758 lines
31 KiB
Python
758 lines
31 KiB
Python
"""distutils.core
|
|
|
|
The only module that needs to be imported to use the Distutils; provides
|
|
the 'setup' function (which must be called); the 'Distribution' class
|
|
(which may be subclassed if additional functionality is desired), and
|
|
the 'Command' class (which is used both internally by Distutils, and
|
|
may be subclassed by clients for still more flexibility)."""
|
|
|
|
# created 1999/03/01, Greg Ward
|
|
|
|
__rcsid__ = "$Id$"
|
|
|
|
import sys, os
|
|
import string, re
|
|
from distutils.errors import *
|
|
from distutils.fancy_getopt import fancy_getopt
|
|
from distutils import util
|
|
|
|
# This is not *quite* the same as a Python NAME; I don't allow leading
|
|
# underscores. The fact that they're very similar is no coincidence...
|
|
command_re = re.compile (r'^[a-zA-Z]([a-zA-Z0-9_]*)$')
|
|
|
|
# Defining this as a global is probably inadequate -- what about
|
|
# listing the available options (or even commands, which can vary
|
|
# quite late as well)
|
|
usage = '%s [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]' % sys.argv[0]
|
|
|
|
|
|
|
|
def setup (**attrs):
|
|
"""The gateway to the Distutils: do everything your setup script
|
|
needs to do, in a highly flexible and user-driven way. Briefly:
|
|
create a Distribution instance; parse the command-line, creating
|
|
and customizing instances of the command class for each command
|
|
found on the command-line; run each of those commands.
|
|
|
|
The Distribution instance might be an instance of a class
|
|
supplied via the 'distclass' keyword argument to 'setup'; if no
|
|
such class is supplied, then the 'Distribution' class (also in
|
|
this module) is instantiated. All other arguments to 'setup'
|
|
(except for 'cmdclass') are used to set attributes of the
|
|
Distribution instance.
|
|
|
|
The 'cmdclass' argument, if supplied, is a dictionary mapping
|
|
command names to command classes. Each command encountered on the
|
|
command line will be turned into a command class, which is in turn
|
|
instantiated; any class found in 'cmdclass' is used in place of the
|
|
default, which is (for command 'foo_bar') class 'FooBar' in module
|
|
'distutils.command.foo_bar'. The command object must provide an
|
|
'options' attribute which is a list of option specifiers for
|
|
'distutils.fancy_getopt'. Any command-line options between the
|
|
current and the next command are used to set attributes in the
|
|
current command object.
|
|
|
|
When the entire command-line has been successfully parsed, calls the
|
|
'run' method on each command object in turn. This method will be
|
|
driven entirely by the Distribution object (which each command
|
|
object has a reference to, thanks to its constructor), and the
|
|
command-specific options that became attributes of each command
|
|
object."""
|
|
|
|
# Determine the distribution class -- either caller-supplied or
|
|
# our Distribution (see below).
|
|
klass = attrs.get ('distclass')
|
|
if klass:
|
|
del attrs['distclass']
|
|
else:
|
|
klass = Distribution
|
|
|
|
# Create the Distribution instance, using the remaining arguments
|
|
# (ie. everything except distclass) to initialize it
|
|
dist = klass (attrs)
|
|
|
|
# Get it to parse the command line; any command-line errors are
|
|
# the end-users fault, so turn them into SystemExit to suppress
|
|
# tracebacks.
|
|
try:
|
|
dist.parse_command_line (sys.argv[1:])
|
|
except DistutilsArgError, msg:
|
|
raise SystemExit, msg
|
|
|
|
# And finally, run all the commands found on the command line.
|
|
dist.run_commands ()
|
|
|
|
# setup ()
|
|
|
|
|
|
class Distribution:
|
|
"""The core of the Distutils. Most of the work hiding behind
|
|
'setup' is really done within a Distribution instance, which
|
|
farms the work out to the Distutils commands specified on the
|
|
command line.
|
|
|
|
Clients will almost never instantiate Distribution directly,
|
|
unless the 'setup' function is totally inadequate to their needs.
