net.sourceforge.plantuml.zopfli.Buffer Maven / Gradle / Ivy

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PlantUML is a component that allows to quickly write diagrams from text.

There is a newer version: 1.2025.0

// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.

package net.sourceforge.plantuml.zopfli;

public class Buffer {

	byte[] data;
	int size;
	private int bp;

	Buffer() {
		data = new byte[65536];
	}

	public byte[] getData() {
		return data;
	}

	public byte[] getResult() {
		byte[] copy = new byte[size];
		System.arraycopy(data, 0, copy, 0, size);
		return copy;
	}

	public int getSize() {
		return size;
	}

	void append(byte value) {
		if (size == data.length) {
			byte[] copy = new byte[size * 2];
			System.arraycopy(data, 0, copy, 0, size);
			data = copy;
		}
		data[size++] = value;
	}

	void addBits(int symbol, int length) {
		for (int i = 0; i < length; i++) {
			if (bp == 0) {
				append((byte) 0);
			}
			int bit = (symbol >> i) & 1;
			data[size - 1] |= bit << bp;
			bp = (bp + 1) & 7;
		}
	}

	void addHuffmanBits(int symbol, int length) {
		for (int i = 0; i < length; i++) {
			if (bp == 0) {
				append((byte) 0);
			}
			int bit = (symbol >> (length - i - 1)) & 1;
			data[size - 1] |= bit << bp;
			bp = (bp + 1) & 7;
		}
	}
}