From 410b1816ada7b6d6cbcd34c03767689e0164d304 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 9 Sep 2022 07:39:38 +0530
Subject: [PATCH] More work on cocoa clipboard backend

---
 glfw/cocoa_window.m | 77 +++++++++++++++++++++++++++++++++++++++++++--
 glfw/x11_window.c   |  4 +--
 2 files changed, 77 insertions(+), 4 deletions(-)

diff --git a/glfw/cocoa_window.m b/glfw/cocoa_window.m
index 5f386fe09..c43226bd5 100644
--- a/glfw/cocoa_window.m
+++ b/glfw/cocoa_window.m
@@ -2538,18 +2538,91 @@ list_clipboard_mimetypes(GLFWclipboardwritedatafun write_data, void *object) {
 #undef w
 }
 
+static void
+get_text_plain(GLFWclipboardwritedatafun write_data, void *object) {
+    NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
+    NSDictionary* options = @{NSPasteboardURLReadingFileURLsOnlyKey:@YES};
+    NSArray* objs = [pasteboard readObjectsForClasses:@[[NSURL class], [NSString class]] options:options];
+    bool found = false;
+    if (objs) {
+        const NSUInteger count = [objs count];
+        if (count) {
+            NSMutableString *path_list = [NSMutableString stringWithCapacity:4096];  // auto-released
+            NSMutableString *text_list = [NSMutableString stringWithCapacity:4096];  // auto-released
+            for (NSUInteger i = 0;  i < count;  i++) {
+                id obj = objs[i];
+                if ([obj isKindOfClass:[NSURL class]]) {
+                    NSURL *url = (NSURL*)obj;
+                    if (url.fileURL && url.fileSystemRepresentation) {
+                        if ([path_list length] > 0) [path_list appendString:@("\n")];
+                        [path_list appendString:@(url.fileSystemRepresentation)];
+                    }
+                } else if ([obj isKindOfClass:[NSString class]]) {
+                    if ([text_list length] > 0) [text_list appendString:@("\n")];
+                    [text_list appendString:obj];
+                }
+            }
+            const char *text = NULL;
+            if (path_list.length > 0) text = [path_list UTF8String];
+            else if (text_list.length > 0) text = [text_list UTF8String];
+            if (text) {
+                found = true;
+                write_data(object, text, strlen(text));
+            }
+        }
+    }
+    if (!found) _glfwInputError(GLFW_PLATFORM_ERROR, "Cocoa: Failed to retrieve text/plain from pasteboard");
+}
+
 void
 _glfwPlatformGetClipboard(GLFWClipboardType clipboard_type, const char* mime_type, GLFWclipboardwritedatafun write_data, void *object) {
     if (clipboard_type != GLFW_CLIPBOARD) return;
-    (void)mime_type; (void) write_data; (void) object;
     if (mime_type == NULL) {
         list_clipboard_mimetypes(write_data, object);
         return;
     }
+    if (strcmp(mime_type, "text/plain") == 0) {
+        get_text_plain(write_data, object);
+        return;
+    }
 }
 
-void _glfwPlatformSetClipboard(GLFWClipboardType t) {
+static NSMutableData*
+get_clipboard_data(const _GLFWClipboardData *cd, const char *mime) {
+    NSMutableData *ans = [NSMutableData dataWithCapacity:8192];
+    if (ans == nil) return nil;
+    GLFWDataChunk chunk = cd->get_data(mime, NULL, cd->ctype);
+    void *iter = chunk.iter;
+    if (!iter) return ans;
+    while (true) {
+        chunk = cd->get_data(mime, iter, cd->ctype);
+        if (!chunk.sz) break;
+        [ans appendBytes:chunk.data length:chunk.sz];
+        if (chunk.free) chunk.free((void*)chunk.free_data);
+    }
+    cd->get_data(NULL, iter, cd->ctype);
+    return ans;
+}
+
+
+void
+_glfwPlatformSetClipboard(GLFWClipboardType t) {
     if (t != GLFW_CLIPBOARD) return;
+    NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
+    if (@available(macOS 11.0, *)) {
+    } else {
+        for (size_t i = 0; i < _glfw.clipboard.num_mime_types; i++) {
+            const char *mime = _glfw.clipboard.mime_types[i];
+            if (strcmp(mime, "text/plain") == 0) {
+                NSMutableData *data = get_clipboard_data(&_glfw.clipboard, mime);  // auto-released
+                if (data != nil) {
+                    [pasteboard declareTypes:@[NSPasteboardTypeString] owner:nil];
+                    [pasteboard setData:data forType:NSPasteboardTypeString];
+                }
+            }
+        }
+        return;
+    }
 }
 // }}}
 
diff --git a/glfw/x11_window.c b/glfw/x11_window.c
index 4e9989e5e..b59455775 100644
--- a/glfw/x11_window.c
+++ b/glfw/x11_window.c
@@ -822,7 +822,7 @@ static Atom writeTargetToProperty(const XSelectionRequestEvent* request)
             {
                 char *data = NULL; size_t sz = get_clipboard_data(cd, aa->array[j].mime, &data);
 
-                if (data && sz) XChangeProperty(_glfw.x11.display,
+                if (data) XChangeProperty(_glfw.x11.display,
                                 request->requestor,
                                 targets[i + 1],
                                 targets[i],
@@ -876,7 +876,7 @@ static Atom writeTargetToProperty(const XSelectionRequestEvent* request)
             // The requested target is one we support
 
             char *data = NULL; size_t sz = get_clipboard_data(cd, aa->array[i].mime, &data);
-            if (data && sz) XChangeProperty(_glfw.x11.display,
+            if (data) XChangeProperty(_glfw.x11.display,
                             request->requestor,
                             request->property,
                             request->target,