重构代码, 将变量改为大写

bin/port.sh

@@ -8,27 +8,27 @@
 #   $2: 结束端口（默认 65535）
 #   $3: 最大随机尝试次数（默认 100）
 find_free_port() {
-  local start="${1:-10001}"
-  local max="${2:-65535}"
-  local attempts="${3:-100}"
+  local START="${1:-10001}"
+  local MAX="${2:-65535}"
+  local ATTEMPTS="${3:-100}"
 
   # ------------------------------------------------------------
   # 收集当前正在监听的端口（TCP + UDP）
   # 优先使用 ss，其次 netstat
   # ------------------------------------------------------------
-  local used_ports raw
+  local USED_PORTS RAW
   if command -v ss >/dev/null 2>&1; then
     # ss 输出示例：
     # LISTEN 0 128 0.0.0.0:22
-    raw=$(ss -lntu 2>/dev/null || true)
-    used_ports=$(printf "%s\n" "$raw" \
+    RAW=$(ss -lntu 2>/dev/null || true)
+    USED_PORTS=$(printf "%s\n" "$RAW" \
       | awk '{print $5}' \
       | sed -E 's/.*[:]//g')
   elif command -v netstat >/dev/null 2>&1; then
     # netstat 输出示例：
     # tcp 0 0 0.0.0.0:22
-    raw=$(netstat -lntu 2>/dev/null || true)
-    used_ports=$(printf "%s\n" "$raw" \
+    RAW=$(netstat -lntu 2>/dev/null || true)
+    USED_PORTS=$(printf "%s\n" "$RAW" \
       | awk '{print $4}' \
       | sed -E 's/.*[:]//g')
   else
@@ -40,12 +40,12 @@ find_free_port() {
   # 将已占用端口存入关联数组，便于 O(1) 判断
   # 需要 bash 4+
   # ------------------------------------------------------------
-  declare -A used_map
-  local p
-  for p in $used_ports; do
+  declare -A USED_MAP
+  local P
+  for P in $USED_PORTS; do
     # 过滤非数字字段（如 *、:::）
-    if [[ $p =~ ^[0-9]+$ ]]; then
-      used_map["$p"]=1
+    if [[ $P =~ ^[0-9]+$ ]]; then
+      USED_MAP["$P"]=1
     fi
   done
 
@@ -53,14 +53,14 @@ find_free_port() {
   # 随机尝试若干次
   # 每次随机生成一个端口，只要未被监听就立即返回
   # ------------------------------------------------------------
-  local port i
-  for ((i=0; i<attempts; i++)); do
+  local PORT I
+  for ((I=0; I<ATTEMPTS; I++)); do
     # 在 [start, max] 范围内生成随机端口
-    port=$(( RANDOM % (max - start + 1) + start ))
+    PORT=$(( RANDOM % (MAX - START + 1) + START ))
 
     # 如果端口不在已监听表中，则认为可用
-    if [[ -z "${used_map[$port]}" ]]; then
-      echo "$port"
+    if [[ -z "${USED_MAP[$PORT]}" ]]; then
+      echo "$PORT"
       return 0
     fi
   done
@@ -69,7 +69,7 @@ find_free_port() {
   # 多次随机尝试后仍未找到可用端口
   # 通常意味着端口范围过小或已被大量占用
   # ------------------------------------------------------------
-  echo "Error: no free port found after $attempts random attempts." >&2
+  echo "Error: no free port found after $ATTEMPTS random attempts." >&2
   return 1
 }
 
@@ -172,34 +172,34 @@ port_manage() {
 # update_port 8080
 # ==========================================
 update_port(){
-  local port=$1
+  local PORT=$1
   # 如果没有提供端口参数，则自动查找一个随机空闲端口
-  if [[ -z "$port" ]]; then
-    port=$(find_free_port 5000 15000)
+  if [[ -z "$PORT" ]]; then
+    PORT=$(find_free_port 5000 15000)
   fi 
 
-  local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"  # 脚本文件夹绝对路径
-  local config_dir="$script_dir/../config"
-  modify_json_file "$config_dir/config.json" ".inbounds[0].listen_port" "$port"
-  port_manage allow "$port"
+  local SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"  # 脚本文件夹绝对路径
+  local CONFIG_DIR="$SCRIPT_DIR/../config"
+  modify_json_file "$CONFIG_DIR/config.json" ".inbounds[0].listen_port" "$PORT"
+  port_manage allow "$PORT"
   echo "设置端口成功"
 }
 
 # 通过交互方式更新端口
 ask_update_port(){
-    local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-    local config_file="$script_dir/../config/config.json"
+    local SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    local CONFIG_FILE="$SCRIPT_DIR/../config/config.json"
 
-    local current_port=$(get_listen_port)
-    local new_port=$(ask_update "请输入新的端口号" "$current_port")
-    update_port "$new_port"
+    local CURRENT_PORT=$(get_listen_port)
+    local NEW_PORT=$(ask_update "请输入新的端口号" "$CURRENT_PORT")
+    update_port "$NEW_PORT"
 }
 
 # 获取当前配置的监听端口
 get_listen_port(){
-    local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-    local config_file="$script_dir/../config/config.json"
+    local SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    local CONFIG_FILE="$SCRIPT_DIR/../config/config.json"
 
-    local port=$(jq -r ".inbounds[0].listen_port" "$config_file")
-    echo $port
+    local PORT=$(jq -r ".inbounds[0].listen_port" "$CONFIG_FILE")
+    echo $PORT
 }