Mercurial > cpython-lru_cache-weakref

annotate Demo/cgi/wiki.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents dc420de17a6e
children 6b18a095c2e7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 """Wiki main program. Imported and run by cgi3.py."""
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2
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3 import os, re, cgi, sys, tempfile
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4 escape = cgi.escape
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5
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6 def main():
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7 form = cgi.FieldStorage()
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8 print "Content-type: text/html"
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9 print
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10 cmd = form.getvalue("cmd", "view")
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11 page = form.getvalue("page", "FrontPage")
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12 wiki = WikiPage(page)
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13 method = getattr(wiki, 'cmd_' + cmd, None) or wiki.cmd_view
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14 method(form)
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15
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16 class WikiPage:
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17
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18 homedir = tempfile.gettempdir()
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19 scripturl = os.path.basename(sys.argv[0])
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20
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21 def __init__(self, name):
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22 if not self.iswikiword(name):
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23 raise ValueError, "page name is not a wiki word"
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24 self.name = name
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25 self.load()
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26
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27 def cmd_view(self, form):
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28 print "<h1>", escape(self.splitwikiword(self.name)), "</h1>"
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29 print "<p>"
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30 for line in self.data.splitlines():
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31 line = line.rstrip()
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32 if not line:
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33 print "<p>"
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34 else:
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35 print self.formatline(line)
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36 print "<hr>"
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37 print "<p>", self.mklink("edit", self.name, "Edit this page") + ";"
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38 print self.mklink("view", "FrontPage", "go to front page") + "."
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39
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40 def formatline(self, line):
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41 words = []
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42 for word in re.split('(\W+)', line):
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43 if self.iswikiword(word):
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44 if os.path.isfile(self.mkfile(word)):
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45 word = self.mklink("view", word, word)
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46 else:
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47 word = self.mklink("new", word, word + "*")
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48 else:
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49 word = escape(word)
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50 words.append(word)
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51 return "".join(words)
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52
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53 def cmd_edit(self, form, label="Change"):
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54 print "<h1>", label, self.name, "</h1>"
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55 print '<form method="POST" action="%s">' % self.scripturl
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56 s = '<textarea cols="70" rows="20" name="text">%s</textarea>'
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57 print s % self.data
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58 print '<input type="hidden" name="cmd" value="create">'
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59 print '<input type="hidden" name="page" value="%s">' % self.name
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60 print '<br>'
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61 print '<input type="submit" value="%s Page">' % label
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62 print "</form>"
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63
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64 def cmd_create(self, form):
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65 self.data = form.getvalue("text", "").strip()
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66 error = self.store()
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67 if error:
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68 print "<h1>I'm sorry. That didn't work</h1>"
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69 print "<p>An error occurred while attempting to write the file:"
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70 print "<p>", escape(error)
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71 else:
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72 # Use a redirect directive, to avoid "reload page" problems
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73 print "<head>"
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74 s = '<meta http-equiv="refresh" content="1; URL=%s">'
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75 print s % (self.scripturl + "?cmd=view&page=" + self.name)
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76 print "<head>"
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77 print "<h1>OK</h1>"
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78 print "<p>If nothing happens, please click here:",
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79 print self.mklink("view", self.name, self.name)
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80
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81 def cmd_new(self, form):
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82 self.cmd_edit(form, label="Create")
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83
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84 def iswikiword(self, word):
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85 return re.match("[A-Z][a-z]+([A-Z][a-z]*)+", word)
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86
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87 def splitwikiword(self, word):
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88 chars = []
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89 for c in word:
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90 if chars and c.isupper():
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91 chars.append(' ')
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92 chars.append(c)
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93 return "".join(chars)
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94
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95 def mkfile(self, name=None):
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96 if name is None:
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97 name = self.name
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98 return os.path.join(self.homedir, name + ".txt")
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99
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100 def mklink(self, cmd, page, text):
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101 link = self.scripturl + "?cmd=" + cmd + "&page=" + page
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102 return '<a href="%s">%s</a>' % (link, text)
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103
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104 def load(self):
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105 try:
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106 f = open(self.mkfile())
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107 data = f.read().strip()
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108 f.close()
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109 except IOError:
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110 data = ""
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111 self.data = data
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112
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113 def store(self):
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114 data = self.data
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115 try:
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116 f = open(self.mkfile(), "w")
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117 f.write(data)
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118 if data and not data.endswith('\n'):
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119 f.write('\n')
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120 f.close()
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121 return ""
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122 except IOError, err:
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123 return "IOError: %s" % str(err)