This uses the tred(1) and gvpr(1) program from the graphviz package to reduce
the dependencies of the given TopGit branch.
Signed-off-by: Bert Wesarg <bert.wesarg@xxxxxxxxxxxxxx>
---
.gitignore | 2 ++
README | 22 ++++++++++++++++++++++
tg-tred.sh | 47 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
index eb56446..1061d93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,8 @@
/tg-patch.txt
/tg-summary
/tg-summary.txt
+/tg-tred
+/tg-tred.txt
/tg-update
/tg-update.txt
/tg-export
diff --git a/README b/README
index d2f095d..a941cb6 100644
--- a/README
+++ b/README
@@ -480,6 +480,28 @@ tg update
TODO: tg update -a for updating all topic branches
+tg tred
+~~~~~~~
+ Prints the transitive reduction of the dependecies for the current
+ or named TopGit branch.
+
+ To actually use this reduced dependencies list, feed the output into
+ the .topdeps file, commit and run tg update, like:
+
+ $ tg tred > .topdeps
+ $ tg add -f .topdeps
+ $ git commit -m "transitive reduce TopGit dependencies"
+ $ tg update
+
+ If you want to see the differences to the current dependencies, run
+ this:
+
+ $ diff -u -L current -L tred <(git show :.topdeps) <(tg tred)
+
+ TODO: tg tred -a for reducing all branches
+ TODO: tg tred -r for reducing recursive all from the current/named
+ branch
+
TODO: tg rename
diff --git a/tg-tred.sh b/tg-tred.sh
new file mode 100644
index 0000000..f41e051
--- /dev/null
+++ b/tg-tred.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+# TopGit - A different patch queue manager
+# (c) Petr Baudis <pasky@xxxxxxx> 2008
+# (c) Bert Wesarg <bert.wesarg@xxxxxxxxxxxxxx> 2009
+# GPLv2
+
+name=
+
+
+## Parse options
+
+while [ -n "$1" ]; do
+ arg="$1"; shift
+ case "$arg" in
+ -*)
+ echo "Usage: tg [...] tred [NAME]" >&2
+ exit 1;;
+ *)
+ [ -z "$name" ] || die "name already specified ($name)"
+ name="$arg";;
+ esac
+done
+
+[ -n "$name" ] || name="$(git symbolic-ref HEAD | sed 's#^refs/\(heads\|top-bases\)/##')"
+base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
+ die "not a TopGit-controlled branch"
+
+type tred >/dev/null 2>&1 ||
+ die "need the tred(1) tool from the graphviz package"
+type gvpr >/dev/null 2>&1 ||
+ die "need the gvpr(1) tool from the graphviz package"
+
+$tg summary --graphviz |
+ tred |
+ gvpr -a "\"${name}\"" '
+BEG_G {
+ node_t ctr;
+ edge_t e;
+
+ ctr = isNode($, ARGV[0]);
+ for (e = fstedge(ctr); e; e = nxtedge(e,ctr)) {
+ if (e.head.name != ARGV[0])
+ printf("%s\n", e.head.name);
+ }
+ exit(0);
+}
+'
--
tg: (fcb488d..) bw/tred (depends on: master)
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