AP_Scripting: added isdirectory()

libraries/AP_Scripting/docs/docs.lua

@@ -3062,6 +3062,11 @@ function scripting:restart_all() end
 ---@return table -- table of filenames
 function dirlist(directoryname) end
 
+-- return true if path is a directory
+---@param path string
+---@return result
+function isdirectory(path) end
+
 --desc
 ---@param filename string
 function remove(filename) end

libraries/AP_Scripting/generator/description/bindings.desc

@@ -812,6 +812,7 @@ userdata uint32_t manual tofloat uint32_t_tofloat 0
 
 global manual dirlist lua_dirlist 1
 global manual remove lua_removefile 1
+global manual isdirectory lua_isdirectory 1
 global manual print lua_print 1
 
 singleton mavlink depends HAL_GCS_ENABLED

libraries/AP_Scripting/lua_bindings.cpp

@@ -720,6 +720,25 @@ int lua_dirlist(lua_State *L) {
     return 1;  /* table is already on top */
 }
 
+/*
+  return true if path is a directory
+ */
+int lua_isdirectory(lua_State *L) {
+    binding_argcheck(L, 1);
+
+    const char *path = luaL_checkstring(L, 1);
+
+    struct stat st;
+    if (AP::FS().stat(path, &st) != 0) {
+        lua_pushnil(L);  /* return nil and ... */
+        lua_pushstring(L, strerror(errno));  /* error message */
+        return 2;
+    }
+    bool ret = (st.st_mode & S_IFMT) == S_IFDIR;
+    lua_pushboolean(L, ret);
+    return 1;
+}
+
 /*
   remove a file
  */

libraries/AP_Scripting/lua_bindings.h

@@ -12,6 +12,7 @@ int lua_get_CAN_device(lua_State *L);
 int lua_get_CAN_device2(lua_State *L);
 int lua_dirlist(lua_State *L);
 int lua_removefile(lua_State *L);
+int lua_isdirectory(lua_State *L);
 int SRV_Channels_get_safety_state(lua_State *L);
 int lua_get_PWMSource(lua_State *L);
 int lua_get_SocketAPM(lua_State *L);