Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/pip/_internal/commands/cache.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 import logging |
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2 import os |
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3 import textwrap |
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4 |
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5 import pip._internal.utils.filesystem as filesystem |
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6 from pip._internal.cli.base_command import Command |
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7 from pip._internal.cli.status_codes import ERROR, SUCCESS |
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8 from pip._internal.exceptions import CommandError, PipError |
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9 from pip._internal.utils.typing import MYPY_CHECK_RUNNING |
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10 |
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11 if MYPY_CHECK_RUNNING: |
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12 from optparse import Values |
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13 from typing import Any, List |
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14 |
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15 |
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16 logger = logging.getLogger(__name__) |
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17 |
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18 |
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19 class CacheCommand(Command): |
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20 """ |
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21 Inspect and manage pip's wheel cache. |
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22 |
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23 Subcommands: |
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24 |
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25 - dir: Show the cache directory. |
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26 - info: Show information about the cache. |
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27 - list: List filenames of packages stored in the cache. |
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28 - remove: Remove one or more package from the cache. |
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29 - purge: Remove all items from the cache. |
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30 |
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31 ``<pattern>`` can be a glob expression or a package name. |
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32 """ |
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33 |
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34 ignore_require_venv = True |
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35 usage = """ |
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36 %prog dir |
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37 %prog info |
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38 %prog list [<pattern>] [--format=[human, abspath]] |
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39 %prog remove <pattern> |
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40 %prog purge |
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41 """ |
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42 |
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43 def add_options(self): |
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44 # type: () -> None |
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45 |
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46 self.cmd_opts.add_option( |
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47 '--format', |
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48 action='store', |
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49 dest='list_format', |
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50 default="human", |
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51 choices=('human', 'abspath'), |
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52 help="Select the output format among: human (default) or abspath" |
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53 ) |
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54 |
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55 self.parser.insert_option_group(0, self.cmd_opts) |
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56 |
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57 def run(self, options, args): |
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58 # type: (Values, List[Any]) -> int |
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59 handlers = { |
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60 "dir": self.get_cache_dir, |
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61 "info": self.get_cache_info, |
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62 "list": self.list_cache_items, |
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63 "remove": self.remove_cache_items, |
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64 "purge": self.purge_cache, |
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65 } |
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66 |
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67 if not options.cache_dir: |
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68 logger.error("pip cache commands can not " |
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69 "function since cache is disabled.") |
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70 return ERROR |
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71 |
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72 # Determine action |
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73 if not args or args[0] not in handlers: |
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74 logger.error( |
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75 "Need an action (%s) to perform.", |
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76 ", ".join(sorted(handlers)), |
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77 ) |
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78 return ERROR |
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79 |
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80 action = args[0] |
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81 |
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82 # Error handling happens here, not in the action-handlers. |
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83 try: |
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84 handlers[action](options, args[1:]) |
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85 except PipError as e: |
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86 logger.error(e.args[0]) |
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87 return ERROR |
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88 |
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89 return SUCCESS |
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90 |
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91 def get_cache_dir(self, options, args): |
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92 # type: (Values, List[Any]) -> None |
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93 if args: |
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94 raise CommandError('Too many arguments') |
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95 |
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96 logger.info(options.cache_dir) |
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97 |
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98 def get_cache_info(self, options, args): |
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99 # type: (Values, List[Any]) -> None |
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100 if args: |
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101 raise CommandError('Too many arguments') |
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102 |
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103 num_http_files = len(self._find_http_files(options)) |
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104 num_packages = len(self._find_wheels(options, '*')) |
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105 |
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106 http_cache_location = self._cache_dir(options, 'http') |
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107 wheels_cache_location = self._cache_dir(options, 'wheels') |
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108 http_cache_size = filesystem.format_directory_size(http_cache_location) |
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109 wheels_cache_size = filesystem.format_directory_size( |
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110 wheels_cache_location |
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111 ) |
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112 |
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113 message = textwrap.dedent(""" |
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114 Package index page cache location: {http_cache_location} |
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115 Package index page cache size: {http_cache_size} |
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116 Number of HTTP files: {num_http_files} |
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117 Wheels location: {wheels_cache_location} |
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118 Wheels size: {wheels_cache_size} |
