mirror of
https://github.com/python/cpython.git
synced 2025-10-31 13:41:24 +00:00
393 lines
15 KiB
Python
393 lines
15 KiB
Python
"""distutils.cmd
|
|
|
|
Provides the Command class, the base class for the command classes
|
|
in the distutils.command package.
|
|
"""
|
|
|
|
# created 2000/04/03, Greg Ward
|
|
# (extricated from core.py; actually dates back to the beginning)
|
|
|
|
__revision__ = "$Id$"
|
|
|
|
import sys, os, string
|
|
from types import *
|
|
from distutils.errors import *
|
|
from distutils import util
|
|
|
|
|
|
class Command:
|
|
"""Abstract base class for defining command classes, the "worker bees"
|
|
of the Distutils. A useful analogy for command classes is to think of
|
|
them as subroutines with local variables called "options". The options
|
|
are "declared" in 'initialize_options()' and "defined" (given their
|
|
final values, aka "finalized") in 'finalize_options()', both of which
|
|
must be defined by every command class. The distinction between the
|
|
two is necessary because option values might come from the outside
|
|
world (command line, config file, ...), and any options dependent on
|
|
other options must be computed *after* these outside influences have
|
|
been processed -- hence 'finalize_options()'. The "body" of the
|
|
subroutine, where it does all its work based on the values of its
|
|
options, is the 'run()' method, which must also be implemented by every
|
|
command class.
|
|
"""
|
|
|
|
# -- Creation/initialization methods -------------------------------
|
|
|
|
def __init__ (self, dist):
|
|
"""Create and initialize a new Command object. Most importantly,
|
|
invokes the 'initialize_options()' method, which is the real
|
|
initializer and depends on the actual command being
|
|
instantiated.
|
|
"""
|
|
# late import because of mutual dependence between these classes
|
|
from distutils.dist import Distribution
|
|
|
|
if not isinstance (dist, Distribution):
|
|
raise TypeError, "dist must be a Distribution instance"
|
|
if self.__class__ is Command:
|
|
raise RuntimeError, "Command is an abstract class"
|
|
|
|
self.distribution = dist
|
|
self.initialize_options ()
