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annotate roundup/cgi/cgitb.py @ 1103:db787cef1385

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handled some XXXs
author Richard Jones <richard@users.sourceforge.net>
date Tue, 10 Sep 2002 12:44:42 +0000
parents e5826025eeb7
children 7e193bbda38e
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1 #
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2 # This module was written by Ka-Ping Yee, <ping@lfw.org>.
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3 #
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4 # $Id: cgitb.py,v 1.5 2002-09-10 01:07:05 richard Exp $
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5
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6 __doc__ = """
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7 Extended CGI traceback handler by Ka-Ping Yee, <ping@lfw.org>.
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8 """
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9
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10 import sys, os, types, string, keyword, linecache, tokenize, inspect
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11 import pydoc, traceback
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12
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13 from roundup.i18n import _
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14
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15 def breaker():
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16 return ('<body bgcolor="white">' +
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17 '<font color="white" size="-5"> > </font> ' +
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18 '</table>' * 5)
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19
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20 def niceDict(indent, dict):
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21 l = []
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22 for k,v in dict.items():
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23 l.append('%s%s: %r'%(indent,k,v))
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24 return '\n'.join(l)
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25
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26 def pt_html(context=5):
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27 import cgi
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28 etype, evalue = sys.exc_type, sys.exc_value
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29 if type(etype) is types.ClassType:
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30 etype = etype.__name__
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31 pyver = 'Python ' + string.split(sys.version)[0] + '<br>' + sys.executable
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32 head = pydoc.html.heading(
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33 '<font size=+1><strong>%s</strong>: %s</font>'%(etype, evalue),
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34 '#ffffff', '#777777', pyver)
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35
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36 head = head + _('<p>A problem occurred in your template</p><pre>')
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37
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38 l = []
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39 for frame, file, lnum, func, lines, index in inspect.trace(context):
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40 args, varargs, varkw, locals = inspect.getargvalues(frame)
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41 if locals.has_key('__traceback_info__'):
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42 ti = locals['__traceback_info__']
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43 l.append(str(ti))
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44 if locals.has_key('__traceback_supplement__'):
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45 ts = locals['__traceback_supplement__']
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46 if len(ts) == 2:
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47 supp, context = ts
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48 l.append('in template %r'%context.id)
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49 elif len(ts) == 3:
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50 supp, context, info = ts
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51 l.append('in expression %r\n current variables:\n%s\n%s\n'%(info,
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52 niceDict(' ', context.global_vars),
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53 niceDict(' ', context.local_vars)))
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54 # context._scope_stack))
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55
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56 l.append('\n')
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57 l.append(''.join(traceback.format_exception(etype, evalue,
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58 sys.exc_traceback)))
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59 return head + cgi.escape('\n'.join(l)) + '</pre><p>&nbsp;</p>'
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60
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61 def html(context=5):
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62 etype, evalue = sys.exc_type, sys.exc_value
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63 if type(etype) is types.ClassType:
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64 etype = etype.__name__
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65 pyver = 'Python ' + string.split(sys.version)[0] + '<br>' + sys.executable
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66 head = pydoc.html.heading(
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67 '<font size=+1><strong>%s</strong>: %s</font>'%(etype, evalue),
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68 '#ffffff', '#777777', pyver)
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69
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70 head = head + (_('<p>A problem occurred while running a Python script. '
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71 'Here is the sequence of function calls leading up to '
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72 'the error, with the most recent (innermost) call first. '
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73 'The exception attributes are:'))
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74
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75 indent = '<tt><small>%s</small>&nbsp;</tt>' % ('&nbsp;' * 5)
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76 traceback = []
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77 for frame, file, lnum, func, lines, index in inspect.trace(context):
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78 if file is None:
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79 link = '''&lt;file is None - probably inside <tt>eval</tt> or
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80 <tt>exec</tt>&gt;'''
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81 else:
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82 file = os.path.abspath(file)
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83 link = '<a href="file:%s">%s</a>' % (file, pydoc.html.escape(file))
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84 args, varargs, varkw, locals = inspect.getargvalues(frame)
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85 if func == '?':
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86 call = ''
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87 else:
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88 call = 'in <strong>%s</strong>' % func + inspect.formatargvalues(
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89 args, varargs, varkw, locals,
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90 formatvalue=lambda value: '=' + pydoc.html.repr(value))
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91
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92 level = '''
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93 <table width="100%%" bgcolor="#dddddd" cellspacing=0 cellpadding=2 border=0>
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94 <tr><td>%s %s</td></tr></table>''' % (link, call)
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95
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96 if index is None or file is None:
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97 traceback.append('<p>' + level)
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98 continue
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99
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100 # do a file inspection
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101 names = []
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102 def tokeneater(type, token, start, end, line, names=names):
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103 if type == tokenize.NAME and token not in keyword.kwlist:
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104 if token not in names:
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105 names.append(token)
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106 if type == tokenize.NEWLINE: raise IndexError
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107 def linereader(file=file, lnum=[lnum]):
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108 line = linecache.getline(file, lnum[0])
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109 lnum[0] = lnum[0] + 1
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110 return line
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111
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112 try:
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113 tokenize.tokenize(linereader, tokeneater)
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114 except IndexError:
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115 pass
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116 lvals = []
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117 for name in names:
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118 if name in frame.f_code.co_varnames:
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119 if locals.has_key(name):
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120 value = pydoc.html.repr(locals[name])
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121 else:
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122 value = _('<em>undefined</em>')
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123 name = '<strong>%s</strong>' % name
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124 else:
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125 if frame.f_globals.has_key(name):
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126 value = pydoc.html.repr(frame.f_globals[name])
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127 else:
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128 value = _('<em>undefined</em>')
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129 name = '<em>global</em> <strong>%s</strong>' % name
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130 lvals.append('%s&nbsp;= %s'%(name, value))
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131 if lvals:
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132 lvals = string.join(lvals, ', ')
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133 lvals = indent + '<small><font color="#909090">%s'\
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134 '</font></small><br>'%lvals
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135 else:
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136 lvals = ''
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137
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138 excerpt = []
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139 i = lnum - index
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140 for line in lines:
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141 number = '&nbsp;' * (5-len(str(i))) + str(i)
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142 number = '<small><font color="#909090">%s</font></small>' % number
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143 line = '<tt>%s&nbsp;%s</tt>' % (number, pydoc.html.preformat(line))
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144 if i == lnum:
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145 line = '''
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146 <table width="100%%" bgcolor="#white" cellspacing=0 cellpadding=0 border=0>
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147 <tr><td>%s</td></tr></table>''' % line
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148 excerpt.append('\n' + line)
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149 if i == lnum:
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150 excerpt.append(lvals)
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151 i = i + 1
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152 traceback.append('<p>' + level + string.join(excerpt, '\n'))
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153
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154 traceback.reverse()
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155
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156 exception = '<p><strong>%s</strong>: %s' % (str(etype), str(evalue))
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157 attribs = []
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158 if type(evalue) is types.InstanceType:
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159 for name in dir(evalue):
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160 value = pydoc.html.repr(getattr(evalue, name))
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161 attribs.append('<br>%s%s&nbsp;= %s' % (indent, name, value))
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162
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163 return head + string.join(attribs) + string.join(traceback) + '<p>&nbsp;</p>'
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164
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165 def handler():
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166 print breaker()
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167 print html()
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168
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169 # vim: set filetype=python ts=4 sw=4 et si
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