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

use crate::dtd::DTD;

// https://developer.mozilla.org/en-US/docs/Web/API/DocumentType
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct DocumentType<'a> {
    dtd: DTD<'a>,
    pub name: &'a str,
    pub public_id: &'static str,
    pub system_id: &'static str,
}

impl<'a> DocumentType<'a> {
    pub fn new(r#type: &'static str, name: &'a str) -> Self {
        let dtd = DTD::new(r#type, name);
        let public_id = dtd.public_id();
        let system_id = dtd.system_id();

        Self {
            dtd,
            name,
            public_id,
            system_id,
        }
    }

    pub fn as_tag(&self) -> String {
        let mut out = "<!DOCTYPE".to_string();
        let dec = match self.dtd.spec {
            "html" => match self.dtd.name {
                "5" | "html" => " HTML>".to_string(),
                _ => format!(
                    " HTML PUBLIC \"{}\" \"{}\">",
                    self.public_id, self.system_id
                ),
            },
            "xhtml" => format!(
                " html PUBLIC \"{}\" \"{}\">",
                self.public_id, self.system_id
            ),
            _ => "".to_string(),
        };
        out.push_str(&dec);
        out
    }
}

#[cfg(test)]
mod test {
    use super::*;

    #[test]
    fn test_document_type_new() {
        let doctype = DocumentType::new("unknown", "invalid");
        assert_eq!(doctype.name, "invalid");
        assert_eq!(doctype.public_id, "");
        assert_eq!(doctype.system_id, "");

        let doctype = DocumentType::new("unknown", "strict");
        assert_eq!(doctype.name, "strict");
        assert_eq!(doctype.public_id, "");
        assert_eq!(doctype.system_id, "");

        let doctype = DocumentType::new("xhtml", "invalid");
        assert_eq!(doctype.name, "invalid");
        assert_eq!(doctype.public_id, "");
        assert_eq!(doctype.system_id, "");

        let doctype = DocumentType::new("xhtml", "frameset");
        assert_eq!(doctype.name, "frameset");
        assert_eq!(doctype.public_id, "-//W3C//DTD XHTML 1.0 Frameset//EN");
        assert_eq!(
            doctype.system_id,
            "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"
        );

        let doctype = DocumentType::new("html", "invalid");
        assert_eq!(doctype.name, "invalid");
        assert_eq!(doctype.public_id, "");
        assert_eq!(doctype.system_id, "");

        let doctype = DocumentType::new("html", "transitional");
        assert_eq!(doctype.name, "transitional");
        assert_eq!(doctype.public_id, "-//W3C//DTD HTML 4.01 Transitional//EN");
        assert_eq!(doctype.system_id, "http://www.w3.org/TR/html4/loose.dtd");
    }

    #[test]
    fn test_as_tag() {
        let doctype = DocumentType::new("html", "5");
        assert_eq!(doctype.as_tag(), "<!DOCTYPE HTML>");

        let doctype = DocumentType::new("html", "strict");
        assert_eq!(
            doctype.as_tag(),
            inline!(
                r#"<!DOCTYPE
 HTML
 PUBLIC
 "-//W3C//DTD HTML 4.01//EN"
 "http://www.w3.org/TR/html4/strict.dtd"
>"#
            )
        );

        let doctype = DocumentType::new("html", "frameset");
        assert_eq!(
            doctype.as_tag(),
            inline!(
                r#"<!DOCTYPE
 HTML
 PUBLIC
 "-//W3C//DTD HTML 4.01 Frameset//EN"
 "http://www.w3.org/TR/html4/frameset.dtd"
>"#
            )
        );

        let doctype = DocumentType::new("html", "transitional");
        assert_eq!(
            doctype.as_tag(),
            inline!(
                r#"<!DOCTYPE
 HTML
 PUBLIC
 "-//W3C//DTD HTML 4.01 Transitional//EN"
 "http://www.w3.org/TR/html4/loose.dtd"
>"#
            )
        );
    }
}