|
|
However, it is conceivable that a client might wish to subclass
|
|
Distribution for some specialized purpose, and then pass the
|
|
subclass to 'setup' as the 'distclass' keyword argument. If so,
|
|
it is necessary to respect the expectations that 'setup' has of
|
|
Distribution: it must have a constructor and methods
|
|
'parse_command_line()' and 'run_commands()' with signatures like
|
|
those described below."""
|
|
|
|
|
|
# 'global_options' describes the command-line options that may
|
|
# be supplied to the client (setup.py) prior to any actual
|
|
# commands. Eg. "./setup.py -nv" or "./setup.py --verbose"
|
|
# both take advantage of these global options.
|
|
global_options = [('verbose', 'v', "run verbosely"),
|
|
('dry-run', 'n', "don't actually do anything"),
|
|
]
|
|
|
|
|
|
# -- Creation/initialization methods -------------------------------
|
|
|
|
def __init__ (self, attrs=None):
|
|
"""Construct a new Distribution instance: initialize all the
|
|
attributes of a Distribution, and then uses 'attrs' (a
|
|
dictionary mapping attribute names to values) to assign
|
|
some of those attributes their "real" values. (Any attributes
|
|
not mentioned in 'attrs' will be assigned to some null
|
|
value: 0, None, an empty list or dictionary, etc.) Most
|
|
importantly, initialize the 'command_obj' attribute
|
|
to the empty dictionary; this will be filled in with real
|
|
command objects by 'parse_command_line()'."""
|
|
|
|
# Default values for our command-line options
|
|
self.verbose = 0
|
|
self.dry_run = 0
|
|
|
|
# And for all other attributes (stuff that might be passed in
|
|
# from setup.py, rather than from the end-user)
|
|
self.name = None
|
|
self.version = None
|
|
self.author = None
|
|
self.licence = None
|
|
self.description = None
|
|
|
|
# 'cmdclass' maps command names to class objects, so we
|
|
# can 1) quickly figure out which class to instantiate when
|
|
# we need to create a new command object, and 2) have a way
|
|
# for the client to override command classes
|
|
self.cmdclass = {}
|
|
|
|
# The rest of these are really the business of various commands,
|
|
# rather than of the Distribution itself. However, they have
|
|
# to be here as a conduit to the relevant command class.
|
|
self.py_modules = None
|
|
self.ext_modules = None
|
|
self.package = None
|
|
|
|
# Now we'll use the attrs dictionary to possibly override
|
|
# any or all of these distribution options
|
|
if attrs:
|
|
for k in attrs.keys():
|
|
setattr (self, k, attrs[k])
|
|
|
|
# And now initialize bookkeeping stuff that can't be supplied by
|
|
# the caller at all. 'command_obj' maps command names to
|
|
# Command instances -- that's how we enforce that every command
|
|
# class is a singleton.
|
|
self.command_obj = {}
|
|
|
|
# 'have_run' maps command names to boolean values; it keeps track
|
|
# of whether we have actually run a particular command, to make it
|
|
# cheap to "run" a command whenever we think we might need to -- if
|
|
# it's already been done, no need for expensive filesystem
|
|
# operations, we just check the 'have_run' dictionary and carry on.
|
|
# It's only safe to query 'have_run' for a command class
|
|
# that has been instantiated -- a false value will be put inserted
|
|
# when the command object is created, and replaced with a true
|
|
# value when the command is succesfully run. Thus it's
|
|
# probably best to use '.get()' rather than a straight lookup.
|
|
self.have_run = {}
|
|
|
|
# __init__ ()
|
|
|
|
|
|
def parse_command_line (self, args):
|
|
"""Parse the client's command line: set any Distribution
|
|
attributes tied to command-line options, create all command
|
|
objects, and set their options from the command-line. 'args'
|
|
must be a list of command-line arguments, most likely
|
|
'sys.argv[1:]' (see the 'setup()' function). This list is
|
|
first processed for "global options" -- options that set
|
|
attributes of the Distribution instance. Then, it is
|
|
alternately scanned for Distutils command and options for
|
|
that command. Each new command terminates the options for
|
|
the previous command. The allowed options for a command are
|
|
determined by the 'options' attribute of the command object
|
|
-- thus, we instantiate (and cache) every command object
|
|
here, in order to access its 'options' attribute. Any error
|
|
in that 'options' attribute raises DistutilsGetoptError; any
|
|
error on the command-line raises DistutilsArgError. If no
|
|
Distutils commands were found on the command line, raises
|
|
DistutilsArgError."""
