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author | Ross Burton <ross.burton@intel.com> | 2017-03-30 14:34:17 +0100 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-03-30 16:41:13 +0100 |
commit | c0b94f02f0cba7a424aaa16cf98c0f7a3f62b889 (patch) | |
tree | caed764dd2fd43f859a8c71f31a4d409f8aad919 /lib/bb/utils.py | |
parent | 6a917ec99d659e684b15fa8af94c325172676062 (diff) | |
download | bitbake-contrib-c0b94f02f0cba7a424aaa16cf98c0f7a3f62b889.tar.gz |
bb/utils: extend which() so it can look for just executables
Normally bb.utils.which() is used by the unpack code to find a file in a variety
of places, but it is useful as a slightly more powerful version of os.which().
Support this by allowing it to only return matches which are executable files,
instead of just the first filename that matches.
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'lib/bb/utils.py')
-rw-r--r-- | lib/bb/utils.py | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/bb/utils.py b/lib/bb/utils.py index d6bcfa37e..077fddc0e 100644 --- a/lib/bb/utils.py +++ b/lib/bb/utils.py @@ -899,11 +899,20 @@ def copyfile(src, dest, newmtime = None, sstat = None): newmtime = sstat[stat.ST_MTIME] return newmtime -def which(path, item, direction = 0, history = False): +def which(path, item, direction = 0, history = False, executable=False): """ - Locate a file in a PATH + Locate `item` in the list of paths `path` (colon separated string like $PATH). + If `direction` is non-zero then the list is reversed. + If `history` is True then the list of candidates also returned as result,history. + If `executable` is True then the candidate has to be an executable file, + otherwise the candidate simply has to exist. """ + if executable: + is_candidate = lambda p: os.path.isfile(p) and os.access(p, os.X_OK) + else: + is_candidate = lambda p: os.path.exists(p) + hist = [] paths = (path or "").split(':') if direction != 0: @@ -912,7 +921,7 @@ def which(path, item, direction = 0, history = False): for p in paths: next = os.path.join(p, item) hist.append(next) - if os.path.exists(next): + if is_candidate(next): if not os.path.isabs(next): next = os.path.abspath(next) if history: |