diff options
Diffstat (limited to 'trunk/lib/open3.rb')
-rw-r--r-- | trunk/lib/open3.rb | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/trunk/lib/open3.rb b/trunk/lib/open3.rb deleted file mode 100644 index d776de7445..0000000000 --- a/trunk/lib/open3.rb +++ /dev/null @@ -1,98 +0,0 @@ -# -# = open3.rb: Popen, but with stderr, too -# -# Author:: Yukihiro Matsumoto -# Documentation:: Konrad Meyer -# -# Open3 gives you access to stdin, stdout, and stderr when running other -# programs. -# - -# -# Open3 grants you access to stdin, stdout, stderr and a thread to wait the -# child process when running another program. -# -# Example: -# -# require "open3" -# include Open3 -# -# stdin, stdout, stderr, wait_thr = popen3('nroff -man') -# -# Open3.popen3 can also take a block which will receive stdin, stdout, -# stderr and wait_thr as parameters. -# This ensures stdin, stdout and stderr are closed and -# the process is terminated once the block exits. -# -# Example: -# -# require "open3" -# -# Open3.popen3('nroff -man') { |stdin, stdout, stderr, wait_thr| ... } -# - -module Open3 - # - # Open stdin, stdout, and stderr streams and start external executable. - # In addition, a thread for waiting the started process is noticed. - # The thread has a thread variable :pid which is the pid of the started - # process. - # - # Non-block form: - # - # stdin, stdout, stderr, wait_thr = Open3.popen3(cmd) - # pid = wait_thr[:pid] # pid of the started process. - # ... - # stdin.close # stdin, stdout and stderr should be closed in this form. - # stdout.close - # stderr.close - # exit_status = wait_thr.value # Process::Status object returned. - # - # Block form: - # - # Open3.popen3(cmd) { |stdin, stdout, stderr, wait_thr| ... } - # - # The parameter +cmd+ is passed directly to Kernel#spawn. - # - # wait_thr.value waits the termination of the process. - # The block form also waits the process when it returns. - # - # Closing stdin, stdout and stderr does not wait the process. - # - def popen3(*cmd) - pw = IO::pipe # pipe[0] for read, pipe[1] for write - pr = IO::pipe - pe = IO::pipe - - pid = spawn(*cmd, STDIN=>pw[0], STDOUT=>pr[1], STDERR=>pe[1]) - wait_thr = Process.detach(pid) - pw[0].close - pr[1].close - pe[1].close - pi = [pw[1], pr[0], pe[0], wait_thr] - pw[1].sync = true - if defined? yield - begin - return yield(*pi) - ensure - [pw[1], pr[0], pe[0]].each{|p| p.close unless p.closed?} - wait_thr.join - end - end - pi - end - module_function :popen3 -end - -if $0 == __FILE__ - a = Open3.popen3("nroff -man") - Thread.start do - while line = gets - a[0].print line - end - a[0].close - end - while line = a[1].gets - print ":", line - end -end |