Mercurial > mamba

annotate mamba/habitats/userlevelmenu.py @ 577:486c7ae141ea

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Add client support for level server API version 2.
author Simon Cross <hodgestar@gmail.com>
date Sun, 06 Oct 2013 22:46:41 +0200
parents 5f1aa75c9e74
children fca61cd8fc33
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1 """Level menu."""
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2
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3 import urllib2
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4 import zipfile
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5 import StringIO
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6
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7 from mamba.habitats.levelmenu import LevelMenu
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8 from mamba.level import Level
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9 from mamba.constants import LEVEL_SERVER, LEVEL_SERVER_VERSION
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10 from mamba.data import get_level_list, load_file
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11
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12
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13 class UserLevelApi(object):
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14
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15 def __init__(self, ctype, url=LEVEL_SERVER, timeout=10):
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16 assert ctype in ("curated", "uncurated")
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17 assert url.endswith("/")
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18 self.ctype = ctype
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19 self.level_namespace = ctype
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20 self.url = url
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21 self.timeout = timeout
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22 self.cache = {}
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23
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24 def _url_data(self, route):
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25 url = "%s%s/%s" % (self.url, self.ctype, route)
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26 return urllib2.urlopen(url, timeout=self.timeout).read()
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27
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28 def _populate_level(self, name):
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29 try:
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30 source = self._url_data("level/%s" % name)
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31 level = Level(name, self.level_namespace, source)
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32 except:
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33 print "Failed to download online level %r" % name
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34 return
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35 self.cache[name] = level
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36
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37 def _populate_cache(self):
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38 try:
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39 data = self._url_data("index")
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40 except:
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41 print "Failed to download online level index."
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42 return
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43 levels = [x.strip() for x in data.splitlines()]
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44
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45 for name in levels:
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46 self._populate_level(name)
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47
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48 def _populate_cache_from_zip(self):
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49 try:
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50 data = self._url_data("levels.zip")
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51 except:
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52 print "Failed to download online level zip."
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53 return
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54 level_zip = zipfile.ZipFile(StringIO.StringIO(data), "r")
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55 levels = level_zip.namelist()
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56 for level in levels:
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57 try:
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58 source = level_zip.read(level)
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59 self.cache[level] = Level(level, self.level_namespace, source)
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60 except:
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61 print "Failed to parse online level %r" % level
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62
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63 def list_levels(self):
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64 if not self.cache:
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65 if LEVEL_SERVER_VERSION >= 2:
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66 self._populate_cache_from_zip()
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67 else:
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68 self._populate_cache()
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69 return sorted(self.cache.keys())
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70
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71 def print_levels(self):
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72 title = "%s levels:" % self.ctype.title()
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73 print title
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74 print "=" * len(title)
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75 for name in self.list_levels():
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76 print name
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77 print "=" * len(title)
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78
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79 def get_level(self, name):
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80 if name not in self.cache:
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81 self._populate_level(name)
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82 return self.cache[name]
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83
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84
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85 class NetworkLevelMenu(LevelMenu):
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86
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87 API = UserLevelApi("curated")
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88
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89 @property
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90 def level_namespace(self):
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91 self.API.level_namespace
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92
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93 def list_levels(self):
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94 return self.API.list_levels()
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95
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96 def get_level(self, name):
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97 return self.API.get_level(name)
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98
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99
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100 class UserLevelMenu(LevelMenu):
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101
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102 level_namespace = "user"
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103
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104 def on_enter(self):
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105 super(UserLevelMenu, self).on_enter()
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106 self._levels = {}
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107 self._level_list = []
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108
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109 def list_levels(self):
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110 if not self._level_list:
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111 for name in get_level_list('user_levels', is_user_dir=True):
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112 try:
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113 self.get_level(name)
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114 self._level_list.append(name)
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115 except:
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116 print "Invalid user level:", name
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117 return self._level_list[:]
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118
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119 def get_level(self, name):
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120 if name not in self._levels:
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121 src = load_file('user_levels/%s.txt' % (name,), is_user_dir=True)
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122 self._levels[name] = Level(name, self.level_namespace, src.read())
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123 return self._levels[name]