On Tue, 2010-07-20 at 14:10 +0200, Antonio Valentino wrote:
> > --------------------------
> > Then at runtime the unpackMetadata.py was the key:
> > import carchive
> > import sys
> > import os
> >
> > this = carchive.CArchive(sys.executable)
> > archives = os.environ['_MEIPASS2']
> > pkgs = ['wx', 'traits', 'traitswx', 'chaco', 'enthought', 'enable',
> > 'traitsgui'] for pkg in pkgs:
> > mp = this.openEmbedded('%s.pkg' % pkg)
> > targetdir = os.path.join(archives,pkg)
> > os.mkdir(targetdir)
> > print "Extracting %s ..." % pkg,
> > for fnm in mp.contents():
> > try:
> > stuff = mp.extract(fnm)[1]
> > outnm = os.path.join(targetdir, fnm)
> > dirnm = os.path.dirname(outnm)
> > if not os.path.exists(dirnm):
> > os.makedirs(dirnm)
> > open(outnm, 'wb').write(stuff)
> > except Exception, mex:
> > print mex
> > mp = None
> > sys.path.insert(0, targetdir)
> > if pkg == 'traitsgui':
> > imagepath = os.path.join(targetdir, 'enthought', 'traits',
> > 'ui', 'image', 'library')
> > os.environ['TRAITS_IMAGES'] = imagepath
> > os.putenv('TRAITS_IMAGES', imagepath)
> > print "ok"
> >
> > from resource_path_override import ResourcePathOverride
> > resource_override = ResourcePathOverride(archives)
> >
> > -------------------------------------
> > And then the custom ResourcePathOverride:
> > import sys
> > import os
> > """This class will extend the original resource_path function so that
> > it will always point to the archive_path instead of whatever was
> > frozen into it. WARNING: Do not create an instance of this class
> > before the archives have been extracted!
> > """
> > class ResourcePathOverride(object):
> > resource_path_orig = None
> > archive_path = None
> >
> > def __init__(self, archive_path):
> > import enthought.resource.resource_path #here, so that you can
> > import the module freely (at least in theory)
> > self.resource_path_orig =
> > enthought.resource.resource_path.resource_path self.archive_path =
> > archive_path enthought.resource.resource_path.resource_path =
> > self.resource_path
> >
> > def resource_path(self, level = 2):
> > path = self.resource_path_orig(level+1)
> > path = path.rsplit(''.join((os.path.sep, 'enthought',
> > os.path.sep)), 1) root = path[0].rsplit(os.path.sep, 1)
> > path = os.path.join(self.archive_path,
> > self.get_pkg_name(root[1]), 'enthought', path[1])
> > return path
> >
> > def get_pkg_name(self, path):
> > """This function must mirror the list in yasso.spec
> > """
> > if path.lower().startswith('traits-'):
> > return 'traits'
> > if path.lower().startswith('traitsgui'):
> > return 'traitsgui'
> > if path.lower().startswith('traitsbackendwx'):
> > return 'traitswx'
> > if path.lower().startswith('enable'):
> > return 'enable'
> > if path.lower().startswith('enthought'):
> > return 'enthought'
> > if path.lower().startswith('chaco'):
> > return 'chaco'
>
> This part is black magic.
> I wonder what Giovanni thinks about this solution and, most of all, if
> there are plans for an official pkg_resources support in pyinstaller.
The solution looks like it is on the right track, though it should be
generalized before being acceptable for PyInstaller.
The generic plan for pkg_resources I had in mind was to leverage its
hook mechanism to install a plugin into it to be able to dynamically
extract files from PyInstaller's pkg archive. This is just a generic
idea, and I don't know if it would really work.
--
Giovanni Bajo :: [email protected]
Develer S.r.l. :: http://www.develer.com
My Blog: http://giovanni.bajo.it
Last post: Compile-time Function Execution in D
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