Use ?:= as the assignement operator for PREFIX.

[adu.git] / adu.ggo

diff --git a/adu.ggo b/adu.ggo
index 84187eb19b7f52667242f9e882fe22872103bb14..873cc22cdca5d2102f27fc3731515c9e84048d3c 100644 (file)
--- a/adu.ggo
+++ b/adu.ggo
@@ -26,17 +26,6 @@ details="
        line option takes precedence.
 "
 
-option "database-dir" d
-#~~~~~~~~~~~~~~~~~~~~~~
-"directory containing the osl tables"
-string typestr="path"
-required
-details="
-       Full path to the directory containing the osl tables. This
-       directory must exist. It must be writable for the user running
-       adu in --create mode and readable in --select mode.
-
-"
 option "loglevel" l
 #~~~~~~~~~~~~~~~~~~
 "Set loglevel (0-6)"
@@ -48,6 +37,46 @@ details="
        goes to stdout. Lower values mean more verbose logging.
 "
 
+defgroup "database"
+#==================
+groupdesc="
+       There are two ways to specify a database directory. You can either
+       specify a full path using the database-dir option or a root path
+       using the database-root option. In the latter case, a directory
+       structure matching that of the base-dir argument is created
+       below the given full path.
+
+       The advantage of using database-root is that the base-dir is
+       used to find the relevant database both in create and select mode
+       and you do not have to care for setting the database-dir explicitly.
+"
+
+groupoption "database-dir" d
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"directory containing the osl tables"
+group="database"
+string typestr="path"
+details="
+       Full path to the directory containing the osl tables. This
+       directory is created if it does not exist. It must be writable for the
+       user running adu in --create mode and readable in --select mode.
+"
+
+groupoption "database-root" r
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"directory containing directories containing the osl tables"
+group="database"
+string typestr="path"
+default="/var/lib/adu"
+dependon="base-dir"
+optional
+details="
+       Base path to the directory containing the osl tables. The real
+       database-dir is generated by appending base-dir. This
+       directory is created if it does not exist. When used in select
+       mode you have to specify the base-dir as well.
+"
+
 ###############
 section "Modes"
 ###############
@@ -58,7 +87,6 @@ groupdesc="
        adu may be started in one of three possible modes, each of
        which corresponds to a different command line option. Exactly
        one of these options must be given.
-
 "
 required
 
@@ -105,7 +133,6 @@ option "base-dir" b
 #~~~~~~~~~~~~~~~~~~
 "directory to traverse"
 string typestr="path"
-dependon="create"
 optional
 details="
        The base directory to be traversed recursively. A warning