Module: Ctags::Universal
- Extended by:
- Universal
- Includes:
- POSIX::Spawn
- Included in:
- Universal
- Defined in:
- lib/ctags/universal.rb
Constant Summary collapse
- BIN =
File.("../../../ext/dst/bin/ctags", __FILE__)
- CONFIG =
File.("../../ctags.cnf", __FILE__)
Instance Method Summary collapse
- #alive? ⇒ Boolean
- #execute(command, data = nil) ⇒ Object
- #start ⇒ Object
- #stop ⇒ Object
- #tags_for_file(filename, code = nil) ⇒ Object
Instance Method Details
#alive? ⇒ Boolean
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# File 'lib/ctags/universal.rb', line 37 def alive? return true if @pid && Process.kill(0, @pid) false rescue Errno::ENOENT, Errno::ESRCH false rescue Errno::EPERM raise "EPERM checking if child process is alive." end |
#execute(command, data = nil) ⇒ Object
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# File 'lib/ctags/universal.rb', line 46 def execute(command, data=nil) start unless alive? json = Yajl.dump(command) @in.puts json @in.write data if data warnings = [] = [] while line = @out.gets obj = Yajl.load(line, :symbolize_keys => true) if obj[:error] && obj[:fatal] raise obj[:error] elsif obj[:error] warnings << obj elsif obj[:_type] == 'tag' obj.delete :_type obj[:pattern].strip! << obj elsif obj[:completed] break else raise "unknown obj: #{obj.inspect}" end end if .empty? and warnings.any? raise Error, warnings[0][:error] end end |
#start ⇒ Object
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# File 'lib/ctags/universal.rb', line 13 def start args = [ '--options=NONE', "--options=#{CONFIG}", '--fields=*', '--interactive' ] @pid, @in, @out, @err = popen4(BIN, *args) at_exit{ stop } @info = Yajl.load(@out.gets, :symbolize_keys => true) end |
#stop ⇒ Object
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# File 'lib/ctags/universal.rb', line 26 def stop if @pid begin Process.kill('KILL', @pid) Process.waitpid(@pid) rescue Errno::ESRCH, Errno::ECHILD end end @pid = nil end |
#tags_for_file(filename, code = nil) ⇒ Object
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# File 'lib/ctags/universal.rb', line 80 def (filename, code=nil) cmd = {'command'=>'generate-tags','filename'=>filename} cmd['size'] = code.bytesize if code execute(cmd, code) end |