| 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)
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