/*
 * iobuf.c
 *
 * An I/O buffer library based on sbuf.
 *
 * History:
 *      12/03/2014 Creation.
 *      14/03/2014 Compilation fixes.
 *
 * Author: Dario Rodriguez dario@softhome.net
 * This library is licensed on the terms of the GNU LGPL v2+
 */

#include <stdlib.h>
#include <string.h>
#include "iobuf.h"

/* exported funcions */
siobuf *
iobuf_init(int insize,int outsize)
{
        siobuf *iobuf;
        if((iobuf=malloc(sizeof(siobuf)))==NULL)
                return(NULL);
        memset(iobuf,0,sizeof(siobuf));
        if((iobuf->in=sbuf_init(insize))==NULL) {
                free(iobuf),iobuf=NULL;
                return(NULL);
        }
        if((iobuf->out=sbuf_init(outsize))==NULL) {
                sbuf_free(iobuf->in),iobuf->in=NULL;
                free(iobuf),iobuf=NULL;
                return(NULL);
        }
        return(iobuf);
}

siobuf *
iobuf_staticinit(siobuf *uninitiobuf, sbuf *uninitinbuf, sbuf *uninitoutbuf,int insize, int outsize, char *inbuf, char *outbuf)
{
        memset(uninitiobuf,0,sizeof(siobuf));
        if((uninitiobuf->in=sbuf_staticinit(uninitinbuf,insize,inbuf))==NULL)
                return(NULL);
        if((uninitiobuf->out=sbuf_staticinit(uninitoutbuf,outsize,outbuf))==NULL)
                return(NULL);
        return(uninitiobuf);
}

void
iobuf_free(siobuf *iobuf)
{
        if(iobuf==NULL)
                return;
        if(iobuf->in!=NULL)
                sbuf_free(iobuf->in),iobuf->in=NULL;
        if(iobuf->out!=NULL)
                sbuf_free(iobuf->out),iobuf->out=NULL;
        free(iobuf);
}

void
iobuf_staticfree(siobuf *iobuf)
{
        if(iobuf==NULL)
                return;
        sbuf_staticfree(iobuf->in),iobuf->in=NULL;
        sbuf_staticfree(iobuf->out),iobuf->out=NULL;
        return;
}