#============================================================================ 

#Name        : site.py 

#Part of     : Helium 

#Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

#All rights reserved.

#This component and the accompanying materials are made available

#under the terms of the License "Eclipse Public License v1.0"

#which accompanies this distribution, and is available

#at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

#Initial Contributors:

#Nokia Corporation - initial contribution.

#

#Contributors:

#

#Description:

#===============================================================================

# Duplicating setuptools' site.py...

def __boot():

    PYTHONPATH = []    

    if sys.platform=='win32':

        PYTHONPATH.append(os.path.join(sys.prefix, 'lib'))

    if not (os.environ.get('PYTHONPATH') is None or (sys.platform=='win32' and not os.environ.get('PYTHONPATH'))):

        PYTHONPATH.extend(os.environ.get('PYTHONPATH').split(os.pathsep))

    pic = getattr(sys,'path_importer_cache',{})

    stdpath = sys.path[len(PYTHONPATH):]

    mydir = os.path.dirname(__file__)

    known_paths = dict([(makepath(item)[1],1) for item in sys.path]) # 2.2 comp

    oldpos = getattr(sys,'__egginsert',0)   # save old insertion position

    sys.__egginsert = 0                     # and reset the current one

    for item in PYTHONPATH:

        addsitedir(item)

        item_site_packages = os.path.join(item, 'site-packages')

        if os.path.exists(item_site_packages):

            addsitedir(item_site_packages)

    sys.__egginsert += oldpos           # restore effective old position

    d,nd = makepath(stdpath[0])

    insert_at = None

    new_path = []

    for item in sys.path:

        p,np = makepath(item)

        if np==nd and insert_at is None:

            # We've hit the first 'system' path entry, so added entries go here

            insert_at = len(new_path)

        if np in known_paths or insert_at is None:

            new_path.append(item)

        else:

            # new path after the insert point, back-insert it

            new_path.insert(insert_at, item)

            insert_at += 1

    sys.path[:] = new_path

import sys

import os

import __builtin__

def makepath(*paths):

    dir = os.path.abspath(os.path.join(*paths))

    return dir, os.path.normcase(dir)

def abs__file__():

    """Set all module' __file__ attribute to an absolute path"""

    for m in sys.modules.values():

        try:

            m.__file__ = os.path.abspath(m.__file__)

        except AttributeError:

            continue

try:

    set

except NameError:

    class set:

        def __init__(self, args=()):

            self.d = {}

            for v in args:

                self.d[v] = None

        def __contains__(self, key):

            return key in self.d

        def add(self, key):

            self.d[key] = None

def removeduppaths():

    """ Remove duplicate entries from sys.path along with making them

    absolute"""

    # This ensures that the initial path provided by the interpreter contains

    # only absolute pathnames, even if we're running from the build directory.

    L = []

    known_paths = set()

    for dir in sys.path:

        # Filter out duplicate paths (on case-insensitive file systems also

        # if they only differ in case); turn relative paths into absolute

        # paths.

        dir, dircase = makepath(dir)

        if not dircase in known_paths:

            L.append(dir)

            known_paths.add(dircase)

    sys.path[:] = L

    return known_paths

def _init_pathinfo():

    """Return a set containing all existing directory entries from sys.path"""

    d = set()

    for dir in sys.path:

        try:

            if os.path.isdir(dir):

                dir, dircase = makepath(dir)

                d.add(dircase)

        except TypeError:

            continue

    return d

def addpackage(sitedir, name, known_paths, exclude_packages=()):

    """Add a new path to known_paths by combining sitedir and 'name' or execute

    sitedir if it starts with 'import'"""

    import fnmatch

    if known_paths is None:

