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/*
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* lftp - file transfer program
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*
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* Copyright (c) 1996-2012 by Alexander V. Lukyanov (lav@yars.free.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) 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, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <assert.h>
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#include "xarray.h"
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void xarray0::get_space_do(size_t s,size_t g)
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{
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if(!buf)
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buf=xmalloc(element_size*(size=s+keep_extra));
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else if(size
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buf=xrealloc(buf,element_size*(size=(s|(g-1))+keep_extra));
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else if(size>=g*8 && s+keep_extra<=size/2)
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buf=xrealloc(buf,element_size*(size/=2));
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}
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void xarray0::_nset(const void *s,int len)
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{
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if(!s)
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{
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xfree(buf);
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init();
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return;
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}
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this->len=len;
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if(s==buf)
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return;
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if(s>buf && s<(char*)buf+size*element_size)
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{
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memmove(buf,s,len*element_size);
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return;
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}
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get_space(len);
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memcpy(buf,s,len*element_size);
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}
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void *xarray0::_insert(int before)
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{
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assert(before>=0 && before<=len);
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grow_space(len+1);
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if(before
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memmove(get_ptr(before+1),get_ptr(before),element_size*(len-before));
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len++;
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return get_ptr(before);
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}
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void xarray0::_remove(int i,int j)
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{
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assert(i<j && i>=0 && j<=len);
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if(j
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memmove(get_ptr(i),get_ptr(j),element_size*(len-j));
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len-=(j-i);
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}
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void *xarray0::_borrow()
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{
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size=len=0;
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return replace_value(buf,(void*)0);
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}
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void xarray0::move_here(xarray0& o)
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{
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xfree(buf);
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size=o.size;
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len=o.len;
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buf=o._borrow();
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}
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bool xarray0::_bsearch(const void *n,qsort_cmp_t cmp,int *pos)
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{
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int lo=0;
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int hi=len;
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while(lo
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int m=(lo+hi)/2;
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int r=cmp(n,get_ptr(m));
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if(r<0)
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hi=m;
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else if(r>0)
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lo=m+1;
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else {
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*pos=m;
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return true;
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}
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}
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*pos=lo;
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return false;
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}
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void *xarray0::_insert_ordered(const void *n,qsort_cmp_t cmp)
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{
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int pos;
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(void)_bsearch(n,cmp,&pos;;
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return _insert(pos);
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}
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