draft
some basic markdown parsing and tests
This commit is contained in:
jetstream0
2
.gitignore
vendored
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2
.gitignore
vendored
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@@ -0,0 +1,2 @@
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*.js
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tsconfig.json
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159
endosulfan.ts
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159
endosulfan.ts
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@@ -0,0 +1,159 @@
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export let total_tests: number = 0;
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export let failed_tests: number = 0;
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export let passed_tests: number = 0;
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export function test_assert(condition: boolean, test_name: string): boolean {
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total_tests++;
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if (condition) {
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passed_tests++;
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console.log(`\x1B[32mTEST PASS\x1B[m ${test_name}`);
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return true;
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} else {
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failed_tests++;
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console.log(`\x1B[31mTEST FAIL\x1B[m ${test_name}`);
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return false;
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}
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}
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type Difference = {
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start_index: number,
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end_index: number,
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};
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//items will probably be strings or numbers,
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//but any object that is comparable after a JSON.stringify() should be fine
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export function test_assert_equal(first_item: any, second_item: any, test_name: string, silent?: boolean) {
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if (typeof first_item !== typeof second_item) {
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throw Error("Cannot compare two items of different types!");
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}
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//if the items are objects (including arrays)
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if (typeof first_item === "object") {
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first_item = JSON.stringify(first_item);
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second_item = JSON.stringify(second_item);
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}
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let passed = test_assert(first_item === second_item, test_name);
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if (!silent && !passed) {
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//log info for debugging purposes
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//log both items
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console.log(`${test_name}:\n${first_item}\n${second_item}`);
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//log differences (partially effective)
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//don't log differences if not string
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if (typeof first_item !== "string") return;
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//get longest item
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let longer = first_item.length > second_item.length ? first_item : second_item;
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//get differrences, only kinda works
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let differences: Difference[] = [];
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let offset: number = 0;
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let dispute_length: number = 0;
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for (let i=0; i < longer.length; i++) {
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if (first_item[i] === second_item[i-offset]) {
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if (i === 9) {
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console.log(offset)
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}
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continue;
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} else {
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if (dispute_length > 0) {
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//last loop
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if (i === longer.length-1) {
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dispute_length++;
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differences.push({
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start_index: i-dispute_length,
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end_index: i,
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});
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continue;
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}
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//see if dispute ends or continues (two characters must match)
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for (let ii=0; ii < dispute_length; ii++) {
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//change offset and add difference
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if (first_item[i] === second_item[i-dispute_length-ii] && first_item[i+1] === second_item[i-dispute_length-ii+1]) {
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differences.push({
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start_index: i-dispute_length,
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end_index: i-1,
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});
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offset = dispute_length-ii;
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dispute_length = 0;
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break;
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} else if (first_item[i] === second_item[i-dispute_length+ii] && first_item[i+1] === second_item[i-dispute_length+ii+1]) {
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differences.push({
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start_index: i-dispute_length,
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end_index: i-1,
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});
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offset = dispute_length+ii;
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dispute_length = 0;
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break;
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}
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}
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if (dispute_length === 0) {
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//dispute ends
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continue;
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}
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}
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dispute_length++;
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}
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/*
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if (first_item[i] !== second_item[i]) {
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if (first_item[i] === second_item[i-offset]) {
