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#!/usr/bin/python |
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"""CLI usage: ``pfind path filename`` will find the closest ancestor directory |
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conataining filename (used for finding syncspec.txt and config files). |
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""" |
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import os |
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import sys |
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def pfindall(path, *fnames): |
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"""Find all fnames in the closest ancestor directory. |
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For the purposes of this function, we are our own closest ancestor. |
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I.e. given the structure:: |
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. |
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`-- a |
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|-- b |
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| |-- c |
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| | `-- x.txt |
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| `-- x.txt |
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`-- y.txt |
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the call:: |
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dict(pfindall('a/b/c', 'x.txt', 'y.txt')) |
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will return:: |
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{ |
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'x.txt': 'a/b/c/x.txt', |
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'y.txt': 'a/y.txt' |
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} |
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``a/b/x.txt`` is not returned, since ``a/b/c/x.txt`` is the "closest" |
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``x.txt`` when starting from ``a/b/c`` (note: pfindall only looks |
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"upwards", ie. towards the root). |
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""" |
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wd = os.path.abspath(path) |
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assert os.path.isdir(wd) |
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def parents(): |
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"""yield successive parent directories |
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""" |
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parent = wd |
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yield parent |
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while 1: |
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parent, dirname = os.path.split(parent) |
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if not dirname: |
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return |
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yield parent |
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for d in parents(): |
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curdirlist = os.listdir(d) |
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for fname in fnames: |
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if fname in curdirlist: |
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yield fname, os.path.join(d, fname) |
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def pfind(path, *fnames): |
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"""Find the first fname in the closest ancestor directory. |
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For the purposes of this function, we are our own closest ancestor, i.e. |
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given the structure:: |
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/srv |
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|-- myapp |
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| |-- __init__.py |
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| `-- myapp.py |
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`-- setup.py |
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then both ``pfind('/srv', 'setup.py')`` and |
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``pfind('/srv/myapp', 'setup.py')`` will return ``/srv/setup.py`` |
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""" |
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for _fname, fpath in pfindall(path, *fnames): |
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return fpath |
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return None |
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if __name__ == "__main__": # pragma: nocover |
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_path, filename = sys.argv[1], sys.argv[2] |
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print pfind(_path, filename) |
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datakortet /
dkfileutils
