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/**
* \file physfs.h
*
* Main header file for PhysicsFS.
*/
/**
* \mainpage PhysicsFS
*
* The latest version of PhysicsFS can be found at:
* https://icculus.org/physfs/
*
* PhysicsFS; a portable, flexible file i/o abstraction.
*
* This API gives you access to a system file system in ways superior to the
* stdio or system i/o calls. The brief benefits:
*
* - It's portable.
* - It's safe. No file access is permitted outside the specified dirs.
* - It's flexible. Archives (.ZIP files) can be used transparently as
* directory structures.
*
* With PhysicsFS, you have a single writing directory and multiple
* directories (the "search path") for reading. You can think of this as a
* filesystem within a filesystem. If (on Windows) you were to set the
* writing directory to "C:\MyGame\MyWritingDirectory", then no PHYSFS calls
* could touch anything above this directory, including the "C:\MyGame" and
* "C:\" directories. This prevents an application's internal scripting
* language from piddling over c:\\config.sys, for example. If you'd rather
* give PHYSFS full access to the system's REAL file system, set the writing
* dir to "C:\", but that's generally A Bad Thing for several reasons.
*
* Drive letters are hidden in PhysicsFS once you set up your initial paths.
* The search path creates a single, hierarchical directory structure.
* Not only does this lend itself well to general abstraction with archives,
* it also gives better support to operating systems like MacOS and Unix.
* Generally speaking, you shouldn't ever hardcode a drive letter; not only
* does this hurt portability to non-Microsoft OSes, but it limits your win32
* users to a single drive, too. Use the PhysicsFS abstraction functions and
* allow user-defined configuration options, too. When opening a file, you
* specify it like it was on a Unix filesystem: if you want to write to
* "C:\MyGame\MyConfigFiles\game.cfg", then you might set the write dir to
* "C:\MyGame" and then open "MyConfigFiles/game.cfg". This gives an
* abstraction across all platforms. Specifying a file in this way is termed
* "platform-independent notation" in this documentation. Specifying a
* a filename in a form such as "C:\mydir\myfile" or
* "MacOS hard drive:My Directory:My File" is termed "platform-dependent
* notation". The only time you use platform-dependent notation is when
* setting up your write directory and search path; after that, all file
* access into those directories are done with platform-independent notation.
*
* All files opened for writing are opened in relation to the write directory,
* which is the root of the writable filesystem. When opening a file for
* reading, PhysicsFS goes through the search path. This is NOT the
* same thing as the PATH environment variable. An application using
* PhysicsFS specifies directories to be searched which may be actual
* directories, or archive files that contain files and subdirectories of
* their own. See the end of these docs for currently supported archive
* formats.
*
* Once the search path is defined, you may open files for reading. If you've
* got the following search path defined (to use a win32 example again):
*
* - C:\\mygame
* - C:\\mygame\\myuserfiles
* - D:\\mygamescdromdatafiles
* - C:\\mygame\\installeddatafiles.zip
*
* Then a call to PHYSFS_openRead("textfiles/myfile.txt") (note the directory
* separator, lack of drive letter, and lack of dir separator at the start of
* the string; this is platform-independent notation) will check for
* C:\\mygame\\textfiles\\myfile.txt, then
* C:\\mygame\\myuserfiles\\textfiles\\myfile.txt, then
* D:\\mygamescdromdatafiles\\textfiles\\myfile.txt, then, finally, for
* textfiles\\myfile.txt inside of C:\\mygame\\installeddatafiles.zip.
* Remember that most archive types and platform filesystems store their
* filenames in a case-sensitive manner, so you should be careful to specify
* it correctly.
*
* Files opened through PhysicsFS may NOT contain "." or ".." or ":" as dir
* elements. Not only are these meaningless on MacOS Classic and/or Unix,
* they are a security hole. Also, symbolic links (which can be found in
* some archive types and directly in the filesystem on Unix platforms) are
* NOT followed until you call PHYSFS_permitSymbolicLinks(). That's left to
* your own discretion, as following a symlink can allow for access outside
* the write dir and search paths. For portability, there is no mechanism for
* creating new symlinks in PhysicsFS.
*
* The write dir is not included in the search path unless you specifically
* add it. While you CAN change the write dir as many times as you like,
* you should probably set it once and stick to it. Remember that your
* program will not have permission to write in every directory on Unix and
* NT systems.
*
* All files are opened in binary mode; there is no endline conversion for
* textfiles. Other than that, PhysicsFS has some convenience functions for
* platform-independence. There is a function to tell you the current
* platform's dir separator ("\\" on windows, "/" on Unix, ":" on MacOS),
* which is needed only to set up your search/write paths. There is a
* function to tell you what CD-ROM drives contain accessible discs, and a
* function to recommend a good search path, etc.
*
* A recommended order for the search path is the write dir, then the base dir,
* then the cdrom dir, then any archives discovered. Quake 3 does something
* like this, but moves the archives to the start of the search path. Build
* Engine games, like Duke Nukem 3D and Blood, place the archives last, and
* use the base dir for both searching and writing. There is a helper
* function (PHYSFS_setSaneConfig()) that puts together a basic configuration
* for you, based on a few parameters. Also see the comments on
* PHYSFS_getBaseDir(), and PHYSFS_getPrefDir() for info on what those
* are and how they can help you determine an optimal search path.
*
* PhysicsFS 2.0 adds the concept of "mounting" archives to arbitrary points
* in the search path. If a zipfile contains "maps/level.map" and you mount
* that archive at "mods/mymod", then you would have to open
* "mods/mymod/maps/level.map" to access the file, even though "mods/mymod"
* isn't actually specified in the .zip file. Unlike the Unix mentality of
* mounting a filesystem, "mods/mymod" doesn't actually have to exist when
* mounting the zipfile. It's a "virtual" directory. The mounting mechanism
* allows the developer to seperate archives in the tree and avoid trampling
* over files when added new archives, such as including mod support in a
* game...keeping external content on a tight leash in this manner can be of
* utmost importance to some applications.
*
* PhysicsFS is mostly thread safe. The errors returned by
* PHYSFS_getLastErrorCode() are unique by thread, and library-state-setting
* functions are mutex'd. For efficiency, individual file accesses are
* not locked, so you can not safely read/write/seek/close/etc the same
* file from two threads at the same time. Other race conditions are bugs
* that should be reported/patched.
*
* While you CAN use stdio/syscall file access in a program that has PHYSFS_*
* calls, doing so is not recommended, and you can not directly use system
* filehandles with PhysicsFS and vice versa (but as of PhysicsFS 2.1, you
* can wrap them in a PHYSFS_Io interface yourself if you wanted to).
*
* Note that archives need not be named as such: if you have a ZIP file and
* rename it with a .PKG extension, the file will still be recognized as a
* ZIP archive by PhysicsFS; the file's contents are used to determine its
* type where possible.
*
* Currently supported archive types:
* - .ZIP (pkZip/WinZip/Info-ZIP compatible)
* - .7Z (7zip archives)
* - .ISO (ISO9660 files, CD-ROM images)
* - .GRP (Build Engine groupfile archives)
* - .PAK (Quake I/II archive format)
* - .HOG (Descent I/II/III HOG file archives)
* - .MVL (Descent II movielib archives)
* - .WAD (DOOM engine archives)
* - .VDF (Gothic I/II engine archives)
* - .SLB (Independence War archives)
*
* String policy for PhysicsFS 2.0 and later:
*
* PhysicsFS 1.0 could only deal with null-terminated ASCII strings. All high
* ASCII chars resulted in undefined behaviour, and there was no Unicode
* support at all. PhysicsFS 2.0 supports Unicode without breaking binary
* compatibility with the 1.0 API by using UTF-8 encoding of all strings
* passed in and out of the library.
*
* All strings passed through PhysicsFS are in null-terminated UTF-8 format.
* This means that if all you care about is English (ASCII characters <= 127)
* then you just use regular C strings. If you care about Unicode (and you
* should!) then you need to figure out what your platform wants, needs, and
* offers. If you are on Windows before Win2000 and build with Unicode
* support, your TCHAR strings are two bytes per character (this is called
* "UCS-2 encoding"). Any modern Windows uses UTF-16, which is two bytes
* per character for most characters, but some characters are four. You
* should convert them to UTF-8 before handing them to PhysicsFS with
* PHYSFS_utf8FromUtf16(), which handles both UTF-16 and UCS-2. If you're
* using Unix or Mac OS X, your wchar_t strings are four bytes per character
* ("UCS-4 encoding", sometimes called "UTF-32"). Use PHYSFS_utf8FromUcs4().
* Mac OS X can give you UTF-8 directly from a CFString or NSString, and many
* Unixes generally give you C strings in UTF-8 format everywhere. If you
* have a single-byte high ASCII charset, like so-many European "codepages"
* you may be out of luck. We'll convert from "Latin1" to UTF-8 only, and
* never back to Latin1. If you're above ASCII 127, all bets are off: move
* to Unicode or use your platform's facilities. Passing a C string with
* high-ASCII data that isn't UTF-8 encoded will NOT do what you expect!
*
* Naturally, there's also PHYSFS_utf8ToUcs2(), PHYSFS_utf8ToUtf16(), and
* PHYSFS_utf8ToUcs4() to get data back into a format you like. Behind the
* scenes, PhysicsFS will use Unicode where possible: the UTF-8 strings on
* Windows will be converted and used with the multibyte Windows APIs, for
* example.
*
* PhysicsFS offers basic encoding conversion support, but not a whole string
* library. Get your stuff into whatever format you can work with.
*
* Most platforms supported by PhysicsFS 2.1 and later fully support Unicode.
* Some older platforms have been dropped (Windows 95, Mac OS 9). Some, like
* OS/2, might be able to convert to a local codepage or will just fail to
* open/create the file. Modern OSes (macOS, Linux, Windows, etc) should all
* be fine.
*
* Many game-specific archivers are seriously unprepared for Unicode (the
* Descent HOG/MVL and Build Engine GRP archivers, for example, only offer a
* DOS 8.3 filename, for example). Nothing can be done for these, but they
* tend to be legacy formats for existing content that was all ASCII (and
* thus, valid UTF-8) anyhow. Other formats, like .ZIP, don't explicitly
* offer Unicode support, but unofficially expect filenames to be UTF-8
* encoded, and thus Just Work. Most everything does the right thing without
* bothering you, but it's good to be aware of these nuances in case they
* don't.
*
*
* Other stuff:
*
* Please see the file LICENSE.txt in the source's root directory for
* licensing and redistribution rights.
*
* Please see the file CREDITS.txt in the source's "docs" directory for
* a more or less complete list of who's responsible for this.
*
* \author Ryan C. Gordon.
*/
#ifndef _INCLUDE_PHYSFS_H_
#define _INCLUDE_PHYSFS_H_
#ifdef __cplusplus
extern "C" {
#endif
#if defined(PHYSFS_DECL)
/* do nothing. */
#elif defined(PHYSFS_STATIC)
#define PHYSFS_DECL /**/
#elif defined(_WIN32) || defined(__OS2__)
#define PHYSFS_DECL __declspec(dllexport)
#elif defined(__SUNPRO_C)
#define PHYSFS_DECL __global
#elif ((__GNUC__ >= 3) && (!defined(__EMX__)) && (!defined(sun)))
#define PHYSFS_DECL __attribute__((visibility("default")))
#else
#define PHYSFS_DECL
#endif
#if defined(PHYSFS_DEPRECATED)
/* do nothing. */
#elif (__GNUC__ >= 4) /* technically, this arrived in gcc 3.1, but oh well. */
#define PHYSFS_DEPRECATED __attribute__((deprecated))
#else
#define PHYSFS_DEPRECATED
#endif
#if 0 /* !!! FIXME: look into this later. */
#if defined(PHYSFS_CALL)
/* do nothing. */
#elif defined(__WIN32__) && !defined(__GNUC__)
#define PHYSFS_CALL __cdecl
#elif defined(__OS2__) || defined(OS2) /* should work across all compilers. */
#define PHYSFS_CALL _System
#else
#define PHYSFS_CALL
#endif
#endif
/**
* \typedef PHYSFS_uint8
* \brief An unsigned, 8-bit integer type.
*/
typedef unsigned char PHYSFS_uint8;
/**
* \typedef PHYSFS_sint8
* \brief A signed, 8-bit integer type.
*/
typedef signed char PHYSFS_sint8;
/**
* \typedef PHYSFS_uint16
* \brief An unsigned, 16-bit integer type.
*/
typedef unsigned short PHYSFS_uint16;
/**
* \typedef PHYSFS_sint16
* \brief A signed, 16-bit integer type.
*/
typedef signed short PHYSFS_sint16;
/**
* \typedef PHYSFS_uint32
* \brief An unsigned, 32-bit integer type.
*/
typedef unsigned int PHYSFS_uint32;
/**
* \typedef PHYSFS_sint32
* \brief A signed, 32-bit integer type.
*/
typedef signed int PHYSFS_sint32;
/**
* \typedef PHYSFS_uint64
* \brief An unsigned, 64-bit integer type.
* \warning on platforms without any sort of 64-bit datatype, this is
* equivalent to PHYSFS_uint32!
*/
/**
* \typedef PHYSFS_sint64
* \brief A signed, 64-bit integer type.
* \warning on platforms without any sort of 64-bit datatype, this is
* equivalent to PHYSFS_sint32!
*/
#if (defined PHYSFS_NO_64BIT_SUPPORT) /* oh well. */
typedef PHYSFS_uint32 PHYSFS_uint64;
typedef PHYSFS_sint32 PHYSFS_sint64;
#elif (defined _MSC_VER)
typedef signed __int64 PHYSFS_sint64;
typedef unsigned __int64 PHYSFS_uint64;
#else
typedef unsigned long long PHYSFS_uint64;
typedef signed long long PHYSFS_sint64;
#endif
#ifndef DOXYGEN_SHOULD_IGNORE_THIS
/* Make sure the types really have the right sizes */
#define PHYSFS_COMPILE_TIME_ASSERT(name, x) \
typedef int PHYSFS_compile_time_assert_##name[(x) * 2 - 1]
PHYSFS_COMPILE_TIME_ASSERT(uint8IsOneByte, sizeof(PHYSFS_uint8) == 1);
PHYSFS_COMPILE_TIME_ASSERT(sint8IsOneByte, sizeof(PHYSFS_sint8) == 1);
PHYSFS_COMPILE_TIME_ASSERT(uint16IsTwoBytes, sizeof(PHYSFS_uint16) == 2);
PHYSFS_COMPILE_TIME_ASSERT(sint16IsTwoBytes, sizeof(PHYSFS_sint16) == 2);
PHYSFS_COMPILE_TIME_ASSERT(uint32IsFourBytes, sizeof(PHYSFS_uint32) == 4);
PHYSFS_COMPILE_TIME_ASSERT(sint32IsFourBytes, sizeof(PHYSFS_sint32) == 4);
#ifndef PHYSFS_NO_64BIT_SUPPORT
PHYSFS_COMPILE_TIME_ASSERT(uint64IsEightBytes, sizeof(PHYSFS_uint64) == 8);
PHYSFS_COMPILE_TIME_ASSERT(sint64IsEightBytes, sizeof(PHYSFS_sint64) == 8);
#endif
#undef PHYSFS_COMPILE_TIME_ASSERT
#endif /* DOXYGEN_SHOULD_IGNORE_THIS */
/**
* \struct PHYSFS_File
* \brief A PhysicsFS file handle.
*
* You get a pointer to one of these when you open a file for reading,
* writing, or appending via PhysicsFS.
*
* As you can see from the lack of meaningful fields, you should treat this
* as opaque data. Don't try to manipulate the file handle, just pass the
* pointer you got, unmolested, to various PhysicsFS APIs.
*
* \sa PHYSFS_openRead
* \sa PHYSFS_openWrite
* \sa PHYSFS_openAppend
* \sa PHYSFS_close
* \sa PHYSFS_read
* \sa PHYSFS_write
* \sa PHYSFS_seek
* \sa PHYSFS_tell
* \sa PHYSFS_eof
* \sa PHYSFS_setBuffer
* \sa PHYSFS_flush
*/
typedef struct PHYSFS_File
{
void *opaque; /**< That's all you get. Don't touch. */
} PHYSFS_File;
/**
* \def PHYSFS_file
* \brief 1.0 API compatibility define.
*
* PHYSFS_file is identical to PHYSFS_File. This #define is here for backwards
* compatibility with the 1.0 API, which had an inconsistent capitalization
* convention in this case. New code should use PHYSFS_File, as this #define
* may go away someday.
*
* \sa PHYSFS_File
*/
#define PHYSFS_file PHYSFS_File
/**
* \struct PHYSFS_ArchiveInfo
* \brief Information on various PhysicsFS-supported archives.
*
* This structure gives you details on what sort of archives are supported
* by this implementation of PhysicsFS. Archives tend to be things like
* ZIP files and such.
*
* \warning Not all binaries are created equal! PhysicsFS can be built with
* or without support for various archives. You can check with
* PHYSFS_supportedArchiveTypes() to see if your archive type is
* supported.
*
* \sa PHYSFS_supportedArchiveTypes
* \sa PHYSFS_registerArchiver
* \sa PHYSFS_deregisterArchiver
*/
typedef struct PHYSFS_ArchiveInfo
{
const char *extension; /**< Archive file extension: "ZIP", for example. */
const char *description; /**< Human-readable archive description. */
const char *author; /**< Person who did support for this archive. */
const char *url; /**< URL related to this archive */
int supportsSymlinks; /**< non-zero if archive offers symbolic links. */
} PHYSFS_ArchiveInfo;
/**
* \struct PHYSFS_Version
* \brief Information the version of PhysicsFS in use.
