test $commits -eq 0 && die "Found nothing to rewrite"
# Rewrite the commits
+report_progress ()
+{
+ if test -n "$progress" &&
+ test $git_filter_branch__commit_count -gt $next_sample_at
+ then
+ count=$git_filter_branch__commit_count
+
+ now=$(date +%s)
+ elapsed=$(($now - $start_timestamp))
+ remaining=$(( ($commits - $count) * $elapsed / $count ))
+ if test $elapsed -gt 0
+ then
+ next_sample_at=$(( ($elapsed + 1) * $count / $elapsed ))
+ else
+ next_sample_at=$(($next_sample_at + 1))
+ fi
+ progress=" ($elapsed seconds passed, remaining $remaining predicted)"
+ fi
+ printf "\rRewrite $commit ($count/$commits)$progress "
+}
git_filter_branch__commit_count=0
+
+progress= start_timestamp=
+if date '+%s' 2>/dev/null | grep -q '^[0-9][0-9]*$'
+then
+ next_sample_at=0
+ progress="dummy to ensure this is not empty"
+ start_timestamp=$(date '+%s')
+fi
+
+if test -n "$filter_index" ||
+ test -n "$filter_tree" ||
+ test -n "$filter_subdir"
+then
+ need_index=t
+else
+ need_index=
+fi
+
while read commit parents; do
git_filter_branch__commit_count=$(($git_filter_branch__commit_count+1))
- printf "\rRewrite $commit ($git_filter_branch__commit_count/$commits)"
+
+ report_progress
case "$filter_subdir" in
"")
- GIT_ALLOW_NULL_SHA1=1 git read-tree -i -m $commit
+ if test -n "$need_index"
+ then
+ GIT_ALLOW_NULL_SHA1=1 git read-tree -i -m $commit
+ fi
;;
*)
# The commit may not have the subdirectory at all
} <../commit |
eval "$filter_msg" > ../message ||
die "msg filter failed: $filter_msg"
+
+ if test -n "$need_index"
+ then
+ tree=$(git write-tree)
+ else
+ tree=$(git rev-parse "$commit^{tree}")
+ fi
workdir=$workdir @SHELL_PATH@ -c "$filter_commit" "git commit-tree" \
- $(git write-tree) $parentstr < ../message > ../map/$commit ||
+ "$tree" $parentstr < ../message > ../map/$commit ||
die "could not write rewritten commit"
done <../revs