usr/othersrc/contrib/isode/psap/str2qb.c

/* str2qb.c - string to qbuf */

#ifndef lint
static char *rcsid = "$Header: /f/osi/psap/RCS/str2qb.c,v 7.3 91/02/22 09:37:10 mrose Interim $";
#endif

/*
 * $Header: /f/osi/psap/RCS/str2qb.c,v 7.3 91/02/22 09:37:10 mrose Interim $
 *
 *
 * $Log:        str2qb.c,v $
 * Revision 7.3  91/02/22  09:37:10  mrose
 * Interim 6.8
 *
 * Revision 7.2  90/04/18  08:51:02  mrose
 * touch-up
 *
 * Revision 7.1  90/02/19  13:09:48  mrose
 * update
 *
 * Revision 7.0  89/11/23  22:13:49  mrose
 * Release 6.0
 *
 */

/*
 *                                NOTICE
 *
 *    Acquisition, use, and distribution of this module and related
 *    materials are subject to the restrictions of a license agreement.
 *    Consult the Preface in the User's Manual for the full terms of
 *    this agreement.
 *
 */


/* LINTLIBRARY */

#include <stdio.h>
#include "psap.h"

/* \f */

struct qbuf *str2qb (s, len, head)
char   *s;
int     len,
        head;
{
    register struct qbuf *qb,
                         *pb;

    if ((pb = (struct qbuf *) malloc ((unsigned) (sizeof *pb + len))) == NULL)
        return NULL;

    if (head) {
        if ((qb = (struct qbuf *) malloc (sizeof *qb)) == NULL) {
            free ((char *) pb);
            return NULL;
        }
        qb -> qb_forw = qb -> qb_back = qb;
        qb -> qb_data = NULL, qb -> qb_len = len;
        insque (pb, qb);
    }
    else {
        pb -> qb_forw = pb -> qb_back = pb;
        qb = pb;
    }

    pb -> qb_data = pb -> qb_base;
    if ((pb -> qb_len = len) > 0 && s)
        bcopy (s, pb -> qb_data, len);

    return qb;
}