Version 5.0 The LEDA User Manual

3. Operations
Standard Operations
void C.encode( ) encodes the source stream and writes the output to
the target stream.
void C.decode( ) decodes the source stream and writes the output to
the target stream.
uint32
C.calculate length of encoded data(uint32 input length)
calculates the length (in bytes) of the output when
encoding some input of the given length with the current
settings. (This function is helpful for encoding
memory chunks (see below).)
uint32 C.encode memory chunk(const char ∗ in buf , uint32 in len, char ∗ out buf ,
uint32 out len)
encodes the memory chunk starting at in buf with
size in len into the buffer starting at out buf with size
out len. The function returns actual length of the
encoded chunk which may be smaller than out len. If
the output buffer is too small for the encoded data
the failure flag will be set (see below). Note: The
output data is slightly longer than the input data due
to padding and header data.
uint32 C.decode memory chunk(const char ∗ in buf , uint32 in len, char ∗ out buf ,
uint32 out len)
decodes a memory chunk. The meaning of the parameters
and the return value is the same as in the
previous function.
streambuf ∗ C.get src stream( ) returns the current source stream.
void
C.set src stream(streambuf ∗ src stream, bool own stream = false)
sets the source stream (cf. constructor).
void C.set src file(const char ∗ file name)
sets a file as source stream.
streambuf ∗ C.get tgt stream( ) returns the current target stream.
void
void
C.set tgt stream(streambuf ∗ tgt stream, bool own Stream = false)
sets the target stream (cf. constructor).
C.set tgt file(const char ∗ file name)
sets a file as target stream.