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VVVVVV/third_party/physfs/physfs_internal.h

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/*
* Internal function/structure declaration. Do NOT include in your
* application.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#ifndef _INCLUDE_PHYSFS_INTERNAL_H_
#define _INCLUDE_PHYSFS_INTERNAL_H_
#ifndef __PHYSICSFS_INTERNAL__
#error Do not include this header from your applications.
#endif
/* Turn off MSVC warnings that are aggressively anti-portability. */
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS 1
#endif
#include "physfs.h"
/* The holy trinity. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "physfs_platforms.h"
#include <assert.h>
#define __PHYSFS_COMPILE_TIME_ASSERT(name, x) \
typedef int __PHYSFS_compile_time_assert_##name[(x) * 2 - 1]
/* !!! FIXME: remove this when revamping stack allocation code... */
#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__WATCOMC__)
#include <malloc.h>
#endif
#ifdef PHYSFS_PLATFORM_SOLARIS
#include <alloca.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __GNUC__
#define PHYSFS_MINIMUM_GCC_VERSION(major, minor) \
( ((__GNUC__ << 16) + __GNUC_MINOR__) >= (((major) << 16) + (minor)) )
#else
#define PHYSFS_MINIMUM_GCC_VERSION(major, minor) (0)
#endif
#ifdef __cplusplus
/* C++ always has a real inline keyword. */
#elif (defined macintosh) && !(defined __MWERKS__)
# define inline
#elif (defined _MSC_VER)
# define inline __inline
#endif
#if defined(PHYSFS_PLATFORM_LINUX) && !defined(_FILE_OFFSET_BITS)
#define _FILE_OFFSET_BITS 64
#endif
/* All public APIs need to be in physfs.h with a PHYSFS_DECL.
All file-private symbols need to be marked "static".
Everything shared between PhysicsFS sources needs to be in this
file between the visibility pragma blocks. */
#if PHYSFS_MINIMUM_GCC_VERSION(4,0) || defined(__clang__)
#define PHYSFS_HAVE_PRAGMA_VISIBILITY 1
#endif
#if PHYSFS_HAVE_PRAGMA_VISIBILITY
#pragma GCC visibility push(hidden)
#endif
/* These are the build-in archivers. We list them all as "extern" here without
#ifdefs to keep it tidy, but obviously you need to make sure these are
wrapped in PHYSFS_SUPPORTS_* checks before actually referencing them. */
extern const PHYSFS_Archiver __PHYSFS_Archiver_DIR;
extern const PHYSFS_Archiver __PHYSFS_Archiver_ZIP;
extern const PHYSFS_Archiver __PHYSFS_Archiver_7Z;
extern const PHYSFS_Archiver __PHYSFS_Archiver_GRP;
extern const PHYSFS_Archiver __PHYSFS_Archiver_QPAK;
extern const PHYSFS_Archiver __PHYSFS_Archiver_HOG;
extern const PHYSFS_Archiver __PHYSFS_Archiver_MVL;
extern const PHYSFS_Archiver __PHYSFS_Archiver_WAD;
extern const PHYSFS_Archiver __PHYSFS_Archiver_SLB;
extern const PHYSFS_Archiver __PHYSFS_Archiver_ISO9660;
extern const PHYSFS_Archiver __PHYSFS_Archiver_VDF;
/* a real C99-compliant snprintf() is in Visual Studio 2015,
but just use this everywhere for binary compatibility. */
#if defined(_MSC_VER)
int __PHYSFS_msvc_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap);
int __PHYSFS_msvc_snprintf(char *outBuf, size_t size, const char *format, ...);
#define vsnprintf __PHYSFS_msvc_vsnprintf
#define snprintf __PHYSFS_msvc_snprintf
#endif
/* Some simple wrappers around WinRT C++ interfaces we can call from C. */
#ifdef PHYSFS_PLATFORM_WINRT
const void *__PHYSFS_winrtCalcBaseDir(void);
const void *__PHYSFS_winrtCalcPrefDir(void);
#endif
/* atomic operations. */
#if defined(_MSC_VER) && (_MSC_VER >= 1500)
#include <intrin.h>
__PHYSFS_COMPILE_TIME_ASSERT(LongEqualsInt, sizeof (int) == sizeof (long));
#define __PHYSFS_ATOMIC_INCR(ptrval) _InterlockedIncrement((long*)(ptrval))
#define __PHYSFS_ATOMIC_DECR(ptrval) _InterlockedDecrement((long*)(ptrval))
#elif defined(__clang__) || (defined(__GNUC__) && (((__GNUC__ * 10000) + (__GNUC_MINOR__ * 100)) >= 40100))
#define __PHYSFS_ATOMIC_INCR(ptrval) __sync_fetch_and_add(ptrval, 1)
#define __PHYSFS_ATOMIC_DECR(ptrval) __sync_fetch_and_add(ptrval, -1)
#else
#define PHYSFS_NEED_ATOMIC_OP_FALLBACK 1
int __PHYSFS_ATOMIC_INCR(int *ptrval);
int __PHYSFS_ATOMIC_DECR(int *ptrval);
#endif
/*
* Interface for small allocations. If you need a little scratch space for
* a throwaway buffer or string, use this. It will make small allocations
* on the stack if possible, and use allocator.Malloc() if they are too
* large. This helps reduce malloc pressure.
