/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <errno.h>
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include "unistd_wrapper.h"
#import "OFFile.h"
#import "OFString.h"
#import "OFLocalization.h"
#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFOpenItemFailedException.h"
#import "OFOutOfRangeException.h"
#import "OFReadFailedException.h"
#import "OFSeekFailedException.h"
#import "OFWriteFailedException.h"
#ifdef OF_WINDOWS
# include <windows.h>
#endif
#if defined(OF_MORPHOS) && !defined(OF_IXEMUL)
# define BOOL EXEC_BOOL
# include <proto/dos.h>
# undef BOOL
#endif
#ifdef OF_WII
# define BOOL OGC_BOOL
# include <fat.h>
# undef BOOL
#endif
#ifdef OF_NINTENDO_DS
# include <stdbool.h>
# include <filesystem.h>
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#ifndef O_CLOEXEC
# define O_CLOEXEC 0
#endif
#ifndef O_EXCL
# define O_EXCL 0
#endif
#ifndef O_EXLOCK
# define O_EXLOCK 0
#endif
#ifndef S_IRGRP
# define S_IRGRP 0
#endif
#ifndef S_IROTH
# define S_IROTH 0
#endif
#ifndef S_IWGRP
# define S_IWGRP 0
#endif
#ifndef S_IWOTH
# define S_IWOTH 0
#endif
#define DEFAULT_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
static int
parseMode(const char *mode)
{
if (strcmp(mode, "r") == 0)
return O_RDONLY;
if (strcmp(mode, "w") == 0)
return O_WRONLY | O_CREAT | O_TRUNC;
if (strcmp(mode, "wx") == 0)
return O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK;
if (strcmp(mode, "a") == 0)
return O_WRONLY | O_CREAT | O_APPEND;
if (strcmp(mode, "rb") == 0)
return O_RDONLY | O_BINARY;
if (strcmp(mode, "wb") == 0)
return O_WRONLY | O_CREAT | O_TRUNC | O_BINARY;
if (strcmp(mode, "wbx") == 0)
return O_WRONLY | O_CREAT | O_EXCL | O_EXLOCK;
if (strcmp(mode, "ab") == 0)
return O_WRONLY | O_CREAT | O_APPEND | O_BINARY;
if (strcmp(mode, "r+") == 0)
return O_RDWR;
if (strcmp(mode, "w+") == 0)
return O_RDWR | O_CREAT | O_TRUNC;
if (strcmp(mode, "a+") == 0)
return O_RDWR | O_CREAT | O_APPEND;
if (strcmp(mode, "r+b") == 0 || strcmp(mode, "rb+") == 0)
return O_RDWR | O_BINARY;
if (strcmp(mode, "w+b") == 0 || strcmp(mode, "wb+") == 0)
return O_RDWR | O_CREAT | O_TRUNC | O_BINARY;
if (strcmp(mode, "w+bx") == 0 || strcmp(mode, "wb+x") == 0)
return O_RDWR | O_CREAT | O_EXCL | O_EXLOCK;
if (strcmp(mode, "ab+") == 0 || strcmp(mode, "a+b") == 0)
return O_RDWR | O_CREAT | O_APPEND | O_BINARY;
return -1;
}
#else
static int
parseMode(const char *mode, bool *append)
{
if (strcmp(mode, "r") == 0)
return MODE_OLDFILE;
if (strcmp(mode, "w") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "wx") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "a") == 0) {
*append = true;
return MODE_READWRITE;
}
if (strcmp(mode, "rb") == 0)
return MODE_OLDFILE;
if (strcmp(mode, "wb") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "wbx") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "ab") == 0) {
*append = true;
return MODE_READWRITE;
}
if (strcmp(mode, "r+") == 0)
return MODE_OLDFILE;
if (strcmp(mode, "w+") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "a+") == 0) {
*append = true;
return MODE_READWRITE;
}
if (strcmp(mode, "r+b") == 0 || strcmp(mode, "rb+") == 0)
return MODE_OLDFILE;
if (strcmp(mode, "w+b") == 0 || strcmp(mode, "wb+") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "w+bx") == 0 || strcmp(mode, "wb+x") == 0)
return MODE_NEWFILE;
if (strcmp(mode, "ab+") == 0 || strcmp(mode, "a+b") == 0) {
*append = true;
return MODE_READWRITE;
}
return -1;
}
#endif
@implementation OFFile
+ (void)initialize
{
if (self != [OFFile class])
return;
#ifdef OF_WII
if (!fatInitDefault())
@throw [OFInitializationFailedException
exceptionWithClass: self];
#endif
#ifdef OF_NINTENDO_DS
if (!nitroFSInit(NULL))
@throw [OFInitializationFailedException
exceptionWithClass: self];
#endif
}
+ (instancetype)fileWithPath: (OFString *)path
mode: (OFString *)mode
{
return [[[self alloc] initWithPath: path
mode: mode] autorelease];
}
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
+ (instancetype)fileWithFileDescriptor: (int)fd
{
return [[[self alloc] initWithFileDescriptor: fd] autorelease];
}
#else
+ (instancetype)fileWithHandle: (BPTR)handle
{
return [[[self alloc] initWithHandle: handle] autorelease];
}
#endif
- init
{
OF_INVALID_INIT_METHOD
}
- initWithPath: (OFString *)path
mode: (OFString *)mode
{
self = [super init];
@try {
int flags;
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
if ((flags = parseMode([mode UTF8String])) == -1)
@throw [OFInvalidArgumentException exception];
flags |= O_CLOEXEC;
# if defined(OF_WINDOWS)
if ((_fd = _wopen([path UTF16String], flags,
DEFAULT_MODE)) == -1)
# elif defined(OF_HAVE_OFF64_T)
if ((_fd = open64([path cStringWithEncoding:
[OFLocalization encoding]], flags, DEFAULT_MODE)) == -1)
