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Introduce GIT_DIR environment variable.

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During the mailing list discussion on renaming GIT_ environment
variables, people felt that having one environment that lets the
user (or Porcelain) specify both SHA1_FILE_DIRECTORY (now
GIT_OBJECT_DIRECTORY) and GIT_INDEX_FILE for the default layout
would be handy.  This change introduces GIT_DIR environment
variable, from which the defaults for GIT_INDEX_FILE and
GIT_OBJECT_DIRECTORY are derived.  When GIT_DIR is not defined,
it defaults to ".git".  GIT_INDEX_FILE defaults to
"$GIT_DIR/index" and GIT_OBJECT_DIRECTORY defaults to
"$GIT_DIR/objects".

Special thanks for ideas and discussions go to Petr Baudis and
Daniel Barkalow.  Bugs are mine ;-)

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2005-05-09 22:57:58 -07:00
parent d19938ab60
commit 8ac069ac0a
7 changed files with 81 additions and 35 deletions
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16
git-prune-script
View File

@ -11,6 +11,9 @@ do
shift;
done
: ${GIT_DIR=.git}
: ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
# Defaulting to include .git/refs/*/* may be debatable from the
# purist POV but power users can always give explicit parameters
# to the script anyway.
@ -19,7 +22,8 @@ case "$#" in
0)
x_40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
x_40="$x_40$x_40$x_40$x_40$x_40$x_40$x_40$x_40"
set x $(sed -ne "/^$x_40\$/p" .git/HEAD .git/refs/*/* 2>/dev/null)
set x $(sed -ne "/^$x_40\$/p" \
"$GIT_DIR"/HEAD "$GIT_DIR"/refs/*/* /dev/null 2>/dev/null)
shift ;;
esac
@ -28,13 +32,7 @@ sed -ne '/unreachable /{
s/unreachable [^ ][^ ]* //
s|\(..\)|\1/|p
}' | {
for d in "$GIT_OBJECT_DIRECTORY" "$SHA1_FILE_DIRECTORY" ''
do
test "$d" != "" && test -d "$d" && break
done
case "$d" in
'') cd .git/objects/ ;;
*) cd "$d" ;;
esac || exit
cd "$GIT_OBJECT_DIRECTORY" || exit
xargs -r $dryrun rm -f
}