diff options
Diffstat (limited to 'isoparser/src/main/java/com/coremedia/iso/.svn/text-base/Hex.java.svn-base')
-rw-r--r-- | isoparser/src/main/java/com/coremedia/iso/.svn/text-base/Hex.java.svn-base | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/coremedia/iso/.svn/text-base/Hex.java.svn-base b/isoparser/src/main/java/com/coremedia/iso/.svn/text-base/Hex.java.svn-base new file mode 100644 index 0000000..b3d55ef --- /dev/null +++ b/isoparser/src/main/java/com/coremedia/iso/.svn/text-base/Hex.java.svn-base @@ -0,0 +1,58 @@ +/* + * 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. + */ + +/* +Extracted from commons-codec + */ +package com.coremedia.iso; + +import java.io.ByteArrayOutputStream; + +/** + * Converts hexadecimal Strings. + */ +public class Hex { + private static final char[] DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; + + public static String encodeHex(byte[] data) { + return encodeHex(data, 0); + } + + public static String encodeHex(byte[] data, int group) { + int l = data.length; + char[] out = new char[(l << 1) + (group > 0 ? (l / group) : 0)]; + // two characters form the hex value. + for (int i = 0, j = 0; i < l; i++) { + if ((group > 0) && ((i % group) == 0) && j > 0) { + out[j++] = '-'; + } + + out[j++] = DIGITS[(0xF0 & data[i]) >>> 4]; + out[j++] = DIGITS[0x0F & data[i]]; + } + return new String(out); + } + + public static byte[] decodeHex(String hexString) { + ByteArrayOutputStream bas = new ByteArrayOutputStream(); + for (int i = 0; i < hexString.length(); i += 2) { + int b = Integer.parseInt(hexString.substring(i, i + 2), 16); + bas.write(b); + } + return bas.toByteArray(); + } +} |