|
|
|
|
# We have to parse the command line a bit at a time -- global
|
|
# options, then the first command, then its options, and so on --
|
|
# because each command will be handled by a different class, and
|
|
# the options that are valid for a particular class aren't
|
|
# known until we instantiate the command class, which doesn't
|
|
# happen until we know what the command is.
|
|
|
|
self.commands = []
|
|
args = fancy_getopt (self.global_options, self, sys.argv[1:])
|
|
|
|
while args:
|
|
# Pull the current command from the head of the command line
|
|
command = args[0]
|
|
if not command_re.match (command):
|
|
raise SystemExit, "invalid command name '%s'" % command
|
|
self.commands.append (command)
|
|
|
|
# Have to instantiate the command class now, so we have a
|
|
# way to get its valid options and somewhere to put the
|
|
# results of parsing its share of the command-line
|
|
cmd_obj = self.create_command_obj (command)
|
|
|
|
# Require that the command class be derived from Command --
|
|
# that way, we can be sure that we at least have the 'run'
|
|
# and 'get_option' methods.
|
|
if not isinstance (cmd_obj, Command):
|
|
raise DistutilsClassError, \
|
|
"command class %s must subclass Command" % \
|
|
cmd_obj.__class__
|
|
|
|
# XXX this assumes that cmd_obj provides an 'options'
|
|
# attribute, but we're not enforcing that anywhere!
|
|
args = fancy_getopt (cmd_obj.options, cmd_obj, args[1:])
|
|
self.command_obj[command] = cmd_obj
|
|
self.have_run[command] = 0
|
|
|
|
# while args
|
|
|
|
# Oops, no commands found -- an end-user error
|
|
if not self.commands:
|
|
sys.stderr.write (usage + "\n")
|
|
raise DistutilsArgError, "no commands supplied"
|
|
|
|
# parse_command_line()
|
|
|
|
|
|
# -- Command class/object methods ----------------------------------
|
|
|
|
# This is a method just so it can be overridden if desired; it doesn't
|
|
# actually use or change any attributes of the Distribution instance.
|
|
def find_command_class (self, command):
|
|
"""Given a command, derives the names of the module and class
|
|
expected to implement the command: eg. 'foo_bar' becomes
|
|
'distutils.command.foo_bar' (the module) and 'FooBar' (the
|
|
class within that module). Loads the module, extracts the
|
|
class from it, and returns the class object.
|
|
|
|
Raises DistutilsModuleError with a semi-user-targeted error
|
|
message if the expected module could not be loaded, or the
|
|
expected class was not found in it."""
|
|
|
|
module_name = 'distutils.command.' + command
|
|
klass_name = string.join \
|
|
(map (string.capitalize, string.split (command, '_')), '')
|
|
|
|
try:
|
|
__import__ (module_name)
|
|
module = sys.modules[module_name]
|
|
except ImportError:
|
|
raise DistutilsModuleError, \
|
|
"invalid command '%s' (no module named %s)" % \
|
|
(command, module_name)
|
|
|
|
try:
|
|
klass = vars(module)[klass_name]
|
|
except KeyError:
|
|
raise DistutilsModuleError, \
|
|
"invalid command '%s' (no class '%s' in module '%s')" \
|
|
% (command, klass_name, module_name)
|
|
|
|
return klass
|
|
|
|
# find_command_class ()
|
|
|
|
|
|
def create_command_obj (self, command):
|
|
"""Figure out the class that should implement a command,
|
|
instantiate it, cache and return the new "command object".
|
|
The "command class" is determined either by looking it up in
|
|
the 'cmdclass' attribute (this is the mechanism whereby
|
|
clients may override default Distutils commands or add their
|
|
own), or by calling the 'find_command_class()' method (if the
|
|
command name is not in 'cmdclass'."""
