Mercurial > p > roundup > code
view roundup/cgi/cgitb.py @ 5418:55f09ca366c4
Python 3 preparation: StringIO.
This generally arranges for StringIO and cStringIO references to use
io.StringIO for Python 3 but io.BytesIO for Python 2, consistent with
the string representations generally used in Roundup. A special
FasterStringIO in the TAL code, which referenced internals of the old
Python 2 StringIO module, is cut down so it doesn't actually do
anything beyond the StringIO class it inherits from (it would also be
reasonable to remove FasterStringIO completely). One place in
roundup_server.py clearly needing binary I/O is made to use io.BytesIO
unconditionally.
| author | Joseph Myers <jsm@polyomino.org.uk> |
|---|---|
| date | Wed, 25 Jul 2018 09:08:29 +0000 |
| parents | 64b05e24dbd8 |
| children | 7172c201dec2 |
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# # This module was written by Ka-Ping Yee, <ping@lfw.org>. # """Extended CGI traceback handler by Ka-Ping Yee, <ping@lfw.org>. """ from __future__ import print_function __docformat__ = 'restructuredtext' import sys, os, types, string, keyword, linecache, tokenize, inspect, cgi import pydoc, traceback from roundup.cgi import templating, TranslationService def get_translator(i18n=None): """Return message translation function (gettext) Parameters: i18n - translation service, such as roundup.i18n module or TranslationService object. Return ``gettext`` attribute of the ``i18n`` object, if available (must be a message translation function with one argument). If ``gettext`` cannot be obtained from ``i18n``, take default TranslationService. """ try: return i18n.gettext except: return TranslationService.get_translation().gettext def breaker(): return ('<body bgcolor="white">' + '<font color="white" size="-5"> > </font> ' + '</table>' * 5) def niceDict(indent, dict): l = [] for k in sorted(dict): v = dict[k] l.append('<tr><td><strong>%s</strong></td><td>%s</td></tr>'%(k, cgi.escape(repr(v)))) return '\n'.join(l) def pt_html(context=5, i18n=None): _ = get_translator(i18n) esc = cgi.escape exc_info = [esc(str(value)) for value in sys.exc_info()[:2]] l = [_('<h1>Templating Error</h1>\n' '<p><b>%(exc_type)s</b>: %(exc_value)s</p>\n' '<p class="help">Debugging information follows</p>' ) % {'exc_type': exc_info[0], 'exc_value': exc_info[1]}, '<ol>',] from roundup.cgi.PageTemplates.Expressions import TraversalError t = inspect.trace(context) t.reverse() for frame, file, lnum, func, lines, index in t: args, varargs, varkw, locals = inspect.getargvalues(frame) if '__traceback_info__' in locals: ti = locals['__traceback_info__'] if isinstance(ti, TraversalError): s = [] for name, info in ti.path: s.append(_('<li>"%(name)s" (%(info)s)</li>') % {'name': name, 'info': esc(repr(info))}) s = '\n'.join(s) l.append(_('<li>Looking for "%(name)s", ' 'current path:<ol>%(path)s</ol></li>' ) % {'name': ti.name, 'path': s}) else: l.append(_('<li>In %s</li>') % esc(str(ti))) if '__traceback_supplement__' in locals: ts = locals['__traceback_supplement__'] if len(ts) == 2: supp, context = ts s = _('A problem occurred in your template "%s".') \ % str(context.id) if context._v_errors: s = s + '<br>' + '<br>'.join( [esc(x) for x in context._v_errors]) l.append('<li>%s</li>'%s) elif len(ts) == 3: supp, context, info = ts l.append(_(''' <li>While evaluating the %(info)r expression on line %(line)d <table class="otherinfo" style="font-size: 90%%"> <tr><th colspan="2" class="header">Current variables:</th></tr> %(globals)s %(locals)s </table></li> ''') % { 'info': info, 'line': context.position[0], 'globals': niceDict(' ', context.global_vars), 'locals': niceDict(' ', context.local_vars) }) l.append(''' </ol> <table style="font-size: 80%%; color: gray"> <tr><th class="header" align="left">%s</th></tr> <tr><td><pre>%s</pre></td></tr> </table>''' % (_('Full traceback:'), cgi.escape(''.join( traceback.format_exception(*sys.exc_info()) )))) l.append('<p> </p>') return '\n'.join(l) def html(context=5, i18n=None): _ = get_translator(i18n) etype, evalue = sys.exc_info()[0], sys.exc_info()[1] if type(etype) is type: etype = etype.