*
* Represents the library's version as three levels: major revision
* (increments with massive changes, additions, and enhancements),
* minor revision (increments with backwards-compatible changes to the
* major revision), and patchlevel (increments with fixes to the minor
* revision).
*
* \sa PHYSFS_VERSION
* \sa PHYSFS_getLinkedVersion
*/
typedef struct PHYSFS_Version
{
PHYSFS_uint8 major; /**< major revision */
PHYSFS_uint8 minor; /**< minor revision */
PHYSFS_uint8 patch; /**< patchlevel */
} PHYSFS_Version;
#ifndef DOXYGEN_SHOULD_IGNORE_THIS
#define PHYSFS_VER_MAJOR 3
#define PHYSFS_VER_MINOR 3
#define PHYSFS_VER_PATCH 0
#endif /* DOXYGEN_SHOULD_IGNORE_THIS */
/* PhysicsFS state stuff ... */
/**
* \def PHYSFS_VERSION(x)
* \brief Macro to determine PhysicsFS version program was compiled against.
*
* This macro fills in a PHYSFS_Version structure with the version of the
* library you compiled against. This is determined by what header the
* compiler uses. Note that if you dynamically linked the library, you might
* have a slightly newer or older version at runtime. That version can be
* determined with PHYSFS_getLinkedVersion(), which, unlike PHYSFS_VERSION,
* is not a macro.
*
* \param x A pointer to a PHYSFS_Version struct to initialize.
*
* \sa PHYSFS_Version
* \sa PHYSFS_getLinkedVersion
*/
#define PHYSFS_VERSION(x) \
{ \
(x)->major = PHYSFS_VER_MAJOR; \
(x)->minor = PHYSFS_VER_MINOR; \
(x)->patch = PHYSFS_VER_PATCH; \
}
/**
* \fn void PHYSFS_getLinkedVersion(PHYSFS_Version *ver)
* \brief Get the version of PhysicsFS that is linked against your program.
*
* If you are using a shared library (DLL) version of PhysFS, then it is
* possible that it will be different than the version you compiled against.
*
* This is a real function; the macro PHYSFS_VERSION tells you what version
* of PhysFS you compiled against:
*
* \code
* PHYSFS_Version compiled;
* PHYSFS_Version linked;
*
* PHYSFS_VERSION(&compiled);
* PHYSFS_getLinkedVersion(&linked);
* printf("We compiled against PhysFS version %d.%d.%d ...\n",
* compiled.major, compiled.minor, compiled.patch);
* printf("But we linked against PhysFS version %d.%d.%d.\n",
* linked.major, linked.minor, linked.patch);
* \endcode
*
* This function may be called safely at any time, even before PHYSFS_init().
*
* \sa PHYSFS_VERSION
*/
PHYSFS_DECL void PHYSFS_getLinkedVersion(PHYSFS_Version *ver);
#ifdef __ANDROID__
typedef struct PHYSFS_AndroidInit
{
void *jnienv;
void *context;
} PHYSFS_AndroidInit;
#endif
/**
* \fn int PHYSFS_init(const char *argv0)
* \brief Initialize the PhysicsFS library.
*
* This must be called before any other PhysicsFS function.
*
* This should be called prior to any attempts to change your process's
* current working directory.
*
* \warning On Android, argv0 should be a non-NULL pointer to a
* PHYSFS_AndroidInit struct. This struct must hold a valid JNIEnv *
* and a JNI jobject of a Context (either the application context or
* the current Activity is fine). Both are cast to a void * so we
* don't need jni.h included wherever physfs.h is. PhysicsFS
* uses these objects to query some system details. PhysicsFS does
* not hold a reference to the JNIEnv or Context past the call to
* PHYSFS_init(). If you pass a NULL here, PHYSFS_init can still
* succeed, but PHYSFS_getBaseDir() and PHYSFS_getPrefDir() will be
* incorrect.
*
* \param argv0 the argv[0] string passed to your program's mainline.
* This may be NULL on most platforms (such as ones without a
* standard main() function), but you should always try to pass
* something in here. Many Unix-like systems _need_ to pass argv[0]
* from main() in here. See warning about Android, too!
* \return nonzero on success, zero on error. Specifics of the error can be
* gleaned from PHYSFS_getLastError().
*
* \sa PHYSFS_deinit
* \sa PHYSFS_isInit
*/
PHYSFS_DECL int PHYSFS_init(const char *argv0);
/**
* \fn int PHYSFS_deinit(void)
* \brief Deinitialize the PhysicsFS library.
*
* This closes any files opened via PhysicsFS, blanks the search/write paths,
* frees memory, and invalidates all of your file handles.
*
* Note that this call can FAIL if there's a file open for writing that
* refuses to close (for example, the underlying operating system was
* buffering writes to network filesystem, and the fileserver has crashed,
* or a hard drive has failed, etc). It is usually best to close all write
* handles yourself before calling this function, so that you can gracefully
* handle a specific failure.
*
* Once successfully deinitialized, PHYSFS_init() can be called again to
* restart the subsystem. All default API states are restored at this
* point, with the exception of any custom allocator you might have
* specified, which survives between initializations.
*
* \return nonzero on success, zero on error. Specifics of the error can be
* gleaned from PHYSFS_getLastError(). If failure, state of PhysFS is
* undefined, and probably badly screwed up.
*
* \sa PHYSFS_init
* \sa PHYSFS_isInit
*/
PHYSFS_DECL int PHYSFS_deinit(void);
/**
* \fn const PHYSFS_ArchiveInfo **PHYSFS_supportedArchiveTypes(void)
* \brief Get a list of supported archive types.
*
* Get a list of archive types supported by this implementation of PhysicFS.
* These are the file formats usable for search path entries. This is for
* informational purposes only. Note that the extension listed is merely
* convention: if we list "ZIP", you can open a PkZip-compatible archive
* with an extension of "XYZ", if you like.
*
* The returned value is an array of pointers to PHYSFS_ArchiveInfo structures,
* with a NULL entry to signify the end of the list:
*
* \code
* PHYSFS_ArchiveInfo **i;
*
* for (i = PHYSFS_supportedArchiveTypes(); *i != NULL; i++)
* {
* printf("Supported archive: [%s], which is [%s].\n",
* (*i)->extension, (*i)->description);
* }
* \endcode
*
* The return values are pointers to internal memory, and should
* be considered READ ONLY, and never freed. The returned values are
* valid until the next call to PHYSFS_deinit(), PHYSFS_registerArchiver(),
* or PHYSFS_deregisterArchiver().
*
* \return READ ONLY Null-terminated array of READ ONLY structures.
*
* \sa PHYSFS_registerArchiver
* \sa PHYSFS_deregisterArchiver
*/
PHYSFS_DECL const PHYSFS_ArchiveInfo **PHYSFS_supportedArchiveTypes(void);
/**
* \fn void PHYSFS_freeList(void *listVar)
* \brief Deallocate resources of lists returned by PhysicsFS.
*
* Certain PhysicsFS functions return lists of information that are
* dynamically allocated. Use this function to free those resources.
*
* It is safe to pass a NULL here, but doing so will cause a crash in versions
* before PhysicsFS 2.1.0.
*
* \param listVar List of information specified as freeable by this function.
* Passing NULL is safe; it is a valid no-op.
*
* \sa PHYSFS_getCdRomDirs
* \sa PHYSFS_enumerateFiles
* \sa PHYSFS_getSearchPath
*/
PHYSFS_DECL void PHYSFS_freeList(void *listVar);
/**
* \fn const char *PHYSFS_getLastError(void)
* \brief Get human-readable error information.
*
* \deprecated Use PHYSFS_getLastErrorCode() and PHYSFS_getErrorByCode() instead.
*
* \warning As of PhysicsFS 2.1, this function has been nerfed.
* Before PhysicsFS 2.1, this function was the only way to get
* error details beyond a given function's basic return value.
* This was meant to be a human-readable string in one of several
* languages, and was not useful for application parsing. This was
* a problem, because the developer and not the user chose the
* language at compile time, and the PhysicsFS maintainers had
* to (poorly) maintain a significant amount of localization work.
* The app couldn't parse the strings, even if they counted on a
* specific language, since some were dynamically generated.
* In 2.1 and later, this always returns a static string in
* English; you may use it as a key string for your own
* localizations if you like, as we'll promise not to change
* existing error strings. Also, if your application wants to
* look at specific errors, we now offer a better option:
* use PHYSFS_getLastErrorCode() instead.
*
* Get the last PhysicsFS error message as a human-readable, null-terminated
* string. This will return NULL if there's been no error since the last call
* to this function. The pointer returned by this call points to an internal
* buffer. Each thread has a unique error state associated with it, but each
* time a new error message is set, it will overwrite the previous one
* associated with that thread. It is safe to call this function at anytime,
* even before PHYSFS_init().
*
* PHYSFS_getLastError() and PHYSFS_getLastErrorCode() both reset the same
* thread-specific error state. Calling one will wipe out the other's
* data. If you need both, call PHYSFS_getLastErrorCode(), then pass that
* value to PHYSFS_getErrorByCode().
*
* As of PhysicsFS 2.1, this function only presents text in the English
* language, but the strings are static, so you can use them as keys into
* your own localization dictionary. These strings are meant to be passed on
* directly to the user.
*
* Generally, applications should only concern themselves with whether a
* given function failed; however, if your code require more specifics, you
* should use PHYSFS_getLastErrorCode() instead of this function.
*
* \return READ ONLY string of last error message.
*
* \sa PHYSFS_getLastErrorCode
* \sa PHYSFS_getErrorByCode
*/
PHYSFS_DECL const char *PHYSFS_getLastError(void) PHYSFS_DEPRECATED;
/**
* \fn const char *PHYSFS_getDirSeparator(void)
* \brief Get platform-dependent dir separator string.
*
* This returns "\\" on win32, "/" on Unix, and ":" on MacOS. It may be more
* than one character, depending on the platform, and your code should take
* that into account. Note that this is only useful for setting up the
* search/write paths, since access into those dirs always use '/'
* (platform-independent notation) to separate directories. This is also
* handy for getting platform-independent access when using stdio calls.
*
* \return READ ONLY null-terminated string of platform's dir separator.
*/
PHYSFS_DECL const char *PHYSFS_getDirSeparator(void);
/**
* \fn void PHYSFS_permitSymbolicLinks(int allow)
* \brief Enable or disable following of symbolic links.
*
* Some physical filesystems and archives contain files that are just pointers
* to other files. On the physical filesystem, opening such a link will
* (transparently) open the file that is pointed to.
*
* By default, PhysicsFS will check if a file is really a symlink during open
* calls and fail if it is. Otherwise, the link could take you outside the
* write and search paths, and compromise security.
*
* If you want to take that risk, call this function with a non-zero parameter.
* Note that this is more for sandboxing a program's scripting language, in
* case untrusted scripts try to compromise the system. Generally speaking,
* a user could very well have a legitimate reason to set up a symlink, so
* unless you feel there's a specific danger in allowing them, you should
* permit them.
*
* Symlinks are only explicitly checked when dealing with filenames
* in platform-independent notation. That is, when setting up your
* search and write paths, etc, symlinks are never checked for.
*
* Please note that PHYSFS_stat() will always check the path specified; if
* that path is a symlink, it will not be followed in any case. If symlinks
* aren't permitted through this function, PHYSFS_stat() ignores them, and
* would treat the query as if the path didn't exist at all.
*
* Symbolic link permission can be enabled or disabled at any time after
* you've called PHYSFS_init(), and is disabled by default.
*
* \param allow nonzero to permit symlinks, zero to deny linking.
*
* \sa PHYSFS_symbolicLinksPermitted
*/
PHYSFS_DECL void PHYSFS_permitSymbolicLinks(int allow);
/**
* \fn char **PHYSFS_getCdRomDirs(void)
* \brief Get an array of paths to available CD-ROM drives.
*
* The dirs returned are platform-dependent ("D:\" on Win32, "/cdrom" or
* whatnot on Unix). Dirs are only returned if there is a disc ready and
* accessible in the drive. So if you've got two drives (D: and E:), and only
* E: has a disc in it, then that's all you get. If the user inserts a disc
* in D: and you call this function again, you get both drives. If, on a
* Unix box, the user unmounts a disc and remounts it elsewhere, the next
* call to this function will reflect that change.
*
* This function refers to "CD-ROM" media, but it really means "inserted disc
* media," such as DVD-ROM, HD-DVD, CDRW, and Blu-Ray discs. It looks for
* filesystems, and as such won't report an audio CD, unless there's a
* mounted filesystem track on it.
*
* The returned value is an array of strings, with a NULL entry to signify the
* end of the list:
*
* \code
* char **cds = PHYSFS_getCdRomDirs();
* char **i;
*
* for (i = cds; *i != NULL; i++)
* printf("cdrom dir [%s] is available.\n", *i);
*
* PHYSFS_freeList(cds);
* \endcode
*
* This call may block while drives spin up. Be forewarned.
*
* When you are done with the returned information, you may dispose of the
* resources by calling PHYSFS_freeList() with the returned pointer.
*
* \return Null-terminated array of null-terminated strings.
*
* \sa PHYSFS_getCdRomDirsCallback
*/
PHYSFS_DECL char **PHYSFS_getCdRomDirs(void);
/**
* \fn const char *PHYSFS_getBaseDir(void)
* \brief Get the path where the application resides.
*
* Helper function.
*
* Get the "base dir". This is the directory where the application was run
* from, which is probably the installation directory, and may or may not
* be the process's current working directory.
*
* You should probably use the base dir in your search path.
*
* \warning On most platforms, this is a directory; on Android, this gives
* you the path to the app's package (APK) file. As APK files are
* just .zip files, you can mount them in PhysicsFS like regular
* directories. You'll probably want to call
* PHYSFS_setRoot(basedir, "/assets") after mounting to make your
* app's actual data available directly without all the Android
* metadata and directory offset. Note that if you passed a NULL to
* PHYSFS_init(), you will not get the APK file here.
*
* \return READ ONLY string of base dir in platform-dependent notation.
*
* \sa PHYSFS_getPrefDir
*/
PHYSFS_DECL const char *PHYSFS_getBaseDir(void);
/**
* \fn const char *PHYSFS_getUserDir(void)
* \brief Get the path where user's home directory resides.
*
* \deprecated As of PhysicsFS 2.1, you probably want PHYSFS_getPrefDir().
*
* Helper function.
*
* Get the "user dir". This is meant to be a suggestion of where a specific
* user of the system can store files. On Unix, this is her home directory.
* On systems with no concept of multiple home directories (MacOS, win95),
* this will default to something like "C:\mybasedir\users\username"
* where "username" will either be the login name, or "default" if the
* platform doesn't support multiple users, either.
*
* \return READ ONLY string of user dir in platform-dependent notation.
*
* \sa PHYSFS_getBaseDir
* \sa PHYSFS_getPrefDir
*/
PHYSFS_DECL const char *PHYSFS_getUserDir(void) PHYSFS_DEPRECATED;
/**
* \fn const char *PHYSFS_getWriteDir(void)
* \brief Get path where PhysicsFS will allow file writing.
*
* Get the current write dir. The default write dir is NULL.
*
* \return READ ONLY string of write dir in platform-dependent notation,
* OR NULL IF NO WRITE PATH IS CURRENTLY SET.
*
* \sa PHYSFS_setWriteDir
*/
PHYSFS_DECL const char *PHYSFS_getWriteDir(void);
/**
* \fn int PHYSFS_setWriteDir(const char *newDir)
* \brief Tell PhysicsFS where it may write files.
*
* Set a new write dir. This will override the previous setting.
*
* This call will fail (and fail to change the write dir) if the current
* write dir still has files open in it.
*
* \param newDir The new directory to be the root of the write dir,
* specified in platform-dependent notation. Setting to NULL
* disables the write dir, so no files can be opened for
* writing via PhysicsFS.
* \return non-zero on success, zero on failure. All attempts to open a file
* for writing via PhysicsFS will fail until this call succeeds.
* Use PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_getWriteDir
*/
PHYSFS_DECL int PHYSFS_setWriteDir(const char *newDir);
/**
* \fn int PHYSFS_addToSearchPath(const char *newDir, int appendToPath)
* \brief Add an archive or directory to the search path.
*
* \deprecated As of PhysicsFS 2.0, use PHYSFS_mount() instead. This
* function just wraps it anyhow.
*
* This function is equivalent to:
*
* \code
* PHYSFS_mount(newDir, NULL, appendToPath);
* \endcode
*
* You must use this and not PHYSFS_mount if binary compatibility with
* PhysicsFS 1.0 is important (which it may not be for many people).
*
* \sa PHYSFS_mount
* \sa PHYSFS_removeFromSearchPath
* \sa PHYSFS_getSearchPath
*/
PHYSFS_DECL int PHYSFS_addToSearchPath(const char *newDir, int appendToPath)
PHYSFS_DEPRECATED;
/**
* \fn int PHYSFS_removeFromSearchPath(const char *oldDir)
* \brief Remove a directory or archive from the search path.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_unmount() instead. This
* function just wraps it anyhow. There's no functional difference
* except the vocabulary changed from "adding to the search path"
* to "mounting" when that functionality was extended, and thus
* the preferred way to accomplish this function's work is now
* called "unmounting."
*
* This function is equivalent to:
*
* \code
* PHYSFS_unmount(oldDir);
* \endcode
*
* You must use this and not PHYSFS_unmount if binary compatibility with
* PhysicsFS 1.0 is important (which it may not be for many people).
*
* \sa PHYSFS_addToSearchPath
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_unmount
*/
PHYSFS_DECL int PHYSFS_removeFromSearchPath(const char *oldDir)
PHYSFS_DEPRECATED;
/**
* \fn char **PHYSFS_getSearchPath(void)
* \brief Get the current search path.
*
* The default search path is an empty list.
