class Geo::GeoZLibFileStream

└>Geo::IGeoStream
└>Geo::IGeoInputStream

IGeoStream implementation that saves/loads data from a zlib compressed file.

Since we need the ability to seek backwards within a stream, we have to make an in-memory copy first and then upon close, push this to the disk. If reading, expand whole file, then read what we need. Note that the class will happily open files that were not compressed, and not complain. As a result, you can load a file saved with either GeoZLibFileStream or GeoFileStream using this class.

Functions

Name	Description
~GeoZLibFileStream()	Closes current file, if open.
~IGeoInputStream()	Deleting a stream should behave like a close operation.
~IGeoStream()	Deleting a stream should behave like a close operation.
BeginType(TypeId, u32)	Provide information about the typed data written to the stream.
Close()	Close current file, if any.
EndType(u32)	Provide information about the typed data written to the stream.
GeoZLibFileStream()	Create with no attached file.
GetFilename()	Return the filename with which this stream was opened (not available if created with FILE*)
GetPosition()	Return the position of the read/write pointer within the stream (prototype matches ftell)
GetPosition()	Return the position of the read/write pointer within the stream (prototype matches ftell)
GetPosition()	Return the position of the read/write pointer within the stream (prototype matches ftell)
IsEof()	Is the read pointer at the end of the file (as with feof, only returns true if you have read past end)
IsEof()	Is the read/write pointer at the end of the file (as with feof, only returns true if you have read past end)
IsEof()	Is the read/write pointer at the end of the file (as with feof, only returns true if you have read past end)
IsOk()	Tests if the stream is valid.
IsOk()	Tests if the stream is valid.
IsOk()	Tests if the stream is valid.
Open(char const *, EStreamMode)	Close current file, if any, and open filename.
Read(T(&))	Read a fixed size array.
Read(void *, size_t, size_t)	Read data (prototype matches fread). Prefer to use the templated Read methods.
Read(TIter, TIter)	Read a collection of objects, returning true on success.
Read(void *, size_t, size_t)	Read data (prototype matches fread). Prefer to use the templated Read methods.
Read(T &)	Read a single object, returning true on success.
ReadImpl(T &, GeoStd::TrueType)	Read a single object, returning true on success.
ReadImpl(T &, GeoStd::FalseType)	Read a single object, returning true on success.
ReadToEnd()	Reads the stream to its end and returns the data as a char array.
SetPosition(Geo::u64)	Set the position of the read/write pointer within the stream (prototype matches fseek)
SetPosition(u64)	Set the position of the read/write pointer within the stream (prototype matches fseek)
SetPosition(u64)	Set the position of the read/write pointer within the stream (prototype matches fseek)
Write(const T(&))	Write a fixed size array.
Write(TIter, TIter)	Write a collection of objects, in range [begin, end) as STL-style classes support.
Write(const void *, size_t, size_t)	Write data (prototype matches fwrite). Prefer to use the templated Write methods.
Write(const T &)	Write a single object, returning true on success.
Write(const void *, size_t, size_t)	Write data (prototype matches fwrite). Prefer to use the templated Write methods.

Enums

Name	Description
EStreamMode	An IGeoStream is open in either esmRead or esmWrite mode.

Geo::GeoZLibFileStream::~GeoZLibFileStream

public: ~GeoZLibFileStream()

Closes current file, if open.

virtual Geo::IGeoInputStream::~IGeoInputStream

public: virtual ~IGeoInputStream()

Deleting a stream should behave like a close operation.

virtual Geo::IGeoStream::~IGeoStream

public: virtual ~IGeoStream()

Deleting a stream should behave like a close operation.

virtual u32 Geo::IGeoStream::BeginType

public: virtual u32 BeginType
(
TypeId type,
u32 count
)

Provide information about the typed data written to the stream.

bool Geo::GeoZLibFileStream::Close

public: bool Close()

Close current file, if any.

virtual void Geo::IGeoStream::EndType

public: virtual void EndType
(
u32 index
)

Provide information about the typed data written to the stream.