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continue;
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}
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//add to differences
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//if already existing difference, add to it
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let current_diff = differences.findIndex((diff) => i === diff.end_index+1);
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if (current_diff !== -1) {
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differences[current_diff].end_index = i;
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} else {
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//create new difference
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differences.push({
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start_index: i,
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end_index: i,
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});
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}
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offset++;
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}
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*/
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}
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//differences not really working right now, only log the first difference
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differences = differences.length > 0 ? [differences[0]] : [];
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for (let j=0; j < differences.length; j++) {
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let diff: Difference = differences[j];
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let start_i: number = diff.start_index;
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let end_i: number = diff.end_index;
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if (diff.start_index === diff.end_index) {
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console.log(`Difference at index ${start_i}:`);
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console.log(`${first_item.slice(start_i-2, start_i)}\x1B[30;44m${first_item[start_i]}\x1B[m${first_item.slice(start_i+1,start_i+3)}`);
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console.log(`${second_item.slice(start_i-2, start_i)}\x1B[30;44m${second_item[start_i]}\x1B[m${second_item.slice(start_i+1,start_i+3)}`);
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} else {
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//multi character difference
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console.log(`Difference at indexes ${start_i} to ${end_i}:`);
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console.log(`${first_item.slice(start_i-2, start_i)}\x1B[30;44m${first_item.slice(start_i, end_i+1)}\x1B[m${first_item.slice(end_i+1,end_i+3)}`);
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console.log(`${second_item.slice(start_i-2, start_i)}\x1B[30;44m${second_item.slice(start_i, end_i+1)}\x1B[m${second_item.slice(end_i+1,end_i+3)}`);
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}
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}
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}
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}
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export type Warning = {
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type: string,
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message: string,
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line_number?: number,
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};
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export type WarningFunction = (input: any) => Warning[];
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export function generate_warnings(input: any, warning_function: WarningFunction, ignore_types: string[]) {
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let warnings: Warning[] = warning_function(input);
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let ignore_count: number = 0;
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for (let i=0; i < warnings.length; i++) {
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let warning: Warning = warnings[i];
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if (ignore_types.includes(warning.type)) {
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ignore_count++;
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continue;
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}
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if (warning.line_number) {
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console.log(`\x1B[33mWarning at ${warning.line_number}:\x1B[m "${warning.message}" (type: ${warning.type})`);
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} else {
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console.log(`\x1B[33mWarning:\x1B[m "${warning.message} (type: ${warning.type})"`);
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}
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}
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console.log(`\x1B[33m${warnings.length} warnings (${ignore_count} suppressed)\x1B[m`);
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}
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42
index.ts
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42
index.ts
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@@ -0,0 +1,42 @@
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import { parse_md_to_html } from './makoto';
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import { test_assert_equal, total_tests, failed_tests, passed_tests } from './endosulfan';
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/*
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Quirks
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- Will only put newlines after headings, paragraphs, and horizontal rules, all others will not be in final output (exception is it will not put a newline on the last line)
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-
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*/
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//tests
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test_assert_equal(parse_md_to_html("a\n\n\nb"), "<p>a</p>\n<p>b</p>", "new line test 1");
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test_assert_equal(parse_md_to_html("a\n\n\nb\n"), "<p>a</p>\n<p>b</p>", "new line test 2");
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test_assert_equal(parse_md_to_html("a\n\n\nb\n\n"), "<p>a</p>\n<p>b</p>", "new line test 3");
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test_assert_equal(parse_md_to_html("# testing\n## Heading#\n# Chee see\nlorem ipsum"), "<h1 id='header-0'>testing</h1>\n<h2 id='header-1'>Heading#</h2>\n<h1 id='header-2'>Chee see</h1>\n<p>lorem ipsum</p>", "heading test 1");
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test_assert_equal(parse_md_to_html("in the sam#e way# bricks don't\n# Yay\n#a# b"), "<p>in the sam#e way# bricks don't</p>\n<h1 id='header-0'>Yay</h1>\n<p>#a# b</p>", "heading test 2");
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test_assert_equal(parse_md_to_html("# <script>a\<bc</script>"), "<h1 id='header-0'><script>a<bc</script></h1>", "sanitize test");
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test_assert_equal(parse_md_to_html("# tet offensive\n"), "<h1 id='header-0'>tet offensive</h1>", "heading test 3");
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test_assert_equal(parse_md_to_html("**test abc** *a*\n## **ch*ch**"), "<p><b>test abc</b> <i>a</i></p>\n<h2 id='header-0'><b>ch*ch</b></h2>", "bold italic test 1");
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test_assert_equal(parse_md_to_html("****a*"), "<p><b></b>a*</p>", "bold italic test 2");
