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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ""" dyld emulation """ import os from ctypes.macholib.framework import framework_info from ctypes.macholib.dylib import dylib_info from itertools import * try: from _ctypes import _dyld_shared_cache_contains_path except ImportError: def _dyld_shared_cache_contains_path(*args): raise NotImplementedError __all__ = [ 'dyld_find', 'framework_find', 'framework_info', 'dylib_info', ] # These are the defaults as per man dyld(1) # DEFAULT_FRAMEWORK_FALLBACK = [ os.path.expanduser("~/Library/Frameworks"), "/Library/Frameworks", "/Network/Library/Frameworks", "/System/Library/Frameworks", ] DEFAULT_LIBRARY_FALLBACK = [ os.path.expanduser("~/lib"), "/usr/local/lib", "/lib", "/usr/lib", ] def dyld_env(env, var): if env is None: env = os.environ rval = env.get(var) if rval is None: return [] return rval.split(':') def dyld_image_suffix(env=None): if env is None: env = os.environ return env.get('DYLD_IMAGE_SUFFIX') def dyld_framework_path(env=None): return dyld_env(env, 'DYLD_FRAMEWORK_PATH') def dyld_library_path(env=None): return dyld_env(env, 'DYLD_LIBRARY_PATH') def dyld_fallback_framework_path(env=None): return dyld_env(env, 'DYLD_FALLBACK_FRAMEWORK_PATH') def dyld_fallback_library_path(env=None): return dyld_env(env, 'DYLD_FALLBACK_LIBRARY_PATH') def dyld_image_suffix_search(iterator, env=None): """For a potential path iterator, add DYLD_IMAGE_SUFFIX semantics""" suffix = dyld_image_suffix(env) if suffix is None: return iterator def _inject(iterator=iterator, suffix=suffix): for path in iterator: if path.endswith('.dylib'): yield path[:-len('.dylib')] + suffix + '.dylib' else: yield path + suffix yield path return _inject() def dyld_override_search(name, env=None): # If DYLD_FRAMEWORK_PATH is set and this dylib_name is a # framework name, use the first file that exists in the framework # path if any. If there is none go on to search the DYLD_LIBRARY_PATH # if any. framework = framework_info(name) if framework is not None: for path in dyld_framework_path(env): yield os.path.join(path, framework['name']) # If DYLD_LIBRARY_PATH is set then use the first file that exists # in the path. If none use the original name. for path in dyld_library_path(env): yield os.path.join(path, os.path.basename(name)) def dyld_executable_path_search(name, executable_path=None): # If we haven't done any searching and found a library and the # dylib_name starts with "@executable_path/" then construct the # library name. if name.startswith('@executable_path/') and executable_path is not None: yield os.path.join(executable_path, name[len('@executable_path/'):]) def dyld_default_search(name, env=None): yield name framework = framework_info(name) if framework is not None: fallback_framework_path = dyld_fallback_framework_path(env) for path in fallback_framework_path: yield os.path.join(path, framework['name']) fallback_library_path = dyld_fallback_library_path(env) for path in fallback_library_path: yield os.path.join(path, os.path.basename(name)) if framework is not None and not fallback_framework_path: for path in DEFAULT_FRAMEWORK_FALLBACK: yield os.path.join(path, framework['name']) if not fallback_library_path: for path in DEFAULT_LIBRARY_FALLBACK: yield os.path.join(path, os.path.basename(name)) def dyld_find(name, executable_path=None, env=None): """ Find a library or framework using dyld semantics """ for path in dyld_image_suffix_search(chain( dyld_override_search(name, env), dyld_executable_path_search(name, executable_path), dyld_default_search(name, env), ), env): if os.path.isfile(path): return path try: if _dyld_shared_cache_contains_path(path): return path except NotImplementedError: pass raise ValueError("dylib %s could not be found" % (name,)) def framework_find(fn, executable_path=None, env=None): """ Find a framework using dyld semantics in a very loose manner. Will take input such as: Python Python.framework Python.framework/Versions/Current """ error = None try: return dyld_find(fn, executable_path=executable_path, env=env) except ValueError as e: error = e fmwk_index = fn.rfind('.framework') if fmwk_index == -1: fmwk_index = len(fn) fn += '.framework' fn = os.path.join(fn, os.path.basename(fn[:fmwk_index])) try: return dyld_find(fn, executable_path=executable_path, env=env) except ValueError: raise error finally: error = None def test_dyld_find(): env = {} assert dyld_find('libSystem.dylib') == '/usr/lib/libSystem.dylib' assert dyld_find('System.framework/System') == '/System/Library/Frameworks/System.framework/System' if __name__ == '__main__': test_dyld_find()