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deb-mbse/mbsetup/stlist.c

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/*****************************************************************************
*
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* $Id$
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* Purpose ...............: String sorting for databases.
*
*****************************************************************************
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* Copyright (C) 1997-2005
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*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS 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, or (at your option) any
* later version.
*
* MB BBS 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 MB BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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#include "../lib/mbselib.h"
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#include "stlist.h"
/*
* Tidy the strings array
*/
void tidy_stlist(st_list ** fdp)
{
st_list *tmp, *old;
for (tmp = *fdp; tmp; tmp = old) {
old = tmp->next;
free(tmp);
}
*fdp = NULL;
}
/*
* Add a string to the array
*/
void fill_stlist(st_list **fdp, char *stringname, long pos)
{
st_list *tmp;
tmp = (st_list *)malloc(sizeof(st_list));
tmp->next = *fdp;
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snprintf(tmp->string, 81, "%s", stringname);
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tmp->pos = pos;
*fdp = tmp;
}
int compstring(st_list **, st_list **);
/*
* Sort the array of strings
*/
void sort_stlist(st_list **fdp)
{
st_list *ta, **vector;
size_t n = 0, i;
if (*fdp == NULL)
return;
for (ta = *fdp; ta; ta = ta->next)
n++;
vector = (st_list **)malloc(n * sizeof(st_list *));
i = 0;
for (ta = *fdp; ta; ta = ta->next)
vector[i++] = ta;
qsort(vector, n, sizeof(st_list*), (int(*)(const void*, const void*))compstring);
(*fdp) = vector[0];
i = 1;
for (ta = *fdp; ta; ta = ta->next) {
if (i < n)
ta->next = vector[i++];
else
ta->next = NULL;
}
free(vector);
return;
}
int compstring(st_list **fdp1, st_list **fdp2)
{
return strcmp((*fdp1)->string, (*fdp2)->string);
}