"""distutils.command.build

Implements the Distutils 'build' command."""

import sys, os
from distutils.core import Command
from distutils.errors import DistutilsOptionError
from distutils.util import get_platform


def show_compilers():
 from distutils.ccompiler import show_compilers
 show_compilers()


class build(Command):

 description = "build everything needed to install"

 user_options = [
 ('build-base=', 'b',
 "base directory for build library"),
 ('build-purelib=', None,
 "build directory for platform-neutral distributions"),
 ('build-platlib=', None,
 "build directory for platform-specific distributions"),
 ('build-lib=', None,
 "build directory for all distribution (defaults to either " +
 "build-purelib or build-platlib"),
 ('build-scripts=', None,
 "build directory for scripts"),
 ('build-temp=', 't',
 "temporary build directory"),
 ('plat-name=', 'p',
 "platform name to build for, if supported "
 "(default: %s)" % get_platform()),
 ('compiler=', 'c',
 "specify the compiler type"),
 ('parallel=', 'j',
 "number of parallel build jobs"),
 ('debug', 'g',
 "compile extensions and libraries with debugging information"),
 ('force', 'f',
 "forcibly build everything (ignore file timestamps)"),
 ('executable=', 'e',
 "specify final destination interpreter path (build.py)"),
 ]

 boolean_options = ['debug', 'force']

 help_options = [
 ('help-compiler', None,
 "list available compilers", show_compilers),
 ]

 def initialize_options(self):
 self.build_base = 'build'
 # these are decided only after 'build_base' has its final value
 # (unless overridden by the user or client)
 self.build_purelib = None
 self.build_platlib = None
 self.build_lib = None
 self.build_temp = None
 self.build_scripts = None
 self.compiler = None
 self.plat_name = None
 self.debug = None
 self.force = 0
 self.executable = None
 self.parallel = None

 def finalize_options(self):
 if self.plat_name is None:
 self.plat_name = get_platform()
 else:
 # plat-name only supported for windows (other platforms are
 # supported via ./configure flags, if at all). Avoid misleading
 # other platforms.
 if os.name != 'nt':
 raise DistutilsOptionError(
 "--plat-name only supported on Windows (try "
 "using './configure --help' on your platform)")

 plat_specifier = ".%s-%d.%d" % (self.plat_name, *sys.version_info[:2])

 # Make it so Python 2.x and Python 2.x with --with-pydebug don't
 # share the same build directories. Doing so confuses the build
 # process for C modules
 if hasattr(sys, 'gettotalrefcount'):
 plat_specifier += '-pydebug'

 # 'build_purelib' and 'build_platlib' just default to 'lib' and
 # 'lib.<plat>' under the base build directory. We only use one of
 # them for a given distribution, though --
 if self.build_purelib is None:
 self.build_purelib = os.path.join(self.build_base, 'lib')
 if self.build_platlib is None:
 self.build_platlib = os.path.join(self.build_base,
 'lib' + plat_specifier)

 # 'build_lib' is the actual directory that we will use for this
 # particular module distribution -- if user didn't supply it, pick
 # one of 'build_purelib' or 'build_platlib'.
 if self.build_lib is None:
 if self.distribution.ext_modules:
 self.build_lib = self.build_platlib
 else:
 self.build_lib = self.build_purelib

 # 'build_temp' -- temporary directory for compiler turds,
 # "build/temp.<plat>"
 if self.build_temp is None:
 self.build_temp = os.path.join(self.build_base,
 'temp' + plat_specifier)
 if self.build_scripts is None:
 self.build_scripts = os.path.join(self.build_base,
 'scripts-%d.%d' % sys.version_info[:2])

 if self.executable is None and sys.executable:
 self.executable = os.path.normpath(sys.executable)

 if isinstance(self.parallel, str):
 try:
 self.parallel = int(self.parallel)
 except ValueError:
 raise DistutilsOptionError("parallel should be an integer")

 def run(self):
 # Run all relevant sub-commands. This will be some subset of:
 # - build_py - pure Python modules
 # - build_clib - standalone C libraries
 # - build_ext - Python extensions
 # - build_scripts - (Python) scripts
 for cmd_name in self.get_sub_commands():
 self.run_command(cmd_name)


 # -- Predicates for the sub-command list ---------------------------

 def has_pure_modules(self):
 return self.distribution.has_pure_modules()

 def has_c_libraries(self):
 return self.distribution.has_c_libraries()

 def has_ext_modules(self):
 return self.distribution.has_ext_modules()

 def has_scripts(self):
 return self.distribution.has_scripts()


 sub_commands = [('build_py', has_pure_modules),
 ('build_clib', has_c_libraries),
 ('build_ext', has_ext_modules),
 ('build_scripts', has_scripts),
 ]