| # (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org) |
| # Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php |
| |
| import sys |
| import os |
| |
| def find_package(dir): |
| """ |
| Given a directory, finds the equivalent package name. If it |
| is directly in sys.path, returns ''. |
| """ |
| dir = os.path.abspath(dir) |
| orig_dir = dir |
| path = map(os.path.abspath, sys.path) |
| packages = [] |
| last_dir = None |
| while 1: |
| if dir in path: |
| return '.'.join(packages) |
| packages.insert(0, os.path.basename(dir)) |
| dir = os.path.dirname(dir) |
| if last_dir == dir: |
| raise ValueError( |
| "%s is not under any path found in sys.path" % orig_dir) |
| last_dir = dir |
| |
