Source

SCons / src / engine / SCons / Tool / MSCommon / common.py

Steven Knight 7c2019f 

























William Deegan ecf4ad3 
Steven Knight 7c2019f 









Steven Knight dbe1f61 
William Deegan ecf4ad3 



Steven Knight dbe1f61 








Steven Knight 7c2019f 

William Deegan ecf4ad3 

Steven Knight 7c2019f 
David Cournapeau c908dcb 


William Deegan ecf4ad3 


Gary Oberbrunner 4fd2895 









William Deegan ecf4ad3 

Gary Oberbrunner 4fd2895 








William Deegan ecf4ad3 

Steven Knight 7c2019f 



David Cournapeau c908dcb 








Steven Knight 7c2019f 


Steven Knight 6507acb 
Steven Knight 7c2019f 





Steven Knight 6507acb 




Steven Knight 7c2019f 





Steven Knight 6507acb 
Steven Knight 7c2019f 





William Deegan f607801 


Steven Knight 6507acb 








Gary Oberbrunner 0da1edf 

Steven Knight 6507acb 







Steven Knight 7c2019f 

William Deegan f607801 




Steven Knight 7c2019f 

William Deegan f607801 




Steven Knight 7c2019f 




Steven Knight 6507acb 





Steven Knight 7c2019f 
Steven Knight 6507acb 
Steven Knight 7c2019f 







Greg Noel 450d604 
Steven Knight 7c2019f 





Steven Knight 4e464fc 
Steven Knight 7c2019f 

















































#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

__doc__ = """
Common helper functions for working with the Microsoft tool chain.
"""

import copy
import os
import subprocess
import re

import SCons.Util


logfile = os.environ.get('SCONS_MSCOMMON_DEBUG')
if logfile == '-':
    def debug(x):
        print x
elif logfile:
    try:
        import logging
    except ImportError:
        debug = lambda x: open(logfile, 'a').write(x + '\n')
    else:
        logging.basicConfig(filename=logfile, level=logging.DEBUG)
        debug = logging.debug
else:
    debug = lambda x: None


_is_win64 = None

def is_win64():
    """Return true if running on windows 64 bits.
    
    Works whether python itself runs in 64 bits or 32 bits."""
    # Unfortunately, python does not provide a useful way to determine
    # if the underlying Windows OS is 32-bit or 64-bit.  Worse, whether
    # the Python itself is 32-bit or 64-bit affects what it returns,
    # so nothing in sys.* or os.* help.  

    # Apparently the best solution is to use env vars that Windows
    # sets.  If PROCESSOR_ARCHITECTURE is not x86, then the python
    # process is running in 64 bit mode (on a 64-bit OS, 64-bit
    # hardware, obviously).
    # If this python is 32-bit but the OS is 64, Windows will set
    # ProgramW6432 and PROCESSOR_ARCHITEW6432 to non-null.
    # (Checking for HKLM\Software\Wow6432Node in the registry doesn't
    # work, because some 32-bit installers create it.)
    global _is_win64
    if _is_win64 is None:
        # I structured these tests to make it easy to add new ones or
        # add exceptions in the future, because this is a bit fragile.
        _is_win64 = False
        if os.environ.get('PROCESSOR_ARCHITECTURE','x86') != 'x86':
            _is_win64 = True
        if os.environ.get('PROCESSOR_ARCHITEW6432'):
            _is_win64 = True
        if os.environ.get('ProgramW6432'):
            _is_win64 = True
    return _is_win64


def read_reg(value):
    return SCons.Util.RegGetValue(SCons.Util.HKEY_LOCAL_MACHINE, value)[0]

def has_reg(value):
    """Return True if the given key exists in HKEY_LOCAL_MACHINE, False
    otherwise."""
    try:
        SCons.Util.RegOpenKeyEx(SCons.Util.HKEY_LOCAL_MACHINE, value)
        ret = True
    except WindowsError:
        ret = False
    return ret

# Functions for fetching environment variable settings from batch files.

def normalize_env(env, keys, force=False):
    """Given a dictionary representing a shell environment, add the variables
    from os.environ needed for the processing of .bat files; the keys are
    controlled by the keys argument.

    It also makes sure the environment values are correctly encoded.

