57 lines
1.6 KiB
Factor
57 lines
1.6 KiB
Factor
! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel sequences io.files io.files.temp io.launcher
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io.pathnames io.encodings.ascii io.streams.string http.client
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generalizations combinators math.parser math.vectors
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math.intervals interval-maps memoize csv accessors assocs
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strings math splitting grouping arrays combinators.smart ;
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IN: geo-ip
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: db-path ( -- path ) "IpToCountry.csv" temp-file ;
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CONSTANT: db-url "http://software77.net/cgi-bin/ip-country/geo-ip.pl?action=download"
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: download-db ( -- path )
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db-path dup exists? [
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db-url over ".gz" append download-to
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{ "gunzip" } over ".gz" append (normalize-path) suffix try-process
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] unless ;
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TUPLE: ip-entry from to registry assigned city cntry country ;
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: parse-ip-entry ( row -- ip-entry )
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[
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{
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[ string>number ]
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[ string>number ]
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[ ]
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[ ]
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[ ]
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[ ]
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[ ]
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} spread
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] input<sequence ip-entry boa ;
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MEMO: ip-db ( -- seq )
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download-db ascii file-lines
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[ "#" head? not ] filter "\n" join <string-reader> csv
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[ parse-ip-entry ] map ;
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: filter-overlaps ( alist -- alist' )
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2 clump
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[ first2 [ first second ] [ first first ] bi* < ] filter
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[ first ] map ;
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MEMO: ip-intervals ( -- interval-map )
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ip-db [ [ [ from>> ] [ to>> ] bi 2array ] keep ] { } map>assoc
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filter-overlaps <interval-map> ;
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GENERIC: lookup-ip ( ip -- ip-entry )
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M: string lookup-ip
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"." split [ string>number ] map
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{ HEX: 1000000 HEX: 10000 HEX: 100 HEX: 1 } v.
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lookup-ip ;
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M: integer lookup-ip ip-intervals interval-at ;
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