* There are some rules, though:
* NEVER return a pointer from this, as stack-allocated buffers go away
* when your function returns.
* NEVER allocate in a loop, as stack-allocated pointers will pile up. Call
* a function that uses smallAlloc from your loop, so the allocation can
* free each time.
* NEVER call smallAlloc with any complex expression (it's a macro that WILL
* have side effects...it references the argument multiple times). Use a
* variable or a literal.
* NEVER free a pointer from this with anything but smallFree. It will not
* be a valid pointer to the allocator, regardless of where the memory came
* from.
* NEVER realloc a pointer from this.
* NEVER forget to use smallFree: it may not be a pointer from the stack.
* NEVER forget to check for NULL...allocation can fail here, of course!
*/
#define __PHYSFS_SMALLALLOCTHRESHOLD 256
void *__PHYSFS_initSmallAlloc(void *ptr, const size_t len);
#define __PHYSFS_smallAlloc(bytes) ( \
__PHYSFS_initSmallAlloc( \
(((bytes) < __PHYSFS_SMALLALLOCTHRESHOLD) ? \
alloca((size_t)((bytes)+sizeof(void*))) : NULL), (bytes)) \
)
void __PHYSFS_smallFree(void *ptr);
/* Use the allocation hooks. */
#define malloc(x) Do not use malloc() directly.
#define realloc(x, y) Do not use realloc() directly.
#define free(x) Do not use free() directly.
/* !!! FIXME: add alloca check here. */
/* by default, enable things, so builds can opt out of a few things they
want to avoid. But you can build with this #defined to 0 if you would
like to turn off everything except a handful of things you opt into. */
#ifndef PHYSFS_SUPPORTS_DEFAULT
#define PHYSFS_SUPPORTS_DEFAULT 1
#endif
#ifndef PHYSFS_SUPPORTS_ZIP
#define PHYSFS_SUPPORTS_ZIP PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_7Z
#define PHYSFS_SUPPORTS_7Z PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_GRP
#define PHYSFS_SUPPORTS_GRP PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_HOG
#define PHYSFS_SUPPORTS_HOG PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_MVL
#define PHYSFS_SUPPORTS_MVL PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_WAD
#define PHYSFS_SUPPORTS_WAD PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_QPAK
#define PHYSFS_SUPPORTS_QPAK PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_SLB
#define PHYSFS_SUPPORTS_SLB PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_ISO9660
#define PHYSFS_SUPPORTS_ISO9660 PHYSFS_SUPPORTS_DEFAULT
#endif
#ifndef PHYSFS_SUPPORTS_VDF
#define PHYSFS_SUPPORTS_VDF PHYSFS_SUPPORTS_DEFAULT
#endif
#if PHYSFS_SUPPORTS_7Z
/* 7zip support needs a global init function called at startup (no deinit). */
extern void SZIP_global_init(void);
#endif
/* The latest supported PHYSFS_Io::version value. */
#define CURRENT_PHYSFS_IO_API_VERSION 0
/* The latest supported PHYSFS_Archiver::version value. */
#define CURRENT_PHYSFS_ARCHIVER_API_VERSION 0
/* This byteorder stuff was lifted from SDL. https://www.libsdl.org/ */
#define PHYSFS_LIL_ENDIAN 1234
#define PHYSFS_BIG_ENDIAN 4321
#ifdef __linux__
#include <endian.h>
#define PHYSFS_BYTEORDER __BYTE_ORDER
#else /* __linux__ */
#if defined(__hppa__) || \
defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
(defined(__MIPS__) && defined(__MISPEB__)) || \
defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \
defined(__sparc__)
#define PHYSFS_BYTEORDER PHYSFS_BIG_ENDIAN
#else
#define PHYSFS_BYTEORDER PHYSFS_LIL_ENDIAN
#endif
#endif /* __linux__ */
/*
* When sorting the entries in an archive, we use a modified QuickSort.
