initial commit, 4.5 stable

thirdparty/sdl/core/unix/SDL_appid.c

@@ -0,0 +1,75 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 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_appid.h"
+#include <unistd.h>
+
+const char *SDL_GetExeName(void)
+{
+    static const char *proc_name = NULL;
+
+    // TODO: Use a fallback if BSD has no mounted procfs (OpenBSD has no procfs at all)
+    if (!proc_name) {
+#if defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_FREEBSD) || defined (SDL_PLATFORM_NETBSD)
+        static char linkfile[1024];
+        int linksize;
+
+#if defined(SDL_PLATFORM_LINUX)
+        const char *proc_path = "/proc/self/exe";
+#elif defined(SDL_PLATFORM_FREEBSD)
+        const char *proc_path = "/proc/curproc/file";
+#elif defined(SDL_PLATFORM_NETBSD)
+        const char *proc_path = "/proc/curproc/exe";
+#endif
+        linksize = readlink(proc_path, linkfile, sizeof(linkfile) - 1);
+        if (linksize > 0) {
+            linkfile[linksize] = '\0';
+            proc_name = SDL_strrchr(linkfile, '/');
+            if (proc_name) {
+                ++proc_name;
+            } else {
+                proc_name = linkfile;
+            }
+        }
+#endif
+    }
+
+    return proc_name;
+}
+
+const char *SDL_GetAppID(void)
+{
+    const char *id_str = SDL_GetAppMetadataProperty(SDL_PROP_APP_METADATA_IDENTIFIER_STRING);
+
+    if (!id_str) {
+        // If the hint isn't set, try to use the application's executable name
+        id_str = SDL_GetExeName();
+    }
+
+    if (!id_str) {
+        // Finally, use the default we've used forever
+        id_str = "SDL_App";
+    }
+
+    return id_str;
+}