diff options
| -rwxr-xr-x | git-filter-branch.sh | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/git-filter-branch.sh b/git-filter-branch.sh index 5401970..0d000ed 100755 --- a/git-filter-branch.sh +++ b/git-filter-branch.sh @@ -8,8 +8,6 @@ # a new branch. You can specify a number of filters to modify the commits, # files and trees. -set -e - USAGE="git-filter-branch [-d TEMPDIR] [FILTERS] DESTBRANCH [REV-RANGE]" . git-sh-setup @@ -141,9 +139,10 @@ git show-ref "refs/heads/$dstbranch" 2> /dev/null && die "branch $dstbranch already exists" test ! -e "$tempdir" || die "$tempdir already exists, please remove it" -mkdir -p "$tempdir/t" -cd "$tempdir/t" -workdir="$(pwd)" +mkdir -p "$tempdir/t" && +cd "$tempdir/t" && +workdir="$(pwd)" || +die "" case "$GIT_DIR" in /*) @@ -155,12 +154,12 @@ esac export GIT_DIR GIT_WORK_TREE=. export GIT_INDEX_FILE="$(pwd)/../index" -git read-tree # seed the index file +git read-tree || die "Could not seed the index" ret=0 - -mkdir ../map # map old->new commit ids for rewriting parents +# map old->new commit ids for rewriting parents +mkdir ../map || die "Could not create map/ directory" case "$filter_subdir" in "") @@ -170,7 +169,7 @@ case "$filter_subdir" in *) git rev-list --reverse --topo-order --default HEAD \ --parents --full-history "$@" -- "$filter_subdir" -esac > ../revs +esac > ../revs || die "Could not get the commits" commits=$(wc -l <../revs | tr -d " ") test $commits -eq 0 && die "Found nothing to rewrite" @@ -186,10 +185,11 @@ while read commit parents; do ;; *) git read-tree -i -m $commit:"$filter_subdir" - esac + esac || die "Could not initialize the index" export GIT_COMMIT=$commit - git cat-file commit "$commit" >../commit + git cat-file commit "$commit" >../commit || + die "Cannot read commit $commit" eval "$(set_ident AUTHOR <../commit)" || die "setting author failed for commit $commit" @@ -199,7 +199,8 @@ while read commit parents; do die "env filter failed: $filter_env" if [ "$filter_tree" ]; then - git checkout-index -f -u -a + git checkout-index -f -u -a || + die "Could not checkout the index" # files that $commit removed are now still in the working tree; # remove them, else they would be added again git ls-files -z --others | xargs -0 rm -f @@ -240,7 +241,8 @@ case "$target_head" in echo Nothing rewritten ;; *) - git update-ref refs/heads/"$dstbranch" $target_head + git update-ref refs/heads/"$dstbranch" $target_head || + die "Could not update $dstbranch with $target_head" if [ $(wc -l <../map/$src_head) -gt 1 ]; then echo "WARNING: Your commit filter caused the head commit to expand to several rewritten commits. Only the first such commit was recorded as the current $dstbranch head but you will need to resolve the situation now (probably by manually merging the other commits). These are all the commits:" >&2 sed 's/^/ /' ../map/$src_head >&2 @@ -277,7 +279,8 @@ if [ "$filter_tag_name" ]; then warn "unreferencing tag object $sha1t" fi - git update-ref "refs/tags/$new_ref" "$new_sha1" + git update-ref "refs/tags/$new_ref" "$new_sha1" || + die "Could not write tag $new_ref" done fi |