winemac: Add a simple ERR() logging macro that can be used from Cocoa code.

dlls/winemac.drv/cocoa_app.h

@@ -23,6 +23,9 @@
 #include "macdrv_cocoa.h"
 
 
+#define ERR(...) do { if (macdrv_err_on) LogError(__func__, __VA_ARGS__); } while (false)
+
+
 @interface WineApplication : NSApplication <NSApplicationDelegate>
 
     - (void) transformProcessToForeground;
@@ -31,3 +34,6 @@
 
 void OnMainThread(dispatch_block_t block);
 void OnMainThreadAsync(dispatch_block_t block);
+
+void LogError(const char* func, NSString* format, ...);
+void LogErrorv(const char* func, NSString* format, va_list args);

dlls/winemac.drv/cocoa_app.m

@@ -21,6 +21,9 @@
 #import "cocoa_app.h"
 
 
+int macdrv_err_on;
+
+
 @implementation WineApplication
 
     - (void) transformProcessToForeground
@@ -87,3 +90,24 @@ void OnMainThreadAsync(dispatch_block_t block)
 {
     dispatch_async(dispatch_get_main_queue(), block);
 }
+
+/***********************************************************************
+ *              LogError
+ */
+void LogError(const char* func, NSString* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    LogErrorv(func, format, args);
+    va_end(args);
+}
+
+/***********************************************************************
+ *              LogErrorv
+ */
+void LogErrorv(const char* func, NSString* format, va_list args)
+{
+    NSString* message = [[NSString alloc] initWithFormat:format arguments:args];
+    fprintf(stderr, "err:%s:%s", func, [message UTF8String]);
+    [message release];
+}

dlls/winemac.drv/macdrv_cocoa.h

@@ -109,6 +109,8 @@ struct macdrv_display {
 
 
 /* main */
+extern int macdrv_err_on;
+
 extern int macdrv_start_cocoa_app(void) DECLSPEC_HIDDEN;
 
 

dlls/winemac.drv/macdrv_main.c

@@ -36,6 +36,7 @@ BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
     switch(reason)
     {
     case DLL_PROCESS_ATTACH:
+        macdrv_err_on = ERR_ON(macdrv);
         if (macdrv_start_cocoa_app())
         {
             ERR("Failed to start Cocoa app main loop\n");