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
|
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
// @ts-check
/// <reference path="../../core/lib.deno_core.d.ts" />
/// <reference path="./internal.d.ts" />
/// <reference path="./lib.deno_web.d.ts" />
const core = globalThis.Deno.core;
const ops = core.ops;
const primordials = globalThis.__bootstrap.primordials;
const {
TypedArrayPrototypeGetByteLength,
} = primordials;
import * as webidl from "ext:deno_webidl/00_webidl.js";
import { TransformStream } from "ext:deno_web/06_streams.js";
webidl.converters.CompressionFormat = webidl.createEnumConverter(
"CompressionFormat",
[
"deflate",
"deflate-raw",
"gzip",
],
);
class CompressionStream {
#transform;
constructor(format) {
const prefix = "Failed to construct 'CompressionStream'";
webidl.requiredArguments(arguments.length, 1, prefix);
format = webidl.converters.CompressionFormat(format, prefix, "Argument 1");
const rid = ops.op_compression_new(format, false);
this.#transform = new TransformStream({
transform(chunk, controller) {
chunk = webidl.converters.BufferSource(chunk, prefix, "chunk");
const output = ops.op_compression_write(
rid,
chunk,
);
maybeEnqueue(controller, output);
},
flush(controller) {
const output = ops.op_compression_finish(rid);
maybeEnqueue(controller, output);
},
});
this[webidl.brand] = webidl.brand;
}
get readable() {
webidl.assertBranded(this, CompressionStreamPrototype);
return this.#transform.readable;
}
get writable() {
webidl.assertBranded(this, CompressionStreamPrototype);
return this.#transform.writable;
}
}
webidl.configurePrototype(CompressionStream);
const CompressionStreamPrototype = CompressionStream.prototype;
class DecompressionStream {
#transform;
constructor(format) {
const prefix = "Failed to construct 'DecompressionStream'";
webidl.requiredArguments(arguments.length, 1, prefix);
format = webidl.converters.CompressionFormat(format, prefix, "Argument 1");
const rid = ops.op_compression_new(format, true);
this.#transform = new TransformStream({
transform(chunk, controller) {
chunk = webidl.converters.BufferSource(chunk, prefix, "chunk");
const output = ops.op_compression_write(
rid,
chunk,
);
maybeEnqueue(controller, output);
},
flush(controller) {
const output = ops.op_compression_finish(rid);
maybeEnqueue(controller, output);
},
});
this[webidl.brand] = webidl.brand;
}
get readable() {
webidl.assertBranded(this, DecompressionStreamPrototype);
return this.#transform.readable;
}
get writable() {
webidl.assertBranded(this, DecompressionStreamPrototype);
return this.#transform.writable;
}
}
function maybeEnqueue(controller, output) {
if (output && TypedArrayPrototypeGetByteLength(output) > 0) {
controller.enqueue(output);
}
}
webidl.configurePrototype(DecompressionStream);
const DecompressionStreamPrototype = DecompressionStream.prototype;
export { CompressionStream, DecompressionStream };
|
