Package org.apache.cxf.common.util
Class Base64Utility
java.lang.Object
org.apache.cxf.common.util.Base64Utility
This class converts to/from base64. The alternative conversions include:
encode:
byte[] into String
byte[] into char[]
byte[] into OutStream
byte[] into Writer
decode:
char[] into byte[]
String into byte[]
char[] into OutStream
String into OutStream
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Method Summary
Modifier and TypeMethodDescriptionstatic voiddecode(char[] id, int o, int l, OutputStream ostream) static byte[]static byte[]static voiddecode(String id, OutputStream ostream) static byte[]decodeChunk(char[] id, int o, int l) Thedecode_chunkroutine decodes a chunk of data into its native encoding.static Stringencode(byte[] id) static Stringencode(byte[] id, boolean urlSafe) static voidstatic voidencodeAndStream(byte[] id, int o, int l, boolean urlSafe, OutputStream os) static voidencodeAndStream(byte[] id, int o, int l, OutputStream os) static char[]encodeChunk(byte[] id, int o, int l) static char[]encodeChunk(byte[] id, int o, int l, boolean urlSafe) static voidencodeChunk(byte[] id, int o, int l, OutputStream ostream) static booleanisValidBase64(int ch)
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Method Details
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decodeChunk
Thedecode_chunkroutine decodes a chunk of data into its native encoding. base64 encodes each 3 octets of data into 4 characters from a limited 64 character set. The 3 octets are joined to form 24 bits which are then split into 4 x 6bit values. Each 6 bit value is then used as an index into the 64 character table of base64 chars. If the total data length is not a 3 octet multiple the '=' char is used as padding for the final 4 char group, either 1 octet + '==' or 2 octets + '='.- Parameters:
id- The input data to be processedo- The offset from which to begin processingl- The length (bound) at which processing is to end- Returns:
- The decoded data
- Throws:
Base64Exception- Thrown is processing fails due to formatting exceptions in the encoded data
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decode
- Throws:
Base64Exception
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decode
- Throws:
Base64Exception
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decode
- Throws:
Base64Exception
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decode
- Throws:
Base64Exception
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encode
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encode
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encodeChunk
public static char[] encodeChunk(byte[] id, int o, int l) -
encodeChunk
public static char[] encodeChunk(byte[] id, int o, int l, boolean urlSafe) -
encodeAndStream
- Throws:
IOException
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encodeAndStream
public static void encodeAndStream(byte[] id, int o, int l, boolean urlSafe, OutputStream os) throws IOException - Throws:
IOException
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encodeChunk
public static void encodeChunk(byte[] id, int o, int l, OutputStream ostream) throws Base64Exception - Throws:
Base64Exception
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encode
- Throws:
Base64Exception
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isValidBase64
public static boolean isValidBase64(int ch)
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