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/*
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 * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. Neither the name of The TenDRA Project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific, prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
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 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * $Id$
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 */
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/*
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    		 Crown Copyright (c) 1997
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    This TenDRA(r) Computer Program is subject to Copyright
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    owned by the United Kingdom Secretary of State for Defence
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    acting through the Defence Evaluation and Research Agency
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    (DERA).  It is made available to Recipients with a
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    royalty-free licence for its use, reproduction, transfer
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    to other parties and amendment for any purpose not excluding
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    product development provided that any such use et cetera
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    shall be deemed to be acceptance of the following conditions:-
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        (1) Its Recipients shall ensure that this Notice is
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        reproduced upon any copies or amended versions of it;
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        (2) Any amended version of it shall be clearly marked to
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        show both the nature of and the organisation responsible
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        for the relevant amendment or amendments;
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        (3) Its onward transfer from a recipient to another
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        party shall be deemed to be that party's acceptance of
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        these conditions;
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        (4) DERA gives no warranty or assurance as to its
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        quality or suitability for any purpose and DERA accepts
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        no liability whatsoever in relation to any use to which
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        it may be put.
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*/
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/**** file-name.c --- File name manipulation routines.
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 *
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 ** Author: Steve Folkes <smf@hermes.mod.uk>
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 *
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 **** Commentary:
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 *
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 * This file implements the file name manipulation facility specified in the
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 * file "file-name.h".  See that file for more details.
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 *
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 **** Change Log:
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 * $Log: file-name.c,v $
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 * Revision 1.1.1.1  1998/01/17  15:57:18  release
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 * First version to be checked into rolling release.
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 *
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 * Revision 1.3  1995/07/05  11:58:40  smf
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 * Marked possible unused function as such.  Reduced strength of checks.
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 *
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 * Revision 1.2  1994/12/12  11:45:37  smf
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 * Performing changes for 'CR94_178.sid+tld-update' - bringing in line with
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 * OSSG C Coding Standards.
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 *
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 * Revision 1.1.1.1  1994/07/25  16:06:14  smf
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 * Initial import of os-interface shared files.
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 *
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**/
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/****************************************************************************/
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#include "file-name.h"
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#include "cstring.h"
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/*--------------------------------------------------------------------------*/
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CStringP
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file_name_basename(CStringP path)
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{
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    CStringP last = cstring_find_reverse(path, '/');
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    if (last) {
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	return(cstring_duplicate(last + 1));
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    } else {
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	return(cstring_duplicate(path));
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    }
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}
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CStringP
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file_name_dirname(CStringP path)
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{
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    CStringP last = cstring_find_reverse(path, '/');
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    if (last) {
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	return(cstring_duplicate_prefix(path,(unsigned)(last - path)));
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    } else {
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	return(cstring_duplicate(path));
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    }
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}
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CStringP
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file_name_expand(CStringP dir,			  CStringP name,
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			  CStringP suffix)
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{
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    unsigned dir_length  = cstring_length(dir);
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    unsigned name_length = cstring_length(name);
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    unsigned suf_length  = (suffix ?(cstring_length(suffix)): 0);
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    unsigned suf_extra   = (unsigned)(suffix ? 1 : 0);
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    unsigned extra;
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    unsigned length;
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    CStringP path;
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    CStringP tmp;
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    if ((dir_length > 0) && (dir[dir_length - 1]!= '/')) {
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	extra = 1;
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    } else {
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	extra = 0;
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    }
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    length = (dir_length + extra + name_length + suf_extra + suf_length + 1);
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    path   = ALLOCATE_VECTOR(char, length);
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    tmp    = path;
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    if (dir_length > 0) {
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	(void)memcpy((GenericP)tmp,(GenericP)dir,(SizeT)dir_length);
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	tmp += dir_length;
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	if (dir[dir_length - 1]!= '/') {
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	    tmp[0] = '/';
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	    tmp++;
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	}
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    }
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   (void)memcpy((GenericP)tmp,(GenericP)name,(SizeT)name_length);
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    tmp += name_length;
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    if (suffix) {
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	tmp[0] = '.';
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	tmp++;
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	(void)memcpy((GenericP)tmp,(GenericP)suffix,(SizeT)suf_length);
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	tmp += suf_length;
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    }
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    tmp[0] = '\0';
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    return(path);
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}
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BoolT
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file_name_is_basename(CStringP path)
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{
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    return(!cstring_contains(path, '/'));
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}
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BoolT
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file_name_is_absolute(CStringP path)
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{
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    return(path[0] == '/');
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}
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void
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file_name_populate(CStringP path)
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{
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#ifdef FS_MKDIR
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    CStringP new_path = cstring_duplicate(path);
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    CStringP tmp      = cstring_find(new_path, '/');
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    if (tmp) {
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	do {
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	    *tmp = '\0';
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	   (void)mkdir(new_path, 0755);
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	    *tmp = '/';
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	} while ((tmp = cstring_find(tmp + 1, '/')) != NIL(CStringP));
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    }
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    DEALLOCATE(new_path);
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#else
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    UNUSED(path);
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#endif /* defined (FS_MKDIR) */
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}