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64 lines
2.2 KiB
Rust
64 lines
2.2 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 core::nonzero::NonZero;
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use dom::bindings::codegen::Bindings::TextEncoderBinding;
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use dom::bindings::codegen::Bindings::TextEncoderBinding::TextEncoderMethods;
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use dom::bindings::error::Fallible;
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use dom::bindings::js::Root;
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use dom::bindings::reflector::{Reflector, reflect_dom_object};
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use dom::bindings::str::{DOMString, USVString};
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use dom::globalscope::GlobalScope;
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use encoding::EncoderTrap;
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use encoding::Encoding;
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use encoding::all::UTF_8;
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use js::jsapi::{JSContext, JSObject};
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use js::jsapi::{JS_GetUint8ArrayData, JS_NewUint8Array};
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use libc::uint8_t;
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use std::ptr;
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#[dom_struct]
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pub struct TextEncoder {
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reflector_: Reflector,
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}
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impl TextEncoder {
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fn new_inherited() -> TextEncoder {
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TextEncoder {
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reflector_: Reflector::new(),
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}
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}
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pub fn new(global: &GlobalScope) -> Root<TextEncoder> {
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reflect_dom_object(box TextEncoder::new_inherited(),
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global,
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TextEncoderBinding::Wrap)
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}
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// https://encoding.spec.whatwg.org/#dom-textencoder
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pub fn Constructor(global: &GlobalScope) -> Fallible<Root<TextEncoder>> {
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Ok(TextEncoder::new(global))
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}
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}
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impl TextEncoderMethods for TextEncoder {
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// https://encoding.spec.whatwg.org/#dom-textencoder-encoding
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fn Encoding(&self) -> DOMString {
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DOMString::from(UTF_8.name())
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}
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#[allow(unsafe_code)]
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// https://encoding.spec.whatwg.org/#dom-textencoder-encode
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unsafe fn Encode(&self, cx: *mut JSContext, input: USVString) -> NonZero<*mut JSObject> {
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let encoded = UTF_8.encode(&input.0, EncoderTrap::Strict).unwrap();
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let length = encoded.len() as u32;
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rooted!(in(cx) let js_object = JS_NewUint8Array(cx, length));
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assert!(!js_object.is_null());
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let mut is_shared = false;
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let js_object_data: *mut uint8_t = JS_GetUint8ArrayData(js_object.get(), &mut is_shared, ptr::null());
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assert!(!is_shared);
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ptr::copy_nonoverlapping(encoded.as_ptr(), js_object_data, length as usize);
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NonZero::new(js_object.get())
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}
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}
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