* When there are less then PHYSFS_QUICKSORT_THRESHOLD entries left to sort,
* we switch over to a BubbleSort for the remainder. Tweak to taste.
*
* You can override this setting by defining PHYSFS_QUICKSORT_THRESHOLD
* before #including "physfs_internal.h".
*/
#ifndef PHYSFS_QUICKSORT_THRESHOLD
#define PHYSFS_QUICKSORT_THRESHOLD 4
#endif
/*
* Sort an array (or whatever) of (max) elements. This uses a mixture of
* a QuickSort and BubbleSort internally.
* (cmpfn) is used to determine ordering, and (swapfn) does the actual
* swapping of elements in the list.
*/
void __PHYSFS_sort(void *entries, size_t max,
int (*cmpfn)(void *, size_t, size_t),
void (*swapfn)(void *, size_t, size_t));
/* These get used all over for lessening code clutter. */
/* "ERRPASS" means "something else just set the error state for us" and is
just to make it clear where the responsibility for the error state lays. */
#define BAIL(e, r) do { if (e) PHYSFS_setErrorCode(e); return r; } while (0)
#define BAIL_ERRPASS(r) do { return r; } while (0)
#define BAIL_IF(c, e, r) do { if (c) { if (e) PHYSFS_setErrorCode(e); return r; } } while (0)
#define BAIL_IF_ERRPASS(c, r) do { if (c) { return r; } } while (0)
#define BAIL_MUTEX(e, m, r) do { if (e) PHYSFS_setErrorCode(e); __PHYSFS_platformReleaseMutex(m); return r; } while (0)
#define BAIL_MUTEX_ERRPASS(m, r) do { __PHYSFS_platformReleaseMutex(m); return r; } while (0)
#define BAIL_IF_MUTEX(c, e, m, r) do { if (c) { if (e) PHYSFS_setErrorCode(e); __PHYSFS_platformReleaseMutex(m); return r; } } while (0)
#define BAIL_IF_MUTEX_ERRPASS(c, m, r) do { if (c) { __PHYSFS_platformReleaseMutex(m); return r; } } while (0)
#define GOTO(e, g) do { if (e) PHYSFS_setErrorCode(e); goto g; } while (0)
#define GOTO_ERRPASS(g) do { goto g; } while (0)
#define GOTO_IF(c, e, g) do { if (c) { if (e) PHYSFS_setErrorCode(e); goto g; } } while (0)
#define GOTO_IF_ERRPASS(c, g) do { if (c) { goto g; } } while (0)
#define GOTO_MUTEX(e, m, g) do { if (e) PHYSFS_setErrorCode(e); __PHYSFS_platformReleaseMutex(m); goto g; } while (0)
#define GOTO_MUTEX_ERRPASS(m, g) do { __PHYSFS_platformReleaseMutex(m); goto g; } while (0)
#define GOTO_IF_MUTEX(c, e, m, g) do { if (c) { if (e) PHYSFS_setErrorCode(e); __PHYSFS_platformReleaseMutex(m); goto g; } } while (0)
#define GOTO_IF_MUTEX_ERRPASS(c, m, g) do { if (c) { __PHYSFS_platformReleaseMutex(m); goto g; } } while (0)
#define __PHYSFS_ARRAYLEN(x) ( (sizeof (x)) / (sizeof (x[0])) )
#ifdef PHYSFS_NO_64BIT_SUPPORT
#define __PHYSFS_SI64(x) ((PHYSFS_sint64) (x))
#define __PHYSFS_UI64(x) ((PHYSFS_uint64) (x))
#elif (defined __GNUC__)
#define __PHYSFS_SI64(x) x##LL
#define __PHYSFS_UI64(x) x##ULL
#elif (defined _MSC_VER)
#define __PHYSFS_SI64(x) x##i64
#define __PHYSFS_UI64(x) x##ui64
#else
#define __PHYSFS_SI64(x) ((PHYSFS_sint64) (x))
#define __PHYSFS_UI64(x) ((PHYSFS_uint64) (x))
#endif
/*
* Check if a ui64 will fit in the platform's address space.