*
* The returned value is an array of strings, with a NULL entry to signify the
* end of the list:
*
* \code
* char **i;
*
* for (i = PHYSFS_getSearchPath(); *i != NULL; i++)
* printf("[%s] is in the search path.\n", *i);
* \endcode
*
* When you are done with the returned information, you may dispose of the
* resources by calling PHYSFS_freeList() with the returned pointer.
*
* \return Null-terminated array of null-terminated strings. NULL if there
* was a problem (read: OUT OF MEMORY).
*
* \sa PHYSFS_getSearchPathCallback
* \sa PHYSFS_addToSearchPath
* \sa PHYSFS_removeFromSearchPath
*/
PHYSFS_DECL char **PHYSFS_getSearchPath(void);
/**
* \fn int PHYSFS_setSaneConfig(const char *organization, const char *appName, const char *archiveExt, int includeCdRoms, int archivesFirst)
* \brief Set up sane, default paths.
*
* Helper function.
*
* The write dir will be set to the pref dir returned by
* \code PHYSFS_getPrefDir(organization, appName) \endcode, which is
* created if it doesn't exist.
*
* The above is sufficient to make sure your program's configuration directory
* is separated from other clutter, and platform-independent.
*
* The search path will be:
*
* - The Write Dir (created if it doesn't exist)
* - The Base Dir (PHYSFS_getBaseDir())
* - All found CD-ROM dirs (optionally)
*
* These directories are then searched for files ending with the extension
* (archiveExt), which, if they are valid and supported archives, will also
* be added to the search path. If you specified "PKG" for (archiveExt), and
* there's a file named data.PKG in the base dir, it'll be checked. Archives
* can either be appended or prepended to the search path in alphabetical
* order, regardless of which directories they were found in. All archives
* are mounted in the root of the virtual file system ("/").
*
* All of this can be accomplished from the application, but this just does it
* all for you. Feel free to add more to the search path manually, too.
*
* \param organization Name of your company/group/etc to be used as a
* dirname, so keep it small, and no-frills.
*
* \param appName Program-specific name of your program, to separate it
* from other programs using PhysicsFS.
*
* \param archiveExt File extension used by your program to specify an
* archive. For example, Quake 3 uses "pk3", even though
* they are just zipfiles. Specify NULL to not dig out
* archives automatically. Do not specify the '.' char;
* If you want to look for ZIP files, specify "ZIP" and
* not ".ZIP" ... the archive search is case-insensitive.
*
* \param includeCdRoms Non-zero to include CD-ROMs in the search path, and
* (if (archiveExt) != NULL) search them for archives.
* This may cause a significant amount of blocking
* while discs are accessed, and if there are no discs
* in the drive (or even not mounted on Unix systems),
* then they may not be made available anyhow. You may
* want to specify zero and handle the disc setup
* yourself.
*
* \param archivesFirst Non-zero to prepend the archives to the search path.
* Zero to append them. Ignored if !(archiveExt).
*
* \return nonzero on success, zero on error. Use PHYSFS_getLastErrorCode()
* to obtain the specific error.
*/
PHYSFS_DECL int PHYSFS_setSaneConfig(const char *organization,
const char *appName,
const char *archiveExt,
int includeCdRoms,
int archivesFirst);
/* Directory management stuff ... */
/**
* \fn int PHYSFS_mkdir(const char *dirName)
* \brief Create a directory.
*
* This is specified in platform-independent notation in relation to the
* write dir. All missing parent directories are also created if they
* don't exist.
*
* So if you've got the write dir set to "C:\mygame\writedir" and call
* PHYSFS_mkdir("downloads/maps") then the directories
* "C:\mygame\writedir\downloads" and "C:\mygame\writedir\downloads\maps"
* will be created if possible. If the creation of "maps" fails after we
* have successfully created "downloads", then the function leaves the
* created directory behind and reports failure.
*
* \param dirName New dir to create.
* \return nonzero on success, zero on error. Use
* PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_delete
*/
PHYSFS_DECL int PHYSFS_mkdir(const char *dirName);
/**
* \fn int PHYSFS_delete(const char *filename)
* \brief Delete a file or directory.
*
* (filename) is specified in platform-independent notation in relation to the
* write dir.
*
* A directory must be empty before this call can delete it.
*
* Deleting a symlink will remove the link, not what it points to, regardless
* of whether you "permitSymLinks" or not.
*
* So if you've got the write dir set to "C:\mygame\writedir" and call
* PHYSFS_delete("downloads/maps/level1.map") then the file
* "C:\mygame\writedir\downloads\maps\level1.map" is removed from the
* physical filesystem, if it exists and the operating system permits the
* deletion.
*
* Note that on Unix systems, deleting a file may be successful, but the
* actual file won't be removed until all processes that have an open
* filehandle to it (including your program) close their handles.
*
* Chances are, the bits that make up the file still exist, they are just
* made available to be written over at a later point. Don't consider this
* a security method or anything. :)
*
* \param filename Filename to delete.
* \return nonzero on success, zero on error. Use PHYSFS_getLastErrorCode()
* to obtain the specific error.
*/
PHYSFS_DECL int PHYSFS_delete(const char *filename);
/**
* \fn const char *PHYSFS_getRealDir(const char *filename)
* \brief Figure out where in the search path a file resides.
*
* The file is specified in platform-independent notation. The returned
* filename will be the element of the search path where the file was found,
* which may be a directory, or an archive. Even if there are multiple
* matches in different parts of the search path, only the first one found
* is used, just like when opening a file.
*
* So, if you look for "maps/level1.map", and C:\\mygame is in your search
* path and C:\\mygame\\maps\\level1.map exists, then "C:\mygame" is returned.
*
* If a any part of a match is a symbolic link, and you've not explicitly
* permitted symlinks, then it will be ignored, and the search for a match
* will continue.
*
* If you specify a fake directory that only exists as a mount point, it'll
* be associated with the first archive mounted there, even though that
* directory isn't necessarily contained in a real archive.
*
* \warning This will return NULL if there is no real directory associated
* with (filename). Specifically, PHYSFS_mountIo(),
* PHYSFS_mountMemory(), and PHYSFS_mountHandle() will return NULL
* even if the filename is found in the search path. Plan accordingly.
*
* \param filename file to look for.
* \return READ ONLY string of element of search path containing the
* the file in question. NULL if not found.
*/
PHYSFS_DECL const char *PHYSFS_getRealDir(const char *filename);
/**
* \fn char **PHYSFS_enumerateFiles(const char *dir)
* \brief Get a file listing of a search path's directory.
*
* \warning In PhysicsFS versions prior to 2.1, this function would return
* as many items as it could in the face of a failure condition
* (out of memory, disk i/o error, etc). Since this meant apps
* couldn't distinguish between complete success and partial failure,
* and since the function could always return NULL to report
* catastrophic failures anyway, in PhysicsFS 2.1 this function's
* policy changed: it will either return a list of complete results
* or it will return NULL for any failure of any kind, so we can
* guarantee that the enumeration ran to completion and has no gaps
* in its results.
*
* Matching directories are interpolated. That is, if "C:\mydir" is in the
* search path and contains a directory "savegames" that contains "x.sav",
* "y.sav", and "z.sav", and there is also a "C:\userdir" in the search path
* that has a "savegames" subdirectory with "w.sav", then the following code:
*
* \code
* char **rc = PHYSFS_enumerateFiles("savegames");
* char **i;
*
* for (i = rc; *i != NULL; i++)
* printf(" * We've got [%s].\n", *i);
*
* PHYSFS_freeList(rc);
* \endcode
*
* \...will print:
*
* \verbatim
* We've got [x.sav].
* We've got [y.sav].
* We've got [z.sav].
* We've got [w.sav].\endverbatim
*
* Feel free to sort the list however you like. However, the returned data
* will always contain no duplicates, and will be always sorted in alphabetic
* (rather: case-sensitive Unicode) order for you.
*
* Don't forget to call PHYSFS_freeList() with the return value from this
* function when you are done with it.
*
* \param dir directory in platform-independent notation to enumerate.
* \return Null-terminated array of null-terminated strings, or NULL for
* failure cases.
*
* \sa PHYSFS_enumerate
*/
PHYSFS_DECL char **PHYSFS_enumerateFiles(const char *dir);
/**
* \fn int PHYSFS_exists(const char *fname)
* \brief Determine if a file exists in the search path.
*
* Reports true if there is an entry anywhere in the search path by the
* name of (fname).
*
* Note that entries that are symlinks are ignored if
* PHYSFS_permitSymbolicLinks(1) hasn't been called, so you
* might end up further down in the search path than expected.
*
* \param fname filename in platform-independent notation.
* \return non-zero if filename exists. zero otherwise.
*/
PHYSFS_DECL int PHYSFS_exists(const char *fname);
/**
* \fn int PHYSFS_isDirectory(const char *fname)
* \brief Determine if a file in the search path is really a directory.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_stat() instead. This
* function just wraps it anyhow.
*
* Determine if the first occurence of (fname) in the search path is
* really a directory entry.
*
* Note that entries that are symlinks are ignored if
* PHYSFS_permitSymbolicLinks(1) hasn't been called, so you
* might end up further down in the search path than expected.
*
* \param fname filename in platform-independent notation.
* \return non-zero if filename exists and is a directory. zero otherwise.
*
* \sa PHYSFS_stat
* \sa PHYSFS_exists
*/
PHYSFS_DECL int PHYSFS_isDirectory(const char *fname) PHYSFS_DEPRECATED;
/**
* \fn int PHYSFS_isSymbolicLink(const char *fname)
* \brief Determine if a file in the search path is really a symbolic link.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_stat() instead. This
* function just wraps it anyhow.
*
* Determine if the first occurence of (fname) in the search path is
* really a symbolic link.
*
* Note that entries that are symlinks are ignored if
* PHYSFS_permitSymbolicLinks(1) hasn't been called, and as such,
* this function will always return 0 in that case.
*
* \param fname filename in platform-independent notation.
* \return non-zero if filename exists and is a symlink. zero otherwise.
*
* \sa PHYSFS_stat
* \sa PHYSFS_exists
*/
PHYSFS_DECL int PHYSFS_isSymbolicLink(const char *fname) PHYSFS_DEPRECATED;
/**
* \fn PHYSFS_sint64 PHYSFS_getLastModTime(const char *filename)
* \brief Get the last modification time of a file.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_stat() instead. This
* function just wraps it anyhow.
*
* The modtime is returned as a number of seconds since the Unix epoch
* (midnight, Jan 1, 1970). The exact derivation and accuracy of this time
* depends on the particular archiver. If there is no reasonable way to
* obtain this information for a particular archiver, or there was some sort
* of error, this function returns (-1).
*
* You must use this and not PHYSFS_stat() if binary compatibility with
* PhysicsFS 2.0 is important (which it may not be for many people).
*
* \param filename filename to check, in platform-independent notation.
* \return last modified time of the file. -1 if it can't be determined.
*
* \sa PHYSFS_stat
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_getLastModTime(const char *filename)
PHYSFS_DEPRECATED;
/* i/o stuff... */
/**
* \fn PHYSFS_File *PHYSFS_openWrite(const char *filename)
* \brief Open a file for writing.
*
* Open a file for writing, in platform-independent notation and in relation
* to the write dir as the root of the writable filesystem. The specified
* file is created if it doesn't exist. If it does exist, it is truncated to
* zero bytes, and the writing offset is set to the start.
*
* Note that entries that are symlinks are ignored if
* PHYSFS_permitSymbolicLinks(1) hasn't been called, and opening a
* symlink with this function will fail in such a case.
*
* \param filename File to open.
* \return A valid PhysicsFS filehandle on success, NULL on error. Use
* PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_openRead
* \sa PHYSFS_openAppend
* \sa PHYSFS_write
* \sa PHYSFS_close
*/
PHYSFS_DECL PHYSFS_File *PHYSFS_openWrite(const char *filename);
/**
* \fn PHYSFS_File *PHYSFS_openAppend(const char *filename)
* \brief Open a file for appending.
*
* Open a file for writing, in platform-independent notation and in relation
* to the write dir as the root of the writable filesystem. The specified
* file is created if it doesn't exist. If it does exist, the writing offset
* is set to the end of the file, so the first write will be the byte after
* the end.
*
* Note that entries that are symlinks are ignored if
* PHYSFS_permitSymbolicLinks(1) hasn't been called, and opening a
* symlink with this function will fail in such a case.
*
* \param filename File to open.
* \return A valid PhysicsFS filehandle on success, NULL on error. Use
* PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_openRead
* \sa PHYSFS_openWrite
* \sa PHYSFS_write
* \sa PHYSFS_close
*/
PHYSFS_DECL PHYSFS_File *PHYSFS_openAppend(const char *filename);
/**
* \fn PHYSFS_File *PHYSFS_openRead(const char *filename)
* \brief Open a file for reading.
*
* Open a file for reading, in platform-independent notation. The search path
* is checked one at a time until a matching file is found, in which case an
* abstract filehandle is associated with it, and reading may be done.
* The reading offset is set to the first byte of the file.
*
* Note that entries that are symlinks are ignored if
* PHYSFS_permitSymbolicLinks(1) hasn't been called, and opening a
* symlink with this function will fail in such a case.
*
* \param filename File to open.
* \return A valid PhysicsFS filehandle on success, NULL on error.
* Use PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_openWrite
* \sa PHYSFS_openAppend
* \sa PHYSFS_read
* \sa PHYSFS_close
*/
PHYSFS_DECL PHYSFS_File *PHYSFS_openRead(const char *filename);
/**
* \fn int PHYSFS_close(PHYSFS_File *handle)
* \brief Close a PhysicsFS filehandle.
*
* This call is capable of failing if the operating system was buffering
* writes to the physical media, and, now forced to write those changes to
* physical media, can not store the data for some reason. In such a case,
* the filehandle stays open. A well-written program should ALWAYS check the
* return value from the close call in addition to every writing call!
*
* \param handle handle returned from PHYSFS_open*().
* \return nonzero on success, zero on error. Use PHYSFS_getLastErrorCode()
* to obtain the specific error.
*
* \sa PHYSFS_openRead
* \sa PHYSFS_openWrite
* \sa PHYSFS_openAppend
*/
PHYSFS_DECL int PHYSFS_close(PHYSFS_File *handle);
/**
* \fn PHYSFS_sint64 PHYSFS_read(PHYSFS_File *handle, void *buffer, PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
* \brief Read data from a PhysicsFS filehandle
*
* The file must be opened for reading.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_readBytes() instead. This
* function just wraps it anyhow. This function never clarified
* what would happen if you managed to read a partial object, so
* working at the byte level makes this cleaner for everyone,
* especially now that PHYSFS_Io interfaces can be supplied by the
* application.
*
* \param handle handle returned from PHYSFS_openRead().
* \param buffer buffer to store read data into.
* \param objSize size in bytes of objects being read from (handle).
* \param objCount number of (objSize) objects to read from (handle).
* \return number of objects read. PHYSFS_getLastErrorCode() can shed light
* on the reason this might be < (objCount), as can PHYSFS_eof().
* -1 if complete failure.
*
* \sa PHYSFS_readBytes
* \sa PHYSFS_eof
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_read(PHYSFS_File *handle,
void *buffer,
PHYSFS_uint32 objSize,
PHYSFS_uint32 objCount)
PHYSFS_DEPRECATED;
/**
* \fn PHYSFS_sint64 PHYSFS_write(PHYSFS_File *handle, const void *buffer, PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
* \brief Write data to a PhysicsFS filehandle
*
* The file must be opened for writing.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_writeBytes() instead. This
* function just wraps it anyhow. This function never clarified
* what would happen if you managed to write a partial object, so
* working at the byte level makes this cleaner for everyone,
* especially now that PHYSFS_Io interfaces can be supplied by the
* application.
*
* \param handle retval from PHYSFS_openWrite() or PHYSFS_openAppend().
* \param buffer buffer of bytes to write to (handle).
* \param objSize size in bytes of objects being written to (handle).
* \param objCount number of (objSize) objects to write to (handle).
* \return number of objects written. PHYSFS_getLastErrorCode() can shed
* light on the reason this might be < (objCount). -1 if complete
* failure.
*
* \sa PHYSFS_writeBytes
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_write(PHYSFS_File *handle,
const void *buffer,
PHYSFS_uint32 objSize,
PHYSFS_uint32 objCount)
PHYSFS_DEPRECATED;
/* File position stuff... */
/**
* \fn int PHYSFS_eof(PHYSFS_File *handle)
* \brief Check for end-of-file state on a PhysicsFS filehandle.
*
* Determine if the end of file has been reached in a PhysicsFS filehandle.
*
* \param handle handle returned from PHYSFS_openRead().
* \return nonzero if EOF, zero if not.
*
* \sa PHYSFS_read
* \sa PHYSFS_tell
*/
PHYSFS_DECL int PHYSFS_eof(PHYSFS_File *handle);
/**
* \fn PHYSFS_sint64 PHYSFS_tell(PHYSFS_File *handle)
* \brief Determine current position within a PhysicsFS filehandle.
*
* \param handle handle returned from PHYSFS_open*().
* \return offset in bytes from start of file. -1 if error occurred.
* Use PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_seek
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_tell(PHYSFS_File *handle);
/**
* \fn int PHYSFS_seek(PHYSFS_File *handle, PHYSFS_uint64 pos)
* \brief Seek to a new position within a PhysicsFS filehandle.
*
* The next read or write will occur at that place. Seeking past the
* beginning or end of the file is not allowed, and causes an error.
*
* \param handle handle returned from PHYSFS_open*().
* \param pos number of bytes from start of file to seek to.
* \return nonzero on success, zero on error. Use PHYSFS_getLastErrorCode()
* to obtain the specific error.