|
|
|
|
# Per-command versions of the global flags, so that the user can
|
|
# customize Distutils' behaviour command-by-command and let some
|
|
# commands fallback on the Distribution's behaviour. None means
|
|
# "not defined, check self.distribution's copy", while 0 or 1 mean
|
|
# false and true (duh). Note that this means figuring out the real
|
|
# value of each flag is a touch complicatd -- hence "self.verbose"
|
|
# (etc.) will be handled by __getattr__, below.
|
|
self._verbose = None
|
|
self._dry_run = None
|
|
|
|
# Some commands define a 'self.force' option to ignore file
|
|
# timestamps, but methods defined *here* assume that
|
|
# 'self.force' exists for all commands. So define it here
|
|
# just to be safe.
|
|
self.force = None
|
|
|
|
# The 'help' flag is just used for command-line parsing, so
|
|
# none of that complicated bureaucracy is needed.
|
|
self.help = 0
|
|
|
|
# 'finalized' records whether or not 'finalize_options()' has been
|
|
# called. 'finalize_options()' itself should not pay attention to
|
|
# this flag: it is the business of 'ensure_finalized()', which
|
|
# always calls 'finalize_options()', to respect/update it.
|
|
self.finalized = 0
|
|
|
|
# __init__ ()
|
|
|
|
|
|
def __getattr__ (self, attr):
|
|
if attr in ('verbose', 'dry_run'):
|
|
myval = getattr (self, "_" + attr)
|
|
if myval is None:
|
|
return getattr (self.distribution, attr)
|
|
else:
|
|
return myval
|
|
else:
|
|
raise AttributeError, attr
|
|
|
|
|
|
def ensure_finalized (self):
|
|
if not self.finalized:
|
|
self.finalize_options ()
|
|
self.finalized = 1
|
|
|
|
|
|
# Subclasses must define:
|
|
# initialize_options()
|
|
# provide default values for all options; may be customized by
|
|
# setup script, by options from config file(s), or by command-line
|
|
# options
|
|
# finalize_options()
|
|
# decide on the final values for all options; this is called
|
|
# after all possible intervention from the outside world
|
|
# (command-line, option file, etc.) has been processed
|
|
# run()
|
|
# run the command: do whatever it is we're here to do,
|
|
# controlled by the command's various option values
|
|
|
|
def initialize_options (self):
|
|
"""Set default values for all the options that this command
|
|
supports. Note that these defaults may be overridden by other
|
|
commands, by the setup script, by config files, or by the
|
|
command-line. Thus, this is not the place to code dependencies
|
|
between options; generally, 'initialize_options()' implementations
|
|
are just a bunch of "self.foo = None" assignments.
|
|
|
|
This method must be implemented by all command classes.
|
|
"""
|
|
raise RuntimeError, \
|
|
"abstract method -- subclass %s must override" % self.__class__
|
|
|
|
def finalize_options (self):
|
|
"""Set final values for all the options that this command supports.
|
|
This is always called as late as possible, ie. after any option
|
|
assignments from the command-line or from other commands have been
|
|
done. Thus, this is the place to to code option dependencies: if
|
|
'foo' depends on 'bar', then it is safe to set 'foo' from 'bar' as
|
|
long as 'foo' still has the same value it was assigned in
|
|
'initialize_options()'.
|
|
|
|
This method must be implemented by all command classes.
|
|
"""
|
|
raise RuntimeError, \
|
|
"abstract method -- subclass %s must override" % self.__class__
|
|
|
|
|
|
def dump_options (self, header=None, indent=""):
|
|
from distutils.fancy_getopt import longopt_xlate
|
|
if header is None:
|
|
header = "command options for '%s':" % self.get_command_name()
|
|
print indent + header
|
|
indent = indent + " "
|
|
for (option, _, _) in self.user_options:
|
|
option = string.translate(option, longopt_xlate)
|
|
if option[-1] == "=":
|
|
option = option[:-1]
|
|
value = getattr(self, option)
|
|
print indent + "%s = %s" % (option, value)
|
|
|
|
|
|
def run (self):
|
|
"""A command's raison d'etre: carry out the action it exists to
|
|
perform, controlled by the options initialized in
|
|
'initialize_options()', customized by other commands, the setup
|
|
script, the command-line, and config files, and finalized in
|
|
'finalize_options()'. All terminal output and filesystem
|
|
interaction should be done by 'run()'.
|
|
|
|
This method must be implemented by all command classes.
|
|
"""
|
|
|
|
raise RuntimeError, \
|
|
"abstract method -- subclass %s must override" % self.__class__
|
|
|
|
def announce (self, msg, level=1):
|
|
"""If the current verbosity level is of greater than or equal to
|
|
'level' print 'msg' to stdout.
|
|
"""
|
|
if self.verbose >= level:
|
|
print msg
|
|
|
|
|
|
# -- Convenience methods for commands ------------------------------
|
|
|
|
def get_command_name (self):
|
|
if hasattr (self, 'command_name'):
|
|
return self.command_name
|
|
else:
|
|
return self.__class__.__name__
|
|
|
|
|
|
def set_undefined_options (self, src_cmd, *option_pairs):
|
|
"""Set the values of any "undefined" options from corresponding
|
|
option values in some other command object. "Undefined" here means
|
|
"is None", which is the convention used to indicate that an option
|
|
has not been changed between 'initialize_options()' and
|
|
'finalize_options()'. Usually called from 'finalize_options()' for
|
|
options that depend on some other command rather than another
|
|
option of the same command. 'src_cmd' is the other command from
|
|
which option values will be taken (a command object will be created
|
|
for it if necessary); the remaining arguments are
|
|
'(src_option,dst_option)' tuples which mean "take the value of
|
|
'src_option' in the 'src_cmd' command object, and copy it to
|
|
'dst_option' in the current command object".
