+/* ====================================================================
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2002 The Apache Software Foundation. All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ * if any, must include the following acknowledgment:
+ * "This product includes software developed by the
+ * Apache Software Foundation (http://www.apache.org/)."
+ * Alternately, this acknowledgment may appear in the software itself,
+ * if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Apache" and "Apache Software Foundation" and
+ * "Apache POI" must not be used to endorse or promote products
+ * derived from this software without prior written permission. For
+ * written permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache",
+ * "Apache POI", nor may "Apache" appear in their name, without
+ * prior written permission of the Apache Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
package org.apache.poi.util;
import java.io.IOException;
import java.util.List;
import java.util.ArrayList;
+/**
+ * Utilities to read hex from files.
+ *
+ * @author Marc Johnson
+ * @author Glen Stampoultzis (glens at apache.org)
+ */
public class HexRead
{
- public static byte[] readTestData( String filename )
+ /**
+ * This method reads hex data from a filename and returns a byte array.
+ * The file may contain line comments that are preceeded with a # symbol.
+ *
+ * @param filename The filename to read
+ * @return The bytes read from the file.
+ * @throws IOException If there was a problem while reading the file.
+ */
+ public static byte[] readData( String filename )
throws IOException
{
File file = new File( filename );
FileInputStream stream = new FileInputStream( file );
+ try
+ {
+ return readData(stream, -1);
+ }
+ finally
+ {
+ stream.close();
+ }
+ }
+
+ /**
+ * Same as readData(String) except that this method allows you to specify sections within
+ * a file. Sections are referenced using section headers in the form:
+ * <pre>
+ * [sectioname]
+ * </pre>
+ *
+ * @see #readData(String)
+ */
+ public static byte[] readData(String filename, String section)
+ throws IOException
+ {
+ File file = new File( filename );
+ FileInputStream stream = new FileInputStream( file );
+ try
+ {
+ StringBuffer sectionText = new StringBuffer();
+ boolean inSection = false;
+ int c = stream.read();
+ while (c != -1)
+ {
+ switch(c)
+ {
+ case '[':
+ inSection = true;
+ break;
+ case '\n': case '\r':
+ inSection = false;
+ sectionText = new StringBuffer();
+ break;
+ case ']':
+ inSection = false;
+ if (sectionText.toString().equals(section))
+ return readData(stream, '[');
+ sectionText = new StringBuffer();
+ break;
+ default:
+ if (inSection)
+ sectionText.append((char)c);
+ }
+
+ c = stream.read();
+ }
+ }
+ finally
+ {
+ stream.close();
+ }
+ throw new IOException("Section '" + section + "' not found");
+ }
+
+ static private byte[] readData( FileInputStream stream, int eofChar ) throws IOException
+ {
int characterCount = 0;
byte b = (byte) 0;
List bytes = new ArrayList();
while ( !done )
{
int count = stream.read();
+ char baseChar = 'a';
+
+ if ( count == eofChar)
+ break;
switch ( count )
{
case '#':
readToEOL(stream);
break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
+ case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
b <<= 4;
b += (byte) ( count - '0' );
characterCount++;
}
break;
- case 'A':
- case 'B':
- case 'C':
- case 'D':
- case 'E':
- case 'F':
- b <<= 4;
- b += (byte) ( count + 10 - 'A' );
- characterCount++;
- if ( characterCount == 2 )
- {
- bytes.add( new Byte( b ) );
- characterCount = 0;
- b = (byte) 0;
- }
- break;
+ case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+ baseChar = 'A';
- case 'a':
- case 'b':
- case 'c':
- case 'd':
- case 'e':
- case 'f':
+ case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
b <<= 4;
- b += (byte) ( count + 10 - 'a' );
+ b += (byte) ( count + 10 - baseChar );
characterCount++;
if ( characterCount == 2 )
{
break;
}
}
- stream.close();
Byte[] polished = (Byte[]) bytes.toArray( new Byte[0] );
byte[] rval = new byte[polished.length];
projects / poi.git / commitdiff