Some really simple cgi examples. cgi3 is a MiniWiki.
diff --git a/Demo/cgi/cgi0.sh b/Demo/cgi/cgi0.sh
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+++ b/Demo/cgi/cgi0.sh
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+#! /bin/sh
+
+# If you can't get this to work, your web server isn't set up right
+
+echo Content-type: text/plain
+echo
+echo Hello world
+echo This is cgi0.sh
diff --git a/Demo/cgi/cgi1.py b/Demo/cgi/cgi1.py
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+++ b/Demo/cgi/cgi1.py
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+#!/usr/local/bin/python
+
+"""CGI test 1 - check server setup."""
+
+# Until you get this to work, your web server isn't set up right or
+# your Python isn't set up right.
+
+# If cgi0.sh works but cgi1.py, check the #! line and the file
+# permissions. The docs for the cgi.py module have debugging tips.
+
+print "Content-type: text/html"
+print
+print "<h1>Hello world</h1>"
+print "<p>This is cgi1.py"
diff --git a/Demo/cgi/cgi2.py b/Demo/cgi/cgi2.py
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+++ b/Demo/cgi/cgi2.py
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+#!/usr/local/bin/python
+
+"""CGI test 2 - basic use of cgi module."""
+
+import cgitb; cgitb.enable()
+
+import cgi
+
+def main():
+ form = cgi.FieldStorage()
+ print "Content-type: text/html"
+ print
+ if not form:
+ print "<h1>No Form Keys</h1>"
+ else:
+ print "<h1>Form Keys</h1>"
+ for key in form.keys():
+ value = form[key].value
+ print "<p>", cgi.escape(key), ":", cgi.escape(value)
+
+if __name__ == "__main__":
+ main()
diff --git a/Demo/cgi/cgi3.py b/Demo/cgi/cgi3.py
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+++ b/Demo/cgi/cgi3.py
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+#!/usr/local/bin/python
+
+"""CGI test 3 (persistent data)."""
+
+import cgitb; cgitb.enable()
+
+import os, re, cgi, sys
+escape = cgi.escape
+
+def main():
+ form = cgi.FieldStorage()
+ print "Content-type: text/html"
+ print
+ cmd = form.getvalue("cmd") or "view"
+ page = form.getvalue("page") or "FrontPage"
+ wiki = WikiPage(page)
+ wiki.load()
+ method = getattr(wiki, 'cmd_' + cmd, None) or wiki.cmd_view
+ method(form)
+
+class WikiPage:
+
+ homedir = os.path.dirname(sys.argv[0])
+ scripturl = os.path.basename(sys.argv[0])
+
+ def __init__(self, name):
+ 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>"
+ continue
+ words = re.split('(\W+)', line)
+ for i in range(len(words)):
+ word = words[i]
+ 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[i] = word
+ print "".join(words)
+ print "<hr>"
+ print "<p>", self.mklink("edit", self.name, "Edit this page") + ","
+ print self.mklink("view", "FrontPage", "go to front page") + "."
+
+ 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()
+ self.store()
+ self.cmd_view(form)
+
+ def cmd_new(self, form):
+ self.cmd_edit(form, label="Create Page")
+
+ 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)
+
+ 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)
+ f.close()
+ return ""
+ except IOError, err:
+ return "IOError: %s" % str(err)
+
+if __name__ == "__main__":
+ main()