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# -*- coding: utf-8 -*-
#
# dsextras.py - Extra classes and utilities for distutils,
# adding pkg-config support
import os
import sys
import fnmatch
import re
import string
from distutils import dep_util
from distutils.command.build_ext import build_ext
from distutils.command.install_lib import install_lib
from distutils.command.install_data import install_data
from distutils.extension import Extension
from distutils.spawn import find_executable
try:
import codegen.createdefs
from codegen.override import Overrides
from codegen.defsparser import DefsParser
from codegen.codegen import register_types, SourceWriter, FileOutput
except ImportError:
template_classes_enabled = False
else:
template_classes_enabled = True
GLOBAL_INC = []
GLOBAL_MACROS = []
codegen_error_message='''
***************************************************************************
Codegen could not be found on your system and is required by the
dsextras.Template and dsextras.TemplateExtension classes.
***************************************************************************
'''
def get_m4_define(varname):
'''Return the value of a m4_define variable as set in configure.in.'''
pattern = re.compile('m4_define\(' + varname + '\,\s*(.+)\)')
if os.path.exists('configure.ac'):
fname = 'configure.ac'
elif os.path.exists('configure.in'):
fname = 'configure.in'
else:
raise SystemExit('ERROR: Could not find configure file')
for line in open(fname).readlines():
match_obj = pattern.match(line)
if match_obj:
return match_obj.group(1)
return None
def getoutput(cmd):
'''Return output (stdout or stderr) of executing cmd in a shell.'''
return getstatusoutput(cmd)[1]
def getstatusoutput(cmd):
'''Return (status, output) of executing cmd in a shell.'''
if sys.platform == 'win32':
pipe = os.popen(cmd, 'r')
text = pipe.read()
sts = pipe.close() or 0
while text[-1:] in ['\n', '\r']:
text = text[:-1]
return sts, text
else:
from commands import getstatusoutput
return getstatusoutput(cmd)
def have_gcc():
'''Checks for the existence of gcc'''
if find_executable('gcc'):
return True
def have_pkgconfig():
'''Checks for the existence of pkg-config'''
if find_executable('pkg-config'):
return True
def list_files(dir):
'''List all files in a dir, with filename match support:
for example: glade/*.glade will return all files in the glade directory
that matches *.glade. It also looks up the full path'''
if dir.find(os.sep) != -1:
parts = dir.split(os.sep)
dir = string.join(parts[:-1], os.sep)
pattern = parts[-1]
else:
pattern = dir
dir = '.'
dir = os.path.abspath(dir)
retval = []
for file in os.listdir(dir):
if fnmatch.fnmatch(file, pattern):
retval.append(os.path.join(dir, file))
return retval
def pkgc_version_check(name, req_version):
'''Check the existence and version number of a package:
returns False if not installed or too old, True otherwise.'''
is_installed = not os.system('pkg-config --exists %s' % name)
if not is_installed:
return False
orig_version = pkgc_get_version(name)
version = map(int, orig_version.split('.'))
pkc_version = map(int, req_version.split('.'))
if version >= pkc_version:
return True
return False
def pkgc_get_version(name):
'''return the version as return by pkg-config --modversion'''
return getoutput('pkg-config --modversion %s' % name)
def pkgc_get_libraries(name):
'''returns a list of libraries as returned by pkg-config --libs-only-l'''
output = getoutput('pkg-config --libs-only-l %s' % name)
return output.replace('-l', '').split()
def pkgc_get_library_dirs(name):
'''returns a list of library dirs as returned by pkg-config --libs-only-L'''
output = getoutput('pkg-config --libs-only-L %s' % name)
return output.replace('-L', '').split()
def pkgc_get_include_dirs(name):
'''returns a list of include dirs as returned by pkg-config --cflags-only-I'''
output = getoutput('pkg-config --cflags-only-I %s' % name)
return output.replace('-I', '').split()
def pkgc_get_defs_dir(name):
'''returns the defs dir as returned by pkg-config --variable=defsdir'''
output = getoutput('pkg-config --variable=defsdir %s' % name)
return output
class BuildExt(build_ext):
def init_extra_compile_args(self):
self.extra_compile_args = []
if sys.platform == 'win32' and self.compiler.compiler_type == 'mingw32':
if not have_gcc():
raise SystemExit('ERROR: Could not find gcc.')
