checksum-lines ( lines checksum -- value )
Factor handbook » Input and output » Checksums

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Vocabulary
checksums

Inputs

lines	a sequence of sequences of bytes
checksum	a checksum specifier

Outputs

value

a byte-array

Generic word contract
Computes the checksum of all data in a sequence.

Examples

USING: checksums checksums.crc32 prettyprint ; { "Take me out to the ball game" "Take me out with the crowd" } crc32 checksum-lines .
B{ 111 205 9 27 }

Definition

IN: checksums

GENERIC: checksum-lines ( lines checksum -- value )

Methods

USING: checksums kernel sequences ;

M: checksum checksum-lines [ B{ 10 } join ] dip checksum-bytes ;


USING: checksums checksums.crc16 sequences ;

M: crc16 checksum-lines
    init-crc16 [ [ (crc16) ] each 10 (crc16) ] each finish-crc16
    ; inline


USING: checksums checksums.crc32 sequences ;

M: crc32 checksum-lines
    init-crc32 [ [ (crc32) ] each 10 (crc32) ] each finish-crc32
    ; inline