*
* \sa PHYSFS_tell
*/
PHYSFS_DECL int PHYSFS_seek(PHYSFS_File *handle, PHYSFS_uint64 pos);
/**
* \fn PHYSFS_sint64 PHYSFS_fileLength(PHYSFS_File *handle)
* \brief Get total length of a file in bytes.
*
* Note that if another process/thread is writing to this file at the same
* time, then the information this function supplies could be incorrect
* before you get it. Use with caution, or better yet, don't use at all.
*
* \param handle handle returned from PHYSFS_open*().
* \return size in bytes of the file. -1 if can't be determined.
*
* \sa PHYSFS_tell
* \sa PHYSFS_seek
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_fileLength(PHYSFS_File *handle);
/* Buffering stuff... */
/**
* \fn int PHYSFS_setBuffer(PHYSFS_File *handle, PHYSFS_uint64 bufsize)
* \brief Set up buffering for a PhysicsFS file handle.
*
* Define an i/o buffer for a file handle. A memory block of (bufsize) bytes
* will be allocated and associated with (handle).
*
* For files opened for reading, up to (bufsize) bytes are read from (handle)
* and stored in the internal buffer. Calls to PHYSFS_read() will pull
* from this buffer until it is empty, and then refill it for more reading.
* Note that compressed files, like ZIP archives, will decompress while
* buffering, so this can be handy for offsetting CPU-intensive operations.
* The buffer isn't filled until you do your next read.
*
* For files opened for writing, data will be buffered to memory until the
* buffer is full or the buffer is flushed. Closing a handle implicitly
* causes a flush...check your return values!
*
* Seeking, etc transparently accounts for buffering.
*
* You can resize an existing buffer by calling this function more than once
* on the same file. Setting the buffer size to zero will free an existing
* buffer.
*
* PhysicsFS file handles are unbuffered by default.
*
* Please check the return value of this function! Failures can include
* not being able to seek backwards in a read-only file when removing the
* buffer, not being able to allocate the buffer, and not being able to
* flush the buffer to disk, among other unexpected problems.
*
* \param handle handle returned from PHYSFS_open*().
* \param bufsize size, in bytes, of buffer to allocate.
* \return nonzero if successful, zero on error.
*
* \sa PHYSFS_flush
* \sa PHYSFS_read
* \sa PHYSFS_write
* \sa PHYSFS_close
*/
PHYSFS_DECL int PHYSFS_setBuffer(PHYSFS_File *handle, PHYSFS_uint64 bufsize);
/**
* \fn int PHYSFS_flush(PHYSFS_File *handle)
* \brief Flush a buffered PhysicsFS file handle.
*
* For buffered files opened for writing, this will put the current contents
* of the buffer to disk and flag the buffer as empty if possible.
*
* For buffered files opened for reading or unbuffered files, this is a safe
* no-op, and will report success.
*
* \param handle handle returned from PHYSFS_open*().
* \return nonzero if successful, zero on error.
*
* \sa PHYSFS_setBuffer
* \sa PHYSFS_close
*/
PHYSFS_DECL int PHYSFS_flush(PHYSFS_File *handle);
/* Byteorder stuff... */
/**
* \fn PHYSFS_sint16 PHYSFS_swapSLE16(PHYSFS_sint16 val)
* \brief Swap littleendian signed 16 to platform's native byte order.
*
* Take a 16-bit signed value in littleendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_sint16 PHYSFS_swapSLE16(PHYSFS_sint16 val);
/**
* \fn PHYSFS_uint16 PHYSFS_swapULE16(PHYSFS_uint16 val)
* \brief Swap littleendian unsigned 16 to platform's native byte order.
*
* Take a 16-bit unsigned value in littleendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_uint16 PHYSFS_swapULE16(PHYSFS_uint16 val);
/**
* \fn PHYSFS_sint32 PHYSFS_swapSLE32(PHYSFS_sint32 val)
* \brief Swap littleendian signed 32 to platform's native byte order.
*
* Take a 32-bit signed value in littleendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_sint32 PHYSFS_swapSLE32(PHYSFS_sint32 val);
/**
* \fn PHYSFS_uint32 PHYSFS_swapULE32(PHYSFS_uint32 val)
* \brief Swap littleendian unsigned 32 to platform's native byte order.
*
* Take a 32-bit unsigned value in littleendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_uint32 PHYSFS_swapULE32(PHYSFS_uint32 val);
/**
* \fn PHYSFS_sint64 PHYSFS_swapSLE64(PHYSFS_sint64 val)
* \brief Swap littleendian signed 64 to platform's native byte order.
*
* Take a 64-bit signed value in littleendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*
* \warning Remember, PHYSFS_sint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_swapSLE64(PHYSFS_sint64 val);
/**
* \fn PHYSFS_uint64 PHYSFS_swapULE64(PHYSFS_uint64 val)
* \brief Swap littleendian unsigned 64 to platform's native byte order.
*
* Take a 64-bit unsigned value in littleendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*
* \warning Remember, PHYSFS_uint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL PHYSFS_uint64 PHYSFS_swapULE64(PHYSFS_uint64 val);
/**
* \fn PHYSFS_sint16 PHYSFS_swapSBE16(PHYSFS_sint16 val)
* \brief Swap bigendian signed 16 to platform's native byte order.
*
* Take a 16-bit signed value in bigendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_sint16 PHYSFS_swapSBE16(PHYSFS_sint16 val);
/**
* \fn PHYSFS_uint16 PHYSFS_swapUBE16(PHYSFS_uint16 val)
* \brief Swap bigendian unsigned 16 to platform's native byte order.
*
* Take a 16-bit unsigned value in bigendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_uint16 PHYSFS_swapUBE16(PHYSFS_uint16 val);
/**
* \fn PHYSFS_sint32 PHYSFS_swapSBE32(PHYSFS_sint32 val)
* \brief Swap bigendian signed 32 to platform's native byte order.
*
* Take a 32-bit signed value in bigendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_sint32 PHYSFS_swapSBE32(PHYSFS_sint32 val);
/**
* \fn PHYSFS_uint32 PHYSFS_swapUBE32(PHYSFS_uint32 val)
* \brief Swap bigendian unsigned 32 to platform's native byte order.
*
* Take a 32-bit unsigned value in bigendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*/
PHYSFS_DECL PHYSFS_uint32 PHYSFS_swapUBE32(PHYSFS_uint32 val);
/**
* \fn PHYSFS_sint64 PHYSFS_swapSBE64(PHYSFS_sint64 val)
* \brief Swap bigendian signed 64 to platform's native byte order.
*
* Take a 64-bit signed value in bigendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*
* \warning Remember, PHYSFS_sint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_swapSBE64(PHYSFS_sint64 val);
/**
* \fn PHYSFS_uint64 PHYSFS_swapUBE64(PHYSFS_uint64 val)
* \brief Swap bigendian unsigned 64 to platform's native byte order.
*
* Take a 64-bit unsigned value in bigendian format and convert it to
* the platform's native byte order.
*
* \param val value to convert
* \return converted value.
*
* \warning Remember, PHYSFS_uint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL PHYSFS_uint64 PHYSFS_swapUBE64(PHYSFS_uint64 val);
/**
* \fn int PHYSFS_readSLE16(PHYSFS_File *file, PHYSFS_sint16 *val)
* \brief Read and convert a signed 16-bit littleendian value.
*
* Convenience function. Read a signed 16-bit littleendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_readSLE16(PHYSFS_File *file, PHYSFS_sint16 *val);
/**
* \fn int PHYSFS_readULE16(PHYSFS_File *file, PHYSFS_uint16 *val)
* \brief Read and convert an unsigned 16-bit littleendian value.
*
* Convenience function. Read an unsigned 16-bit littleendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
*/
PHYSFS_DECL int PHYSFS_readULE16(PHYSFS_File *file, PHYSFS_uint16 *val);
/**
* \fn int PHYSFS_readSBE16(PHYSFS_File *file, PHYSFS_sint16 *val)
* \brief Read and convert a signed 16-bit bigendian value.
*
* Convenience function. Read a signed 16-bit bigendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_readSBE16(PHYSFS_File *file, PHYSFS_sint16 *val);
/**
* \fn int PHYSFS_readUBE16(PHYSFS_File *file, PHYSFS_uint16 *val)
* \brief Read and convert an unsigned 16-bit bigendian value.
*
* Convenience function. Read an unsigned 16-bit bigendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
*/
PHYSFS_DECL int PHYSFS_readUBE16(PHYSFS_File *file, PHYSFS_uint16 *val);
/**
* \fn int PHYSFS_readSLE32(PHYSFS_File *file, PHYSFS_sint32 *val)
* \brief Read and convert a signed 32-bit littleendian value.
*
* Convenience function. Read a signed 32-bit littleendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_readSLE32(PHYSFS_File *file, PHYSFS_sint32 *val);
/**
* \fn int PHYSFS_readULE32(PHYSFS_File *file, PHYSFS_uint32 *val)
* \brief Read and convert an unsigned 32-bit littleendian value.
*
* Convenience function. Read an unsigned 32-bit littleendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
*/
PHYSFS_DECL int PHYSFS_readULE32(PHYSFS_File *file, PHYSFS_uint32 *val);
/**
* \fn int PHYSFS_readSBE32(PHYSFS_File *file, PHYSFS_sint32 *val)
* \brief Read and convert a signed 32-bit bigendian value.
*
* Convenience function. Read a signed 32-bit bigendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_readSBE32(PHYSFS_File *file, PHYSFS_sint32 *val);
/**
* \fn int PHYSFS_readUBE32(PHYSFS_File *file, PHYSFS_uint32 *val)
* \brief Read and convert an unsigned 32-bit bigendian value.
*
* Convenience function. Read an unsigned 32-bit bigendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
*/
PHYSFS_DECL int PHYSFS_readUBE32(PHYSFS_File *file, PHYSFS_uint32 *val);
/**
* \fn int PHYSFS_readSLE64(PHYSFS_File *file, PHYSFS_sint64 *val)
* \brief Read and convert a signed 64-bit littleendian value.
*
* Convenience function. Read a signed 64-bit littleendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_sint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_readSLE64(PHYSFS_File *file, PHYSFS_sint64 *val);
/**
* \fn int PHYSFS_readULE64(PHYSFS_File *file, PHYSFS_uint64 *val)
* \brief Read and convert an unsigned 64-bit littleendian value.
*
* Convenience function. Read an unsigned 64-bit littleendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_uint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_readULE64(PHYSFS_File *file, PHYSFS_uint64 *val);
/**
* \fn int PHYSFS_readSBE64(PHYSFS_File *file, PHYSFS_sint64 *val)
* \brief Read and convert a signed 64-bit bigendian value.
*
* Convenience function. Read a signed 64-bit bigendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_sint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_readSBE64(PHYSFS_File *file, PHYSFS_sint64 *val);
/**
* \fn int PHYSFS_readUBE64(PHYSFS_File *file, PHYSFS_uint64 *val)
* \brief Read and convert an unsigned 64-bit bigendian value.
*
* Convenience function. Read an unsigned 64-bit bigendian value from a
* file and convert it to the platform's native byte order.
*
* \param file PhysicsFS file handle from which to read.
* \param val pointer to where value should be stored.
* \return zero on failure, non-zero on success. If successful, (*val) will
* store the result. On failure, you can find out what went wrong
* from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_uint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_readUBE64(PHYSFS_File *file, PHYSFS_uint64 *val);
/**
* \fn int PHYSFS_writeSLE16(PHYSFS_File *file, PHYSFS_sint16 val)
* \brief Convert and write a signed 16-bit littleendian value.
*
* Convenience function. Convert a signed 16-bit value from the platform's
* native byte order to littleendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeSLE16(PHYSFS_File *file, PHYSFS_sint16 val);
/**
* \fn int PHYSFS_writeULE16(PHYSFS_File *file, PHYSFS_uint16 val)
* \brief Convert and write an unsigned 16-bit littleendian value.
*
* Convenience function. Convert an unsigned 16-bit value from the platform's
* native byte order to littleendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeULE16(PHYSFS_File *file, PHYSFS_uint16 val);
/**
* \fn int PHYSFS_writeSBE16(PHYSFS_File *file, PHYSFS_sint16 val)
* \brief Convert and write a signed 16-bit bigendian value.
*
* Convenience function. Convert a signed 16-bit value from the platform's
* native byte order to bigendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeSBE16(PHYSFS_File *file, PHYSFS_sint16 val);
/**
* \fn int PHYSFS_writeUBE16(PHYSFS_File *file, PHYSFS_uint16 val)
* \brief Convert and write an unsigned 16-bit bigendian value.
*
* Convenience function. Convert an unsigned 16-bit value from the platform's
* native byte order to bigendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeUBE16(PHYSFS_File *file, PHYSFS_uint16 val);
/**
* \fn int PHYSFS_writeSLE32(PHYSFS_File *file, PHYSFS_sint32 val)
* \brief Convert and write a signed 32-bit littleendian value.
*
* Convenience function. Convert a signed 32-bit value from the platform's
* native byte order to littleendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeSLE32(PHYSFS_File *file, PHYSFS_sint32 val);
/**
* \fn int PHYSFS_writeULE32(PHYSFS_File *file, PHYSFS_uint32 val)
* \brief Convert and write an unsigned 32-bit littleendian value.
*
* Convenience function. Convert an unsigned 32-bit value from the platform's
* native byte order to littleendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeULE32(PHYSFS_File *file, PHYSFS_uint32 val);
/**
* \fn int PHYSFS_writeSBE32(PHYSFS_File *file, PHYSFS_sint32 val)
* \brief Convert and write a signed 32-bit bigendian value.
*
* Convenience function. Convert a signed 32-bit value from the platform's
* native byte order to bigendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeSBE32(PHYSFS_File *file, PHYSFS_sint32 val);
/**
* \fn int PHYSFS_writeUBE32(PHYSFS_File *file, PHYSFS_uint32 val)
* \brief Convert and write an unsigned 32-bit bigendian value.
*
* Convenience function. Convert an unsigned 32-bit value from the platform's
* native byte order to bigendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*/
PHYSFS_DECL int PHYSFS_writeUBE32(PHYSFS_File *file, PHYSFS_uint32 val);
/**
* \fn int PHYSFS_writeSLE64(PHYSFS_File *file, PHYSFS_sint64 val)
* \brief Convert and write a signed 64-bit littleendian value.
*
* Convenience function. Convert a signed 64-bit value from the platform's
* native byte order to littleendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_sint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_writeSLE64(PHYSFS_File *file, PHYSFS_sint64 val);
/**
* \fn int PHYSFS_writeULE64(PHYSFS_File *file, PHYSFS_uint64 val)
* \brief Convert and write an unsigned 64-bit littleendian value.
*
* Convenience function. Convert an unsigned 64-bit value from the platform's
* native byte order to littleendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_uint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_writeULE64(PHYSFS_File *file, PHYSFS_uint64 val);
/**
* \fn int PHYSFS_writeSBE64(PHYSFS_File *file, PHYSFS_sint64 val)
* \brief Convert and write a signed 64-bit bigending value.
*
* Convenience function. Convert a signed 64-bit value from the platform's
* native byte order to bigendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_sint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_writeSBE64(PHYSFS_File *file, PHYSFS_sint64 val);
/**
* \fn int PHYSFS_writeUBE64(PHYSFS_File *file, PHYSFS_uint64 val)
* \brief Convert and write an unsigned 64-bit bigendian value.
*
* Convenience function. Convert an unsigned 64-bit value from the platform's
* native byte order to bigendian and write it to a file.
*
* \param file PhysicsFS file handle to which to write.
* \param val Value to convert and write.
* \return zero on failure, non-zero on success. On failure, you can
* find out what went wrong from PHYSFS_getLastErrorCode().
*
* \warning Remember, PHYSFS_uint64 is only 32 bits on platforms without
* any sort of 64-bit support.
*/
PHYSFS_DECL int PHYSFS_writeUBE64(PHYSFS_File *file, PHYSFS_uint64 val);
/* Everything above this line is part of the PhysicsFS 1.0 API. */
/**
* \fn int PHYSFS_isInit(void)
* \brief Determine if the PhysicsFS library is initialized.
*
* Once PHYSFS_init() returns successfully, this will return non-zero.
* Before a successful PHYSFS_init() and after PHYSFS_deinit() returns
* successfully, this will return zero. This function is safe to call at
* any time.
*
* \return non-zero if library is initialized, zero if library is not.
*
* \sa PHYSFS_init
* \sa PHYSFS_deinit
*/
PHYSFS_DECL int PHYSFS_isInit(void);
/**
* \fn int PHYSFS_symbolicLinksPermitted(void)
* \brief Determine if the symbolic links are permitted.
*
* This reports the setting from the last call to PHYSFS_permitSymbolicLinks().
* If PHYSFS_permitSymbolicLinks() hasn't been called since the library was
* last initialized, symbolic links are implicitly disabled.
*
* \return non-zero if symlinks are permitted, zero if not.
*
* \sa PHYSFS_permitSymbolicLinks
*/
PHYSFS_DECL int PHYSFS_symbolicLinksPermitted(void);
/**
* \struct PHYSFS_Allocator
* \brief PhysicsFS allocation function pointers.
*
* (This is for limited, hardcore use. If you don't immediately see a need
* for it, you can probably ignore this forever.)
*
* You create one of these structures for use with PHYSFS_setAllocator.
* Allocators are assumed to be reentrant by the caller; please mutex
* accordingly.
*
* Allocations are always discussed in 64-bits, for future expansion...we're
* on the cusp of a 64-bit transition, and we'll probably be allocating 6
* gigabytes like it's nothing sooner or later, and I don't want to change
* this again at that point. If you're on a 32-bit platform and have to
* downcast, it's okay to return NULL if the allocation is greater than
* 4 gigabytes, since you'd have to do so anyhow.
