buildframework/helium/external/python/lib/common/site.py
changeset 217 0f5e3a7fb6af
parent 179 d8ac696cc51f
--- a/buildframework/helium/external/python/lib/common/site.py	Fri Feb 05 11:59:41 2010 +0000
+++ b/buildframework/helium/external/python/lib/common/site.py	Thu Mar 04 15:10:37 2010 +0200
@@ -1,394 +1,82 @@
-# 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()
+def __boot():
+    import sys, imp, os, os.path   
+    PYTHONPATH = os.environ.get('PYTHONPATH')
+    if PYTHONPATH is None or (sys.platform=='win32' and not PYTHONPATH):
+        PYTHONPATH = []
+    else:
+        PYTHONPATH = PYTHONPATH.split(os.pathsep)
+
+    pic = getattr(sys,'path_importer_cache',{})
+    stdpath = sys.path[len(PYTHONPATH):]
+    mydir = os.path.dirname(__file__)
+    #print "searching",stdpath,sys.path
+
+    for item in stdpath:
+        if item==mydir or not item:
+            continue    # skip if current dir. on Windows, or my own directory
+        importer = pic.get(item)
+        if importer is not None:
+            loader = importer.find_module('site')
+            if loader is not None:
+                # This should actually reload the current module
+                loader.load_module('site')
+                break
+        else:
+            try:
+                stream, path, descr = imp.find_module('site',[item])
+            except ImportError:
+                continue
+            if stream is None:
+                continue
+            try:
+                # This should actually reload the current module
+                imp.load_module('site',stream,path,descr)
+            finally:
+                stream.close()
+            break
+    else:
+        raise ImportError("Couldn't find the real 'site' module")
+
+    #print "loaded", __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)
+
+    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
+
+if __name__=='site':    
+    __boot()
+    del __boot
+    
+
+
+
+
+
+
+