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Diffstat (limited to 'lib/python2.7/cgitb.py')
| -rw-r--r-- | lib/python2.7/cgitb.py | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/lib/python2.7/cgitb.py b/lib/python2.7/cgitb.py deleted file mode 100644 index 8acc4b7..0000000 --- a/lib/python2.7/cgitb.py +++ /dev/null @@ -1,323 +0,0 @@ -"""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. - -""" -import inspect -import keyword -import linecache -import os -import pydoc -import sys -import tempfile -import time -import tokenize -import traceback -import types - -def reset(): - """Return a string that resets the CGI and browser to a known state.""" - return '''<!--: spam -Content-Type: text/html - -<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> --> -<body bgcolor="#f0f0f8"><font color="#f0f0f8" size="-5"> --> --> -</font> </font> </font> </script> </object> </blockquote> </pre> -</table> </table> </table> </table> </table> </font> </font> </font>''' - -__UNDEF__ = [] # a special sentinel object -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] - else: - if 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.""" - 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(einfo, context=5): - """Return a nice HTML document describing a given traceback.""" - etype, evalue, etb = einfo - 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) + ''' -<p>A problem occurred in a Python script. Here is the sequence of -function 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 file: - file = os.path.abspath(file) - link = '<a href="file://%s">%s</a>' % (file, pydoc.html.escape(file)) - else: - file = link = '?' - 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)) + ' ' - if i in highlight: - line = '<tt>=>%s%s</tt>' % (num, pydoc.html.preformat(line)) - rows.append('<tr><td bgcolor="#ffccee">%s</td></tr>' % line) - else: - line = '<tt> %s%s</tt>' % (num, pydoc.html.preformat(line)) - 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))) - else: - dump.append(name + ' <em>undefined</em>') - - rows.append('<tr><td>%s</td></tr>' % small(grey(', '.join(dump)))) - frames.append(''' -<table width="100%%" cellspacing=0 cellpadding=0 border=0> -%s</table>''' % '\n'.join(rows)) - - exception = ['<p>%s: %s' % (strong(pydoc.html.escape(str(etype))), - pydoc.html.escape(str(evalue)))] - if isinstance(evalue, BaseException): - 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)) - - return head + ''.join(frames) + ''.join(exception) + ''' - - -<!-- The above is a description of an error in a Python program, formatted - for a Web browser because the 'cgitb' module was enabled. In case you - are not reading this in a Web browser, here is the original traceback: - -%s ---> -''' % pydoc.html.escape( - ''.join(traceback.format_exception(etype, evalue, etb))) - -def text(einfo, context=5): - """Return a plain text document describing a given traceback.""" - etype, evalue, etb = einfo - 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) + ''' -A problem occurred in a Python script. Here is the sequence of -function calls leading up to the error, in the order they occurred. -''' - - frames = [] - records = inspect.getinnerframes(etb, context) - for frame, file, lnum, func, lines, index in records: - file = file and os.path.abspath(file) or '?' - 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))) - else: - 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 isinstance(evalue, BaseException): - for name in dir(evalue): - value = pydoc.text.repr(getattr(evalue, name)) - exception.append('\n%s%s = %s' % (" "*4, name, value)) - - return head + ''.join(frames) + ''.join(exception) + ''' - -The above is a description of an error in a Python program. Here is -the original traceback: - -%s -''' % ''.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 # send tracebacks to browser if true - self.logdir = logdir # log tracebacks to files if not None - self.context = context # number of source code lines per frame - self.file = file or sys.stdout # place to send the output - self.format = format - - def __call__(self, etype, evalue, etb): - self.handle((etype, evalue, etb)) - - def handle(self, info=None): - info = info or sys.exc_info() - if self.format == "html": - self.file.write(reset()) - - formatter = (self.format=="html") and html or text - plain = False - try: - doc = formatter(info, self.context) - except: # just in case something goes wrong - 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: - 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 = '%s contains the description of this error.' % path - except: - msg = 'Tried to save traceback to %s, but failed.' % path - - if self.format == 'html': - self.file.write('<p>%s</p>\n' % msg) - else: - 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) |