*
* \sa PHYSFS_setAllocator
*/
typedef struct PHYSFS_Allocator
{
int (*Init)(void); /**< Initialize. Can be NULL. Zero on failure. */
void (*Deinit)(void); /**< Deinitialize your allocator. Can be NULL. */
void *(*Malloc)(PHYSFS_uint64); /**< Allocate like malloc(). */
void *(*Realloc)(void *, PHYSFS_uint64); /**< Reallocate like realloc(). */
void (*Free)(void *); /**< Free memory from Malloc or Realloc. */
} PHYSFS_Allocator;
/**
* \fn int PHYSFS_setAllocator(const PHYSFS_Allocator *allocator)
* \brief Hook your own allocation routines into PhysicsFS.
*
* (This is for limited, hardcore use. If you don't immediately see a need
* for it, you can probably ignore this forever.)
*
* By default, PhysicsFS will use whatever is reasonable for a platform
* to manage dynamic memory (usually ANSI C malloc/realloc/free, but
* some platforms might use something else), but in some uncommon cases, the
* app might want more control over the library's memory management. This
* lets you redirect PhysicsFS to use your own allocation routines instead.
* You can only call this function before PHYSFS_init(); if the library is
* initialized, it'll reject your efforts to change the allocator mid-stream.
* You may call this function after PHYSFS_deinit() if you are willing to
* shut down the library and restart it with a new allocator; this is a safe
* and supported operation. The allocator remains intact between deinit/init
* calls. If you want to return to the platform's default allocator, pass a
* NULL in here.
*
* If you aren't immediately sure what to do with this function, you can
* safely ignore it altogether.
*
* \param allocator Structure containing your allocator's entry points.
* \return zero on failure, non-zero on success. This call only fails
* when used between PHYSFS_init() and PHYSFS_deinit() calls.
*/
PHYSFS_DECL int PHYSFS_setAllocator(const PHYSFS_Allocator *allocator);
/**
* \fn int PHYSFS_mount(const char *newDir, const char *mountPoint, int appendToPath)
* \brief Add an archive or directory to the search path.
*
* If this is a duplicate, the entry is not added again, even though the
* function succeeds. You may not add the same archive to two different
* mountpoints: duplicate checking is done against the archive and not the
* mountpoint.
*
* When you mount an archive, it is added to a virtual file system...all files
* in all of the archives are interpolated into a single hierachical file
* tree. Two archives mounted at the same place (or an archive with files
* overlapping another mountpoint) may have overlapping files: in such a case,
* the file earliest in the search path is selected, and the other files are
* inaccessible to the application. This allows archives to be used to
* override previous revisions; you can use the mounting mechanism to place
* archives at a specific point in the file tree and prevent overlap; this
* is useful for downloadable mods that might trample over application data
* or each other, for example.
*
* The mountpoint does not need to exist prior to mounting, which is different
* than those familiar with the Unix concept of "mounting" may expect.
* As well, more than one archive can be mounted to the same mountpoint, or
* mountpoints and archive contents can overlap...the interpolation mechanism
* still functions as usual.
*
* Specifying a symbolic link to an archive or directory is allowed here,
* regardless of the state of PHYSFS_permitSymbolicLinks(). That function
* only deals with symlinks inside the mounted directory or archive.
*
* \param newDir directory or archive to add to the path, in
* platform-dependent notation.
* \param mountPoint Location in the interpolated tree that this archive
* will be "mounted", in platform-independent notation.
* NULL or "" is equivalent to "/".
* \param appendToPath nonzero to append to search path, zero to prepend.
* \return nonzero if added to path, zero on failure (bogus archive, dir
* missing, etc). Use PHYSFS_getLastErrorCode() to obtain
* the specific error.
*
* \sa PHYSFS_removeFromSearchPath
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_getMountPoint
* \sa PHYSFS_mountIo
*/
PHYSFS_DECL int PHYSFS_mount(const char *newDir,
const char *mountPoint,
int appendToPath);
/**
* \fn int PHYSFS_getMountPoint(const char *dir)
* \brief Determine a mounted archive's mountpoint.
*
* You give this function the name of an archive or dir you successfully
* added to the search path, and it reports the location in the interpolated
* tree where it is mounted. Files mounted with a NULL mountpoint or through
* PHYSFS_addToSearchPath() will report "/". The return value is READ ONLY
* and valid until the archive is removed from the search path.
*
* \param dir directory or archive previously added to the path, in
* platform-dependent notation. This must match the string
* used when adding, even if your string would also reference
* the same file with a different string of characters.
* \return READ-ONLY string of mount point if added to path, NULL on failure
* (bogus archive, etc). Use PHYSFS_getLastErrorCode() to obtain the
* specific error.
*
* \sa PHYSFS_removeFromSearchPath
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_getMountPoint
*/
PHYSFS_DECL const char *PHYSFS_getMountPoint(const char *dir);
/**
* \typedef PHYSFS_StringCallback
* \brief Function signature for callbacks that report strings.
*
* These are used to report a list of strings to an original caller, one
* string per callback. All strings are UTF-8 encoded. Functions should not
* try to modify or free the string's memory.
*
* These callbacks are used, starting in PhysicsFS 1.1, as an alternative to
* functions that would return lists that need to be cleaned up with
* PHYSFS_freeList(). The callback means that the library doesn't need to
* allocate an entire list and all the strings up front.
*
* Be aware that promises data ordering in the list versions are not
* necessarily so in the callback versions. Check the documentation on
* specific APIs, but strings may not be sorted as you expect.
*
* \param data User-defined data pointer, passed through from the API
* that eventually called the callback.
* \param str The string data about which the callback is meant to inform.
*
* \sa PHYSFS_getCdRomDirsCallback
* \sa PHYSFS_getSearchPathCallback
*/
typedef void (*PHYSFS_StringCallback)(void *data, const char *str);
/**
* \typedef PHYSFS_EnumFilesCallback
* \brief Function signature for callbacks that enumerate files.
*
* \warning As of PhysicsFS 2.1, Use PHYSFS_EnumerateCallback with
* PHYSFS_enumerate() instead; it gives you more control over the process.
*
* These are used to report a list of directory entries to an original caller,
* one file/dir/symlink per callback. All strings are UTF-8 encoded.
* Functions should not try to modify or free any string's memory.
*
* These callbacks are used, starting in PhysicsFS 1.1, as an alternative to
* functions that would return lists that need to be cleaned up with
* PHYSFS_freeList(). The callback means that the library doesn't need to
* allocate an entire list and all the strings up front.
*
* Be aware that promised data ordering in the list versions are not
* necessarily so in the callback versions. Check the documentation on
* specific APIs, but strings may not be sorted as you expect and you might
* get duplicate strings.
*
* \param data User-defined data pointer, passed through from the API
* that eventually called the callback.
* \param origdir A string containing the full path, in platform-independent
* notation, of the directory containing this file. In most
* cases, this is the directory on which you requested
* enumeration, passed in the callback for your convenience.
* \param fname The filename that is being enumerated. It may not be in
* alphabetical order compared to other callbacks that have
* fired, and it will not contain the full path. You can
* recreate the fullpath with $origdir/$fname ... The file
* can be a subdirectory, a file, a symlink, etc.
*
* \sa PHYSFS_enumerateFilesCallback
*/
typedef void (*PHYSFS_EnumFilesCallback)(void *data, const char *origdir,
const char *fname);
/**
* \fn void PHYSFS_getCdRomDirsCallback(PHYSFS_StringCallback c, void *d)
* \brief Enumerate CD-ROM directories, using an application-defined callback.
*
* Internally, PHYSFS_getCdRomDirs() just calls this function and then builds
* a list before returning to the application, so functionality is identical
* except for how the information is represented to the application.
*
* Unlike PHYSFS_getCdRomDirs(), this function does not return an array.
* Rather, it calls a function specified by the application once per
* detected disc:
*
* \code
*
* static void foundDisc(void *data, const char *cddir)
* {
* printf("cdrom dir [%s] is available.\n", cddir);
* }
*
* // ...
* PHYSFS_getCdRomDirsCallback(foundDisc, NULL);
* \endcode
*
* This call may block while drives spin up. Be forewarned.
*
* \param c Callback function to notify about detected drives.
* \param d Application-defined data passed to callback. Can be NULL.
*
* \sa PHYSFS_StringCallback
* \sa PHYSFS_getCdRomDirs
*/
PHYSFS_DECL void PHYSFS_getCdRomDirsCallback(PHYSFS_StringCallback c, void *d);
/**
* \fn void PHYSFS_getSearchPathCallback(PHYSFS_StringCallback c, void *d)
* \brief Enumerate the search path, using an application-defined callback.
*
* Internally, PHYSFS_getSearchPath() just calls this function and then builds
* a list before returning to the application, so functionality is identical
* except for how the information is represented to the application.
*
* Unlike PHYSFS_getSearchPath(), this function does not return an array.
* Rather, it calls a function specified by the application once per
* element of the search path:
*
* \code
*
* static void printSearchPath(void *data, const char *pathItem)
* {
* printf("[%s] is in the search path.\n", pathItem);
* }
*
* // ...
* PHYSFS_getSearchPathCallback(printSearchPath, NULL);
* \endcode
*
* Elements of the search path are reported in order search priority, so the
* first archive/dir that would be examined when looking for a file is the
* first element passed through the callback.
*
* \param c Callback function to notify about search path elements.
* \param d Application-defined data passed to callback. Can be NULL.
*
* \sa PHYSFS_StringCallback
* \sa PHYSFS_getSearchPath
*/
PHYSFS_DECL void PHYSFS_getSearchPathCallback(PHYSFS_StringCallback c, void *d);
/**
* \fn void PHYSFS_enumerateFilesCallback(const char *dir, PHYSFS_EnumFilesCallback c, void *d)
* \brief Get a file listing of a search path's directory, using an application-defined callback.
*
* \deprecated As of PhysicsFS 2.1, use PHYSFS_enumerate() instead. This
* function has no way to report errors (or to have the callback signal an
* error or request a stop), so if data will be lost, your callback has no
* way to direct the process, and your calling app has no way to know.
*
* As of PhysicsFS 2.1, this function just wraps PHYSFS_enumerate() and
* ignores errors. Consider using PHYSFS_enumerate() or
* PHYSFS_enumerateFiles() instead.
*
* \sa PHYSFS_enumerate
* \sa PHYSFS_enumerateFiles
* \sa PHYSFS_EnumFilesCallback
*/
PHYSFS_DECL void PHYSFS_enumerateFilesCallback(const char *dir,
PHYSFS_EnumFilesCallback c,
void *d) PHYSFS_DEPRECATED;
/**
* \fn void PHYSFS_utf8FromUcs4(const PHYSFS_uint32 *src, char *dst, PHYSFS_uint64 len)
* \brief Convert a UCS-4 string to a UTF-8 string.
*
* \warning This function will not report an error if there are invalid UCS-4
* values in the source string. It will replace them with a '?'
* character and continue on.
*
* UCS-4 (aka UTF-32) strings are 32-bits per character: \c wchar_t on Unix.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is the same size as the source buffer. UTF-8
* never uses more than 32-bits per character, so while it may shrink a UCS-4
* string, it will never expand it.
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UTF-8
* sequence at the end. If the buffer length is 0, this function does nothing.
*
* \param src Null-terminated source string in UCS-4 format.
* \param dst Buffer to store converted UTF-8 string.
* \param len Size, in bytes, of destination buffer.
*/
PHYSFS_DECL void PHYSFS_utf8FromUcs4(const PHYSFS_uint32 *src, char *dst,
PHYSFS_uint64 len);
/**
* \fn void PHYSFS_utf8ToUcs4(const char *src, PHYSFS_uint32 *dst, PHYSFS_uint64 len)
* \brief Convert a UTF-8 string to a UCS-4 string.
*
* \warning This function will not report an error if there are invalid UTF-8
* sequences in the source string. It will replace them with a '?'
* character and continue on.
*
* UCS-4 (aka UTF-32) strings are 32-bits per character: \c wchar_t on Unix.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is four times the size of the source buffer.
* UTF-8 uses from one to four bytes per character, but UCS-4 always uses
* four, so an entirely low-ASCII string will quadruple in size!
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UCS-4
* sequence at the end. If the buffer length is 0, this function does nothing.
*
* \param src Null-terminated source string in UTF-8 format.
* \param dst Buffer to store converted UCS-4 string.
* \param len Size, in bytes, of destination buffer.
*/
PHYSFS_DECL void PHYSFS_utf8ToUcs4(const char *src, PHYSFS_uint32 *dst,
PHYSFS_uint64 len);
/**
* \fn void PHYSFS_utf8FromUcs2(const PHYSFS_uint16 *src, char *dst, PHYSFS_uint64 len)
* \brief Convert a UCS-2 string to a UTF-8 string.
*
* \warning you almost certainly should use PHYSFS_utf8FromUtf16(), which
* became available in PhysicsFS 2.1, unless you know what you're doing.
*
* \warning This function will not report an error if there are invalid UCS-2
* values in the source string. It will replace them with a '?'
* character and continue on.
*
* UCS-2 strings are 16-bits per character: \c TCHAR on Windows, when building
* with Unicode support. Please note that modern versions of Windows use
* UTF-16, which is an extended form of UCS-2, and not UCS-2 itself. You
* almost certainly want PHYSFS_utf8FromUtf16() instead.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is double the size of the source buffer.
* UTF-8 never uses more than 32-bits per character, so while it may shrink
* a UCS-2 string, it may also expand it.
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UTF-8
* sequence at the end. If the buffer length is 0, this function does nothing.
*
* \param src Null-terminated source string in UCS-2 format.
* \param dst Buffer to store converted UTF-8 string.
* \param len Size, in bytes, of destination buffer.
*
* \sa PHYSFS_utf8FromUtf16
*/
PHYSFS_DECL void PHYSFS_utf8FromUcs2(const PHYSFS_uint16 *src, char *dst,
PHYSFS_uint64 len);
/**
* \fn PHYSFS_utf8ToUcs2(const char *src, PHYSFS_uint16 *dst, PHYSFS_uint64 len)
* \brief Convert a UTF-8 string to a UCS-2 string.
*
* \warning you almost certainly should use PHYSFS_utf8ToUtf16(), which
* became available in PhysicsFS 2.1, unless you know what you're doing.
*
* \warning This function will not report an error if there are invalid UTF-8
* sequences in the source string. It will replace them with a '?'
* character and continue on.
*
* UCS-2 strings are 16-bits per character: \c TCHAR on Windows, when building
* with Unicode support. Please note that modern versions of Windows use
* UTF-16, which is an extended form of UCS-2, and not UCS-2 itself. You
* almost certainly want PHYSFS_utf8ToUtf16() instead, but you need to
* understand how that changes things, too.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is double the size of the source buffer.
* UTF-8 uses from one to four bytes per character, but UCS-2 always uses
* two, so an entirely low-ASCII string will double in size!
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UCS-2
* sequence at the end. If the buffer length is 0, this function does nothing.
*
* \param src Null-terminated source string in UTF-8 format.
* \param dst Buffer to store converted UCS-2 string.
* \param len Size, in bytes, of destination buffer.
*
* \sa PHYSFS_utf8ToUtf16
*/
PHYSFS_DECL void PHYSFS_utf8ToUcs2(const char *src, PHYSFS_uint16 *dst,
PHYSFS_uint64 len);
/**
* \fn void PHYSFS_utf8FromLatin1(const char *src, char *dst, PHYSFS_uint64 len)
* \brief Convert a UTF-8 string to a Latin1 string.
*
* Latin1 strings are 8-bits per character: a popular "high ASCII" encoding.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is double the size of the source buffer.
* UTF-8 expands latin1 codepoints over 127 from 1 to 2 bytes, so the string
* may grow in some cases.
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UTF-8
* sequence at the end. If the buffer length is 0, this function does nothing.
*
* Please note that we do not supply a UTF-8 to Latin1 converter, since Latin1
* can't express most Unicode codepoints. It's a legacy encoding; you should
* be converting away from it at all times.
*
* \param src Null-terminated source string in Latin1 format.
* \param dst Buffer to store converted UTF-8 string.
* \param len Size, in bytes, of destination buffer.
*/
PHYSFS_DECL void PHYSFS_utf8FromLatin1(const char *src, char *dst,
PHYSFS_uint64 len);
/* Everything above this line is part of the PhysicsFS 2.0 API. */
/**
* \fn int PHYSFS_caseFold(const PHYSFS_uint32 from, PHYSFS_uint32 *to)
* \brief "Fold" a Unicode codepoint to a lowercase equivalent.
*
* (This is for limited, hardcore use. If you don't immediately see a need
* for it, you can probably ignore this forever.)
*
* This will convert a Unicode codepoint into its lowercase equivalent.
* Bogus codepoints and codepoints without a lowercase equivalent will
* be returned unconverted.
*
* Note that you might get multiple codepoints in return! The German Eszett,
* for example, will fold down to two lowercase latin 's' codepoints. The
* theory is that if you fold two strings, one with an Eszett and one with
* "SS" down, they will match.
*
* \warning Anyone that is a student of Unicode knows about the "Turkish I"
* problem. This API does not handle it. Assume this one letter
* in all of Unicode will definitely fold sort of incorrectly. If
* you don't know what this is about, you can probably ignore this
* problem for most of the planet, but perfection is impossible.
*
* \param from The codepoint to fold.
* \param to Buffer to store the folded codepoint values into. This should
* point to space for at least 3 PHYSFS_uint32 slots.
* \return The number of codepoints the folding produced. Between 1 and 3.
*/
PHYSFS_DECL int PHYSFS_caseFold(const PHYSFS_uint32 from, PHYSFS_uint32 *to);
/**
* \fn int PHYSFS_utf8stricmp(const char *str1, const char *str2)
* \brief Case-insensitive compare of two UTF-8 strings.
