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author | Ross Burton <ross@openedhand.com> | 2008-05-01 10:59:00 +0000 |
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committer | Ross Burton <ross@openedhand.com> | 2008-05-01 10:59:00 +0000 |
commit | a74658d4ed04f39208ebb965fdb8d298b150ef82 (patch) | |
tree | b940e7f261b99455857e53fcbb0cfaf7c4456f80 /bitbake/lib/bb/utils.py | |
parent | d85e5ffbbd3c5150bc838b36724ff05672570991 (diff) | |
download | ast2050-yocto-poky-a74658d4ed04f39208ebb965fdb8d298b150ef82.zip ast2050-yocto-poky-a74658d4ed04f39208ebb965fdb8d298b150ef82.tar.gz |
Add md5_file and sha256_file checksum methods which use the builtin Python checksum code
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4385 311d38ba-8fff-0310-9ca6-ca027cbcb966
Diffstat (limited to 'bitbake/lib/bb/utils.py')
-rw-r--r-- | bitbake/lib/bb/utils.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py index 9702c8c..19327b7 100644 --- a/bitbake/lib/bb/utils.py +++ b/bitbake/lib/bb/utils.py @@ -237,3 +237,34 @@ def unlockfile(lf): fcntl.flock(lf.fileno(), fcntl.LOCK_UN) lf.close +def md5_file(filename): + """ + Return the hex string representation of the MD5 checksum of filename. + """ + try: + import hashlib + m = hashlib.md5() + except ImportError: + import md5 + m = md5.new() + + for line in open(filename): + m.update(line) + return m.hexdigest() + +def sha256_file(filename): + """ + Return the hex string representation of the 256-bit SHA checksum of + filename. On Python 2.4 this will return None, so callers will need to + handle that by either skipping SHA checks, or running a standalone sha256sum + binary. + """ + try: + import hashlib + except ImportError: + return None + + s = hashlib.sha256() + for line in open(filename): + s.update(line) + return s.hexdigest() |