[common/client] platform: make filesystem access portable

common/include/common/filesystem.h

@@ -0,0 +1,50 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _H_LG_COMMON_FILESYSTEM_
+#define _H_LG_COMMON_FILESYSTEM_
+
+#include "common/stringlist.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+
+typedef enum LGFileType
+{
+  LG_FILE_TYPE_ERROR,
+  LG_FILE_TYPE_MISSING,
+  LG_FILE_TYPE_REGULAR,
+  LG_FILE_TYPE_DIRECTORY,
+  LG_FILE_TYPE_OTHER,
+}
+LGFileType;
+
+LGFileType lgPathType        (const char * path);
+LGFileType lgPathTypeNoFollow(const char * path);
+bool       lgCreateDirectory (const char * path);
+bool       lgDeleteFile      (const char * path);
+bool       lgDeleteDirectory (const char * path);
+FILE     * lgOpenFile        (const char * path, const char * mode);
+
+/* Returns an owned list of entry names, or NULL when the directory cannot be
+ * opened or read. The special entries "." and ".." are omitted. */
+StringList lgListDirectory   (const char * path);
+
+#endif