| """Wiki main program. Imported and run by cgi3.py.""" |
| |
| import os, re, cgi, sys, tempfile |
| escape = cgi.escape |
| |
| def main(): |
| form = cgi.FieldStorage() |
| print "Content-type: text/html" |
| print |
| cmd = form.getvalue("cmd", "view") |
| page = form.getvalue("page", "FrontPage") |
| wiki = WikiPage(page) |
| method = getattr(wiki, 'cmd_' + cmd, None) or wiki.cmd_view |
| method(form) |
| |
| class WikiPage: |
| |
| homedir = tempfile.gettempdir() |
| scripturl = os.path.basename(sys.argv[0]) |
| |
| def __init__(self, name): |
| if not self.iswikiword(name): |
| raise ValueError, "page name is not a wiki word" |
| self.name = name |
| self.load() |
| |
| def cmd_view(self, form): |
| print "<h1>", escape(self.splitwikiword(self.name)), "</h1>" |
| print "<p>" |
| for line in self.data.splitlines(): |
| line = line.rstrip() |
| if not line: |
| print "<p>" |
| else: |
| print self.formatline(line) |
| print "<hr>" |
| print "<p>", self.mklink("edit", self.name, "Edit this page") + ";" |
| print self.mklink("view", "FrontPage", "go to front page") + "." |
| |
| def formatline(self, line): |
| words = [] |
| for word in re.split('(\W+)', line): |
| if self.iswikiword(word): |
| if os.path.isfile(self.mkfile(word)): |
| word = self.mklink("view", word, word) |
| else: |
| word = self.mklink("new", word, word + "*") |
| else: |
| word = escape(word) |
| words.append(word) |
| return "".join(words) |
| |
| def cmd_edit(self, form, label="Change"): |
| print "<h1>", label, self.name, "</h1>" |
| print '<form method="POST" action="%s">' % self.scripturl |
| s = '<textarea cols="70" rows="20" name="text">%s</textarea>' |
| print s % self.data |
| print '<input type="hidden" name="cmd" value="create">' |
| print '<input type="hidden" name="page" value="%s">' % self.name |
| print '<br>' |
| print '<input type="submit" value="%s Page">' % label |
| print "</form>" |
| |
| def cmd_create(self, form): |
| self.data = form.getvalue("text", "").strip() |
| error = self.store() |
| if error: |
| print "<h1>I'm sorry. That didn't work</h1>" |
| print "<p>An error occurred while attempting to write the file:" |
| print "<p>", escape(error) |
| else: |
| # Use a redirect directive, to avoid "reload page" problems |
| print "<head>" |
| s = '<meta http-equiv="refresh" content="1; URL=%s">' |
| print s % (self.scripturl + "?cmd=view&page=" + self.name) |
| print "<head>" |
| print "<h1>OK</h1>" |
| print "<p>If nothing happens, please click here:", |
| print self.mklink("view", self.name, self.name) |
| |
| def cmd_new(self, form): |
| self.cmd_edit(form, label="Create") |
| |
| def iswikiword(self, word): |
| return re.match("[A-Z][a-z]+([A-Z][a-z]*)+", word) |
| |
| def splitwikiword(self, word): |
| chars = [] |
| for c in word: |
| if chars and c.isupper(): |
| chars.append(' ') |
| chars.append(c) |
| return "".join(chars) |
| |
| def mkfile(self, name=None): |
| if name is None: |
| name = self.name |
| return os.path.join(self.homedir, name + ".txt") |
| |
| def mklink(self, cmd, page, text): |
| link = self.scripturl + "?cmd=" + cmd + "&page=" + page |
| return '<a href="%s">%s</a>' % (link, text) |
| |
| def load(self): |
| try: |
| f = open(self.mkfile()) |
| data = f.read().strip() |
| f.close() |
| except IOError: |
| data = "" |
| self.data = data |
| |
| def store(self): |
| data = self.data |
| try: |
| f = open(self.mkfile(), "w") |
| f.write(data) |
| if data and not data.endswith('\n'): |
| f.write('\n') |
| f.close() |
| return "" |
| except IOError, err: |
| return "IOError: %s" % str(err) |