! Copyright (C) 2008 Doug Coleman, Daniel Ehrenberg.
! See http://factorcode.org/license.txt for BSD license.
USING: combinators io io.binary io.encodings.binary
-io.streams.byte-array io.streams.string kernel math namespaces
+io.streams.byte-array kernel math namespaces
sequences strings io.crlf ;
IN: base64
+ERROR: malformed-base64 ;
+
<PRIVATE
: read1-ignoring ( ignoring -- ch )
f 0 f f f 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 f f f f f f 26 27 28 29 30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49 50 51
- } nth ; inline
+ } nth [ malformed-base64 ] unless* ; inline
SYMBOL: column
: write1-lines ( ch -- )
write1
column get [
- 1+ [ 76 = [ crlf ] when ]
+ 1 + [ 76 = [ crlf ] when ]
[ 76 mod column set ] bi
] when* ;
] with each ; inline
: encode-pad ( seq n -- )
- [ 3 0 pad-right binary [ encode3 ] with-byte-writer ]
- [ 1+ ] bi* head-slice 4 CHAR: = pad-right write-lines ; inline
-
-ERROR: malformed-base64 ;
+ [ 3 0 pad-tail binary [ encode3 ] with-byte-writer ]
+ [ 1 + ] bi* head-slice 4 CHAR: = pad-tail write-lines ; inline
: decode4 ( seq -- )
[ 0 [ base64>ch swap 6 shift bitor ] reduce 3 >be ]
} case ;
: >base64 ( seq -- base64 )
- binary [ [ encode-base64 ] with-string-reader ] with-byte-writer ;
+ binary [ binary [ encode-base64 ] with-byte-reader ] with-byte-writer ;
: base64> ( base64 -- seq )
- [ binary [ decode-base64 ] with-byte-reader ] with-string-writer ;
+ binary [ binary [ decode-base64 ] with-byte-reader ] with-byte-writer ;
: >base64-lines ( seq -- base64 )
- binary [ [ encode-base64-lines ] with-string-reader ] with-byte-writer ;
+ binary [ binary [ encode-base64-lines ] with-byte-reader ] with-byte-writer ;