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/*
* SCCS: @(#)lsdir.c 1.4 (99/07/07)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1996 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.
* A copy of the end-user licence agreement is contained in the file
* Licence which accompanies this distribution.
*
* 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: @(#)lsdir.c 1.4 99/07/07 TETware release 3.4
NAME: lsdir.c
PRODUCT: TETware
AUTHOR: Andrew Dingwall, UniSoft Ltd.
DATE CREATED: October 1996
DESCRIPTION:
function to generate a directory listing
this function moved from tccd/tsfile.c to here
MODIFICATIONS:
Andrew Dingwall, UniSoft Ltd., March 1998
Excluded "." from the list of directory entries returned by
tcf_lsdir() - it's not used anywhere.
Andrew Dingwall, UniSoft Ltd., November 1998
added <sys/types.h> for the benefit of FreeBSD
Andrew Dingwall, UniSoft Ltd., May 1999
If the directory is empty (except for . and ..), return an empty
list rather than an error condition.
Aaron Plattner, April 2010
Fixed warnings when compiled with GCC's -Wall option.
************************************************************************/
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#include "dtmac.h"
#include "tetdir.h"
#include "error.h"
#include "dtetlib.h"
#include "tcclib.h"
/*
** tcf_lsdir() - return a pointer to a list of pointers to directory
** entries
**
** return (char **) 0 on error
**
** the return list excludes "." and ".."
*/
char **tcf_lsdir(dir)
char *dir;
{
register DIR *dirp;
register struct dirent *dp;
register int n, nfiles;
register char **fip;
char **files = (char **) 0;
int flen = 0;
/* open the directory */
if ((dirp = OPENDIR(dir)) == (DIR *) 0) {
error(errno, "can't open", dir);
return((char **) 0);
}
/* create an empty list */
if (BUFCHK((char **) &files, &flen, (int) sizeof *files) < 0)
return((char **) 0);
*files = (char *) 0;
/* count the files in the directory and store their names */
nfiles = 0;
while ((dp = READDIR(dirp)) != (struct dirent *) 0) {
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
n = (nfiles + 2) * sizeof *files;
if (BUFCHK((char **) &files, &flen, n) < 0) {
break;
}
fip = files + nfiles;
if ((*fip = tet_strstore(dp->d_name)) == (char *) 0) {
break;
}
*++fip = (char *) 0;
nfiles++;
}
(void) CLOSEDIR(dirp);
return(files);
}
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