*
* This is a strcasecmp/stricmp replacement that expects both strings
* to be in UTF-8 encoding. It will do "case folding" to decide if the
* Unicode codepoints in the strings match.
*
* If both strings are exclusively low-ASCII characters, this will do the
* right thing, as that is also valid UTF-8. If there are any high-ASCII
* chars, this will not do what you expect!
*
* It will report which string is "greater than" the other, but be aware that
* this doesn't necessarily mean anything: 'a' may be "less than" 'b', but
* a Japanese kuten has no meaningful alphabetically relationship to
* a Greek lambda, but being able to assign a reliable "value" makes sorting
* algorithms possible, if not entirely sane. Most cases should treat the
* return value as "equal" or "not equal".
*
* Like stricmp, this expects both strings to be NULL-terminated.
*
* \param str1 First string to compare.
* \param str2 Second string to compare.
* \return -1 if str1 is "less than" str2, 1 if "greater than", 0 if equal.
*/
PHYSFS_DECL int PHYSFS_utf8stricmp(const char *str1, const char *str2);
/**
* \fn int PHYSFS_utf16stricmp(const PHYSFS_uint16 *str1, const PHYSFS_uint16 *str2)
* \brief Case-insensitive compare of two UTF-16 strings.
*
* This is a strcasecmp/stricmp replacement that expects both strings
* to be in UTF-16 encoding. It will do "case folding" to decide if the
* Unicode codepoints in the strings match.
*
* It will report which string is "greater than" the other, but be aware that
* this doesn't necessarily mean anything: 'a' may be "less than" 'b', but
* a Japanese kuten has no meaningful alphabetically relationship to
* a Greek lambda, but being able to assign a reliable "value" makes sorting
* algorithms possible, if not entirely sane. Most cases should treat the
* return value as "equal" or "not equal".
*
* Like stricmp, this expects both strings to be NULL-terminated.
*
* \param str1 First string to compare.
* \param str2 Second string to compare.
* \return -1 if str1 is "less than" str2, 1 if "greater than", 0 if equal.
*/
PHYSFS_DECL int PHYSFS_utf16stricmp(const PHYSFS_uint16 *str1,
const PHYSFS_uint16 *str2);
/**
* \fn int PHYSFS_ucs4stricmp(const PHYSFS_uint32 *str1, const PHYSFS_uint32 *str2)
* \brief Case-insensitive compare of two UCS-4 strings.
*
* This is a strcasecmp/stricmp replacement that expects both strings
* to be in UCS-4 (aka UTF-32) encoding. It will do "case folding" to decide
* if the Unicode codepoints in the strings match.
*
* It will report which string is "greater than" the other, but be aware that
* this doesn't necessarily mean anything: 'a' may be "less than" 'b', but
* a Japanese kuten has no meaningful alphabetically relationship to
* a Greek lambda, but being able to assign a reliable "value" makes sorting
* algorithms possible, if not entirely sane. Most cases should treat the
* return value as "equal" or "not equal".
*
* Like stricmp, this expects both strings to be NULL-terminated.
*
* \param str1 First string to compare.
* \param str2 Second string to compare.
* \return -1 if str1 is "less than" str2, 1 if "greater than", 0 if equal.
*/
PHYSFS_DECL int PHYSFS_ucs4stricmp(const PHYSFS_uint32 *str1,
const PHYSFS_uint32 *str2);
/**
* \typedef PHYSFS_EnumerateCallback
* \brief Possible return values from PHYSFS_EnumerateCallback.
*
* These values dictate if an enumeration callback should continue to fire,
* or stop (and why it is stopping).
*
* \sa PHYSFS_EnumerateCallback
* \sa PHYSFS_enumerate
*/
typedef enum PHYSFS_EnumerateCallbackResult
{
PHYSFS_ENUM_ERROR = -1, /**< Stop enumerating, report error to app. */
PHYSFS_ENUM_STOP = 0, /**< Stop enumerating, report success to app. */
PHYSFS_ENUM_OK = 1 /**< Keep enumerating, no problems */
} PHYSFS_EnumerateCallbackResult;
/**
* \typedef PHYSFS_EnumerateCallback
* \brief Function signature for callbacks that enumerate and return results.
*
* This is the same thing as PHYSFS_EnumFilesCallback from PhysicsFS 2.0,
* except it can return a result from the callback: namely: if you're looking
* for something specific, once you find it, you can tell PhysicsFS to stop
* enumerating further. This is used with PHYSFS_enumerate(), which we
* hopefully got right this time. :)
*
* \param data User-defined data pointer, passed through from the API
* that eventually called the callback.
* \param origdir A string containing the full path, in platform-independent
* notation, of the directory containing this file. In most
* cases, this is the directory on which you requested
* enumeration, passed in the callback for your convenience.
* \param fname The filename that is being enumerated. It may not be in
* alphabetical order compared to other callbacks that have
* fired, and it will not contain the full path. You can
* recreate the fullpath with $origdir/$fname ... The file
* can be a subdirectory, a file, a symlink, etc.
* \return A value from PHYSFS_EnumerateCallbackResult.
* All other values are (currently) undefined; don't use them.
*
* \sa PHYSFS_enumerate
* \sa PHYSFS_EnumerateCallbackResult
*/
typedef PHYSFS_EnumerateCallbackResult (*PHYSFS_EnumerateCallback)(void *data,
const char *origdir, const char *fname);
/**
* \fn int PHYSFS_enumerate(const char *dir, PHYSFS_EnumerateCallback c, void *d)
* \brief Get a file listing of a search path's directory, using an application-defined callback, with errors reported.
*
* Internally, PHYSFS_enumerateFiles() just calls this function and then builds
* a list before returning to the application, so functionality is identical
* except for how the information is represented to the application.
*
* Unlike PHYSFS_enumerateFiles(), this function does not return an array.
* Rather, it calls a function specified by the application once per
* element of the search path:
*
* \code
*
* static PHYSFS_EnumerateCallbackResult printDir(void *data, const char *origdir, const char *fname)
* {
* printf(" * We've got [%s] in [%s].\n", fname, origdir);
* return PHYSFS_ENUM_OK; // give me more data, please.
* }
*
* // ...
* PHYSFS_enumerate("/some/path", printDir, NULL);
* \endcode
*
* Items sent to the callback are not guaranteed to be in any order whatsoever.
* There is no sorting done at this level, and if you need that, you should
* probably use PHYSFS_enumerateFiles() instead, which guarantees
* alphabetical sorting. This form reports whatever is discovered in each
* archive before moving on to the next. Even within one archive, we can't
* guarantee what order it will discover data. <em>Any sorting you find in
* these callbacks is just pure luck. Do not rely on it.</em> As this walks
* the entire list of archives, you may receive duplicate filenames.
*
* This API and the callbacks themselves are capable of reporting errors.
* Prior to this API, callbacks had to accept every enumerated item, even if
* they were only looking for a specific thing and wanted to stop after that,
* or had a serious error and couldn't alert anyone. Furthermore, if
* PhysicsFS itself had a problem (disk error or whatnot), it couldn't report
* it to the calling app, it would just have to skip items or stop
* enumerating outright, and the caller wouldn't know it had lost some data
* along the way.
*
* Now the caller can be sure it got a complete data set, and its callback has
* control if it wants enumeration to stop early. See the documentation for
* PHYSFS_EnumerateCallback for details on how your callback should behave.
*
* \param dir Directory, in platform-independent notation, to enumerate.
* \param c Callback function to notify about search path elements.
* \param d Application-defined data passed to callback. Can be NULL.
* \return non-zero on success, zero on failure. Use
* PHYSFS_getLastErrorCode() to obtain the specific error. If the
* callback returns PHYSFS_ENUM_STOP to stop early, this will be
* considered success. Callbacks returning PHYSFS_ENUM_ERROR will
* make this function return zero and set the error code to
* PHYSFS_ERR_APP_CALLBACK.
*
* \sa PHYSFS_EnumerateCallback
* \sa PHYSFS_enumerateFiles
*/
PHYSFS_DECL int PHYSFS_enumerate(const char *dir, PHYSFS_EnumerateCallback c,
void *d);
/**
* \fn int PHYSFS_unmount(const char *oldDir)
* \brief Remove a directory or archive from the search path.
*
* This is functionally equivalent to PHYSFS_removeFromSearchPath(), but that
* function is deprecated to keep the vocabulary paired with PHYSFS_mount().
*
* This must be a (case-sensitive) match to a dir or archive already in the
* search path, specified in platform-dependent notation.
*
* This call will fail (and fail to remove from the path) if the element still
* has files open in it.
*
* \warning This function wants the path to the archive or directory that was
* mounted (the same string used for the "newDir" argument of
* PHYSFS_addToSearchPath or any of the mount functions), not the
* path where it is mounted in the tree (the "mountPoint" argument
* to any of the mount functions).
*
* \param oldDir dir/archive to remove.
* \return nonzero on success, zero on failure. Use
* PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_mount
*/
PHYSFS_DECL int PHYSFS_unmount(const char *oldDir);
/**
* \fn const PHYSFS_Allocator *PHYSFS_getAllocator(void)
* \brief Discover the current allocator.
*
* (This is for limited, hardcore use. If you don't immediately see a need
* for it, you can probably ignore this forever.)
*
* This function exposes the function pointers that make up the currently used
* allocator. This can be useful for apps that want to access PhysicsFS's
* internal, default allocation routines, as well as for external code that
* wants to share the same allocator, even if the application specified their
* own.
*
* This call is only valid between PHYSFS_init() and PHYSFS_deinit() calls;
* it will return NULL if the library isn't initialized. As we can't
* guarantee the state of the internal allocators unless the library is
* initialized, you shouldn't use any allocator returned here after a call
* to PHYSFS_deinit().
*
* Do not call the returned allocator's Init() or Deinit() methods under any
* circumstances.
*
* If you aren't immediately sure what to do with this function, you can
* safely ignore it altogether.
*
* \return Current allocator, as set by PHYSFS_setAllocator(), or PhysicsFS's
* internal, default allocator if no application defined allocator
* is currently set. Will return NULL if the library is not
* initialized.
*
* \sa PHYSFS_Allocator
* \sa PHYSFS_setAllocator
*/
PHYSFS_DECL const PHYSFS_Allocator *PHYSFS_getAllocator(void);
/**
* \enum PHYSFS_FileType
* \brief Type of a File
*
* Possible types of a file.
*
* \sa PHYSFS_stat
*/
typedef enum PHYSFS_FileType
{
PHYSFS_FILETYPE_REGULAR, /**< a normal file */
PHYSFS_FILETYPE_DIRECTORY, /**< a directory */
PHYSFS_FILETYPE_SYMLINK, /**< a symlink */
PHYSFS_FILETYPE_OTHER /**< something completely different like a device */
} PHYSFS_FileType;
/**
* \struct PHYSFS_Stat
* \brief Meta data for a file or directory
*
* Container for various meta data about a file in the virtual file system.
* PHYSFS_stat() uses this structure for returning the information. The time
* data will be either the number of seconds since the Unix epoch (midnight,
* Jan 1, 1970), or -1 if the information isn't available or applicable.
* The (filesize) field is measured in bytes.
* The (readonly) field tells you whether the archive thinks a file is
* not writable, but tends to be only an estimate (for example, your write
* dir might overlap with a .zip file, meaning you _can_ successfully open
* that path for writing, as it gets created elsewhere.
*
* \sa PHYSFS_stat
* \sa PHYSFS_FileType
*/
typedef struct PHYSFS_Stat
{
PHYSFS_sint64 filesize; /**< size in bytes, -1 for non-files and unknown */
PHYSFS_sint64 modtime; /**< last modification time */
PHYSFS_sint64 createtime; /**< like modtime, but for file creation time */
PHYSFS_sint64 accesstime; /**< like modtime, but for file access time */
PHYSFS_FileType filetype; /**< File? Directory? Symlink? */
int readonly; /**< non-zero if read only, zero if writable. */
} PHYSFS_Stat;
/**
* \fn int PHYSFS_stat(const char *fname, PHYSFS_Stat *stat)
* \brief Get various information about a directory or a file.
*
* Obtain various information about a file or directory from the meta data.
*
* This function will never follow symbolic links. If you haven't enabled
* symlinks with PHYSFS_permitSymbolicLinks(), stat'ing a symlink will be
* treated like stat'ing a non-existant file. If symlinks are enabled,
* stat'ing a symlink will give you information on the link itself and not
* what it points to.
*
* \param fname filename to check, in platform-indepedent notation.
* \param stat pointer to structure to fill in with data about (fname).
* \return non-zero on success, zero on failure. On failure, (stat)'s
* contents are undefined.
*
* \sa PHYSFS_Stat
*/
PHYSFS_DECL int PHYSFS_stat(const char *fname, PHYSFS_Stat *stat);
/**
* \fn void PHYSFS_utf8FromUtf16(const PHYSFS_uint16 *src, char *dst, PHYSFS_uint64 len)
* \brief Convert a UTF-16 string to a UTF-8 string.
*
* \warning This function will not report an error if there are invalid UTF-16
* sequences in the source string. It will replace them with a '?'
* character and continue on.
*
* UTF-16 strings are 16-bits per character (except some chars, which are
* 32-bits): \c TCHAR on Windows, when building with Unicode support. Modern
* Windows releases use UTF-16. Windows releases before 2000 used TCHAR, but
* only handled UCS-2. UTF-16 _is_ UCS-2, except for the characters that
* are 4 bytes, which aren't representable in UCS-2 at all anyhow. If you
* aren't sure, you should be using UTF-16 at this point on Windows.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is double the size of the source buffer.
* UTF-8 never uses more than 32-bits per character, so while it may shrink
* a UTF-16 string, it may also expand it.
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UTF-8
* sequence at the end. If the buffer length is 0, this function does nothing.
*
* \param src Null-terminated source string in UTF-16 format.
* \param dst Buffer to store converted UTF-8 string.
* \param len Size, in bytes, of destination buffer.
*/
PHYSFS_DECL void PHYSFS_utf8FromUtf16(const PHYSFS_uint16 *src, char *dst,
PHYSFS_uint64 len);
/**
* \fn PHYSFS_utf8ToUtf16(const char *src, PHYSFS_uint16 *dst, PHYSFS_uint64 len)
* \brief Convert a UTF-8 string to a UTF-16 string.
*
* \warning This function will not report an error if there are invalid UTF-8
* sequences in the source string. It will replace them with a '?'
* character and continue on.
*
* UTF-16 strings are 16-bits per character (except some chars, which are
* 32-bits): \c TCHAR on Windows, when building with Unicode support. Modern
* Windows releases use UTF-16. Windows releases before 2000 used TCHAR, but
* only handled UCS-2. UTF-16 _is_ UCS-2, except for the characters that
* are 4 bytes, which aren't representable in UCS-2 at all anyhow. If you
* aren't sure, you should be using UTF-16 at this point on Windows.
*
* To ensure that the destination buffer is large enough for the conversion,
* please allocate a buffer that is double the size of the source buffer.
* UTF-8 uses from one to four bytes per character, but UTF-16 always uses
* two to four, so an entirely low-ASCII string will double in size! The
* UTF-16 characters that would take four bytes also take four bytes in UTF-8,
* so you don't need to allocate 4x the space just in case: double will do.
*
* Strings that don't fit in the destination buffer will be truncated, but
* will always be null-terminated and never have an incomplete UTF-16
* surrogate pair at the end. If the buffer length is 0, this function does
* nothing.
*
* \param src Null-terminated source string in UTF-8 format.
* \param dst Buffer to store converted UTF-16 string.
* \param len Size, in bytes, of destination buffer.
*
* \sa PHYSFS_utf8ToUtf16
*/
PHYSFS_DECL void PHYSFS_utf8ToUtf16(const char *src, PHYSFS_uint16 *dst,
PHYSFS_uint64 len);
/**
* \fn PHYSFS_sint64 PHYSFS_readBytes(PHYSFS_File *handle, void *buffer, PHYSFS_uint64 len)
* \brief Read bytes from a PhysicsFS filehandle
*
* The file must be opened for reading.
*
* \param handle handle returned from PHYSFS_openRead().
* \param buffer buffer of at least (len) bytes to store read data into.
* \param len number of bytes being read from (handle).
* \return number of bytes read. This may be less than (len); this does not
* signify an error, necessarily (a short read may mean EOF).
* PHYSFS_getLastErrorCode() can shed light on the reason this might
* be < (len), as can PHYSFS_eof(). -1 if complete failure.
*
* \sa PHYSFS_eof
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_readBytes(PHYSFS_File *handle, void *buffer,
PHYSFS_uint64 len);
/**
* \fn PHYSFS_sint64 PHYSFS_writeBytes(PHYSFS_File *handle, const void *buffer, PHYSFS_uint64 len)
* \brief Write data to a PhysicsFS filehandle
*
* The file must be opened for writing.
*
* Please note that while (len) is an unsigned 64-bit integer, you are limited
* to 63 bits (9223372036854775807 bytes), so we can return a negative value
* on error. If length is greater than 0x7FFFFFFFFFFFFFFF, this function will
* immediately fail. For systems without a 64-bit datatype, you are limited
* to 31 bits (0x7FFFFFFF, or 2147483647 bytes). We trust most things won't
* need to do multiple gigabytes of i/o in one call anyhow, but why limit
* things?
*
* \param handle retval from PHYSFS_openWrite() or PHYSFS_openAppend().
* \param buffer buffer of (len) bytes to write to (handle).
* \param len number of bytes being written to (handle).
* \return number of bytes written. This may be less than (len); in the case
* of an error, the system may try to write as many bytes as possible,
* so an incomplete write might occur. PHYSFS_getLastErrorCode() can
* shed light on the reason this might be < (len). -1 if complete
* failure.
