RetroArch/libretro-common/file/retro_dirent.c
2017-10-16 01:51:59 +02:00

280 lines
7.6 KiB
C

/* Copyright (C) 2010-2017 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (retro_dirent.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 <retro_common.h>
#include <boolean.h>
#include <retro_dirent.h>
#include <encodings/utf.h>
#include <compat/strl.h>
#if defined(_WIN32)
# ifdef _MSC_VER
# define setmode _setmode
# endif
#include <sys/stat.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
#elif defined(VITA)
# include <psp2/io/fcntl.h>
# include <psp2/io/dirent.h>
#include <psp2/io/stat.h>
#else
# if defined(PSP)
# include <pspiofilemgr.h>
# endif
# include <sys/types.h>
# include <sys/stat.h>
# include <dirent.h>
# include <unistd.h>
#endif
#ifdef __CELLOS_LV2__
#include <cell/cell_fs.h>
#endif
#if (defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)) || defined(__QNX__) || defined(PSP)
#include <unistd.h> /* stat() is defined here */
#endif
#if defined(_MSC_VER) && _MSC_VER < 1400 || defined(_XBOX)
#ifndef LEGACY_WIN32
#define LEGACY_WIN32
#endif
#endif
struct RDIR
{
#if defined(_WIN32)
#if defined(LEGACY_WIN32)
WIN32_FIND_DATA entry;
#else
WIN32_FIND_DATAW entry;
#endif
HANDLE directory;
bool next;
char path[PATH_MAX_LENGTH];
#elif defined(VITA) || defined(PSP)
SceUID directory;
SceIoDirent entry;
#elif defined(__CELLOS_LV2__)
CellFsErrno error;
int directory;
CellFsDirent entry;
#else
DIR *directory;
const struct dirent *entry;
#endif
};
struct RDIR *retro_opendir(const char *name)
{
#if defined(_WIN32)
char path_buf[1024];
char *path_local = NULL;
wchar_t *path_wide = NULL;
#endif
struct RDIR *rdir = (struct RDIR*)calloc(1, sizeof(*rdir));
if (!rdir)
return NULL;
#if defined(_WIN32)
(void)path_wide;
(void)path_local;
path_buf[0] = '\0';
snprintf(path_buf, sizeof(path_buf), "%s\\*", name);
#if defined(LEGACY_WIN32)
path_local = utf8_to_local_string_alloc(path_buf);
rdir->directory = FindFirstFile(path_local, &rdir->entry);
if (path_local)
free(path_local);
#else
path_wide = utf8_to_utf16_string_alloc(path_buf);
rdir->directory = FindFirstFileW(path_wide, &rdir->entry);
if (path_wide)
free(path_wide);
#endif
#elif defined(VITA) || defined(PSP)
rdir->directory = sceIoDopen(name);
#elif defined(_3DS)
rdir->directory = (name && *name)? opendir(name) : NULL;
rdir->entry = NULL;
#elif defined(__CELLOS_LV2__)
rdir->error = cellFsOpendir(name, &rdir->directory);
#else
rdir->directory = opendir(name);
rdir->entry = NULL;
#endif
return rdir;
}
bool retro_dirent_error(struct RDIR *rdir)
{
#if defined(_WIN32)
return (rdir->directory == INVALID_HANDLE_VALUE);
#elif defined(VITA) || defined(PSP)
return (rdir->directory < 0);
#elif defined(__CELLOS_LV2__)
return (rdir->error != CELL_FS_SUCCEEDED);
#else
return !(rdir->directory);
#endif
}
int retro_readdir(struct RDIR *rdir)
{
#if defined(_WIN32)
if(rdir->next)
#if defined(LEGACY_WIN32)
return (FindNextFile(rdir->directory, &rdir->entry) != 0);
#else
return (FindNextFileW(rdir->directory, &rdir->entry) != 0);
#endif
rdir->next = true;
return (rdir->directory != INVALID_HANDLE_VALUE);
#elif defined(VITA) || defined(PSP)
return (sceIoDread(rdir->directory, &rdir->entry) > 0);
#elif defined(__CELLOS_LV2__)
uint64_t nread;
rdir->error = cellFsReaddir(rdir->directory, &rdir->entry, &nread);
return (nread != 0);
#else
return ((rdir->entry = readdir(rdir->directory)) != NULL);
#endif
}
const char *retro_dirent_get_name(struct RDIR *rdir)
{
#if defined(_WIN32)
#if defined(LEGACY_WIN32)
char *name_local = local_to_utf8_string_alloc(rdir->entry.cFileName);
memset(rdir->entry.cFileName, 0, sizeof(rdir->entry.cFileName));
strlcpy(rdir->entry.cFileName, name_local, sizeof(rdir->entry.cFileName));
if (name_local)
free(name_local);
#else
char *name = utf16_to_utf8_string_alloc(rdir->entry.cFileName);
memset(rdir->entry.cFileName, 0, sizeof(rdir->entry.cFileName));
strlcpy((char*)rdir->entry.cFileName, name, sizeof(rdir->entry.cFileName));
if (name)
free(name);
#endif
return (char*)rdir->entry.cFileName;
#elif defined(VITA) || defined(PSP) || defined(__CELLOS_LV2__)
return rdir->entry.d_name;
#else
return rdir->entry->d_name;
#endif
}
/**
*
* retro_dirent_is_dir:
* @rdir : pointer to the directory entry.
* @path : path to the directory entry.
*
* Is the directory listing entry a directory?
*
* Returns: true if directory listing entry is
* a directory, false if not.
*/
bool retro_dirent_is_dir(struct RDIR *rdir, const char *path)
{
#if defined(_WIN32)
const WIN32_FIND_DATA *entry = (const WIN32_FIND_DATA*)&rdir->entry;
return entry->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
#elif defined(PSP) || defined(VITA)
const SceIoDirent *entry = (const SceIoDirent*)&rdir->entry;
#if defined(PSP)
return (entry->d_stat.st_attr & FIO_SO_IFDIR) == FIO_SO_IFDIR;
#elif defined(VITA)
return SCE_S_ISDIR(entry->d_stat.st_mode);
#endif
#elif defined(__CELLOS_LV2__)
CellFsDirent *entry = (CellFsDirent*)&rdir->entry;
return (entry->d_type == CELL_FS_TYPE_DIRECTORY);
#else
struct stat buf;
#if defined(DT_DIR)
const struct dirent *entry = (const struct dirent*)rdir->entry;
if (entry->d_type == DT_DIR)
return true;
/* This can happen on certain file systems. */
if (!(entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK))
return false;
#endif
/* dirent struct doesn't have d_type, do it the slow way ... */
if (stat(path, &buf) < 0)
return false;
return S_ISDIR(buf.st_mode);
#endif
}
void retro_dirent_include_hidden(struct RDIR *rdir, bool include_hidden)
{
#ifdef _WIN32
if (include_hidden)
rdir->entry.dwFileAttributes |= FILE_ATTRIBUTE_HIDDEN;
else
rdir->entry.dwFileAttributes &= ~FILE_ATTRIBUTE_HIDDEN;
#endif
}
void retro_closedir(struct RDIR *rdir)
{
if (!rdir)
return;
#if defined(_WIN32)
if (rdir->directory != INVALID_HANDLE_VALUE)
FindClose(rdir->directory);
#elif defined(VITA) || defined(PSP)
sceIoDclose(rdir->directory);
#elif defined(__CELLOS_LV2__)
rdir->error = cellFsClosedir(rdir->directory);
#else
if (rdir->directory)
closedir(rdir->directory);
#endif
free(rdir);
}