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// **********************************************************************
//
// Copyright (c) 2003
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
#include <IcePatch/Util.h>
#include <IcePatch/ClientUtil.h>
#include <fstream>
#include <bzlib.h>
using namespace std;
using namespace Ice;
using namespace IcePatch;
string
IcePatch::pathToName(const string& path)
{
string::size_type pos = path.rfind('/');
if(pos == string::npos)
{
return path;
}
else
{
return path.substr(pos + 1);
}
}
void
IcePatch::getRegular(const RegularPrx& regular, ProgressCB& progressCB)
{
string path = identityToPath(regular->ice_getIdentity());
string pathBZ2 = path + ".bz2";
Int totalBZ2 = regular->getBZ2Size();
Int posBZ2 = 0;
//
// Check for partial BZ2 file.
//
FileInfo infoBZ2 = getFileInfo(pathBZ2, false);
if(infoBZ2.type == FileTypeRegular)
{
ByteSeq remoteBZ2MD5 = regular->getBZ2MD5(infoBZ2.size);
ByteSeq localBZ2MD5 = calcPartialMD5(pathBZ2, infoBZ2.size);
if(remoteBZ2MD5 == localBZ2MD5)
{
posBZ2 = infoBZ2.size;
}
}
//
// Get the BZ2 file.
//
progressCB.startDownload(totalBZ2, posBZ2);
ofstream fileBZ2(pathBZ2.c_str(), ios::binary | (posBZ2 ? ios::app : ios::openmode(0)));
if(!fileBZ2)
{
FileAccessException ex;
ex.reason = "cannot open `" + pathBZ2 + "' for writing: " + strerror(errno);
throw ex;
}
while(posBZ2 < totalBZ2)
{
const Int numBZ2 = 64 * 1024;
ByteSeq bytesBZ2 = regular->getBZ2(posBZ2, numBZ2);
if(bytesBZ2.empty())
{
break;
}
posBZ2 += bytesBZ2.size();
fileBZ2.write(&bytesBZ2[0], bytesBZ2.size());
if(!fileBZ2)
{
FileAccessException ex;
ex.reason = "cannot write `" + pathBZ2 + "': " + strerror(errno);
throw ex;
}
if(static_cast<Int>(bytesBZ2.size()) < numBZ2)
{
break;
}
progressCB.updateDownload(totalBZ2, posBZ2);
}
progressCB.finishedDownload(totalBZ2);
fileBZ2.close();
//
// Read the BZ2 file in blocks and write the original file.
//
ofstream file(path.c_str(), ios::binary);
if(!file)
{
FileAccessException ex;
ex.reason = "cannot open `" + path + "' for writing: " + strerror(errno);
throw ex;
}
FILE* stdioFileBZ2 = fopen(pathBZ2.c_str(), "rb");
if(!stdioFileBZ2)
{
FileAccessException ex;
ex.reason = "cannot open `" + pathBZ2 + "' for reading: " + strerror(errno);
throw ex;
}
int bzError;
BZFILE* bzFile = BZ2_bzReadOpen(&bzError, stdioFileBZ2, 0, 0, 0, 0);
if(bzError != BZ_OK)
{
FileAccessException ex;
ex.reason = "BZ2_bzReadOpen failed";
if(bzError == BZ_IO_ERROR)
{
ex.reason += string(": ") + strerror(errno);
}
fclose(stdioFileBZ2);
throw ex;
}
const Int numBZ2 = 64 * 1024;
Byte bytesBZ2[numBZ2];
try
{
progressCB.startUncompress(totalBZ2, 0);
while(bzError != BZ_STREAM_END)
{
int sz = BZ2_bzRead(&bzError, bzFile, bytesBZ2, numBZ2);
if(bzError != BZ_OK && bzError != BZ_STREAM_END)
{
FileAccessException ex;
ex.reason = "BZ2_bzRead failed";
if(bzError == BZ_IO_ERROR)
{
ex.reason += string(": ") + strerror(errno);
}
throw ex;
}
if(sz > 0)
{
long pos = ftell(stdioFileBZ2);
if(pos == -1)
{
FileAccessException ex;
ex.reason = "cannot get read position for `" + pathBZ2 + "': " + strerror(errno);
throw ex;
}
progressCB.updateUncompress(totalBZ2, pos);
file.write(bytesBZ2, sz);
if(!file)
{
FileAccessException ex;
ex.reason = "cannot write `" + path + "': " + strerror(errno);
throw ex;
}
}
}
progressCB.finishedUncompress(totalBZ2);
}
catch(...)
{
BZ2_bzReadClose(&bzError, bzFile);
fclose(stdioFileBZ2);
file.close();
throw;
}
BZ2_bzReadClose(&bzError, bzFile);
if(bzError != BZ_OK)
{
FileAccessException ex;
ex.reason = "BZ2_bzReadClose failed";
if(bzError == BZ_IO_ERROR)
{
ex.reason += string(": ") + strerror(errno);
}
fclose(stdioFileBZ2);
throw ex;
}
fclose(stdioFileBZ2);
file.close();
//
// Remove the BZ2 file, it is not needed anymore.
//
if(::remove(pathBZ2.c_str()) == -1)
{
FileAccessException ex;
ex.reason = "cannot remove file `" + pathBZ2 + "': " + strerror(errno);
throw ex;
}
//
// Create a MD5 file for the original file.
//
createMD5(path);
}
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