jbitoutputstream.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU 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. *
***************************************************************************/
#include "Stdafx.h"
#include "jbitoutputstream.h"
#include "jfileoutputstream.h"
#include "jioexception.h"
#include "joutofboundsexception.h"
namespace jio {
BitOutputStream::BitOutputStream(std::string filename):
OutputStream()
{
jcommon::Object::SetClassName("jio::BitOutputStream");
stream = NULL;
haveByte = false;
show = false;
bitCount = 0;
currentByte = 0;
try {
stream = new FileOutputStream(filename);
} catch (...) {
stream = NULL;
throw IOException("Cannot open file in BitInputStream");
}
}
BitOutputStream::BitOutputStream(OutputStream *os):
OutputStream()
{
jcommon::Object::SetClassName("jio::BitOutputStream");
if ((void *)os == NULL) {
throw IOException("Null pointer exception");
}
stream = os;
haveByte = false;
show = false;
bitCount = 0;
currentByte = 0;
}
BitOutputStream::~BitOutputStream()
{
if (stream != NULL) {
delete stream;
}
}
bool BitOutputStream::IsEmpty()
{
return Available() == 0;
}
int64_t BitOutputStream::Available()
{
return 0LL;
}
int64_t BitOutputStream::Write(int b)
{
return stream->Write(b);
}
int64_t BitOutputStream::Write(char *b, int64_t size)
{
return stream->Write(b, size);
}
int64_t BitOutputStream::Flush()
{
while (bitCount > 0) {
WriteBit(1);
}
stream->Flush();
return 1LL;
}
void BitOutputStream::Close()
{
stream->Close();
}
void BitOutputStream::WriteBit(int bit)
{
bit = (bit==0)?0:1;
currentByte = currentByte << 1 | bit;
bitCount++;
if (bitCount == 8) {
Write(currentByte);
currentByte = 0;
bitCount = 0;
}
}
void BitOutputStream::WriteBits(int bits, int num)
{
if ((num < 0) || (num > 32)) {
throw jcommon::OutOfBoundsException("Number of bits is out of range");
}
int mask;
for (int i=num-1; i>=0; i--) {
mask = 1 << i;
WriteBit((bits & mask) / mask);
}
}
int64_t BitOutputStream::GetSentBytes()
{
return 0LL;
}
}