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119 Number of wheels: {package_count} |
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120 """).format( |
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121 http_cache_location=http_cache_location, |
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122 http_cache_size=http_cache_size, |
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123 num_http_files=num_http_files, |
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124 wheels_cache_location=wheels_cache_location, |
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125 package_count=num_packages, |
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126 wheels_cache_size=wheels_cache_size, |
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127 ).strip() |
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128 |
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129 logger.info(message) |
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130 |
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131 def list_cache_items(self, options, args): |
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132 # type: (Values, List[Any]) -> None |
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133 if len(args) > 1: |
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134 raise CommandError('Too many arguments') |
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135 |
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136 if args: |
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137 pattern = args[0] |
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138 else: |
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139 pattern = '*' |
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140 |
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141 files = self._find_wheels(options, pattern) |
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142 if options.list_format == 'human': |
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143 self.format_for_human(files) |
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144 else: |
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145 self.format_for_abspath(files) |
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146 |
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147 def format_for_human(self, files): |
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148 # type: (List[str]) -> None |
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149 if not files: |
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150 logger.info('Nothing cached.') |
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151 return |
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152 |
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153 results = [] |
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154 for filename in files: |
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155 wheel = os.path.basename(filename) |
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156 size = filesystem.format_file_size(filename) |
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157 results.append(f' - {wheel} ({size})') |
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158 logger.info('Cache contents:\n') |
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159 logger.info('\n'.join(sorted(results))) |
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160 |
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161 def format_for_abspath(self, files): |
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162 # type: (List[str]) -> None |
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163 if not files: |
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164 return |
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165 |
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166 results = [] |
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167 for filename in files: |
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168 results.append(filename) |
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169 |
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170 logger.info('\n'.join(sorted(results))) |
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171 |
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172 def remove_cache_items(self, options, args): |
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173 # type: (Values, List[Any]) -> None |
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174 if len(args) > 1: |
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175 raise CommandError('Too many arguments') |
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176 |
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177 if not args: |
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178 raise CommandError('Please provide a pattern') |
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179 |
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180 files = self._find_wheels(options, args[0]) |
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181 |
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182 # Only fetch http files if no specific pattern given |
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183 if args[0] == '*': |
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184 files += self._find_http_files(options) |
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185 |
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186 if not files: |
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187 raise CommandError('No matching packages') |
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188 |
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189 for filename in files: |
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190 os.unlink(filename) |
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191 logger.debug('Removed %s', filename) |
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192 logger.info('Files removed: %s', len(files)) |
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193 |
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194 def purge_cache(self, options, args): |
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195 # type: (Values, List[Any]) -> None |
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196 if args: |
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197 raise CommandError('Too many arguments') |
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198 |
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199 return self.remove_cache_items(options, ['*']) |
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200 |
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201 def _cache_dir(self, options, subdir): |
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202 # type: (Values, str) -> str |
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203 return os.path.join(options.cache_dir, subdir) |
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204 |
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205 def _find_http_files(self, options): |
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206 # type: (Values) -> List[str] |
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207 http_dir = self._cache_dir(options, 'http') |
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208 return filesystem.find_files(http_dir, '*') |
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209 |
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210 def _find_wheels(self, options, pattern): |
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211 # type: (Values, str) -> List[str] |
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212 wheel_dir = self._cache_dir(options, 'wheels') |
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213 |
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214 # The wheel filename format, as specified in PEP 427, is: |
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215 # {distribution}-{version}(-{build})?-{python}-{abi}-{platform}.whl |
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216 # |
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217 # Additionally, non-alphanumeric values in the distribution are |
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218 # normalized to underscores (_), meaning hyphens can never occur |
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219 # before `-{version}`. |
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220 # |
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221 # Given that information: |
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222 # - If the pattern we're given contains a hyphen (-), the user is |
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223 # providing at least the version. Thus, we can just append `*.whl` |
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224 # to match the rest of it. |
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225 # - If the pattern we're given doesn't contain a hyphen (-), the |
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226 # user is only providing the name. Thus, we append `-*.whl` to |
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227 # match the hyphen before the version, followed by anything else. |
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228 # |
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229 # PEP 427: https://www.python.org/dev/peps/pep-0427/ |
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230 pattern = pattern + ("*.whl" if "-" in pattern else "-*.whl") |
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231 |
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232 return filesystem.find_files(wheel_dir, pattern) |