rendererlib/enums/
format.rs

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
use std::fmt;
use std::fmt::Formatter;
use std::str;

use serde::Deserialize;
use serde::Serialize;

#[cfg(feature = "diesel")]
use {
    diesel::{deserialize, not_none, serialize},
    diesel::{AsExpression, FromSqlRow},
    diesel::backend::Backend,
    diesel::deserialize::FromSql,
    diesel::pg::Pg,
    diesel::serialize::{IsNull, Output, ToSql},
    diesel::types::Varchar,
    std::io::Write,
};

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
#[cfg_attr(
feature = "diesel",
derive(AsExpression, FromSqlRow),
sql_type = "Varchar"
)]

pub enum Format {
    Pdf,
    Png,
    Html,
    Undefined,
}
impl fmt::Display for Format {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}
impl Default for Format {
    fn default() -> Self {
        Format::Undefined
    }
}

#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for Format {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            Format::Pdf => out.write_all(b"Pdf")?,
            Format::Png => out.write_all(b"Png")?,
            Format::Html => out.write_all(b"Html")?,
            Format::Undefined => out.write_all(b"Undefined")?,

        }
        Ok(IsNull::No)
    }
}


#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for Format {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Pdf" => Ok(Format::Pdf),
            b"Png" => Ok(Format::Png),
            b"Html" => Ok(Format::Html),
            b"Undefined" => Ok(Format::Undefined),
            _ => Err("Unrecognized enum variant".into()),
        }
    }
}