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61 lines
996 B
Ruby
61 lines
996 B
Ruby
require 'open3'
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class Terminal
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BINARY_PATH = (Rails.root + "bin" + "terminal").to_s
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def initialize(width, height)
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@process = Process.new("#{BINARY_PATH} #{width} #{height}")
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end
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def feed(data)
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process.write("d\n#{data.bytesize}\n")
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process.write(data)
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end
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def snapshot
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process.write("p\n")
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lines = Yajl::Parser.new.parse(process.read_line)
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Snapshot.build(lines)
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end
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def cursor
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process.write("c\n")
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c = Yajl::Parser.new.parse(process.read_line)
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Cursor.new(c['x'], c['y'], c['visible'])
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end
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def release
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process.stop
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end
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private
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attr_reader :process
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class Process
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def initialize(command)
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@stdin, @stdout, @thread = Open3.popen2(command)
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end
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def write(data)
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raise "terminal died" unless @thread.alive?
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@stdin.write(data)
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end
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def read_line
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raise "terminal died" unless @thread.alive?
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@stdout.readline.strip
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end
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def stop
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@stdin.close
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end
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end
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end
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