vendor/getinfo: Provide command to determine vendor to use

Introduce the 'current' command to eventually replace the current
symbolic link. The current command does roughly the same as the
makefile, the code has just been cleaned up a bit to work better
as a shell function.

Gbp-Dch: ignore

diff --git a/vendor/getinfo b/vendor/getinfo
index 79da83620f1f7af93720a74a93cf19588a2f048f..4f94d7c425c802d329db7a9c845256220f728f5e 100755 (executable)
--- a/vendor/getinfo
+++ b/vendor/getinfo
@@ -2,7 +2,41 @@
 # small helper to extract information form *.ent files
 
 BASEDIR="$(readlink -f "$(dirname $0)")"
-INFO="$(readlink -f "${BASEDIR}/current/apt-vendor.ent")"
+
+getcurrent() {
+       # search for an exact match to use the correct sources.list example
+       cd $BASEDIR
+       DISTROS="$(find -mindepth 1 -maxdepth 1 -type d | cut -d'/' -f 2)"
+       for DISTRO in $DISTROS; do
+               if dpkg-vendor --is $DISTRO; then
+                       echo $DISTRO
+                       return 0
+               fi
+       done
+
+       # if we haven't found a specific, look for a deriving
+       # we do ubuntu and debian last as those are the biggest families
+       # and would therefore potentially 'shadow' smaller families
+       # (especially debian as it sorts quiet early)
+       for DISTRO in $DISTROS; do
+               if [ "$DISTRO" = 'debian' -o "$DISTRO" = 'ubuntu' ]; then continue; fi
+               if dpkg-vendor --derives-from $DISTRO; then
+                       echo $DISTRO
+                       return 0
+               fi
+       done
+
+       # Do the ubuntu/debian dance we talked about
+       if dpkg-vendor --derives-from ubuntu; then
+               echo $DISTRO
+               return 0
+       fi
+
+       echo debian
+       return 0
+}
+
+INFO="$(readlink -f "${BASEDIR}/$(getcurrent)/apt-vendor.ent")"
 VERBATIM="${BASEDIR}/../doc/apt-verbatim.ent"
 
 if [ -z "$INFO" ] || [ ! -e "$INFO" ]; then
@@ -33,6 +67,10 @@ vendor)
 verbatim)
        getfield "$2" "$VERBATIM"
        ;;
+
+current)
+       getcurrent
+       ;;
 *)
        echo >&2 "Unknown data field $1 requested"
        exit 2