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Class GIT.GVU.IMAP.MIME

java.lang.Object
   |
   +----GIT.GVU.IMAP.MIME

public class MIME

extends Object

MIME()

decodeBase64(String)

Given a string, give us the BASE64 decoding of it as a string.

decodeUnitBase64(byte[], int, byte[], int)

Thie function will convert an array of input data to an array of output data, one unit at a time.

findExtension(String)

Find a filename extension, given a mime type/subtype.

  public MIME()

  public static int decodeUnitBase64(byte input[],
                                     int inIndex,
                                     byte output[],
                                     int outIndex) throws IMAPException, InternalErr

Thie function will convert an array of input data to an array of output data, one unit at a time. A unit is 4 bytes of input data and 3 of output data. It returns the number of bytes actually converted. This is usually 3, but might be 2 or 1 if we are at the end of the data. You should be careful not to call this function when you are past EOF. Note: the input data size should always be a multiple of 4.

Parameters:

byte[] - input the array of input

int - inIndex index of the input byte array to read from (note: this must be 0 mod 4 but isn't checked)

byte[] - output the array of output

int - outIndex index in the output array to write to (note: this must be 0 mod 3 )

Returns:

int the number of input bytes converted. This will be a number from 1 to 4; usually 4. It will be 1, 2, or 3 only at the EOF. Note: Just because its 4 doesn't mean its not EOF if the boundary of the file falls evenly on a 4 byte boundary.

Throws: IMAPException

if the inputted base 64 encoded data has bad characters or too many consecutive = characters

Throws: InternalErr

is thrown if the BASE64 decoder gets confused about its own state

  public static String decodeBase64(String input) throws InternalErr

Given a string, give us the BASE64 decoding of it as a string.

Parameters:

String - s input string to decode

Returns:

a String with the decoded value or NULL if decode failed

Throws: InternalErr

is thrown if the unit decoder gives us a bogus return value

  public static String findExtension(String mt)

Find a filename extension, given a mime type/subtype.

Parameters:

String - mt MIME Type/Subtype

Returns:

String with the extension (note: if we don't know the MIME type/subtype you give us we return "")

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