    If force=True, then all of the key values that exist are copied
    into the returned dictionary.  If force=false, values are only
    copied if the key does not already exist in the copied dictionary.

    Note: the environment is copied."""
    normenv = {}
    if env:
        for k in env.keys():
            normenv[k] = copy.deepcopy(env[k]).encode('mbcs')

        for k in keys:
            if k in os.environ and (force or not k in normenv):
                normenv[k] = os.environ[k].encode('mbcs')

    return normenv

def get_output(vcbat, args = None, env = None):
    """Parse the output of given bat file, with given args."""
    
    if env is None:
        # Create a blank environment, for use in launching the tools
        env = SCons.Environment.Environment(tools=[])

    # TODO:  This is a hard-coded list of the variables that (may) need
    # to be imported from os.environ[] for v[sc]*vars*.bat file
    # execution to work.  This list should really be either directly
    # controlled by vc.py, or else derived from the common_tools_var
    # settings in vs.py.
    vars = [
        'COMSPEC',
        'VS110COMNTOOLS',
        'VS100COMNTOOLS',
        'VS90COMNTOOLS',
        'VS80COMNTOOLS',
        'VS71COMNTOOLS',
        'VS70COMNTOOLS',
        'VS60COMNTOOLS',
    ]
    env['ENV'] = normalize_env(env['ENV'], vars, force=False)

    if args:
        debug("Calling '%s %s'" % (vcbat, args))
        popen = SCons.Action._subproc(env,
                                     '"%s" %s & set' % (vcbat, args),
                                     stdin = 'devnull',
                                     stdout=subprocess.PIPE,
                                     stderr=subprocess.PIPE)
    else:
        debug("Calling '%s'" % vcbat)
        popen = SCons.Action._subproc(env,
                                     '"%s" & set' % vcbat,
                                     stdin = 'devnull',
                                     stdout=subprocess.PIPE,
                                     stderr=subprocess.PIPE)

    # Use the .stdout and .stderr attributes directly because the
    # .communicate() method uses the threading module on Windows
    # and won't work under Pythons not built with threading.
    stdout = popen.stdout.read()
    stderr = popen.stderr.read()
    if stderr:
        # TODO: find something better to do with stderr;
        # this at least prevents errors from getting swallowed.
        import sys
        sys.stderr.write(stderr)
    if popen.wait() != 0:
        raise IOError(stderr.decode("mbcs"))

    output = stdout.decode("mbcs")
    return output

def parse_output(output, keep = ("INCLUDE", "LIB", "LIBPATH", "PATH")):
    # dkeep is a dict associating key: path_list, where key is one item from
    # keep, and pat_list the associated list of paths

    dkeep = dict([(i, []) for i in keep])

    # rdk will  keep the regex to match the .bat file output line starts
    rdk = {}
    for i in keep:
        rdk[i] = re.compile('%s=(.*)' % i, re.I)

    def add_env(rmatch, key, dkeep=dkeep):
        plist = rmatch.group(1).split(os.pathsep)
        for p in plist:
            # Do not add empty paths (when a var ends with ;)
            if p:
                p = p.encode('mbcs')
                # XXX: For some reason, VC98 .bat file adds "" around the PATH
                # values, and it screws up the environment later, so we strip
                # it. 
                p = p.strip('"')
                dkeep[key].append(p)

    for line in output.splitlines():
        for k,v in rdk.items():
            m = v.match(line)
            if m:
                add_env(m, k)

    return dkeep

# TODO(sgk): unused
def output_to_dict(output):
    """Given an output string, parse it to find env variables.

    Return a dict where keys are variables names, and values their content"""
    envlinem = re.compile(r'^([a-zA-z0-9]+)=([\S\s]*)$')
    parsedenv = {}
    for line in output.splitlines():
        m = envlinem.match(line)
        if m:
            parsedenv[m.group(1)] = m.group(2)
    return parsedenv

# TODO(sgk): unused
def get_new(l1, l2):
    """Given two list l1 and l2, return the items in l2 which are not in l1.
    Order is maintained."""

    # We don't try to be smart: lists are small, and this is not the bottleneck
    # is any case
    new = []
    for i in l2:
        if i not in l1:
            new.append(i)

    return new

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