*/
PHYSFS_DECL PHYSFS_sint64 PHYSFS_writeBytes(PHYSFS_File *handle,
const void *buffer,
PHYSFS_uint64 len);
/**
* \struct PHYSFS_Io
* \brief An abstract i/o interface.
*
* \warning This is advanced, hardcore stuff. You don't need this unless you
* really know what you're doing. Most apps will not need this.
*
* Historically, PhysicsFS provided access to the physical filesystem and
* archives within that filesystem. However, sometimes you need more power
* than this. Perhaps you need to provide an archive that is entirely
* contained in RAM, or you need to bridge some other file i/o API to
* PhysicsFS, or you need to translate the bits (perhaps you have a
* a standard .zip file that's encrypted, and you need to decrypt on the fly
* for the unsuspecting zip archiver).
*
* A PHYSFS_Io is the interface that Archivers use to get archive data.
* Historically, this has mapped to file i/o to the physical filesystem, but
* as of PhysicsFS 2.1, applications can provide their own i/o implementations
* at runtime.
*
* This interface isn't necessarily a good universal fit for i/o. There are a
* few requirements of note:
*
* - They only do blocking i/o (at least, for now).
* - They need to be able to duplicate. If you have a file handle from
* fopen(), you need to be able to create a unique clone of it (so we
* have two handles to the same file that can both seek/read/etc without
* stepping on each other).
* - They need to know the size of their entire data set.
* - They need to be able to seek and rewind on demand.
*
* ...in short, you're probably not going to write an HTTP implementation.
*
* Thread safety: PHYSFS_Io implementations are not guaranteed to be thread
* safe in themselves. Under the hood where PhysicsFS uses them, the library
* provides its own locks. If you plan to use them directly from separate
* threads, you should either use mutexes to protect them, or don't use the
* same PHYSFS_Io from two threads at the same time.
*
* \sa PHYSFS_mountIo
*/
typedef struct PHYSFS_Io
{
/**
* \brief Binary compatibility information.
*
* This must be set to zero at this time. Future versions of this
* struct will increment this field, so we know what a given
* implementation supports. We'll presumably keep supporting older
* versions as we offer new features, though.
*/
PHYSFS_uint32 version;
/**
* \brief Instance data for this struct.
*
* Each instance has a pointer associated with it that can be used to
* store anything it likes. This pointer is per-instance of the stream,
* so presumably it will change when calling duplicate(). This can be
* deallocated during the destroy() method.
*/
void *opaque;
/**
* \brief Read more data.
*
* Read (len) bytes from the interface, at the current i/o position, and
* store them in (buffer). The current i/o position should move ahead
* by the number of bytes successfully read.
*
* You don't have to implement this; set it to NULL if not implemented.
* This will only be used if the file is opened for reading. If set to
* NULL, a default implementation that immediately reports failure will
* be used.
*
* \param io The i/o instance to read from.
* \param buf The buffer to store data into. It must be at least
* (len) bytes long and can't be NULL.
* \param len The number of bytes to read from the interface.
* \return number of bytes read from file, 0 on EOF, -1 if complete
* failure.
*/
PHYSFS_sint64 (*read)(struct PHYSFS_Io *io, void *buf, PHYSFS_uint64 len);
/**
* \brief Write more data.
*
* Write (len) bytes from (buffer) to the interface at the current i/o
* position. The current i/o position should move ahead by the number of
* bytes successfully written.
*
* You don't have to implement this; set it to NULL if not implemented.
* This will only be used if the file is opened for writing. If set to
* NULL, a default implementation that immediately reports failure will
* be used.
*
* You are allowed to buffer; a write can succeed here and then later
* fail when flushing. Note that PHYSFS_setBuffer() may be operating a
* level above your i/o, so you should usually not implement your
* own buffering routines.
*
* \param io The i/o instance to write to.
* \param buffer The buffer to read data from. It must be at least
* (len) bytes long and can't be NULL.
* \param len The number of bytes to read from (buffer).
* \return number of bytes written to file, -1 if complete failure.
*/
PHYSFS_sint64 (*write)(struct PHYSFS_Io *io, const void *buffer,
PHYSFS_uint64 len);
/**
* \brief Move i/o position to a given byte offset from start.
*
* This method moves the i/o position, so the next read/write will
* be of the byte at (offset) offset. Seeks past the end of file should
* be treated as an error condition.
*
* \param io The i/o instance to seek.
* \param offset The new byte offset for the i/o position.
* \return non-zero on success, zero on error.
*/
int (*seek)(struct PHYSFS_Io *io, PHYSFS_uint64 offset);
/**
* \brief Report current i/o position.
*
* Return bytes offset, or -1 if you aren't able to determine. A failure
* will almost certainly be fatal to further use of this stream, so you
* may not leave this unimplemented.
*
* \param io The i/o instance to query.
* \return The current byte offset for the i/o position, -1 if unknown.
*/
PHYSFS_sint64 (*tell)(struct PHYSFS_Io *io);
/**
* \brief Determine size of the i/o instance's dataset.
*
* Return number of bytes available in the file, or -1 if you
* aren't able to determine. A failure will almost certainly be fatal
* to further use of this stream, so you may not leave this unimplemented.
*
* \param io The i/o instance to query.
* \return Total size, in bytes, of the dataset.
*/
PHYSFS_sint64 (*length)(struct PHYSFS_Io *io);
/**
* \brief Duplicate this i/o instance.
*
* This needs to result in a full copy of this PHYSFS_Io, that can live
* completely independently. The copy needs to be able to perform all
* its operations without altering the original, including either object
* being destroyed separately (so, for example: they can't share a file
* handle; they each need their own).
*
* If you can't duplicate a handle, it's legal to return NULL, but you
* almost certainly need this functionality if you want to use this to
* PHYSFS_Io to back an archive.
*
* \param io The i/o instance to duplicate.
* \return A new value for a stream's (opaque) field, or NULL on error.
*/
struct PHYSFS_Io *(*duplicate)(struct PHYSFS_Io *io);
/**
* \brief Flush resources to media, or wherever.
*
* This is the chance to report failure for writes that had claimed
* success earlier, but still had a chance to actually fail. This method
* can be NULL if flushing isn't necessary.
*
* This function may be called before destroy(), as it can report failure
* and destroy() can not. It may be called at other times, too.
*
* \param io The i/o instance to flush.
* \return Zero on error, non-zero on success.
*/
int (*flush)(struct PHYSFS_Io *io);
/**
* \brief Cleanup and deallocate i/o instance.
*
* Free associated resources, including (opaque) if applicable.
*
* This function must always succeed: as such, it returns void. The
* system may call your flush() method before this. You may report
* failure there if necessary. This method may still be called if
* flush() fails, in which case you'll have to abandon unflushed data
* and other failing conditions and clean up.
*
* Once this method is called for a given instance, the system will assume
* it is unsafe to touch that instance again and will discard any
* references to it.
*
* \param s The i/o instance to destroy.
*/
void (*destroy)(struct PHYSFS_Io *io);
} PHYSFS_Io;
/**
* \fn int PHYSFS_mountIo(PHYSFS_Io *io, const char *newDir, const char *mountPoint, int appendToPath)
* \brief Add an archive, built on a PHYSFS_Io, to the search path.
*
* \warning Unless you have some special, low-level need, you should be using
* PHYSFS_mount() instead of this.
*
* This function operates just like PHYSFS_mount(), but takes a PHYSFS_Io
* instead of a pathname. Behind the scenes, PHYSFS_mount() calls this
* function with a physical-filesystem-based PHYSFS_Io.
*
* (newDir) must be a unique string to identify this archive. It is used
* to optimize archiver selection (if you name it XXXXX.zip, we might try
* the ZIP archiver first, for example, or directly choose an archiver that
* can only trust the data is valid by filename extension). It doesn't
* need to refer to a real file at all. If the filename extension isn't
* helpful, the system will try every archiver until one works or none
* of them do. This filename must be unique, as the system won't allow you
* to have two archives with the same name.
*
* (io) must remain until the archive is unmounted. When the archive is
* unmounted, the system will call (io)->destroy(io), which will give you
* a chance to free your resources.
*
* If this function fails, (io)->destroy(io) is not called.
*
* \param io i/o instance for archive to add to the path.
* \param newDir Filename that can represent this stream.
* \param mountPoint Location in the interpolated tree that this archive
* will be "mounted", in platform-independent notation.
* NULL or "" is equivalent to "/".
* \param appendToPath nonzero to append to search path, zero to prepend.
* \return nonzero if added to path, zero on failure (bogus archive, stream
* i/o issue, etc). Use PHYSFS_getLastErrorCode() to obtain
* the specific error.
*
* \sa PHYSFS_unmount
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_getMountPoint
*/
PHYSFS_DECL int PHYSFS_mountIo(PHYSFS_Io *io, const char *newDir,
const char *mountPoint, int appendToPath);
/**
* \fn int PHYSFS_mountMemory(const void *buf, PHYSFS_uint64 len, void (*del)(void *), const char *newDir, const char *mountPoint, int appendToPath)
* \brief Add an archive, contained in a memory buffer, to the search path.
*
* \warning Unless you have some special, low-level need, you should be using
* PHYSFS_mount() instead of this.
*
* This function operates just like PHYSFS_mount(), but takes a memory buffer
* instead of a pathname. This buffer contains all the data of the archive,
* and is used instead of a real file in the physical filesystem.
*
* (newDir) must be a unique string to identify this archive. It is used
* to optimize archiver selection (if you name it XXXXX.zip, we might try
* the ZIP archiver first, for example, or directly choose an archiver that
* can only trust the data is valid by filename extension). It doesn't
* need to refer to a real file at all. If the filename extension isn't
* helpful, the system will try every archiver until one works or none
* of them do. This filename must be unique, as the system won't allow you
* to have two archives with the same name.
*
* (ptr) must remain until the archive is unmounted. When the archive is
* unmounted, the system will call (del)(ptr), which will notify you that
* the system is done with the buffer, and give you a chance to free your
* resources. (del) can be NULL, in which case the system will make no
* attempt to free the buffer.
*
* If this function fails, (del) is not called.
*
* \param buf Address of the memory buffer containing the archive data.
* \param len Size of memory buffer, in bytes.
* \param del A callback that triggers upon unmount. Can be NULL.
* \param newDir Filename that can represent this stream.
* \param mountPoint Location in the interpolated tree that this archive
* will be "mounted", in platform-independent notation.
* NULL or "" is equivalent to "/".
* \param appendToPath nonzero to append to search path, zero to prepend.
* \return nonzero if added to path, zero on failure (bogus archive, etc).
* Use PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_unmount
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_getMountPoint
*/
PHYSFS_DECL int PHYSFS_mountMemory(const void *buf, PHYSFS_uint64 len,
void (*del)(void *), const char *newDir,
const char *mountPoint, int appendToPath);
/**
* \fn int PHYSFS_mountHandle(PHYSFS_File *file, const char *newDir, const char *mountPoint, int appendToPath)
* \brief Add an archive, contained in a PHYSFS_File handle, to the search path.
*
* \warning Unless you have some special, low-level need, you should be using
* PHYSFS_mount() instead of this.
*
* \warning Archives-in-archives may be very slow! While a PHYSFS_File can
* seek even when the data is compressed, it may do so by rewinding
* to the start and decompressing everything before the seek point.
* Normal archive usage may do a lot of seeking behind the scenes.
* As such, you might find normal archive usage extremely painful
* if mounted this way. Plan accordingly: if you, say, have a
* self-extracting .zip file, and want to mount something in it,
* compress the contents of the inner archive and make sure the outer
* .zip file doesn't compress the inner archive too.
*
* This function operates just like PHYSFS_mount(), but takes a PHYSFS_File
* handle instead of a pathname. This handle contains all the data of the
* archive, and is used instead of a real file in the physical filesystem.
* The PHYSFS_File may be backed by a real file in the physical filesystem,
* but isn't necessarily. The most popular use for this is likely to mount
* archives stored inside other archives.
*
* (newDir) must be a unique string to identify this archive. It is used
* to optimize archiver selection (if you name it XXXXX.zip, we might try
* the ZIP archiver first, for example, or directly choose an archiver that
* can only trust the data is valid by filename extension). It doesn't
* need to refer to a real file at all. If the filename extension isn't
* helpful, the system will try every archiver until one works or none
* of them do. This filename must be unique, as the system won't allow you
* to have two archives with the same name.
*
* (file) must remain until the archive is unmounted. When the archive is
* unmounted, the system will call PHYSFS_close(file). If you need this
* handle to survive, you will have to wrap this in a PHYSFS_Io and use
* PHYSFS_mountIo() instead.
*
* If this function fails, PHYSFS_close(file) is not called.
*
* \param file The PHYSFS_File handle containing archive data.
* \param newDir Filename that can represent this stream.
* \param mountPoint Location in the interpolated tree that this archive
* will be "mounted", in platform-independent notation.
* NULL or "" is equivalent to "/".
* \param appendToPath nonzero to append to search path, zero to prepend.
* \return nonzero if added to path, zero on failure (bogus archive, etc).
* Use PHYSFS_getLastErrorCode() to obtain the specific error.
*
* \sa PHYSFS_unmount
* \sa PHYSFS_getSearchPath
* \sa PHYSFS_getMountPoint
*/
PHYSFS_DECL int PHYSFS_mountHandle(PHYSFS_File *file, const char *newDir,
const char *mountPoint, int appendToPath);
/**
* \enum PHYSFS_ErrorCode
* \brief Values that represent specific causes of failure.
*
* Most of the time, you should only concern yourself with whether a given
* operation failed or not, but there may be occasions where you plan to
* handle a specific failure case gracefully, so we provide specific error
* codes.
*
* Most of these errors are a little vague, and most aren't things you can
* fix...if there's a permission error, for example, all you can really do
* is pass that information on to the user and let them figure out how to
* handle it. In most these cases, your program should only care that it
* failed to accomplish its goals, and not care specifically why.
*
* \sa PHYSFS_getLastErrorCode
* \sa PHYSFS_getErrorByCode
*/
typedef enum PHYSFS_ErrorCode
{
PHYSFS_ERR_OK, /**< Success; no error. */
PHYSFS_ERR_OTHER_ERROR, /**< Error not otherwise covered here. */
PHYSFS_ERR_OUT_OF_MEMORY, /**< Memory allocation failed. */
PHYSFS_ERR_NOT_INITIALIZED, /**< PhysicsFS is not initialized. */
PHYSFS_ERR_IS_INITIALIZED, /**< PhysicsFS is already initialized. */
PHYSFS_ERR_ARGV0_IS_NULL, /**< Needed argv[0], but it is NULL. */
PHYSFS_ERR_UNSUPPORTED, /**< Operation or feature unsupported. */
PHYSFS_ERR_PAST_EOF, /**< Attempted to access past end of file. */
PHYSFS_ERR_FILES_STILL_OPEN, /**< Files still open. */
PHYSFS_ERR_INVALID_ARGUMENT, /**< Bad parameter passed to an function. */
PHYSFS_ERR_NOT_MOUNTED, /**< Requested archive/dir not mounted. */
PHYSFS_ERR_NOT_FOUND, /**< File (or whatever) not found. */
PHYSFS_ERR_SYMLINK_FORBIDDEN,/**< Symlink seen when not permitted. */
PHYSFS_ERR_NO_WRITE_DIR, /**< No write dir has been specified. */
PHYSFS_ERR_OPEN_FOR_READING, /**< Wrote to a file opened for reading. */
PHYSFS_ERR_OPEN_FOR_WRITING, /**< Read from a file opened for writing. */
PHYSFS_ERR_NOT_A_FILE, /**< Needed a file, got a directory (etc). */
PHYSFS_ERR_READ_ONLY, /**< Wrote to a read-only filesystem. */
PHYSFS_ERR_CORRUPT, /**< Corrupted data encountered. */
PHYSFS_ERR_SYMLINK_LOOP, /**< Infinite symbolic link loop. */
PHYSFS_ERR_IO, /**< i/o error (hardware failure, etc). */
PHYSFS_ERR_PERMISSION, /**< Permission denied. */
PHYSFS_ERR_NO_SPACE, /**< No space (disk full, over quota, etc) */
PHYSFS_ERR_BAD_FILENAME, /**< Filename is bogus/insecure. */
PHYSFS_ERR_BUSY, /**< Tried to modify a file the OS needs. */
PHYSFS_ERR_DIR_NOT_EMPTY, /**< Tried to delete dir with files in it. */
PHYSFS_ERR_OS_ERROR, /**< Unspecified OS-level error. */
PHYSFS_ERR_DUPLICATE, /**< Duplicate entry. */
PHYSFS_ERR_BAD_PASSWORD, /**< Bad password. */
PHYSFS_ERR_APP_CALLBACK /**< Application callback reported error. */
} PHYSFS_ErrorCode;
/**
* \fn PHYSFS_ErrorCode PHYSFS_getLastErrorCode(void)
* \brief Get machine-readable error information.
*
* Get the last PhysicsFS error message as an integer value. This will return
* PHYSFS_ERR_OK if there's been no error since the last call to this
* function. Each thread has a unique error state associated with it, but
* each time a new error message is set, it will overwrite the previous one
* associated with that thread. It is safe to call this function at anytime,
* even before PHYSFS_init().
*
* PHYSFS_getLastError() and PHYSFS_getLastErrorCode() both reset the same
* thread-specific error state. Calling one will wipe out the other's
* data. If you need both, call PHYSFS_getLastErrorCode(), then pass that
* value to PHYSFS_getErrorByCode().
*
* Generally, applications should only concern themselves with whether a
* given function failed; however, if you require more specifics, you can
* try this function to glean information, if there's some specific problem
* you're expecting and plan to handle. But with most things that involve
* file systems, the best course of action is usually to give up, report the
* problem to the user, and let them figure out what should be done about it.
