#include <wx/wfstream.h>
This class represents data read in from a file.
There are actually two such groups of classes: this one is based on wxFFile whereas wxFileInputStream is based in the wxFile class.
Note that wxInputStream::SeekI() can seek beyond the end of the stream (file) and will thus not return wxInvalidOffset for that.
Public Member Functions | |
wxFFileInputStream (const wxString &filename, const wxString &mode="rb") | |
Opens the specified file using its filename name using the specified mode. More... | |
wxFFileInputStream (wxFFile &file) | |
Initializes a file stream in read-only mode using the file I/O object file. More... | |
wxFFileInputStream (FILE *fp) | |
Initializes a file stream in read-only mode using the specified file pointer fp. More... | |
virtual | ~wxFFileInputStream () |
Destructor. More... | |
bool | IsOk () const |
Returns true if the stream is initialized and ready. More... | |
wxFFile * | GetFile () const |
Returns the underlying file object. More... | |
Public Member Functions inherited from wxInputStream | |
wxInputStream () | |
Creates a dummy input stream. More... | |
virtual | ~wxInputStream () |
Destructor. More... | |
virtual bool | CanRead () const |
Returns true if some data is available in the stream right now, so that calling Read() wouldn't block. More... | |
virtual bool | Eof () const |
Returns true after an attempt has been made to read past the end of the stream. More... | |
int | GetC () |
Returns the first character in the input queue and removes it, blocking until it appears if necessary. More... | |
virtual size_t | LastRead () const |
Returns the last number of bytes read. More... | |
virtual char | Peek () |
Returns the first character in the input queue without removing it. More... | |
virtual wxInputStream & | Read (void *buffer, size_t size) |
Reads the specified amount of bytes and stores the data in buffer. More... | |
wxInputStream & | Read (wxOutputStream &stream_out) |
Reads data from the input queue and stores it in the specified output stream. More... | |
bool | ReadAll (void *buffer, size_t size) |
Reads exactly the specified number of bytes into the buffer. More... | |
virtual wxFileOffset | SeekI (wxFileOffset pos, wxSeekMode mode=wxFromStart) |
Changes the stream current position. More... | |
virtual wxFileOffset | TellI () const |
Returns the current stream position or wxInvalidOffset if it's not available (e.g. More... | |
size_t | Ungetch (const void *buffer, size_t size) |
This function is only useful in read mode. More... | |
bool | Ungetch (char c) |
This function acts like the previous one except that it takes only one character: it is sometimes shorter to use than the generic function. More... | |
Public Member Functions inherited from wxStreamBase | |
wxStreamBase () | |
Creates a dummy stream object. More... | |
virtual | ~wxStreamBase () |
Destructor. More... | |
wxStreamError | GetLastError () const |
This function returns the last error. More... | |
virtual wxFileOffset | GetLength () const |
Returns the length of the stream in bytes. More... | |
virtual size_t | GetSize () const |
This function returns the size of the stream. More... | |
virtual bool | IsSeekable () const |
Returns true if the stream supports seeking to arbitrary offsets. More... | |
void | Reset (wxStreamError error=wxSTREAM_NO_ERROR) |
Resets the stream state. More... | |
bool | operator! () const |
Returns the opposite of IsOk(). More... | |
Additional Inherited Members | |
Protected Member Functions inherited from wxInputStream | |
size_t | OnSysRead (void *buffer, size_t bufsize)=0 |
Internal function. More... | |
Protected Member Functions inherited from wxStreamBase | |
virtual wxFileOffset | OnSysSeek (wxFileOffset pos, wxSeekMode mode) |
Internal function. More... | |
virtual wxFileOffset | OnSysTell () const |
Internal function. More... | |
Opens the specified file using its filename name using the specified mode.
wxFFileInputStream::wxFFileInputStream | ( | wxFFile & | file | ) |
Initializes a file stream in read-only mode using the file I/O object file.
wxFFileInputStream::wxFFileInputStream | ( | FILE * | fp | ) |
Initializes a file stream in read-only mode using the specified file pointer fp.
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virtual |
Destructor.
wxFFile* wxFFileInputStream::GetFile | ( | ) | const |
Returns the underlying file object.
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virtual |
Returns true if the stream is initialized and ready.
Reimplemented from wxStreamBase.
Reimplemented in wxFFileStream.