class Geo::IGeoInputStream
An IGeoInputStream allows you to read memory/files in a consistent manner, and is an extension point for users wishing to control where data is stored.
The simplest implementation is
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GeoFileStream which stores/loads content from a file. |
Functions
| Name | Description |
|---|---|
| ~IGeoInputStream() | Deleting a stream should behave like a close operation. |
| 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) |
| IsOk() | Tests if the stream is valid. |
| Read(T &) | Read a single object, returning true on success. |
| 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(T(&)) | Read a fixed size array. |
| 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) |
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virtual Geo::IGeoInputStream::~IGeoInputStream
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public: virtual ~IGeoInputStream()
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Deleting a stream should behave like a close operation.
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virtual Geo::u64 Geo::IGeoInputStream::GetPosition
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public: Geo::u64 GetPosition() const
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Return the position of the read/write pointer within the stream (prototype matches ftell)
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virtual bool Geo::IGeoInputStream::IsEof
...
public: bool IsEof() const
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Is the read pointer at the end of the file (as with feof, only returns true if you have read past end)
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virtual bool Geo::IGeoInputStream::IsOk
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public: bool IsOk() const
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Tests if the stream is valid.
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GEO_FORCE_INLINE bool Geo::IGeoInputStream::Read
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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>).
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virtual size_t Geo::IGeoInputStream::Read
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public: size_t Read
(
void * pData,
size_t size,
size_t count
)
...
Read data (prototype matches fread). Prefer to use the templated Read methods.
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bool Geo::IGeoInputStream::Read
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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.
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bool Geo::IGeoInputStream::Read
...
public: bool Read
(
T(&) a
)
...
Read a fixed size array.
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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>).
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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>).
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virtual Geo::GeoArray<char> Geo::IGeoInputStream::ReadToEnd
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public: virtual Geo::GeoArray< char > ReadToEnd()
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Reads the stream to its end and returns the data as a char array.
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virtual bool Geo::IGeoInputStream::SetPosition
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public: bool SetPosition
(
Geo::u64 pos
)
...
Set the position of the read/write pointer within the stream (prototype matches fseek)