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* lib/open3.rb (Open3.pipeline_start): return an array of threads if a

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block is not given.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20618 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2008-12-10 17:24:42 +00:00
parent b314ab3e44
commit 3266ec1658
3 changed files with 112 additions and 20 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Thu Dec 11 02:23:51 2008 Tanaka Akira <akr@fsij.org>
* lib/open3.rb (Open3.pipeline_start): return an array of threads if a
block is not given.
Thu Dec 11 01:48:00 2008 Yukihiro Matsumoto <matz@ruby-lang.org>
* ext/bigdecimal/bigdecimal.c (BigDecimal_round): should be round

92
lib/open3.rb
View file

@ -11,6 +11,8 @@
#
# Open3 grants you access to stdin, stdout, stderr and a thread to wait the
# child process when running another program.
# You can specify various attributes, redirections, current directory, etc., of
# the program as Process.spawn.
#
# - Open3.popen3 : pipes for stdin, stdout, stderr
# - Open3.popen2 : pipes for stdin, stdout
@ -50,14 +52,14 @@ module Open3
# stderr.close
# exit_status = wait_thr.value # Process::Status object returned.
#
# The parameters +cmd...+ is passed to Kernel#spawn.
# The parameters +cmd...+ is passed to Process.spawn.
# So a commandline string and list of argument strings can be accepted as follows.
#
# Open3.popen3("echo a") {|i, o, e, t| ... }
# Open3.popen3("echo", "a") {|i, o, e, t| ... }
# Open3.popen3(["echo", "argv0"], "a") {|i, o, e, t| ... }
#
# If the last parameter, opts, is a Hash, it is recognized as an option for Kernel#spawn.
# If the last parameter, opts, is a Hash, it is recognized as an option for Process.spawn.
#
# Open3.popen3("pwd", :chdir=>"/") {|i,o,e,t|
# p o.read.chomp #=> "/"
@ -107,6 +109,8 @@ module Open3
# stdin.close # stdin and stdout should be closed explicitly in this form.
# stdout.close
#
# See Process.spawn for the optional hash arguments _env_ and _opts_.
#
# Example:
#
# Open3.popen2("wc -c") {|i,o,t|
@ -163,6 +167,8 @@ module Open3
# stdin.close # stdin and stdout_and_stderr should be closed explicitly in this form.
# stdout_and_stderr.close
#
# See Process.spawn for the optional hash arguments _env_ and _opts_.
#
# Example:
# # check gcc warnings
# source = "foo.c"
@ -216,7 +222,8 @@ module Open3
#
# stdout_str, stderr_str, status = Open3.capture3([env,] cmd... [, opts])
#
# The arguments cmd and opts are passed to Open3.popen3 except opts[:stdin_data].
# The arguments env, cmd and opts are passed to Open3.popen3 except
# opts[:stdin_data] and opts[:stdin_data]. See Process.spawn.
#
# If opts[:stdin_data] is specified, it is sent to the command's standard input.
#
@ -279,7 +286,8 @@ module Open3
#
# stdout_str, status = Open3.capture2([env,] cmd... [, opts])
#
# The arguments cmd and opts are passed to Open3.popen2 except opts[:stdin_data].
# The arguments env, cmd and opts are passed to Open3.popen3 except
# opts[:stdin_data] and opts[:stdin_data]. See Process.spawn.
#
# If opts[:stdin_data] is specified, it is sent to the command's standard input.
#
@ -330,7 +338,8 @@ module Open3
#
# stdout_and_stderr_str, status = Open3.capture2e([env,] cmd... [, opts])
#
# The arguments cmd and opts are passed to Open3.popen2e except opts[:stdin_data].
# The arguments env, cmd and opts are passed to Open3.popen3 except
# opts[:stdin_data] and opts[:stdin_data]. See Process.spawn.
#
# If opts[:stdin_data] is specified, it is sent to the command's standard input.
#
@ -377,9 +386,17 @@ module Open3
