Class: ArTTY::SystemInfo

Inherits:
Object
  • Object
show all
Defined in:
lib/arTTY/system_info.rb

Instance Method Summary collapse

Constructor Details

#initialize(fields = nil) ⇒ SystemInfo

Returns a new instance of SystemInfo.



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# File 'lib/arTTY/system_info.rb', line 62

def initialize(fields = nil)
    @info = Hash.new
    @fields = fields
    if (fields.nil? || fields.empty?)
        @fields = [
            "hostname",
            "os",
            "kernel",
            "uptime",
            "ip",
            "shell",
            "tty",
            "cpu",
            "ram",
            "fs",
            "colors"
        ]
    end
    refresh
end

Instance Method Details

#cpu ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 8

def cpu
    if (Pathname.new("/proc/cpuinfo").exist?)
        File.read("/proc/cpuinfo").each_line do |line|
            line.match(/name\s+:\s+(.+)/) do |m|
                out = m[1].gsub(/\((R|TM)\)| (@|CPU)/, "")
                return out.gsub(/\s+/, " ").strip
            end
        end
    end
    return ""
end

#fields(fields) ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 20

def fields(fields)
    @fields = fields
    refresh
end

#fs_usage(fs = "/") ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 25

def fs_usage(fs = "/")
    return "" if (ScoobyDoo.where_are_you("df").nil?)

    df = %x(df -h #{fs} | tail -n 1)
    df.match(/^\S+\s+(\S+)\s+(\S+)\s+\S+\s+(\S+)/) do |m|
        return "#{m[2]} / #{m[1]} (#{m[3]})".strip
    end

    return ""
end

#height ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 36

def height
    return @info.keys.length
end

#hostname ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 40

def hostname
    return "" if (ScoobyDoo.where_are_you("hostname").nil?)
    return %x(hostname).split(".")[0].strip
end

#info ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 45

def info
    info = Array.new

    fillto = @info.keys.map(&:length).max
    @info.each do |k, v|
        if (k.empty?)
            info.push("")
            info.push(v)
        else
            lfill = " " * (fillto - k.length)
            info.push("#{lfill}#{k.blue}: #{v.light_blue}")
        end
    end

    return info
end

#ipv4 ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 83

def ipv4
    return "" if (ScoobyDoo.where_are_you("ip").nil?)
    %x(ip r).match(/^default.+dev\s+(\S+)/) do |dev|
        %x(ip -o a s #{dev[1]}).match(/\s+inet\s+(\S+)/) do |ip|
            return ip[1].strip
        end
    end
    return ""
end

#ipv6 ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 93

def ipv6
    return "" if (ScoobyDoo.where_are_you("ip").nil?)
    %x(ip r).match(/^default.+dev\s+(\S+)/) do |dev|
        %x(ip -o a s #{dev[1]}).match(
            /\s+inet6\s+((?!fe[89ab])\S+)/i
        ) do |ip|
            return ip[1].strip
        end
    end
    return ""
end

#kernel ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 105

def kernel
    return "" if (ScoobyDoo.where_are_you("uname").nil?)
    return %x(uname -r).strip
end

#os ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 110

def os
    return "" if (ScoobyDoo.where_are_you("uname").nil?)

    os = Pathname.new("/etc/os-release").expand_path
    if (os.exist?)
        File.read(os).each_line do |line|
            line.match(/^PRETTY_NAME="(.+)"/) do |m|
                return "#{m[1].strip} #{%x(uname -m).strip}"
            end
        end
    end

    return "#{%x(uname -s).strip} #{%x(uname -m).strip}"
end

#ram ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 125

def ram
    return "" if (ScoobyDoo.where_are_you("free").nil?)

    %x(free -m).match(/Mem:\s+(\d+)\s+(\d+)/) do |m|
        return "#{m[2]} MB / #{m[1]} MB".strip
    end

    return ""
end

#refresh ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 135

def refresh
    @info.clear
    @fields.each do |field|
        case field
        when /^colors$/i
            @info[""] = [
                "▄▄▄".light_black.on_black,
                "▄▄▄".light_red.on_red,
                "▄▄▄".light_green.on_green,
                "▄▄▄".light_yellow.on_yellow,
                "▄▄▄".light_blue.on_blue,
                "▄▄▄".light_magenta.on_magenta,
                "▄▄▄".light_cyan.on_cyan,
                "▄▄▄".light_white.on_white
            ].join
        when /^cpu$/i
            @info["CPU"] = cpu
        when /^fs$/i
            rootfs = fs_usage
            homefs = fs_usage(ENV["HOME"])
            @info["RootFS"] = rootfs
            @info["HomeFS"] = homefs if (homefs != rootfs)
        when /^host(name)?$/i
            @info["Host"] = hostname
        when /^ip$/i
            @info["IPv4"] = ipv4
            @info["IPv6"] = ipv6
        when /^ipv4$/i
            @info["IPv4"] = ipv4
        when /^ipv6$/i
            @info["IPv6"] = ipv6
        when /^kernel$/i
            @info["Kernel"] = kernel
        when /^os$/i
            @info["OS"] = os
        when /^ram$/i
            @info["RAM"] = ram
        when /^shell$/i
            @info["Shell"] = shell
        when /^tty$/i
            @info["TTY"] = tty
        when /^uptime$/i
            @info["Uptime"] = uptime
        end
    end
    @info.delete_if do |k, v|
        v.empty?
    end
end

#shell ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 185

def shell
    return "" if (ENV["SHELL"].nil?)
    return ENV["SHELL"].strip
end

#tty ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 190

def tty
    return "" if (ScoobyDoo.where_are_you("tty").nil?)
    return %x(tty 2>/dev/null).strip
end

#uptime ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 195

def uptime
    return "" if (ScoobyDoo.where_are_you("uptime").nil?)

    up = %x(uptime).gsub(/^.+up\s+|,\s+\d+\s+user.+$/, "").strip
    up.gsub!(/(days?)\s+/, "\\1, ")
    up.gsub!(/0?(\d+):0?(\d+)/, "\\1 hour, \\2 min")
    up.gsub!(/(0 hour, |, 0 min)/, "")
    up.gsub!(/((\d\d+|[2-9]) (hour|min))/, "\\1s")
    return up.gsub(/\s+/, " ").strip
end

#width ⇒ Object 



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# File 'lib/arTTY/system_info.rb', line 206

def width
    return 0 if (@info.empty?)
    k = @info.keys.map(&:plain).map(&:length).max
    v = @info.values.map(&:plain).map(&:length).max
    return k + v + 2
end