d726461e64
<!-- Please describe your changes on the following line: --> r? jdm --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #20344 (github issue number if applicable). <!-- Either: --> - [X] There are tests for these changes OR - [ ] These changes do not require tests because _____ <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> Source-Repo: https://github.com/servo/servo Source-Revision: 2f94e0d2a8c79f999e64231d2dbce5582ef1a689
95 lines
3.4 KiB
Rust
95 lines
3.4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::TextDecoderBinding;
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use dom::bindings::codegen::Bindings::TextDecoderBinding::{TextDecoderMethods, TextDecodeOptions};
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use dom::bindings::codegen::UnionTypes::ArrayBufferViewOrArrayBuffer;
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use dom::bindings::error::{Error, Fallible};
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use dom::bindings::reflector::{Reflector, reflect_dom_object};
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use dom::bindings::root::DomRoot;
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use dom::bindings::str::{DOMString, USVString};
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use dom::globalscope::GlobalScope;
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use dom_struct::dom_struct;
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use encoding_rs::Encoding;
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use std::borrow::ToOwned;
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#[dom_struct]
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pub struct TextDecoder {
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reflector_: Reflector,
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encoding: &'static Encoding,
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fatal: bool,
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}
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impl TextDecoder {
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fn new_inherited(encoding: &'static Encoding, fatal: bool) -> TextDecoder {
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TextDecoder {
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reflector_: Reflector::new(),
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encoding: encoding,
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fatal: fatal,
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}
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}
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fn make_range_error() -> Fallible<DomRoot<TextDecoder>> {
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Err(Error::Range("The given encoding is not supported.".to_owned()))
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}
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pub fn new(global: &GlobalScope, encoding: &'static Encoding, fatal: bool) -> DomRoot<TextDecoder> {
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reflect_dom_object(Box::new(TextDecoder::new_inherited(encoding, fatal)),
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global,
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TextDecoderBinding::Wrap)
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}
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/// <https://encoding.spec.whatwg.org/#dom-textdecoder>
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pub fn Constructor(global: &GlobalScope,
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label: DOMString,
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options: &TextDecoderBinding::TextDecoderOptions)
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-> Fallible<DomRoot<TextDecoder>> {
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let encoding = match Encoding::for_label_no_replacement(label.as_bytes()) {
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None => return TextDecoder::make_range_error(),
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Some(enc) => enc
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};
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Ok(TextDecoder::new(global, encoding, options.fatal))
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}
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}
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impl TextDecoderMethods for TextDecoder {
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// https://encoding.spec.whatwg.org/#dom-textdecoder-encoding
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fn Encoding(&self) -> DOMString {
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DOMString::from(self.encoding.name().to_ascii_lowercase())
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}
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// https://encoding.spec.whatwg.org/#dom-textdecoder-fatal
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fn Fatal(&self) -> bool {
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self.fatal
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}
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// https://encoding.spec.whatwg.org/#dom-textdecoder-decode
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fn Decode(
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&self,
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input: Option<ArrayBufferViewOrArrayBuffer>,
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_options: &TextDecodeOptions
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) -> Fallible<USVString> {
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match input {
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Some(arr) => {
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let vec: Vec<u8> = match arr {
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ArrayBufferViewOrArrayBuffer::ArrayBufferView(mut a) => a.to_vec(),
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ArrayBufferViewOrArrayBuffer::ArrayBuffer(mut a) => a.to_vec()
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};
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let s = if self.fatal {
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match self.encoding.decode_without_bom_handling_and_without_replacement(&vec) {
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Some(s) => s,
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None => return Err(Error::Type("Decoding failed".to_owned())),
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}
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} else {
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let (s, _has_errors) = self.encoding.decode_without_bom_handling(&vec);
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s
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};
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Ok(USVString(s.into_owned()))
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}
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None => Ok(USVString("".to_owned()))
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}
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}
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}
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