On Sun, Nov 04, 2007 at 01:22:01PM -0500, Justin Pryzby wrote:
> . the abundant commandline parameters can be handled together with > "eval". Some of them should be separate (eg. when the argument is > a file and its existence can be checked). If it's agreed that this > is a change in the right direction I can provide further patches > which can be expected to considerably reduce rather than increase > the code size. Attached is a patch against current GIT effecting substation reduction in the size of argument parsing code.
--- /tmp/lh_config 2007-11-05 00:28:57.000000000 -0500
+++ /usr/bin/lh_config 2007-11-05 00:42:23.000000000 -0500
@@ -19,7 +19,6 @@
# Setting static variables
DESCRIPTION="create configuration for live-helper(7)"
-HELP="FIXME"
USAGE="${PROGRAM} [--apt apt|aptitude]\n\
\t [--apt-ftp-proxy URL]\n\
\t [--apt-http-proxy URL]\n\
@@ -105,6 +104,23 @@
\t [--username NAME]\n\
\t [--verbose]"
+# Set LH_$1=$2.
+doarg2 ()
+{
+ a=`echo "${1#--}" |
+ tr '[[:lower:]]' '[[:upper:]]' |
+ tr '-' '_'`
+ eval "LH_$a=$2"
+}
+
+# Set LH_$1=$2 and conditionally warn about nonexistence of $2.
+doargf ()
+{
+ doarg2 "$@"
+ [ -f "$2" ] && return
+ echo "$0: warning: $2 doesn't exist" >&2
+}
+
Local_arguments ()
{
ARGUMENTS="$(getopt --longoptions
apt:,apt-ftp-proxy:,apt-http-proxy:,apt-pdiffs:,apt-pipeline:,apt-recommends:,apt-secure:,bootstrap:,cache:,cache-indices:,cache-packages:,cache-stages:,debconf-frontend:,debconf-nowarnings:,debconf-priority:,genisoimage:,initramfs:,losetup:,mode:,root-command:,tasksel:,includes:,templates:,architecture:,bootstrap-config:,bootstrap-flavour:,bootstrap-keyring:,distribution:,mirror-bootstrap:,mirror-bootstrap-security:,mirror-binary:,mirror-binary-security:,sections:,chroot-filesystem:,union-filesystem:,exposed-root:,hooks:,interactive:,keyring-packages:,language:,linux-flavours:,linux-packages:,packages:,packages-lists:,tasks:,security:,symlinks:,sysvinit:,binary-images:,binary-indices:,bootappend-install:,bootappend-live:,bootloader:,chroot-build:,debian-installer:,debian-installer-daily:,encryption:,grub-splash:,hostname:,iso-application:,iso-preparer:,iso-publisher:,iso-volume:,memtest:,net-root-filesystem:,net-root-mountoptions:,net-root-path:,net-root-server:,net-cow-filesystem:,net-cow-mountoptions:,net-cow-path:,net-cow-server:,syslinux-splash:,syslinux-timeout:,syslinux-menu:,username:,source:,source-images:,breakpoints,conffile:,debug,force,help,quiet,usage,verbose,version
--name=${PROGRAM} --options a:f:d:m:l:k:p:b:e:s:c:huv --shell sh -- "[EMAIL
PROTECTED]")"
@@ -119,475 +135,205 @@
while true
do
+ arg=$1
case "${1}" in
# config/common
- --apt)
- LH_APT="${2}"
- shift 2
- ;;
-
- --apt-ftp-proxy)
- LH_APT_FTP_PROXY="${2}"
- shift 2
- ;;
-
- --apt-http-proxy)
- LH_APT_HTTP_PROXY="${2}"
- shift 2
- ;;
-
- --apt-pdiffs)
- LH_APT_PDIFFS="${2}"
- shift 2
- ;;
-
- --apt-pipeline)
- LH_APT_PIPELINE="${2}"
- shift 2
- ;;
-
- --apt-recommends)
- LH_APT_RECOMMENDS="${2}"
- shift 2
- ;;
-
- --apt-secure)
- LH_APT_SECURE="${2}"
- shift 2
- ;;
-
- --bootstrap)
- LH_BOOTSTRAP="${2}"
- shift 2
- ;;
-
- --cache)
- LH_CACHE="${2}"
- shift 2
- ;;
-
- --cache-indices)
- LH_CACHE_INDICES="${2}"
- shift 2
- ;;
-
- --cache-packages)
- LH_CACHE_PACKAGES="${2}"
- shift 2
- ;;
-
- --cache-stages)
- LH_CACHE_STAGES="${2}"
