87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
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import os, sys, imp
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import portage
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from portage.const import VDB_PATH
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from portage import _encodings
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from portage import _shell_quote
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from portage import _unicode_decode
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from portage import _unicode_encode
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# Stolen from the ebuild command
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def package_from_ebuild(ebuild):
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pf = None
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if ebuild.endswith(".ebuild"):
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pf = os.path.basename(ebuild)[:-7]
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else:
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return False
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if not os.path.isabs(ebuild):
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mycwd = os.getcwd()
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# Try to get the non-canonical path from the PWD evironment variable,
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# since the canonical path returned from os.getcwd() may may be
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# unusable in cases where the directory stucture is built from
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# symlinks.
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pwd = os.environ.get('PWD', '')
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if sys.hexversion < 0x3000000:
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pwd = _unicode_decode(pwd, encoding=_encodings['content'],
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errors='strict')
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if pwd and pwd != mycwd and \
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os.path.realpath(pwd) == mycwd:
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mycwd = portage.normalize_path(pwd)
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ebuild = os.path.join(mycwd, ebuild)
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ebuild = portage.normalize_path(ebuild)
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# portdbapi uses the canonical path for the base of the portage tree, but
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# subdirectories of the base can be built from symlinks (like crossdev
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# does).
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ebuild_portdir = os.path.realpath(
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os.path.dirname(os.path.dirname(os.path.dirname(ebuild))))
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ebuild = os.path.join(ebuild_portdir, *ebuild.split(os.path.sep)[-3:])
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vdb_path = os.path.join(portage.settings['ROOT'], VDB_PATH)
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# Make sure that portdb.findname() returns the correct ebuild.
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if ebuild_portdir != vdb_path and \
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ebuild_portdir not in portage.portdb.porttrees:
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if sys.hexversion >= 0x3000000:
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os.environ["PORTDIR_OVERLAY"] = \
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os.environ.get("PORTDIR_OVERLAY", "") + \
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" " + _shell_quote(ebuild_portdir)
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else:
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os.environ["PORTDIR_OVERLAY"] = \
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os.environ.get("PORTDIR_OVERLAY", "") + \
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" " + _unicode_encode(_shell_quote(ebuild_portdir),
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encoding=_encodings['content'], errors='strict')
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portage.close_portdbapi_caches()
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imp.reload(portage)
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del portage.portdb.porttrees[1:]
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if ebuild_portdir != portage.portdb.porttree_root:
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portage.portdb.porttrees.append(ebuild_portdir)
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if not os.path.exists(ebuild):
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return False
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ebuild_split = ebuild.split("/")
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cpv = "%s/%s" % (ebuild_split[-3], pf)
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if not portage.catpkgsplit(cpv):
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return False
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if ebuild.startswith(os.path.join(portage.root, portage.const.VDB_PATH)):
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mytree = "vartree"
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portage_ebuild = portage.db[portage.root][mytree].dbapi.findname(cpv)
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if os.path.realpath(portage_ebuild) != ebuild:
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return False
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else:
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mytree = "porttree"
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portage_ebuild = portage.portdb.findname(cpv)
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if not portage_ebuild or portage_ebuild != ebuild:
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return False
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return cpv
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