[pypy-commit] pypy ppc-jit-backend: Add autopath.py file.
edelsohn
noreply at buildbot.pypy.org
Fri Aug 24 17:05:32 CEST 2012
Author: edelsohn
Branch: ppc-jit-backend
Changeset: r56839:ae0b97c36a69
Date: 2012-08-24 11:04 -0400
http://bitbucket.org/pypy/pypy/changeset/ae0b97c36a69/
Log: Add autopath.py file.
diff --git a/pypy/jit/backend/ppc/tool/autopath.py b/pypy/jit/backend/ppc/tool/autopath.py
new file mode 100644
--- /dev/null
+++ b/pypy/jit/backend/ppc/tool/autopath.py
@@ -0,0 +1,131 @@
+"""
+self cloning, automatic path configuration
+
+copy this into any subdirectory of pypy from which scripts need
+to be run, typically all of the test subdirs.
+The idea is that any such script simply issues
+
+ import autopath
+
+and this will make sure that the parent directory containing "pypy"
+is in sys.path.
+
+If you modify the master "autopath.py" version (in pypy/tool/autopath.py)
+you can directly run it which will copy itself on all autopath.py files
+it finds under the pypy root directory.
+
+This module always provides these attributes:
+
+ pypydir pypy root directory path
+ this_dir directory where this autopath.py resides
+
+"""
+
+def __dirinfo(part):
+ """ return (partdir, this_dir) and insert parent of partdir
+ into sys.path. If the parent directories don't have the part
+ an EnvironmentError is raised."""
+
+ import sys, os
+ try:
+ head = this_dir = os.path.realpath(os.path.dirname(__file__))
+ except NameError:
+ head = this_dir = os.path.realpath(os.path.dirname(sys.argv[0]))
+
+ error = None
+ while head:
+ partdir = head
+ head, tail = os.path.split(head)
+ if tail == part:
+ checkfile = os.path.join(partdir, os.pardir, 'pypy', '__init__.py')
+ if not os.path.exists(checkfile):
+ error = "Cannot find %r" % (os.path.normpath(checkfile),)
+ break
+ else:
+ error = "Cannot find the parent directory %r of the path %r" % (
+ partdir, this_dir)
+ if not error:
+ # check for bogus end-of-line style (e.g. files checked out on
+ # Windows and moved to Unix)
+ f = open(__file__.replace('.pyc', '.py'), 'r')
+ data = f.read()
+ f.close()
+ if data.endswith('\r\n') or data.endswith('\r'):
+ error = ("Bad end-of-line style in the .py files. Typically "
+ "caused by a zip file or a checkout done on Windows and "
+ "moved to Unix or vice-versa.")
+ if error:
+ raise EnvironmentError("Invalid source tree - bogus checkout! " +
+ error)
+
+ pypy_root = os.path.join(head, '')
+ try:
+ sys.path.remove(head)
+ except ValueError:
+ pass
+ sys.path.insert(0, head)
+
+ munged = {}
+ for name, mod in sys.modules.items():
+ if '.' in name:
+ continue
+ fn = getattr(mod, '__file__', None)
+ if not isinstance(fn, str):
+ continue
+ newname = os.path.splitext(os.path.basename(fn))[0]
+ if not newname.startswith(part + '.'):
+ continue
+ path = os.path.join(os.path.dirname(os.path.realpath(fn)), '')
+ if path.startswith(pypy_root) and newname != part:
+ modpaths = os.path.normpath(path[len(pypy_root):]).split(os.sep)
+ if newname != '__init__':
+ modpaths.append(newname)
+ modpath = '.'.join(modpaths)
+ if modpath not in sys.modules:
+ munged[modpath] = mod
+
+ for name, mod in munged.iteritems():
+ if name not in sys.modules:
+ sys.modules[name] = mod
+ if '.' in name:
+ prename = name[:name.rfind('.')]
+ postname = name[len(prename)+1:]
+ if prename not in sys.modules:
+ __import__(prename)
+ if not hasattr(sys.modules[prename], postname):
+ setattr(sys.modules[prename], postname, mod)
+
+ return partdir, this_dir
+
+def __clone():
+ """ clone master version of autopath.py into all subdirs """
+ from os.path import join, walk
+ if not this_dir.endswith(join('pypy','tool')):
+ raise EnvironmentError("can only clone master version "
+ "'%s'" % join(pypydir, 'tool',_myname))
+
+
+ def sync_walker(arg, dirname, fnames):
+ if _myname in fnames:
+ fn = join(dirname, _myname)
+ f = open(fn, 'rwb+')
+ try:
+ if f.read() == arg:
+ print "checkok", fn
+ else:
+ print "syncing", fn
+ f = open(fn, 'w')
+ f.write(arg)
+ finally:
+ f.close()
+ s = open(join(pypydir, 'tool', _myname), 'rb').read()
+ walk(pypydir, sync_walker, s)
+
+_myname = 'autopath.py'
+
+# set guaranteed attributes
+
+pypydir, this_dir = __dirinfo('pypy')
+
+if __name__ == '__main__':
+ __clone()
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