From 3e09ac0c10c95bb24a08af62393b4f761e2743d0 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Sat, 24 Aug 2013 09:54:45 +0000
Subject: initial commit

---
 lib/dtas/command.rb | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 lib/dtas/command.rb

(limited to 'lib/dtas/command.rb')

diff --git a/lib/dtas/command.rb b/lib/dtas/command.rb
new file mode 100644
index 0000000..b957567
--- /dev/null
+++ b/lib/dtas/command.rb
@@ -0,0 +1,44 @@
+# -*- encoding: binary -*-
+# :stopdoc:
+# Copyright (C) 2013, Eric Wong <normalperson@yhbt.net>
+# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+# common code for wrapping SoX/ecasound/... commands
+require_relative 'serialize'
+require 'shellwords'
+
+module DTAS::Command
+  include DTAS::Serialize
+  attr_reader :pid
+  attr_reader :to_io
+  attr_accessor :command
+  attr_accessor :env
+  attr_accessor :spawn_at
+
+  COMMAND_DEFAULTS = {
+    "env" => {},
+    "command" => nil,
+  }
+
+  def command_init(defaults = {})
+    @pid = nil
+    @to_io = nil
+    @spawn_at = nil
+    COMMAND_DEFAULTS.merge(defaults).each do |k,v|
+      v = v.dup if Hash === v || Array === v
+      instance_variable_set("@#{k}", v)
+    end
+  end
+
+  def kill(sig = :TERM)
+    # always kill the pgroup since we run subcommands in their own shell
+    Process.kill(sig, -@pid)
+  end
+
+  def on_death(status)
+    @pid = nil
+  end
+
+  def command_string
+    @command
+  end
+end
-- 
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