tg summary --graphviz: Dot-suitable dependency graph

[topgit.git] / tg-summary.sh

diff --git a/tg-summary.sh b/tg-summary.sh
index bb71971aad2055c2d7d8388e59b4091dd9650256..3c90a6b5952e526bac9da80e84386d6abf6246a8 100644 (file)
--- a/tg-summary.sh
+++ b/tg-summary.sh
@@ -3,22 +3,64 @@
 # (c) Petr Baudis <pasky@suse.cz>  2008
 # GPLv2
 
+terse=
+graphviz=
+
 
 ## Parse options
 
-if [ -n "$1" ]; then
-       echo "Usage: tg summary" >&2
-       exit 1
-fi
+while [ -n "$1" ]; do
+       arg="$1"; shift
+       case "$arg" in
+       -t)
+               terse=1;;
+       --graphviz)
+               graphviz=1;;
+       *)
+               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
 
 git for-each-ref refs/top-bases |
        while read rev type ref; do
                name="${ref#refs/top-bases/}"
+               if [ -n "$terse" ]; then
+                       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=
 
                current=' '
@@ -29,11 +71,11 @@ git for-each-ref refs/top-bases |
                [ -z "$base_remote" ] || remote='l'
                ! has_remote "$name" || remote='r'
                rem_update=' '
-               [ "$remote" != 'r' ] || {
+               [ "$remote" != 'r' ] || ! ref_exists "refs/remotes/$base_remote/top-bases/$name" || {
                        branch_contains "refs/top-bases/$name" "refs/remotes/$base_remote/top-bases/$name" &&
                        branch_contains "$name" "refs/remotes/$base_remote/$name"
                } || rem_update='R'
-               [ "$rem_update" = 'R' ] || branch_contains "refs/remotes/$base_remote/$name" "$name" ||
+               [ "$rem_update" = 'R' ] || branch_contains "refs/remotes/$base_remote/$name" "$name" 2>/dev/null ||
                        rem_update='L'
                deps_update=' '
                needs_update "$name" >/dev/null || deps_update='D'
@@ -52,3 +94,7 @@ git for-each-ref refs/top-bases |
                printf '%s\t%-31s\t%s\n' "$current$nonempty$remote$rem_update$deps_update$deps_missing$base_update" \
                        "$name" "$subject"
        done
+
+if [ -n "$graphviz" ]; then
+       echo '}'
+fi