forked from FINAKON/HelpProject
Bhargava
6063bd1724
1. Initial Commit - a boiler plate code and POC to realize the concept of context
sensitive help
2. Frontend code written in ReactJS
3. Backend code written in Java, Spring Boot Framework
4. Frontend Start:
pre-requisites : node, npm
npm run dev ==> to start the frontend vite server
5. Backend Start:
pre-requisites : java, mvn
mvn spring-boot:run ==> to start the backend server
6. Visit http://localhost:5173/ for basic demo of help, press F1 in textboxes
7. Visit http://localhost:5173/editor and enter "admin123" to add/modify texts.
Happy Coding !!!
Thank you,
Bhargava.
107 lines
3.1 KiB
JavaScript
107 lines
3.1 KiB
JavaScript
import { asciiAlphanumeric } from 'micromark-util-character';
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import { encode } from 'micromark-util-encode';
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/**
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* Make a value safe for injection as a URL.
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*
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* This encodes unsafe characters with percent-encoding and skips already
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* encoded sequences (see `normalizeUri`).
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* Further unsafe characters are encoded as character references (see
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* `micromark-util-encode`).
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*
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* A regex of allowed protocols can be given, in which case the URL is
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* sanitized.
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* For example, `/^(https?|ircs?|mailto|xmpp)$/i` can be used for `a[href]`, or
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* `/^https?$/i` for `img[src]` (this is what `github.com` allows).
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* If the URL includes an unknown protocol (one not matched by `protocol`, such
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* as a dangerous example, `javascript:`), the value is ignored.
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*
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* @param {string | null | undefined} url
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* URI to sanitize.
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* @param {RegExp | null | undefined} [protocol]
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* Allowed protocols.
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* @returns {string}
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* Sanitized URI.
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*/
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export function sanitizeUri(url, protocol) {
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const value = encode(normalizeUri(url || ''));
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if (!protocol) {
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return value;
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}
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const colon = value.indexOf(':');
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const questionMark = value.indexOf('?');
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const numberSign = value.indexOf('#');
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const slash = value.indexOf('/');
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if (
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// If there is no protocol, it’s relative.
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colon < 0 ||
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// If the first colon is after a `?`, `#`, or `/`, it’s not a protocol.
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slash > -1 && colon > slash || questionMark > -1 && colon > questionMark || numberSign > -1 && colon > numberSign ||
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// It is a protocol, it should be allowed.
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protocol.test(value.slice(0, colon))) {
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return value;
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}
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return '';
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}
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/**
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* Normalize a URL.
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*
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* Encode unsafe characters with percent-encoding, skipping already encoded
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* sequences.
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*
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* @param {string} value
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* URI to normalize.
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* @returns {string}
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* Normalized URI.
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*/
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export function normalizeUri(value) {
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/** @type {Array<string>} */
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const result = [];
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let index = -1;
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let start = 0;
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let skip = 0;
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while (++index < value.length) {
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const code = value.charCodeAt(index);
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/** @type {string} */
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let replace = '';
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// A correct percent encoded value.
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if (code === 37 && asciiAlphanumeric(value.charCodeAt(index + 1)) && asciiAlphanumeric(value.charCodeAt(index + 2))) {
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skip = 2;
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}
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// ASCII.
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else if (code < 128) {
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if (!/[!#$&-;=?-Z_a-z~]/.test(String.fromCharCode(code))) {
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replace = String.fromCharCode(code);
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}
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}
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// Astral.
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else if (code > 55_295 && code < 57_344) {
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const next = value.charCodeAt(index + 1);
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// A correct surrogate pair.
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if (code < 56_320 && next > 56_319 && next < 57_344) {
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replace = String.fromCharCode(code, next);
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skip = 1;
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}
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// Lone surrogate.
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else {
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replace = "\uFFFD";
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}
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}
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// Unicode.
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else {
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replace = String.fromCharCode(code);
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}
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if (replace) {
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result.push(value.slice(start, index), encodeURIComponent(replace));
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start = index + skip + 1;
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replace = '';
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}
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if (skip) {
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index += skip;
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skip = 0;
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}
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}
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return result.join('') + value.slice(start);
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} |