AOutStringSectionReader.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
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    the rights to use, copy, modify, merge, publish, distribute, sublicense,
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    Software is furnished to do so, subject to the following conditions:
 
    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
 
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/**
 * @file AOutStringSectionReader.cc
 *
 * Definition of AOutStringSectionReader class.
 *
 * @author Ari Metsähalme (ari.metsahalme-no.spam-tut.fi)
 * @author Mikael Lepistö 2004 (tmlepist-no.spam-cs.tut.fi)
 * @note reviewed 17 October 2003 by kl, pj, am, rm
 *
 * @note rating: yellow
 */
 
#include "Section.hh"
#include "SafePointer.hh"
#include "ReferenceKey.hh"
#include "StringSection.hh"
#include "AOutStringSectionReader.hh"
#include "AOutSymbolSectionReader.hh"
 
namespace TPEF {
 
using std::string;
using ReferenceManager::SectionKey;
using ReferenceManager::SafePointer;
 
AOutStringSectionReader AOutStringSectionReader::proto_;
 
/**
 * Constructor.
 *
 * Registers to SectionReader.
 */
AOutStringSectionReader::AOutStringSectionReader() : AOutSectionReader() {
    SectionReader::registerSectionReader(this);
}
 
/**
 * Destructor.
 */
AOutStringSectionReader::~AOutStringSectionReader() {
}
 
/**
 * Returns the type of section that this class can read.
 *
 * @return Type of section to read.
 */
Section::SectionType
AOutStringSectionReader::type() const {
    return Section::ST_STRTAB;
}
 
/**
 * Reads string section from a.out binary file.
 *
 * Reads section from stream and makes sure that section starts withs
 * zero.
 *
 * @param stream Stream to be read from.
 * @param section Section where to the information is stored.
 * @exception UnreachableStream If reading of section fails.
 * @exception KeyAlreadyExists Key was in use when trying to register object.
 * @exception EndOfFile If end of file were reached while it shouldn't.
 * @exception OutOfRange Some of read values were out of range.
 * @exception WrongSubclass Some class couldn't do what it was asked for.
 * @exception UnexpectedValue If there was unexpected value when reading.
 */
void
AOutStringSectionReader::readData(
    BinaryStream& stream, Section* section) const {
    AOutReader* aOutReader = dynamic_cast<AOutReader*>(parent());
 
    StringSection* strSect = dynamic_cast<StringSection*>(section);
    assert(strSect != NULL);
 
    for (unsigned int i = 0;
         i < aOutReader->header().sectionSizeString(); i++) {
        strSect->addByte(stream.readByte());
    }
 
    // add zero byte if no data
    if (strSect->length() == 0) {
        strSect->addByte(0);
    }
 
    // section must start with zero.
    assert(strSect->byte(strSect->chunk(0)) == 0);
}
}