mirror of
https://github.com/python/cpython.git
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f8361623f0
- Don't use keyword arguments for debug_override; I find it more readable to have a comment explaining that True makes pyc and False pyo than to write out the non-obvious (when you haven’t read the doc) argument name - Move duplicate code from build_py and install_lib into cmd - Remove obsolete verbose argument of util.byte_compile - Remove obsolete passing of -O/-OO to the Python process spawned by util.byte_compile (I’ll remove the whole spawning later, after I write more tests to check the contents of pyc and pyo files; now that byte_compile does not depend on the value of __debug__ in the calling Python, we can call py_compile or compileall directly)
188 lines
7.1 KiB
Python
188 lines
7.1 KiB
Python
"""Install all modules (extensions and pure Python)."""
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import os
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import imp
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from packaging import logger
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from packaging.command.cmd import Command
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from packaging.errors import PackagingOptionError
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# Extension for Python source files.
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# XXX dead code? most of the codebase checks for literal '.py'
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if hasattr(os, 'extsep'):
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PYTHON_SOURCE_EXTENSION = os.extsep + "py"
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else:
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PYTHON_SOURCE_EXTENSION = ".py"
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class install_lib(Command):
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description = "install all modules (extensions and pure Python)"
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# The options for controlling byte compilation are two independent sets:
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# 'compile' is strictly boolean, and only decides whether to
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# generate .pyc files. 'optimize' is three-way (0, 1, or 2), and
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# decides both whether to generate .pyo files and what level of
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# optimization to use.
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user_options = [
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('install-dir=', 'd', "directory to install to"),
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('build-dir=', 'b', "build directory (where to install from)"),
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('force', 'f', "force installation (overwrite existing files)"),
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('compile', 'c', "compile .py to .pyc [default]"),
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('no-compile', None, "don't compile .py files"),
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('optimize=', 'O',
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"also compile with optimization: -O1 for \"python -O\", "
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"-O2 for \"python -OO\", and -O0 to disable [default: -O0]"),
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('skip-build', None, "skip the build steps"),
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]
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boolean_options = ['force', 'compile', 'skip-build']
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negative_opt = {'no-compile': 'compile'}
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def initialize_options(self):
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# let the 'install_dist' command dictate our installation directory
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self.install_dir = None
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self.build_dir = None
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self.force = False
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self.compile = None
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self.optimize = None
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self.skip_build = None
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def finalize_options(self):
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# Get all the information we need to install pure Python modules
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# from the umbrella 'install_dist' command -- build (source) directory,
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# install (target) directory, and whether to compile .py files.
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self.set_undefined_options('install_dist',
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('build_lib', 'build_dir'),
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('install_lib', 'install_dir'),
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'force', 'compile', 'optimize',
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'skip_build')
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if self.compile is None:
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self.compile = True
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if self.optimize is None:
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self.optimize = 0
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if not isinstance(self.optimize, int):
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try:
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self.optimize = int(self.optimize)
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if self.optimize not in (0, 1, 2):
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raise AssertionError
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except (ValueError, AssertionError):
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raise PackagingOptionError("optimize must be 0, 1, or 2")
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def run(self):
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# Make sure we have built everything we need first
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self.build()
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# Install everything: simply dump the entire contents of the build
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# directory to the installation directory (that's the beauty of
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# having a build directory!)
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outfiles = self.install()
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# (Optionally) compile .py to .pyc and/or .pyo
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if outfiles is not None and self.distribution.has_pure_modules():
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# XXX comment from distutils: "This [prefix stripping] is far from
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# complete, but it should at least generate usable bytecode in RPM
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# distributions." -> need to find exact requirements for
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# byte-compiled files and fix it
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install_root = self.get_finalized_command('install_dist').root
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self.byte_compile(outfiles, prefix=install_root)
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# -- Top-level worker functions ------------------------------------
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# (called from 'run()')
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def build(self):
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if not self.skip_build:
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if self.distribution.has_pure_modules():
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self.run_command('build_py')
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if self.distribution.has_ext_modules():
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self.run_command('build_ext')
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def install(self):
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if os.path.isdir(self.build_dir):
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outfiles = self.copy_tree(self.build_dir, self.install_dir)
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else:
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logger.warning(
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'%s: %r does not exist -- no Python modules to install',
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self.get_command_name(), self.build_dir)
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return
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return outfiles
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# -- Utility methods -----------------------------------------------
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def _mutate_outputs(self, has_any, build_cmd, cmd_option, output_dir):
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if not has_any:
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return []
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build_cmd = self.get_finalized_command(build_cmd)
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build_files = build_cmd.get_outputs()
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build_dir = getattr(build_cmd, cmd_option)
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prefix_len = len(build_dir) + len(os.sep)
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outputs = []
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for file in build_files:
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outputs.append(os.path.join(output_dir, file[prefix_len:]))
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return outputs
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def _bytecode_filenames(self, py_filenames):
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bytecode_files = []
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for py_file in py_filenames:
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# Since build_py handles package data installation, the
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# list of outputs can contain more than just .py files.
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# Make sure we only report bytecode for the .py files.
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ext = os.path.splitext(os.path.normcase(py_file))[1]
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if ext != PYTHON_SOURCE_EXTENSION:
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continue
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if self.compile:
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bytecode_files.append(imp.cache_from_source(py_file, True))
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if self.optimize:
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bytecode_files.append(imp.cache_from_source(py_file, False))
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return bytecode_files
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# -- External interface --------------------------------------------
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# (called by outsiders)
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def get_outputs(self):
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"""Return the list of files that would be installed if this command
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were actually run. Not affected by the "dry-run" flag or whether
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modules have actually been built yet.
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"""
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pure_outputs = \
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self._mutate_outputs(self.distribution.has_pure_modules(),
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'build_py', 'build_lib',
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self.install_dir)
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if self.compile:
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bytecode_outputs = self._bytecode_filenames(pure_outputs)
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else:
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bytecode_outputs = []
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ext_outputs = \
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self._mutate_outputs(self.distribution.has_ext_modules(),
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'build_ext', 'build_lib',
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self.install_dir)
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return pure_outputs + bytecode_outputs + ext_outputs
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def get_inputs(self):
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"""Get the list of files that are input to this command, ie. the
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files that get installed as they are named in the build tree.
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The files in this list correspond one-to-one to the output
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filenames returned by 'get_outputs()'.
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"""
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inputs = []
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if self.distribution.has_pure_modules():
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build_py = self.get_finalized_command('build_py')
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inputs.extend(build_py.get_outputs())
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if self.distribution.has_ext_modules():
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build_ext = self.get_finalized_command('build_ext')
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inputs.extend(build_ext.get_outputs())
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return inputs
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