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# Source Generated with Decompyle++ # File: in.pyc (Python 2.4) """More comprehensive traceback formatting for Python scripts. To enable this module, do: import cgitb; cgitb.enable() at the top of your script. The optional arguments to enable() are: display - if true, tracebacks are displayed in the web browser logdir - if set, tracebacks are written to files in this directory context - number of lines of source code to show for each stack frame format - 'text' or 'html' controls the output format By default, tracebacks are displayed but not saved, the context is 5 lines and the output format is 'html' (for backwards compatibility with the original use of this module) Alternatively, if you have caught an exception and want cgitb to display it for you, call cgitb.handler(). The optional argument to handler() is a 3-item tuple (etype, evalue, etb) just like the value of sys.exc_info(). The default handler displays output as HTML. """ __author__ = 'Ka-Ping Yee' __version__ = '$Revision: 1.15 $' import sys def reset(): '''Return a string that resets the CGI and browser to a known state.''' return '<!--: spam\nContent-Type: text/html\n\n<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> -->\n<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> --> -->\n</font> </font> </font> </script> </object> </blockquote> </pre>\n</table> </table> </table> </table> </table> </font> </font> </font>' __UNDEF__ = [] def small(text): if text: return '<small>' + text + '</small>' else: return '' def strong(text): if text: return '<strong>' + text + '</strong>' else: return '' def grey(text): if text: return '<font color="#909090">' + text + '</font>' else: return '' def lookup(name, frame, locals): '''Find the value for a given name in the given environment.''' if name in locals: return ('local', locals[name]) if name in frame.f_globals: return ('global', frame.f_globals[name]) if '__builtins__' in frame.f_globals: builtins = frame.f_globals['__builtins__'] if type(builtins) is type({ }): if name in builtins: return ('builtin', builtins[name]) elif hasattr(builtins, name): return ('builtin', getattr(builtins, name)) return (None, __UNDEF__) def scanvars(reader, frame, locals): '''Scan one logical line of Python and look up values of variables used.''' import tokenize import keyword (vars, lasttoken, parent, prefix, value) = ([], None, None, '', __UNDEF__) for ttype, token, start, end, line in tokenize.generate_tokens(reader): if ttype == tokenize.NEWLINE: break if ttype == tokenize.NAME and token not in keyword.kwlist: if lasttoken == '.': if parent is not __UNDEF__: value = getattr(parent, token, __UNDEF__) vars.append((prefix + token, prefix, value)) else: (where, value) = lookup(token, frame, locals) vars.append((token, where, value)) elif token == '.': prefix += lasttoken + '.' parent = value else: (parent, prefix) = (None, '') lasttoken = token return vars def html(.0, context = 5): '''Return a nice HTML document describing a given traceback.''' (etype, evalue, etb) = .0 import os import types import time import traceback import linecache import inspect import pydoc if type(etype) is types.ClassType: etype = etype.__name__ pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable date = time.ctime(time.time()) head = '<body bgcolor="#f0f0f8">' + pydoc.html.heading('<big><big>%s</big></big>' % strong(pydoc.html.escape(str(etype))), '#ffffff', '#6622aa', pyver + '<br>' + date) + '\n<p>A problem occurred in a Python script. Here is the sequence of\nfunction calls leading up to the error, in the order they occurred.</p>' indent = '<tt>' + small(' ' * 5) + ' </tt>' frames = [] records = inspect.getinnerframes(etb, context) for frame, file, lnum, func, lines, index in records: if not file or os.path.abspath(file): pass file = '?' link = '<a href="file://%s">%s</a>' % (file, pydoc.html.escape(file)) (args, varargs, varkw, locals) = inspect.getargvalues(frame) call = '' if func != '?': call = 'in ' + strong(func) + inspect.formatargvalues(args, varargs, varkw, locals, formatvalue = (lambda value: '=' + pydoc.html.repr(value))) highlight = { } def reader(lnum = [ lnum]): highlight[lnum[0]] = 1 try: return linecache.getline(file, lnum[0]) finally: lnum[0] += 1 vars = scanvars(reader, frame, locals) rows = [ '<tr><td bgcolor="#d8bbff">%s%s %s</td></tr>' % ('<big> </big>', link, call)] if index is not None: i = lnum - index for line in lines: num = small(' ' * (5 - len(str(i))) + str(i)) + ' ' line = '<tt>%s%s</tt>' % (num, pydoc.html.preformat(line)) if i in highlight: rows.append('<tr><td bgcolor="#ffccee">%s</td></tr>' % line) else: rows.append('<tr><td>%s</td></tr>' % grey(line)) i += 1 done = { } dump = [] for name, where, value in vars: if name in done: continue done[name] = 1 if value is not __UNDEF__: if where in [ 'global', 'builtin']: name = '<em>%s</em> ' % where + strong(name) elif where == 'local': name = strong(name) else: name = where + strong(name.split('.')