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1# SPDX-License-Identifier: GPL-2.0+
2# Copyright (c) 2011 The Chromium OS Authors.
3#
4
5import re
6
7# Separates a tag: at the beginning of the subject from the rest of it
8re_subject_tag = re.compile('([^:\s]*):\s*(.*)')
9
10class Commit:
11    """Holds information about a single commit/patch in the series.
12
13    Args:
14        hash: Commit hash (as a string)
15
16    Variables:
17        hash: Commit hash
18        subject: Subject line
19        tags: List of maintainer tag strings
20        changes: Dict containing a list of changes (single line strings).
21            The dict is indexed by change version (an integer)
22        cc_list: List of people to aliases/emails to cc on this commit
23        notes: List of lines in the commit (not series) notes
24    """
25    def __init__(self, hash):
26        self.hash = hash
27        self.subject = None
28        self.tags = []
29        self.changes = {}
30        self.cc_list = []
31        self.signoff_set = set()
32        self.notes = []
33
34    def AddChange(self, version, info):
35        """Add a new change line to the change list for a version.
36
37        Args:
38            version: Patch set version (integer: 1, 2, 3)
39            info: Description of change in this version
40        """
41        if not self.changes.get(version):
42            self.changes[version] = []
43        self.changes[version].append(info)
44
45    def CheckTags(self):
46        """Create a list of subject tags in the commit
47
48        Subject tags look like this:
49
50            propounder: fort: Change the widget to propound correctly
51
52        Here the tags are propounder and fort. Multiple tags are supported.
53        The list is updated in self.tag.
54
55        Returns:
56            None if ok, else the name of a tag with no email alias
57        """
58        str = self.subject
59        m = True
60        while m:
61            m = re_subject_tag.match(str)
62            if m:
63                tag = m.group(1)
64                self.tags.append(tag)
65                str = m.group(2)
66        return None
67
68    def AddCc(self, cc_list):
69        """Add a list of people to Cc when we send this patch.
70
71        Args:
72            cc_list:    List of aliases or email addresses
73        """
74        self.cc_list += cc_list
75
76    def CheckDuplicateSignoff(self, signoff):
77        """Check a list of signoffs we have send for this patch
78
79        Args:
80            signoff:    Signoff line
81        Returns:
82            True if this signoff is new, False if we have already seen it.
83        """
84        if signoff in self.signoff_set:
85          return False
86        self.signoff_set.add(signoff)
87        return True
88