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test_assert_equal(parse_md_to_html("---\n--\n----\n--a-\n---"), "<hr>\n<p>--</p>\n<hr>\n<p>--a-</p>\n<hr>", "horizontal rule test");
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test_assert_equal(parse_md_to_html("\\*\\*cheese\\*\\*\n*\\*cheese\\*\\*"), "<p>**cheese**</p>\n<p><i>*cheese*</i></p>", "backslash test");
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test_assert_equal(parse_md_to_html("asdf\n"), "<p>asdf<img src=\"/images/ming-dynasty.png\" alt=\"alt text\"></p>\n<img src=\"https://burger.com/burger.png\" alt=\"(burger!)\">", "image test");
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test_assert_equal(parse_md_to_html("asdf"), "<p>asdf</p>", "invalid image test");
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test_assert_equal(parse_md_to_html("`e\ntesting `console.log('*koala*')`"), "<p>`e</p>\n<p>testing <code>console.log('*koala*')</code></p>", "code snippet test");
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//todo: links, blockquotes, ordered lists, unordered lists, table, code block
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console.log(`Total Passed: \x1B[32m${passed_tests}/${total_tests}\x1B[m\nTotal Failed: \x1B[31m${failed_tests}/${total_tests}\x1B[m`);
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283
makoto.ts
Normal file
283
makoto.ts
Normal file
@@ -0,0 +1,283 @@
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import type { Warning } from './endosulfan';
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//some minor differences with markdown spec?
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export function parse_md_to_html(md: string): string {
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let html: string = "";
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let html_line: string = "";
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//markdown parsing vars
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let is_first_line: boolean = true;
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let backslashed: boolean = false;
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let heading_level: number = 0;
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let in_heading: boolean = false;
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let header_num: number = 0;
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let asterisk_num: number = 0;
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let asterisk_out_num: number = 0;
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let in_asterisk: boolean = false;
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let horizontal_num: number = 0;
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let horizontal_rule: boolean = false;
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let was_image: boolean = false;
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let image_alt: string | undefined = undefined;
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let image_src: string | undefined = undefined;
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let in_code: boolean = false;
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//loop through characters
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let chars: string = md;
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for (let i=0; i < chars.length; i++) {
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let char: string = chars[i];
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//console.log(char, asterisk_num, in_asterisk);
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//sanitize input
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if (char === "<") {
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char = "<";
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} else if (char === ">") {
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char = ">";
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}
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//handle backslashes
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if (backslashed) {
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backslashed = false;
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if (i !== chars.length-1) {
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html_line += char;
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continue;
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}
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}
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if (char === "\\" && chars[i+1] !== "\n") {
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backslashed = true;
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if (i === 0 || chars[i-1] === "\n") {
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html_line += "<p>";
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}
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continue;
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}
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//end of text or newline
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if (char === "\n" || i === chars.length-1) {
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if (is_first_line) {
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//it can only be the first line once :)
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is_first_line = false;
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}
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//if image was never completed
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if (image_alt !== undefined) {
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if (!html_line.startsWith("<p>")) {
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html_line = "<p>"+html_line;
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}
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html_line += "!["+image_alt;
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if (image_src !== undefined) {
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html_line += "]("+image_src;
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}
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image_alt = undefined;
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image_src = undefined;
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}
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//if last character
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if (i === chars.length-1 && char !== "\n") {
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let add_char: boolean = true;
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//if in code
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if (in_code && char === "`") {
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html_line += "</code>";
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add_char = false;
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}
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//if in horizontal rule
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if (horizontal_rule) {
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add_char = false;
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}
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//handle image just ending
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|
if (was_image && char === ")") {
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add_char = false;
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|
}
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//if previous character is also newline, there hasn't been opportunity to add a <p>, so add it!
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|
if (chars[i-1] === "\n") {
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|
html_line = "<p>";
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|
}
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//ending a bold/italic?
