Dev:SimpleCoding

The YaCy API contains some strings which are encoded with a 'SimpleCoding' method (from class net.yacy.utils.crypt). Strings encoded with the SimpleCoding method have the following form:

<encoding-type-char>'|'<encoded-ascii>

where <encoding-type-char> is a single character which selects the used encoding and <encoded-ascii> is the content consisting of ASCII characters. There is a pipe-symbol ('|') between these two parts. The pipe symbol can be used as encoding-magic to test if a string is SimpleEncoded.

The <encoding-type-char> can have three different values:

'b' : the <encoded-ascii> is an EnhancedBase64-encoded String of the (binary) content
'z' : the <encoded-ascii> is an EnhancedBase64-encoded String of a gzip-compressed stream of the (binary) content
'p' : the <encoded-ascii> is the (not binary) content (that means that the encoded content is equal to the <encoded-ascii> and not actually encoded)

Most methods which write SimpleEncoding strings do first an encoding with and without gzip and compare the size of the output. Sometimes the gzip-encoded result is larger than the uncompressed result and that is the basis to choose 'b' or 'z'.

Example: a typical SimpleEncoding looks like:

z|H4sIAAAAAAAAAD2QT0-DUBDEv0ovetCV7L4_y2vMXqRWqbUlLXg1JL4oiQXCw5hq_O7SUj3_ZmZn5_vJd6FqaqGILeJUM8MqaT7qXpQjpaYOiravdl4IDSQjMRHCsgz91vtaFJKmQUlIysRQbFvvXwQhFGJZoXUGtqONdAxpJoYjYh1xHDEsTyRWHDuGdDQTxbAZyZCTilVWE8J9Gd5knj27h8VXs6CqhazpenE4Rci87_J96yX4umo6KPJELpEQYVUO5Wfrx9vV3foKyUD638axYcjL1yAX0KXCbKwxGrpCyBrlDoWyY-i537X9_ho2p-ciRK0HToOk9p9B4GZW9v5vi-Gucgph_n7IPptMJj-_CQ5ytGgBAAA

or

p|{Hash=sCJ6Tq8T0N9x,Port=8090,PeerType=junior}