From 535a04fa05f739ec16dd81666e3b0f82dfbd442d Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Wed, 9 Jan 2013 15:41:29 +0000
Subject: pdf-as-lib maven project files moved to pdf-as-lib

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/pdf-as/trunk@926 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../knowcenter/wag/exactparser/ByteArrayUtils.java | 148 +++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/ByteArrayUtils.java

(limited to 'pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/ByteArrayUtils.java')

diff --git a/pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/ByteArrayUtils.java b/pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/ByteArrayUtils.java
new file mode 100644
index 0000000..4442650
--- /dev/null
+++ b/pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/ByteArrayUtils.java
@@ -0,0 +1,148 @@
+/**
+ * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
+ * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
+ * joint initiative of the Federal Chancellery Austria and Graz University of
+ * Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ *
+ * $Id: ByteArrayUtils.java,v 1.1 2006/08/25 17:00:59 wprinz Exp $
+ */
+package at.knowcenter.wag.exactparser;
+
+import java.io.UnsupportedEncodingException;
+
+/**
+ * Abstract class that contains utility methods for handling byte arrays.
+ * 
+ * @author wprinz
+ */
+public abstract class ByteArrayUtils {
+
+  public static final String BYTE_ARRAY_ENCODING = "ISO-8859-1";
+
+  /**
+   * Converts the byte array to a String.
+   * 
+   * @param data
+   *          The byte array.
+   * @return Returns the String.
+   * @throws UnsupportedEncodingException
+   *           Forwarded exception
+   */
+  public static String convertByteArrayToString(final byte[] data) throws UnsupportedEncodingException {
+    return new String(data, BYTE_ARRAY_ENCODING);
+  }
+
+  /**
+   * Finds the first occurance of search in data starting to search from the
+   * given index.
+   * 
+   * @param data
+   *          The big array.
+   * @param index
+   *          The index to start searching from.
+   * @param search
+   *          The sought array.
+   * @return Returns the index of the found occurence or -1 if nothing was
+   *         found.
+   */
+  public static int indexOf(final byte[] data, final int index, final byte[] search) {
+    for (int i = index; i <= data.length - search.length; i++) {
+      if (compareByteArrays(data, i, search)) {
+        return i;
+      }
+    }
+    return -1;
+  }
+
+  /**
+   * Finds the last occurance of the array.
+   * 
+   * @param data
+   *          The source array to be searched.
+   * @param search
+   *          The sought array.
+   * @return Returns the index of the last occurance - or -1 if nothing was
+   *         found.
+   */
+  public static int lastIndexOf(final byte[] data, byte[] search) {
+    for (int index = data.length - search.length; index >= 0; index--) {
+      if (compareByteArrays(data, index, search)) {
+        return index;
+      }
+    }
+    return -1;
+  }
+
+  /**
+   * Compares the two byte arrays for equality.
+   * 
+   * @param data
+   *          The source array.
+   * @param index
+   *          In index into the source array marking where the comparison should
+   *          start.
+   * @param search
+   *          The sought array.
+   * @return Returns true if the first search.length bytes of data+index and
+   *         search match exactly. Returns false otherwise.
+   */
+  public static boolean compareByteArrays(final byte[] data, final int index, byte[] search) {
+    if (index < 0 || index >= data.length) {
+      throw new IndexOutOfBoundsException("The index " + index + " is out of bounds");
+    }
+
+    if (search.length > data.length) {
+      return false;
+    }
+
+    if (search.length > data.length - index) {
+      return false;
+    }
+
+    for (int i = 0; i < search.length; i++) {
+      if (data[index + i] != search[i]) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  /**
+   * Checks, if the sought data byte is contained within the byte array.
+   * 
+   * @param byte_array
+   *          The byte array.
+   * @param data
+   *          A data byte sought within the byte array.
+   * @return Returns true, if the data byte was found (at least once) in the
+   *         byte array, false otherwise.
+   */
+  public static boolean contains(final byte[] byte_array, final byte data) {
+    for (int i = 0; i < byte_array.length; i++) {
+      byte b =  byte_array[i];
+      if (b == data) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+}
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