int
OggSoundFile::cb_seek(void* source, ogg_int64_t offset, int whence)
{
PHYSFS_file* file = reinterpret_cast<PHYSFS_file*> (source);
switch(whence) {
case SEEK_SET:
if(PHYSFS_seek(file, static_cast<PHYSFS_uint64> (offset)) == 0)
return -1;
break;
case SEEK_CUR:
if(PHYSFS_seek(file, PHYSFS_tell(file) + offset) == 0)
return -1;
break;
case SEEK_END:
if(PHYSFS_seek(file, PHYSFS_fileLength(file) + offset) == 0)
return -1;
break;
default:
#ifdef DEBUG
assert(false);
#else
return -1;
#endif
}
return 0;
}
int OSBasics::seek(OSFILE * stream, long int offset, int origin ) {
switch(stream->fileType) {
case OSFILE::TYPE_FILE:
return fseek(stream->file, offset, origin);
break;
case OSFILE::TYPE_ARCHIVE_FILE:
switch(origin) {
case SEEK_SET:
return PHYSFS_seek(stream->physFSFile, offset);
break;
case SEEK_CUR: {
PHYSFS_sint64 curoffset = PHYSFS_tell(stream->physFSFile);
return PHYSFS_seek(stream->physFSFile, curoffset+offset);
}
break;
case SEEK_END: {
PHYSFS_sint64 fileLength = PHYSFS_fileLength(stream->physFSFile);
return PHYSFS_seek(stream->physFSFile, fileLength-offset);
}
break;
}
break;
}
return 0;
}
bool FileReadObject::seek(long finalPos, bool relativeMovement)
{
if (relativeMovement)
finalPos += PHYSFS_tell(mFileHandle);
return PHYSFS_seek(mFileHandle, finalPos);
}
int File::tell()
{
if(file == 0)
return -1;
return (int)PHYSFS_tell(file);
}
bool
vsFile::PeekRecord( vsRecord *r )
{
vsAssert(r != NULL, "Called vsFile::Record with a NULL vsRecord!");
if ( m_mode == MODE_Write )
{
vsAssert( m_mode != MODE_Write, "Error: Not legal to PeekRecord() when writing a file!" );
return false;
}
else
{
bool succeeded = false;
vsString line;
r->Init();
PHYSFS_sint64 filePos = PHYSFS_tell(m_file);
if ( r->Parse(this) )
succeeded = true;
PHYSFS_seek(m_file, filePos);
return succeeded;
}
return false;
}
uint FileStream::tell()
{
if(!m_caching)
return PHYSFS_tell(m_fileHandle);
else
return m_pos;
}
size_t
WavSoundFile::read(void* buffer, size_t buffer_size)
{
PHYSFS_sint64 end = datastart + size;
PHYSFS_sint64 cur = PHYSFS_tell(file);
if(cur >= end)
return 0;
size_t readsize = std::min(static_cast<size_t> (end - cur), buffer_size);
if(PHYSFS_read(file, buffer, readsize, 1) != 1)
throw SoundError("read error while reading samples");
#ifdef WORDS_BIGENDIAN
if (bits_per_sample != 16)
return readsize;
char *tmp = (char*)buffer;
size_t i;
char c;
for (i = 0; i < readsize / 2; i++)
{
c = tmp[2*i];
tmp[2*i] = tmp[2*i+1];
tmp[2*i+1] = c;
}
buffer = tmp;
#endif
return readsize;
}
bool physfsFile::prepareRead() {
PHYSFS_uint64 pos = PHYSFS_tell(fhandle);
PHYSFS_close(fhandle);
fhandle = PHYSFS_openRead(pname);
PHYSFS_seek(fhandle, pos);
//LOG_MSG("Goto read (%s at %i)",pname,PHYSFS_tell(fhandle));
return true;
}
bool
vsFile::PeekLine( vsString *line )
{
PHYSFS_sint64 filePos = PHYSFS_tell(m_file);
bool result = ReadLine(line);
PHYSFS_seek(m_file, filePos);
return result;
}
int PHYSFS_fixedEof(PHYSFS_File *handle) {
if((PHYSFS_eof(handle)) ||
(PHYSFS_fileLength(handle) == PHYSFS_tell(handle))) {
return 1;
}
return 0;
}
static void PhysFSSkip( void* user, int offset )
{
PHYSFS_File* file = (PHYSFS_File*)user;
const int currentPosition = PHYSFS_tell(file);
