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# coding=utf8
from __future__ import absolute_import
import time
def by_first_commit(item):
"""Order two changesets by their first commit date."""
return item['first_commit']
def convert_blame_to_changesets(blame_json):
"""Convert a blame dict into a list of changesets.
The blame information in `blame_json` should be a dict of the following
structure:
{
'authors': [
'A.N. Author <author@example.com>',
],
'blame': {
'path/one': {
'key1': [0, 1346095921.0],
},
}
}
It will be transformed into a list of changesets which can be fed into
`InternalContext.serialize_changeset`:
[
{
'author': 'A.N. Author <author@example.com>',
'first_commit': 1346095921.0,
'changes': {
('path/one', 'key1'),
}
},
]
"""
now = time.time()
changesets = [
{
'author': author,
'first_commit': now,
'changes': set()
} for author in blame_json['authors']
]
for path, keys_info in blame_json['blame'].items():
for key, (author_index, timestamp) in keys_info.items():
changeset = changesets[author_index]
changeset['changes'].add((path, key))
if timestamp < changeset['first_commit']:
changeset['first_commit'] = timestamp
return sorted(changesets, key=by_first_commit)
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