data/pages/libraries/appengine.txt

   1 ====== App Engine ======
   2
   3 [[http://code.google.com/appengine/|Google App Engine]]: [[wp>Google_App_Engine|Google App Engine]] \\
   4
   5 ===== Example =====
   6
   7 <code python>
   8 from google.appengine.ext import webapp
   9 from google.appengine.ext.webapp.util import run_wsgi_app
  10 from google.appengine.ext import db
  11 import urllib
  12 from HTMLParser import HTMLParser
  13 import re
  14
  15 class MyHTMLParser(HTMLParser):
  16         def __init__(self):
  17                 HTMLParser.__init__(self)
  18                 self.s = ''
  19
  20         def handle_starttag(self, tag, attrs):
  21                 if tag == 'embed':
  22                         for attr in attrs:
  23                                 if attr[0] == 'flashvars':
  24                                         self.s = attr[1]
  25
  26         def feed(self, data):
  27                 HTMLParser.feed(self, data)
  28                 return self
  29
  30         def get_s(self):
  31                 return self.s
  32
  33 class Level(db.Model):
  34         content = db.TextProperty()
  35
  36 class Current(db.Model):
  37         x = db.IntegerProperty()
  38         y = db.IntegerProperty()
  39         d = db.IntegerProperty()
  40         n = db.IntegerProperty()
  41         m = db.IntegerProperty()
  42         l = db.IntegerProperty()
  43
  44 class Wrong(db.Model):
  45         x = db.IntegerProperty()
  46         y = db.IntegerProperty()
  47         d = db.IntegerProperty()
  48         l = db.IntegerProperty()
  49
  50 class CrossPage(webapp.RequestHandler):
  51         def get(self):
  52                 url = 'http://www.hacker.org/cross/index.php?name=kauesilv&password=a1b2c3d4'
  53                 regex = r'boardinit = "([^"]*)"'
  54                 debug = self.request.get('debug')
  55                 s = self.request.get('s')
  56                 path = self.request.get('path')
  57                 self.response.headers['Content-Type'] = 'text/plain'
  58                 if s == '1':
  59                         urllib.urlopen(url + '&sol=' + path).read()
  60                 s = urllib.urlopen(url).read()
  61                 #self.response.out.write(s + '\n')
  62                 board = re.compile(regex).search(s).groups()[0].split(',')
  63                 self.response.out.write(str(len(board)) + '\n' + str(len(board[0])) + '\n')
  64                 for line in board:
  65                         self.response.out.write(str(line) + '\n')
  66
  67 class MainPage(webapp.RequestHandler):
  68         def get(self):
  69                 delete = self.request.get('delete')
  70                 if delete == '1':
  71                         db.delete(Wrong.all().fetch(100))
  72                         if Wrong.all().count(1) == 1:
  73                                 return
  74
  75                 url = 'http://www.hacker.org/coil/index.php?name=kauesilv&password=a1b2c3d4'
  76                 regex = r'x=(\d*)&y=(\d*)&board=(.*)'
  77                 regexLevel = r'Level: (\d*)'
  78                 self.response.headers['Content-Type'] = 'text/plain'
  79                 debug = self.request.get('debug')
  80                 s = self.request.get('s')
  81                 r = self.request.get('r')
  82                 x = self.request.get('x')
  83                 y = self.request.get('y')
  84                 d = self.request.get('d')
  85                 w = self.request.get('w')
  86                 path = self.request.get('path')
  87
  88                 levels = Level.all()
  89                 currents = Current.all()
  90
  91                 if s == '1':
  92                         urllib.urlopen(url + '&x=' + x + '&y=' + y + '&path=' + path).read()
  93
  94                 if w == '1':
  95                         wrong = Wrong()
  96                         wrong.x = int(x)
  97                         wrong.y = int(y)
  98                         wrong.d = int(d)
  99                         wrong.l = currents.fetch(1)[0].l
 100                         wrong.put()
 101
 102                 if s == '1' or r == '1':
 103                         s = urllib.urlopen(url).read()
 104                         x, y, board = re.compile(regex).search(MyHTMLParser().feed(s).get_s()).groups()
 105                         lvl, = re.compile(regexLevel).search(s).groups()
 106                         db.delete(Level.all().fetch(1000000))
 107                         db.delete(Current.all().fetch(1000000))
 108
 109                         level = Level()
 110                         level.content = x + '\n' + y + '\n' + board + '\n'
 111                         level.put()
 112
 113                         current = Current()
 114                         current.x = current.y = current.d = 0
 115                         current.n = int(x)
 116                         current.m = int(y)
 117                         current.l = int(lvl)
 118                         current.put()
 119
 120                 cur = currents.fetch(1)[0]
 121                 while(True):
 122                         cur.d = cur.d + 1
 123                         if(cur.d == 4):
 124                                 cur.d = 0
 125                                 cur.y = cur.y + 1
 126                                 if(cur.y == cur.m):
 127                                         cur.y = 0
 128                                         cur.x = cur.x + 1
 129                                         if(cur.x == cur.n):
 130                                                 cur.x = 0
 131                         cur.put()
 132                         wrong = Wrong().gql("WHERE x = :1 AND y = :2 AND d = :3 AND l = :4", cur.x, cur.y, cur.d, cur.l)
 133                         if(wrong.count(1) == 0):
 134                                 break
 135
 136                 self.response.out.write(str(cur.x) + '\n' + str(cur.y) + '\n' + str(cur.d) + '\n' + str(cur.l) + '\n')
 137                 self.response.out.write(levels.fetch(1)[0].content)
 138
 139                 if debug == '1':
 140                         self.response.out.write('\n\n----DEBUG----\n\nwrongs\n')
 141                         wrongs = Wrong.gql("WHERE l = :1", cur.l)
 142                         for wrong in wrongs:
 143                                 self.response.out.write(str(wrong.x) + ' ' + str(wrong.y) + ' ' + str(wrong.d) + ' ' + str(wrong.l) + '\n')
 144
 145                         self.response.out.write('\ncurrents\n')
 146                         for current in currents:
 147                                 self.response.out.write(str(current.x) + ' ' + str(current.y) + ' ' + str(current.d) + ' ' + str(current.l) + '\n')
 148
 149 application = webapp.WSGIApplication([('/', MainPage), ('/cross', CrossPage)], debug=True)
 150
 151 def main():
 152         run_wsgi_app(application)
 153
 154 if __name__ == "__main__":
 155         main()
 156 </code>
 157