src/cbuf/read.c File Reference

#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include "cbuf.h"
#include "stream.h"

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Functions
ssize_t	cbufRead (Cbuf this, Stream st)

---

Detailed Description

Author:

Georg Hopp

Copyright © 2012 Georg Hopp

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

Definition in file read.c.

---

Function Documentation

ssize_t cbufRead	(	Cbuf	this,
		Stream	st
	)

Definition at line 32 of file read.c.

{
        ssize_t rrsize = 0;
        size_t  rsize  = cbufGetFree(this);

        if (0 == rsize) {
                errno = ECBUFOVFL;
                return -1;
        }

        rrsize = streamRead(st, cbufGetWrite(this), rsize);

        switch (rrsize) {
                case  0:
                        rrsize = -2;
                        // DROP THROUGH

                case -1:
                        break;

                default:
                        cbufIncWrite(this, rrsize);
                        break;
        }

        return rrsize;
}

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