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