166 lines
4.6 KiB
C++
166 lines
4.6 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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// ------------------------------------------------------------------
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// The Goldware Library
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// Copyright (C) 1990-1999 Odinn Sorensen
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// Copyright (C) 1999-2000 Alexander S. Aganichev
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// ------------------------------------------------------------------
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free
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// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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// MA 02111-1307, USA
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// ------------------------------------------------------------------
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// $Id$
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// ------------------------------------------------------------------
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// String bag class.
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// ------------------------------------------------------------------
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#include <gmemdbg.h>
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#include <gstrall.h>
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#include <gstrbags.h>
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// ------------------------------------------------------------------
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const int BLOCKSIZE = 4096;
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// ------------------------------------------------------------------
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GStrBag::GStrBag() {
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items = 0;
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bagsize = 0;
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bag = NULL;
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blocksize = BLOCKSIZE;
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currno = 0;
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}
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// ------------------------------------------------------------------
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GStrBag::~GStrBag() {
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Reset();
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}
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// ------------------------------------------------------------------
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void GStrBag::Reset() {
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if(bag != NULL)
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throw_release(bag);
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}
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// ------------------------------------------------------------------
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int GStrBag::Add(const char* string) {
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return Add(string, strlen(string)+1);
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}
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// ------------------------------------------------------------------
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int GStrBag::Add(const void* data, int length) {
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if(items == 0)
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bag = (char*)throw_malloc(blocksize);
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int currsize = bagsize + (items*sizeof(int));
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int currsizeblks = (currsize/blocksize) + 1;
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int newsizeblks = ((currsize+length+sizeof(int))/blocksize) + 1;
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if(newsizeblks != currsizeblks)
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bag = (char*)throw_realloc(bag, newsizeblks*blocksize);
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memmove(bag+bagsize+length, bag+bagsize, items*sizeof(int));
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memcpy(bag+bagsize, data, length);
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((int*)(bag+bagsize+length))[items] = bagsize;
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bagsize += length;
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return items++;
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}
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// ------------------------------------------------------------------
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void GStrBag::Change(int index, const char* string) {
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Change(index, string, strlen(string)+1);
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}
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// ------------------------------------------------------------------
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void GStrBag::Change(int index, const void* data, int length) {
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int oldpos = Pos(index);
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int oldlen = bag ? strlen(bag+oldpos)+1 : 0;
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int lendiff = length - oldlen;
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int oldsize = bagsize+(items*sizeof(int));
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int movesize = oldsize - oldpos - oldlen;
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int currsizeblks = (oldsize/blocksize) + 1;
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int newsizeblks = ((oldsize+lendiff)/blocksize) + 1;
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if(lendiff > 0) {
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if(newsizeblks != currsizeblks)
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bag = (char*)throw_realloc(bag, oldsize+lendiff);
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memmove(bag+oldpos+length, bag+oldpos+oldlen, movesize);
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}
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else if(lendiff < 0) {
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memmove(bag+oldpos+length, bag+oldpos+oldlen, movesize);
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if(newsizeblks != currsizeblks)
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bag = (char*)throw_realloc(bag, oldsize+lendiff);
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}
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memcpy(bag+oldpos, data, length);
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bagsize += lendiff;
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for(int n=index+1; n<items; n++)
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Pos(n) += lendiff;
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}
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// ------------------------------------------------------------------
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const char* GStrBag::operator[](int index) {
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return Index(index);
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}
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// ------------------------------------------------------------------
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void GStrSet3::Put(const char* s1, const char* s2, const char* s3) {
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int len1 = strlen(s1 ? s1 : "")+1;
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int len2 = strlen(s2 ? s2 : "")+1;
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int len3 = strlen(s3 ? s3 : "")+1;
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cfg.size = len1 + len2 + len3;
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set = (char *)throw_xmalloc(cfg.size);
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cfg.pos2 = len1;
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cfg.pos3 = len1 + len2;
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memcpy(set, s1 ? s1 : "", len1);
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memcpy(set+cfg.pos2, s2 ? s2 : "", len2);
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memcpy(set+cfg.pos3, s3 ? s3 : "", len3);
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}
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// ------------------------------------------------------------------
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void GStrSet3::Change(const char* s1, const char* s2, const char* s3) {
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char* oldset = set;
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Put(s1, s2, s3);
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throw_xfree(oldset);
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}
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// ------------------------------------------------------------------
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