- shift 2
- ;;
-
- --debconf-frontend)
- LH_DEBCONF_FRONTEND="${2}"
- shift 2
- ;;
-
- --debconf-nowarnings)
- LH_DEBCONF_NOWARNINGS="${2}"
- shift 2
- ;;
-
- --debconf-priority)
- LH_DEBCONF_PRIORITY="${2}"
- shift 2
- ;;
-
- --initramfs)
- LH_INITRAMFS="${2}"
- shift 2
- ;;
-
- --losetup)
- LH_LOSETUP="${2}"
- shift 2
- ;;
-
- --mode)
- LH_MODE="${2}"
- shift 2
- ;;
-
- --root-command)
- LH_ROOT_COMMAND="${2}"
- shift 2
- ;;
-
- --tasksel)
- LH_TASKSEL="${2}"
- shift 2
+ --apt|--apt-ftp-proxy|--apt-http-proxy)
+ doarg2 "$1" "$2"
+ shift
;;
- --includes)
- LH_INCLUDES="${2}"
- shift 2
+ --apt-pdiffs|--apt-pipeline|--apt-recommends)
+ doarg2 "$@"
+ shift
;;
- --templates)
- LH_TEMPLATES="${2}"
- shift 2
+ --apt-secure|--bootstrap)
+ doarg2 "$@"
+ shift
;;
- --breakpoints)
- LH_BREAKPOINTS="enabled"
+ --cache|--cache-indices|--cache-packages|--cache-stages)
+ doarg2 "$@"
shift
;;
- --debug)
- LH_DEBUG="enabled"
+
--debconf-frontend|--debconf-nowarnings|--debconf-priority)
+ doarg2 "$@"
shift
;;
- --force)
- LH_FORCE="enabled"
+ --initramfs|--losetup|--mode|--root-command|--tasksel)
+ doarg2 "$@"
shift
;;
- --quiet)
- LH_QUIET="enabled"
+ --includes|--templates)
+ doarg2 "$@"
shift
;;
- --verbose)
- LH_VERBOSE="enabled"
- shift
+ --breakpoints|--debug|--force|--quiet|--verbose)
+ doarg2 "$1" enabled
;;
-v|--version)
Version
- shift
;;
# config/bootstrap
-a|--architecture)
LH_ARCHITECTURE="${2}"
- shift 2
+ shift
;;
--bootstrap-config)
- LH_BOOTSTRAP_CONFIG="${2}"
- shift 2
+ doargf "$@"
+ shift
;;
- -f|--bootstrap-flavour)
- LH_BOOTSTRAP_FLAVOUR="${2}"
- shift 2
+ --bootstrap-keyring|--sections)
+ doarg2 "$@"
+ shift
;;
- --bootstrap-keyring)
- LH_BOOTSTRAP_KEYRING="${2}"
- shift 2
+ -f|--bootstrap-flavour)
+ LH_BOOTSTRAP_FLAVOUR="${2}"
+ shift
;;
-d|--distribution)
LH_DISTRIBUTION="${2}"
- shift 2
+ shift
;;
-m|--mirror-bootstrap)
LH_MIRROR_BOOTSTRAP="${2}"
- shift 2
- ;;
-
- --mirror-bootstrap-security)
- LH_MIRROR_BOOTSTRAP_SECURITY="${2}"
- shift 2
- ;;
-
- --mirror-binary)
- LH_MIRROR_BINARY="${2}"
- shift 2
- ;;
-
- --mirror-binary-security)
- LH_MIRROR_BINARY_SECURITY="${2}"
- shift 2
+ shift
;;
- --sections)
- LH_SECTIONS="${2}"
- shift 2
+
--mirror-bootstrap-security|--mirror-binary|--mirror-binary-security)
+ doarg2 "$@"
+ shift
;;
# config/chroot
- --chroot-filesystem)
- LH_CHROOT_FILESYSTEM="${2}"
- shift 2
- ;;
-
- --union-filesystem)
- LH_UNION_FILESYSTEM="${2}"
- shift 2
- ;;
-
- --exposed-root)
- LH_EXPOSED_ROOT="${2}"
- shift 2
- ;;
-
- --hooks)
- LH_HOOKS="${2}"
- shift 2
- ;;
-
- --interactive)
- LH_INTERACTIVE="${2}"
- shift 2
+ --chroot-filesystem|--union-filesystem|--exposed-root)
+ doarg2 "$@"
+ shift
;;
- --keyring-packages)
- LH_KEYRING_PACKAGES="${2}"
- shift 2
+ --interactive|--keyring-packages)
+ doarg2 "$@"
+ shift
;;
-l|--language)
LH_LANGUAGE="${2}"
- shift 2
+ shift
;;
-k|--linux-flavours)
LH_LINUX_FLAVOURS="${2}"
- shift 2
- ;;
-
- --linux-packages)
- LH_LINUX_PACKAGES="${2}"
- shift 2
+ shift
;;
- --packages)
- LH_PACKAGES="${2}"
- shift 2
+
--linux-packages|--packages|--tasks|--security|--symlinks|--sysvinit)
+ doarg2 "$@"
+ shift
;;
-p|--packages-lists)
LH_PACKAGES_LISTS="${2}"
- shift 2
- ;;
-
- --tasks)
- LH_TASKS="${2}"
- shift 2
- ;;
-
- --security)
- LH_SECURITY="${2}"
- shift 2
- ;;
