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