# last_stdout.close
#
# Each cmd is a string or an array.
# If it is an array, the elements are passed to Kernel#spawn.
# If it is an array, the elements are passed to Process.spawn.
#
# The option to pass Kernel#spawn is constructed by merging
# cmd:
# commandline command line string which is passed to a shell
# [env, commandline, opts] command line string which is passed to a shell
# [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell)
# [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell)
#
# Note that env and opts are optional, as Process.spawn.
#
# The option to pass Process.spawn is constructed by merging
# +opts+, the last hash element of the array and
# specification for the pipe between each commands.
#
@ -427,6 +444,17 @@ module Open3
# ...
# last_stdout.close
#
# Each cmd is a string or an array.
# If it is an array, the elements are passed to Process.spawn.
#
# cmd:
# commandline command line string which is passed to a shell
# [env, commandline, opts] command line string which is passed to a shell
# [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell)
# [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell)
#
# Note that env and opts are optional, as Process.spawn.
#
# Example:
#
# Open3.pipeline_r("zcat /var/log/apache2/access.log.*.gz",
@ -468,6 +496,17 @@ module Open3
# ...
# first_stdin.close
#
# Each cmd is a string or an array.
# If it is an array, the elements are passed to Process.spawn.
#
# cmd:
# commandline command line string which is passed to a shell
# [env, commandline, opts] command line string which is passed to a shell
# [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell)
# [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell)
#
# Note that env and opts are optional, as Process.spawn.
#
# Example:
#
# Open3.pipeline_w("bzip2 -c", :out=>"/tmp/hello.bz2") {|w, ts|
@ -500,6 +539,17 @@ module Open3
# wait_threads = Open3.pipeline_start(cmd1, cmd2, ... [, opts])
# ...
#
# Each cmd is a string or an array.
# If it is an array, the elements are passed to Process.spawn.
#
# cmd:
# commandline command line string which is passed to a shell
# [env, commandline, opts] command line string which is passed to a shell
# [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell)
# [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell)
#
# Note that env and opts are optional, as Process.spawn.
#
# Example:
#
# # run xeyes in 10 seconds.
@ -510,6 +560,18 @@ module Open3
# p t.value #=> #<Process::Status: pid 911 SIGTERM (signal 15)>
# }
#
# # convert pdf to ps and send it to a printer.
# # collect error message of pdftops and lpr.
# pdf_file = "paper.pdf"
# printer = "printer-name"
# err_r, err_w = IO.pipe
# Open3.pipeline_start(["pdftops", pdf_file, "-"],
# ["lpr", "-P#{printer}"],
# :err=>err_w) {|ts|
# err_w.close
# p err_r.read # error messages of pdftops and lpr.
# }
#
def pipeline_start(*cmds, &block)
if Hash === cmds.last
opts = cmds.pop.dup
@ -517,7 +579,12 @@ module Open3
opts = {}
end
if block
pipeline_run(cmds, opts, [], [], &block)
else
ts, = pipeline_run(cmds, opts, [], [])
ts
end
end
module_function :pipeline_start
@ -528,6 +595,17 @@ module Open3
#
# status_list = Open3.pipeline(cmd1, cmd2, ... [, opts])
#
# Each cmd is a string or an array.
# If it is an array, the elements are passed to Process.spawn.
#
# cmd:
# commandline command line string which is passed to a shell
# [env, commandline, opts] command line string which is passed to a shell
# [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell)
# [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell)
#
# Note that env and opts are optional, as Process.spawn.
#
# Example:
#
# fname = "/usr/share/man/man1/ruby.1.gz"

9
test/test_open3.rb
View file

@ -214,6 +214,15 @@ class TestOpen3 < Test::Unit::TestCase
}
end
def test_pipeline_start_noblock
ts = Open3.pipeline_start([RUBY, '-e', ''])
assert_kind_of(Array, ts)
assert_equal(1, ts.length)
ts.each {|t| assert_kind_of(Thread, t) }
t = ts[0]
assert(t.value.success?)
end
def test_pipeline
command = [RUBY, '-e', 's=STDIN.read; print s[1..-1]; exit s[0] == ?t']
str = 'ttftff'