+import os
+import sys
+from code import InteractiveInterpreter
+import dispatcher
+import introspect
+
+
+class Interpreter(InteractiveInterpreter):
+ """Interpreter based on code.InteractiveInterpreter."""
+
+ revision = __revision__
+
+ def __init__(self, locals=None, rawin=None,
+ stdin=sys.stdin, stdout=sys.stdout, stderr=sys.stderr):
+ """Create an interactive interpreter object."""
+ InteractiveInterpreter.__init__(self, locals=locals)
+ self.stdin = stdin
+ self.stdout = stdout
+ self.stderr = stderr
+ if rawin:
+ import __builtin__
+ __builtin__.raw_input = rawin
+ del __builtin__
+ copyright = 'Type "help", "copyright", "credits" or "license"'
+ copyright += ' for more information.'
+ self.introText = 'Python %s on %s%s%s' % \
+ (sys.version, sys.platform, os.linesep, copyright)
+ try:
+ sys.ps1
+ except AttributeError:
+ sys.ps1 = '>>> '
+ try:
+ sys.ps2
+ except AttributeError:
+ sys.ps2 = '... '
+ self.more = 0
+ # List of lists to support recursive push().
+ self.commandBuffer = []
+ self.startupScript = os.environ.get('PYTHONSTARTUP')
+
+ def push(self, command):
+ """Send command to the interpreter to be executed.
+
+ Because this may be called recursively, we append a new list
+ onto the commandBuffer list and then append commands into
+ that. If the passed in command is part of a multi-line
+ command we keep appending the pieces to the last list in
+ commandBuffer until we have a complete command. If not, we
+ delete that last list."""
+ command = str(command) # In case the command is unicode.
+ if not self.more:
+ try: del self.commandBuffer[-1]
+ except IndexError: pass
+ if not self.more: self.commandBuffer.append([])
+ self.commandBuffer[-1].append(command)
+ source = '\n'.join(self.commandBuffer[-1])
+ more = self.more = self.runsource(source)
+ dispatcher.send(signal='Interpreter.push', sender=self,
+ command=command, more=more, source=source)
+ return more
+
+ def runsource(self, source):
+ """Compile and run source code in the interpreter."""
+ stdin, stdout, stderr = sys.stdin, sys.stdout, sys.stderr
+ sys.stdin, sys.stdout, sys.stderr = \
+ self.stdin, self.stdout, self.stderr
+ more = InteractiveInterpreter.runsource(self, source)
+ # If sys.std* is still what we set it to, then restore it.
+ # But, if the executed source changed sys.std*, assume it was
+ # meant to be changed and leave it. Power to the people.
+ if sys.stdin == self.stdin:
+ sys.stdin = stdin
+ if sys.stdout == self.stdout:
+ sys.stdout = stdout
+ if sys.stderr == self.stderr:
+ sys.stderr = stderr
+ return more
+
+ def getAutoCompleteKeys(self):
+ """Return list of auto-completion keycodes."""
+ return [ord('.')]
+
+ def getAutoCompleteList(self, command='', *args, **kwds):
+ """Return list of auto-completion options for a command.
+
+ The list of options will be based on the locals namespace."""
+ stdin, stdout, stderr = sys.stdin, sys.stdout, sys.stderr
+ sys.stdin, sys.stdout, sys.stderr = \
+ self.stdin, self.stdout, self.stderr
+ l = introspect.getAutoCompleteList(command, self.locals,
+ *args, **kwds)
+ sys.stdin, sys.stdout, sys.stderr = stdin, stdout, stderr
+ return l
+
+ def getCallTip(self, command='', *args, **kwds):
+ """Return call tip text for a command.
+
+ Call tip information will be based on the locals namespace."""
+ return introspect.getCallTip(command, self.locals, *args, **kwds)
+
+
+class InterpreterAlaCarte(Interpreter):
+ """Demo Interpreter."""
+
+ def __init__(self, locals, rawin, stdin, stdout, stderr,
+ ps1='main prompt', ps2='continuation prompt'):
+ """Create an interactive interpreter object."""
+ Interpreter.__init__(self, locals=locals, rawin=rawin,
+ stdin=stdin, stdout=stdout, stderr=stderr)
+ sys.ps1 = ps1
+ sys.ps2 = ps2
+
+