Class: SystemUniversal
Defined Under Namespace
Classes: StreamReader
Class Method Summary collapse
Instance Method Summary collapse
- #child_program(config) ⇒ Object
- #child_setup(tmp) ⇒ Object
- #getopts(opts = {}) ⇒ Object
-
#initialize(argv, opts = {}, &block) ⇒ SystemUniversal
constructor
instance methods.
- #new_thread(child_pid, block) ⇒ Object
- #quietly ⇒ Object
- #quote(*args, &block) ⇒ Object
- #relay(srcdst) ⇒ Object
- #slug_for(*args) ⇒ Object
- #systemu ⇒ Object
- #tmpdir(d = Dir.tmpdir, max = 42, &b) ⇒ Object
- #version ⇒ Object
Constructor Details
#initialize(argv, opts = {}, &block) ⇒ SystemUniversal
instance methods
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# File 'lib/systemu.rb', line 52 def initialize argv, opts = {}, &block getopt = getopts opts @argv = argv @block = block @stdin = getopt[ ['stdin', 'in', '0', 0] ] @stdout = getopt[ ['stdout', 'out', '1', 1] ] @stderr = getopt[ ['stderr', 'err', '2', 2] ] @env = getopt[ 'env' ] @cwd = getopt[ 'cwd' ] @host = getopt[ 'host', self.class.host ] @ppid = getopt[ 'ppid', self.class.ppid ] @pid = getopt[ 'pid', self.class.pid ] @ruby = getopt[ 'ruby', self.class.ruby ] end |
Class Method Details
.description ⇒ Object
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# File 'lib/systemu.rb', line 20 def SystemUniversal.description "universal capture of stdout and stderr and handling of child process pid for windows, *nix, etc." end |
.quote(*words) ⇒ Object
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# File 'lib/systemu.rb', line 43 def quote(*words) words.map{|word| word.inspect}.join(' ') end |
.version ⇒ Object
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# File 'lib/systemu.rb', line 18 def SystemUniversal.version() SystemUniversal::VERSION end |
Instance Method Details
#child_program(config) ⇒ Object
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# File 'lib/systemu.rb', line 176 def child_program config <<-program # encoding: utf-8 PIPE = STDOUT.dup begin config = Marshal.load(IO.read('#{ config }')) argv = config['argv'] env = config['env'] cwd = config['cwd'] stdin = config['stdin'] stdout = config['stdout'] stderr = config['stderr'] Dir.chdir cwd if cwd env.each{|k,v| ENV[k.to_s] = v.to_s} if env STDIN.reopen stdin STDOUT.reopen stdout STDERR.reopen stderr PIPE.puts "pid: \#{ Process.pid }" PIPE.flush ### the process is ready yo! PIPE.close exec *argv rescue Exception => e PIPE.write Marshal.dump(e) rescue nil exit 42 end program end |
#child_setup(tmp) ⇒ Object
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# File 'lib/systemu.rb', line 138 def child_setup tmp stdin = File.(File.join(tmp, 'stdin')) stdout = File.(File.join(tmp, 'stdout')) stderr = File.(File.join(tmp, 'stderr')) program = File.(File.join(tmp, 'program')) config = File.(File.join(tmp, 'config')) if @stdin open(stdin, 'wb'){|f| relay @stdin => f} else FileUtils.touch stdin end FileUtils.touch stdout FileUtils.touch stderr c = {} c['argv'] = @argv c['env'] = @env c['cwd'] = @cwd c['stdin'] = stdin c['stdout'] = stdout c['stderr'] = stderr c['program'] = program open(config, 'wb'){|f| Marshal.dump(c, f)} open(program, 'wb'){|f| f.write child_program(config)} c end |
#getopts(opts = {}) ⇒ Object
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# File 'lib/systemu.rb', line 260 def getopts opts = {} lambda do |*args| keys, default, _ = args catch(:opt) do [keys].flatten.each do |key| [key, key.to_s, key.to_s.intern].each do |k| throw :opt, opts[k] if opts.has_key?(k) end end default end end end |
#new_thread(child_pid, block) ⇒ Object
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# File 'lib/systemu.rb', line 127 def new_thread child_pid, block q = Queue.new Thread.new(child_pid) do |cid| current = Thread.current current.abort_on_exception = true q.push current block.call cid end q.pop end |
#quietly ⇒ Object
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# File 'lib/systemu.rb', line 168 def quietly v = $VERBOSE $VERBOSE = nil yield ensure $VERBOSE = v end |
#quote(*args, &block) ⇒ Object
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# File 'lib/systemu.rb', line 123 def quote *args, &block SystemUniversal.quote(*args, &block) end |
#relay(srcdst) ⇒ Object
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# File 'lib/systemu.rb', line 210 def relay srcdst src, dst, _ = srcdst.to_a.first if src.respond_to? 'read' while((buffer = src.read(8192))); dst << buffer; end else if src.respond_to?(:each_line) src.each_line{|buf| dst << buf} else src.each{|buf| dst << buf} end end end |
#slug_for(*args) ⇒ Object
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# File 'lib/systemu.rb', line 223 def slug_for(*args) = args.last.is_a?(Hash) ? args.pop : {} join = ([:join] || ['join'] || '_').to_s string = args.flatten.compact.join(join) words = string.to_s.scan(%r|[/\w]+|) words.map!{|word| word.gsub %r|[^/0-9a-zA-Z_-]|, ''} words.delete_if{|word| word.nil? or word.strip.empty?} words.join(join).downcase.gsub('/', (join * 2)) end |
#systemu ⇒ Object
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# File 'lib/systemu.rb', line 70 def systemu tmpdir do |tmp| c = child_setup tmp status = nil begin thread = nil quietly{ IO.popen "#{ quote(@ruby) } #{ quote(c['program']) }", 'rb+' do |pipe| line = pipe.gets case line when %r/^pid: \d+$/ cid = Integer line[%r/\d+/] else begin buf = pipe.read buf = "#{ line }#{ buf }" e = Marshal.load buf raise unless Exception === e raise e rescue raise "systemu: Error - process interrupted!\n#{ buf }\n" end end thread = new_thread cid, @block if @block pipe.read rescue nil end } status = $? ensure if thread begin class << status attr 'thread' end status.instance_eval{ @thread = thread } rescue 42 end end end if @stdout or @stderr open(c['stdout'], 'rb'){|f| relay f => @stdout} if @stdout open(c['stderr'], 'rb'){|f| relay f => @stderr} if @stderr status else [status, open(c['stdout'], 'rb'){|f| f.read}, open(c['stderr'], 'rb'){|f| f.read}] end end end |
#tmpdir(d = Dir.tmpdir, max = 42, &b) ⇒ Object
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# File 'lib/systemu.rb', line 233 def tmpdir d = Dir.tmpdir, max = 42, &b i = -1 and loop{ i += 1 tmp = File.join(d, slug_for("systemu_#{ @host }_#{ @ppid }_#{ @pid }_#{ rand }_#{ i += 1 }")) begin Dir.mkdir tmp rescue Errno::EEXIST raise if i >= max next end break( if b begin b.call tmp ensure FileUtils.rm_rf tmp unless SystemU.turd end else tmp end ) } end |
#version ⇒ Object
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# File 'lib/systemu.rb', line 19 def version() SystemUniversal::VERSION end |