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
|
/* 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/. */
//! Parsing stylesheets from bytes (not `&str`).
extern crate encoding;
use context::QuirksMode;
use cssparser::{stylesheet_encoding, EncodingSupport};
use error_reporting::ParseErrorReporter;
use media_queries::MediaList;
use self::encoding::{EncodingRef, DecoderTrap};
use servo_arc::Arc;
use shared_lock::SharedRwLock;
use std::str;
use stylesheets::{Stylesheet, StylesheetLoader, Origin, UrlExtraData};
struct RustEncoding;
impl EncodingSupport for RustEncoding {
type Encoding = EncodingRef;
fn utf8() -> Self::Encoding {
encoding::all::UTF_8
}
fn is_utf16_be_or_le(encoding: &Self::Encoding) -> bool {
matches!(encoding.name(), "utf-16be" | "utf-16le")
}
fn from_label(ascii_label: &[u8]) -> Option<Self::Encoding> {
str::from_utf8(ascii_label).ok().and_then(encoding::label::encoding_from_whatwg_label)
}
}
fn decode_stylesheet_bytes(css: &[u8], protocol_encoding_label: Option<&str>,
environment_encoding: Option<EncodingRef>)
-> (String, EncodingRef) {
let fallback_encoding = stylesheet_encoding::<RustEncoding>(
css, protocol_encoding_label.map(str::as_bytes), environment_encoding);
let (result, used_encoding) = encoding::decode(css, DecoderTrap::Replace, fallback_encoding);
(result.unwrap(), used_encoding)
}
impl Stylesheet {
/// Parse a stylesheet from a set of bytes, potentially received over the
/// network.
///
/// Takes care of decoding the network bytes and forwards the resulting
/// string to `Stylesheet::from_str`.
pub fn from_bytes<R>(bytes: &[u8],
url_data: UrlExtraData,
protocol_encoding_label: Option<&str>,
environment_encoding: Option<EncodingRef>,
origin: Origin,
media: MediaList,
shared_lock: SharedRwLock,
stylesheet_loader: Option<&StylesheetLoader>,
error_reporter: &R,
quirks_mode: QuirksMode)
-> Stylesheet
where R: ParseErrorReporter
{
let (string, _) = decode_stylesheet_bytes(
bytes, protocol_encoding_label, environment_encoding);
Stylesheet::from_str(&string,
url_data,
origin,
Arc::new(shared_lock.wrap(media)),
shared_lock,
stylesheet_loader,
error_reporter,
quirks_mode,
0)
}
/// Updates an empty stylesheet with a set of bytes that reached over the
/// network.
pub fn update_from_bytes<R>(existing: &Stylesheet,
bytes: &[u8],
protocol_encoding_label: Option<&str>,
environment_encoding: Option<EncodingRef>,
url_data: UrlExtraData,
stylesheet_loader: Option<&StylesheetLoader>,
error_reporter: &R)
where R: ParseErrorReporter
{
let (string, _) = decode_stylesheet_bytes(
bytes, protocol_encoding_label, environment_encoding);
Self::update_from_str(existing,
&string,
url_data,
stylesheet_loader,
error_reporter,
0)
}
}
|
