add gradMehExportRunning scripting command (#49)

README.md

@@ -38,7 +38,7 @@ We export the following from Arma 3 maps:
 All exported files can be found in the `grad_meh` subdirectory of your Arma 3 installation directory. Each map has its own subdirectory, which structure is further explained [here](./docs/output_spec.md).
 
 ## Scripting API
-Gruppe Adler Map Exporter adds a script command, which is used by the UI. If you want to, you could leverage that scripting command for your own purposes.
+Gruppe Adler Map Exporter adds two script commands, which are used by the UI. If you want to, you could leverage that scripting command for your own purposes.
 
 ### `gradMehExportMap`
 |**Syntax**| |  
@@ -59,6 +59,17 @@ Gruppe Adler Map Exporter adds a script command, which is used by the UI. If you
 |||
 |Examples|`gradMehExportMap ["Stratis", true, true, true, true, true];`|  
 
+### `gradMehExportRunning`
+|**Syntax**| |  
+|---|---|  
+|Description| Check if an export is currently running. |
+|||
+|Syntax| **gradMehExportRunning**
+|||
+|Return Value| [Boolean](https://community.bistudio.com/wiki/Boolean) - `true` is export is currently running, `false` if none is running
+|||
+|Examples|`private _running = gradMehExportRunning;`|  
+
 ## FAQ
 
 ### How long does an export take?

src/main.cpp

@@ -299,6 +299,10 @@ void extractMap(const std::string &worldName, const std::string &worldPath, std:
     return;
 }
 
+game_value exportRunningCommand(game_state &gs) {
+    return gradMehIsRunning;
+}
+
 game_value exportMapCommand(game_state &gs, SQFPar rightArg)
 {
 
@@ -413,6 +417,8 @@ void intercept::pre_start()
         client::host::register_sqf_command("gradMehExportMap", "Exports the given map", exportMapCommand, game_data_type::SCALAR, game_data_type::STRING);
     static auto grad_meh_export_map_array =
         client::host::register_sqf_command("gradMehExportMap", "Exports the given map", exportMapCommand, game_data_type::SCALAR, game_data_type::ARRAY);
+    static auto grad_meh_export_running =
+        client::host::register_sqf_command("gradMehExportRunning", "Check if an export is currently running", exportRunningCommand, game_data_type::BOOL);
 
 #if WIN32
     std::filesystem::path a3_log_path;