        _init_pathinfo()

        reset = 1

    else:

        reset = 0

    fullname = os.path.join(sitedir, name)

    try:

        f = open(fullname, "rU")

    except IOError:

        return

    try:

        for line in f:

            if line.startswith("#"):

                continue

            found_exclude = False

            for exclude in exclude_packages:

                if exclude(line):

                    found_exclude = True

                    break

            if found_exclude:

                continue

            if line.startswith("import"):

                exec line

                continue

            line = line.rstrip()

            dir, dircase = makepath(sitedir, line)

            if not dircase in known_paths and os.path.exists(dir):

                sys.path.append(dir)

                known_paths.add(dircase)

    finally:

        f.close()

    if reset:

        known_paths = None

    return known_paths

def addsitedir(sitedir, known_paths=None, exclude_packages=()):

    """Add 'sitedir' argument to sys.path if missing and handle .pth files in

    'sitedir'"""

    if known_paths is None:

        known_paths = _init_pathinfo()

        reset = 1

    else:

        reset = 0

    sitedir, sitedircase = makepath(sitedir)

    if not sitedircase in known_paths:

        sys.path.append(sitedir)        # Add path component

    try:

        names = os.listdir(sitedir)

    except os.error:

        return

    names.sort()

    for name in names:

        if name.endswith(os.extsep + "pth"):

            addpackage(sitedir, name, known_paths,

                       exclude_packages=exclude_packages)

    if reset:

        known_paths = None

    return known_paths

def addsitepackages(known_paths):

    """Add site-packages (and possibly site-python) to sys.path"""

    prefixes = [os.path.join(sys.prefix, "local"), sys.prefix]

    if sys.exec_prefix != sys.prefix:

        prefixes.append(os.path.join(sys.exec_prefix, "local"))

    for prefix in prefixes:

        if prefix:

            if sys.platform in ('os2emx', 'riscos'):

                sitedirs = [os.path.join(prefix, "Lib", "site-packages")]

            elif os.sep == '/':

                sitedirs = [os.path.join(prefix,

                                         "lib",

                                         "python" + sys.version[:3],

                                         "site-packages"),

                            os.path.join(prefix, "lib", "site-python")]

                try:

                    # sys.getobjects only available in --with-pydebug build

                    # pylint: disable-msg=E1101

                    sys.getobjects

                    sitedirs.insert(0, os.path.join(sitedirs[0], 'debug'))

                except AttributeError:

                    pass

            else:

                sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")]

            if sys.platform == 'darwin':

                sitedirs.append( os.path.join('/opt/local', 'lib', 'python' + sys.version[:3], 'site-packages') )

                # for framework builds *only* we add the standard Apple

                # locations. Currently only per-user, but /Library and

                # /Network/Library could be added too

                if 'Python.framework' in prefix:

                    home = os.environ.get('HOME')

                    if home:

                        sitedirs.append(

                            os.path.join(home,

                                         'Library',

                                         'Python',

                                         sys.version[:3],

                                         'site-packages'))

            for sitedir in sitedirs:

                if os.path.isdir(sitedir):

                    addsitedir(sitedir, known_paths,

                               exclude_packages=[lambda line: 'setuptools' in line])

    return None

def setquit():

    """Define new built-ins 'quit' and 'exit'.

    These are simply strings that display a hint on how to exit.

    """

    if os.sep == ':':

        exit = 'Use Cmd-Q to quit.'

    elif os.sep == '\\':

        exit = 'Use Ctrl-Z plus Return to exit.'

    else:

        exit = 'Use Ctrl-D (i.e. EOF) to exit.'

    __builtin__.quit = __builtin__.exit = exit

class _Printer(object):

    """interactive prompt objects for printing the license text, a list of

    contributors and the copyright notice."""

    MAXLINES = 23

    def __init__(self, name, data, files=(), dirs=()):

        self.__name = name

        self.__data = data

        self.__files = files

        self.__dirs = dirs

        self.__lines = None

    def __setup(self):

        if self.__lines:

            return

        data = None

        for dir in self.__dirs:

            for filename in self.__files:

                filename = os.path.join(dir, filename)

                try:

                    fp = file(filename, "rU")

                    data = fp.read()

                    fp.close()

                    break

                except IOError:

                    pass

            if data:

                break

        if not data:

            data = self.__data

        self.__lines = data.split('\n')

        self.__linecnt = len(self.__lines)