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if (in_asterisk && char === "*") {
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|
if (asterisk_num === 2 && chars[i-1] === "*") {
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html_line += "</b>";
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in_asterisk = false;
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asterisk_num = 0;
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add_char = false;
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|
} else if (asterisk_num === 1) {
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html_line += "</i>";
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in_asterisk = false;
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asterisk_num = 0;
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add_char = false;
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}
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}
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if (add_char) {
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html_line += char;
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|
}
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}
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html += html_line;
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|
if (html_line.startsWith("<p>")) {
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|
html += "</p>\n";
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|
}
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html_line = "";
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|
horizontal_num = 0;
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|
if (horizontal_rule || was_image) {
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|
if (i !== chars.length - 1 && html[html.length-1] !== "\n") {
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||||||
|
//only add new line if there isn't already one, and isn't last character
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|
html += "\n";
|
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|
} else if (i === chars.length - 1) {
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|
//remove newline
|
||||||
|
html = html.trim();
|
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|
}
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|
horizontal_rule = false;
|
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|
was_image = false;
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|
continue;
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|
}
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|
//ending a header, line break not needed
|
||||||
|
if (in_heading) {
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|
html += `</h${heading_level}>\n`;
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||||||
|
if (i === chars.length - 1) {
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||||||
|
//remove newline
|
||||||
|
html = html.trim();
|
||||||
|
}
|
||||||
|
heading_level = 0;
|
||||||
|
in_heading = false;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
heading_level = 0;
|
||||||
|
if (i === chars.length - 1) {
|
||||||
|
//remove newline
|
||||||
|
html = html.trim();
|
||||||
|
}
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
//handle code
|
||||||
|
if (char === "`" && !in_code) {
|
||||||
|
//make sure there is another ` in the line
|
||||||
|
let skip_next: boolean = false;
|
||||||
|
let end_found: boolean = false;
|
||||||
|
for (let ii=1; ii < chars.length-i; ii++) {
|
||||||
|
if (skip_next) {
|
||||||
|
skip_next = false;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (chars[i+ii] === "\\") {
|
||||||
|
skip_next = true;
|
||||||
|
} else if (chars[i+ii] === "\n") {
|
||||||
|
end_found = false;
|
||||||
|
break;
|
||||||
|
} else if (chars[i+ii] === "`") {
|
||||||
|
end_found = true;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (end_found) {
|
||||||
|
in_code = true;
|
||||||
|
html_line += "<code>";
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
} else if (char === "`" && in_code) {
|
||||||
|
html_line += "</code>";
|
||||||
|
continue;
|
||||||
|
} else if (in_code) {
|
||||||
|
html_line += char;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
//handle heading levels
|
||||||
|
//ensure headings are continuous and have after it ("#a##" or "##abc" are not a valid headings), and are at the beginning of the line
|
||||||
|
