Added tab-completion to checkver

_bin/checkver.sh

@@ -2,6 +2,8 @@
 SCRIPT_DIR=${SCRIPT_DIR:-"$( cd -- "$( dirname -- "$0" )" &> /dev/null && pwd )"}
  
 set -e
+BASE_NAME="${0##*/}"
+SCRIPT_NAME="${SCRIPT_DIR}/${BASE_NAME}"
 
 # Function to compare semantic versions
 compare_major_version() {
@@ -20,7 +22,7 @@ if [[ "${1}" =~ ^(-h|--help$) ]]; then
         "Query runtipi's current version and compares with what is available online" \
         "" \
         "Usage:" \
-        "    ${0##*/} -h | --help | [next] [<version>] " \
+        "    ${BASE_NAME} -h | --help | [next] [<version>] " \
         "" \
         "Arguments:" \
         "    -h | --help    Display usage" \
@@ -36,7 +38,51 @@ if [[ "${1}" =~ ^(-h|--help$) ]]; then
         "                   major versions do not match"
     exit 1
 fi
- 
+
+# --- tab completion ---
+completion_bash() {
+cat <<EOF
+    _runtipi_checkver()
+    {
+        local cur prev opts
+        COMPREPLY=()
+        cur="\${COMP_WORDS[COMP_CWORD]}"
+        prev="\${COMP_WORDS[COMP_CWORD-1]}"
+        opts="next --help -h"
+
+        case "\${prev}" in
+            next)
+                COMPREPLY=( \$(compgen -W "\$("${SCRIPT_NAME}" --next)" -- \${cur}) )
+                return 0
+                ;;
+            *)
+                COMPREPLY=( \$(compgen -W "\${opts}" -- \${cur}) )
+                return 0
+                ;;
+        esac
+    }
+    complete -F _runtipi_checkver ${BASE_NAME}
+EOF
+}
+
+completion_zsh() {
+cat <<EOF
+    _runtipi_checkver() {
+        _values "version" next --help -h
+    }
+    compdef _runtipi_checkver ${BASE_NAME}
+EOF
+}
+
+if [ "$1" == "completion" ]; then
+    if [ "$2" == "bash" ]; then
+        completion_bash
+    elif [ "$2" == "zsh" ]; then
+        completion_zsh
+    fi
+    exit 0
+fi
+
 # Get Current Version of Runtipi
 runtipi_path=${RUNTIPI_DIR:-"$(cd -- "${SCRIPT_DIR}/../.." &> /dev/null && pwd )"}
 current_version="$1"
@@ -97,3 +143,4 @@ elif [ "$next_tag" != "$current_version" ]; then
     compare_major_version "$next_tag" "$current_version"
 fi
 
+# vim: set ft=sh expandtab tabstop=4 shiftwidth=4: