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/*
* SCCS: @(#)ftoa.c 1.9 (98/08/28)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1992 X/Open Company Limited
*
* All rights reserved. No part of this source code may be reproduced,
* stored in a retrieval system, or transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording or otherwise,
* except as stated in the end-user licence agreement, without the prior
* permission of the copyright owners.
*
* X/Open and the 'X' symbol are trademarks of X/Open Company Limited in
* the UK and other countries.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/************************************************************************
SCCS: @(#)ftoa.c 1.9 98/08/28 TETware release 3.3
NAME: ftoa.c
PRODUCT: TETware
AUTHOR: Andrew Dingwall, UniSoft Ltd.
DATE CREATED: June 1992
DESCRIPTION:
function to return a printable representation of a set of flags
MODIFICATIONS:
Andrew Dingwall, UniSoft Ltd., August 1996
add a pool of re-usable buffers so that more than one tet_f2a()
value may be passed to a reporting function
************************************************************************/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "ptab.h"
#include "ltoa.h"
#include "ftoa.h"
#include "dtetlib.h"
/*
** tet_f2a() - return printable representation of ptab pt_flags value
**
** the return value points to a static area whose contents are
** overwritten after NFBUF calls
*/
char *tet_f2a(fval, flags, nflags)
int fval, nflags;
struct flags flags[];
{
static struct {
char *bp;
int buflen;
} bufstruct[NFBUF];
static int count;
char **bpp;
int *blp;
register struct flags *fp;
register char *p1, *p2;
register unsigned ftmp;
register int n, needlen;
if (++count >= NFBUF)
count = 0;
bpp = &bufstruct[count].bp;
blp = &bufstruct[count].buflen;
/* work out the required output buffer size */
for (needlen = 0, ftmp = fval, n = 0; ftmp; ftmp >>= 1, n++) {
if (!(ftmp & 1))
continue;
for (fp = &flags[nflags - 1]; fp >= flags; fp--)
if (fp->fl_value == (1 << n)) {
needlen += strlen(fp->fl_name) + 1;
break;
}
if (fp < flags)
needlen += strlen(tet_i2o(1 << n)) + 1;
}
/* get the buffer to put the flag names in */
if (BUFCHK(bpp, blp, TET_MAX(needlen, 2)) < 0)
return("");
/* copy the flag names in to the buffer */
for (p1 = *bpp, ftmp = fval, n = 0; ftmp; ftmp >>= 1, n++) {
if (!(ftmp & 1))
continue;
for (fp = &flags[nflags - 1]; fp >= flags; fp--)
if (fp->fl_value == (1 << n)) {
for (p2 = fp->fl_name; *p2; p2++)
*p1++ = *p2;
break;
}
if (fp < flags)
for (p2 = tet_i2o(1 << n); *p2; p2++)
*p1++ = *p2;
if (ftmp & ~1)
*p1++ = '|';
}
if (p1 == *bpp)
*p1++ = '0';
*p1 = '\0';
return(*bpp);
}
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