118 lines
3.0 KiB
Factor
118 lines
3.0 KiB
Factor
! Copyright (C) 2014 John Benediktsson
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! See http://factorcode.org/license.txt for BSD license
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USING: accessors byte-arrays calendar colors.constants
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combinators formatting fry images images.loader
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images.loader.private images.viewer io io.encodings.binary
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io.encodings.string io.encodings.utf8 io.sockets io.styles
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io.timeouts kernel make math math.parser namespaces present
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prettyprint sequences splitting summary urls urls.encoding
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vocabs ;
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IN: gopher
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<PRIVATE
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CONSTANT: A_TEXT CHAR: 0
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CONSTANT: A_MENU CHAR: 1
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CONSTANT: A_CSO CHAR: 2
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CONSTANT: A_ERROR CHAR: 3
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CONSTANT: A_MACBINHEX CHAR: 4
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CONSTANT: A_PCBINHEX CHAR: 5
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CONSTANT: A_UUENCODED CHAR: 6
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CONSTANT: A_INDEX CHAR: 7
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CONSTANT: A_TELNET CHAR: 8
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CONSTANT: A_BINARY CHAR: 9
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CONSTANT: A_DUPLICATE CHAR: +
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CONSTANT: A_SOUND CHAR: s
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CONSTANT: A_EVENT CHAR: e
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CONSTANT: A_CALENDAR CHAR: c
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CONSTANT: A_HTML CHAR: h
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CONSTANT: A_TN3270 CHAR: T
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CONSTANT: A_MIME CHAR: M
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CONSTANT: A_IMAGE CHAR: I
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CONSTANT: A_WHOIS CHAR: w
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CONSTANT: A_QUERY CHAR: q
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CONSTANT: A_GIF CHAR: g
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CONSTANT: A_WWW CHAR: w
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CONSTANT: A_PLUS_IMAGE CHAR: :
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CONSTANT: A_PLUS_MOVIE CHAR: ;
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CONSTANT: A_PLUS_SOUND CHAR: <
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: gopher-get ( selector -- item-type byte-array )
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"/" split1 "" or
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[ dup length 1 > [ string>number ] [ first ] if ]
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[
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"?" split1 [ "\t" glue ] when*
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"\r\n" append utf8 encode write flush contents
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] bi* ;
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PRIVATE>
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ERROR: not-a-gopher-url url ;
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: gopher ( url -- item-type byte-array )
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dup url? [ >url ] unless
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dup protocol>> "gopher" = [ not-a-gopher-url ] unless {
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[ host>> ]
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[ port>> 70 or <inet> binary ]
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[ path>> rest [ "1/" ] when-empty ]
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[ query>> [ assoc>query url-decode "?" glue ] when* ]
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} cleave '[
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1 minutes input-stream get set-timeout
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_ gopher-get
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] with-client ;
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<PRIVATE
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TUPLE: gopher-link type name selector host port ;
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M: gopher-link summary >url present ;
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: <gopher-link> ( item -- gopher-link )
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unclip swap "\t" split first4 gopher-link boa ;
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M: gopher-link >url
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dup type>> CHAR: h = [
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selector>> "URL:" ?head drop
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] [
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{
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[ host>> ] [ port>> ] [ type>> ] [ selector>> ]
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} cleave "gopher://%s:%s/%s%s" sprintf
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] if >url ;
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: gopher-link. ( gopher-link -- )
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dup type>> CHAR: i = [
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name>> print
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] [
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[ name>> ] keep [
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presented ,,
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COLOR: blue foreground ,,
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] H{ } make format nl
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] if ;
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: gopher-text ( object -- lines )
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utf8 decode string-lines { "." } split1 drop ;
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: gopher-text. ( object -- )
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gopher-text [ print ] each ;
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: gopher-gif. ( object -- )
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"gif" (image-class) load-image* image. ;
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: gopher-menu. ( object -- )
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gopher-text [
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[ nl ] [ <gopher-link> gopher-link. ] if-empty
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] each ;
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PRIVATE>
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: gopher. ( url -- )
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gopher swap {
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{ A_TEXT [ gopher-text. ] }
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{ A_MENU [ gopher-menu. ] }
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{ A_INDEX [ gopher-menu. ] }
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{ A_GIF [ gopher-gif. ] }
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[ drop . ]
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} case ;
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