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deb-goldedplus/goldlib/gall/gstrbags.cpp
2000-02-25 10:15:17 +00:00

166 lines
4.6 KiB
C++

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