小龙
a1951c3aeb
功能: - 网站收藏管理（添加/编辑/删除/收藏） - 分类管理（支持自定义图标和颜色） - 搜索功能 - 点击统计 - 现代暗色主题 UI 技术栈: - 后端: Python Flask + MySQL - 前端: React + Vite + Tailwind CSS - 数据库: MySQL (192.168.8.160) - 端口: 后端 5003, 前端 5173
56 lines
1.4 KiB
TypeScript
56 lines
1.4 KiB
TypeScript
import type { StringReader, StringWriter } from './strings';
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export const comma = ','.charCodeAt(0);
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export const semicolon = ';'.charCodeAt(0);
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const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
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const intToChar = new Uint8Array(64); // 64 possible chars.
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const charToInt = new Uint8Array(128); // z is 122 in ASCII
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for (let i = 0; i < chars.length; i++) {
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const c = chars.charCodeAt(i);
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intToChar[i] = c;
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charToInt[c] = i;
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}
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export function decodeInteger(reader: StringReader, relative: number): number {
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let value = 0;
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let shift = 0;
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let integer = 0;
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do {
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const c = reader.next();
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integer = charToInt[c];
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value |= (integer & 31) << shift;
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shift += 5;
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} while (integer & 32);
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const shouldNegate = value & 1;
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value >>>= 1;
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if (shouldNegate) {
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value = -0x80000000 | -value;
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}
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return relative + value;
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}
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export function encodeInteger(builder: StringWriter, num: number, relative: number): number {
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let delta = num - relative;
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delta = delta < 0 ? (-delta << 1) | 1 : delta << 1;
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do {
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let clamped = delta & 0b011111;
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delta >>>= 5;
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if (delta > 0) clamped |= 0b100000;
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builder.write(intToChar[clamped]);
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} while (delta > 0);
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return num;
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}
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export function hasMoreVlq(reader: StringReader, max: number) {
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if (reader.pos >= max) return false;
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return reader.peek() !== comma;
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}
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