199 lines
6.9 KiB
C
199 lines
6.9 KiB
C
/*
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* COMPONENT_NAME: BLDPROCESS
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*
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* FUNCTIONS: defined
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* path
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*
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* ORIGINS: 27,71
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*
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* This module contains IBM CONFIDENTIAL code. -- (IBM
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* Confidential Restricted when combined with the aggregated
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* modules for this product)
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* SOURCE MATERIALS
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*
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* (C) COPYRIGHT International Business Machines Corp. 1994
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* All Rights Reserved
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* US Government Users Restricted Rights - Use, duplication or
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* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
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*/
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/*
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* @OSF_FREE_COPYRIGHT@
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* COPYRIGHT NOTICE
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* Copyright (c) 1992, 1991, 1990
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* Open Software Foundation, Inc.
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*
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* Permission is hereby granted to use, copy, modify and freely distribute
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* the software in this file and its documentation for any purpose without
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* fee, provided that the above copyright notice appears in all copies and
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* that both the copyright notice and this permission notice appear in
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* supporting documentation. Further, provided that the name of Open
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* Software Foundation, Inc. ("OSF") not be used in advertising or
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* publicity pertaining to distribution of the software without prior
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* written permission from OSF. OSF makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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* COPYRIGHT NOTICE
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* Copyright (c) 1992, 1991, 1990
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* Open Software Foundation, Inc.
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*
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* Permission is hereby granted to use, copy, modify and freely distribute
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* the software in this file and its documentation for any purpose without
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* fee, provided that the above copyright notice appears in all copies and
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* that both the copyright notice and this permission notice appear in
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* supporting documentation. Further, provided that the name of Open
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* Software Foundation, Inc. ("OSF") not be used in advertising or
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* publicity pertaining to distribution of the software without prior
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* written permission from OSF. OSF makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* Copyright (c) 1992 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software_Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* HISTORY
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* $Log: path.c,v $
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* Revision 1.7.7.1 1993/11/08 17:58:54 damon
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* CR 463. Pedantic changes
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* [1993/11/08 16:08:41 damon]
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*
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* Revision 1.7.5.2 1993/04/27 21:27:03 damon
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* CR 463. Made pedantic changes
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* [1993/04/27 21:26:41 damon]
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*
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* Revision 1.7.2.3 1992/12/03 17:21:28 damon
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* ODE 2.2 CR 183. Added CMU notice
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* [1992/12/03 17:08:34 damon]
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*
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* Revision 1.7.2.2 1992/12/02 20:26:27 damon
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* ODE 2.2 CR 183. Added CMU notice
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* [1992/12/02 20:23:25 damon]
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*
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* Revision 1.7 1991/12/05 21:05:32 devrcs
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* Added _FREE_ to copyright marker
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* [91/08/01 08:11:44 mckeen]
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*
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* rcsid/RCSfile header cleanup
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* [90/12/01 17:24:46 dwm]
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*
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* Revision 1.5 90/10/07 20:04:01 devrcs
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* Added EndLog Marker.
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* [90/09/28 20:10:05 gm]
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*
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* Revision 1.4 90/08/09 14:23:33 devrcs
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* Moved here from usr/local/sdm/lib/libsb.
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* [90/08/05 12:47:45 gm]
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*
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* Revision 1.3 90/06/29 14:38:59 devrcs
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* Moved here from defunct libcs library.
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* [90/06/23 14:21:29 gm]
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*
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* Revision 1.2 90/01/02 19:27:07 gm
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* Fixes for first snapshot.
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*
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* Revision 1.1 89/12/26 10:15:22 gm
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* Current version from CMU.
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* [89/12/23 gm]
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*
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* Copied verbatim from PDP-11. Still as messy as ever.
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* Some people have asked for a modification (I think that's a better
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* idea than a new routine) which will change the directory name
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* into an absolute pathname if it isn't one already. The change
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* involves doing a getwd() and prepending that if appropriate, with
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* a "/" in between that and the directory part of the path.
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* If you want to be cute, you can also resolve ".."s at that time.
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* [79/11/20 sas]
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*
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* $EndLog$
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*/
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#ifndef lint
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static char sccsid[] = "@(#)00 1.1 src/bldenv/sbtools/libode/path.c, bldprocess, bos412, GOLDA411a 1/19/94 17:41:47";
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#endif /* not lint */
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#if !defined(lint) && !defined(_NOIDENT)
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static char rcsid[] = "@(#)$RCSfile: path.c,v $ $Revision: 1.7.7.1 $ (OSF) $Date: 1993/11/08 17:58:54 $";
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#endif
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/* path -- break filename into directory and file
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*
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* path (filename,direc,file);
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* char *filename,*direc,*file;
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* filename is input; direc and file are output (user-supplied).
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* file will not have any trailing /; direc might.
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*
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* Note these rules:
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* 1. trailing / are ignored (except as first character)
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* 2. x/y is x;y where y contains no / (x may contain /)
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* 3. /y is /;y where y contains no /
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* 4. y is .;y where y contains no /
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* 5. is .;. (null filename)
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* 6. / is /;. (the root directory)
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*
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* Algorithm is this:
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* 1. delete trailing / except in first position
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* 2. if any /, find last one; change to null; y++
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* else y = x; (x is direc; y is file)
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* 3. if y is null, y = .
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* 4. if x equals y, x = .
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* else if x is null, x = /
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*/
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#include <ode/util.h>
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void
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path ( const char *original, char *direc, char *file )
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{
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register char *y;
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/* x is direc */
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register char *p;
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/* copy and note the end */
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p = (char *)original;
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y = direc;
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while ((*y++ = *p++)) ; /* copy string */
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/* y now points to first char after null */
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--y; /* y now points to null */
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--y; /* y now points to last char of string before null */
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/* chop off trailing / except as first character */
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while (y>direc && *y == '/') --y; /* backpedal past / */
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/* y now points to char before first trailing / or null */
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*(++y) = 0; /* chop off end of string */
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/* y now points to null */
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/* find last /, if any. If found, change to null and bump y */
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while (y>direc && *y != '/') --y;
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/* y now points to / or direc. Note *direc may be / */
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if (*y == '/') {
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*y++ = 0;
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}
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/* find file name part */
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if (*y) strcpy (file,y);
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else strcpy (file,".");
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/* find directory part */
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if (direc == y) strcpy (direc,".");
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else if (*direc == 0) strcpy (direc,"/");
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/* else direc already has proper value */
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}
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