|
|
"""
|
|
|
|
# Option_pairs: list of (src_option, dst_option) tuples
|
|
|
|
src_cmd_obj = self.distribution.get_command_obj (src_cmd)
|
|
src_cmd_obj.ensure_finalized ()
|
|
for (src_option, dst_option) in option_pairs:
|
|
if getattr (self, dst_option) is None:
|
|
setattr (self, dst_option,
|
|
getattr (src_cmd_obj, src_option))
|
|
|
|
|
|
def get_finalized_command (self, command, create=1):
|
|
"""Wrapper around Distribution's 'get_command_obj()' method: find
|
|
(create if necessary and 'create' is true) the command object for
|
|
'command', call its 'ensure_finalized()' method, and return the
|
|
finalized command object.
|
|
"""
|
|
cmd_obj = self.distribution.get_command_obj (command, create)
|
|
cmd_obj.ensure_finalized ()
|
|
return cmd_obj
|
|
|
|
# XXX rename to 'get_reinitialized_command()'? (should do the
|
|
# same in dist.py, if so)
|
|
def reinitialize_command (self, command):
|
|
return self.distribution.reinitialize_command(command)
|
|
|
|
def run_command (self, command):
|
|
"""Run some other command: uses the 'run_command()' method of
|
|
Distribution, which creates and finalizes the command object if
|
|
necessary and then invokes its 'run()' method.
|
|
"""
|
|
self.distribution.run_command (command)
|
|
|
|
|
|
# -- External world manipulation -----------------------------------
|
|
|
|
def warn (self, msg):
|
|
sys.stderr.write ("warning: %s: %s\n" %
|
|
(self.get_command_name(), msg))
|
|
|
|
|
|
def execute (self, func, args, msg=None, level=1):
|
|
"""Perform some action that affects the outside world (eg. by
|
|
writing to the filesystem). Such actions are special because they
|
|
should be disabled by the "dry run" flag, and should announce
|
|
themselves if the current verbosity level is high enough. This
|
|
method takes care of all that bureaucracy for you; all you have to
|
|
do is supply the funtion to call and an argument tuple for it (to
|
|
embody the "external action" being performed), a message to print
|
|
if the verbosity level is high enough, and an optional verbosity
|
|
threshold.
|
|
"""
|
|
|
|
# Generate a message if we weren't passed one
|
|
if msg is None:
|
|
msg = "%s %s" % (func.__name__, `args`)
|
|
if msg[-2:] == ',)': # correct for singleton tuple
|
|
msg = msg[0:-2] + ')'
|
|
|
|
# Print it if verbosity level is high enough
|
|
self.announce (msg, level)
|
|
|
|
# And do it, as long as we're not in dry-run mode
|
|
if not self.dry_run:
|
|
apply (func, args)
|
|
|
|
# execute()
|
|
|
|
|
|
def mkpath (self, name, mode=0777):
|
|
util.mkpath (name, mode,
|
|
self.verbose, self.dry_run)
|
|
|
|
|
|
def copy_file (self, infile, outfile,
|
|
preserve_mode=1, preserve_times=1, link=None, level=1):
|
|
"""Copy a file respecting verbose, dry-run and force flags. (The
|
|
former two default to whatever is in the Distribution object, and
|
|
the latter defaults to false for commands that don't define it.)"""
|
|
|
|
return util.copy_file (infile, outfile,
|
|
preserve_mode, preserve_times,
|
|
not self.force,
|
|
link,
|
|
self.verbose >= level,
|
|
self.dry_run)
|
|
|
|
|
|
def copy_tree (self, infile, outfile,
|
|
preserve_mode=1, preserve_times=1, preserve_symlinks=0,
|
|
level=1):
|
|
"""Copy an entire directory tree respecting verbose, dry-run,
|
|
and force flags.
