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comparison roundup/cgi/cgitb.py @ 1065:0f9aa62917bd

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much nicer error messages when there's a templating error
author Richard Jones <richard@users.sourceforge.net>
date Fri, 06 Sep 2002 07:21:31 +0000
parents 55ab0c5b49f9
children cf22c87d6fce
comparison
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1064:fca22f820f87 1065:0f9aa62917bd
1 # 1 #
2 # This module was written by Ka-Ping Yee, <ping@lfw.org>. 2 # This module was written by Ka-Ping Yee, <ping@lfw.org>.
3 # 3 #
4 # $Id: cgitb.py,v 1.1 2002-08-30 08:28:44 richard Exp $ 4 # $Id: cgitb.py,v 1.2 2002-09-06 07:21:31 richard Exp $
5 5
6 __doc__ = """ 6 __doc__ = """
7 Extended CGI traceback handler by Ka-Ping Yee, <ping@lfw.org>. 7 Extended CGI traceback handler by Ka-Ping Yee, <ping@lfw.org>.
8 """ 8 """
9 9
13 13
14 def breaker(): 14 def breaker():
15 return ('<body bgcolor="white">' + 15 return ('<body bgcolor="white">' +
16 '<font color="white" size="-5"> > </font> ' + 16 '<font color="white" size="-5"> > </font> ' +
17 '</table>' * 5) 17 '</table>' * 5)
18
19 def niceDict(indent, dict):
20 l = []
21 for k,v in dict.items():
22 l.append('%s%s: %r'%(indent,k,v))
23 return '\n'.join(l)
24
25 def pt_html(context=5):
26 import cgi
27 etype, evalue = sys.exc_type, sys.exc_value
28 if type(etype) is types.ClassType:
29 etype = etype.__name__
30 pyver = 'Python ' + string.split(sys.version)[0] + '<br>' + sys.executable
31 head = pydoc.html.heading(
32 '<font size=+1><strong>%s</strong>: %s</font>'%(etype, evalue),
33 '#ffffff', '#777777', pyver)
34
35 head = head + _('<p>A problem occurred in your template</p><pre>')
36
37 l = []
38 for frame, file, lnum, func, lines, index in inspect.trace(context):
39 args, varargs, varkw, locals = inspect.getargvalues(frame)
40 if locals.has_key('__traceback_info__'):
41 ti = locals['__traceback_info__']
42 l.append(str(ti))
43 if locals.has_key('__traceback_supplement__'):
44 ts = locals['__traceback_supplement__']
45 if len(ts) == 2:
46 supp, context = ts
47 l.append('in template %r'%context.id)
48 elif len(ts) == 3:
49 supp, context, info = ts
50 l.append('in expression %r\n%s\n%s\n'%(info,
51 niceDict(' ', context.global_vars),
52 niceDict(' ', context.local_vars)))
53 # context._scope_stack))
54 return head + cgi.escape('\n'.join(l)) + '</pre><p>&nbsp;</p>'
18 55
19 def html(context=5): 56 def html(context=5):
20 etype, evalue = sys.exc_type, sys.exc_value 57 etype, evalue = sys.exc_type, sys.exc_value
21 if type(etype) is types.ClassType: 58 if type(etype) is types.ClassType:
22 etype = etype.__name__ 59 etype = etype.__name__
32 69
33 indent = '<tt><small>%s</small>&nbsp;</tt>' % ('&nbsp;' * 5) 70 indent = '<tt><small>%s</small>&nbsp;</tt>' % ('&nbsp;' * 5)
34 traceback = [] 71 traceback = []
35 for frame, file, lnum, func, lines, index in inspect.trace(context): 72 for frame, file, lnum, func, lines, index in inspect.trace(context):
36 if file is None: 73 if file is None:
37 link = '&lt;file is None - probably inside <tt>eval</tt> or <tt>exec</tt>&gt;' 74 link = '''&lt;file is None - probably inside <tt>eval</tt> or
75 <tt>exec</tt>&gt;'''
38 else: 76 else:
39 file = os.path.abspath(file) 77 file = os.path.abspath(file)
40 link = '<a href="file:%s">%s</a>' % (file, pydoc.html.escape(file)) 78 link = '<a href="file:%s">%s</a>' % (file, pydoc.html.escape(file))
41 args, varargs, varkw, locals = inspect.getargvalues(frame) 79 args, varargs, varkw, locals = inspect.getargvalues(frame)
42 if func == '?': 80 if func == '?':
52 90
53 if index is None or file is None: 91 if index is None or file is None:
54 traceback.append('<p>' + level) 92 traceback.append('<p>' + level)
55 continue 93 continue
56 94
57 # do a fil inspection 95 # do a file inspection
58 names = [] 96 names = []
59 def tokeneater(type, token, start, end, line, names=names): 97 def tokeneater(type, token, start, end, line, names=names):
60 if type == tokenize.NAME and token not in keyword.kwlist: 98 if type == tokenize.NAME and token not in keyword.kwlist:
61 if token not in names: 99 if token not in names:
62 names.append(token) 100 names.append(token)
66 lnum[0] = lnum[0] + 1 104 lnum[0] = lnum[0] + 1
67 return line 105 return line
68 106
69 try: 107 try:
70 tokenize.tokenize(linereader, tokeneater) 108 tokenize.tokenize(linereader, tokeneater)
71 except IndexError: pass 109 except IndexError:
110 pass
72 lvals = [] 111 lvals = []
73 for name in names: 112 for name in names:
74 if name in frame.f_code.co_varnames: 113 if name in frame.f_code.co_varnames:
75 if locals.has_key(name): 114 if locals.has_key(name):
76 value = pydoc.html.repr(locals[name]) 115 value = pydoc.html.repr(locals[name])
81 if frame.f_globals.has_key(name): 120 if frame.f_globals.has_key(name):
82 value = pydoc.html.repr(frame.f_globals[name]) 121 value = pydoc.html.repr(frame.f_globals[name])
83 else: 122 else:
84 value = _('<em>undefined</em>') 123 value = _('<em>undefined</em>')
85 name = '<em>global</em> <strong>%s</strong>' % name 124 name = '<em>global</em> <strong>%s</strong>' % name
86 lvals.append('%s&nbsp;= %s' % (name, value)) 125 lvals.append('%s&nbsp;= %s'%(name, value))
87 if lvals: 126 if lvals:
88 lvals = string.join(lvals, ', ') 127 lvals = string.join(lvals, ', ')
89 lvals = indent + ''' 128 lvals = indent + '<small><font color="#909090">%s'\
90 <small><font color="#909090">%s</font></small><br>''' % lvals 129 '</font></small><br>'%lvals
91 else: 130 else:
92 lvals = '' 131 lvals = ''
93 132
94 excerpt = [] 133 excerpt = []
95 i = lnum - index 134 i = lnum - index
122 print breaker() 161 print breaker()
123 print html() 162 print html()
124 163
125 # 164 #
126 # $Log: not supported by cvs2svn $ 165 # $Log: not supported by cvs2svn $
166 # Revision 1.1 2002/08/30 08:28:44 richard
167 # New CGI interface support
168 #
127 # Revision 1.10 2002/01/16 04:49:45 richard 169 # Revision 1.10 2002/01/16 04:49:45 richard
128 # Handle a special case that the CGI interface tickles. I need to check if 170 # Handle a special case that the CGI interface tickles. I need to check if
129 # this needs fixing in python's core. 171 # this needs fixing in python's core.
130 # 172 #
131 # Revision 1.9 2002/01/08 11:56:24 richard 173 # Revision 1.9 2002/01/08 11:56:24 richard
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