package be.nikiroo.utils;
+import java.io.IOException;
+
/**
* <p>Encodes and decodes to and from Base64 notation.</p>
* <p>Homepage: <a href="http://iharder.net/base64">http://iharder.net/base64</a>.</p>
/** Preferred encoding. */
- private final static String PREFERRED_ENCODING = "US-ASCII";
+ private final static String PREFERRED_ENCODING = "UTF-8";
private final static byte WHITE_SPACE_ENC = -5; // Indicates white space in encoding
} // end if: compress
// Else, don't compress. Better not to use streams at all then.
- else {
- boolean breakLines = (options & DO_BREAK_LINES) != 0;
-
- //int len43 = len * 4 / 3;
- //byte[] outBuff = new byte[ ( len43 ) // Main 4:3
- // + ( (len % 3) > 0 ? 4 : 0 ) // Account for padding
- // + (breakLines ? ( len43 / MAX_LINE_LENGTH ) : 0) ]; // New lines
- // Try to determine more precisely how big the array needs to be.
- // If we get it right, we don't have to do an array copy, and
- // we save a bunch of memory.
- int encLen = ( len / 3 ) * 4 + ( len % 3 > 0 ? 4 : 0 ); // Bytes needed for actual encoding
- if( breakLines ){
- encLen += encLen / MAX_LINE_LENGTH; // Plus extra newline characters
- }
- byte[] outBuff = new byte[ encLen ];
+ boolean breakLines = (options & DO_BREAK_LINES) != 0;
+
+ //int len43 = len * 4 / 3;
+ //byte[] outBuff = new byte[ ( len43 ) // Main 4:3
+ // + ( (len % 3) > 0 ? 4 : 0 ) // Account for padding
+ // + (breakLines ? ( len43 / MAX_LINE_LENGTH ) : 0) ]; // New lines
+ // Try to determine more precisely how big the array needs to be.
+ // If we get it right, we don't have to do an array copy, and
+ // we save a bunch of memory.
+ int encLen = ( len / 3 ) * 4 + ( len % 3 > 0 ? 4 : 0 ); // Bytes needed for actual encoding
+ if( breakLines ){
+ encLen += encLen / MAX_LINE_LENGTH; // Plus extra newline characters
+ }
+ byte[] outBuff = new byte[ encLen ];
- int d = 0;
- int e = 0;
- int len2 = len - 2;
- int lineLength = 0;
- for( ; d < len2; d+=3, e+=4 ) {
- encode3to4( source, d+off, 3, outBuff, e, options );
+ int d = 0;
+ int e = 0;
+ int len2 = len - 2;
+ int lineLength = 0;
+ for( ; d < len2; d+=3, e+=4 ) {
+ encode3to4( source, d+off, 3, outBuff, e, options );
- lineLength += 4;
- if( breakLines && lineLength >= MAX_LINE_LENGTH )
- {
- outBuff[e+4] = NEW_LINE;
- e++;
- lineLength = 0;
- } // end if: end of line
- } // en dfor: each piece of array
-
- if( d < len ) {
- encode3to4( source, d+off, len - d, outBuff, e, options );
- e += 4;
- } // end if: some padding needed
-
-
- // Only resize array if we didn't guess it right.
- if( e <= outBuff.length - 1 ){
- // If breaking lines and the last byte falls right at
- // the line length (76 bytes per line), there will be
- // one extra byte, and the array will need to be resized.
- // Not too bad of an estimate on array size, I'd say.
- byte[] finalOut = new byte[e];
- System.arraycopy(outBuff,0, finalOut,0,e);
- //System.err.println("Having to resize array from " + outBuff.length + " to " + e );
- return finalOut;
- } else {
- //System.err.println("No need to resize array.");
- return outBuff;
- }
+ lineLength += 4;
+ if( breakLines && lineLength >= MAX_LINE_LENGTH )
+ {
+ outBuff[e+4] = NEW_LINE;
+ e++;
+ lineLength = 0;
+ } // end if: end of line
+ } // en dfor: each piece of array
+
+ if( d < len ) {
+ encode3to4( source, d+off, len - d, outBuff, e, options );
+ e += 4;
+ } // end if: some padding needed
+
+
+ // Only resize array if we didn't guess it right.
