libretro, add Pico pad overlay and storyware pages handling

platform/libretro/libretro-common/file/file_path_io.c

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+/* Copyright  (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_path_io.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <sys/stat.h>
+
+#include <boolean.h>
+#include <file/file_path.h>
+#include <compat/strl.h>
+#include <compat/posix_string.h>
+#include <retro_miscellaneous.h>
+#include <string/stdstring.h>
+#define VFS_FRONTEND
+#include <vfs/vfs_implementation.h>
+
+#ifdef _WIN32
+#include <direct.h>
+#else
+#include <unistd.h> /* stat() is defined here */
+#endif
+
+/* TODO/FIXME - globals */
+static retro_vfs_stat_t path_stat_cb   = retro_vfs_stat_impl;
+static retro_vfs_mkdir_t path_mkdir_cb = retro_vfs_mkdir_impl;
+
+void path_vfs_init(const struct retro_vfs_interface_info* vfs_info)
+{
+   const struct retro_vfs_interface* 
+      vfs_iface           = vfs_info->iface;
+
+   path_stat_cb           = retro_vfs_stat_impl;
+   path_mkdir_cb          = retro_vfs_mkdir_impl;
+
+   if (vfs_info->required_interface_version < PATH_REQUIRED_VFS_VERSION || !vfs_iface)
+      return;
+
+   path_stat_cb           = vfs_iface->stat;
+   path_mkdir_cb          = vfs_iface->mkdir;
+}
+
+int path_stat(const char *path)
+{
+   return path_stat_cb(path, NULL);
+}
+
+/**
+ * path_is_directory:
+ * @path               : path
+ *
+ * Checks if path is a directory.
+ *
+ * @return true if path is a directory, otherwise false.
+ */
+bool path_is_directory(const char *path)
+{
+   return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_DIRECTORY) != 0;
+}
+
+bool path_is_character_special(const char *path)
+{
+   return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_CHARACTER_SPECIAL) != 0;
+}
+
+bool path_is_valid(const char *path)
+{
+   return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_VALID) != 0;
+}
+
+int32_t path_get_size(const char *path)
+{
+   int32_t filesize = 0;
+   if (path_stat_cb(path, &filesize) != 0)
+      return filesize;
+
+   return -1;
+}
+
+/**
+ * path_mkdir:
+ * @dir                : directory
+ *
+ * Create directory on filesystem.
+ * 
+ * Recursive function.
+ *
+ * @return true if directory could be created, otherwise false.
+ **/
+bool path_mkdir(const char *dir)
+{
+   bool norecurse     = false;
+   char     *basedir  = NULL;
+
+   if (!(dir && *dir))
+      return false;
+
+   /* Use heap. Real chance of stack 
+    * overflow if we recurse too hard. */
+   if (!(basedir = strdup(dir)))
+      return false;
+
+   path_parent_dir(basedir, strlen(basedir));
+
+   if (!*basedir || !strcmp(basedir, dir))
+   {
+      free(basedir);
+      return false;
+   }
+
+   if (     path_is_directory(basedir)
+         || path_mkdir(basedir))
+      norecurse = true;
+
+   free(basedir);
+
+   if (norecurse)
+   {
+      int ret = path_mkdir_cb(dir);
+
+      /* Don't treat this as an error. */
+      if (ret == -2 && path_is_directory(dir))
+         return true;
+      else if (ret == 0)
+         return true;
+   }
+   return false;
+}