output=
driver=collapse
flatten=false
+numbered=false
## Parse options
branches="$1"; shift;;
--flatten)
flatten=true;;
+ --numbered)
+ flatten=true;
+ numbered=true;;
--quilt)
driver=quilt;;
--collapse)
driver=collapse;;
+ --linearize)
+ driver=linearize;;
-*)
- echo "Usage: tg [...] export ([--collapse] NEWBRANCH | [-b BRANCH1,BRANCH2...] --quilt DIRECTORY)" >&2
+ echo "Usage: tg [...] export ([--collapse] NEWBRANCH | [-b BRANCH1,BRANCH2...] --quilt DIRECTORY | --linearize NEWBRANCH)" >&2
exit 1;;
*)
[ -z "$output" ] || die "output already specified ($output)"
[ -z "$branches" -o "$driver" = "quilt" ] ||
die "-b works only with the quilt driver"
+[ "$driver" = "quilt" ] || ! "$numbered" ||
+ die "--numbered works only with the quilt driver";
+
[ "$driver" = "quilt" ] || ! "$flatten" ||
die "--flatten works only with the quilt driver"
git write-tree)
}
-# collapsed_commit NAME
-# Produce a collapsed commit of branch NAME.
-collapsed_commit()
+create_tg_commit()
{
name="$1"
-
- rm -f "$playground/^pre" "$playground/^post"
- >"$playground/^body"
+ tree="$2"
+ parent="$3"
# Get commit message and authorship information
git cat-file blob "$name:.topmsg" | git mailinfo "$playground/^msg" /dev/null > "$playground/^info"
test -n "$GIT_AUTHOR_EMAIL" && export GIT_AUTHOR_EMAIL
test -n "$GIT_AUTHOR_DATE" && export GIT_AUTHOR_DATE
+ (printf '%s\n\n' "$SUBJECT"; cat "$playground/^msg") |
+ git stripspace |
+ git commit-tree "$tree" -p "$parent"
+}
+
+# collapsed_commit NAME
+# Produce a collapsed commit of branch NAME.
+collapsed_commit()
+{
+ name="$1"
+
+ rm -f "$playground/^pre" "$playground/^post"
+ >"$playground/^body"
+
# Determine parent
parent="$(cut -f 1 "$playground/$name^parents")"
if [ "$(cat "$playground/$name^parents" | wc -l)" -gt 1 ]; then
if branch_empty "$name"; then
echo "$parent";
else
- (printf '%s\n\n' "$SUBJECT"; cat "$playground/^msg") |
- git stripspace |
- git commit-tree "$(pretty_tree "$name")" -p "$parent"
+ create_tg_commit "$name" "$(pretty_tree $name)" "$parent"
fi;
echo "$name" >>"$playground/^ticker"
fi;
fi;
- filename="$output/$dn$bn";
- if [ -e "$filename" ]; then
+ if [ -e "$playground/$_dep" ]; then
# We've already seen this dep
return
fi
+ mkdir -p "$playground/$(dirname "$_dep")";
+ touch "$playground/$_dep";
+
if branch_empty "$_dep"; then
echo "Skip empty patch $_dep";
else
+ if "$numbered"; then
+ number="$(echo $(($(cat "$playground/^number" 2>/dev/null) + 1)))";
+ bn="$(printf "%04u-$bn" $number)";
+ echo "$number" >"$playground/^number";
+ fi;
+
echo "Exporting $_dep"
mkdir -p "$output/$dn";
- $tg patch "$_dep" >"$filename"
+ $tg patch "$_dep" >"$output/$dn$bn"
echo "$dn$bn -p1" >>"$output/series"
fi
}
+linearize()
+{
+ if test ! -f "$playground/^BASE"; then
+ head="$(git rev-parse --verify "$_dep")"
+ echo "$head" > "$playground/^BASE"
+ git checkout -q "$head"
+ return;
+ fi;
+
+ head=$(git rev-parse --verify HEAD)
+
+ if [ -z "$_dep_is_tgish" ]; then
+ # merge in $_dep unless already included
+ rev="$(git rev-parse --verify "$_dep")";
+ common="$(git merge-base --all HEAD "$_dep")";
+ if test "$rev" = "$common"; then
+ # already included, just skip
+ :;
+ else
+ retmerge=0;
+
+ git merge -s recursive "$_dep" || retmerge="$?";
+ if test "x$retmerge" != "x0"; then
+ echo fix up the merge, commit and then exit;
+ #todo error handling
+ sh -i </dev/tty;
+ fi;
+ fi;
+ else
+ retmerge=0;
+
+ git merge-recursive "$(pretty_tree "refs/top-bases/$_dep")" -- HEAD "$(pretty_tree "refs/heads/$_dep")" || retmerge="$?";
+
+ if test "x$retmerge" != "x0"; then
+ git rerere;
+ echo "fix up the merge and update the index. Don't commit!"
+ #todo error handling
+ sh -i </dev/tty;
+ fi
+
+ result_tree=$(git write-tree)
+ # testing branch_empty might not always give the right answer.
+ # It can happen that the patch is non-empty but still after
+ # linearizing there is no change. So compare the trees.
+ if test "x$result_tree" = "x$(git rev-parse $head^{tree})"; then
+ echo "skip empty commit $_dep";
+ else
+ newcommit=$(create_tg_commit "$_dep" "$result_tree" HEAD)
+ git update-ref HEAD $newcommit $head
+ echo "exported commit $_dep";
+ fi
+ fi
+}
## Machinery
-if [ "$driver" = "collapse" ]; then
+if [ "$driver" = "collapse" ] || [ "$driver" = "linearize" ]; then
[ -n "$output" ] ||
die "no target branch specified"
! ref_exists "$output" ||
elif [ "$driver" = "quilt" ]; then
depcount="$(cat "$output/series" | wc -l)"
echo "Exported topic branch $name (total $depcount topics) to directory $output"
+
+elif [ "$driver" = "linearize" ]; then
+ git checkout -q -b $output
+
+ echo $name
+ if test $(git rev-parse "$(pretty_tree $name)^{tree}") != $(git rev-parse "HEAD^{tree}"); then
+ echo "Warning: Exported result doesn't match";
+ echo "tg-head=$(git rev-parse "$name"), exported=$(git rev-parse "HEAD")";
+ #git diff $head HEAD;
+ fi;
+
fi
# vim:noet
~ian / topgit.git / blobdiff