git/git-clean.sh
David Kastrup 822f7c7349 Supplant the "while case ... break ;; esac" idiom
A lot of shell scripts contained stuff starting with

	while case "$#" in 0) break ;; esac

and similar.  I consider breaking out of the condition instead of the
body od the loop ugly, and the implied "true" value of the
non-matching case is not really obvious to humans at first glance.  It
happens not to be obvious to some BSD shells, either, but that's
because they are not POSIX-compliant.  In most cases, this has been
replaced by a straight condition using "test".  "case" has the
advantage of being faster than "test" on vintage shells where "test"
is not a builtin.  Since none of them is likely to run the git
scripts, anyway, the added readability should be worth the change.

A few loops have had their termination condition expressed
differently.

Signed-off-by: David Kastrup <dak@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-23 16:12:00 -07:00

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#!/bin/sh
#
# Copyright (c) 2005-2006 Pavel Roskin
#
USAGE="[-d] [-f] [-n] [-q] [-x | -X] [--] <paths>..."
LONG_USAGE='Clean untracked files from the working directory
-d remove directories as well
-f override clean.requireForce and clean anyway
-n don'\''t remove anything, just show what would be done
-q be quiet, only report errors
-x remove ignored files as well
-X remove only ignored files
When optional <paths>... arguments are given, the paths
affected are further limited to those that match them.'
SUBDIRECTORY_OK=Yes
. git-sh-setup
require_work_tree
ignored=
ignoredonly=
cleandir=
disabled="`git config --bool clean.requireForce`"
rmf="rm -f --"
rmrf="rm -rf --"
rm_refuse="echo Not removing"
echo1="echo"
while test $# != 0
do
case "$1" in
-d)
cleandir=1
;;
-f)
disabled=
;;
-n)
disabled=
rmf="echo Would remove"
rmrf="echo Would remove"
rm_refuse="echo Would not remove"
echo1=":"
;;
-q)
echo1=":"
;;
-x)
ignored=1
;;
-X)
ignoredonly=1
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
esac
shift
done
if [ "$disabled" = true ]; then
echo "clean.requireForce set and -n or -f not given; refusing to clean"
exit 1
fi
case "$ignored,$ignoredonly" in
1,1) usage;;
esac
if [ -z "$ignored" ]; then
excl="--exclude-per-directory=.gitignore"
if [ -f "$GIT_DIR/info/exclude" ]; then
excl_info="--exclude-from=$GIT_DIR/info/exclude"
fi
if [ "$ignoredonly" ]; then
excl="$excl --ignored"
fi
fi
git ls-files --others --directory $excl ${excl_info:+"$excl_info"} -- "$@" |
while read -r file; do
if [ -d "$file" -a ! -L "$file" ]; then
if [ -z "$cleandir" ]; then
$rm_refuse "$file"
continue
fi
$echo1 "Removing $file"
$rmrf "$file"
else
$echo1 "Removing $file"
$rmf "$file"
fi
done