-processor))
-
-(define (error-duplicate-option option-name)
- (scm-error 'program-error "args-fold"
- "Duplicate option name `~A~A'"
- (list (if (char? option-name) #\- "--")
- option-name)
- #f))
-
-(define (build-options-lookup options)
- "Answer an `equal?' Guile hash-table that maps OPTIONS' names back
-to the containing options, signalling an error if a name is
-encountered more than once."
- (let ((lookup (make-hash-table (* 2 (length options)))))
- (for-each
- (lambda (opt)
- (for-each (lambda (name)
- (let ((assoc (hash-create-handle!
- lookup name #f)))
- (if (cdr assoc)
- (error-duplicate-option (car assoc))
- (set-cdr! assoc opt))))
- (option-names opt)))
- options)
- lookup))
-
-(define (args-fold args options unrecognized-option-proc
- operand-proc . seeds)
- "Answer the results of folding SEEDS as multiple values against the
-program-arguments in ARGS, as decided by the OPTIONS'
-`option-processor's, UNRECOGNIZED-OPTION-PROC, and OPERAND-PROC."
- (let ((lookup (build-options-lookup options)))
- ;; I don't like Guile's `error' here
- (define (error msg . args)
- (scm-error 'misc-error "args-fold" msg args #f))
-
- (define (mutate-seeds! procedure . params)
- (set! seeds (call-with-values
- (lambda ()
- (apply procedure (append params seeds)))
- list)))
-
- ;; Clean up the rest of ARGS, assuming they're all operands.
- (define (rest-operands)
- (for-each (lambda (arg) (mutate-seeds! operand-proc arg))
- args)
- (set! args '()))
-
- ;; Call OPT's processor with OPT, NAME, an argument to be decided,
- ;; and the seeds. Depending on OPT's *-arg? specification, get
- ;; the parameter by calling REQ-ARG-PROC or OPT-ARG-PROC thunks;
- ;; if no argument is allowed, call NO-ARG-PROC thunk.
- (define (invoke-option-processor
- opt name req-arg-proc opt-arg-proc no-arg-proc)
- (mutate-seeds!
- (option-processor opt) opt name
- (cond ((option-required-arg? opt) (req-arg-proc))
- ((option-optional-arg? opt) (opt-arg-proc))
- (else (no-arg-proc) #f))))
-
- ;; Compute and answer a short option argument, advancing ARGS as
- ;; necessary, for the short option whose character is at POSITION
- ;; in the current ARG.
- (define (short-option-argument position)
- (cond ((< (1+ position) (string-length (car args)))
- (let ((result (substring (car args) (1+ position))))
- (set! args (cdr args))
- result))
- ((pair? (cdr args))
- (let ((result (cadr args)))
- (set! args (cddr args))
- result))
- ((pair? args)
- (set! args (cdr args))
- #f)
- (else #f)))
-
- ;; Interpret the short-option at index POSITION in (car ARGS),
- ;; followed by the remaining short options in (car ARGS).
- (define (short-option position)
- (if (>= position (string-length (car args)))
- (begin
- (set! args (cdr args))
- (next-arg))
- (let* ((opt-name (string-ref (car args) position))
- (option-here (hash-ref lookup opt-name)))
- (cond ((not option-here)
- (mutate-seeds! unrecognized-option-proc
- (option (list opt-name) #f #f
- unrecognized-option-proc)
- opt-name #f)
- (short-option (1+ position)))
- (else
- (invoke-option-processor
- option-here opt-name
- (lambda ()
- (or (short-option-argument position)
- (error "Missing required argument after `-~A'" opt-name)))
- (lambda ()
- ;; edge case: -xo -zf or -xo -- where opt-name=#\o
- ;; GNU getopt_long resolves these like I do
- (short-option-argument position))
- (lambda () #f))
- (if (not (or (option-required-arg? option-here)
- (option-optional-arg? option-here)))
- (short-option (1+ position))))))))
-
- ;; Process the long option in (car ARGS). We make the
- ;; interesting, possibly non-standard assumption that long option
- ;; names might contain #\=, so keep looking for more #\= in (car
- ;; ARGS) until we find a named option in lookup.
- (define (long-option)
- (let ((arg (car args)))
- (let place-=-after ((start-pos 2))
- (let* ((index (string-index arg #\= start-pos))
- (opt-name (substring arg 2 (or index (string-length arg))))
- (option-here (hash-ref lookup opt-name)))
- (if (not option-here)
- ;; look for a later #\=, unless there can't be one
- (if index
- (place-=-after (1+ index))
- (mutate-seeds!
- unrecognized-option-proc
- (option (list opt-name) #f #f unrecognized-option-proc)
- opt-name #f))
- (invoke-option-processor
- option-here opt-name
- (lambda ()
- (if index
- (substring arg (1+ index))
- (error "Missing required argument after `--~A'" opt-name)))
- (lambda () (and index (substring arg (1+ index))))
- (lambda ()
- (if index
- (error "Extraneous argument after `--~A'" opt-name))))))))
- (set! args (cdr args)))
-
- ;; Process the remaining in ARGS. Basically like calling
- ;; `args-fold', but without having to regenerate `lookup' and the
- ;; funcs above.
- (define (next-arg)
- (if (null? args)
- (apply values seeds)
- (let ((arg (car args)))
- (cond ((or (not (char=? #\- (string-ref arg 0)))
- (= 1 (string-length arg))) ;"-"
- (mutate-seeds! operand-proc arg)
- (set! args (cdr args)))
- ((char=? #\- (string-ref arg 1))
- (if (= 2 (string-length arg)) ;"--"
- (begin (set! args (cdr args)) (rest-operands))
- (long-option)))
- (else (short-option 1)))
- (next-arg))))
-
- (next-arg)))
-
-;;; srfi-37.scm ends here
generated by cgit v1.2.3 (git 2.45.0) at 2024-12-18 04:15:53 +0000