Add SDL2 sources

SDL2-2.0.12/src/video/SDL_clipboard.c

@@ -0,0 +1,90 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../SDL_internal.h"
+
+#include "SDL_clipboard.h"
+#include "SDL_sysvideo.h"
+
+
+int
+SDL_SetClipboardText(const char *text)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+
+    if (!_this) {
+        return SDL_SetError("Video subsystem must be initialized to set clipboard text");
+    }
+
+    if (!text) {
+        text = "";
+    }
+    if (_this->SetClipboardText) {
+        return _this->SetClipboardText(_this, text);
+    } else {
+        SDL_free(_this->clipboard_text);
+        _this->clipboard_text = SDL_strdup(text);
+        return 0;
+    }
+}
+
+char *
+SDL_GetClipboardText(void)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+
+    if (!_this) {
+        SDL_SetError("Video subsystem must be initialized to get clipboard text");
+        return SDL_strdup("");
+    }
+
+    if (_this->GetClipboardText) {
+        return _this->GetClipboardText(_this);
+    } else {
+        const char *text = _this->clipboard_text;
+        if (!text) {
+            text = "";
+        }
+        return SDL_strdup(text);
+    }
+}
+
+SDL_bool
+SDL_HasClipboardText(void)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+
+    if (!_this) {
+        SDL_SetError("Video subsystem must be initialized to check clipboard text");
+        return SDL_FALSE;
+    }
+
+    if (_this->HasClipboardText) {
+        return _this->HasClipboardText(_this);
+    } else {
+        if (_this->clipboard_text && _this->clipboard_text[0] != '\0') {
+            return SDL_TRUE;
+        } else {
+            return SDL_FALSE;
+        }
+    }
+}
+
+/* vi: set ts=4 sw=4 expandtab: */