assert(currentPosition >= 0);
const int newPosition = currentPosition + offset;
const int success = PHYSFS_seek(file, newPosition);
assert(success);
}
static int wz_oggVorbis_seek(void *datasource, ogg_int64_t offset, int whence)
{
PHYSFS_file* fileHandle;
BOOL allowSeeking;
int newPos;
ASSERT(datasource != NULL, "NULL decoder passed!");
fileHandle = ((struct OggVorbisDecoderState*)datasource)->fileHandle;
ASSERT(fileHandle != NULL, "Bad PhysicsFS file handle passed in");
allowSeeking = ((struct OggVorbisDecoderState*)datasource)->allowSeeking;
if (!allowSeeking)
return -1;
switch (whence)
{
// Seek to absolute position
case SEEK_SET:
newPos = offset;
break;
// Seek `offset` ahead
case SEEK_CUR:
{
int curPos = PHYSFS_tell(fileHandle);
if (curPos == -1)
return -1;
newPos = curPos + offset;
break;
}
// Seek backwards from the end of the file
case SEEK_END:
{
int fileSize = PHYSFS_fileLength(fileHandle);
if (fileSize == -1)
return -1;
newPos = fileSize - 1 - offset;
break;
}
// unrecognized seek instruction
default:
// indicate failure
return -1;
}
// PHYSFS_seek return value of non-zero means success
if (PHYSFS_seek(fileHandle, newPos) != 0)
return newPos; // success
else
return -1; // failure
}
pos_type seekpos(pos_type pos, std::ios_base::openmode mode) {
PHYSFS_seek(file, pos);
if (mode & std::ios_base::in) {
setg(egptr(), egptr(), egptr());
}
if (mode & std::ios_base::out) {
setp(buffer, buffer);
}
return PHYSFS_tell(file);
}
uint32_t File::tell() const
{
check_file_open();
PHYSFS_sint64 tp = PHYSFS_tell( reinterpret_cast<PHYSFS_file*> (mHandle) );
if(tp == -1)
BOOST_THROW_EXCEPTION( PhysfsFileException(mFileName) );
return tp;
}
long OSBasics::tell(OSFILE * stream) {
switch(stream->fileType) {
case OSFILE::TYPE_FILE:
return ftell(stream->file);
break;
case OSFILE::TYPE_ARCHIVE_FILE:
return PHYSFS_tell(stream->physFSFile);
break;
}
return 0;
}
static long wz_oggVorbis_tell(void *datasource)
{
PHYSFS_file* fileHandle;
ASSERT(datasource != NULL, "NULL decoder passed!");
fileHandle = ((struct OggVorbisDecoderState*)datasource)->fileHandle;
ASSERT(fileHandle != NULL, "Bad PhysicsFS file handle passed in");
return PHYSFS_tell(fileHandle);
}
std::size_t File::CurrentPosition() const
{
PHYSFS_sint64 position = PHYSFS_tell(impl->physfsFileHandle);
if (position == -1)
{
throw Exception(std::string("Could not obtain current position of file ") + mountedFilePath.path + "\n" + PHYSFS_getLastError());
}
return LossyCast<std::size_t, PHYSFS_sint64>(position);
}
pos_type seekoff(off_type pos, ios_base::seekdir dir, ios_base::openmode mode) {
switch (dir) {
case std::ios_base::beg:
PHYSFS_seek(file, pos);
break;
case std::ios_base::cur:
// subtract characters currently in buffer from seek position
PHYSFS_seek(file, (PHYSFS_tell(file) + pos) - (egptr() - gptr()));
break;
case std::ios_base::end:
PHYSFS_seek(file, PHYSFS_fileLength(file) + pos);
break;
}
if (mode & std::ios_base::in) {
setg(egptr(), egptr(), egptr());
}
if (mode & std::ios_base::out) {
setp(buffer, buffer);
}
return PHYSFS_tell(file);
}
bool physfsFile::Seek(Bit32u * pos,Bit32u type) {
PHYSFS_sint64 mypos = (Bit32s)*pos;
switch (type) {
case DOS_SEEK_SET:break;
