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.TH TERMKEY_PUSH_BYTES 3
.SH NAME
termkey_push_bytes \- supply more bytes to the input buffer
.SH SYNOPSIS
.nf
.B #include <termkey.h>
.sp
.BI "size_t termkey_push_bytes(TermKey *" tk ", const char *" bytes ", size_t " len ");
.fi
.sp
Link with \fI-ltermkey\fP.
.SH DESCRIPTION
\fBtermkey_push_bytes\fP() allows more bytes of input to be supplied directly into the input buffer of the \fBtermkey\fP(7) instance. If there was no buffer space remaining then -1 is returned with \fIerrno\fP set to \fBENOMEM\fP.
.PP
This function, along with \fBtermkey_getkey\fP(3), makes it possible to use the \fBtermkey\fP instance with a source of bytes other than from reading a filehandle.
.PP
For synchronous usage, \fBtermkey_waitkey\fP(3) performs the input blocking task. For use against a regular stream filehandle that supports \fBread\fP(2), see \fBtermkey_advisereadable\fP(3).
.SH "RETURN VALUE"
\fBtermkey_push_bytes\fP() the number of bytes consumed from the input (which may be smaller than the length provided, if the buffer runs out of space) or -1 cast to \fBsize_t\fP if an error occurs, in which case \fIerrno\fP is set accordingly.
.SH "SEE ALSO"
.BR termkey_getkey (3),
.BR termkey_advisereadable (3),
.BR termkey (7)
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