* The initial sizeof check will optimize this macro out entirely on
* 64-bit (and larger?!) platforms, and the other condition will
* return zero or non-zero if the variable will fit in the platform's
* size_t, suitable to pass to malloc. This is kinda messy, but effective.
*/
#define __PHYSFS_ui64FitsAddressSpace(s) ( \
(sizeof (PHYSFS_uint64) <= sizeof (size_t)) || \
((s) < (__PHYSFS_UI64(0xFFFFFFFFFFFFFFFF) >> (64-(sizeof(size_t)*8)))) \
)
/*
* Like strdup(), but uses the current PhysicsFS allocator.
*/
char *__PHYSFS_strdup(const char *str);
/*
* Give a hash value for a C string (uses djb's xor hashing algorithm).
*/
PHYSFS_uint32 __PHYSFS_hashString(const char *str, size_t len);
/*
* The current allocator. Not valid before PHYSFS_init is called!
*/
extern PHYSFS_Allocator __PHYSFS_AllocatorHooks;
/* convenience macro to make this less cumbersome internally... */
#define allocator __PHYSFS_AllocatorHooks
/*
* Create a PHYSFS_Io for a file in the physical filesystem.
* This path is in platform-dependent notation. (mode) must be 'r', 'w', or
* 'a' for Read, Write, or Append.
*/
PHYSFS_Io *__PHYSFS_createNativeIo(const char *path, const int mode);
/*
* Create a PHYSFS_Io for a buffer of memory (READ-ONLY). If you already
* have one of these, just use its duplicate() method, and it'll increment
* its refcount without allocating a copy of the buffer.
*/
PHYSFS_Io *__PHYSFS_createMemoryIo(const void *buf, PHYSFS_uint64 len,
void (*destruct)(void *));
/*
* Read (len) bytes from (io) into (buf). Returns non-zero on success,
* zero on i/o error. Literally: "return (io->read(io, buf, len) == len);"
*/
int __PHYSFS_readAll(PHYSFS_Io *io, void *buf, const size_t len);
/* These are shared between some archivers. */
void UNPK_abandonArchive(void *opaque);
void UNPK_closeArchive(void *opaque);
void *UNPK_openArchive(PHYSFS_Io *io);
void *UNPK_addEntry(void *opaque, char *name, const int isdir,
const PHYSFS_sint64 ctime, const PHYSFS_sint64 mtime,
const PHYSFS_uint64 pos, const PHYSFS_uint64 len);
PHYSFS_Io *UNPK_openRead(void *opaque, const char *name);
PHYSFS_Io *UNPK_openWrite(void *opaque, const char *name);
PHYSFS_Io *UNPK_openAppend(void *opaque, const char *name);
int UNPK_remove(void *opaque, const char *name);
int UNPK_mkdir(void *opaque, const char *name);
int UNPK_stat(void *opaque, const char *fn, PHYSFS_Stat *st);
#define UNPK_enumerate __PHYSFS_DirTreeEnumerate
/* Optional API many archivers use this to manage their directory tree. */
/* !!! FIXME: document this better. */
typedef struct __PHYSFS_DirTreeEntry
{
char *name; /* Full path in archive. */
struct __PHYSFS_DirTreeEntry *hashnext; /* next item in hash bucket. */
struct __PHYSFS_DirTreeEntry *children; /* linked list of kids, if dir. */
struct __PHYSFS_DirTreeEntry *sibling; /* next item in same dir. */
int isdir;
} __PHYSFS_DirTreeEntry;
typedef struct __PHYSFS_DirTree
{
__PHYSFS_DirTreeEntry *root; /* root of directory tree. */
__PHYSFS_DirTreeEntry **hash; /* all entries hashed for fast lookup. */
size_t hashBuckets; /* number of buckets in hash. */
size_t entrylen; /* size in bytes of entries (including subclass). */
} __PHYSFS_DirTree;
int __PHYSFS_DirTreeInit(__PHYSFS_DirTree *dt, const size_t entrylen);
void *__PHYSFS_DirTreeAdd(__PHYSFS_DirTree *dt, char *name, const int isdir);
void *__PHYSFS_DirTreeFind(__PHYSFS_DirTree *dt, const char *path);
PHYSFS_EnumerateCallbackResult __PHYSFS_DirTreeEnumerate(void *opaque,