case DOS_SEEK_CUR:mypos += PHYSFS_tell(fhandle); break;
case DOS_SEEK_END:mypos += PHYSFS_fileLength(fhandle); break;
default:
//TODO Give some doserrorcode;
return false;//ERROR
}
if (!PHYSFS_seek(fhandle,mypos)) {
// Out of file range, pretend everythings ok
// and move file pointer top end of file... ?! (Black Thorne)
PHYSFS_seek(fhandle,PHYSFS_fileLength(fhandle));
};
//LOG_MSG("Seek to %i (%i at %x) of %s (%s)",(int)mypos,(int)*pos,type,name,PHYSFS_getLastError());
*pos=(Bit32u)PHYSFS_tell(fhandle);
return true;
}
static int64_t file_phys_ftell(ALLEGRO_FILE *f)
{
ALLEGRO_FILE_PHYSFS *fp = cast_stream(f);
PHYSFS_sint64 n;
n = PHYSFS_tell(fp->phys);
if (n < 0) {
phys_set_errno(fp);
return -1;
}
return n;
}
bool physfsFile::Write(Bit8u * data,Bit16u * size) {
if ((this->flags & 0xf) == OPEN_READ) { // check if file opened in read-only mode
DOS_SetError(DOSERR_ACCESS_DENIED);
return false;
}
if (last_action==READ) prepareWrite();
last_action=WRITE;
if (*size==0) {
if (PHYSFS_tell(fhandle) == 0) {
PHYSFS_close(PHYSFS_openWrite(pname));
return false;
//LOG_MSG("Truncate %s (%s)",name,PHYSFS_getLastError());
} else {
LOG_MSG("PHYSFS TODO: truncate not yet implemented (%s at %lld)",pname,PHYSFS_tell(fhandle));
return false;
}
} else {
PHYSFS_sint64 mysize = PHYSFS_write(fhandle,data,1,(PHYSFS_uint32)*size);
//LOG_MSG("Wrote %i bytes (wanted %i) at %i of %s (%s)",(int)mysize,(int)*size,(int)PHYSFS_tell(fhandle),name,PHYSFS_getLastError());
*size = (Bit16u)mysize;
return true;
}
}
static Sint64 physfsrwops_seek(SDL_RWops *rw, Sint64 offset, int whence)
{
PHYSFS_file *handle = (PHYSFS_file *) rw->hidden.unknown.data1;
int pos = 0;
if (whence == SEEK_SET)
{
pos = offset;
}
else if (whence == SEEK_CUR)
{
int current = PHYSFS_tell(handle);
if (current == -1)
{
SDL_SetError("Can't find position in file: %s",
PHYSFS_getLastError());
return(-1);
}
if (offset == 0) // this is a "tell" call. We're done.
return( current );
pos = current + offset;
}
else if (whence == SEEK_END)
{
int len = PHYSFS_fileLength(handle);
if (len == -1)
{
SDL_SetError("Can't find end of file: %s", PHYSFS_getLastError());
return(-1);
}
pos = len + offset;
}
else
{
SDL_SetError("Invalid 'whence' parameter.");
return(-1);
}
if (!PHYSFS_seek(handle, pos))
{
SDL_SetError("PhysicsFS error: %s", PHYSFS_getLastError());
return(-1);
}
return(pos);
}
bool
vsFile::ReadLine( vsString *line )
{
// const int c_bufSize = 1024;
// char buf[c_bufSize];
PHYSFS_sint64 filePos = PHYSFS_tell(m_file);
char peekChar = 'a';
bool done = false;
while ( !done && !AtEnd() && peekChar != '\n' && peekChar != 0 )
{
if ( PHYSFS_read(m_file, &peekChar, 1, 1) <= 0 )
done = true;
}
PHYSFS_sint64 afterFilePos = PHYSFS_tell(m_file);
PHYSFS_uint32 bytes = PHYSFS_uint32(afterFilePos - filePos);
PHYSFS_seek(m_file, filePos);
if ( bytes > 0 )
{
char* buffer = (char*)malloc(bytes+1);
PHYSFS_uint32 bytesRead = PHYSFS_read(m_file, buffer, 1, bytes);
vsAssert(bytesRead == bytes, "Didn't read as many bytes as we expected?");
buffer[bytes-1] = 0;
*line = buffer;
while (line->find('\r') != vsString::npos)
{
line->erase( line->find('\r') );
}
free(buffer);
return true;
}
return false;
}
/**Gets the current offset from the beginning of the file.
