# GPLv2
name=
+branches=
output=
driver=collapse
+flatten=false
+numbered=false
## Parse options
while [ -n "$1" ]; do
arg="$1"; shift
case "$arg" in
+ -b)
+ branches="$1"; shift;;
+ --flatten)
+ flatten=true;;
+ --numbered)
+ flatten=true;
+ numbered=true;;
--quilt)
driver=quilt;;
--collapse)
driver=collapse;;
-*)
- echo "Usage: tg [...] export ([--collapse] NEWBRANCH | --quilt DIRECTORY)" >&2
+ echo "Usage: tg [...] export ([--collapse] NEWBRANCH | [-b BRANCH1,BRANCH2...] --quilt DIRECTORY)" >&2
exit 1;;
*)
[ -z "$output" ] || die "output already specified ($output)"
done
-name="$(git symbolic-ref HEAD | sed 's#^refs/heads/##')"
-base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
- die "not on a TopGit-controlled branch"
+
+[ -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"
+
+if [ -z "$branches" ]; then
+ # this check is only needed when no branches have been passed
+ name="$(git symbolic-ref HEAD | sed 's#^refs/heads/##')"
+ base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
+ die "not on a TopGit-controlled branch"
+fi
playground="$(mktemp -d -t tg-export.XXXXXX)"
## Collapse driver
-# Trusty Cogito code:
-load_author()
-{
- if [ -z "$GIT_AUTHOR_NAME" ] && echo "$1" | grep -q '^[^< ]'; then
- export GIT_AUTHOR_NAME="$(echo "$1" | sed 's/ *<.*//')"
- fi
- if [ -z "$GIT_AUTHOR_EMAIL" ] && echo "$1" | grep -q '<.*>'; then
- export GIT_AUTHOR_EMAIL="$(echo "$1" | sed 's/.*<\(.*\)>.*/\1/')"
- fi
-}
-
# pretty_tree NAME
# Output tree ID of a cleaned-up tree without tg's artifacts.
pretty_tree()
>"$playground/^body"
# Get commit message and authorship information
- git cat-file blob "$name:.topmsg" >"$playground/^msg"
- while read line; do
- if [ -z "$line" ]; then
- # end of header
- cat >"$playground/^body"
- break
- fi
- case "$line" in
- From:*) load_author "${line#From: }";;
- Subject:*) echo "${line#Subject: }" >>"$playground/^pre";;
- *) echo "$line" >>"$playground/^post";;
- esac
- done <"$playground/^msg"
+ git cat-file blob "$name:.topmsg" | git mailinfo "$playground/^msg" /dev/null > "$playground/^info"
+
+ GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$playground/^info")"
+ GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$playground/^info")"
+ GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$playground/^info")"
+ SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$playground/^info")"
+
+ test -n "$GIT_AUTHOR_NAME" && export GIT_AUTHOR_NAME
+ test -n "$GIT_AUTHOR_EMAIL" && export GIT_AUTHOR_EMAIL
+ test -n "$GIT_AUTHOR_DATE" && export GIT_AUTHOR_DATE
# Determine parent
parent="$(cut -f 1 "$playground/$name^parents")"
$(for p in $parent; do echo -p $p; done))"
fi
- {
- if [ -s "$playground/^pre" ]; then
- cat "$playground/^pre"
- echo
- fi
- cat "$playground/^body"
- [ ! -s "$playground/^post" ] || cat "$playground/^post"
- } | git commit-tree "$(pretty_tree "$name")" -p "$parent"
+ if branch_empty "$name"; then
+ echo "$parent";
+ else
+ (printf '%s\n\n' "$SUBJECT"; cat "$playground/^msg") |
+ git stripspace |
+ git commit-tree "$(pretty_tree "$name")" -p "$parent"
+ fi;
echo "$name" >>"$playground/^ticker"
}
return
fi
- filename="$output/$_dep.diff"
- if [ -e "$filename" ]; then
+ if "$flatten"; then
+ bn="$(echo "$_dep.diff" | sed -e 's#_#__#g' -e 's#/#_#g')";
+ dn="";
+ else
+ bn="$(basename "$_dep.diff")";
+ dn="$(dirname "$_dep.diff")/";
+ if [ "x$dn" = "x./" ]; then
+ dn="";
+ fi;
+ fi;
+
+ if [ -e "$playground/$_dep" ]; then
# We've already seen this dep
return
fi
- echo "Exporting $_dep"
- mkdir -p "$(dirname "$filename")"
- $tg patch "$_dep" >"$filename"
- echo "$_dep.diff -p1" >>"$output/series"
+ mkdir -p "$playground/$(dirname "$_dep")";
+ touch "$playground/$_dep";
+
+ if branch_empty "$_dep"; then
+ echo "Skip empty patch $_dep";
+ else
+ if "$numbered"; then
+ number="$(printf "%04u" $(($(cat "$playground/^number" 2>/dev/null) + 1)))";
+ bn="$number-$bn";
+ echo "$number" >"$playground/^number";
+ fi;
+
+ echo "Exporting $_dep"
+ mkdir -p "$output/$dn";
+ $tg patch "$_dep" >"$output/$dn$bn"
+ echo "$dn$bn -p1" >>"$output/series"
+ fi
}
driver()
{
+ case $_dep in refs/remotes/*) return;; esac
branch_needs_update >/dev/null
[ "$_ret" -eq 0 ] ||
die "cancelling export of $_dep (-> $_name): branch not up-to-date"
# Call driver on all the branches - this will happen
# in topological order.
-recurse_deps driver "$name"
-(_ret=0; _dep="$name"; _name=""; _dep_is_tgish=1; driver)
+if [ -z "$branches" ]; then
+ recurse_deps driver "$name"
+ (_ret=0; _dep="$name"; _name=""; _dep_is_tgish=1; driver)
+else
+ echo "$branches" | tr ',' '\n' | while read _dep; do
+ _dep_is_tgish=1
+ $driver
+ done
+ name="$(echo "$branches" | sed 's/.*,//')"
+fi
if [ "$driver" = "collapse" ]; then
depcount="$(cat "$output/series" | wc -l)"
echo "Exported topic branch $name (total $depcount topics) to directory $output"
fi
+
+# vim:noet
~ian / topgit.git / blobdiff