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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
- package org.apache.fop.fonts.truetype;
-
- import java.io.ByteArrayOutputStream;
- import java.io.IOException;
-
- public class OTFSubSetWriter extends OTFFile {
- protected int currentPos;
- protected ByteArrayOutputStream output = new ByteArrayOutputStream();
-
- public OTFSubSetWriter() throws IOException {
- super();
- }
-
- public static byte[] concatArray(byte[] a, byte[] b) {
- int aLen = a.length;
- int bLen = b.length;
- byte[] c = new byte[aLen + bLen];
- System.arraycopy(a, 0, c, 0, aLen);
- System.arraycopy(b, 0, c, aLen, bLen);
- return c;
- }
-
- /**
- * Appends a byte to the output array,
- * updates currentPost but not realSize
- */
- protected void writeByte(int b) {
- output.write(b);
- currentPos++;
- }
-
- /**
- * Appends a USHORT to the output array,
- * updates currentPost but not realSize
- */
- protected void writeCard16(int s) {
- byte b1 = (byte)((s >> 8) & 0xff);
- byte b2 = (byte)(s & 0xff);
- writeByte(b1);
- writeByte(b2);
- }
-
- protected void writeThreeByteNumber(int s) {
- byte b1 = (byte)((s >> 16) & 0xFF);
- byte b2 = (byte)((s >> 8) & 0xFF);
- byte b3 = (byte)(s & 0xFF);
- writeByte(b1);
- writeByte(b2);
- writeByte(b3);
- }
-
- /**
- * Appends a ULONG to the output array,
- * at the given position
- */
- protected void writeULong(int s) {
- byte b1 = (byte)((s >> 24) & 0xff);
- byte b2 = (byte)((s >> 16) & 0xff);
- byte b3 = (byte)((s >> 8) & 0xff);
- byte b4 = (byte)(s & 0xff);
- writeByte(b1);
- writeByte(b2);
- writeByte(b3);
- writeByte(b4);
- }
-
-
- protected void writeBytes(byte[] out) {
- for (byte anOut : out) {
- writeByte(anOut);
- }
- }
-
- /**
- * Returns a subset of the fonts (readFont() MUST be called first in order to create the
- * subset).
- * @return byte array
- */
- public byte[] getFontSubset() {
- return output.toByteArray();
- }
- }
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