Mercurial > cpython-lru_cache-weakref

annotate Lib/packaging/command/install_lib.py @ 70626:aa07c1237f4e

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(Merge 3.2) Issue #12016: Reindent decoders of HK and JP codecs
author Victor Stinner <victor.stinner@haypocalc.com>
date Fri, 03 Jun 2011 23:34:32 +0200
parents 1a31c3be88b1
children 28e4cd8fd864
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """Install all modules (extensions and pure Python)."""
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2
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3 import os
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4 import sys
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5 import logging
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6
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7 from packaging import logger
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8 from packaging.command.cmd import Command
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9 from packaging.errors import PackagingOptionError
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10
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11
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12 # Extension for Python source files.
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13 if hasattr(os, 'extsep'):
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14 PYTHON_SOURCE_EXTENSION = os.extsep + "py"
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15 else:
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16 PYTHON_SOURCE_EXTENSION = ".py"
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17
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18 class install_lib(Command):
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19
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20 description = "install all modules (extensions and pure Python)"
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21
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22 # The byte-compilation options are a tad confusing. Here are the
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23 # possible scenarios:
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24 # 1) no compilation at all (--no-compile --no-optimize)
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25 # 2) compile .pyc only (--compile --no-optimize; default)
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26 # 3) compile .pyc and "level 1" .pyo (--compile --optimize)
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27 # 4) compile "level 1" .pyo only (--no-compile --optimize)
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28 # 5) compile .pyc and "level 2" .pyo (--compile --optimize-more)
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29 # 6) compile "level 2" .pyo only (--no-compile --optimize-more)
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30 #
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31 # The UI for this is two option, 'compile' and 'optimize'.
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32 # 'compile' is strictly boolean, and only decides whether to
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33 # generate .pyc files. 'optimize' is three-way (0, 1, or 2), and
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34 # decides both whether to generate .pyo files and what level of
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35 # optimization to use.
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36
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37 user_options = [
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38 ('install-dir=', 'd', "directory to install to"),
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39 ('build-dir=','b', "build directory (where to install from)"),
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40 ('force', 'f', "force installation (overwrite existing files)"),
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41 ('compile', 'c', "compile .py to .pyc [default]"),
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42 ('no-compile', None, "don't compile .py files"),
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43 ('optimize=', 'O',
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44 "also compile with optimization: -O1 for \"python -O\", "
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45 "-O2 for \"python -OO\", and -O0 to disable [default: -O0]"),
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46 ('skip-build', None, "skip the build steps"),
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47 ]
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48
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49 boolean_options = ['force', 'compile', 'skip-build']
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50 negative_opt = {'no-compile' : 'compile'}
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51
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52 def initialize_options(self):
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53 # let the 'install_dist' command dictate our installation directory
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54 self.install_dir = None
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55 self.build_dir = None
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56 self.force = False
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57 self.compile = None
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58 self.optimize = None
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59 self.skip_build = None
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60
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61 def finalize_options(self):
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62 # Get all the information we need to install pure Python modules
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63 # from the umbrella 'install_dist' command -- build (source) directory,
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64 # install (target) directory, and whether to compile .py files.
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65 self.set_undefined_options('install_dist',
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66 ('build_lib', 'build_dir'),
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67 ('install_lib', 'install_dir'),
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68 'force', 'compile', 'optimize', 'skip_build')
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69
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70 if self.compile is None:
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71 self.compile = True
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72 if self.optimize is None:
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73 self.optimize = 0
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74
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75 if not isinstance(self.optimize, int):
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76 try:
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77 self.optimize = int(self.optimize)
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78 if self.optimize not in (0, 1, 2):
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79 raise AssertionError
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80 except (ValueError, AssertionError):
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81 raise PackagingOptionError("optimize must be 0, 1, or 2")
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82
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83 def run(self):
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84 # Make sure we have built everything we need first
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85 self.build()
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86
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87 # Install everything: simply dump the entire contents of the build
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88 # directory to the installation directory (that's the beauty of
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89 # having a build directory!)
