mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-13 09:07:38 +00:00
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
|
|
* hfsutils - tools for reading and writing Macintosh HFS volumes
|
|
* Copyright (C) 1996-1998 Robert Leslie
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* $Id: dlist.c,v 1.7 1998/11/02 22:08:27 rob Exp $
|
|
*/
|
|
|
|
# ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
# endif
|
|
|
|
# include <stdlib.h>
|
|
# include <string.h>
|
|
|
|
# include "dlist.h"
|
|
|
|
/*
|
|
* NAME: dlist->init()
|
|
* DESCRIPTION: initialize a new dynamic list
|
|
*/
|
|
int dl_init(dlist *list)
|
|
{
|
|
list->memsz = 100;
|
|
list->mem = malloc(list->memsz);
|
|
if (list->mem == 0)
|
|
return -1;
|
|
|
|
list->eltend = (char **) list->mem;
|
|
list->strs = list->mem + list->memsz;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* NAME: dlist->free()
|
|
* DESCRIPTION: dispose of a dynamic list
|
|
*/
|
|
void dl_free(dlist *list)
|
|
{
|
|
free(list->mem);
|
|
}
|
|
|
|
/*
|
|
* NAME: dlist->array()
|
|
* DESCRIPTION: return the array of strings in a list; can dispose with free()
|
|
*/
|
|
char **dl_array(dlist *list)
|
|
{
|
|
return (char **) list->mem;
|
|
}
|
|
|
|
/*
|
|
* NAME: dlist->size()
|
|
* DESCRIPTION: return the number of strings in a list
|
|
*/
|
|
int dl_size(dlist *list)
|
|
{
|
|
return list->eltend - (char **) list->mem;
|
|
}
|
|
|
|
/*
|
|
* NAME: dlist->append()
|
|
* DESCRIPTION: insert a string to the end of a list
|
|
*/
|
|
int dl_append(dlist *list, const char *str)
|
|
{
|
|
size_t len;
|
|
|
|
len = strlen(str) + 1;
|
|
|
|
/* make sure there is room */
|
|
|
|
if (sizeof(char *) + len > (size_t) (list->strs - (char *) list->eltend))
|
|
{
|
|
dlist newlist;
|
|
size_t strsz;
|
|
char **elt;
|
|
|
|
strsz = (list->mem + list->memsz) - list->strs;
|
|
|
|
newlist.memsz = list->memsz * 2 + sizeof(char *) + len;
|
|
newlist.mem = malloc(newlist.memsz);
|
|
if (newlist.mem == 0)
|
|
return -1;
|
|
|
|
newlist.eltend = (char **) newlist.mem;
|
|
newlist.strs = newlist.mem + newlist.memsz - strsz;
|
|
|
|
memcpy(newlist.strs, list->strs, strsz);
|
|
|
|
for (elt = (char **) list->mem; elt < list->eltend; ++elt)
|
|
*newlist.eltend++ = newlist.strs + (*elt - list->strs);
|
|
|
|
free(list->mem);
|
|
|
|
*list = newlist;
|
|
}
|
|
|
|
list->strs -= len;
|
|
strcpy(list->strs, str);
|
|
|
|
*list->eltend++ = list->strs;
|
|
|
|
return 0;
|
|
}
|