# else
if ((_fd = open([path cStringWithEncoding:
[OFLocalization encoding]], flags, DEFAULT_MODE)) == -1)
# endif
@throw [OFOpenItemFailedException
exceptionWithPath: path
mode: mode
errNo: errno];
#else
if ((flags = parseMode([mode UTF8String], &_append)) == -1)
@throw [OFInvalidArgumentException exception];
if ((_handle = Open([path cStringWithEncoding:
[OFLocalization encoding]], flags)) == 0)
@throw [OFOpenItemFailedException
exceptionWithPath: path
mode: mode];
if (_append) {
if (Seek64(_handle, 0, OFFSET_END) == -1)
@throw [OFOpenItemFailedException
exceptionWithPath: path
mode: mode];
}
#endif
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
- initWithFileDescriptor: (int)fd
{
self = [super init];
_fd = fd;
return self;
}
#else
- initWithHandle: (BPTR)handle
{
self = [super init];
_handle = handle;
return self;
}
#endif
- (bool)lowlevelIsAtEndOfStream
{
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
if (_fd == -1)
return true;
#else
if (_handle == 0)
return true;
#endif
return _atEndOfStream;
}
- (size_t)lowlevelReadIntoBuffer: (void *)buffer
length: (size_t)length
{
ssize_t ret;
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
if (_fd == -1 || _atEndOfStream)
@throw [OFReadFailedException exceptionWithObject: self
requestedLength: length];
# ifndef OF_WINDOWS
if ((ret = read(_fd, buffer, length)) < 0)
@throw [OFReadFailedException exceptionWithObject: self
requestedLength: length
errNo: errno];
# else
if (length > UINT_MAX)
@throw [OFOutOfRangeException exception];
if ((ret = read(_fd, buffer, (unsigned int)length)) < 0)
@throw [OFReadFailedException exceptionWithObject: self
requestedLength: length
errNo: errno];
# endif
#else
if (_handle == 0 || _atEndOfStream)
@throw [OFReadFailedException exceptionWithObject: self
requestedLength: length];
if (length > LONG_MAX)
@throw [OFOutOfRangeException exception];
if ((ret = Read(_handle, buffer, length)) < 0)
@throw [OFReadFailedException exceptionWithObject: self
requestedLength: length];
#endif
if (ret == 0)
_atEndOfStream = true;
return ret;
}
- (void)lowlevelWriteBuffer: (const void *)buffer
length: (size_t)length
{
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
if (_fd == -1 || _atEndOfStream)
@throw [OFWriteFailedException exceptionWithObject: self
requestedLength: length];
# ifndef OF_WINDOWS
if (length > SSIZE_MAX)
@throw [OFOutOfRangeException exception];
if (write(_fd, buffer, length) != (ssize_t)length)
@throw [OFWriteFailedException exceptionWithObject: self
requestedLength: length
errNo: errno];
# else
if (length > INT_MAX)
@throw [OFOutOfRangeException exception];
if (write(_fd, buffer, (int)length) != (int)length)
@throw [OFWriteFailedException exceptionWithObject: self
requestedLength: length
errNo: errno];
# endif
#else
if (_handle == 0 || _atEndOfStream)
@throw [OFWriteFailedException exceptionWithObject: self
requestedLength: length];
if (length > LONG_MAX)
@throw [OFOutOfRangeException exception];
if (_append) {
if (Seek64(_handle, 0, OFFSET_END) == -1)
@throw [OFWriteFailedException
exceptionWithObject: self
requestedLength: length];
}
if (Write(_handle, (void *)buffer, length) != (LONG)length)
@throw [OFWriteFailedException exceptionWithObject: self
requestedLength: length];
#endif
}
- (of_offset_t)lowlevelSeekToOffset: (of_offset_t)offset
whence: (int)whence
{
of_offset_t ret;
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
if (_fd == -1)
@throw [OFSeekFailedException exceptionWithStream: self
offset: offset
whence: whence];
# if defined(OF_WINDOWS)
ret = _lseeki64(_fd, offset, whence);
# elif defined(OF_HAVE_OFF64_T)
ret = lseek64(_fd, offset, whence);
# else
ret = lseek(_fd, offset, whence);
# endif
if (ret == -1)
@throw [OFSeekFailedException exceptionWithStream: self
offset: offset
whence: whence
errNo: errno];
#else
if (_handle == 0)
@throw [OFSeekFailedException exceptionWithStream: self
offset: offset
whence: whence];
switch (whence) {
case SEEK_SET:
ret = Seek64(_handle, offset, OFFSET_BEGINNING);
break;
case SEEK_CUR:
ret = Seek64(_handle, offset, OFFSET_CURRENT);
break;
case SEEK_END:
ret = Seek64(_handle, offset, OFFSET_END);
break;
default:
ret = -1;
break;
}
if (ret == -1)
@throw [OFSeekFailedException exceptionWithStream: self
offset: offset
whence: whence];
#endif
_atEndOfStream = false;
return ret;
}
#if !defined(OF_WINDOWS) && (!defined(OF_MORPHOS) || defined(OF_IXEMUL))
- (int)fileDescriptorForReading
{
return _fd;
}
- (int)fileDescriptorForWriting
{
return _fd;
}
#endif
- (void)close
{
#if !defined(OF_MORPHOS) || defined(OF_IXEMUL)
if (_fd != -1)
close(_fd);
_fd = -1;
#else
if (_handle != 0)
Close(_handle);
_handle = 0;
#endif
[super close];
}
- (void)dealloc
{
[self close];
[super dealloc];
}
@end