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Restructure: move all wiki code into a separate module.
This commit is contained in:
Guido van Rossum
parent
26a1ac462c
commit
f66cccf506
2 changed files with 116 additions and 113 deletions
114
Demo/cgi/cgi3.py
114
Demo/cgi/cgi3.py
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@ -4,119 +4,7 @@
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import cgitb; cgitb.enable()
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import os, re, cgi, sys
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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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wiki.load()
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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 = "/tmp"
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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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continue
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words = re.split('(\W+)', line)
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for i in range(len(words)):
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word = words[i]
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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[i] = word
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print "".join(words)
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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 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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self.cmd_view(form)
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def cmd_new(self, form):
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self.cmd_edit(form, label="Create Page")
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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)
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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, err:
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return "IOError: %s" % str(err)
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from wiki import main
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if __name__ == "__main__":
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main()
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115
Demo/cgi/wiki.py
Normal file
115
Demo/cgi/wiki.py
Normal file
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@ -0,0 +1,115 @@
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"""Wiki main program. Imported and run by cgi3.py."""
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import os, re, cgi, sys
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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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wiki.load()
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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 = "/tmp"
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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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continue
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words = re.split('(\W+)', line)
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for i in range(len(words)):
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word = words[i]
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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[i] = word
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print "".join(words)
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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 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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self.cmd_view(form)
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def cmd_new(self, form):
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self.cmd_edit(form, label="Create Page")
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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, err:
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return "IOError: %s" % str(err)
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