const char *dname, PHYSFS_EnumerateCallback cb,
const char *origdir, void *callbackdata);
void __PHYSFS_DirTreeDeinit(__PHYSFS_DirTree *dt);
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/*------------ ----------------*/
/*------------ You MUST implement the following functions ----------------*/
/*------------ if porting to a new platform. ----------------*/
/*------------ (see platform/unix.c for an example) ----------------*/
/*------------ ----------------*/
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/*
* The dir separator; '/' on unix, '\\' on win32, ":" on MacOS, etc...
* Obviously, this isn't a function. If you need more than one char for this,
* you'll need to pull some old pieces of PhysicsFS out of revision control.
*/
#if defined(PHYSFS_PLATFORM_WINDOWS) || defined(PHYSFS_PLATFORM_OS2)
#define __PHYSFS_platformDirSeparator '\\'
#else
#define __PHYSFS_STANDARD_DIRSEP 1
#define __PHYSFS_platformDirSeparator '/'
#endif
/*
* Initialize the platform. This is called when PHYSFS_init() is called from
* the application.
*
* Return zero if there was a catastrophic failure (which prevents you from
* functioning at all), and non-zero otherwise.
*/
int __PHYSFS_platformInit(void);
/*
* Deinitialize the platform. This is called when PHYSFS_deinit() is called
* from the application. You can use this to clean up anything you've
* allocated in your platform driver.
*/
void __PHYSFS_platformDeinit(void);
/*
* Open a file for reading. (filename) is in platform-dependent notation. The
* file pointer should be positioned on the first byte of the file.
*
* The return value will be some platform-specific datatype that is opaque to
* the caller; it could be a (FILE *) under Unix, or a (HANDLE *) under win32.
*
* The same file can be opened for read multiple times, and each should have
* a unique file handle; this is frequently employed to prevent race
* conditions in the archivers.
*
* Call PHYSFS_setErrorCode() and return (NULL) if the file can't be opened.
*/
void *__PHYSFS_platformOpenRead(const char *filename);
/*
* Open a file for writing. (filename) is in platform-dependent notation. If
* the file exists, it should be truncated to zero bytes, and if it doesn't
* exist, it should be created as a zero-byte file. The file pointer should
* be positioned on the first byte of the file.
*
* The return value will be some platform-specific datatype that is opaque to
* the caller; it could be a (FILE *) under Unix, or a (HANDLE *) under win32,
* etc.
*
* Opening a file for write multiple times has undefined results.
*
* Call PHYSFS_setErrorCode() and return (NULL) if the file can't be opened.
*/
void *__PHYSFS_platformOpenWrite(const char *filename);
/*
* Open a file for appending. (filename) is in platform-dependent notation. If
* the file exists, the file pointer should be place just past the end of the
* file, so that the first write will be one byte after the current end of
* the file. If the file doesn't exist, it should be created as a zero-byte
* file. The file pointer should be positioned on the first byte of the file.
*
* The return value will be some platform-specific datatype that is opaque to
* the caller; it could be a (FILE *) under Unix, or a (HANDLE *) under win32,
* etc.
*
* Opening a file for append multiple times has undefined results.
*
* Call PHYSFS_setErrorCode() and return (NULL) if the file can't be opened.
