Class: Launchy::Spawnable::Application

Inherits:
Object
  • Object
show all
Defined in:
lib/launchy/spawnable/application.rb

Direct Known Subclasses

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Constant Summary collapse

KNOWN_OS_FAMILIES = 
[ :windows, :darwin, :nix ]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.application_classes ⇒ Object 



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# File 'lib/launchy/spawnable/application.rb', line 14

def application_classes
    @application_classes ||= []
end

.find_application_class_for(*args) ⇒ Object 



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# File 'lib/launchy/spawnable/application.rb', line 18

def find_application_class_for(*args)
    Launchy.log "finding application classes for [#{args.join(' ')}]"
    application_classes.find do |klass| 
        if klass.handle?(*args) then
            Launchy.log "  #{klass.name}"
            true
        else
            false
        end
    end
end

.find_executable(bin, *paths) ⇒ Object

find an executable in the available paths mkrf did such a good job on this I had to borrow it.



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# File 'lib/launchy/spawnable/application.rb', line 50

def find_executable(bin,*paths)
    paths = ENV['PATH'].split(File::PATH_SEPARATOR) if paths.empty?
    paths.each do |path|
        file = File.join(path,bin)
        if File.executable?(file) then
            Launchy.log "found executable #{file}"
            return file
        end
    end
    Launchy.log "Unable to find `#{bin}' in paths #{paths.join(', ')}"
    return nil
end

.inherited(sub_class) ⇒ Object 



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# File 'lib/launchy/spawnable/application.rb', line 11

def inherited(sub_class)
    application_classes << sub_class
end

.my_os ⇒ Object

return the current ‘host_os’ string from ruby’s configuration



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# File 'lib/launchy/spawnable/application.rb', line 64

def my_os
    ::Config::CONFIG['host_os']
end

.my_os_family(test_os = my_os) ⇒ Object

detect what the current os is and return :windows, :darwin or :nix



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# File 'lib/launchy/spawnable/application.rb', line 69

def my_os_family(test_os = my_os)
    case test_os
    when /mswin/i
        family = :windows
    when /windows/i
        family = :windows
    when /darwin/i
        family = :darwin
    when /mac os/i
        family = :darwin
    when /solaris/i
        family = :nix
    when /bsd/i
        family = :nix
    when /linux/i
        family = :nix
    when /cygwin/i
        family = :nix
    else
        $stderr.puts "Unknown OS familiy for '#{test_os}'.  Please report this bug to #{Launchy::SPEC.email}"
        family = :unknown
    end
end

.nix_desktop_environment ⇒ Object

Determine the appropriate desktop environment for *nix machine. Currently this is linux centric. The detection is based upon the detection used by xdg-open from portland.freedesktop.org/wiki/XdgUtils



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# File 'lib/launchy/spawnable/application.rb', line 33

def nix_desktop_environment
    de = :generic
    if ENV["KDE_FULL_SESSION"] || ENV["KDE_SESSION_UID"] then
        de = :kde
    elsif ENV["GNOME_DESKTOP_SESSION_ID"] then
        de = :gnome
    elsif find_executable("xprop") then
        if %x[ xprop -root _DT_SAVE_MODE | grep ' = \"xfce\"$' ].strip.size > 0 then
            de = :xfce
        end
    end
    Launchy.log "nix_desktop_environment => #{de}"
    return de
end

Instance Method Details

#find_executable(bin, *paths) ⇒ Object

find an executable in the available paths



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# File 'lib/launchy/spawnable/application.rb', line 95

def find_executable(bin,*paths)
    Application.find_executable(bin,*paths)
end

#my_os ⇒ Object

return the current ‘host_os’ string from ruby’s configuration



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# File 'lib/launchy/spawnable/application.rb', line 100

def my_os
    Application.my_os
end

#my_os_family(test_os = my_os) ⇒ Object

detect what the current os is and return :windows, :darwin or :nix



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# File 'lib/launchy/spawnable/application.rb', line 105

def my_os_family(test_os = my_os)
    Application.my_os_family(test_os)
end

#run(cmd, *args) ⇒ Object

run the command



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# File 'lib/launchy/spawnable/application.rb', line 110

def run(cmd,*args)
    args.unshift(cmd)
    cmd_line = args.join(' ')
    Launchy.log "Spawning on #{my_os_family} : #{cmd_line}"
    if my_os_family == :windows then
        system cmd_line
    else
        # fork and the child process should NOT run any exit handlers
        child_pid = fork do 
                        cmd_line += " > /dev/null 2>&1"
                        system cmd_line
                        exit! 
                    end
        Process.detach(child_pid)
    end
end