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90 outfiles = self.install()
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91
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92 # (Optionally) compile .py to .pyc
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93 if outfiles is not None and self.distribution.has_pure_modules():
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94 self.byte_compile(outfiles)
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95
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96 # -- Top-level worker functions ------------------------------------
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97 # (called from 'run()')
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98
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99 def build(self):
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100 if not self.skip_build:
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101 if self.distribution.has_pure_modules():
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102 self.run_command('build_py')
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103 if self.distribution.has_ext_modules():
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104 self.run_command('build_ext')
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105
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106 def install(self):
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107 if os.path.isdir(self.build_dir):
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108 outfiles = self.copy_tree(self.build_dir, self.install_dir)
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109 else:
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110 logger.warning(
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111 '%s: %r does not exist -- no Python modules to install',
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112 self.get_command_name(), self.build_dir)
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113 return
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114 return outfiles
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115
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116 def byte_compile(self, files):
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117 if getattr(sys, 'dont_write_bytecode'):
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118 # XXX do we want this? because a Python runs without bytecode
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119 # doesn't mean that the *dists should not contain bytecode
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120 #--or does it?
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121 logger.warning('%s: byte-compiling is disabled, skipping.',
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122 self.get_command_name())
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123 return
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124
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125 from packaging.util import byte_compile
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126
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127 # Get the "--root" directory supplied to the "install_dist" command,
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128 # and use it as a prefix to strip off the purported filename
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129 # encoded in bytecode files. This is far from complete, but it
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130 # should at least generate usable bytecode in RPM distributions.
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131 install_root = self.get_finalized_command('install_dist').root
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132
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133 # Temporary kludge until we remove the verbose arguments and use
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134 # logging everywhere
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135 verbose = logger.getEffectiveLevel() >= logging.DEBUG
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136
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137 if self.compile:
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138 byte_compile(files, optimize=0,
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139 force=self.force, prefix=install_root,
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140 dry_run=self.dry_run)
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141 if self.optimize > 0:
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142 byte_compile(files, optimize=self.optimize,
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143 force=self.force, prefix=install_root,
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144 verbose=verbose,
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145 dry_run=self.dry_run)
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146
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147
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148 # -- Utility methods -----------------------------------------------
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149
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150 def _mutate_outputs(self, has_any, build_cmd, cmd_option, output_dir):
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151 if not has_any:
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152 return []
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153
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154 build_cmd = self.get_finalized_command(build_cmd)
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155 build_files = build_cmd.get_outputs()
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156 build_dir = getattr(build_cmd, cmd_option)
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157
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158 prefix_len = len(build_dir) + len(os.sep)
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159 outputs = []
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160 for file in build_files:
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161 outputs.append(os.path.join(output_dir, file[prefix_len:]))
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162
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163 return outputs
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164
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165 def _bytecode_filenames(self, py_filenames):
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166 bytecode_files = []
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167 for py_file in py_filenames:
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168 # Since build_py handles package data installation, the
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169 # list of outputs can contain more than just .py files.
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170 # Make sure we only report bytecode for the .py files.
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171 ext = os.path.splitext(os.path.normcase(py_file))[1]
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172 if ext != PYTHON_SOURCE_EXTENSION:
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173 continue
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174 if self.compile:
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175 bytecode_files.append(py_file + "c")
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176 if self.optimize > 0:
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177 bytecode_files.append(py_file + "o")
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178
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179 return bytecode_files
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180
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181
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182 # -- External interface --------------------------------------------
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183 # (called by outsiders)
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184
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185 def get_outputs(self):
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186 """Return the list of files that would be installed if this command
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187 were actually run. Not affected by the "dry-run" flag or whether
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188 modules have actually been built yet.
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189 """
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190 pure_outputs = \
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191 self._mutate_outputs(self.distribution.has_pure_modules(),
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192 'build_py', 'build_lib',
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193 self.install_dir)
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194 if self.compile:
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195 bytecode_outputs = self._bytecode_filenames(pure_outputs)
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196 else:
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197 bytecode_outputs = []
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198
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199 ext_outputs = \
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200 self._mutate_outputs(self.distribution.has_ext_modules(),
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201 'build_ext', 'build_lib',
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202 self.install_dir)
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203
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204 return pure_outputs + bytecode_outputs + ext_outputs
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205
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206 def get_inputs(self):
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207 """Get the list of files that are input to this command, ie. the
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208 files that get installed as they are named in the build tree.
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209 The files in this list correspond one-to-one to the output
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210 filenames returned by 'get_outputs()'.
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211 """
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212 inputs = []
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213
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214 if self.distribution.has_pure_modules():
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215 build_py = self.get_finalized_command('build_py')
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216 inputs.extend(build_py.get_outputs())
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217
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218 if self.distribution.has_ext_modules():
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219 build_ext = self.get_finalized_command('build_ext')
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220 inputs.extend(build_ext.get_outputs())
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221
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222 return inputs