72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* Copyright (c) 2003-2010 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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# include "sys_priv.h"
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# include "stringheap.h"
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# include "ivl_alloc.h"
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# include <string.h>
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# include <stdlib.h>
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# include <assert.h>
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struct stringheap_cell {
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struct stringheap_cell*next;
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};
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# define PAGE_SIZE 8192
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# define STRINGHEAP_SIZE (PAGE_SIZE - sizeof(struct stringheap_cell))
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const char*strdup_sh(struct stringheap_s*hp, const char*txt)
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{
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char*res;
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unsigned len = strlen(txt);
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assert(len < STRINGHEAP_SIZE);
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if (hp->cell_lst == 0) {
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hp->cell_lst = malloc(PAGE_SIZE);
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hp->cell_lst->next = 0;
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hp->cell_off = 0;
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}
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if ((STRINGHEAP_SIZE - hp->cell_off - 1) <= len) {
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struct stringheap_cell*tmp = malloc(PAGE_SIZE);
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tmp->next = hp->cell_lst;
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hp->cell_lst = tmp;
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hp->cell_off = 0;
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}
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res = (char*) (hp->cell_lst + 1);
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res += hp->cell_off;
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strcpy(res, txt);
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hp->cell_off += len + 1;
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return res;
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}
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void string_heap_delete(struct stringheap_s*hp)
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{
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struct stringheap_cell *cur, *tmp;
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for (cur = hp->cell_lst; cur ; cur = tmp) {
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tmp = cur->next;
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free((char *)cur);
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}
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hp->cell_lst = 0;
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hp->cell_off = 0;
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}
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