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don't backup files if they're binary-equivalent

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This commit is contained in:
Connor Olding 2017-03-29 08:05:51 +00:00
parent a48a94fc84
commit 9e29489e84
1 changed files with 13 additions and 2 deletions
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15
install
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@ -18,6 +18,14 @@ dotless() {
}
backup() {
if [ -n "$2" ] && [ $hassum -eq 1 ]; then
old="$(sha256sum "$1")"
new="$(sha256sum "$2")"
if [ "${new%% *}" == "${old%% *}" ]; then
note "overwriting $1"
return 0
fi
fi
note "backing up $1"
mkdir -p "${backup_dir:?backup_dir unset}/$(dirname "$1")"
[ -e "$backup_dir/$1" ] && die "backup already exists"
@ -29,7 +37,7 @@ hardlink() {
[ "$1" -ef "$2" ] && return
[ -h "$1" ] && note "removing symbolic link $1" && rm "$1"
if [ -s "$1" ]; then
backup "$1" || die "$1 already exists"
backup "$1" "$2" || die "$1 already exists"
fi
fi
@ -75,9 +83,11 @@ softlink_pseudo() {
if [ -d "$d2" ]; then
:
elif [ ! "$d1" -ef "$d2" ]; then
[ "$d1" == ".vim/.netrwhist" ] && continue
[ "$d1" == ".vim/backup" ] && continue
[ "$d1" == ".vim/bundle" ] && continue
[ "$d1" == ".vim/swp" ] && continue
[ "$d1" == ".vim/undo" ] && continue
[ "$d1" == ".vim/.netrwhist" ] && continue
warn "new destination file. consider manually moving it:"
warn "$d1"
fi
@ -94,6 +104,7 @@ softlink() {
}
which readlink >/dev/null || exit 1
which sha256sum >/dev/null && hassum=1 || hassum=0
rc="$(readlink -f "$(dirname "$0")" )"
cd "$HOME"