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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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package com.sun.xml.internal.fastinfoset.util;

import com.sun.xml.internal.fastinfoset.CommonResourceBundle;

public class ContiguousCharArrayArray extends ValueArray {

    public static final int INITIAL_CHARACTER_SIZE = 512;

    public static final int MAXIMUM_CHARACTER_SIZE = Integer.MAX_VALUE;

    protected int _maximumCharacterSize;

    public int[] _offset;

    public int[] _length;

    public char[] _array;

    public int _arrayIndex;

    public int _readOnlyArrayIndex;

    private String[] _cachedStrings;

    public int _cachedIndex;

    private ContiguousCharArrayArray _readOnlyArray;

    public ContiguousCharArrayArray(int initialCapacity, int maximumCapacity,

            int initialCharacterSize, int maximumCharacterSize) {

        _offset = new int[initialCapacity];

        _length = new int[initialCapacity];

        _array = new char[initialCharacterSize];

        _maximumCapacity = maximumCapacity;

        _maximumCharacterSize = maximumCharacterSize;

    }

    public ContiguousCharArrayArray() {

        this(DEFAULT_CAPACITY, MAXIMUM_CAPACITY,

                INITIAL_CHARACTER_SIZE, MAXIMUM_CHARACTER_SIZE);

    }

    public final void clear() {

        _arrayIndex = _readOnlyArrayIndex;

        _size = _readOnlyArraySize;

        if (_cachedStrings != null) {

            for (int i = _readOnlyArraySize; i < _cachedStrings.length; i++) {

                _cachedStrings[i] = null;

            }

        }

    }

    public final int getArrayIndex() {

        return _arrayIndex;

    }

    public final void setReadOnlyArray(ValueArray readOnlyArray, boolean clear) {

        if (!(readOnlyArray instanceof ContiguousCharArrayArray)) {

            throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.illegalClass", new Object[]{readOnlyArray}));

        }

        setReadOnlyArray((ContiguousCharArrayArray)readOnlyArray, clear);

    }

    public final void setReadOnlyArray(ContiguousCharArrayArray readOnlyArray, boolean clear) {

        if (readOnlyArray != null) {

            _readOnlyArray = readOnlyArray;

            _readOnlyArraySize = readOnlyArray.getSize();

            _readOnlyArrayIndex = readOnlyArray.getArrayIndex();

            if (clear) {

                clear();

            }

            _array = getCompleteCharArray();

            _offset = getCompleteOffsetArray();

            _length = getCompleteLengthArray();

            _size = _readOnlyArraySize;

            _arrayIndex = _readOnlyArrayIndex;

        }

    }

    public final char[] getCompleteCharArray() {

        if (_readOnlyArray == null) {

            if (_array == null) return null;

            // Return cloned version of internal _array

            final char[] clonedArray = new char[_array.length];

            System.arraycopy(_array, 0, clonedArray, 0, _array.length);

            return clonedArray;

//            return _array;

        } else {

            final char[] ra = _readOnlyArray.getCompleteCharArray();

            final char[] a = new char[_readOnlyArrayIndex + _array.length];

            System.arraycopy(ra, 0, a, 0, _readOnlyArrayIndex);

            return a;

        }

    }

    public final int[] getCompleteOffsetArray() {

        if (_readOnlyArray == null) {

            if (_offset == null) return null;

            // Return cloned version of internal _offset

            final int[] clonedArray = new int[_offset.length];

            System.arraycopy(_offset, 0, clonedArray, 0, _offset.length);

            return clonedArray;

//            return _offset;

        } else {

            final int[] ra = _readOnlyArray.getCompleteOffsetArray();

            final int[] a = new int[_readOnlyArraySize + _offset.length];

            System.arraycopy(ra, 0, a, 0, _readOnlyArraySize);

            return a;

        }

    }

    public final int[] getCompleteLengthArray() {

        if (_readOnlyArray == null) {

            if (_length == null) return null;

            // Return cloned version of internal _length

            final int[] clonedArray = new int[_length.length];

            System.arraycopy(_length, 0, clonedArray, 0, _length.length);

            return clonedArray;

//            return _length;

        } else {

            final int[] ra = _readOnlyArray.getCompleteLengthArray();

            final int[] a = new int[_readOnlyArraySize + _length.length];

            System.arraycopy(ra, 0, a, 0, _readOnlyArraySize);

            return a;

        }

    }

    public final String getString(int i) {

        if (_cachedStrings != null && i < _cachedStrings.length) {

            final String s = _cachedStrings[i];

            return (s != null) ? s : (_cachedStrings[i] = new String(_array, _offset[i], _length[i]));

        }

        final String[] newCachedStrings = new String[_offset.length];

        if (_cachedStrings != null && i >= _cachedStrings.length) {

            System.arraycopy(_cachedStrings, 0, newCachedStrings, 0, _cachedStrings.length);

        }

        _cachedStrings = newCachedStrings;

        return _cachedStrings[i] = new String(_array, _offset[i], _length[i]);

    }

    public final void ensureSize(int l) {

        if (_arrayIndex + l >= _array.length) {

            resizeArray(_arrayIndex + l);

        }

    }

    public final void add(int l) {

        if (_size == _offset.length) {

            resize();

        }

        _cachedIndex = _size;

        _offset[_size] = _arrayIndex;

        _length[_size++] = l;

        _arrayIndex += l;

    }

    public final int add(char[] c, int l) {

        if (_size == _offset.length) {

            resize();

        }

        final int oldArrayIndex = _arrayIndex;

        final int arrayIndex = oldArrayIndex + l;

        _cachedIndex = _size;

        _offset[_size] = oldArrayIndex;

        _length[_size++] = l;

        if (arrayIndex >= _array.length) {

            resizeArray(arrayIndex);

        }

        System.arraycopy(c, 0, _array, oldArrayIndex, l);

        _arrayIndex = arrayIndex;

        return oldArrayIndex;

    }

    protected final void resize() {

        if (_size == _maximumCapacity) {

            throw new ValueArrayResourceException(CommonResourceBundle.getInstance().getString("message.arrayMaxCapacity"));

        }

        int newSize = _size * 3 / 2 + 1;

        if (newSize > _maximumCapacity) {

            newSize = _maximumCapacity;

        }

        final int[] offset = new int[newSize];

        System.arraycopy(_offset, 0, offset, 0, _size);

        _offset = offset;

        final int[] length = new int[newSize];

        System.arraycopy(_length, 0, length, 0, _size);

        _length = length;

    }

    protected final void resizeArray(int requestedSize) {

        if (_arrayIndex == _maximumCharacterSize) {

            throw new ValueArrayResourceException(CommonResourceBundle.getInstance().getString("message.maxNumberOfCharacters"));

        }

        int newSize = requestedSize * 3 / 2 + 1;

        if (newSize > _maximumCharacterSize) {

            newSize = _maximumCharacterSize;

        }

        final char[] array = new char[newSize];

        System.arraycopy(_array, 0, array, 0, _arrayIndex);

        _array = array;

    }

}