started basic bash completion (oetiker#242)

* started basic bash completion

* extend bash completion for list

Author: morph027

bash_completion.d/znapzendzetup

@@ -0,0 +1,77 @@
+#!/bin/bash
+
+# Copyright (c) 2016, Stefan Heitmüller <[email protected]>
+
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation
+# files (the "Software"), to deal in the Software without
+# restriction, including without limitation the rights to use,
+# copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following
+# conditions:
+
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+if [[ -w /dev/zfs ]]; then
+    __ZFS_CMD="zfs"
+    __ZNAPZENDZETUP_CMD="znapzendzetup"
+else
+    __ZFS_CMD="sudo zfs"
+    __ZNAPZENDZETUP_CMD="sudo znapzendzetup"
+fi
+
+__znapzendzetup_get_commands()
+{
+    $__ZNAPZENDZETUP_CMD | awk '/^\s{8}[a-z]/ {print $1}' | cut -f1 -d '|' | uniq | sort
+}
+
+__znapzendzetup_list_datasets()
+{
+    $__ZNAPZENDZETUP_CMD list 2>&1 | grep -E '^*** backup plan: .* ***$' | awk '{print $(NF-1)}' | uniq | sort
+}
+
+__zfs_list_datasets()
+{
+    $__ZFS_CMD list -H -o name -t filesystem,volume
+}
+
+__znapzendzetup_complete()
+{
+    local cur prev cmd cmds
+    COMPREPLY=()
+    # Don't split on colon
+    _get_comp_words_by_ref -n : -c cur -p prev -w COMP_WORDS -i COMP_CWORD
+    cmd="${COMP_WORDS[1]}"
+
+    if [[ ${prev##*/} == znapzendzetup ]]
+    then
+        cmds=$(__znapzendzetup_get_commands)
+        COMPREPLY=($(compgen -W "$cmds -?" -- "$cur"))
+        return 0
+    fi
+
+    case "${cmd}" in
+        create|delete|edit|enable|disable|export|list)
+                COMPREPLY=($(compgen -W "$(__znapzendzetup_list_datasets)" -- "$cur"))
+        ;;
+        import)
+		COMPREPLY=($(compgen -W "$(__zfs_list_datasets)" -- "$cur"))
+        ;;
+    esac
+
+    __ltrim_colon_completions "$cur"
+    return 0
+}
+
+complete -F __znapzendzetup_complete znapzendzetup