|
|
|
|
# Determine the command class -- either it's in the command_class
|
|
# dictionary, or we have to divine the module and class name
|
|
klass = self.cmdclass.get(command)
|
|
if not klass:
|
|
klass = self.find_command_class (command)
|
|
self.cmdclass[command] = klass
|
|
|
|
# Found the class OK -- instantiate it
|
|
cmd_obj = klass (self)
|
|
return cmd_obj
|
|
|
|
|
|
def find_command_obj (self, command, create=1):
|
|
"""Look up and return a command object in the cache maintained by
|
|
'create_command_obj()'. If none found, the action taken
|
|
depends on 'create': if true (the default), create a new
|
|
command object by calling 'create_command_obj()' and return
|
|
it; otherwise, return None."""
|
|
|
|
cmd_obj = self.command_obj.get (command)
|
|
if not cmd_obj and create:
|
|
cmd_obj = self.create_command_obj (command)
|
|
self.command_obj[command] = cmd_obj
|
|
|
|
return cmd_obj
|
|
|
|
|
|
# -- Methods that operate on the Distribution ----------------------
|
|
|
|
def announce (self, msg, level=1):
|
|
"""Print 'msg' if 'level' is greater than or equal to the verbosity
|
|
level recorded in the 'verbose' attribute (which, currently,
|
|
can be only 0 or 1)."""
|
|
|
|
if self.verbose >= level:
|
|
print msg
|
|
|
|
|
|
def run_commands (self):
|
|
"""Run each command that was seen on the client command line.
|
|
Uses the list of commands found and cache of command objects
|
|
created by 'create_command_obj()'."""
|
|
|
|
for cmd in self.commands:
|
|
self.run_command (cmd)
|
|
|
|
|
|
def get_option (self, option):
|
|
"""Return the value of a distribution option. Raise
|
|
DistutilsOptionError if 'option' is not known."""
|
|
|
|
try:
|
|
return getattr (self, opt)
|
|
except AttributeError:
|
|
raise DistutilsOptionError, \
|
|
"unknown distribution option %s" % option
|
|
|
|
|
|
def get_options (self, *options):
|
|
"""Return (as a tuple) the values of several distribution
|
|
options. Raise DistutilsOptionError if any element of
|
|
'options' is not known."""
|
|
|
|
values = []
|
|
try:
|
|
for opt in options:
|
|
values.append (getattr (self, opt))
|
|
except AttributeError, name:
|
|
raise DistutilsOptionError, \
|
|
"unknown distribution option %s" % name
|
|
|
|
return tuple (values)
|
|
|
|
|
|
# -- Methods that operate on its Commands --------------------------
|
|
|
|
def run_command (self, command):
|
|
|
|
"""Do whatever it takes to run a command (including nothing at all,
|
|
if the command has already been run). Specifically: if we have
|
|
already created and run the command named by 'command', return
|
|
silently without doing anything. If the command named by
|
|
'command' doesn't even have a command object yet, create one.
|
|
Then invoke 'run()' on that command object (or an existing
|
|
one)."""
|
|
|
|
# Already been here, done that? then return silently.
|
|
if self.have_run.get (command):
|
|
return
|
|
|
|
self.announce ("running " + command)
|
|
cmd_obj = self.find_command_obj (command)
|
|
cmd_obj.run ()
|
|
self.have_run[command] = 1
|
|
|
|
|
|
def get_command_option (self, command, option):
|
|
"""Create a command object for 'command' if necessary, finalize
|
|
its option values by invoking its 'set_final_options()'
|
|
method, and return the value of its 'option' option. Raise
|
|
DistutilsOptionError if 'option' is not known for
|
|
that 'command'."""
|
|
|
|
cmd_obj = self.find_command_obj (command)
|
|
cmd_obj.set_final_options ()
|
|
return cmd_obj.get_option (option)
|
|
try:
|
|
return getattr (cmd_obj, option)
|
|
except AttributeError:
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % (command, option)
|
|
|
|
|
|
def get_command_options (self, command, *options):
|
|
"""Create a command object for 'command' if necessary, finalize
|
|
its option values by invoking its 'set_final_options()'
|
|
method, and return the values of all the options listed in
|
|
'options' for that command. Raise DistutilsOptionError if
|
|
'option' is not known for that 'command'."""
