--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Mac/Tools/IDE/PyInteractive.py	Sat Jan 30 22:39:17 1999 +0000
@@ -0,0 +1,115 @@
+import string
+import sys
+import traceback
+
+
+try:
+	sys.ps1
+except AttributeError:
+	sys.ps1 = ">>> "
+try:
+	sys.ps2
+except AttributeError:
+	sys.ps2 = "... "
+
+
+def print_exc(limit=None, file=None):
+	if not file:
+		file = sys.stderr
+	# we're going to skip the outermost traceback object, we don't
+	# want people to see the line which excecuted their code.
+	tb = sys.exc_traceback
+	if tb:
+		tb = tb.tb_next
+	try:
+		sys.last_type = sys.exc_type
+		sys.last_value = sys.exc_value
+		sys.last_traceback = tb
+		traceback.print_exception(sys.last_type, sys.last_value, 
+					sys.last_traceback, limit, file)
+	except:
+		print '--- hola! ---'
+		traceback.print_exception(sys.exc_type, sys.exc_value, 
+					sys.exc_traceback, limit, file)
+
+
+class PyInteractive:
+	
+	def __init__(self):
+		self._pybuf = ""
+	
+	def executeline(self, stuff, out = None, env = None):
+		if env is None:
+			import __main__
+			env = __main__.__dict__
+		if out:
+			saveerr, saveout = sys.stderr, sys.stdout
+			sys.stderr = sys.stdout = out
+		try:
+			if self._pybuf:
+				self._pybuf = self._pybuf + '\n' + stuff
+			else:
+				self._pybuf = stuff
+			
+			# Compile three times: as is, with \n, and with \n\n appended.
+			# If it compiles as is, it's complete.  If it compiles with
+			# one \n appended, we expect more.  If it doesn't compile
+			# either way, we compare the error we get when compiling with
+			# \n or \n\n appended.  If the errors are the same, the code
+			# is broken.  But if the errors are different, we expect more.
+			# Not intuitive; not even guaranteed to hold in future
+			# releases; but this matches the compiler's behavior in Python
+			# 1.4 and 1.5.
+			err = err1 = err2 = None
+			code = code1 = code2 = None
+			
+			# quickly get out of here when the line is 'empty' or is a comment
+			stripped = string.strip(self._pybuf)
+			if not stripped or stripped[0] == '#':
+				self._pybuf = ''
+				sys.stdout.write(sys.ps1)
+				sys.stdout.flush()
+				return
+			
+			try:
+				code = compile(self._pybuf, "<input>", "single")
+			except SyntaxError, err:
+				pass
+			except:
+				# OverflowError. More?
+				print_exc()
+				self._pybuf = ""
+				sys.stdout.write(sys.ps1)
+				sys.stdout.flush()
+				return
+			
+			try:
+				code1 = compile(self._pybuf + "\n", "<input>", "single")
+			except SyntaxError, err1:
+				pass
+			
+			try:
+				code2 = compile(self._pybuf + "\n\n", "<input>", "single")
+			except SyntaxError, err2:
+				pass
+			
+			if code:
+				try:
+					exec code in env
+				except:
+					print_exc()
+				self._pybuf = ""
+			elif code1:
+				pass
+			elif err1 == err2 or (not stuff and self._pybuf):
+				print_exc()
+				self._pybuf = ""
+			if self._pybuf:
+				sys.stdout.write(sys.ps2)
+				sys.stdout.flush()
+			else:
+				sys.stdout.write(sys.ps1)
+				sys.stdout.flush()
+		finally:
+			if out:
+				sys.stderr, sys.stdout = saveerr, saveout