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#!/bin/sh
set -e
fail () { echo >&2 "$0: $*"; exit 1; }
case "$#.$1" in
2.edit|2.done) mode="$1"; arg="$2" ;;
2.-*) fail "no options understood" ;;
*) fail "usage: gitrepo-edit edit|done DIRECTORY" ;;
esac
case "$arg" in
*.git.tar) base=${arg%.tar} ;;
*.git.edit) base=${arg%.edit} ;;
*.git) base=${arg} ;;
*) fail "arg must end in .git[.tar]" ;;
esac
tryat_pre () {
local b="$1"
rm -rf "$b.tmp"
if test -f "$b.tar" && test -f "$b.edit"; then
echo "$b.edit exists, deleting possibly-obsolete $b.tar"
rm "$b.tar"
fi
}
tryat_edit () {
local b="$1"
local i="$2"
if test -d "$b.edit"; then
echo "$b.edit already exists"
exit 0
fi
if test -f "$b.tar"; then
mkdir "$b.tmp"
(set -e; cd "$b.tmp"; tar xf "$b.tar")
mv "$b.tmp/$i" "$b.edit"
rm "$b.tar"
rm -rf "$b.tmp"
echo "$b.edit ready"
exit 0
fi
}
tryat_done () {
local b="$1"
local i="$2"
if test -d "$b.edit"; then
mkdir "$b.tmp"
cp -al "$b.edit" "$b.tmp/$i"
(set -e; cd "$b.tmp"; tar cf "$b.tmp/tar $i")
mv "$b.tmp/tar" "$b.tar"
rm -rf "$b.tmp"
mv "$b.edit" "$b.tmp"
rm -rf "$b.tmp"
echo "$b.tar regenerated"
exit 0
fi
if test -f "$b.tar"; then
echo "$b.tar already exists and $b.edit doesn't"
exit 0
fi
}
tryat () {
local b="$1"
local i="${b##*/}"
case "$i" in *_*.git) i="${i%_*.git}.git";; esac
if ! test -f "$b.tar" && ! test -f "$b.edit"; then
return
fi
tryat_pre "$b" "$i"
tryat_$mode "$b" "$i"
fail "unexpected situation in $b.*"
}
case "$arg" in
/*) tryat "$base"
;;
*)
pwd=`pwd`
tryat "$pwd/$base"
tryat "$pwd/git-srcs/$base"
tryat "$pwd/tests/git-srcs/$base"
fail "could not find $base..."
;;
esac
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