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

extern crate cuach_derive;
extern crate uuid;
extern crate v_htmlescape;
use v_htmlescape::HTMLEscape;
pub use cuach_derive::template;

pub trait Render {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error>;
    fn render(&self) -> Result<String, std::fmt::Error> {
        let mut v = String::new();
        self.render_into(&mut v)?;
        Ok(v)
    }
}

impl Render for () {
    fn render_into(&self, _: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        Ok(())
    }
}

impl<'a, R: Render> Render for &'a R {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        (*self).render_into(w)
    }
}

impl Render for usize {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", self)
    }
}

impl Render for isize {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", self)
    }
}

impl Render for i32 {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", self)
    }
}

impl Render for u32 {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", self)
    }
}

impl<'a> Render for &'a str {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", HTMLEscape::new(self.as_bytes()))
    }
}

impl Render for String {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", HTMLEscape::new(self.as_bytes()))
    }
}

pub struct PreEscaped<S: AsRef<str>>(pub S);

impl<S: AsRef<str>> Render for PreEscaped<S> {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", self.0.as_ref())
    }
}

impl Render for uuid::Uuid {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        write!(w, "{}", self)
    }
}

use std::borrow::Borrow;
impl<'a> Render for std::borrow::Cow<'a, str> {
    fn render_into(&self, w: &mut std::fmt::Write) -> Result<(), std::fmt::Error> {
        let r: &str = self.borrow();
        r.render_into(w)
    }
}