StringImpl.cc

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/*
 * StringImpl.cc
 *
 * Smalltalk like class library for C++
 * Abstract string implementor.
 *
 * Copyright (c) 2004-6 Milan Cermak
 */
/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <stlib/StringImpl.h>
#include <stlib/ByteArray.h>
#include <stlib/ByteString.h>
#include <stlib/Character.h>
#include <stlib/CharacterArray.h>
#include <stlib/EncodedStream.h>
#include <stlib/InternalEncodedStreamFactory.h>
#include <stlib/String.h>
#include <stlib/TwoByteString.h>
#include <stlib/Error.h>

#include <string.h>

using namespace Core;

/* Accessing protocol */
long StringImpl::size(void) const
{
    return tally;
}

/* Converting protocol */
ByteString *StringImpl::asByteString(void)
{
    Character *ch;
    ByteString *newString = new ByteString(size());
    for (int i = 0; i < size(); i++) {
        ch = at(i);
        if (ch->byteSize() > 1) {
            error(new String("Can't convert String to ByteString. Characters out of range."),
                  new String(__PRETTY_FUNCTION__));
        }
        newString->put(i, at(i));
    }
    return newString;
}

TwoByteString *StringImpl::asTwoByteString(void)
{
    Character *ch;
    TwoByteString *newString = new TwoByteString(size());
    for (int i = 0; i < size(); i++) {
        ch = at(i);
        if (ch->byteSize() > 1) {
            /* Can't convert to ByteString, keep this implementor */
            error(new String("Can't convert String to TwoByteString. Characters out of range."),
                  new String(__PRETTY_FUNCTION__));
        }
        newString->put(i, at(i));
    }
    return newString;
}

CharacterArray *StringImpl::asCharacterArray(void)
{
    CharacterArray *newString = new CharacterArray(size());
    for (int i = 0; i < size(); i++) {
        newString->put(i, at(i));
    }
    return newString;
}

/* Testing protocol */
bool StringImpl::isByteString(void) const
{
    return false;
}

bool StringImpl::isTwoByteString(void) const
{
    return false;
}

bool StringImpl::isCharacterArray(void) const
{
    return false;
}

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