# MSVC compatible struct packing is required.
# Note gcc2 uses -fnative-struct while gcc3
# and gcc4 use -mms-bitfields. Based on the
# version the proper flag is used below.
msnative_struct = {'2': '-fnative-struct',
'3': '-mms-bitfields',
'4': '-mms-bitfields'}
gcc_version = getoutput('gcc -dumpversion')
print ('using MinGW GCC version %s with %s option' % \
(gcc_version, msnative_struct[gcc_version[0]]))
self.extra_compile_args.append(msnative_struct[gcc_version[0]])
def modify_compiler(self):
if sys.platform == 'win32' and self.compiler.compiler_type == 'mingw32':
if not have_gcc():
raise SystemExit('ERROR: Could not find gcc.')
# Remove '-static' linker option to prevent MinGW ld
# from trying to link with MSVC import libraries.
if self.compiler.linker_so.count('-static'):
self.compiler.linker_so.remove('-static')
def build_extensions(self):
# Init self.extra_compile_args
self.init_extra_compile_args()
# Modify default compiler settings
self.modify_compiler()
# Invoke base build_extensions()
build_ext.build_extensions(self)
def build_extension(self, ext):
# Add self.extra_compile_args to ext.extra_compile_args
ext.extra_compile_args += self.extra_compile_args
# Generate eventual templates before building
if hasattr(ext, 'generate'):
ext.generate()
# Filter out 'c' and 'm' libs when compilic w/ msvc
if sys.platform == 'win32' and self.compiler.compiler_type == 'msvc':
save_libs = ext.libraries
ext.libraries = [lib for lib in ext.libraries
if lib not in ['c', 'm']]
else:
save_libs = ext.libraries
# Invoke base build_extension()
build_ext.build_extension(self, ext)
if save_libs is not None and save_libs != ext.libraries:
ext.libraries = save_libs
class InstallLib(install_lib):
local_outputs = []
local_inputs = []
def set_install_dir(self, install_dir):
self.install_dir = install_dir
def get_outputs(self):
return install_lib.get_outputs(self) + self.local_outputs
def get_inputs(self):
return install_lib.get_inputs(self) + self.local_inputs
class InstallData(install_data):
local_outputs = []
local_inputs = []
template_options = {}
def prepare(self):
if os.name == 'nt':
self.prefix = os.sep.join(self.install_dir.split(os.sep)[:-3])
else:
# default: os.name == 'posix'
self.prefix = os.sep.join(self.install_dir.split(os.sep)[:-4])
self.exec_prefix = '${prefix}/bin'
self.includedir = '${prefix}/include'
self.libdir = '${prefix}/lib'
self.datarootdir = '${prefix}/share'
self.datadir = '${prefix}/share'
self.add_template_option('prefix', self.prefix)
self.add_template_option('exec_prefix', self.exec_prefix)
self.add_template_option('includedir', self.includedir)
self.add_template_option('libdir', self.libdir)
self.add_template_option('datarootdir', self.datarootdir)
self.add_template_option('datadir', self.datadir)
self.add_template_option('PYTHON', sys.executable)
self.add_template_option('THREADING_CFLAGS', '')
def set_install_dir(self, install_dir):
self.install_dir = install_dir
def add_template_option(self, name, value):
self.template_options['@%s@' % name] = value
def install_template(self, filename, install_dir):
'''Install template filename into target directory install_dir.'''
output_file = os.path.split(filename)[-1][:-3]
template = open(filename).read()
for key, value in self.template_options.items():
template = template.replace(key, value)
output = os.path.join(install_dir, output_file)
self.mkpath(install_dir)
open(output, 'wb').write(template)
self.local_inputs.append(filename)
self.local_outputs.append(output)
return output
def get_outputs(self):
return install_data.get_outputs(self) + self.local_outputs
def get_inputs(self):
return install_data.get_inputs(self) + self.local_inputs
class PkgConfigExtension(Extension):
# Name of pygobject package extension depends on, can be None
pygobject_pkc = 'pygobject-2.0'
can_build_ok = None
def __init__(self, **kwargs):
name = kwargs['pkc_name']
if 'include_dirs' in kwargs:
kwargs['include_dirs'] += self.get_include_dirs(name) + GLOBAL_INC
else:
kwargs['include_dirs'] = self.get_include_dirs(name) + GLOBAL_INC
kwargs['define_macros'] = GLOBAL_MACROS
if 'libraries' in kwargs:
kwargs['libraries'] += self.get_libraries(name)
else:
kwargs['libraries'] = self.get_libraries(name)
if 'library_dirs' in kwargs:
kwargs['library_dirs'] += self.get_library_dirs(name)
else:
kwargs['library_dirs'] = self.get_library_dirs(name)
if 'pygobject_pkc' in kwargs:
self.pygobject_pkc = kwargs.pop('pygobject_pkc')
