1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135

use std::time::SystemTime;

use crate::bstr::{BString, ByteSlice};

/// Identity handling.
///
/// # Deviation
///
/// There is no notion of a default user like in git, and instead failing to provide a user
/// is fatal. That way, we enforce correctness and force application developers to take care
/// of this issue which can be done in various ways, for instance by setting
/// `gitoxide.committer.nameFallback` and similar.
impl crate::Repository {
    /// Return the committer as configured by this repository, which is determined by…
    ///
    /// * …the git configuration `committer.name|email`…
    /// * …the `GIT_COMMITTER_(NAME|EMAIL|DATE)` environment variables…
    /// * …the configuration for `user.name|email` as fallback…
    ///
    /// …and in that order, or `None` if there was nothing configured.
    ///
    /// # Note
    ///
    /// The values are cached when the repository is instantiated.
    pub fn committer(&self) -> Option<git_actor::SignatureRef<'_>> {
        let p = self.config.personas();

        git_actor::SignatureRef {
            name: p.committer.name.as_ref().or(p.user.name.as_ref()).map(|v| v.as_ref())?,
            email: p
                .committer
                .email
                .as_ref()
                .or(p.user.email.as_ref())
                .map(|v| v.as_ref())?,
            time: p.committer.time.unwrap_or_else(git_date::Time::now_local_or_utc),
        }
        .into()
    }

    /// Return the author as configured by this repository, which is determined by…
    ///
    /// * …the git configuration `author.name|email`…
    /// * …the `GIT_AUTHOR_(NAME|EMAIL|DATE)` environment variables…
    /// * …the configuration for `user.name|email` as fallback…
    ///
    /// …and in that order, or `None` if there was nothing configured.
    ///
    /// # Note
    ///
    /// The values are cached when the repository is instantiated.
    pub fn author(&self) -> Option<git_actor::SignatureRef<'_>> {
        let p = self.config.personas();

        git_actor::SignatureRef {
            name: p.author.name.as_ref().or(p.user.name.as_ref()).map(|v| v.as_ref())?,
            email: p.author.email.as_ref().or(p.user.email.as_ref()).map(|v| v.as_ref())?,
            time: p.author.time.unwrap_or_else(git_date::Time::now_local_or_utc),
        }
        .into()
    }
}

#[derive(Debug, Clone)]
pub(crate) struct Entity {
    pub name: Option<BString>,
    pub email: Option<BString>,
    /// A time parsed from an environment variable.
    pub time: Option<git_actor::Time>,
}

#[derive(Debug, Clone)]
pub(crate) struct Personas {
    user: Entity,
    committer: Entity,
    author: Entity,
}

impl Personas {
    pub fn from_config_and_env(config: &git_config::File<'_>) -> Self {
        fn entity_in_section(
            section_name: &str,
            config: &git_config::File<'_>,
            fallback: bool,
        ) -> (Option<BString>, Option<BString>) {
            let fallback = fallback
                .then(|| config.section("gitoxide", Some(section_name.into())).ok())
                .flatten();
            (
                config
                    .string(section_name, None, "name")
                    .or_else(|| fallback.as_ref().and_then(|s| s.value("nameFallback")))
                    .map(|v| v.into_owned()),
                config
                    .string(section_name, None, "email")
                    .or_else(|| fallback.as_ref().and_then(|s| s.value("emailFallback")))
                    .map(|v| v.into_owned()),
            )
        }
        let now = SystemTime::now();
        let parse_date = |key: &str| -> Option<git_date::Time> {
            config.string_by_key(key).and_then(|date| {
                date.to_str()
                    .ok()
                    .and_then(|date| git_date::parse(date, Some(now)).ok())
            })
        };

        let (committer_name, committer_email) = entity_in_section("committer", config, true);
        let (author_name, author_email) = entity_in_section("author", config, true);
        let (user_name, mut user_email) = entity_in_section("user", config, false);

        let committer_date = parse_date("gitoxide.commit.committerDate");
        let author_date = parse_date("gitoxide.commit.authorDate");

        user_email = user_email.or_else(|| config.string_by_key("gitoxide.user.email").map(|v| v.into_owned()));
        Personas {
            user: Entity {
                name: user_name,
                email: user_email,
                time: None,
            },
            committer: Entity {
                name: committer_name,
                email: committer_email,
                time: committer_date,
            },
            author: Entity {
                name: author_name,
                email: author_email,
                time: author_date,
            },
        }
    }
}