|
|
"""
|
|
return util.copy_tree (infile, outfile,
|
|
preserve_mode,preserve_times,preserve_symlinks,
|
|
not self.force,
|
|
self.verbose >= level,
|
|
self.dry_run)
|
|
|
|
|
|
def move_file (self, src, dst, level=1):
|
|
"""Move a file respecting verbose and dry-run flags."""
|
|
return util.move_file (src, dst,
|
|
self.verbose >= level,
|
|
self.dry_run)
|
|
|
|
|
|
def spawn (self, cmd, search_path=1, level=1):
|
|
"""Spawn an external command respecting verbose and dry-run flags."""
|
|
from distutils.spawn import spawn
|
|
spawn (cmd, search_path,
|
|
self.verbose >= level,
|
|
self.dry_run)
|
|
|
|
|
|
def make_archive (self, base_name, format,
|
|
root_dir=None, base_dir=None):
|
|
return util.make_archive (base_name, format, root_dir, base_dir,
|
|
self.verbose, self.dry_run)
|
|
|
|
|
|
def make_file (self, infiles, outfile, func, args,
|
|
exec_msg=None, skip_msg=None, level=1):
|
|
"""Special case of 'execute()' for operations that process one or
|
|
more input files and generate one output file. Works just like
|
|
'execute()', except the operation is skipped and a different
|
|
message printed if 'outfile' already exists and is newer than all
|
|
files listed in 'infiles'. If the command defined 'self.force',
|
|
and it is true, then the command is unconditionally run -- does no
|
|
timestamp checks.
|
|
"""
|
|
if exec_msg is None:
|
|
exec_msg = "generating %s from %s" % \
|
|
(outfile, string.join (infiles, ', '))
|
|
if skip_msg is None:
|
|
skip_msg = "skipping %s (inputs unchanged)" % outfile
|
|
|
|
|
|
# Allow 'infiles' to be a single string
|
|
if type (infiles) is StringType:
|
|
infiles = (infiles,)
|
|
elif type (infiles) not in (ListType, TupleType):
|
|
raise TypeError, \
|
|
"'infiles' must be a string, or a list or tuple of strings"
|
|
|
|
# If 'outfile' must be regenerated (either because it doesn't
|
|
# exist, is out-of-date, or the 'force' flag is true) then
|
|
# perform the action that presumably regenerates it
|
|
if self.force or util.newer_group (infiles, outfile):
|
|
self.execute (func, args, exec_msg, level)
|
|
|
|
# Otherwise, print the "skip" message
|
|
else:
|
|
self.announce (skip_msg, level)
|
|
|
|
# make_file ()
|
|
|
|
# class Command
|
|
|
|
|
|
# XXX 'install_misc' class not currently used -- it was the base class for
|
|
# both 'install_scripts' and 'install_data', but they outgrew it. It might
|
|
# still be useful for 'install_headers', though, so I'm keeping it around
|
|
# for the time being.
|
|
|
|
class install_misc (Command):
|
|
"""Common base class for installing some files in a subdirectory.
|
|
Currently used by install_data and install_scripts.
|
|
"""
|
|
|
|
user_options = [('install-dir=', 'd', "directory to install the files to")]
|
|
|
|
def initialize_options (self):
|
|
self.install_dir = None
|
|
self.outfiles = []
|
|
|
|
def _install_dir_from (self, dirname):
|
|
self.set_undefined_options('install', (dirname, 'install_dir'))
|
|
|
|
def _copy_files (self, filelist):
|
|
self.outfiles = []
|
|
if not filelist:
|
|
return
|
|
self.mkpath(self.install_dir)
|
|
for f in filelist:
|
|
self.copy_file(f, self.install_dir)
|
|
self.outfiles.append(os.path.join(self.install_dir, f))
|
|
|
|
def get_outputs (self):
|
|
return self.outfiles
|
|
|
|
|
|
if __name__ == "__main__":
|
|
print "ok"
|