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
132
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use computed_values::font_family::FontFamily;
use cssparser::{AtRuleParser, DeclarationListParser, DeclarationParser, Parser};
use parser::{ParserContext, log_css_error};
use properties::longhands::font_family::parse_one_family;
use std::ascii::AsciiExt;
use string_cache::Atom;
use url::{Url, UrlParser};
use util::mem::HeapSizeOf;
#[derive(Clone, Debug, HeapSizeOf, PartialEq, Eq, Deserialize, Serialize)]
pub enum Source {
Url(UrlSource),
Local(Atom),
}
#[derive(Clone, Debug, HeapSizeOf, PartialEq, Eq, Deserialize, Serialize)]
pub struct UrlSource {
pub url: Url,
pub format_hints: Vec<String>,
}
#[derive(Debug, HeapSizeOf, PartialEq, Eq)]
pub struct FontFaceRule {
pub family: Atom,
pub sources: Vec<Source>,
}
pub fn parse_font_face_block(context: &ParserContext, input: &mut Parser)
-> Result<FontFaceRule, ()> {
let mut family = None;
let mut src = None;
let mut iter = DeclarationListParser::new(input, FontFaceRuleParser { context: context });
while let Some(declaration) = iter.next() {
match declaration {
Err(range) => {
let pos = range.start;
let message = format!("Unsupported @font-face descriptor declaration: '{}'",
iter.input.slice(range));
log_css_error(iter.input, pos, &*message, context);
}
Ok(FontFaceDescriptorDeclaration::Family(value)) => {
family = Some(value);
}
Ok(FontFaceDescriptorDeclaration::Src(value)) => {
src = Some(value);
}
}
}
match (family, src) {
(Some(family), Some(src)) => {
Ok(FontFaceRule {
family: family,
sources: src,
})
}
_ => Err(())
}
}
enum FontFaceDescriptorDeclaration {
Family(Atom),
Src(Vec<Source>),
}
struct FontFaceRuleParser<'a, 'b: 'a> {
context: &'a ParserContext<'b>,
}
/// Default methods reject all at rules.
impl<'a, 'b> AtRuleParser for FontFaceRuleParser<'a, 'b> {
type Prelude = ();
type AtRule = FontFaceDescriptorDeclaration;
}
impl<'a, 'b> DeclarationParser for FontFaceRuleParser<'a, 'b> {
type Declaration = FontFaceDescriptorDeclaration;
fn parse_value(&self, name: &str, input: &mut Parser) -> Result<FontFaceDescriptorDeclaration, ()> {
match_ignore_ascii_case! { name,
"font-family" => {
Ok(FontFaceDescriptorDeclaration::Family(try!(
parse_one_non_generic_family_name(input))))
},
"src" => {
Ok(FontFaceDescriptorDeclaration::Src(try!(input.parse_comma_separated(|input| {
parse_one_src(self.context, input)
}))))
}
_ => Err(())
}
}
}
fn parse_one_non_generic_family_name(input: &mut Parser) -> Result<Atom, ()> {
match parse_one_family(input) {
Ok(FontFamily::FamilyName(name)) => Ok(name.clone()),
_ => Err(())
}
}
fn parse_one_src(context: &ParserContext, input: &mut Parser) -> Result<Source, ()> {
if input.try(|input| input.expect_function_matching("local")).is_ok() {
return Ok(Source::Local(try!(input.parse_nested_block(parse_one_non_generic_family_name))))
}
let url = try!(input.expect_url());
let url = UrlParser::new().base_url(context.base_url).parse(&url).unwrap_or_else(
|_error| url!("about:invalid"));
// Parsing optional format()
let format_hints = if input.try(|input| input.expect_function_matching("format")).is_ok() {
try!(input.parse_nested_block(|input| {
input.parse_comma_separated(|input| {
Ok((try!(input.expect_string())).into_owned())
})
}))
} else {
vec![]
};
Ok(Source::Url(UrlSource {
url: url,
format_hints: format_hints,
}))
}
|