if (chars.slice(i-heading_level-1, i) === "\n"+"#".repeat(heading_level) || (is_first_line && chars.slice(0, i) === "#".repeat(heading_level))) {
|
||||||
|
if (char === "#" && !in_heading && heading_level <= 6) {
|
||||||
|
heading_level++;
|
||||||
|
continue;
|
||||||
|
} else if (heading_level > 0 && char === " " && !in_heading) {
|
||||||
|
in_heading = true;
|
||||||
|
html_line += `<h${heading_level} id='header-${header_num}'>`;
|
||||||
|
header_num++;
|
||||||
|
continue;
|
||||||
|
} else if (heading_level > 0) {
|
||||||
|
html_line += "<p>"+"#".repeat(heading_level);
|
||||||
|
heading_level = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
//handle horizontal rules
|
||||||
|
//similar code as headings to ensure beginning of the line, continuous
|
||||||
|
if (chars.slice(i-horizontal_num-1, i) === "\n"+"-".repeat(horizontal_num) || (is_first_line && chars.slice(0, i) === "-".repeat(horizontal_num))) {
|
||||||
|
if (char === "-") {
|
||||||
|
horizontal_num++;
|
||||||
|
if (horizontal_num === 3 || (horizontal_num === 2 && chars[chars.length-1] === "-" && i === chars.length-2)) {
|
||||||
|
horizontal_rule = true;
|
||||||
|
html_line = "<hr>";
|
||||||
|
} else if (horizontal_num < 3 && (chars[i+1] === "\n" || i === chars.length-2)) {
|
||||||
|
//if next is end or newline, but less than 3 '-'s, it is not a valid horizontal rule
|
||||||
|
html_line = "<p>"+"-".repeat(horizontal_num);
|
||||||
|
}
|
||||||
|
continue;
|
||||||
|
} else if (horizontal_num > 0) {
|
||||||
|
//no longer a horizontal line
|
||||||
|
html_line = "<p>"+"-".repeat(horizontal_num);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
//handle images
|
||||||
|
if (char === "!" && chars[i+1] === "[") {
|
||||||
|
continue;
|
||||||
|
} else if (char === "]" && chars[i+1] === "(" && image_alt !== undefined) {
|
||||||
|
continue;
|
||||||
|
} else if (char === "[" && chars[i-1] === "!" && image_alt === undefined && image_src === undefined) {
|
||||||
|
image_alt = "";
|
||||||
|
continue;
|
||||||
|
} else if (char === "(" && chars[i-1] === "]" && image_alt !== undefined) {
|
||||||
|
image_src = "";
|
||||||
|
continue;
|
||||||
|
} else if ((char === ")" || (chars[i+1] === ")" && i+1 === chars.length-1)) && image_src !== undefined) {
|
||||||
|
if (chars[i+1] === ")" && i+1 === chars.length-1) {
|
||||||
|
image_src += char;
|
||||||
|
}
|
||||||
|
html_line += `<img src="${image_src}" alt="${image_alt}">`;
|
||||||
|
was_image = true;
|
||||||
|
image_alt = undefined;
|
||||||
|
image_src = undefined;
|
||||||
|
continue;
|
||||||
|
} else if (image_alt !== undefined && image_src === undefined && !(char === "]" && chars[i+1] === "(")) {
|
||||||
|
image_alt += char;
|
||||||
|
continue;
|
||||||
|
} else if (image_src !== undefined) {
|
||||||
|
image_src += char;
|
||||||
|
continue;
|
||||||
|
} else {
|
||||||
|
was_image = false;
|
||||||
|
}
|
||||||
|
//add beginning paragraph
|
||||||
|
if (i === 0 || chars[i-1] === "\n") {
|
||||||
|
html_line += "<p>";
|
||||||
|
}
|
||||||
|
//handle italics and bolds
|
||||||
|
if (char === "*" && asterisk_num < 2 && !in_asterisk) {
|
||||||
|
asterisk_num++;
|
||||||
|
if (asterisk_num === 1 && chars[i+1] !== "*") {
|
||||||
|
html_line += "<i>";
|
||||||
|
in_asterisk = true;
|
||||||
|
} else if (asterisk_num === 2) {
|
||||||
|
html_line += "<b>";
|
||||||
|
in_asterisk = true;
|
||||||
|
}
|
||||||
|
continue;
|
||||||
|
} else if (char === "*" && in_asterisk) {
|
||||||
|
asterisk_out_num++;
|
||||||
|
if (asterisk_out_num === asterisk_num) {
|
||||||
|
if (asterisk_num === 1) {
|
||||||
|
html_line += "</i>";
|
||||||
|
} else if (asterisk_num === 2) {
|
||||||
|
html_line += "</b>";
|
||||||
|
}
|
||||||
|
in_asterisk = false;
|
||||||
|
asterisk_num = 0;
|
||||||
|
asterisk_out_num = 0;
|
||||||
|
continue;
|
||||||
|
} else if (asterisk_out_num === 1 && chars[i+1] === "*") {
|
||||||
|
//implied that asterisk_num === 2 here due to previous if statement
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
} else if (char !== "*" && in_asterisk) {
|
||||||
|
asterisk_out_num = 0;
|
||||||
|
}
|
||||||
|
//
|
||||||
|
html_line += char;
|
||||||
|
}
|
||||||
|
|
||||||
|
return html;
|
||||||
|
}
|
||||||
|
|
||||||
|
//WarningFunction to generate warnings and catch possible mistakes (eg: link not completed or possible space missing after #)
|
||||||
|
export function find_warnings(md: string): Warning[] {
|
||||||
|
let warnings: Warning[] = [];
|
||||||
|
//
|
||||||
|
return warnings;
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user