-
- --symlinks)
- LH_SYMLINKS="${2}"
- shift 2
- ;;
-
- --sysvinit)
- LH_SYSVINIT="${2}"
- shift 2
+ shift
;;
# config/binary
-b|--binary-images)
LH_BINARY_IMAGES="${2}"
- shift 2
- ;;
-
- --binary-indices)
- LH_BINARY_INDICES="${2}"
- shift 2
- ;;
-
- --bootappend-live)
- LH_BOOTAPPEND_LIVE="${2}"
- shift 2
- ;;
-
- --bootappend-install)
- LH_BOOTAPPEND_INSTALL="${2}"
- shift 2
- ;;
-
- --bootloader)
- LH_BOOTLOADER="${2}"
- shift 2
- ;;
-
- --chroot-build)
- LH_CHROOT_BUILD="${2}"
- shift 2
+ shift
;;
- --debian-installer)
- LH_DEBIAN_INSTALLER="${2}"
- shift 2
+ --binary-indices|--bootappend-live|--bootappend-install)
+ doarg2 "$@"
+ shift
;;
- --debian-installer-daily)
- LH_DEBIAN_INSTALLER_DAILY="${2}"
- shift 2
+
--bootloader|--chroot-build|--debian-installer|--debian-installer-daily)
+ doarg2 "$@"
+ shift
;;
-e|--encryption)
LH_ENCRYPTION="${2}"
- shift 2
- ;;
-
- --grub-splash)
- LH_GRUB_SPLASH="${2}"
- shift 2
- ;;
-
- --hostname)
- LH_HOSTNAME="${2}"
- shift 2
- ;;
-
- --iso-application)
- LH_ISO_APPLICATION="${2}"
- shift 2
- ;;
-
- --iso-preparer)
- LH_ISO_PREPARER="${2}"
- shift 2
- ;;
-
- --iso-publisher)
- LH_ISO_PUBLISHER="${2}"
- shift 2
- ;;
-
- --iso-volume)
- LH_ISO_VOLUME="${2}"
- shift 2
- ;;
-
- --memtest)
- LH_MEMTEST="${2}"
- shift 2
- ;;
-
- --net-root-filesystem)
- LH_NET_ROOT_FILESYSTEM="${2}"
- shift 2
- ;;
-
- --net-root-mountoptions)
- LH_NET_ROOT_MOUNTOPTIONS="${2}"
- shift 2
+ shift
;;
- --net-root-path)
- LH_NET_ROOT_PATH="${2}"
- shift 2
+ --grub-splash|--hooks)
+ doargf "$@"
+ shift
;;
- --net-root-server)
- LH_NET_ROOT_SERVER="${2}"
- shift 2
+ --hostname|--memtest|--username)
+ doarg2 "$@"
+ shift
;;
- --net-cow-filesystem)
- LH_NET_COW_FILESYSTEM="${2}"
- shift 2
+
--iso-application|--iso-preparer|--iso-publisher|--iso-volume)
+ doarg2 "$@"
+ shift
;;
-
- --net-cow-mountoptions)
- LH_NET_COW_MOUNTOPTIONS="${2}"
- shift 2
+
+ --net-root-filesystem|--net-root-mountoptions)
+ doarg2 "$@"
+ shift
;;
- --net-cow-path)
- LH_NET_COW_PATH="${2}"
- shift 2
+ --net-root-path|--net-root-server|--net-cow-filesystem)
+ doarg2 "$@"
+ shift
;;
- --net-cow-server)
- LH_NET_COW_SERVER="${2}"
- shift 2
+ --net-cow-mountoptions|--net-cow-path|--net-cow-server)
+ doarg2 "$@"
+ shift
;;
--syslinux-splash)
- LH_SYSLINUX_SPLASH="${2}"
- shift 2
- ;;
-
- --syslinux-timeout)
- LH_SYSLINUX_TIMEOUT="${2}"
- shift 2
- ;;
-
- --syslinux-menu)
- LH_SYSLINUX_MENU="${2}"
- shift 2
+ doargf "$@"
+ shift
;;
- --username)
- LH_USERNAME="${2}"
- shift 2
+ --syslinux-timeout|--syslinux-menu)
+ doarg2 "$@"
+ shift
;;
# config/source
--source)
LH_SOURCE="${2}"
- shift 2
+ shift
;;
-s|--source-images)
LH_SOURCE_IMAGES="${2}"
- shift 2
- ;;
-
- # other
- --breakpoints)
- LH_BREAKPOINTS="enabled"
shift
;;
-c|--conffile)
LH_CONFFILE="${2}"
- shift 2
- ;;
-
- --debug)
- LH_DEBUG="enabled"
- shift
- ;;
-
- --force)
- LH_FORCE="enabled"
shift
;;
-h|--help)
Help
- shift
- ;;
-
- --quiet)
- LH_QUIET="enabled"
- shift
;;
-u|--usage)
Usage
- shift
- ;;
-
- --verbose)
- LH_VERBOSE="enabled"
- shift
- ;;
-
- -v|--version)
- Version
- shift
;;
--)
- shift
break
;;
@@ -596,6 +342,11 @@
exit 1
;;
esac
+
+ shift || {
+ echo "$0: error: option requires an argument: $arg"
+ exit 2
+ } >&2
done
}
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