From 986c163040b060574e6a07426fdc5cb4ee310e0c Mon Sep 17 00:00:00 2001
From: Haruue Icymoon <i@haruue.moe>
Date: Tue, 29 Nov 2022 12:33:04 +0800
Subject: [PATCH] feat(install_server.sh): version number format

validate user specified version number format should begin with 'v'
---
 install_server.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/install_server.sh b/install_server.sh
index 785c114..2cded4e 100755
--- a/install_server.sh
+++ b/install_server.sh
@@ -146,6 +146,21 @@ error() {
   echo -e "$SCRIPT_NAME: $(tred)error: $_msg$(treset)"
 }
 
+has_prefix() {
+    local _s="$1"
+    local _prefix="$2"
+
+    if [[ -z "$_prefix" ]]; then
+        return 0
+    fi
+
+    if [[ -z "$_s" ]]; then
+        return 1
+    fi
+
+    [[ "x$_s" != "x${_s#"$_prefix"}" ]]
+}
+
 systemctl() {
   if [[ "x$FORCE_NO_SYSTEMD" == "x2" ]] || ! has_command systemctl; then
     warning "Ignored systemd command: systemctl $@"
@@ -501,6 +516,9 @@ parse_arguments() {
           show_argument_error_and_exit "Please specify the version for option '--version'."
         fi
         shift
+        if ! has_prefix "$VERSION" 'v'; then
+          show_argument_error_and_exit "Version numbers should begin with 'v' (such like 'v1.3.1'), got '$VERSION'"
+        fi
         ;;
       '-c' | '--check')
         if [[ -n "$OPERATION" && "$OPERATION" != 'check' ]]; then