mm::PdfCanvasInputDevice Class Reference

#include <PdfCanvasInputDevice.h>

Inheritance diagram for mm::PdfCanvasInputDevice:

Public Member Functions
bool	TryGetChar (char &ch) override
size_t	Tell () override
int	Look () override
size_t	Read (char *buffer, size_t size) override
bool	Eof () const override
bool	IsSeekable () const override
Public Member Functions inherited from mm::PdfInputDevice
	PdfInputDevice (const std::string_view &filename)
	PdfInputDevice (const char *buffer, size_t len)
	PdfInputDevice (std::istream &stream)
virtual	~PdfInputDevice ()
virtual void	Close ()
virtual size_t	Tell ()
int	GetChar ()
virtual bool	TryGetChar (char &ch)
virtual int	Look ()
void	Seek (std::streamoff off, std::ios_base::seekdir dir=std::ios_base::beg)
virtual size_t	Read (char *buffer, size_t size)
virtual bool	Eof () const
virtual bool	IsSeekable () const

Detailed Description

There are Pdfs spanning delimiters or begin/end tags into contents streams. Let's create a device correctly spanning I/O reads into these

Member Function Documentation

Eof()

bool mm::PdfCanvasInputDevice::Eof ( ) const

inlineoverridevirtual

Returns

True if the stream is at EOF

Reimplemented from mm::PdfInputDevice.

IsSeekable()

bool mm::PdfCanvasInputDevice::IsSeekable ( ) const

inlineoverridevirtual

Returns

True if the stream is seekable

Reimplemented from mm::PdfInputDevice.

Look()

int PdfCanvasInputDevice::Look ( )

overridevirtual

Peek at next char in stream. /returns the next char in the stream

Reimplemented from mm::PdfInputDevice.

Read()

size_t PdfCanvasInputDevice::Read ( char *  buffer, size_t  size  )

overridevirtual

Read a certain number of bytes from the input device.

Parameters

buffer	store bytes in this buffer. The buffer has to be large enough.
size	number of bytes to read.

Returns

the number of bytes that have been read. 0 if the device reached eof

Reimplemented from mm::PdfInputDevice.

Tell()

size_t PdfCanvasInputDevice::Tell ( )

overridevirtual

Get the current position in file. /returns the current position in the file

Reimplemented from mm::PdfInputDevice.

TryGetChar()

bool PdfCanvasInputDevice::TryGetChar ( char &  ch )

overridevirtual

Get next char from stream.

Returns

the next character from the stream

Reimplemented from mm::PdfInputDevice.