*/
void *__PHYSFS_platformOpenAppend(const char *filename);
/*
* Read more data from a platform-specific file handle. (opaque) should be
* cast to whatever data type your platform uses. Read a maximum of (len)
* 8-bit bytes to the area pointed to by (buf). If there isn't enough data
* available, return the number of bytes read, and position the file pointer
* immediately after those bytes.
* On success, return (len) and position the file pointer immediately past
* the end of the last read byte. Return (-1) if there is a catastrophic
* error, and call PHYSFS_setErrorCode() to describe the problem; the file
* pointer should not move in such a case. A partial read is success; only
* return (-1) on total failure; presumably, the next read call after a
* partial read will fail as such.
*/
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buf, PHYSFS_uint64 len);
/*
* Write more data to a platform-specific file handle. (opaque) should be
* cast to whatever data type your platform uses. Write a maximum of (len)
* 8-bit bytes from the area pointed to by (buffer). If there is a problem,
* return the number of bytes written, and position the file pointer
* immediately after those bytes. Return (-1) if there is a catastrophic
* error, and call PHYSFS_setErrorCode() to describe the problem; the file
* pointer should not move in such a case. A partial write is success; only
* return (-1) on total failure; presumably, the next write call after a
* partial write will fail as such.
*/
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
PHYSFS_uint64 len);
/*
* Set the file pointer to a new position. (opaque) should be cast to
* whatever data type your platform uses. (pos) specifies the number
* of 8-bit bytes to seek to from the start of the file. Seeking past the
* end of the file is an error condition, and you should check for it.
*
* Not all file types can seek; this is to be expected by the caller.
*
* On error, call PHYSFS_setErrorCode() and return zero. On success, return
* a non-zero value.
*/
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos);
/*
* Get the file pointer's position, in an 8-bit byte offset from the start of
* the file. (opaque) should be cast to whatever data type your platform
* uses.
*
* Not all file types can "tell"; this is to be expected by the caller.
*
* On error, call PHYSFS_setErrorCode() and return -1. On success, return >= 0.
*/
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque);
/*
* Determine the current size of a file, in 8-bit bytes, from an open file.
*
* The caller expects that this information may not be available for all
* file types on all platforms.
*
* Return -1 if you can't do it, and call PHYSFS_setErrorCode(). Otherwise,
* return the file length in 8-bit bytes.
*/
PHYSFS_sint64 __PHYSFS_platformFileLength(void *handle);
/*
* Read filesystem metadata for a specific path.
*
* This needs to fill in all the fields of (stat). For fields that might not
* mean anything on a platform (access time, perhaps), choose a reasonable
* default. if (follow), we want to follow symlinks and stat what they
* link to and not the link itself.
*
* Return zero on failure, non-zero on success.
*/
int __PHYSFS_platformStat(const char *fn, PHYSFS_Stat *stat, const int follow);
/*
* Flush any pending writes to disk. (opaque) should be cast to whatever data
* type your platform uses. Be sure to check for errors; the caller expects
* that this function can fail if there was a flushing error, etc.
*
* Return zero on failure, non-zero on success.
*/
int __PHYSFS_platformFlush(void *opaque);
/*
* Close file and deallocate resources. (opaque) should be cast to whatever
* data type your platform uses. This should close the file in any scenario:
* flushing is a separate function call, and this function should never fail.
*
* You should clean up all resources associated with (opaque); the pointer
* will be considered invalid after this call.
*/
void __PHYSFS_platformClose(void *opaque);
/*
* Platform implementation of PHYSFS_getCdRomDirsCallback()...
* CD directories are discovered and reported to the callback one at a time.
* Pointers passed to the callback are assumed to be invalid to the
* application after the callback returns, so you can free them or whatever.
* Callback does not assume results will be sorted in any meaningful way.
*/
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data);
/*
* Calculate the base dir, if your platform needs special consideration.
* Just return NULL if the standard routines will suffice. (see
* calculateBaseDir() in physfs.c ...)
* Your string must end with a dir separator if you don't return NULL.
* Caller will allocator.Free() the retval if it's not NULL.
*/
char *__PHYSFS_platformCalcBaseDir(const char *argv0);
/*
* Get the platform-specific user dir.
