Package org.parboiled.common
Class Base64
- java.lang.Object
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- org.parboiled.common.Base64
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public class Base64 extends Object
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static Base64
custom()
byte[]
decode(byte[] sArr)
Decodes a BASE64 encoded byte array.byte[]
decode(char[] sArr)
Decodes a BASE64 encoded char array.byte[]
decode(String str)
Decodes a BASE64 encodedString
.byte[]
decodeFast(byte[] sArr)
Decodes a BASE64 encoded byte array that is known to be resonably well formatted.byte[]
decodeFast(char[] sArr)
Decodes a BASE64 encoded char array that is known to be resonably well formatted.byte[]
decodeFast(String s)
Decodes a BASE64 encoded string that is known to be resonably well formatted.byte[]
encodeToByte(byte[] sArr, boolean lineSep)
Encodes a raw byte array into a BASE64byte[]
representation i accordance with RFC 2045.char[]
encodeToChar(byte[] sArr, boolean lineSep)
Encodes a raw byte array into a BASE64char[]
representation i accordance with RFC 2045.String
encodeToString(byte[] sArr, boolean lineSep)
Encodes a raw byte array into a BASE64String
representation in accordance with RFC 2045.char[]
getAlphabet()
static Base64
rfc2045()
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Constructor Detail
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Base64
public Base64(String alphabet)
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Method Detail
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custom
public static Base64 custom()
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rfc2045
public static Base64 rfc2045()
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decode
public final byte[] decode(char[] sArr)
Decodes a BASE64 encoded char array. All illegal characters will be ignored and can handle both arrays with and without line separators.- Parameters:
sArr
- The source array.null
or length 0 will return an empty array.- Returns:
- The decoded array of bytes. May be of length 0. Will be
null
if the legal characters (including '=') isn't divideable by 4. (I.e. definitely corrupted).
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decode
public final byte[] decode(byte[] sArr)
Decodes a BASE64 encoded byte array. All illegal characters will be ignored and can handle both arrays with and without line separators.- Parameters:
sArr
- The source array. Length 0 will return an empty array.null
will throw an exception.- Returns:
- The decoded array of bytes. May be of length 0. Will be
null
if the legal characters (including '=') isn't divideable by 4. (I.e. definitely corrupted).
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decode
public final byte[] decode(String str)
Decodes a BASE64 encodedString
. All illegal characters will be ignored and can handle both strings with and without line separators.
Note! It can be up to about 2x the speed to calldecode(str.toCharArray())
instead. That will create a temporary array though. This version will usestr.charAt(i)
to iterate the string.- Parameters:
str
- The source string.null
or length 0 will return an empty array.- Returns:
- The decoded array of bytes. May be of length 0. Will be
null
if the legal characters (including '=') isn't divideable by 4. (I.e. definitely corrupted).
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decodeFast
public final byte[] decodeFast(char[] sArr)
Decodes a BASE64 encoded char array that is known to be resonably well formatted. The method is about twice as fast asdecode(char[])
. The preconditions are:
+ The array must have a line length of 76 chars OR no line separators at all (one line).
+ Line separator must be "\r\n", as specified in RFC 2045 + The array must not contain illegal characters within the encoded string
+ The array CAN have illegal characters at the beginning and end, those will be dealt with appropriately.- Parameters:
sArr
- The source array. Length 0 will return an empty array.null
will throw an exception.- Returns:
- The decoded array of bytes. May be of length 0.
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decodeFast
public final byte[] decodeFast(byte[] sArr)
Decodes a BASE64 encoded byte array that is known to be resonably well formatted. The method is about twice as fast asdecode(byte[])
. The preconditions are:
+ The array must have a line length of 76 chars OR no line separators at all (one line).
+ Line separator must be "\r\n", as specified in RFC 2045 + The array must not contain illegal characters within the encoded string
+ The array CAN have illegal characters at the beginning and end, those will be dealt with appropriately.- Parameters:
sArr
- The source array. Length 0 will return an empty array.null
will throw an exception.- Returns:
- The decoded array of bytes. May be of length 0.
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decodeFast
public final byte[] decodeFast(String s)
Decodes a BASE64 encoded string that is known to be resonably well formatted. The method is about twice as fast asdecode(String)
. The preconditions are:
+ The array must have a line length of 76 chars OR no line separators at all (one line).
+ Line separator must be "\r\n", as specified in RFC 2045 + The array must not contain illegal characters within the encoded string
+ The array CAN have illegal characters at the beginning and end, those will be dealt with appropriately.- Parameters:
s
- The source string. Length 0 will return an empty array.null
will throw an exception.- Returns:
- The decoded array of bytes. May be of length 0.
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encodeToByte
public final byte[] encodeToByte(byte[] sArr, boolean lineSep)
Encodes a raw byte array into a BASE64byte[]
representation i accordance with RFC 2045.- Parameters:
sArr
- The bytes to convert. Ifnull
or length 0 an empty array will be returned.lineSep
- Optional "\r\n" after 76 characters, unless end of file.
No line separator will be in breach of RFC 2045 which specifies max 76 per line but will be a little faster.- Returns:
- A BASE64 encoded array. Never
null
.
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encodeToString
public final String encodeToString(byte[] sArr, boolean lineSep)
Encodes a raw byte array into a BASE64String
representation in accordance with RFC 2045.- Parameters:
sArr
- The bytes to convert. Ifnull
or length 0 an empty array will be returned.lineSep
- Optional "\r\n" after 76 characters, unless end of file.
No line separator will be in breach of RFC 2045 which specifies max 76 per line but will be a little faster.- Returns:
- A BASE64 encoded array. Never
null
.
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encodeToChar
public final char[] encodeToChar(byte[] sArr, boolean lineSep)
Encodes a raw byte array into a BASE64char[]
representation i accordance with RFC 2045.- Parameters:
sArr
- The bytes to convert. Ifnull
or length 0 an empty array will be returned.lineSep
- Optional "\r\n" after 76 characters, unless end of file.
No line separator will be in breach of RFC 2045 which specifies max 76 per line but will be a little faster.- Returns:
- A BASE64 encoded array. Never
null
.
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getAlphabet
public char[] getAlphabet()
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