| 1 | """ |
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| 2 | Append module search paths for third-party packages to sys.path. |
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| 3 | |
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| 4 | This is stripped down and customized for use in py2app applications |
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| 5 | """ |
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| 6 | |
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| 7 | import sys |
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| 8 | # os is actually in the zip, so we need to do this here. |
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| 9 | # we can't call it python24.zip because zlib is not a built-in module (!) |
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| 10 | _libdir = '/lib/python' + sys.version[:3] |
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| 11 | _parent = '/'.join(__file__.split('/')[:-1]) |
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| 12 | if not _parent.endswith(_libdir): |
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| 13 | _parent += _libdir |
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| 14 | sys.path.append(_parent + '/site-packages.zip') |
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| 15 | sys.path.insert(0, _parent + '/lib-dynload') |
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| 16 | import os |
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| 17 | |
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| 18 | |
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| 19 | def makepath(*paths): |
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| 20 | dir = os.path.abspath(os.path.join(*paths)) |
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| 21 | return dir, os.path.normcase(dir) |
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| 22 | |
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| 23 | for m in sys.modules.values(): |
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| 24 | f = getattr(m, '__file__', None) |
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| 25 | if isinstance(f, basestring) and os.path.exists(f): |
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| 26 | m.__file__ = os.path.abspath(m.__file__) |
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| 27 | del m |
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| 28 | |
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| 29 | # This ensures that the initial path provided by the interpreter contains |
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| 30 | # only absolute pathnames, even if we're running from the build directory. |
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| 31 | L = [] |
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| 32 | _dirs_in_sys_path = {} |
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| 33 | dir = dircase = None # sys.path may be empty at this point |
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| 34 | for dir in sys.path: |
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| 35 | # Filter out duplicate paths (on case-insensitive file systems also |
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| 36 | # if they only differ in case); turn relative paths into absolute |
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| 37 | # paths. |
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| 38 | dir, dircase = makepath(dir) |
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| 39 | if not dircase in _dirs_in_sys_path: |
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| 40 | L.append(dir) |
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| 41 | _dirs_in_sys_path[dircase] = 1 |
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| 42 | sys.path[:] = L |
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| 43 | del dir, dircase, L |
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| 44 | _dirs_in_sys_path = None |
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| 45 | |
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| 46 | def _init_pathinfo(): |
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| 47 | global _dirs_in_sys_path |
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| 48 | _dirs_in_sys_path = d = {} |
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| 49 | for dir in sys.path: |
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| 50 | if dir and not os.path.isdir(dir): |
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| 51 | continue |
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| 52 | dir, dircase = makepath(dir) |
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| 53 | d[dircase] = 1 |
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| 54 | |
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| 55 | def addsitedir(sitedir): |
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| 56 | global _dirs_in_sys_path |
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| 57 | if _dirs_in_sys_path is None: |
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| 58 | _init_pathinfo() |
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| 59 | reset = 1 |
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| 60 | else: |
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| 61 | reset = 0 |
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| 62 | sitedir, sitedircase = makepath(sitedir) |
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| 63 | if not sitedircase in _dirs_in_sys_path: |
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| 64 | sys.path.append(sitedir) # Add path component |
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| 65 | try: |
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| 66 | names = os.listdir(sitedir) |
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| 67 | except os.error: |
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| 68 | return |
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| 69 | names.sort() |
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| 70 | for name in names: |
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| 71 | if name[-4:] == os.extsep + "pth": |
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| 72 | addpackage(sitedir, name) |
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| 73 | if reset: |
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| 74 | _dirs_in_sys_path = None |
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| 75 | |
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| 76 | def addpackage(sitedir, name): |
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| 77 | global _dirs_in_sys_path |
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| 78 | if _dirs_in_sys_path is None: |
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| 79 | _init_pathinfo() |
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| 80 | reset = 1 |
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| 81 | else: |
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| 82 | reset = 0 |
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| 83 | fullname = os.path.join(sitedir, name) |
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| 84 | try: |
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| 85 | f = open(fullname) |
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| 86 | except IOError: |
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| 87 | return |
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| 88 | while 1: |
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| 89 | dir = f.readline() |
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| 90 | if not dir: |
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| 91 | break |
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| 92 | if dir[0] == '#': |
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| 93 | continue |
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| 94 | if dir.startswith("import"): |
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| 95 | exec dir |
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| 96 | continue |
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| 97 | if dir[-1] == '\n': |
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| 98 | dir = dir[:-1] |
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| 99 | dir, dircase = makepath(sitedir, dir) |
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| 100 | if not dircase in _dirs_in_sys_path and os.path.exists(dir): |
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| 101 | sys.path.append(dir) |
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| 102 | _dirs_in_sys_path[dircase] = 1 |
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| 103 | if reset: |
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| 104 | _dirs_in_sys_path = None |
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| 105 | |
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| 106 | |
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| 107 | #sys.setdefaultencoding('utf-8') |
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| 108 | |
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| 109 | # |
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| 110 | # Run custom site specific code, if available. |
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| 111 | # |
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| 112 | try: |
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| 113 | import sitecustomize |
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| 114 | except ImportError: |
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| 115 | pass |
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| 116 | |
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| 117 | # |
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| 118 | # Remove sys.setdefaultencoding() so that users cannot change the |
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| 119 | # encoding after initialization. The test for presence is needed when |
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| 120 | # this module is run as a script, because this code is executed twice. |
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| 121 | # |
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| 122 | if hasattr(sys, "setdefaultencoding"): |
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| 123 | del sys.setdefaultencoding |
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