From 55b72973676e1f71aca276bdf01fcb4c30794eb4 Mon Sep 17 00:00:00 2001
From: gb <741021719@qq.com>
Date: Thu, 19 Jan 2023 15:44:47 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E8=AF=AD=E8=A8=80=E5=8C=85?=
 =?UTF-8?q?=E6=94=B9=E5=8F=98=E4=BA=8B=E4=BB=B6=E6=B3=A8=E5=86=8C=E5=8F=8A?=
 =?UTF-8?q?=E9=80=9A=E7=9F=A5?=
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---
 app_language.cpp | 68 +++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 65 insertions(+), 3 deletions(-)

diff --git a/app_language.cpp b/app_language.cpp
index c5044ad..fa1c030 100644
--- a/app_language.cpp
+++ b/app_language.cpp
@@ -15,6 +15,7 @@
 #include <map>
 #include <algorithm>
 #include <locale.h>
+#include <thread>
 
 namespace util
 {
@@ -142,7 +143,18 @@ class lang_mgr
 			return std::find(code_pages.begin(), code_pages.end(), cp) != code_pages.end();
 		}
 	}MAPSTR;
+	typedef struct _chg_notify
+	{
+		void(*notify)(int code_page, void* param);
+		void* param;
+		bool operator==(void(*ntfy)(int code_page, void* param))
+		{
+			return notify == ntfy;
+		}
+	}CHGNOTIFY;
+	std::vector<CHGNOTIFY>	notify_;
 
+	volatile bool		in_changing_;
 	std::vector<MAPSTR>	code_pages_;
 	LANATTR		**all_;
 	uint32_t	os_cp_;
@@ -286,6 +298,11 @@ class lang_mgr
 
 		return ret;
 	}
+	void notify_changed(void)
+	{
+		for (auto& v : notify_)
+			v.notify(cur_cp_, v.param);
+	}
 
 #if defined(_WIN32) || defined(_WIN64)
 	static std::string u2a(const wchar_t* u, UINT cp = CP_ACP)
@@ -447,7 +464,7 @@ class lang_mgr
 #endif
 	}
 
-	lang_mgr() : os_cp_(lang_mgr::get_os_code_page()), cur_cp_(-1), cur_lang_(""), all_(nullptr)
+	lang_mgr() : os_cp_(lang_mgr::get_os_code_page()), cur_cp_(-1), cur_lang_(""), all_(nullptr), in_changing_(true)
 	{
 		std::string	path(get_module_path());
 		size_t		pos = path.rfind(PATH_SEPERATOR[0]);
@@ -482,6 +499,7 @@ class lang_mgr
 			str += v.name.length() + 2;
 			st++;
 		}
+		in_changing_ = false;
 	}
 	~lang_mgr()
 	{
@@ -520,7 +538,7 @@ public:
 				if (*locale >= '0' && *locale <= '9')
 					cp = atoi(locale);
 			}
-			end = (char *)";";
+			*end = ';';
 		}
 
 		return cp;
@@ -557,12 +575,30 @@ public:
 		if (it == code_pages_.end())
 			return ENOENT;
 
-		load_language_pak(it->file.c_str(), false);
+		std::string f(it->file);
+
+		in_changing_ = true;
+		std::this_thread::sleep_for(std::chrono::milliseconds(50));
+
+		cp = cur_cp_;
+		load_language_pak(f.c_str(), false);
+		in_changing_ = false;
+
+		if (cp != cur_cp_)
+			notify_changed();
 
 		return 0;
 	}
 	const char* get_string(uint32_t id, int* err)
 	{
+		int cnt = 0;
+		while (in_changing_)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(10));
+			if (cnt++ > 100)
+				return "";
+		}
+
 		if (map_off_[id].size())
 		{
 			if (err)
@@ -582,6 +618,28 @@ public:
 	{
 		return code_pages_.size();
 	}
+	void register_language_changed_notify(void(*lan_changed)(int code_page, void* param), bool reg, void* param = nullptr)
+	{
+		std::vector<CHGNOTIFY>::iterator it = std::find(notify_.begin(), notify_.end(), lan_changed);
+
+		if (it == notify_.end())
+		{
+			if (reg)
+			{
+				CHGNOTIFY	c;
+				c.notify = lan_changed;
+				c.param = param;
+				notify_.push_back(c);
+			}
+		}
+		else
+		{
+			if (reg)
+				it->param = param;
+			else
+				notify_.erase(it);
+		}
+	}
 };
 lang_mgr* lang_mgr::inst_ = nullptr;
 
@@ -610,4 +668,8 @@ extern "C"
 	{
 		return lang_mgr::instance()->get_string(id, err);
 	}
+	void register_language_changed_notify(void(*lan_changed)(int code_page, void* param), bool reg, void* param)
+	{
+		lang_mgr::instance()->register_language_changed_notify(lan_changed, reg, param);
+	}
 }