config: add new functions

This patch add two new functions:
config_get_id_from_config()
config_get_hook_from_config

Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/functions/functions.config b/src/functions/functions.config
index 854f4907fcdb24f1bdcc1c09454f62183db0414f..e11a1c2b1736f4eabea78c3809f31f6a83dfffa0 100644 (file)
--- a/src/functions/functions.config
+++ b/src/functions/functions.config
@@ -51,3 +51,23 @@ config_domainname() {
        # the domain part.
        print "${hostname#*.}"
 }
+
+config_get_id_from_config() {
+       # This function returns the id for a given config name
+       # Example 'dhcp.0' => 0
+       assert [ $# -eq 1 ]
+       local config=${1}
+
+       local hook=$(config_get_hook_from_config ${config})
+       echo "${config//"${hook}."/}"
+
+}
+
+config_get_hook_from_config() {
+       # This function returns the hook for a given config name
+       # Example 'dhcp.0' => dhcp
+       assert [ $# -eq 1 ]
+       local config=${1}
+
+       echo "${config//.*[[:digit:]]/}"
+}