From bc4aea67c9c7a9be23ecce7b6e71e21b7bb4b258 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Tue, 24 Dec 2024 08:08:44 +0300
Subject: [PATCH] add file.is_writeable

---
 dev/tests/filesystem.lua                 |  6 ++++++
 doc/en/scripting/builtins/libfile.md     |  6 ++++++
 doc/ru/scripting/builtins/libfile.md     |  6 ++++++
 src/logic/scripting/lua/libs/libfile.cpp | 11 +++++++++++
 4 files changed, 29 insertions(+)

diff --git a/dev/tests/filesystem.lua b/dev/tests/filesystem.lua
index ac3e5e30..a9ff58ce 100644
--- a/dev/tests/filesystem.lua
+++ b/dev/tests/filesystem.lua
@@ -42,3 +42,9 @@ end
 debug.log("delete file")
 file.remove("config:binary")
 assert(not file.exists("config:binary"))
+
+debug.log("checking entry points for writeability")
+assert(file.is_writeable("config:"))
+assert(file.is_writeable("export:"))
+assert(not file.is_writeable("user:"))
+assert(not file.is_writeable("res:"))
diff --git a/doc/en/scripting/builtins/libfile.md b/doc/en/scripting/builtins/libfile.md
index fe02bed1..1e683b65 100644
--- a/doc/en/scripting/builtins/libfile.md
+++ b/doc/en/scripting/builtins/libfile.md
@@ -25,6 +25,12 @@ file.read_bytes(path: str) -> array of integers
 
 Read file into bytes array.
 
+```lua
+file.is_writeable(path: str) -> bool
+```
+
+Checks if the specified path is writable.
+
 ```python
 file.write(path: str, text: str) -> nil
 ```
diff --git a/doc/ru/scripting/builtins/libfile.md b/doc/ru/scripting/builtins/libfile.md
index a9a9c273..d7ed7792 100644
--- a/doc/ru/scripting/builtins/libfile.md
+++ b/doc/ru/scripting/builtins/libfile.md
@@ -25,6 +25,12 @@ file.read_bytes(путь: str) -> array of integers
 
 Читает файл в массив байт.
 
+```lua
+file.is_writeable(путь: str) -> bool
+```
+
+Проверяет, доступно ли право записи по указанному пути.
+
 ```python
 file.write(путь: str, текст: str) -> nil
 ```
diff --git a/src/logic/scripting/lua/libs/libfile.cpp b/src/logic/scripting/lua/libs/libfile.cpp
index 940aaa53..6e9cac5c 100644
--- a/src/logic/scripting/lua/libs/libfile.cpp
+++ b/src/logic/scripting/lua/libs/libfile.cpp
@@ -243,6 +243,16 @@ static int l_read_combined_object(lua::State* L) {
     return lua::pushvalue(L, engine->getResPaths()->readCombinedObject(path));
 }
 
+static int l_is_writeable(lua::State* L) {
+    std::string rawpath = lua::require_string(L, 1);
+    fs::path path = resolve_path(rawpath);
+    auto entryPoint = rawpath.substr(0, rawpath.find(':'));
+    if (writeable_entry_points.find(entryPoint) == writeable_entry_points.end()) {
+        return lua::pushboolean(L, false);
+    }
+    return lua::pushboolean(L, true);
+}
+
 const luaL_Reg filelib[] = {
     {"exists", lua::wrap<l_exists>},
     {"find", lua::wrap<l_find>},
@@ -263,4 +273,5 @@ const luaL_Reg filelib[] = {
     {"gzip_decompress", lua::wrap<l_gzip_decompress>},
     {"read_combined_list", lua::wrap<l_read_combined_list>},
     {"read_combined_object", lua::wrap<l_read_combined_object>},
+    {"is_writeable", lua::wrap<l_is_writeable>},
     {NULL, NULL}};