diff -r 000000000000 -r de9c2efb9d02 DebugClients/Ruby/AsyncIO.rb
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/DebugClients/Ruby/AsyncIO.rb Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,97 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2005 - 2009 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+=begin edoc
+File implementing an asynchronous interface for the debugger.
+=end
+
+if RUBY_VERSION < "1.9"
+ $KCODE = 'UTF8'
+ require 'jcode'
+end
+
+module AsyncIO
+=begin edoc
+Module implementing asynchronous reading and writing.
+=end
+ def initializeAsyncIO
+=begin edoc
+Function to initialize the module.
+=end
+ disconnect()
+ end
+
+ def disconnect
+=begin edoc
+Function to disconnect any current connection.
+=end
+ @readfd = nil
+ @writefd = nil
+ end
+
+ def setDescriptors(rfd, wfd)
+=begin edoc
+Function called to set the descriptors for the connection.
+
+@param fd file descriptor of the input file (int)
+@param wfd file descriptor of the output file (int)
+=end
+ @rbuf = ''
+ @readfd = rfd
+
+ @wbuf = ''
+ @writefd = wfd
+ end
+
+ def readReady(fd)
+=begin edoc
+Function called when there is data ready to be read.
+
+@param fd file descriptor of the file that has data to be read (int)
+=end
+ begin
+ got = @readfd.readline()
+ rescue
+ return
+ end
+
+ if got.length == 0
+ sessionClose()
+ return
+ end
+
+ @rbuf << got
+
+ # Call handleLine for the line if it is complete.
+ eol = @rbuf.index("\n")
+
+ while eol and eol >= 0
+ s = @rbuf[0..eol]
+ @rbuf = @rbuf[eol+1..-1]
+ handleLine(s)
+ eol = @rbuf.index("\n")
+ end
+ end
+
+ def writeReady(fd)
+=begin edoc
+Function called when we are ready to write data.
+
+@param fd file descriptor of the file that has data to be written (int)
+=end
+ @writefd.write(@wbuf)
+ @writefd.flush()
+ @wbuf = ''
+ end
+
+ def write(s)
+=begin edoc
+Function to write a string.
+
+@param s the data to be written (string)
+=end
+ @wbuf << s
+ end
+end
