47 lines
1.1 KiB
Ruby
47 lines
1.1 KiB
Ruby
module Netlink
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module Route
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# This class allows objects to be created representing the
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# conditions given to the 'list' method
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class BaseFilter #:nodoc:
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def self.filter name, &blk
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define_method "#{name}=" do |matchval|
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@conds << [blk, matchval]
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end
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end
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def initialize(h)
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@conds = []
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h.each { |k,v| send "#{k}=", v }
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end
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def match(obj)
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!@conds.find { |blk,matchval| !blk[obj,matchval] }
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end
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end
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# Code which is common to all the NETLINK_ROUTE handlers
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class Handler
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def initialize(rtsocket = Netlink::Route::Socket.new)
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@rtsocket = rtsocket
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clear_cache
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end
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def index(v)
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@rtsocket.index(v)
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end
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def ifname(v)
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@rtsocket.ifname(v)
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end
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# Generic listing and filtering
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def do_list(data, filter, &blk)
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return data.each(&blk) unless filter
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return to_enum(:list, filter) unless block_given?
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fm = self.class::Filter.new(filter)
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data.each { |o| yield o if fm.match(o) }
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end
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end
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end
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end
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