Geo::GeoZLibFileStream::GeoZLibFileStream

public: GeoZLibFileStream()

Create with no attached file.

const char * Geo::GeoZLibFileStream::GetFilename

public: const char * GetFilename() const

Return the filename with which this stream was opened (not available if created with FILE*)

u64 Geo::GeoZLibFileStream::GetPosition

public: virtual u64 GetPosition() const

Return the position of the read/write pointer within the stream (prototype matches ftell)

virtual Geo::u64 Geo::IGeoInputStream::GetPosition

public: Geo::u64 GetPosition() const

Return the position of the read/write pointer within the stream (prototype matches ftell)

virtual u64 Geo::IGeoStream::GetPosition

public: u64 GetPosition() const

Return the position of the read/write pointer within the stream (prototype matches ftell)

virtual bool Geo::IGeoInputStream::IsEof

public: bool IsEof() const

Is the read pointer at the end of the file (as with feof, only returns true if you have read past end)

virtual bool Geo::IGeoStream::IsEof

public: bool IsEof() const

Is the read/write pointer at the end of the file (as with feof, only returns true if you have read past end)

bool Geo::GeoZLibFileStream::IsEof

public: virtual bool IsEof() const

Is the read/write pointer at the end of the file (as with feof, only returns true if you have read past end)

virtual bool Geo::IGeoStream::IsOk

public: bool IsOk() const

Tests if the stream is valid.

virtual bool Geo::IGeoInputStream::IsOk

public: bool IsOk() const

Tests if the stream is valid.

bool Geo::GeoZLibFileStream::IsOk

public: virtual bool IsOk() const

Tests if the stream is valid.

bool Geo::GeoZLibFileStream::Open

public: bool Open
(
char const * filename,
EStreamMode mode
)

Close current file, if any, and open filename.

bool Geo::IGeoInputStream::Read

public: bool Read
(
T(&) a
)

Read a fixed size array.

size_t Geo::GeoZLibFileStream::Read

public: virtual size_t Read
(
void * pData,
size_t size,
size_t count
)

Read data (prototype matches fread). Prefer to use the templated Read methods.

bool Geo::IGeoInputStream::Read

public: bool Read
(
TIter begin,
TIter end
)

Read a collection of objects, returning true on success.

Object must be considered blittable (see IsBlittable<T>). Note that the storage must have been pre-allocated as it will write directly to the iterators provided. Given that we do not have the STL-style 'back-inserter' classes, for GeoArrays you should use the ReadArray helper function.

virtual size_t Geo::IGeoInputStream::Read

public: size_t Read
(
void * pData,
size_t size,
size_t count
)

Read data (prototype matches fread). Prefer to use the templated Read methods.

GEO_FORCE_INLINE bool Geo::IGeoInputStream::Read

public: GEO_FORCE_INLINE bool Read
(
T & object
)

Read a single object, returning true on success.

There must either be a ReadObject overload for T, or T be considered blittable (see IsBlittable<T>).

bool Geo::IGeoInputStream::ReadImpl

public: bool ReadImpl
(
T & object,
GeoStd::TrueType
)

Read a single object, returning true on success.

There must either be a ReadObject overload for T, or T be considered blittable (see IsBlittable<T>).

bool Geo::IGeoInputStream::ReadImpl

public: bool ReadImpl
(
T & object,
GeoStd::FalseType
)

Read a single object, returning true on success.

There must either be a ReadObject overload for T, or T be considered blittable (see IsBlittable<T>).

virtual Geo::GeoArray<char> Geo::IGeoInputStream::ReadToEnd

public: virtual Geo::GeoArray< char > ReadToEnd()

Reads the stream to its end and returns the data as a char array.

virtual bool Geo::IGeoInputStream::SetPosition

public: bool SetPosition
(
Geo::u64 pos
)

Set the position of the read/write pointer within the stream (prototype matches fseek)

virtual bool Geo::IGeoStream::SetPosition

public: bool SetPosition
(
u64 pos
)

Set the position of the read/write pointer within the stream (prototype matches fseek)

bool Geo::GeoZLibFileStream::SetPosition

public: virtual bool SetPosition
(
u64 pos
)

Set the position of the read/write pointer within the stream (prototype matches fseek)

bool Geo::IGeoStream::Write

public: bool Write
(
const T(&) a
)

Write a fixed size array.

bool Geo::IGeoStream::Write

public: bool Write
(
TIter begin,
TIter end
)

Write a collection of objects, in range [begin, end) as STL-style classes support.

Objects have same requirements single object Write (see IsBlittable<T>).

virtual size_t Geo::IGeoStream::Write

public: size_t Write
(
const void * pData,
size_t size,
size_t count
)

Write data (prototype matches fwrite). Prefer to use the templated Write methods.

GEO_FORCE_INLINE bool Geo::IGeoStream::Write

public: GEO_FORCE_INLINE bool Write
(
const T & object
)

Write a single object, returning true on success.

There must either be a WriteObject overload for T, or T must be blittable (see IsBlittable<T>).

size_t Geo::GeoZLibFileStream::Write

public: virtual size_t Write
(
const void * pData,
size_t size,
size_t count
)

Write data (prototype matches fwrite). Prefer to use the templated Write methods.

EStreamMode

public: enum EStreamMode
{
esmWrite,
esmRead
}

An IGeoStream is open in either esmRead or esmWrite mode.

enumerators

esmWrite
esmRead