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authorPaul Eggleton <paul.eggleton@linux.intel.com>2017-04-07 09:52:05 +1200
committerRichard Purdie <richard.purdie@linuxfoundation.org>2017-04-10 23:00:32 +0100
commit445e622b237edebbcfd02044b2b25a311a91af8f (patch)
tree0b68678a2601000fdb1f721c82a4977ee327effe /bitbake/lib/bb/siggen.py
parentd88a4ade7e755cf9dd4ab2baed70cddcf4314330 (diff)
downloadpoky-445e622b237edebbcfd02044b2b25a311a91af8f.tar.gz
bitbake: lib/bb/siggen: show a diff when dumping changes to multi-line values
When dumping changes to signatures e.g. output of bitbake -s printdiff, if for example a function has changed, it's much more readable to see a unified diff of the changes rather than just printing the old function followed by the new function, so use difflib to do that. Note: I elected to keep to one item in the returned list per change, rather than one line per line of output, so that the caller can still look at changes individually if needed. Thus I've added some handling to bitbake-diffsigs to split the change into lines so that each line is displayed indented. (Bitbake rev: 4d254ae63a35231c98e3f73f669b040ed1144042) Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake/lib/bb/siggen.py')
-rw-r--r--bitbake/lib/bb/siggen.py12
1 files changed, 11 insertions, 1 deletions
diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index f47af6ded8..f497fb9caf 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -5,6 +5,7 @@ import re
5import tempfile 5import tempfile
6import pickle 6import pickle
7import bb.data 7import bb.data
8import difflib
8from bb.checksum import FileChecksumCache 9from bb.checksum import FileChecksumCache
9 10
10logger = logging.getLogger('BitBake.SigGen') 11logger = logging.getLogger('BitBake.SigGen')
@@ -462,7 +463,16 @@ def compare_sigfiles(a, b, recursecb = None):
462 changed, added, removed = dict_diff(a_data['varvals'], b_data['varvals']) 463 changed, added, removed = dict_diff(a_data['varvals'], b_data['varvals'])
463 if changed: 464 if changed:
464 for dep in changed: 465 for dep in changed:
465 output.append("Variable %s value changed from '%s' to '%s'" % (dep, a_data['varvals'][dep], b_data['varvals'][dep])) 466 oldval = a_data['varvals'][dep]
467 newval = b_data['varvals'][dep]
468 if newval and oldval and ('\n' in oldval or '\n' in newval):
469 diff = difflib.unified_diff(oldval.splitlines(), newval.splitlines(), lineterm='')
470 # Cut off the first two lines, since we aren't interested in
471 # the old/new filename (they are blank anyway in this case)
472 difflines = list(diff)[2:]
473 output.append("Variable %s value changed:\n%s" % (dep, '\n'.join(difflines)))
474 else:
475 output.append("Variable %s value changed from '%s' to '%s'" % (dep, oldval, newval))
466 476
467 if not 'file_checksum_values' in a_data: 477 if not 'file_checksum_values' in a_data:
468 a_data['file_checksum_values'] = {} 478 a_data['file_checksum_values'] = {}