mail_headers_ng/header_components/utils/
mod.rs

1
2
3pub mod text_partition;
4
5
6#[cfg(feature="serde")]
7pub mod serde {
8    use serde::{
9        Serialize, Deserialize,
10        ser::{Serializer},
11        de::{Deserializer}
12    };
13
14    use chrono::{DateTime, Utc};
15
16    pub mod date_time {
17        use super::*;
18        use serde::de::Error;
19
20        pub fn serialize<S>(dt: &DateTime<Utc>, serializer: S)
21            -> Result<S::Ok, S::Error>
22            where S: Serializer
23        {
24            serializer.serialize_str(&dt.to_rfc2822())
25        }
26
27        pub fn deserialize<'de, D>(deserializer: D)
28            -> Result<DateTime<Utc>, D::Error>
29            where D: Deserializer<'de>
30        {
31            let as_string = String::deserialize(deserializer)?;
32            let date_time = DateTime::parse_from_rfc2822(&as_string)
33                .map_err(|e| D::Error::custom(format!(
34                    "invalid rfc2822 date time: {}", e
35                )))?;
36
37            Ok(date_time.with_timezone(&Utc))
38        }
39    }
40
41    pub mod opt_date_time {
42        use super::*;
43
44        pub fn serialize<S>(
45            dt: &Option<DateTime<Utc>>,
46            serializer: S
47        ) -> Result<S::Ok, S::Error>
48            where S: Serializer
49        {
50            SerOptDateTime::from(dt).serialize(serializer)
51        }
52
53        pub fn deserialize<'de, D>(deserializer: D)
54            -> Result<Option<DateTime<Utc>>, D::Error>
55            where D: Deserializer<'de>
56        {
57            DeOptDateTime::deserialize(deserializer).map(Into::into)
58        }
59
60        #[derive(Deserialize)]
61        enum DeOptDateTime {
62            Some(#[serde(with="super::date_time")] DateTime<Utc>),
63            None
64        }
65
66        impl Into<Option<DateTime<Utc>>> for DeOptDateTime {
67            fn into(self) -> Option<DateTime<Utc>> {
68                match self {
69                    DeOptDateTime::Some(dt) => Some(dt),
70                    DeOptDateTime::None => None
71                }
72            }
73        }
74
75        #[derive(Serialize)]
76        enum SerOptDateTime<'a> {
77            Some(#[serde(with="super::date_time")] &'a DateTime<Utc>),
78            None
79        }
80
81        impl<'a> From<&'a Option<DateTime<Utc>>> for SerOptDateTime<'a> {
82            fn from(val: &'a Option<DateTime<Utc>>) -> Self {
83                match val {
84                    Some(ref dt) => SerOptDateTime::Some(dt),
85                    None => SerOptDateTime::None
86                }
87            }
88        }
89    }
90}
mail_headers_ng/header_components/utils/mod.rs

mail_headers_ng/header_components/utils/
mod.rs
