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author | Peter Kjellerstedt <peter.kjellerstedt@axis.com> | 2020-12-09 18:05:07 +0100 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2020-12-20 00:03:00 +0000 |
commit | 282b19c0e27488ec119f00fb2542ffdc1af54e2a (patch) | |
tree | 94ec56b1e6d45fc4ce15017c81795dd23dbcb6ac /meta/lib/oe/path.py | |
parent | c04f04e714ede5d3904058ec82459139ed5e42fa (diff) | |
download | openembedded-core-282b19c0e27488ec119f00fb2542ffdc1af54e2a.tar.gz |
lib/oe/path: Add canonicalize()
oe.path.canonicalize() is used to canonicalize paths (i.e., remove
symbolic links and "..", and make them absolute). It takes a string
with paths separated by commas, and returns the canonicalized path in
the same format.
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/lib/oe/path.py')
-rw-r--r-- | meta/lib/oe/path.py | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/meta/lib/oe/path.py b/meta/lib/oe/path.py index 082972457b..c8d8ad05b9 100644 --- a/meta/lib/oe/path.py +++ b/meta/lib/oe/path.py @@ -320,3 +320,24 @@ def which_wild(pathname, path=None, mode=os.F_OK, *, reverse=False, candidates=F return files +def canonicalize(paths, sep=','): + """Given a string with paths (separated by commas by default), expand + each path using os.path.realpath() and return the resulting paths as a + string (separated using the same separator a the original string). + """ + # Ignore paths containing "$" as they are assumed to be unexpanded bitbake + # variables. Normally they would be ignored, e.g., when passing the paths + # through the shell they would expand to empty strings. However, when they + # are passed through os.path.realpath(), it will cause them to be prefixed + # with the absolute path to the current directory and thus not be empty + # anymore. + # + # Also maintain trailing slashes, as the paths may actually be used as + # prefixes in sting compares later on, where the slashes then are important. + canonical_paths = [] + for path in (paths or '').split(sep): + if '$' not in path: + trailing_slash = path.endswith('/') and '/' or '' + canonical_paths.append(os.path.realpath(path) + trailing_slash) + + return sep.join(canonical_paths) |