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    Length: 2917 (0xb65)
    Types: TextFile
    Names: »qb2pe.c«

└─⟦3d0c2be1b⟧ Bits:30001254 ISODE-5.0 Tape
    └─⟦eba4602b1⟧ »./isode-5.0.tar.Z« 
        └─⟦d3ac74d73⟧ 
            └─⟦this⟧ »isode-5.0/psap/qb2pe.c« 

TextFile

/* qb2pe.c - create a variable-depth Inline CONStructor PElement */

#ifndef	lint
static char *rcsid = "$Header: /f/osi/psap/RCS/qb2pe.c,v 6.0 89/03/18 23:39:08 mrose Rel $";
#endif

/* 
 * $Header: /f/osi/psap/RCS/qb2pe.c,v 6.0 89/03/18 23:39:08 mrose Rel $
 *
 *
 * $Log:	qb2pe.c,v $
 * Revision 6.0  89/03/18  23:39:08  mrose
 * Release 5.0
 * 
 */

/*
 *				  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"
#include "tailor.h"

/* \f

 */

PE	qb2pe_aux ();

/* \f

 */

PE	qb2pe (qb, len, depth, result)
register struct qbuf *qb;
int	len,
	depth;
int	*result;
{
    char   *sp;
    register struct qbuf *qp,
			 *qpp;
    PE	    pe;

    *result = PS_ERR_NONE;
    if (depth <= 0)
	return NULLPE;

    if ((qp = qb -> qb_forw) != qb && qp -> qb_forw == qb)
	sp = qp -> qb_data;
    else {
	qp = NULL;
	
	if ((sp = qb2str (qb)) == NULL) {
	    *result = PS_ERR_NMEM;
	    return NULLPE;
	}
    }

    if (pe = qb2pe_aux (sp, len, depth, result)) {
	if (qp) {
	    pe -> pe_realbase = (char *) qp;

	    remque (qp);
	}
	else {
	    pe -> pe_realbase = sp;

	    for (qp = qb -> qb_forw; qp != qb; qp = qpp) {
		qpp = qp -> qb_forw;
		remque (qp);

		free ((char *) qp);
	    }
	}
	pe -> pe_inline = 0;
    }
    else
	if (qp == NULL)
	    free (sp);

#ifdef	DEBUG
    if (pe && (psap_log -> ll_events & LLOG_PDUS))
	pe2text (psap_log, pe, 1, len);
#endif

    return pe;
}

/* \f

 */

static PE  qb2pe_aux (s, len, depth, result)
register char  *s;
register int	len;
int	depth;
int	*result;
{
    int	    i;
    register PElementData data;
    register PE	    pe,
		    p,
		    q;
    PE	    *r,
	    *rp;

    depth--;

    if ((pe = str2pe (s, len, &i, result)) == NULLPE)
	return NULLPE;

    if (pe -> pe_form == PE_FORM_ICONS) {
	pe -> pe_form = PE_FORM_CONS;
	pe -> pe_prim = NULLPED, pe -> pe_inline = 0;
	pe -> pe_len -= pe -> pe_ilen;

	p = NULLPE, r = &pe -> pe_cons;
	for (s += pe -> pe_ilen, len -= pe -> pe_ilen;
	         len > 0;
	         s += i, len -= i) {
	    if ((p = str2pe (s, len, &i, result)) == NULLPE)
		goto out;

	    if (p -> pe_form == PE_FORM_ICONS) {
		if (depth > 0) {
		    if ((q = qb2pe_aux ((char *) p -> pe_prim, i, depth,
					result)) == NULLPE)
			goto out;
		    pe_free (p);
		    p = q;
		}
		else {
		    if ((data = PEDalloc (i)) == NULL) {
			*result = PS_ERR_NMEM;
			goto out;
		    }
		    PEDcpy (p -> pe_prim, data, i);
		    p -> pe_prim = data, p -> pe_inline = 0;
		}
	    }

	    *r = p, rp = r, r = &p -> pe_next;
	}

	if (p && p -> pe_class == PE_CLASS_UNIV && p -> pe_id == PE_UNIV_EOC) {
	    pe_free (p);
	    *rp = NULLPE;
	}
    }
    
    return pe;

out: ;
    pe_free (pe);
    return NULLPE;
}