mirror of https://github.com/python/cpython.git
119 lines
4.8 KiB
Python
119 lines
4.8 KiB
Python
"""distutils.core
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The only module that needs to be imported to use the Distutils; provides
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the 'setup' function (which is to be called from the setup script). Also
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indirectly provides the Distribution and Command classes, although they are
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really defined in distutils.dist and distutils.cmd."""
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# created 1999/03/01, Greg Ward
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__revision__ = "$Id$"
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import sys, os
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from types import *
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from distutils.errors import *
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from distutils.dist import Distribution
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from distutils.cmd import Command
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# This is a barebones help message generated displayed when the user
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# runs the setup script with no arguments at all. More useful help
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# is generated with various --help options: global help, list commands,
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# and per-command help.
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usage = """\
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usage: %s [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
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or: %s --help [cmd1 cmd2 ...]
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or: %s --help-commands
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or: %s cmd --help
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""" % ((os.path.basename(sys.argv[0]),) * 4)
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def setup (**attrs):
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"""The gateway to the Distutils: do everything your setup script
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needs to do, in a highly flexible and user-driven way. Briefly:
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create a Distribution instance; parse the command-line, creating
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and customizing instances of the command class for each command
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found on the command-line; run each of those commands.
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The Distribution instance might be an instance of a class
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supplied via the 'distclass' keyword argument to 'setup'; if no
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such class is supplied, then the 'Distribution' class (also in
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this module) is instantiated. All other arguments to 'setup'
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(except for 'cmdclass') are used to set attributes of the
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Distribution instance.
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The 'cmdclass' argument, if supplied, is a dictionary mapping
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command names to command classes. Each command encountered on
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the command line will be turned into a command class, which is in
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turn instantiated; any class found in 'cmdclass' is used in place
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of the default, which is (for command 'foo_bar') class 'foo_bar'
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in module 'distutils.command.foo_bar'. The command class must
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provide a 'user_options' attribute which is a list of option
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specifiers for 'distutils.fancy_getopt'. Any command-line
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options between the current and the next command are used to set
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attributes of the current command object.
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When the entire command-line has been successfully parsed, calls
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the 'run()' method on each command object in turn. This method
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will be driven entirely by the Distribution object (which each
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command object has a reference to, thanks to its constructor),
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and the command-specific options that became attributes of each
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command object."""
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from pprint import pprint # for debugging output
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# Determine the distribution class -- either caller-supplied or
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# our Distribution (see below).
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klass = attrs.get ('distclass')
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if klass:
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del attrs['distclass']
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else:
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klass = Distribution
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# Create the Distribution instance, using the remaining arguments
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# (ie. everything except distclass) to initialize it
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dist = klass (attrs)
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# Find and parse the config file(s): they will override options from
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# the setup script, but be overridden by the command line.
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dist.parse_config_files()
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print "options (after parsing config files):"
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pprint (dist.command_options)
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# Parse the command line; any command-line errors are the end user's
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# fault, so turn them into SystemExit to suppress tracebacks.
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try:
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ok = dist.parse_command_line (sys.argv[1:])
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except DistutilsArgError, msg:
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sys.stderr.write (usage + "\n")
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raise SystemExit, "error: %s" % msg
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print "options (after parsing command line):"
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pprint (dist.command_options)
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# And finally, run all the commands found on the command line.
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if ok:
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try:
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dist.run_commands ()
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except KeyboardInterrupt:
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raise SystemExit, "interrupted"
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except (IOError, os.error), exc:
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# check for Python 1.5.2-style {IO,OS}Error exception objects
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if hasattr (exc, 'filename') and hasattr (exc, 'strerror'):
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if exc.filename:
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raise SystemExit, \
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"error: %s: %s" % (exc.filename, exc.strerror)
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else:
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# two-argument functions in posix module don't
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# include the filename in the exception object!
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raise SystemExit, \
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"error: %s" % exc.strerror
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else:
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raise SystemExit, "error: " + str(exc[-1])
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except (DistutilsExecError,
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DistutilsFileError,
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DistutilsOptionError), msg:
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raise SystemExit, "error: " + str(msg)
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# setup ()
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