|
|
|
|
cmd_obj = self.find_command_obj (command)
|
|
cmd_obj.set_final_options ()
|
|
values = []
|
|
try:
|
|
for opt in options:
|
|
values.append (getattr (cmd_obj, option))
|
|
except AttributeError, name:
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % (command, name)
|
|
|
|
return tuple (values)
|
|
|
|
# end class Distribution
|
|
|
|
|
|
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 'set_initial_options()'
|
|
and "initialized" (given their real values) in
|
|
'set_final_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, option file, ...), and any options dependent on other
|
|
options must be computed *after* these outside influences have
|
|
been processed -- hence 'set_final_values()'. 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 'set_default_options()' method, which is the
|
|
real initializer and depends on the actual command being
|
|
instantiated."""
|
|
|
|
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.set_default_options ()
|
|
|
|
# end __init__ ()
|
|
|
|
# Subclasses must define:
|
|
# set_default_options()
|
|
# provide default values for all options; may be overridden
|
|
# by Distutils client, by command-line options, or by options
|
|
# from option file
|
|
# set_final_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 set_default_options (self):
|
|
"""Set default values for all the options that this command
|
|
supports. Note that these defaults may be overridden
|
|
by the command-line supplied by the user; thus, this is
|
|
not the place to code dependencies between options; generally,
|
|
'set_default_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 set_final_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 'set_default_options()'.
|
|
|
|
This method must be implemented by all command classes."""
|
|
|
|
raise RuntimeError, \
|
|
"abstract method -- subclass %s must override" % self.__class__
|
|
|
|
def run (self):
|
|
"""A command's raison d'etre: carry out the action it exists
|
|
to perform, controlled by the options initialized in
|
|
'set_initial_options()', customized by the user and other
|
|
commands, and finalized in 'set_final_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 Distribution instance to which this command belongs
|
|
has a verbosity level of greater than or equal to 'level'
|
|
print 'msg' to stdout."""
|
|
if self.distribution.verbose >= level:
|
|
print msg
|
|
|
|
|
|
# -- Option query/set methods --------------------------------------
|
|
|
|
def get_option (self, option):
|
|
"""Return the value of a single option for this command. Raise
|
|
DistutilsOptionError if 'option' is not known."""
|
|
try:
|
|
return getattr (self, option)
|
|
except AttributeError:
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % \
|
|
(self.command_name(), option)
|
|
|
|
|
|
def get_options (self, *options):
|
|
"""Return (as a tuple) the values of several options for this
|
|
command. Raise DistutilsOptionError if any of the options in
|
|
'options' are not known."""
|
|
|
|
values = []
|
|
try:
|
|
for opt in options:
|
|
values.append (getattr (self, opt))
|
|
except AttributeError, name:
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % \
|
|
(self.command_name(), name)
|
|
|
|
return tuple (values)
|
|
|
|
|
|
def set_option (self, option, value):
|
|
"""Set the value of a single option for this command. Raise
|
|
DistutilsOptionError if 'option' is not known."""
|
|
|
|
if not hasattr (self, option):
|
|
raise DistutilsOptionError, \
|
|
"command %s: no such option %s" % \
|
|
(self.command_name(), option)
|
|
if value is not None:
|
|
setattr (self, option, value)
|
|
|
|
def set_options (self, **optval):
|
|
"""Set the values of several options for this command. Raise
|
|
DistutilsOptionError if any of the options specified as
|
|
keyword arguments are not known."""
