117 lines
2.4 KiB
C
117 lines
2.4 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: String sorting for databases.
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*
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*****************************************************************************
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* Copyright (C) 1997-2002
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MB BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MB BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*****************************************************************************/
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#include "../lib/libs.h"
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#include "../lib/structs.h"
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#include "../lib/common.h"
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#include "../lib/clcomm.h"
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#include "stlist.h"
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/*
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* Tidy the strings array
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*/
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void tidy_stlist(st_list ** fdp)
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{
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st_list *tmp, *old;
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for (tmp = *fdp; tmp; tmp = old) {
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old = tmp->next;
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free(tmp);
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}
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*fdp = NULL;
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}
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/*
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* Add a string to the array
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*/
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void fill_stlist(st_list **fdp, char *stringname, long pos)
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{
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st_list *tmp;
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tmp = (st_list *)malloc(sizeof(st_list));
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tmp->next = *fdp;
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sprintf(tmp->string, "%s", stringname);
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tmp->pos = pos;
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*fdp = tmp;
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}
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int compstring(st_list **, st_list **);
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/*
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* Sort the array of strings
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*/
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void sort_stlist(st_list **fdp)
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{
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st_list *ta, **vector;
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size_t n = 0, i;
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if (*fdp == NULL)
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return;
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for (ta = *fdp; ta; ta = ta->next)
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n++;
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vector = (st_list **)malloc(n * sizeof(st_list *));
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i = 0;
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for (ta = *fdp; ta; ta = ta->next)
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vector[i++] = ta;
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qsort(vector, n, sizeof(st_list*), (int(*)(const void*, const void*))compstring);
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(*fdp) = vector[0];
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i = 1;
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for (ta = *fdp; ta; ta = ta->next) {
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if (i < n)
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ta->next = vector[i++];
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else
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ta->next = NULL;
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}
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free(vector);
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return;
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}
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int compstring(st_list **fdp1, st_list **fdp2)
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{
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return strcmp((*fdp1)->string, (*fdp2)->string);
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}
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