    def __repr__(self):

        self.__setup()

        if len(self.__lines) <= self.MAXLINES:

            return "\n".join(self.__lines)

        else:

            return "Type %s() to see the full %s text" % ((self.__name,)*2)

    def __call__(self):

        self.__setup()

        prompt = 'Hit Return for more, or q (and Return) to quit: '

        lineno = 0

        while 1:

            try:

                for i in range(lineno, lineno + self.MAXLINES):

                    print self.__lines[i]

            except IndexError:

                break

            else:

                lineno += self.MAXLINES

                key = None

                while key is None:

                    key = raw_input(prompt)

                    if key not in ('', 'q'):

                        key = None

                if key == 'q':

                    break

def setcopyright():

    """Set 'copyright' and 'credits' in __builtin__"""

    __builtin__.copyright = _Printer("copyright", sys.copyright)

    if sys.platform[:4] == 'java':

        __builtin__.credits = _Printer(

            "credits",

            "Jython is maintained by the Jython developers (www.jython.org).")

    else:

        __builtin__.credits = _Printer("credits", """\

    Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands

    for supporting Python development.  See www.python.org for more information.""")

    here = os.path.dirname(os.__file__)

    __builtin__.license = _Printer(

        "license", "See http://www.python.org/%.3s/license.html" % sys.version,

        ["LICENSE.txt", "LICENSE"],

        [os.path.join(here, os.pardir), here, os.curdir])

class _Helper(object):

    """Define the built-in 'help'.

    This is a wrapper around pydoc.help (with a twist).

    """

    def __repr__(self):

        return "Type help() for interactive help, " \

               "or help(object) for help about object."

    def __call__(self, *args, **kwds):

        import pydoc

        return pydoc.help(*args, **kwds)

def sethelper():

    __builtin__.help = _Helper()

def aliasmbcs():

    """On Windows, some default encodings are not provided by Python,

    while they are always available as "mbcs" in each locale. Make

    them usable by aliasing to "mbcs" in such a case."""

    if sys.platform == 'win32':

        import locale, codecs

        enc = locale.getdefaultlocale()[1]

        if enc.startswith('cp'):            # "cp***" ?

            try:

                codecs.lookup(enc)

            except LookupError:

                import encodings

                encodings._cache[enc] = encodings._unknown

                encodings.aliases.aliases[enc] = 'mbcs'

def setencoding():

    """Set the string encoding used by the Unicode implementation.  The

    default is 'ascii', but if you're willing to experiment, you can

    change this."""

    encoding = "ascii" # Default value set by _PyUnicode_Init()

    if 0:

        # Enable to support locale aware default string encodings.

        import locale

        loc = locale.getdefaultlocale()

        if loc[1]:

            encoding = loc[1]

    if 0:

        # Enable to switch off string to Unicode coercion and implicit

        # Unicode to string conversion.

        encoding = "undefined"

    if encoding != "ascii":

        # On Non-Unicode builds this will raise an AttributeError...

        sys.setdefaultencoding(encoding) # Needs Python Unicode build !

def execsitecustomize():

    """Run custom site specific code, if available."""

    try:

        import sitecustomize

    except ImportError:

        pass

def fixup_setuptools():

    """Make sure our setuptools monkeypatch is in place"""

    for i in range(len(sys.path)):

        if sys.path[i].find('setuptools') != -1:

            path = sys.path[i]

            del sys.path[i]

            sys.path.append(path)

def main():

    abs__file__()

    paths_in_sys = removeduppaths()

    if include_site_packages:

        paths_in_sys = addsitepackages(paths_in_sys)

    setquit()

    setcopyright()

    sethelper()

    aliasmbcs()

    setencoding()

    execsitecustomize()

    # Remove sys.setdefaultencoding() so that users cannot change the

    # encoding after initialization.  The test for presence is needed when

    # this module is run as a script, because this code is executed twice.

    if hasattr(sys, "setdefaultencoding"):

        del sys.setdefaultencoding

    __boot()

    fixup_setuptools()

include_site_packages = False

main()