From a7ef4ee63a7740e95984bd2cd89e310f5790c525 Mon Sep 17 00:00:00 2001
From: TheWhiteDog9487 <thewhitedog9487@outlook.com>
Date: Mon, 25 May 2026 15:08:58 +0800
Subject: [PATCH] =?UTF-8?q?-=20Debian=E5=86=99=E5=85=A5=E5=89=8D=E6=A3=80?=
 =?UTF-8?q?=E6=9F=A5=E6=98=AF=E5=90=A6=E5=AD=98=E5=9C=A8=E5=A4=84=E4=BA=8E?=
 =?UTF-8?q?=E6=BF=80=E6=B4=BB=E7=8A=B6=E6=80=81=E7=9A=84=E7=AE=80=E4=BD=93?=
 =?UTF-8?q?=E4=B8=AD=E6=96=87locale=EF=BC=8C=E5=A6=82=E6=9E=9C=E5=AD=98?=
 =?UTF-8?q?=E5=9C=A8=E5=88=99=E8=B7=B3=E8=BF=87=E5=86=99=E5=85=A5=20-=20?=
 =?UTF-8?q?=E5=A6=82=E6=9E=9C=E6=96=87=E4=BB=B6=E6=89=93=E5=BC=80=E5=A4=B1?=
 =?UTF-8?q?=E8=B4=A5=EF=BC=8C=E6=8A=9B=E5=87=BA=E5=BC=82=E5=B8=B8?=
MIME-Version: 1.0
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---
 language.cpp | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/language.cpp b/language.cpp
index 60a25a4..815cba9 100644
--- a/language.cpp
+++ b/language.cpp
@@ -4,6 +4,7 @@
 #include <fstream>
 #include <filesystem>
 #include <ciso646>
+#include <vector>
 
 #ifdef __linux__
     #include <unistd.h>
@@ -50,10 +51,8 @@ auto GetCurrentSystemType(){
 
     #ifdef __linux__
         return System::Linux;
-    #else
-        return System::Unsupported;
     #endif
-}
+    return System::Unsupported; }
 
 auto GetCurrentWslDistro(){
     #pragma warning(suppress : 4996)
@@ -128,9 +127,21 @@ auto Debian(){
     cout << "即将开始更新语言配置，请输入y或者yes继续，或者按Ctrl+C终止本程序";
     check();
     cout << "开始更新语言配置" << endl;
-    fstream locale_gen("/etc/locale.gen", ios::app);
+    fstream locale_gen("/etc/locale.gen");
+    if (locale_gen.is_open() == false){
+        throw system_error(errno, system_category(), "未能正确打开/etc/locale.gen"); }
+    vector<string> FileContent;
+    string Buffer = "";
+    while (getline(locale_gen, Buffer)){
+        FileContent.push_back(Buffer); }
+    for (auto& Line : FileContent){
+        if (Line == "zh_CN.UTF-8 UTF-8"){
+            goto skip_write; } }
+    locale_gen.clear();
+    locale_gen.seekp(0, ios::end);
     locale_gen << '\n' <<
         "zh_CN.UTF-8 UTF-8" << endl;
+skip_write:
     locale_gen.close();
     system("locale-gen");
     system("update-locale LANG=zh_CN.UTF-8");
@@ -138,7 +149,7 @@ auto Debian(){
     cout << "输入y或者yes重启或者按Ctrl+C终止本程序" << endl;
     check();
     RebootIfIsWSL();
-    system("reboot");}
+    system("reboot"); }
 
 auto OsType = GetCurrentSystemType();