jbufferedreader.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 "jbufferedreader.h"
#include "jioexception.h"
#define LINE_SIZE 1024
namespace jio {
BufferedReader::BufferedReader(InputStream *stream_)
{
jcommon::Object::SetClassName("jio::BufferedReader");
if (stream_ == NULL) {
throw IOException("InputStream null pointer exception");
}
_is_eof = false;
_stream = stream_;
}
BufferedReader::~BufferedReader()
{
}
int64_t BufferedReader::Available()
{
return _stream->Available();
}
bool BufferedReader::IsEOF()
{
return _is_eof;
}
int64_t BufferedReader::Read()
{
int64_t r;
r = _stream->Read();
if (r < 0LL) {
_is_eof = true;
} else {
_is_eof = false;
}
return r;
}
int64_t BufferedReader::Read(char *data, int64_t size)
{
int64_t r;
r = _stream->Read(data, size);
if (r < 0LL) {
_is_eof = true;
} else {
_is_eof = false;
}
return r;
}
std::string BufferedReader::ReadLine(std::string delim)
{
char *new_ptr,
*lineptr = new char[LINE_SIZE];
int i,
n = LINE_SIZE,
x,
tmp;
const char *cdelim = delim.c_str();
int csize = delim.size();
_is_eof = false;
for (i=0; ; ) {
x = (int)_stream->Read();
if (i >= n) {
tmp = n+100;
new_ptr = (char *)realloc(lineptr, tmp);
if (new_ptr == NULL) {
delete lineptr;
return "";
}
lineptr = new_ptr;
n = tmp;
}
if (x < 0) {
_is_eof = true;
if (i == 0) {
delete lineptr;
return "";
}
lineptr[i] = 0;
return lineptr;
}
lineptr[i++] = x;
if (i >= csize) {
if (memcmp((lineptr + i - csize), cdelim, csize) == 0) {
lineptr[i-csize] = 0;
break;
}
}
}
lineptr[i] = 0;
return lineptr;
}
}