mirror of https://github.com/aria2/aria2
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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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 2 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, 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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/* copyright --> */
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#include "PreAllocationDiskWriter.h"
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#include "DlAbortEx.h"
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#include "message.h"
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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PreAllocationDiskWriter::PreAllocationDiskWriter(long long int totalLength)
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:AbstractDiskWriter(),totalLength(totalLength) {}
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PreAllocationDiskWriter::~PreAllocationDiskWriter() {}
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void PreAllocationDiskWriter::initAndOpenFile(const string& filename) {
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createFile(filename);
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int bufSize = 4096;
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char buf[4096];
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memset(buf, 0, bufSize);
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long long int x = totalLength/bufSize;
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int r = totalLength%bufSize;
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for(long long int i = 0; i < x; i++) {
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if(write(fd, buf, bufSize) < 0) {
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throw new DlAbortEx(EX_FILE_WRITE, filename.c_str(), strerror(errno));
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}
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}
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if(r > 0) {
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seek(totalLength-r);
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if(write(fd, buf, r) < 0) {
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throw new DlAbortEx(EX_FILE_WRITE, filename.c_str(), strerror(errno));
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}
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}
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}
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