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annotate pytouhou/resource/loader.py @ 307:5930b33a0370

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Minor refactoring
author Thibaut Girka <thib@sitedethib.com>
date Tue, 13 Mar 2012 19:52:42 +0100
parents 92a6fd2632f1
children 61adb5453e46
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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, InvalidExeException
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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 from pytouhou.utils.helpers import get_logger
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32
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33 logger = get_logger(__name__)
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34
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35
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36
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37 class Directory(object):
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38 def __init__(self, path):
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39 self.path = path
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40
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41
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42 def __enter__(self):
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43 return self
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44
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45
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46 def __exit__(self, type, value, traceback):
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47 return False
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48
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49
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50 def list_files(self):
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51 file_list = []
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52 for path in os.listdir(self.path):
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53 if os.path.isfile(os.path.join(self.path, path)):
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54 file_list.append(path)
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55 return file_list
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56
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57
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58 def extract(self, name):
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59 with open(os.path.join(self.path, str(name)), 'rb') as file:
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60 contents = file.read()
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61 return contents
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62
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64
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65 class ArchiveDescription(object):
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66 _formats = {'PBG3': PBG3}
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67
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68 def __init__(self, path, format_class, file_list=None):
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69 self.path = path
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70 self.format_class = format_class
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71 self.file_list = file_list or []
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72
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73
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74 def open(self):
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75 if self.format_class is Directory:
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76 return self.format_class(self.path)
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77
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78 file = open(self.path, 'rb')
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79 instance = self.format_class.read(file)
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80 return instance
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81
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82
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83 @classmethod
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84 def get_from_path(cls, path):
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85 if os.path.isdir(path):
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86 instance = Directory(path)
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87 file_list = instance.list_files()
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88 return cls(path, Directory, file_list)
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89 with open(path, 'rb') as file:
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90 magic = file.read(4)
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91 file.seek(0)
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92 format_class = cls._formats[magic]
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93 instance = format_class.read(file)
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94 file_list = instance.list_files()
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95 return cls(path, format_class, file_list)
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96
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97
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98
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99 class Loader(object):
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100 def __init__(self, game_dir=None):
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101 self.exe_files = []
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102 self.game_dir = game_dir
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103 self.known_files = {}
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104 self.instanced_ecls = {}
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105 self.instanced_anms = {}
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106 self.instanced_stages = {}
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107 self.instanced_msgs = {}
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108 self.instanced_shts = {}
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109
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110
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111 def scan_archives(self, paths_lists):
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112 for paths in paths_lists:
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113 def _expand_paths():
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114 for path in paths.split(os.path.pathsep):
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115 if self.game_dir and not os.path.isabs(path):
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116 path = os.path.join(self.game_dir, path)
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117 yield glob(path)
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118 paths = list(chain(*_expand_paths()))
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119 path = paths[0]
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120 if os.path.splitext(path)[1] == '.exe':
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121 self.exe_files.extend(paths)
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122 else:
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123 archive_description = ArchiveDescription.get_from_path(path)
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124 for name in archive_description.file_list:
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125 self.known_files[name] = archive_description
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126
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127
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128 def get_file_data(self, name):
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129 with self.known_files[name].open() as archive:
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130 content = archive.extract(name)
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131 return content
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132
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134 def get_file(self, name):
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135 with self.known_files[name].open() as archive:
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136 content = archive.extract(name)
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137 return BytesIO(content)
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138
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139
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140 def get_anm(self, name):
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141 if name not in self.instanced_anms:
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142 file = self.get_file(name)
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143 self.instanced_anms[name] = ANM0.read(file) #TODO: modular
97
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144 return self.instanced_anms[name]
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145
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146
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147 def get_stage(self, name):
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148 if name not in self.instanced_stages:
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149 file = self.get_file(name)
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150 self.instanced_stages[name] = Stage.read(file) #TODO: modular
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151 return self.instanced_stages[name]
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152
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153
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154 def get_ecl(self, name):
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155 if name not in self.instanced_ecls:
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156 file = self.get_file(name)
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157 self.instanced_ecls[name] = ECL.read(file) #TODO: modular
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158 return self.instanced_ecls[name]
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159
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160
133
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161 def get_msg(self, name):
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162 if name not in self.instanced_msgs:
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163 file = self.get_file(name)
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164 self.instanced_msgs[name] = MSG.read(file) #TODO: modular
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165 return self.instanced_msgs[name]
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166
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167
220
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168 def get_sht(self, name):
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169 if name not in self.instanced_shts:
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170 file = self.get_file(name)
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171 self.instanced_shts[name] = SHT.read(file) #TODO: modular
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172 return self.instanced_shts[name]
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173
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174
262
8fa660da5f0c Automatically search data files using different names.
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175 def get_eosd_characters(self):
231
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176 #TODO: Move to pytouhou.games.eosd?
298
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177 for path in self.exe_files:
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178 try:
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179 with open(path, 'rb') as file:
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180 characters = EoSDSHT.read(file)
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181 return characters
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182 except InvalidExeException:
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183 pass
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184 logger.error("Required game exe not found!")
229
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185
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186
285
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187 def get_anm_wrapper(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 If one of the files “names” does not exist or is not a valid ANM file,
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191 raises an exception.
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192 """
282
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193 return AnmWrapper((self.get_anm(name) for name in names), offsets)
97
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194
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195
285
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196 def get_anm_wrapper2(self, names, offsets=None):
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197 """Create an AnmWrapper for ANM files “names”.
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198
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199 Stop at the first non-existent or invalid ANM file if there is one,
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200 and return an AnmWrapper for all the previous correct files.
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201 """
282
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202 anms = []
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203
97
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204 try:
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205 for name in names:
282
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206 anms.append(self.get_anm(name))
97
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207 except KeyError:
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208 pass
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209
282
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diff changeset
210 return AnmWrapper(anms, offsets)
97
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211