ahecha_html/render/render_string/
attributes.rs

1use std::fmt::{Result, Write};
2
3use crate::{
4  escape_html,
5  html::{AttributeValue, Attributes},
6  RenderString,
7};
8
9impl RenderString for Attributes {
10  fn render_into<W: Write>(self, writer: &mut W) -> Result {
11    self.attrs.iter().try_for_each(|(key, value)| {
12      write!(writer, " {}", key)?;
13      match value {
14        AttributeValue::Bool(value) => {
15          if !value {
16            return write!(writer, "={}", value);
17          }
18        }
19        AttributeValue::None => {}
20        AttributeValue::String(value) => {
21          if !value.is_empty() {
22            write!(writer, "=\"")?;
23            escape_html(value, writer)?;
24            write!(writer, "\"")?;
25          }
26        }
27      }
28
29      Ok(())
30    })?;
31
32    Ok(())
33  }
34}
35
36// pub trait RenderAttributeValue {
37//   fn to_attribute_value(&self) -> String;
38// }
39
40// impl RenderAttributeValue for Option<String> {
41//   fn to_attribute_value(&self) -> String {
42//     match self {
43//       Some(s) => s.to_owned(),
44//       None => "".to_string(),
45//     }
46//   }
47// }
48
49// impl RenderAttributeValue for Option<&str> {
50//   fn to_attribute_value(&self) -> String {
51//     match self {
52//       Some(s) => s.to_string(),
53//       None => "".to_string(),
54//     }
55//   }
56// }
57
58// macro_rules! impl_attribute_value {
59//   ($($t:ty),*) => {
60//     $(impl RenderAttributeValue for $t {
61//       fn to_attribute_value(&self) -> String {
62//         self.to_string()
63//       }
64//     })*
65
66//     $(impl From<$t> for AttributeValue {
67//       fn from(item: $t) -> AttributeValue {
68//         AttributeValue::String(item.to_string())
69//       }
70//     })*
71
72//     $(impl From<Option<$t>> for AttributeValue {
73//       fn from(item: Option<$t>) -> AttributeValue {
74//         match item {
75//           Some(item) => item.into(),
76//           None => AttributeValue::None,
77//         }
78//       }
79//     })*
80//   };
81// }
82
83// macro_rules! impl_attribute_value_with_into {
84//   ($($t:ty),*) => {
85//     $(impl_attribute_value!($t);)*
86
87//     $(impl From<AttributeValue> for $t {
88//       fn from(item: AttributeValue) -> $t {
89//         match item {
90//           AttributeValue::String(s) => s.parse().unwrap(),
91//           _ => todo!("AttributeValue"),
92//         }
93//       }
94//     })*
95//   };
96// }
97
98// impl RenderAttributeValue for AttributeValue {
99//   fn to_attribute_value(&self) -> String {
100//     match self {
101//       Self::Bool(value) => value.to_string(),
102//       Self::None => String::new(),
103//       Self::String(value) => value.to_owned(),
104//     }
105//   }
106// }
107
108// impl_attribute_value!(&&str, &str, &String, String, bool);
109// impl_attribute_value_with_into!(u8, u16, u32, u64, i8, i16, i32, i64, f32, f64);
110
111// impl RenderAttributes for Vec<(String, AttributeValue)> {
112//   fn render_attributes_into<W: Write>(self, writer: &mut W) -> Result {
113//     // self.sort_by(|a, b| a.0.partial_cmp(&b.0));
114//     for (k, v) in self.iter() {
115//       match v {
116//         AttributeValue::None => (),
117//         _ => {
118//           write!(writer, " {}=\"", k)?;
119//           escape_html(&v.to_attribute_value(), writer)?;
120//           write!(writer, "\"")?;
121//         }
122//       }
123//     }
124
125//     Ok(())
126//   }
127// }
128
129// pub trait RenderAttributes: Sized {
130//   fn render_attributes_into<W: Write>(self, writer: &mut W) -> Result;
131// }
132
133// impl RenderAttributes for () {
134//   fn render_attributes_into<W: Write>(self, _writer: &mut W) -> Result {
135//     Ok(())
136//   }
137// }
138
139// impl<A> RenderAttributes for (&str, A)
140// where
141//   A: RenderAttributeValue,
142// {
143//   fn render_attributes_into<W: Write>(self, writer: &mut W) -> Result {
144//     write!(writer, " {}=\"", self.0)?;
145//     escape_html(&self.1.to_attribute_value(), writer)?;
146//     write!(writer, "\"")
147//   }
148// }
ahecha_html/render/render_string/attributes.rs

ahecha_html/render/render_string/
attributes.rs
