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兼容性修改

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宫欣海
2025-04-01 18:12:43 +08:00
parent dd46b361fc
commit 7294959799
7 changed files with 122 additions and 28 deletions
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85
src/tool/Binary.ts
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@@ -133,7 +133,7 @@ export class Binary {
const strLen = view.getUint32(offset, true);
offset += 4;
const strBytes = new Uint8Array(view.buffer, offset, strLen);
return new TextDecoder().decode(strBytes);
return this.utf8ArrayToString(strBytes);
}
case 3: // boolean
return view.getUint8(offset) === 1;
@@ -185,8 +185,7 @@ export class Binary {
break;
}
case 'string': {
const encoder = new TextEncoder();
const strBytes = encoder.encode(value);
const strBytes = this.stringToUtf8Array(value);
const strLen = strBytes.length;
const strBuf = new Uint8Array(5 + strLen);
strBuf[0] = 2;
@@ -268,4 +267,84 @@ export class Binary {
throw new Error(`未知的类型: ${type}`);
}
}
/** @internal */
private static utf8ArrayToString(array: Uint8Array): string {
if (!array || array.length === 0) {
return '';
}
let out = '';
let i = 0;
try {
while (i < array.length) {
let c = array[i++];
if (c > 127) {
if (c > 191 && c < 224) {
if (i >= array.length) break;
c = ((c & 31) << 6) | (array[i++] & 63);
} else if (c > 223 && c < 240) {
if (i + 1 >= array.length) break;
c = ((c & 15) << 12) | ((array[i++] & 63) << 6) | (array[i++] & 63);
} else if (c > 239 && c < 248) {
if (i + 2 >= array.length) break;
c = ((c & 7) << 18) | ((array[i++] & 63) << 12) | ((array[i++] & 63) << 6) | (array[i++] & 63);
} else {
// 无效的 UTF-8 序列
continue;
}
}
if (c <= 0xffff) {
out += String.fromCharCode(c);
} else if (c <= 0x10ffff) {
c -= 0x10000;
out += String.fromCharCode((c >> 10) | 0xd800);
out += String.fromCharCode((c & 0x3FF) | 0xdc00);
}
}
} catch (error) {
console.error('UTF-8 解码错误:', error);
return '';
}
return out;
}
/** @internal */
private static stringToUtf8Array(str: string): Uint8Array {
if (!str || str.length === 0) {
return new Uint8Array(0);
}
const arr: number[] = [];
try {
for (let i = 0; i < str.length; i++) {
let charcode = str.charCodeAt(i);
if (charcode < 0x80) {
arr.push(charcode);
} else if (charcode < 0x800) {
arr.push(0xc0 | (charcode >> 6));
arr.push(0x80 | (charcode & 0x3f));
} else if (charcode < 0xd800 || charcode >= 0xe000) {
arr.push(0xe0 | (charcode >> 12));
arr.push(0x80 | ((charcode >> 6) & 0x3f));
arr.push(0x80 | (charcode & 0x3f));
} else {
// surrogate pair
if (i + 1 >= str.length) {
// 不完整的代理对
break;
}
i++;
charcode = ((charcode & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff);
charcode += 0x10000;
arr.push(0xf0 | (charcode >> 18));
arr.push(0x80 | ((charcode >> 12) & 0x3f));
arr.push(0x80 | ((charcode >> 6) & 0x3f));
arr.push(0x80 | (charcode & 0x3f));
}
}
} catch (error) {
console.error('UTF-8 编码错误:', error);
return new Uint8Array(0);
}
return new Uint8Array(arr);
}
}