* For that, you might prefer PHYSFS_getErrorByCode() instead.
*
* \return Enumeration value that represents last reported error.
*
* \sa PHYSFS_getErrorByCode
*/
PHYSFS_DECL PHYSFS_ErrorCode PHYSFS_getLastErrorCode(void);
/**
* \fn const char *PHYSFS_getErrorByCode(PHYSFS_ErrorCode code)
* \brief Get human-readable description string for a given error code.
*
* Get a static string, in UTF-8 format, that represents an English
* description of a given error code.
*
* This string is guaranteed to never change (although we may add new strings
* for new error codes in later versions of PhysicsFS), so you can use it
* for keying a localization dictionary.
*
* It is safe to call this function at anytime, even before PHYSFS_init().
*
* These strings are meant to be passed on directly to the user.
* Generally, applications should only concern themselves with whether a
* given function failed, but not care about the specifics much.
*
* Do not attempt to free the returned strings; they are read-only and you
* don't own their memory pages.
*
* \param code Error code to convert to a string.
* \return READ ONLY string of requested error message, NULL if this
* is not a valid PhysicsFS error code. Always check for NULL if
* you might be looking up an error code that didn't exist in an
* earlier version of PhysicsFS.
*
* \sa PHYSFS_getLastErrorCode
*/
PHYSFS_DECL const char *PHYSFS_getErrorByCode(PHYSFS_ErrorCode code);
/**
* \fn void PHYSFS_setErrorCode(PHYSFS_ErrorCode code)
* \brief Set the current thread's error code.
*
* This lets you set the value that will be returned by the next call to
* PHYSFS_getLastErrorCode(). This will replace any existing error code,
* whether set by your application or internally by PhysicsFS.
*
* Error codes are stored per-thread; what you set here will not be
* accessible to another thread.
*
* Any call into PhysicsFS may change the current error code, so any code you
* set here is somewhat fragile, and thus you shouldn't build any serious
* error reporting framework on this function. The primary goal of this
* function is to allow PHYSFS_Io implementations to set the error state,
* which generally will be passed back to your application when PhysicsFS
* makes a PHYSFS_Io call that fails internally.
*
* This function doesn't care if the error code is a value known to PhysicsFS
* or not (but PHYSFS_getErrorByCode() will return NULL for unknown values).
* The value will be reported unmolested by PHYSFS_getLastErrorCode().
*
* \param code Error code to become the current thread's new error state.
*
* \sa PHYSFS_getLastErrorCode
* \sa PHYSFS_getErrorByCode
*/
PHYSFS_DECL void PHYSFS_setErrorCode(PHYSFS_ErrorCode code);
/**
* \fn const char *PHYSFS_getPrefDir(const char *org, const char *app)
* \brief Get the user-and-app-specific path where files can be written.
*
* Helper function.
*
* Get the "pref dir". This is meant to be where users can write personal
* files (preferences and save games, etc) that are specific to your
* application. This directory is unique per user, per application.
*
* This function will decide the appropriate location in the native filesystem,
* create the directory if necessary, and return a string in
* platform-dependent notation, suitable for passing to PHYSFS_setWriteDir().
*
* On Windows, this might look like:
* "C:\\Users\\bob\\AppData\\Roaming\\My Company\\My Program Name"
*
* On Linux, this might look like:
* "/home/bob/.local/share/My Program Name"
*
* On Mac OS X, this might look like:
* "/Users/bob/Library/Application Support/My Program Name"
*
* (etc.)
*
* You should probably use the pref dir for your write dir, and also put it
* near the beginning of your search path. Older versions of PhysicsFS
* offered only PHYSFS_getUserDir() and left you to figure out where the
* files should go under that tree. This finds the correct location
* for whatever platform, which not only changes between operating systems,
* but also versions of the same operating system.
*
* You specify the name of your organization (if it's not a real organization,
* your name or an Internet domain you own might do) and the name of your
* application. These should be proper names.
*
* Both the (org) and (app) strings may become part of a directory name, so
* please follow these rules:
*
* - Try to use the same org string (including case-sensitivity) for
* all your applications that use this function.
* - Always use a unique app string for each one, and make sure it never
* changes for an app once you've decided on it.
* - Unicode characters are legal, as long as it's UTF-8 encoded, but...
* - ...only use letters, numbers, and spaces. Avoid punctuation like
* "Game Name 2: Bad Guy's Revenge!" ... "Game Name 2" is sufficient.
*
* The pointer returned by this function remains valid until you call this
* function again, or call PHYSFS_deinit(). This is not necessarily a fast
* call, though, so you should call this once at startup and copy the string
* if you need it.
*
* You should assume the path returned by this function is the only safe
* place to write files (and that PHYSFS_getUserDir() and PHYSFS_getBaseDir(),
* while they might be writable, or even parents of the returned path, aren't
* where you should be writing things).
*
* \param org The name of your organization.
* \param app The name of your application.
* \return READ ONLY string of user dir in platform-dependent notation. NULL
* if there's a problem (creating directory failed, etc).
*
* \sa PHYSFS_getBaseDir
* \sa PHYSFS_getUserDir
*/
PHYSFS_DECL const char *PHYSFS_getPrefDir(const char *org, const char *app);
/**
* \struct PHYSFS_Archiver
* \brief Abstract interface to provide support for user-defined archives.
*
* \warning This is advanced, hardcore stuff. You don't need this unless you
* really know what you're doing. Most apps will not need this.
*
* Historically, PhysicsFS provided a means to mount various archive file
* formats, and physical directories in the native filesystem. However,
* applications have been limited to the file formats provided by the
* library. This interface allows an application to provide their own
* archive file types.
*
* Conceptually, a PHYSFS_Archiver provides directory entries, while
* PHYSFS_Io provides data streams for those directory entries. The most
* obvious use of PHYSFS_Archiver is to provide support for an archive
* file type that isn't provided by PhysicsFS directly: perhaps some
* proprietary format that only your application needs to understand.
*
* Internally, all the built-in archive support uses this interface, so the
* best examples for building a PHYSFS_Archiver is the source code to
* PhysicsFS itself.
*
* An archiver is added to the system with PHYSFS_registerArchiver(), and then
* it will be available for use automatically with PHYSFS_mount(); if a
* given archive can be handled with your archiver, it will be given control
* as appropriate.
*
* These methods deal with dir handles. You have one instance of your
* archiver, and it generates a unique, opaque handle for each opened
* archive in its openArchive() method. Since the lifetime of an Archiver
* (not an archive) is generally the entire lifetime of the process, and it's
* assumed to be a singleton, we do not provide any instance data for the
* archiver itself; the app can just use some static variables if necessary.
*
* Symlinks should always be followed (except in stat()); PhysicsFS will
* use the stat() method to check for symlinks and make a judgement on
* whether to continue to call other methods based on that.
*
* Archivers, when necessary, should set the PhysicsFS error state with
* PHYSFS_setErrorCode() before returning. PhysicsFS will pass these errors
* back to the application unmolested in most cases.
*
* Thread safety: PHYSFS_Archiver implementations are not guaranteed to be
* thread safe in themselves. PhysicsFS provides thread safety when it calls
* into a given archiver inside the library, but it does not promise that
* using the same PHYSFS_File from two threads at once is thread-safe; as
* such, your PHYSFS_Archiver can assume that locking is handled for you
* so long as the PHYSFS_Io you return from PHYSFS_open* doesn't change any
* of your Archiver state, as the PHYSFS_Io won't be as aggressively
* protected.
*
* \sa PHYSFS_registerArchiver
* \sa PHYSFS_deregisterArchiver
* \sa PHYSFS_supportedArchiveTypes
*/
typedef struct PHYSFS_Archiver
{
/**
* \brief Binary compatibility information.
*
* This must be set to zero at this time. Future versions of this
* struct will increment this field, so we know what a given
* implementation supports. We'll presumably keep supporting older
* versions as we offer new features, though.
*/
PHYSFS_uint32 version;
/**
* \brief Basic info about this archiver.
*
* This is used to identify your archive, and is returned in
* PHYSFS_supportedArchiveTypes().
*/
PHYSFS_ArchiveInfo info;
/**
* \brief Open an archive provided by (io).
*
* This is where resources are allocated and data is parsed when mounting
* an archive.
* (name) is a filename associated with (io), but doesn't necessarily
* map to anything, let alone a real filename. This possibly-
* meaningless name is in platform-dependent notation.
* (forWrite) is non-zero if this is to be used for
* the write directory, and zero if this is to be used for an
* element of the search path.
* (claimed) should be set to 1 if this is definitely an archive your
* archiver implementation can handle, even if it fails. We use to
* decide if we should stop trying other archivers if you fail to open
* it. For example: the .zip archiver will set this to 1 for something
* that's got a .zip file signature, even if it failed because the file
* was also truncated. No sense in trying other archivers here, we
* already tried to handle it with the appropriate implementation!.
* Return NULL on failure and set (claimed) appropriately. If no archiver
* opened the archive or set (claimed), PHYSFS_mount() will report
* PHYSFS_ERR_UNSUPPORTED. Otherwise, it will report the error from the
* archiver that claimed the data through (claimed).
* Return non-NULL on success. The pointer returned will be
* passed as the "opaque" parameter for later calls.
*/
void *(*openArchive)(PHYSFS_Io *io, const char *name,
int forWrite, int *claimed);
/**
* \brief List all files in (dirname).
*
* Each file is passed to (cb), where a copy is made if appropriate, so
* you can dispose of it upon return from the callback. (dirname) is in
* platform-independent notation.
* If you have a failure, call PHYSFS_SetErrorCode() with whatever code
* seem appropriate and return PHYSFS_ENUM_ERROR.
* If the callback returns PHYSFS_ENUM_ERROR, please call
* PHYSFS_SetErrorCode(PHYSFS_ERR_APP_CALLBACK) and then return
* PHYSFS_ENUM_ERROR as well. Don't call the callback again in any
* circumstances.
* If the callback returns PHYSFS_ENUM_STOP, stop enumerating and return
* PHYSFS_ENUM_STOP as well. Don't call the callback again in any
* circumstances. Don't set an error code in this case.
* Callbacks are only supposed to return a value from
* PHYSFS_EnumerateCallbackResult. Any other result has undefined
* behavior.
* As long as the callback returned PHYSFS_ENUM_OK and you haven't
* experienced any errors of your own, keep enumerating until you're done
* and then return PHYSFS_ENUM_OK without setting an error code.
*
* \warning PHYSFS_enumerate returns zero or non-zero (success or failure),
* so be aware this function pointer returns different values!
*/
PHYSFS_EnumerateCallbackResult (*enumerate)(void *opaque,
const char *dirname, PHYSFS_EnumerateCallback cb,
const char *origdir, void *callbackdata);
/**
* \brief Open a file in this archive for reading.
*
* This filename, (fnm), is in platform-independent notation.
* Fail if the file does not exist.
* Returns NULL on failure, and calls PHYSFS_setErrorCode().
* Returns non-NULL on success. The pointer returned will be
* passed as the "opaque" parameter for later file calls.
*/
PHYSFS_Io *(*openRead)(void *opaque, const char *fnm);
/**
* \brief Open a file in this archive for writing.
*
* If the file does not exist, it should be created. If it exists,
* it should be truncated to zero bytes. The writing offset should
* be the start of the file.
* If the archive is read-only, this operation should fail.
* This filename is in platform-independent notation.
* Returns NULL on failure, and calls PHYSFS_setErrorCode().
* Returns non-NULL on success. The pointer returned will be
* passed as the "opaque" parameter for later file calls.
*/
PHYSFS_Io *(*openWrite)(void *opaque, const char *filename);
/**
* \brief Open a file in this archive for appending.
*
* If the file does not exist, it should be created. The writing
* offset should be the end of the file.
* If the archive is read-only, this operation should fail.
* This filename is in platform-independent notation.
* Returns NULL on failure, and calls PHYSFS_setErrorCode().
* Returns non-NULL on success. The pointer returned will be
* passed as the "opaque" parameter for later file calls.
*/
PHYSFS_Io *(*openAppend)(void *opaque, const char *filename);
/**
* \brief Delete a file or directory in the archive.
*
* This same call is used for both files and directories; there is not a
* separate rmdir() call. Directories are only meant to be removed if
* they are empty.
* If the archive is read-only, this operation should fail.
*
* Return non-zero on success, zero on failure.
* This filename is in platform-independent notation.
* On failure, call PHYSFS_setErrorCode().
*/
int (*remove)(void *opaque, const char *filename);
/**
* \brief Create a directory in the archive.
*
* If the application is trying to make multiple dirs, PhysicsFS
* will split them up into multiple calls before passing them to
* your driver.
* If the archive is read-only, this operation should fail.
* Return non-zero on success, zero on failure.
* This filename is in platform-independent notation.
* On failure, call PHYSFS_setErrorCode().
*/
int (*mkdir)(void *opaque, const char *filename);
/**
* \brief Obtain basic file metadata.
*
* On success, fill in all the fields in (stat), using
* reasonable defaults for fields that apply to your archive.
*
* Returns non-zero on success, zero on failure.
* This filename is in platform-independent notation.
* On failure, call PHYSFS_setErrorCode().
*/
int (*stat)(void *opaque, const char *fn, PHYSFS_Stat *stat);
/**
* \brief Destruct a previously-opened archive.
*
* Close this archive, and free any associated memory,
* including the original PHYSFS_Io and (opaque) itself, if
* applicable. Implementation can assume that it won't be called if
* there are still files open from this archive.
*/
void (*closeArchive)(void *opaque);
} PHYSFS_Archiver;
/**
* \fn int PHYSFS_registerArchiver(const PHYSFS_Archiver *archiver)
* \brief Add a new archiver to the system.
*
* \warning This is advanced, hardcore stuff. You don't need this unless you
* really know what you're doing. Most apps will not need this.
*
* If you want to provide your own archiver (for example, a custom archive
* file format, or some virtual thing you want to make look like a filesystem
* that you can access through the usual PhysicsFS APIs), this is where you
* start. Once an archiver is successfully registered, then you can use
* PHYSFS_mount() to add archives that your archiver supports to the
* search path, or perhaps use it as the write dir. Internally, PhysicsFS
* uses this function to register its own built-in archivers, like .zip
* support, etc.
*
* You may not have two archivers that handle the same extension. If you are
* going to have a clash, you can deregister the other archiver (including
* built-in ones) with PHYSFS_deregisterArchiver().
*
* The data in (archiver) is copied; you may free this pointer when this
* function returns.
*
* Once this function returns successfully, PhysicsFS will be able to support
* archives of this type until you deregister the archiver again.
*
* \param archiver The archiver to register.
* \return Zero on error, non-zero on success.
*
* \sa PHYSFS_Archiver
* \sa PHYSFS_deregisterArchiver
*/
PHYSFS_DECL int PHYSFS_registerArchiver(const PHYSFS_Archiver *archiver);
/**
* \fn int PHYSFS_deregisterArchiver(const char *ext)
* \brief Remove an archiver from the system.
*
* If for some reason, you only need your previously-registered archiver to
* live for a portion of your app's lifetime, you can remove it from the
* system once you're done with it through this function.
*
* This fails if there are any archives still open that use this archiver.
*
* This function can also remove internally-supplied archivers, like .zip
* support or whatnot. This could be useful in some situations, like
* disabling support for them outright or overriding them with your own
* implementation. Once an internal archiver is disabled like this,
* PhysicsFS provides no mechanism to recover them, short of calling
* PHYSFS_deinit() and PHYSFS_init() again.
*
* PHYSFS_deinit() will automatically deregister all archivers, so you don't
* need to explicitly deregister yours if you otherwise shut down cleanly.
*
* \param ext Filename extension that the archiver handles.
* \return Zero on error, non-zero on success.
*
* \sa PHYSFS_Archiver
* \sa PHYSFS_registerArchiver
*/
PHYSFS_DECL int PHYSFS_deregisterArchiver(const char *ext);
/* Everything above this line is part of the PhysicsFS 2.1 API. */
/**
* \fn int PHYSFS_setRoot(const char *archive, const char *subdir)
* \brief Make a subdirectory of an archive its root directory.
*
* This lets you narrow down the accessible files in a specific archive. For
* example, if you have x.zip with a file in y/z.txt, mounted to /a, if you
* call PHYSFS_setRoot("x.zip", "/y"), then the call
* PHYSFS_openRead("/a/z.txt") will succeed.
*
* You can change an archive's root at any time, altering the interpolated
* file tree (depending on where paths shift, a different archive may be
* providing various files). If you set the root to NULL or "/", the
* archive will be treated as if no special root was set (as if the archive
* was just mounted normally).
*
* Changing the root only affects future operations on pathnames; a file
* that was opened from a path that changed due to a setRoot will not be
* affected.
*
* Setting a new root is not limited to archives in the search path; you may
* set one on the write dir, too, which might be useful if you have files
* open for write and thus can't change the write dir at the moment.
*
* It is not an error to set a subdirectory that does not exist to be the
* root of an archive; however, no files will be visible in this case. If
* the missing directories end up getting created (a mkdir to the physical
* filesystem, etc) then this will be reflected in the interpolated tree.
*
* \param archive dir/archive on which to change root.
* \param subdir new subdirectory to make the root of this archive.
* \return nonzero on success, zero on failure. Use
* PHYSFS_getLastErrorCode() to obtain the specific error.
*/
PHYSFS_DECL int PHYSFS_setRoot(const char *archive, const char *subdir);
/* Everything above this line is part of the PhysicsFS 3.1 API. */
#ifdef __cplusplus
}
#endif
#endif /* !defined _INCLUDE_PHYSFS_H_ */
/* end of physfs.h ... */
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