X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=topgit.git;a=blobdiff_plain;f=tg-summary.sh;h=3c90a6b5952e526bac9da80e84386d6abf6246a8;hp=3905bdce7dc1d934a7862c025c4fb772c52660d6;hb=4956e5734d10ac88fcca7276b402f1157644cb9b;hpb=f5e3413132a2403ab97833bac4644d3d7ee3253e

diff --git a/tg-summary.sh b/tg-summary.sh
index 3905bdc..3c90a6b 100644
--- a/tg-summary.sh
+++ b/tg-summary.sh
@@ -4,6 +4,7 @@
 # GPLv2
 
 terse=
+graphviz=
 
 
 ## Parse options
@@ -13,14 +14,36 @@ while [ -n "$1" ]; do
 	case "$arg" in
 	-t)
 		terse=1;;
+	--graphviz)
+		graphviz=1;;
 	*)
-		echo "Usage: tg [...] summary [-t]" >&2
+		echo "Usage: tg [...] summary [-t | --graphviz]" >&2
 		exit 1;;
 	esac
 done
 
 curname="$(git symbolic-ref HEAD | sed 's#^refs/\(heads\|top-bases\)/##')"
 
+if [ -n "$graphviz" ]; then
+	cat <<EOT
+# GraphViz output; pipe to:
+#   | dot -Tpng -o <ouput>
+# or
+#   | dot -Txlib
+
+digraph G {
+
+graph [
+  rankdir = "TB"
+  label="TopGit Layout\n\n\n"
+  fontsize = 14
+  labelloc=top
+  pad = "0.5,0.5"
+];
+
+EOT
+fi
+
 
 ## List branches
 
@@ -31,6 +54,12 @@ git for-each-ref refs/top-bases |
 			echo "$name"
 			continue
 		fi
+		if [ -n "$graphviz" ]; then
+			git cat-file blob "$name:.topdeps" | while read dep; do
+				echo "\"$name\" -> \"$dep\";"
+			done
+			continue
+		fi
 
 		missing_deps=
 
@@ -65,3 +94,7 @@ git for-each-ref refs/top-bases |
 		printf '%s\t%-31s\t%s\n' "$current$nonempty$remote$rem_update$deps_update$deps_missing$base_update" \
 			"$name" "$subject"
 	done
+
+if [ -n "$graphviz" ]; then
+	echo '}'
+fi