123 lines
3.6 KiB
Python
Executable File
123 lines
3.6 KiB
Python
Executable File
#!/usr/bin/env python
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import code
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import optparse
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import os
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import sys
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import StringIO
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import traceback
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class EPython(object):
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def __init__(self, globals_, locals_):
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self.lines = []
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self.globals = globals_
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self.locals = locals_
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def reset(self):
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self.lines = []
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def prompt(self):
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if self.lines:
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return "PROMPT:..>"
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else:
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return "PROMPT:>>>"
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def handle(self, line):
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if line.startswith('ENTER:'):
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self.push(line[6:-1])
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elif line.startswith('COMPLETE:'):
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self.complete(line[9:-1])
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else:
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print "ERROR:invalid input"
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def complete(self, s):
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candidates = []
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names = s.split('.')
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obj = None
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i = 0
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name = names[0]
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if len(names) > 1:
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while i < len(names):
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name = names[i]
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if obj is None:
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if name in self.locals:
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obj = self.locals[name]
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elif name in self.globals:
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obj = self.globals[name]
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else:
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break
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else:
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if hasattr(obj, name):
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obj = getattr(obj, name)
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else:
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break
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i += 1
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if i == len(names) - 1:
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base = '.'.join(names[:-1])
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if base:
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base += '.'
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if obj is not None:
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newnames = dir(obj)
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else:
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newnames = set()
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newnames.update(dir(__builtins__))
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newnames.update(self.locals)
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newnames.update(self.globals)
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candidates = [base + x for x in newnames if x.startswith(name)]
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print "COMPLETIONS:%s" % ('|'.join(candidates))
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def push(self, s):
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self.lines.append(s)
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s2 = '\n'.join(self.lines)
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try:
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code_obj = code.compile_command(s2)
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if code_obj is None:
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return
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try:
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exec code_obj in self.globals, self.locals
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except Exception, e:
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print str(e) + "\n" + traceback.format_exc()
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except (SyntaxError, OverflowError, ValueError), e:
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print str(e) + "\n" + traceback.format_exc()
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self.reset()
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def main(self):
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while True:
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print '\n' + self.prompt()
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sys.stdout.flush()
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line = sys.stdin.readline()
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if not line:
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break
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self.handle(line)
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if __name__ == "__main__":
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stanzas = []
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def add_eval(option, opt, value, parser):
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stanzas.append(('eval', value))
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def add_path(option, opt, value, parser):
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stanzas.append(('path', value))
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parser = optparse.OptionParser()
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parser.add_option('-e', '--eval', type='string', action='callback', callback=add_eval)
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parser.add_option('-r', '--run', type='string', action='callback', callback=add_path)
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parser.add_option('-p', '--pipe', action='store_true')
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parser.parse_args()
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del parser, add_path, add_eval
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__EP = EPython(globals_=globals(), locals_=locals())
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sys.path.insert(0, os.getcwd())
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for (type_, value) in stanzas:
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#break
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if type_ == 'eval':
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exec value in __EP.globals, __EP.locals
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__EP.push(value)
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elif type_ == 'path':
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f = open(value, 'r')
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exec f in __EP.globals, __EP.locals
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f.close()
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else:
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raise Exception, 'how can this happen?'
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del stanzas
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__EP.reset()
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__EP.main()
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