if self.pygobject_pkc:
kwargs['include_dirs'] += self.get_include_dirs(self.pygobject_pkc)
kwargs['libraries'] += self.get_libraries(self.pygobject_pkc)
kwargs['library_dirs'] += self.get_library_dirs(self.pygobject_pkc)
self.name = kwargs['name']
self.pkc_name = kwargs['pkc_name']
self.pkc_version = kwargs['pkc_version']
del kwargs['pkc_name'], kwargs['pkc_version']
Extension.__init__(self, **kwargs)
def get_include_dirs(self, names):
if type(names) != tuple:
names = (names,)
retval = []
for name in names:
retval.extend(pkgc_get_include_dirs(name))
return retval
def get_libraries(self, names):
if type(names) != tuple:
names = (names,)
retval = []
for name in names:
retval.extend(pkgc_get_libraries(name))
return retval
def get_library_dirs(self, names):
if type(names) != tuple:
names = (names,)
retval = []
for name in names:
retval.extend(pkgc_get_library_dirs(name))
return retval
def can_build(self):
'''If the pkg-config version found is good enough'''
if self.can_build_ok is not None:
return self.can_build_ok
if type(self.pkc_name) != tuple:
reqs = [(self.pkc_name, self.pkc_version)]
else:
reqs = zip(self.pkc_name, self.pkc_version)
for package, version in reqs:
retval = os.system('pkg-config --exists %s' % package)
if retval:
print ('* %s.pc could not be found, bindings for %s'
' will not be built.' % (package, self.name))
self.can_build_ok = False
return False
orig_version = pkgc_get_version(package)
if (map(int, orig_version.split('.')) >=
map(int, version.split('.'))):
self.can_build_ok = True
return True
else:
print ('Warning: Too old version of %s' % package)
print (' Need %s, but %s is installed' % (version, orig_version))
self.can_build_ok = False
return False
def generate(self):
pass
class Template(object):
def __new__(cls, *args, **kwds):
# The Template and TemplateExtension classes require codegen
if not template_classes_enabled:
raise NameError('\'%s\' is not defined\n%s' % (cls.__name__,
codegen_error_message))
return object.__new__(cls)
def __init__(self, override, output, defs, prefix,
register=[], load_types=None, py_ssize_t_clean=False):
self.override = override
self.output = output
self.prefix = prefix
self.load_types = load_types
self.py_ssize_t_clean = py_ssize_t_clean
self.built_defs=[]
if isinstance(defs, tuple):
self.defs=defs[0]
self.built_defs.append(defs)
else:
self.defs=defs
self.register=[]
for r in register:
if isinstance(r, tuple):
self.register.append(r[0])
self.built_defs.append(r)
else:
self.register.append(r)
def check_dates(self):
# Return True if files are up-to-date
files=self.register[:]
files.append(self.override)
files.append(self.defs)
return not dep_util.newer_group(files, self.output)
def generate_defs(self):
for (target, sources) in self.built_defs:
if dep_util.newer_group(sources, target):
# createdefs is mostly called from the CLI !
args=['dummy', target] + sources
codegen.createdefs.main(args)
def generate(self):
# Generate defs files if necessary
self.generate_defs()
# ... then check the file timestamps
if self.check_dates():
return
for item in self.register:
dp = DefsParser(item, dict(GLOBAL_MACROS))
dp.startParsing()
register_types(dp)
if self.load_types:
globals = {}
execfile(self.load_types, globals)
dp = DefsParser(self.defs, dict(GLOBAL_MACROS))
dp.startParsing()
register_types(dp)
fd = open(self.output, 'w')
sw = SourceWriter(dp, Overrides(self.override), self.prefix,
FileOutput(fd, self.output))
sw.write(self.py_ssize_t_clean)
fd.close()
class TemplateExtension(PkgConfigExtension):
def __new__(cls,*args, **kwds):
if not template_classes_enabled:
raise NameError('\'%s\' is not defined\n%s' % (cls.__name__,
codegen_error_message))
return PkgConfigExtension.__new__(cls,*args, **kwds)
def __init__(self, **kwargs):
name = kwargs['name']
defs = kwargs['defs']
if isinstance(defs, tuple):
output = defs[0][:-5] + '.c'
else:
output = defs[:-5] + '.c'
override = kwargs['override']
load_types = kwargs.get('load_types')
py_ssize_t_clean = kwargs.pop('py_ssize_t_clean', False)
self.templates = []
self.templates.append(Template(override, output, defs, 'py' + name,
kwargs['register'], load_types,
py_ssize_t_clean))
del kwargs['register'], kwargs['override'], kwargs['defs']
if load_types:
del kwargs['load_types']
if kwargs.has_key('output'):
kwargs['name'] = kwargs['output']
del kwargs['output']
PkgConfigExtension.__init__(self, **kwargs)
def generate(self):
map(lambda x: x.generate(), self.templates)