|
|
|
|
for k in optval.keys():
|
|
if optval[k] is not None:
|
|
self.set_option (k, optval[k])
|
|
|
|
|
|
# -- Convenience methods for commands ------------------------------
|
|
|
|
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
|
|
'set_initial_values()' and 'set_final_values()'. Usually
|
|
called from 'set_final_values()' 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.find_command_obj (src_cmd)
|
|
src_cmd_obj.set_final_options ()
|
|
try:
|
|
for (src_option, dst_option) in option_pairs:
|
|
if getattr (self, dst_option) is None:
|
|
self.set_option (dst_option,
|
|
src_cmd_obj.get_option (src_option))
|
|
except AttributeError, name:
|
|
# duh, which command?
|
|
raise DistutilsOptionError, "unknown option %s" % name
|
|
|
|
|
|
def set_peer_option (self, command, option, value):
|
|
"""Attempt to simulate a command-line override of some option
|
|
value in another command. Creates a command object for
|
|
'command' if necessary, sets 'option' to 'value', and invokes
|
|
'set_final_options()' on that command object. This will only
|
|
have the desired effect if the command object for 'command'
|
|
has not previously been created. Generally this is used to
|
|
ensure that the options in 'command' dependent on 'option'
|
|
are computed, hopefully (but not necessarily) deriving from
|
|
'value'. It might be more accurate to call this method
|
|
'influence_dependent_peer_options()'."""
|
|
|
|
cmd_obj = self.distribution.find_command_obj (command)
|
|
cmd_obj.set_option (option, value)
|
|
cmd_obj.set_final_options ()
|
|
|
|
|
|
def run_peer (self, command):
|
|
"""Run some other command: uses the 'run_command()' method of
|
|
Distribution, which creates the command object if necessary
|
|
and then invokes its 'run()' method."""
|
|
|
|
self.distribution.run_command (command)
|
|
|
|
|
|
# -- External world manipulation -----------------------------------
|
|
|
|
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 (carried around by
|
|
the Command's Distribution), 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.distribution.dry_run:
|
|
apply (func, args)
|
|
|
|
# execute()
|
|
|
|
|
|
def mkpath (self, name, mode=0777):
|
|
util.mkpath (name, mode,
|
|
self.distribution.verbose, self.distribution.dry_run)
|
|
|
|
|
|
def copy_file (self, infile, outfile,
|
|
preserve_mode=1, preserve_times=1, update=1, level=1):
|
|
"""Copy a file respecting verbose and dry-run flags."""
|
|
|
|
return util.copy_file (infile, outfile,
|
|
preserve_mode, preserve_times,
|
|
update, self.distribution.verbose >= level,
|
|
self.distribution.dry_run)
|
|
|
|
|
|
def copy_tree (self, infile, outfile,
|
|
preserve_mode=1, preserve_times=1, preserve_symlinks=0,
|
|
update=1, level=1):
|
|
"""Copy an entire directory tree respecting verbose and dry-run
|
|
flags."""
|
|
|
|
return util.copy_tree (infile, outfile,
|
|
preserve_mode,preserve_times,preserve_symlinks,
|
|
update, self.distribution.verbose >= level,
|
|
self.distribution.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 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"
|
|
|
|
# XXX this stuff should probably be moved off to a function
|
|
# in 'distutils.util'
|
|
from stat import *
|
|
|
|
if os.path.exists (outfile):
|
|
out_mtime = os.stat (outfile)[ST_MTIME]
|
|
|
|
# Loop over all infiles. If any infile is newer than outfile,
|
|
# then we'll have to regenerate outfile
|
|
for f in infiles:
|
|
in_mtime = os.stat (f)[ST_MTIME]
|
|
if in_mtime > out_mtime:
|
|
runit = 1
|
|
break
|
|
else:
|
|
runit = 0
|
|
|
|
else:
|
|
runit = 1
|
|
|
|
# If we determined that 'outfile' must be regenerated, then
|
|
# perform the action that presumably regenerates it
|
|
if runit:
|
|
self.execute (func, args, exec_msg, level)
|
|
|
|
# Otherwise, print the "skip" message
|
|
else:
|
|
self.announce (skip_msg, level)
|
|
|
|
# make_file ()
|
|
|
|
|
|
# def make_files (self, infiles, outfiles, 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 or more output files. Works
|
|
# just like 'execute()', except the operation is skipped and a
|
|
# different message printed if all files listed in 'outfiles'
|
|
# already exist and are newer than all files listed in
|
|
# 'infiles'."""
|
|
|
|
# pass
|
|
|
|
|
|
|
|
# end class Command
|