From ec03b24c71b3f779271e8808a35fab8063a21297 Mon Sep 17 00:00:00 2001
From: Andrew Belt <andrewpbelt@gmail.com>
Date: Sun, 13 Oct 2019 23:54:16 -0400
Subject: [PATCH] Add glfwGetCocoaOpenedFilenames()

---
 include/GLFW/glfw3native.h | 14 ++++++++++++++
 src/cocoa_init.m           | 33 +++++++++++++++++++++++++++++++++
 src/cocoa_platform.h       |  1 +
 3 files changed, 48 insertions(+)

diff --git a/include/GLFW/glfw3native.h b/include/GLFW/glfw3native.h
index e680c1e34..8118e6e72 100644
--- a/include/GLFW/glfw3native.h
+++ b/include/GLFW/glfw3native.h
@@ -215,6 +215,20 @@ GLFWAPI CGDirectDisplayID glfwGetCocoaMonitor(GLFWmonitor* monitor);
  *  @ingroup native
  */
 GLFWAPI id glfwGetCocoaWindow(GLFWwindow* window);
+
+/*! @brief Returns the list of filenames that opened the application,
+ *  such as by dragging files to the app bundle or through file associations.
+ *
+ *  @return A list of strings, null terminated.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.4.
+ *
+ *  @ingroup native
+ */
+const char* const* glfwGetCocoaOpenedFilenames(void);
 #endif
 
 #if defined(GLFW_EXPOSE_NATIVE_NSGL)
diff --git a/src/cocoa_init.m b/src/cocoa_init.m
index 01c1b319e..c698cdd04 100644
--- a/src/cocoa_init.m
+++ b/src/cocoa_init.m
@@ -461,6 +461,20 @@ static GLFWbool initializeTIS(void)
         _glfwRestoreVideoModeNS(_glfw.monitors[i]);
 }
 
+- (void)application:(NSApplication *)sender openFiles:(NSArray<NSString *> *)filenames
+{
+    int len = [filenames count];
+    // Last entry is nil
+    _glfw.ns.openedFilenames = calloc(len + 1, sizeof(char*));
+
+    for (int i = 0; i < len; i++)
+    {
+        NSString* filename = [filenames objectAtIndex:i];
+        const char* filenameStr = [filename UTF8String];
+        _glfw.ns.openedFilenames[i] = _glfw_strdup(filenameStr);
+    }
+}
+
 @end // GLFWApplicationDelegate
 
 
@@ -577,6 +591,16 @@ void _glfwPlatformTerminate(void)
     if (_glfw.ns.keyUpMonitor)
         [NSEvent removeMonitor:_glfw.ns.keyUpMonitor];
 
+    if (_glfw.ns.openedFilenames)
+    {
+        for (char** p = _glfw.ns.openedFilenames; *p; p++)
+        {
+            free(*p);
+        }
+        free(_glfw.ns.openedFilenames);
+        _glfw.ns.openedFilenames = nil;
+    }
+
     free(_glfw.ns.clipboardString);
 
     _glfwTerminateNSGL();
@@ -594,3 +618,12 @@ const char* _glfwPlatformGetVersionString(void)
         ;
 }
 
+
+//////////////////////////////////////////////////////////////////////////
+//////                        GLFW native API                       //////
+//////////////////////////////////////////////////////////////////////////
+
+const char* const* glfwGetCocoaOpenedFilenames(void)
+{
+    return _glfw.ns.openedFilenames;
+}
diff --git a/src/cocoa_platform.h b/src/cocoa_platform.h
index f8bfe3e65..932303920 100644
--- a/src/cocoa_platform.h
+++ b/src/cocoa_platform.h
@@ -148,6 +148,7 @@ typedef struct _GLFWlibraryNS
     double              restoreCursorPosX, restoreCursorPosY;
     // The window whose disabled cursor mode is active
     _GLFWwindow*        disabledCursorWindow;
+    char**              openedFilenames;
 
     struct {
         CFBundleRef     bundle;