file_path.h

/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
 * 
 *  RetroArch 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 Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch 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 RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __RARCH_FILE_PATH_H
#define __RARCH_FILE_PATH_H

#include "boolean.h"
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif

/* Order in this enum is equivalent to negative sort order in filelist
 *  (i.e. DIRECTORY is on top of PLAIN_FILE) */
enum
{
   RARCH_FILETYPE_UNSET,
   RARCH_PLAIN_FILE,
   RARCH_COMPRESSED_FILE_IN_ARCHIVE,
   RARCH_COMPRESSED_ARCHIVE,
   RARCH_DIRECTORY,
   RARCH_FILE_UNSUPPORTED,
};


#ifdef HAVE_COMPRESSION
long read_compressed_file(const char * path, void **buf);
#endif

long read_file(const char *path, void **buf);
bool read_file_string(const char *path, char **buf);
bool write_file(const char *path, const void *buf, size_t size);

union string_list_elem_attr
{
   bool  b;
   int   i;
   void *p;
};

struct string_list_elem
{
   char *data;
   union string_list_elem_attr attr;
};

struct string_list
{
   struct string_list_elem *elems;
   size_t size;
   size_t cap;
};

struct string_list *compressed_file_list_new(const char *filename,
      const char* ext);
struct string_list *dir_list_new(const char *dir, const char *ext,
      bool include_dirs);
void dir_list_sort(struct string_list *list, bool dir_first);
void dir_list_free(struct string_list *list);
bool string_list_find_elem(const struct string_list *list, const char *elem);
bool string_list_find_elem_prefix(const struct string_list *list,
      const char *prefix, const char *elem);
struct string_list *string_split(const char *str, const char *delim);
struct string_list *string_list_new(void);
bool string_list_append(struct string_list *list, const char *elem,
      union string_list_elem_attr attr);
void string_list_free(struct string_list *list);
void string_list_join_concat(char *buffer, size_t size,
      const struct string_list *list, const char *sep);
void string_list_set(struct string_list *list, unsigned index,
      const char *str);

/* path_is_compressed_file also means: The compressed file is supported */
bool path_is_compressed_file(const char *path);

/* Somewhere in the path there might be a compressed file
 * E.g.: /path/to/file.7z#mygame.img
 */
bool path_contains_compressed_file(const char *path);
bool path_is_directory(const char *path);
bool path_file_exists(const char *path);

/* Gets extension of file. Only '.'s after the last slash are considered. */
const char *path_get_extension(const char *path);

bool path_mkdir(const char *dir);

/* Removes all text after and including the last '.'.
 * Only '.'s after the last slash are considered. */
char *path_remove_extension(char *path);

/* Returns basename from path. */
const char *path_basename(const char *path);

/* Extracts base directory by mutating path.
 * Keeps trailing '/'. */
void path_basedir(char *path);

/* Extracts parent directory by mutating path.
 * Assumes that path is a directory. Keeps trailing '/'. */
void path_parent_dir(char *path);

/* Turns relative paths into absolute path.
 * If relative, rebases on current working dir. */
void path_resolve_realpath(char *buf, size_t size);

bool path_is_absolute(const char *path);

/* Path-name operations.
 * If any of these operation are detected to overflow, the application will 
 * be terminated.
 *
 * Replaces filename extension with 'replace' and outputs result to out_path.
 * The extension here is considered to be the string from the last '.'
 * to the end.
 *
 * Only '.'s after the last slash are considered as extensions.
 * If no '.' is present, in_path and replace will simply be concatenated.
 * 'size' is buffer size of 'out_path'.
 * E.g.: in_path = "/foo/bar/baz/boo.c", replace = ".asm" => 
 * out_path = "/foo/bar/baz/boo.asm" 
 * E.g.: in_path = "/foo/bar/baz/boo.c", replace = ""     =>
 * out_path = "/foo/bar/baz/boo" 
 */
void fill_pathname(char *out_path, const char *in_path,
      const char *replace, size_t size);

void fill_dated_filename(char *out_filename,
      const char *ext, size_t size);

/* Appends a filename extension 'replace' to 'in_path', and outputs
 * result in 'out_path'.
 *
 * Assumes in_path has no extension. If an extension is still
 * present in 'in_path', it will be ignored.
 *
 * 'size' is buffer size of 'out_path'. */
void fill_pathname_noext(char *out_path, const char *in_path,
      const char *replace, size_t size);

/* Appends basename of 'in_basename', to 'in_dir', along with 'replace'.
 * Basename of in_basename is the string after the last '/' or '\\',
 * i.e the filename without directories.
 *
 * If in_basename has no '/' or '\\', the whole 'in_basename' will be used.
 * 'size' is buffer size of 'in_dir'.
 *
 * E.g..: in_dir = "/tmp/some_dir", in_basename = "/some_content/foo.c",
 * replace = ".asm" => in_dir = "/tmp/some_dir/foo.c.asm"
 *
 * */
void fill_pathname_dir(char *in_dir, const char *in_basename,
      const char *replace, size_t size);

/* Copies basename of in_path into out_path. */
void fill_pathname_base(char *out_path, const char *in_path, size_t size);

/* Copies base directory of in_path into out_path.
 * If in_path is a path without any slashes (relative current directory),
 * out_path will get path "./". */
void fill_pathname_basedir(char *out_path, const char *in_path, size_t size);

/* Copies parent directory of in_dir into out_dir.
 * Assumes in_dir is a directory. Keeps trailing '/'. */
void fill_pathname_parent_dir(char *out_dir,
      const char *in_dir, size_t size);

/* Joins basedir of in_refpath together with in_path.
 * If in_path is an absolute path, out_path = in_path.
 * E.g.: in_refpath = "/foo/bar/baz.a", in_path = "foobar.cg",
 * out_path = "/foo/bar/foobar.cg". */
void fill_pathname_resolve_relative(char *out_path, const char *in_refpath,
      const char *in_path, size_t size);

/* Joins a directory and path together. Makes sure not to get 
 * two consecutive slashes between dir and path. */
void fill_pathname_join(char *out_path, const char *dir,
      const char *path, size_t size);

/* Joins a directory and path together using the given char. */
void fill_pathname_join_delim(char *out_path, const char *dir,
      const char *path, const char delim, size_t size);

/* Generates a short representation of path. It should only
 * be used for displaying the result; the output representation is not
 * binding in any meaningful way (for a normal path, this is the same as basename)
 * In case of more complex URLs, this should cut everything except for
 * the main image file.
 * E.g.: "/path/to/game.img" -> game.img
 *       "/path/to/myarchive.7z#folder/to/game.img" -> game.img
 */
void fill_short_pathname_representation(char* out_rep,
      const char *in_path, size_t size);

void fill_pathname_expand_special(char *out_path,
      const char *in_path, size_t size);
void fill_pathname_abbreviate_special(char *out_path,
      const char *in_path, size_t size);
void fill_pathname_slash(char *path, size_t size);

#ifndef RARCH_CONSOLE
void fill_pathname_application_path(char *buf, size_t size);
#endif

#ifdef __cplusplus
}
#endif

#endif