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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2007-2010 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
*
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <cstring>
#include <filter_reader.h>
#include <richio.h>
FILTER_READER::FILTER_READER( LINE_READER& aReader ) :
LINE_READER( 1 ),
reader( aReader )
{
// Not using our own m_line buffer, will be using aReader's. This changes
// the meaning of this->m_line to be merely a pointer to aReader's m_line, which of course
// is not owned here.
delete [] m_line;
m_line = nullptr;
}
FILTER_READER::~FILTER_READER()
{
// Our 'm_line' points to aReader's, and he will delete that buffer.
// Prevent subsequent call to ~LINE_READER() from deleting a buffer we do not own.
m_line = nullptr;
}
char* FILTER_READER::ReadLine()
{
char* s;
while( ( s = reader.ReadLine() ) != nullptr )
{
if( !strchr( "#\n\r", s[0] ) )
break;
}
m_line = reader.Line();
m_length = reader.Length();
return m_length ? m_line : nullptr;
}
WHITESPACE_FILTER_READER::WHITESPACE_FILTER_READER( LINE_READER& aReader ) :
LINE_READER( 1 ),
reader( aReader )
{
// Not using our own m_line buffer, will be using aReader's. This changes
// the meaning of this->m_line to be merely a pointer to aReader's m_line, which of course
// is not owned here.
delete [] m_line;
m_line = nullptr;
}
WHITESPACE_FILTER_READER::~WHITESPACE_FILTER_READER()
{
// Our 'm_line' points to aReader's, and he will delete that buffer.
// Prevent subsequent call to ~LINE_READER() from deleting a buffer we do not own.
m_line = nullptr;
}
char* WHITESPACE_FILTER_READER::ReadLine()
{
char* s;
while( ( s = reader.ReadLine() ) != nullptr )
{
while( s != nullptr && strchr( " \t", *s ) )
s++;
if( s != nullptr && !strchr( "#\n\r", *s ) )
break;
}
m_line = s;
m_length = reader.Length();
return m_length ? m_line : nullptr;
}
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