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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.afp.goca;
-
- import java.io.IOException;
- import java.io.OutputStream;
- import java.io.UnsupportedEncodingException;
-
- import org.apache.fop.afp.AFPConstants;
-
- /**
- * A GOCA graphics string
- */
- public class GraphicsCharacterString extends AbstractGraphicsCoord {
-
- /** Up to 255 bytes of character data */
- protected static final int MAX_STR_LEN = 255;
-
- /** the string to draw */
- protected final String str;
-
- /**
- * Constructor (absolute positioning)
- *
- * @param str the character string
- * @param x the x coordinate
- * @param y the y coordinate
- */
- public GraphicsCharacterString(String str, int x, int y) {
- super(x, y);
- this.str = truncate(str);
- }
-
- /**
- * Constructor (relative positioning)
- *
- * @param str the character string
- * @param x the x coordinate
- * @param y the y coordinate
- */
- public GraphicsCharacterString(String str) {
- super(null);
- this.str = truncate(str);
- }
-
- /** {@inheritDoc} */
- byte getOrderCode() {
- if (isRelative()) {
- return (byte)0x83;
- } else {
- return (byte)0xC3;
- }
- }
-
- /** {@inheritDoc} */
- public int getDataLength() {
- return super.getDataLength() + str.length();
- }
-
- /** {@inheritDoc} */
- public void writeToStream(OutputStream os) throws IOException {
- byte[] data = getData();
- byte[] strData = getStringAsBytes();
- System.arraycopy(strData, 0, data, 6, strData.length);
- os.write(data);
- }
-
- /**
- * Truncates the string as necessary
- *
- * @param str a character string
- * @return a possibly truncated string
- */
- private String truncate(String str) {
- if (str.length() > MAX_STR_LEN) {
- str = str.substring(0, MAX_STR_LEN);
- log.warn("truncated character string, longer than " + MAX_STR_LEN + " chars");
- }
- return str;
- }
-
- /**
- * Returns the text string as an encoded byte array
- *
- * @return the text string as an encoded byte array
- */
- private byte[] getStringAsBytes() throws UnsupportedEncodingException {
- return str.getBytes(AFPConstants.EBCIDIC_ENCODING);
- }
-
- /** {@inheritDoc} */
- public String toString() {
- return "GraphicsCharacterString{"
- + (coords != null ? "x=" + coords[0] + ", y=" + coords[1] : "")
- + "str='" + str + "'" + "}";
- }
- }
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