Inheritance diagram for SpectMorph::StdioSubIn:

Public Member Functions
int	get_byte ()
int	read (void *ptr, size_t size)
bool	skip (size_t size)
unsigned char *	mmap_mem (size_t &remaining)
size_t	get_pos ()
GenericIn *	open_subfile (size_t pos, size_t len)
Static Public Member Functions
static GenericIn *	open (const std::string &filename, size_t pos, size_t len)

Member Function Documentation

int StdioSubIn::get_byte ( ) [virtual]

Reads one byte from the input stream.

Returns:: the byte if successful, or EOF on end of file

Implements SpectMorph::GenericIn.

size_t StdioSubIn::get_pos ( ) [virtual]

Get input stream position.

Returns:: the position in the input stream

Implements SpectMorph::GenericIn.

unsigned char * StdioSubIn::mmap_mem ( size_t & remaining ) [virtual]

Try to access the memory of a memory-based input stream. This will fail for streams that are not memory mapped. This function is useful because it allows writing faster code than with read(); however, an alternative way of reading the data must be used if this function fails.

Parameters:

remaining is set to the number to the number of bytes that are available

Returns:: pointer to the memory, or NULL if input is not memory mapped

Implements SpectMorph::GenericIn.

GenericIn * StdioSubIn::open_subfile	(	size_t	pos,
		size_t	len
	)		`[virtual]`

Open a new input stream that contains a part of the original file.

Parameters:

pos	start position in the input stream (offset like get_pos())
len	length of the new subfile object

Returns:: a GenericIn object with the subfile or NULL on error (open failed)

Implements SpectMorph::GenericIn.

int StdioSubIn::read	(	void *	ptr,
		size_t	size
	)		`[virtual]`

Reads a block of binary input data.

Parameters:

ptr	pointer to the buffer for the data read
size	number of bytes to be read

Returns:: the number of bytes successfully read or 0; can be less than size on EOF/error

Implements SpectMorph::GenericIn.

bool StdioSubIn::skip ( size_t size ) [virtual]

Skips a block of input data.

Parameters:

size	number of bytes to be skipped

Returns:: true if the number of bytes was available and could be skipped, false otherwise

Implements SpectMorph::GenericIn.

The documentation for this class was generated from the following files:

lib/smstdiosubin.hh
lib/smstdiosubin.cc

SpectMorph::StdioSubIn Class Reference

Public Member Functions

Static Public Member Functions

Member Function Documentation