* As of PhysicsFS 2.1, returning NULL means fatal error.
* Your string must end with a dir separator if you don't return NULL.
* Caller will allocator.Free() the retval if it's not NULL.
*/
char *__PHYSFS_platformCalcUserDir(void);
/* This is the cached version from PHYSFS_init(). This is a fast call. */
const char *__PHYSFS_getUserDir(void); /* not deprecated internal version. */
/*
* Get the platform-specific pref dir.
* Returning NULL means fatal error.
* Your string must end with a dir separator if you don't return NULL.
* Caller will allocator.Free() the retval if it's not NULL.
* Caller will make missing directories if necessary; this just reports
* the final path.
*/
char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app);
/*
* Return a pointer that uniquely identifies the current thread.
* On a platform without threading, (0x1) will suffice. These numbers are
* arbitrary; the only requirement is that no two threads have the same
* pointer.
*/
void *__PHYSFS_platformGetThreadID(void);
/*
* Enumerate a directory of files. This follows the rules for the
* PHYSFS_Archiver::enumerate() method, except that the (dirName) that is
* passed to this function is converted to platform-DEPENDENT notation by
* the caller. The PHYSFS_Archiver version uses platform-independent
* notation. Note that ".", "..", and other meta-entries should always
* be ignored.
*/
PHYSFS_EnumerateCallbackResult __PHYSFS_platformEnumerate(const char *dirname,
PHYSFS_EnumerateCallback callback,
const char *origdir, void *callbackdata);
/*
* Make a directory in the actual filesystem. (path) is specified in
* platform-dependent notation. On error, return zero and set the error
* message. Return non-zero on success.
*/
int __PHYSFS_platformMkDir(const char *path);
/*
* Remove a file or directory entry in the actual filesystem. (path) is
* specified in platform-dependent notation. Note that this deletes files
* _and_ directories, so you might need to do some determination.
* Non-empty directories should report an error and not delete themselves
* or their contents.
*
* Deleting a symlink should remove the link, not what it points to.
*
* On error, return zero and set the error message. Return non-zero on success.
*/
int __PHYSFS_platformDelete(const char *path);
/*
* Create a platform-specific mutex. This can be whatever datatype your
* platform uses for mutexes, but it is cast to a (void *) for abstractness.
*
* Return (NULL) if you couldn't create one. Systems without threads can
* return any arbitrary non-NULL value.
*/
void *__PHYSFS_platformCreateMutex(void);
/*
* Destroy a platform-specific mutex, and clean up any resources associated
* with it. (mutex) is a value previously returned by
* __PHYSFS_platformCreateMutex(). This can be a no-op on single-threaded
* platforms.
*/
void __PHYSFS_platformDestroyMutex(void *mutex);
/*
* Grab possession of a platform-specific mutex. Mutexes should be recursive;
* that is, the same thread should be able to call this function multiple
* times in a row without causing a deadlock. This function should block
* until a thread can gain possession of the mutex.
*
* Return non-zero if the mutex was grabbed, zero if there was an
* unrecoverable problem grabbing it (this should not be a matter of
* timing out! We're talking major system errors; block until the mutex
* is available otherwise.)
*
* _DO NOT_ call PHYSFS_setErrorCode() in here! Since setErrorCode calls this
* function, you'll cause an infinite recursion. This means you can't
* use the BAIL_*MACRO* macros, either.
*/
int __PHYSFS_platformGrabMutex(void *mutex);
/*
* Relinquish possession of the mutex when this method has been called
* once for each time that platformGrabMutex was called. Once possession has
* been released, the next thread in line to grab the mutex (if any) may
* proceed.
*
* _DO NOT_ call PHYSFS_setErrorCode() in here! Since setErrorCode calls this
* function, you'll cause an infinite recursion. This means you can't
* use the BAIL_*MACRO* macros, either.
*/
void __PHYSFS_platformReleaseMutex(void *mutex);
#if PHYSFS_HAVE_PRAGMA_VISIBILITY
#pragma GCC visibility pop
#endif
#ifdef __cplusplus
}
#endif
#endif
/* end of physfs_internal.h ... */
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