* \return Offset in bytes from the beginning of the file.*/
long File::Tell( void ){
long offset;
offset = static_cast<long>(
#ifdef USE_PHYSICSFS
PHYSFS_tell( fp )
#else
ftell(fp)
#endif
);
if ( offset == -1 ){
LogMsg(ERR,"%s: Error using file tell. %s",
validName.c_str(), PHYSFS_getLastError());
}
return offset;
}
/*
* PhysicsFS::File#tell
*
* tells current position in file
*/
VALUE physfs_file_tell (VALUE self)
{
int result;
PHYSFS_File *file;
Data_Get_Struct (self, PHYSFS_File, file);
if (file == 0)
return Qnil;
result = PHYSFS_tell (file);
if (result == -1)
return Qnil;
return INT2FIX(result);
}
static off_t file_seek(stream_t *stream, off_t pos, int whence)
{
PHYSFS_sint64 new_pos;
PHYSFS_File *file;
if (file_check_context(stream))
return -1;
file = stream->context.pfs.file;
new_pos = PHYSFS_tell(file);
if (new_pos == -1) {
s_log_error("Error getting file position: %s. (File: %s)",
pfs_get_error(), stream->context.pfs.file_path);
stream->error = STREAM_ERROR_FAILURE;
return -1;
}
if (pos == 0 && whence == SEEK_CUR)
return new_pos;
switch (whence) {
case SEEK_CUR:
new_pos += pos;
break;
case SEEK_SET:
new_pos = pos;
break;
case SEEK_END:
new_pos = PHYSFS_fileLength(file) + pos;
break;
}
if ( ! PHYSFS_seek(file, new_pos)) {
s_log_error("Error seeking in file: %s. (File: %s)",
pfs_get_error(), stream->context.pfs.file_path);
stream->error = STREAM_ERROR_FAILURE;
return -1;
}
return new_pos;
}
bool physfsFile::prepareWrite() {
const char *wdir = PHYSFS_getWriteDir();
if (wdir == NULL) {
LOG_MSG("PHYSFS could not fulfill write request: no write directory set.");
return false;
}
//LOG_MSG("Goto write (%s at %i)",pname,PHYSFS_tell(fhandle));
const char *fdir = PHYSFS_getRealDir(pname);
PHYSFS_uint64 pos = PHYSFS_tell(fhandle);
char *slash = strrchr(pname,'/');
if (slash && slash != pname) {
*slash = 0;
PHYSFS_mkdir(pname);
*slash = '/';
}
if (strcmp(fdir,wdir)) { /* we need COW */
//LOG_MSG("COW",pname,PHYSFS_tell(fhandle));
PHYSFS_file *whandle = PHYSFS_openWrite(pname);
if (whandle == NULL) {
LOG_MSG("PHYSFS copy-on-write failed: %s.",PHYSFS_getLastError());
return false;
}
char buffer[65536];
PHYSFS_sint64 size;
PHYSFS_seek(fhandle, 0);
while ((size = PHYSFS_read(fhandle,buffer,1,65536)) > 0) {
if (PHYSFS_write(whandle,buffer,1,(PHYSFS_uint32)size) != size) {
LOG_MSG("PHYSFS copy-on-write failed: %s.",PHYSFS_getLastError());
PHYSFS_close(whandle);
return false;
}
}
PHYSFS_seek(whandle, pos);
PHYSFS_close(fhandle);
fhandle = whandle;
} else { // megayuck - physfs on posix platforms uses O_APPEND. We illegally access the fd directly and clear that flag.
//LOG_MSG("noCOW",pname,PHYSFS_tell(fhandle));
PHYSFS_close(fhandle);
fhandle = PHYSFS_openAppend(pname);
#ifndef WIN32
fcntl(**(int**)fhandle->opaque,F_SETFL,0);
#endif
PHYSFS_seek(fhandle, pos);
}
return true;
}
void FileStream::cache()
{
m_caching = true;
if(!m_writeable) {
if(!m_fileHandle)
return;
// cache entire file into data buffer
m_pos = PHYSFS_tell(m_fileHandle);
PHYSFS_seek(m_fileHandle, 0);
int size = PHYSFS_fileLength(m_fileHandle);
m_data.resize(size);
if(PHYSFS_read(m_fileHandle, m_data.data(), size, 1) == -1)
throwError("unable to read file data", true);
PHYSFS_close(m_fileHandle);
m_fileHandle = nullptr;
}
}
std::streampos CInputStreamBuffer::seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which)
{
/* A bit of explanation:
We are reading file by m_bufferSize parts so our 3 internal pointers will be
* eback (not used here) - start of block
* gptr - position of read cursor in block
* egtpr - end of block
off argument is relative to way */
std::streamoff new_position{};
switch (way)
{
case std::ios_base::beg:
new_position = off;
break;
case std::ios_base::cur:
// tell will give cursor at begining of block so we have to add where in block we currently are
new_position = off + static_cast<off_type>(PHYSFS_tell(m_file)) - static_cast<off_type> (egptr() - gptr());
break;
case std::ios_base::end:
new_position = off + static_cast<off_type>(PHYSFS_fileLength(m_file));
break;
default:
break;
}
if (PHYSFS_seek(m_file, new_position))
{
setg(m_buffer.get(), m_buffer.get(), m_buffer.get()); // reset buffer
return pos_type(new_position);
}
return pos_type(off_type(-1));
}
static bool file_phys_seek(ALLEGRO_FILE *f, int64_t offset, int whence)
{
ALLEGRO_FILE_PHYSFS *fp = cast_stream(f);
PHYSFS_sint64 base;
switch (whence) {
case ALLEGRO_SEEK_SET:
base = 0;
break;
case ALLEGRO_SEEK_CUR:
base = PHYSFS_tell(fp->phys);
if (base < 0) {
phys_set_errno(fp);
return false;
}
break;
case ALLEGRO_SEEK_END:
base = PHYSFS_fileLength(fp->phys);
if (base < 0) {
phys_set_errno(fp);
return false;
}
break;
default:
al_set_errno(EINVAL);
return false;
}
if (!PHYSFS_seek(fp->phys, base + offset)) {
phys_set_errno(fp);
return false;
}
return true;
}