Module to buffer stdout/stderr until stdin is read. Useful for
windowing programs, together with option to keep console window closed
until needed.
diff --git a/Mac/Lib/quietconsole.py b/Mac/Lib/quietconsole.py
new file mode 100644
index 0000000..21e7755
--- /dev/null
+++ b/Mac/Lib/quietconsole.py
@@ -0,0 +1,110 @@
+"""quietconsole - A module to keep console I/O quiet but dump it when needed"""
+import types
+import sys
+
+class _PseudoStdin:
+ def __init__(self, stdouterr):
+ self.keep_stdin = sys.stdin
+ sys.stdin = self
+ self.keep_stdouterr = stdouterr
+
+ def __del__(self):
+ self.keep_stdin = self.keep_stdouterr = None
+
+ def _revert(self):
+ """Return to old state, with true stdio"""
+ if self.keep_stdin == None:
+ return
+ sys.stdin = self.keep_stdin
+ self.keep_stdin = None
+ self.keep_stdouterr._revert(1)
+ self.keep_stdouterr = None
+
+ def read(self, *args):
+ self._revert()
+ return apply(sys.stdin.read, args)
+
+ def readlines(self, *args):
+ self._revert()
+ return apply(sys.stdin.readlines, args)
+
+ def readline(self, *args):
+ self._revert()
+ return apply(sys.stdin.readline, args)
+
+ def close(self):
+ self._revert()
+ sys.stdin.close()
+
+class _PseudoStdouterr:
+ def __init__(self):
+ self.keep_stdout = sys.stdout
+ self.keep_stderr = sys.stderr
+ sys.stdout = sys.stderr = self
+ self.data = []
+
+ def __del__(self):
+ self.keep_stdout = self.keep_stderr = None
+
+ def _revert(self, dumpdata=0):
+ if self.keep_stdout == None:
+ return
+ sys.stdout = self.keep_stdout
+ sys.stderr = self.keep_stderr
+ sys.keep_stdout = self.keep_stderr = None
+ if dumpdata and self.data:
+ for d in self.data:
+ sys.stdout.write(d)
+ self.data = None
+
+ def write(self, arg):
+ self.data.append(arg)
+
+ def writelines(self, arg):
+ for d in arg:
+ self.data.append(arg)
+
+ def close(self):
+ self.keep_stdout = self.keep_stderr = self.data = None
+
+beenhere = 0
+
+def install():
+ global beenhere
+ if beenhere:
+ return
+ beenhere = 1
+ # There's no point in re-installing if the console has been active
+ obj = _PseudoStdouterr()
+ _PseudoStdin(obj)
+ # No need to keep the objects, they're saved in sys.std{in,out,err}
+
+def revert():
+ if type(sys.stdin) == types.FileType:
+ return # Not installed
+ sys.stdin._revert()
+
+def _test():
+ import time
+ install()
+ print "You will not see this yet"
+ time.sleep(1)
+ print "You will not see this yet"
+ time.sleep(1)
+ print "You will not see this yet"
+ time.sleep(1)
+ print "You will not see this yet"
+ time.sleep(1)
+ print "You will not see this yet"
+ time.sleep(1)
+ print "5 seconds have passed, now you may type something"
+ rv = sys.stdin.readline()
+ print "You typed", rv
+
+if __name__ == '__main__':
+ _test()
+
+
+
+
+