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
|
// original code:
// var re_btou = new RegExp(
// [
// "[\xC0-\xDF][\x80-\xBF]",
// "[\xE0-\xEF][\x80-\xBF]{2}",
// "[\xF0-\xF7][\x80-\xBF]{3}",
// ].join("|"),
// "g"
// );
export var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
export var re_btou = new RegExp(
[
"[\xC0-\xDF][\x80-\xBF]",
"[\xE0-\xEF][\x80-\xBF]{2}",
"[\xF0-\xF7][\x80-\xBF]{3}",
].join("|"),
"g",
);
const encoder = new TextEncoder();
const realLines = [
"[\xC0-\xDF][\x80-\xBF]",
"[\xE0-\xEF][\x80-\xBF]{2}",
"[\xF0-\xF7][\x80-\xBF]{3}",
];
const real = realLines.map((input) => Array.from(encoder.encode(input)));
const expected = [
[91, 195, 128, 45, 195, 159, 93, 91, 194, 128, 45, 194, 191, 93],
[
91, 195, 160, 45, 195, 175, 93, 91, 194, 128, 45, 194, 191, 93, 123, 50,
125,
],
[
91, 195, 176, 45, 195, 183, 93, 91, 194, 128, 45, 194, 191, 93, 123, 51,
125,
],
];
const newlinePreserved = `\n`;
export function test() {
if (
!real.every((point, i) => point.every((val, j) => val === expected[i][j]))
) {
throw new Error(
`test failed
${JSON.stringify({ expected, real }, null, 2)}`,
);
}
if (newlinePreserved.length !== 1 || newlinePreserved.charCodeAt(0) !== 10) {
throw new Error("Newline was not preserved");
}
const decoder = new TextDecoder("utf8");
if (
!realLines.every(
(line, i) => decoder.decode(Uint8Array.from(expected[i])) === line,
)
) {
throw new Error(
`test failed. Lines did not match.
${JSON.stringify({ expected, real }, null, 2)}`,
);
}
testDone(import.meta.url);
}
|
