RetroArch/dir_list.c

266 lines
7.2 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2014 - Daniel De Matteis
*
* 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/>.
*/
#include "dir_list.h"
#include "file_path.h"
#include "compat/strl.h"
#include "miscellaneous.h"
#if defined(_WIN32)
#ifdef _MSC_VER
#define setmode _setmode
#endif
#include "msvc/msvc_compat.h"
#ifdef _XBOX
#include <xtl.h>
#define INVALID_FILE_ATTRIBUTES -1
#else
#include <io.h>
#include <fcntl.h>
#include <direct.h>
#include <windows.h>
#endif
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#endif
static int qstrcmp_plain(const void *a_, const void *b_)
{
const struct string_list_elem *a = (const struct string_list_elem*)a_;
const struct string_list_elem *b = (const struct string_list_elem*)b_;
return strcasecmp(a->data, b->data);
}
static int qstrcmp_dir(const void *a_, const void *b_)
{
const struct string_list_elem *a = (const struct string_list_elem*)a_;
const struct string_list_elem *b = (const struct string_list_elem*)b_;
int a_type = a->attr.i;
int b_type = b->attr.i;
/* Sort directories before files. */
if (a_type != b_type)
return b_type - a_type;
return strcasecmp(a->data, b->data);
}
void dir_list_sort(struct string_list *list, bool dir_first)
{
if (!list)
return;
qsort(list->elems, list->size, sizeof(struct string_list_elem),
dir_first ? qstrcmp_dir : qstrcmp_plain);
}
void dir_list_free(struct string_list *list)
{
string_list_free(list);
}
#ifdef _WIN32
struct string_list *dir_list_new(const char *dir,
const char *ext, bool include_dirs)
{
struct string_list *list = string_list_new();
if (!list)
return NULL;
HANDLE hFind = INVALID_HANDLE_VALUE;
WIN32_FIND_DATA ffd;
char path_buf[PATH_MAX];
snprintf(path_buf, sizeof(path_buf), "%s\\*", dir);
struct string_list *ext_list = NULL;
if (ext)
ext_list = string_split(ext, "|");
hFind = FindFirstFile(path_buf, &ffd);
if (hFind == INVALID_HANDLE_VALUE)
goto error;
do
{
union string_list_elem_attr attr;
char file_path[PATH_MAX];
const char *name = ffd.cFileName;
const char *file_ext = path_get_extension(name);
bool is_dir = ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
bool is_compressed_file = false;
bool supported_by_core = false;
attr.i = RARCH_FILETYPE_UNSET;
fill_pathname_join(file_path, dir, name, sizeof(file_path));
if (!is_dir)
{
is_compressed_file = path_is_compressed_file(file_path);
if (string_list_find_elem_prefix(ext_list, ".", file_ext))
supported_by_core = true;
}
if (!include_dirs && is_dir)
continue;
if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
continue;
if (!is_compressed_file && !is_dir && ext_list && !supported_by_core)
continue;
if (is_dir)
attr.i = RARCH_DIRECTORY;
if (is_compressed_file)
attr.i = RARCH_COMPRESSED_ARCHIVE;
/* The order of these ifs is important.
* If the file format is explicitly supported by the libretro-core, we
* need to immediately load it and not designate it as a compressed file.
*
* Example: .zip could be supported as a image by the core and as a
* compressed_file. In that case, we have to interpret it as a image.
*
* */
if (supported_by_core)
attr.i = RARCH_PLAIN_FILE;
if (!string_list_append(list, file_path, attr))
goto error;
}
while (FindNextFile(hFind, &ffd) != 0);
FindClose(hFind);
string_list_free(ext_list);
return list;
error:
RARCH_ERR("Failed to open directory: \"%s\"\n", dir);
if (hFind != INVALID_HANDLE_VALUE)
FindClose(hFind);
string_list_free(list);
string_list_free(ext_list);
return NULL;
}
#else
static bool dirent_is_directory(const char *path,
const struct dirent *entry)
{
#if defined(PSP)
return (entry->d_stat.st_attr & FIO_SO_IFDIR) == FIO_SO_IFDIR;
#elif defined(DT_DIR)
if (entry->d_type == DT_DIR)
return true;
else if (entry->d_type == DT_UNKNOWN /* This can happen on certain file systems. */
|| entry->d_type == DT_LNK)
return path_is_directory(path);
return false;
#else /* dirent struct doesn't have d_type, do it the slow way ... */
return path_is_directory(path);
#endif
}
struct string_list *dir_list_new(const char *dir,
const char *ext, bool include_dirs)
{
DIR *directory = NULL;
const struct dirent *entry = NULL;
struct string_list *ext_list = NULL;
struct string_list *list = (struct string_list*)string_list_new();
if (!list)
return NULL;
if (ext)
ext_list = string_split(ext, "|");
directory = opendir(dir);
if (!directory)
goto error;
while ((entry = readdir(directory)))
{
bool is_dir;
char file_path[PATH_MAX];
union string_list_elem_attr attr;
const char *name = entry->d_name;
const char *file_ext = path_get_extension(name);
bool is_compressed_file = false;
bool supported_by_core = false;
attr.i = RARCH_FILETYPE_UNSET;
fill_pathname_join(file_path, dir, name, sizeof(file_path));
is_dir = dirent_is_directory(file_path, entry);
if (!is_dir)
{
is_compressed_file = path_is_compressed_file(file_path);
if (string_list_find_elem_prefix(ext_list, ".", file_ext))
supported_by_core = true;
}
if (!include_dirs && is_dir)
continue;
if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
continue;
if (!is_dir && ext_list && !is_compressed_file && !supported_by_core)
continue;
if (is_dir)
attr.i = RARCH_DIRECTORY;
if (is_compressed_file)
attr.i = RARCH_COMPRESSED_ARCHIVE;
/* The order of these ifs is important.
* If the file format is explicitly supported by the libretro-core, we
* need to immediately load it and not designate it as a compressed file.
*
* Example: .zip could be supported as a image by the core and as a
* compressed_file. In that case, we have to interpret it as a image.
*
* */
if (supported_by_core)
attr.i = RARCH_PLAIN_FILE;
if (!string_list_append(list, file_path, attr))
goto error;
}
closedir(directory);
string_list_free(ext_list);
return list;
error:
RARCH_ERR("Failed to open directory: \"%s\"\n", dir);
if (directory)
closedir(directory);
string_list_free(list);
string_list_free(ext_list);
return NULL;
}
#endif