[-1]) dump.append('%s = %s' % (name, pydoc.html.repr(value))) continue dump.append(name + ' <em>undefined</em>') rows.append('<tr><td>%s</td></tr>' % small(grey(', '.join(dump)))) frames.append('\n<table width="100%%" cellspacing=0 cellpadding=0 border=0>\n%s</table>' % '\n'.join(rows)) exception = [ '<p>%s: %s' % (strong(pydoc.html.escape(str(etype))), pydoc.html.escape(str(evalue)))] if type(evalue) is types.InstanceType: for name in dir(evalue): if name[:1] == '_': continue value = pydoc.html.repr(getattr(evalue, name)) exception.append('\n<br>%s%s =\n%s' % (indent, name, value)) import traceback return head + ''.join(frames) + ''.join(exception) + "\n\n\n<!-- The above is a description of an error in a Python program, formatted\n for a Web browser because the 'cgitb' module was enabled. In case you\n are not reading this in a Web browser, here is the original traceback:\n\n%s\n-->\n" % ''.join(traceback.format_exception(etype, evalue, etb)) def text(.0, context = 5): '''Return a plain text document describing a given traceback.''' (etype, evalue, etb) = .0 import os import types import time import traceback import linecache import inspect import pydoc if type(etype) is types.ClassType: etype = etype.__name__ pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable date = time.ctime(time.time()) head = '%s\n%s\n%s\n' % (str(etype), pyver, date) + '\nA problem occurred in a Python script. Here is the sequence of\nfunction calls leading up to the error, in the order they occurred.\n' frames = [] records = inspect.getinnerframes(etb, context) for frame, file, lnum, func, lines, index in records: if not file or os.path.abspath(file): pass file = '?' (args, varargs, varkw, locals) = inspect.getargvalues(frame) call = '' if func != '?': call = 'in ' + func + inspect.formatargvalues(args, varargs, varkw, locals, formatvalue = (lambda value: '=' + pydoc.text.repr(value))) highlight = { } def reader(lnum = [ lnum]): highlight[lnum[0]] = 1 try: return linecache.getline(file, lnum[0]) finally: lnum[0] += 1 vars = scanvars(reader, frame, locals) rows = [ ' %s %s' % (file, call)] if index is not None: i = lnum - index for line in lines: num = '%5d ' % i rows.append(num + line.rstrip()) i += 1 done = { } dump = [] for name, where, value in vars: if name in done: continue done[name] = 1 if value is not __UNDEF__: if where == 'global': name = 'global ' + name elif where != 'local': name = where + name.split('.')[-1] dump.append('%s = %s' % (name, pydoc.text.repr(value))) continue dump.append(name + ' undefined') rows.append('\n'.join(dump)) frames.append('\n%s\n' % '\n'.join(rows)) exception = [ '%s: %s' % (str(etype), str(evalue))] if type(evalue) is types.InstanceType: for name in dir(evalue): value = pydoc.text.repr(getattr(evalue, name)) exception.append('\n%s%s = %s' % (' ' * 4, name, value)) import traceback return head + ''.join(frames) + ''.join(exception) + '\n\nThe above is a description of an error in a Python program. Here is\nthe original traceback:\n\n%s\n' % ''.join(traceback.format_exception(etype, evalue, etb)) class Hook: '''A hook to replace sys.excepthook that shows tracebacks in HTML.''' def __init__(self, display = 1, logdir = None, context = 5, file = None, format = 'html'): self.display = display self.logdir = logdir self.context = context if not file: pass self.file = sys.stdout self.format = format def __call__(self, etype, evalue, etb): self.handle((etype, evalue, etb)) def handle(self, info = None): if not info: pass info = sys.exc_info() if self.format == 'html': self.file.write(reset()) if not self.format == 'html' or html: pass formatter = text plain = False try: doc = formatter(info, self.context) except: import traceback doc = ''.join(traceback.format_exception(*info)) plain = True if self.display: if plain: doc = doc.replace('&', '&').replace('<', '<') self.file.write('<pre>' + doc + '</pre>\n') else: self.file.write(doc + '\n') else: self.file.write('<p>A problem occurred in a Python script.\n') if self.logdir is not None: import os import tempfile suffix = [ '.txt', '.html'][self.format == 'html'] (fd, path) = tempfile.mkstemp(suffix = suffix, dir = self.logdir) try: file = os.fdopen(fd, 'w') file.write(doc) file.close() msg = '<p> %s contains the description of this error.' % path except: msg = '<p> Tried to save traceback to %s, but failed.' % path self.file.write(msg + '\n') try: self.file.flush() except: pass handler = Hook().handle def enable(display = 1, logdir = None, context = 5, format = 'html'): """Install an exception handler that formats tracebacks as HTML. The optional argument 'display' can be set to 0 to suppress sending the traceback to the browser, and 'logdir' can be set to a directory to cause tracebacks to be written to files there.""" sys.excepthook = Hook(display = display, logdir = logdir, context = context, format = format)