__name__ pyver = 'Python ' + string.split(sys.version)[0] + '<br>' + sys.executable head = pydoc.html.heading( _('<font size=+1><strong>%(exc_type)s</strong>: %(exc_value)s</font>') % {'exc_type': etype, 'exc_value': evalue}, '#ffffff', '#777777', pyver) head = head + (_('<p>A problem occurred while running a Python script. ' 'Here is the sequence of function calls leading up to ' 'the error, with the most recent (innermost) call first. ' 'The exception attributes are:')) indent = '<tt><small>%s</small> </tt>' % (' ' * 5) traceback = [] for frame, file, lnum, func, lines, index in inspect.trace(context): if file is None: link = _("<file is None - probably inside <tt>eval</tt> " "or <tt>exec</tt>>") else: file = os.path.abspath(file) link = '<a href="file:%s">%s</a>' % (file, pydoc.html.escape(file)) args, varargs, varkw, locals = inspect.getargvalues(frame) if func == '?': call = '' else: call = _('in <strong>%s</strong>') % func + inspect.formatargvalues( args, varargs, varkw, locals, formatvalue=lambda value: '=' + pydoc.html.repr(value)) level = ''' <table width="100%%" bgcolor="#dddddd" cellspacing=0 cellpadding=2 border=0> <tr><td>%s %s</td></tr></table>''' % (link, call) if index is None or file is None: traceback.append('<p>' + level) continue # do a file inspection names = [] def tokeneater(type, token, start, end, line, names=names): if type == tokenize.NAME and token not in keyword.kwlist: if token not in names: names.append(token) if type == tokenize.NEWLINE: raise IndexError def linereader(file=file, lnum=[lnum]): line = linecache.getline(file, lnum[0]) lnum[0] = lnum[0] + 1 return line try: tokenize.tokenize(linereader, tokeneater) except IndexError: pass lvals = [] for name in names: if name in frame.f_code.co_varnames: if name in locals: value = pydoc.html.repr(locals[name]) else: value = _('<em>undefined</em>') name = '<strong>%s</strong>' % name else: if name in frame.f_globals: value = pydoc.html.repr(frame.f_globals[name]) else: value = _('<em>undefined</em>') name = '<em>global</em> <strong>%s</strong>' % name lvals.append('%s = %s'%(name, value)) if lvals: lvals = string.join(lvals, ', ') lvals = indent + '<small><font color="#909090">%s'\ '</font></small><br>'%lvals else: lvals = '' excerpt = [] i = lnum - index for line in lines: number = ' ' * (5-len(str(i))) + str(i) number = '<small><font color="#909090">%s</font></small>' % number line = '<tt>%s %s</tt>' % (number, pydoc.html.preformat(line)) if i == lnum: line = ''' <table width="100%%" bgcolor="white" cellspacing=0 cellpadding=0 border=0> <tr><td>%s</td></tr></table>''' % line excerpt.append('\n' + line) if i == lnum: excerpt.append(lvals) i = i + 1 traceback.append('<p>' + level + string.join(excerpt, '\n')) traceback.reverse() exception = '<p><strong>%s</strong>: %s' % (str(etype), str(evalue)) attribs = [] if type(evalue) is types.InstanceType: for name in dir(evalue): value = pydoc.html.repr(getattr(evalue, name)) attribs.append('<br>%s%s = %s' % (indent, name, value)) return head + string.join(attribs) + string.join(traceback) + '<p> </p>' def handler(): print(breaker()) print(html()) # vim: set filetype=python ts=4 sw=4 et si :