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