+ if( e <= outBuff.length - 1 ){
+ // If breaking lines and the last byte falls right at
+ // the line length (76 bytes per line), there will be
+ // one extra byte, and the array will need to be resized.
+ // Not too bad of an estimate on array size, I'd say.
+ byte[] finalOut = new byte[e];
+ System.arraycopy(outBuff,0, finalOut,0,e);
+ //System.err.println("Having to resize array from " + outBuff.length + " to " + e );
+ return finalOut;
+ }
- } // end else: don't compress
-
+ //System.err.println("No need to resize array.");
+ return outBuff;
} // end encodeBytesToBytes
* @throws java.io.IOException If bogus characters exist in source data
* @since 1.3
*/
- public static byte[] decode( byte[] source, int off, int len, int options )
+ @SuppressWarnings("cast")
+ public static byte[] decode( byte[] source, int off, int len, int options )
throws java.io.IOException {
// Lots of error checking and exception throwing
} // end catch
//</change>
+ return niki_decode(bytes, 0, bytes.length, options);
+ }
+
+ /**
+ * Decodes data from Base64 notation, automatically
+ * detecting gzip-compressed data and decompressing it.
+ *
+ * @param s the string to decode
+ * @param options encode options such as URL_SAFE
+ * @return the decoded data
+ * @throws java.io.IOException if there is an error
+ * @throws NullPointerException if <tt>s</tt> is null
+ * @since niki
+ */
+ public static byte[] niki_decode( byte[] bytes, int offset, int count, int options ) throws java.io.IOException {
+
// Decode
- bytes = decode( bytes, 0, bytes.length, options );
+ bytes = decode( bytes, offset, count, options );
// Check to see if it's gzip-compressed
// GZIP Magic Two-Byte Number: 0x8b1f (35615)
boolean dontGunzip = (options & DONT_GUNZIP) != 0;
if( (bytes != null) && (bytes.length >= 4) && (!dontGunzip) ) {
- int head = ((int)bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
+ @SuppressWarnings("cast")
+ int head = ((int)bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
if( java.util.zip.GZIPInputStream.GZIP_MAGIC == head ) {
java.io.ByteArrayInputStream bais = null;
java.util.zip.GZIPInputStream gzis = null;
@Override
public Class<?> resolveClass(java.io.ObjectStreamClass streamClass)
throws java.io.IOException, ClassNotFoundException {
- Class c = Class.forName(streamClass.getName(), false, loader);
+ @SuppressWarnings("rawtypes")
+ Class c = Class.forName(streamClass.getName(), false, loader);
if( c == null ){
return super.resolveClass(streamClass);
- } else {
- return c; // Class loader knows of this class.
- } // end else: not null
+ }
+ return c; // Class loader knows of this class.
} // end resolveClass
}; // end ois
} // end else: no custom class loader
lineLength = 0;
return '\n';
} // end if
- else {
- lineLength++; // This isn't important when decoding
- // but throwing an extra "if" seems
- // just as wasteful.
-
- int b = buffer[ position++ ];
+ lineLength++; // This isn't important when decoding
+ // but throwing an extra "if" seems
+ // just as wasteful.
+
+ int b = buffer[ position++ ];
- if( position >= bufferLength ) {
- position = -1;
- } // end if: end
+ if( position >= bufferLength ) {
+ position = -1;
+ } // end if: end
- return b & 0xFF; // This is how you "cast" a byte that's
- // intended to be unsigned.
- } // end else
+ return b & 0xFF; // This is how you "cast" a byte that's
+ // intended to be unsigned.
} // end if: position >= 0
- // Else error
- else {
- throw new java.io.IOException( "Error in Base64 code reading stream." );
- } // end else
+ throw new java.io.IOException( "Error in Base64 code reading stream." );
} // end read
@Override
public void close() throws java.io.IOException {
// 1. Ensure that pending characters are written
- flushBase64();
+
+ // niki: removed since it is now in flush()
+ //flushBase64();
// 2. Actually close the stream
// Base class both flushes and closes.
this.suspendEncoding = false;
} // end resumeEncoding
-
+ @Override
+ // added by niki
+ public void flush() throws IOException {
+ flushBase64();
+ super.flush();
+ }
} // end inner class OutputStream
git://git.nikiroo.be / nikiroo-utils.git / blobdiff