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annotate pytouhou/resource/loader.py @ 297:a09ac4650e0d

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Fix relative path handling and os-specific path separators.
author Thibaut Girka <thib@sitedethib.com>
date Tue, 06 Mar 2012 17:45:14 +0100
parents 2100276c289d
children 92a6fd2632f1
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rev   line source
285
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2012 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15 import os
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16 from glob import glob
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17 from itertools import chain
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18 from io import BytesIO
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19
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20 from pytouhou.formats.pbg3 import PBG3
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21 from pytouhou.formats.std import Stage
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22 from pytouhou.formats.ecl import ECL
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23 from pytouhou.formats.anm0 import ANM0
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24 from pytouhou.formats.msg import MSG
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25 from pytouhou.formats.sht import SHT
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26 from pytouhou.formats.exe import SHT as EoSDSHT
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27
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28
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29 from pytouhou.resource.anmwrapper import AnmWrapper
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30
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31
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32 class Directory(object):
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33 def __init__(self, path):
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34 self.path = path
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35
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36
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37 def __enter__(self):
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38 return self
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39
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40
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41 def __exit__(self, type, value, traceback):
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42 return False
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43
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44
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45 def list_files(self):
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46 file_list = []
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47 for path in os.listdir(self.path):
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48 if os.path.isfile(os.path.join(self.path, path)):
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49 file_list.append(path)
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50 return file_list
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51
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52
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53 def extract(self, name):
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54 with open(os.path.join(self.path, str(name)), 'rb') as file:
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55 contents = file.read()
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56 return contents
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57
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58
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59
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60 class ArchiveDescription(object):
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61 _formats = {'PBG3': PBG3}
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62
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63 def __init__(self, path, format_class, file_list=None):
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64 self.path = path
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65 self.format_class = format_class
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66 self.file_list = file_list or []
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67
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68
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69 def open(self):
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70 if self.format_class is Directory:
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71 return self.format_class(self.path)
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72
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73 file = open(self.path, 'rb')
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74 instance = self.format_class.read(file)
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75 return instance
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76
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77
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78 @classmethod
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79 def get_from_path(cls, path):
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80 if os.path.isdir(path):
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81 instance = Directory(path)
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82 file_list = instance.list_files()
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83 return cls(path, Directory, file_list)
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84 with open(path, 'rb') as file:
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85 magic = file.read(4)
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86 file.seek(0)
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87 format_class = cls._formats[magic]
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88 instance = format_class.read(file)
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89 file_list = instance.list_files()
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90 return cls(path, format_class, file_list)
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91
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92
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93
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94 class Loader(object):
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95 def __init__(self, game_dir=None):
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96 self.exe = None
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97 self.game_dir = game_dir
97
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98 self.known_files = {}
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99 self.instanced_ecls = {}
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100 self.instanced_anms = {}
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101 self.instanced_stages = {}
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102 self.instanced_msgs = {}
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103 self.instanced_shts = {}
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104
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105
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106 def scan_archives(self, paths_lists):
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107 for paths in paths_lists:
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108 def _expand_paths():
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109 for path in paths.split(os.path.pathsep):
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110 if self.game_dir and not os.path.isabs(path):
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111 path = os.path.join(self.game_dir, path)
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112 yield glob(path)
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113 paths = list(chain(*_expand_paths()))
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114 path = paths[0]
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115 if os.path.splitext(path)[1] == '.exe':
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116 self.exe = path
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117 else:
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118 archive_description = ArchiveDescription.get_from_path(path)
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119 for name in archive_description.file_list:
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120 self.known_files[name] = archive_description
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121
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122
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123 def get_file_data(self, name):
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124 with self.known_files[name].open() as archive:
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125 content = archive.extract(name)
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126 return content
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127
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128
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129 def get_file(self, name):
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130 with self.known_files[name].open() as archive:
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131 content = archive.extract(name)
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132 return BytesIO(content)
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133
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134
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135 def get_anm(self, name):
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136 if name not in self.instanced_anms:
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137 file = self.get_file(name)
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138 self.instanced_anms[name] = ANM0.read(file) #TODO: modular
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139 return self.instanced_anms[name]
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140
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141
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142 def get_stage(self, name):
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143 if name not in self.instanced_stages:
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144 file = self.get_file(name)
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145 self.instanced_stages[name] = Stage.read(file) #TODO: modular
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146 return self.instanced_stages[name]
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147
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148
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149 def get_ecl(self, name):
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150 if name not in self.instanced_ecls:
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151 file = self.get_file(name)
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152 self.instanced_ecls[name] = ECL.read(file) #TODO: modular
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153 return self.instanced_ecls[name]
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154
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155
133
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156 def get_msg(self, name):
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157 if name not in self.instanced_msgs:
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158 file = self.get_file(name)
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159 self.instanced_msgs[name] = MSG.read(file) #TODO: modular
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160 return self.instanced_msgs[name]
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161
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162
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163 def get_sht(self, name):
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164 if name not in self.instanced_shts:
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165 file = self.get_file(name)
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166 self.instanced_shts[name] = SHT.read(file) #TODO: modular
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167 return self.instanced_shts[name]
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168
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169
262
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170 def get_eosd_characters(self):
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171 #TODO: Move to pytouhou.games.eosd?
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172 path = self.exe
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173 with open(path, 'rb') as file:
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174 characters = EoSDSHT.read(file) #TODO: modular
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175 return characters
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176
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177
285
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178 def get_anm_wrapper(self, names, offsets=None):
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179 """Create an AnmWrapper for ANM files “names”.
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180
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181 If one of the files “names” does not exist or is not a valid ANM file,
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182 raises an exception.
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183 """
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184 return AnmWrapper((self.get_anm(name) for name in names), offsets)
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185
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186
285
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187 def get_anm_wrapper2(self, names, offsets=None):
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188 """Create an AnmWrapper for ANM files “names”.
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189
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190 Stop at the first non-existent or invalid ANM file if there is one,
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191 and return an AnmWrapper for all the previous correct files.
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192 """
282
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193 anms = []
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194
97
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195 try:
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196 for name in names:
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197 anms.append(self.get_anm(name))
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198 except KeyError:
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199 pass
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200
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201 return AnmWrapper(anms, offsets)
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202