ANSI escapes working in some semblence

src/app/[...file]/content.tsx

@@ -2,29 +2,58 @@
 
 import { useState, useEffect } from 'react'
 
-import Error   from './types/error';
+import NetworkError     from './types/error/network';
+import ContentTypeError from './types/error/content_type';
 import Image            from './types/image';
+import Terminal         from './types/terminal';
 import Text             from './types/text';
 
+type ContentType<T> = {
+	content_type: RegExp,
+	extension: RegExp,
+	emit: () => undefined | Processor<T>,
+};
+type Processor<T> = {
+	process:     (response: Response) => Promise<T>,
+	postprocess: (data: T) => undefined,
+};
+
+function not_match(regex: RegExp | undefined, str: string) {
+	return !(regex ?? /(?:)/).test(str);
+}
+
+function is_type(response: Response, type: ContentType<Any>) {
+	if (not_match(type.content_type, response.headers.get('Content-Type').split(';')[0])) {
+		return false;
+	} else if (not_match(type.path, window.location.pathname)) {
+		return false;
+	}
+	return true;
+}
+
 export default function Content({ src }: { src: string}) {
 	const [content, set_content] = useState();
 
-	type ContentType<T> = {
-		matcher: RegExp,
-		emit: () => undefined | Processor<T>,
-	};
-	type Processor<T> = {
-		process:     (response: Response) => Promise<T>,
-		postprocess: (data: T) => undefined,
-	};
-
 	const recognized_types: ContentType<Any>[] = [{
-		matcher: /image\/\w+/,
+		content_type: /image\/\w+/,
 		emit: () => {
 			set_content(<Image src={src} />);
 		},
 	}, {
-		matcher: /text\/\w+/,
+		content_type: /application\/octet-stream/,
+		path: /.*\.term/,
+		emit: () => {
+			return {
+				process: (response: Response) => {
+					return response.text();
+				},
+				postprocess: (data: string) => {
+					set_content(<Terminal text={data} />);
+				}
+			};
+		}
+	}, {
+		content_type: /(text\/\w+)|(application\/octet-stream)/,
 		emit: () => {
 			return {
 				process: (response: Response) => {
@@ -42,8 +71,8 @@ export default function Content({ src }: { src: string}) {
 			const result = fetch(src)
 				.then(response => {
 					const content_type = response.headers.get('Content-Type').split(';')[0];
-					for (let type of recognized_types) {
+					for (const type of recognized_types) {
-						if (type.matcher.test(content_type)) {
+						if (type.content_type.test(content_type)) {
 							const emitted = type.emit();
 							if (emitted != undefined) {
 								result.then(emitted.postprocess);
@@ -52,7 +81,10 @@ export default function Content({ src }: { src: string}) {
 							return;
 						}
 					}
-					set_content(<Error content_type={content_type} />);
+					set_content(<ContentTypeError content_type={content_type} />);
+				})
+				.catch(err => {
+					set_content(<NetworkError err={err} />);
 				});
 		}
 	}, []);

src/app/[...file]/types/error.tsx

@@ -1,3 +0,0 @@
-export default function Error({ content_type }: { content_type: string }) {
-	return <p>{`Unrecognised MIME type: ${content_type}`}</p>
-}

src/app/[...file]/types/error/content_type.tsx

@@ -0,0 +1,3 @@
+export default function ContentTypeError({ content_type }: { content_type: string }) {
+	return <p>{`Unrecognised MIME type: ${content_type}`}</p>
+}

src/app/[...file]/types/error/network.tsx

@@ -0,0 +1,3 @@
+export default function NetworkError({ err }: { err: string }) {
+	return <p>{`Error: ${err}`}</p>;
+}

src/app/[...file]/types/terminal.css.ts

@@ -0,0 +1,13 @@
+import { style } from '@vanilla-extract/css'
+
+import * as colors from '../../colors.css'
+
+
+export const content = style({
+	margin:     0,
+	fontFamily: 'monospace',
+	fontSize:   '1.1em',
+	lineHeight: '1.4em',
+	whiteSpace: 'pre-wrap',
+	tabSize:    4,
+});

src/app/[...file]/types/terminal.tsx

@@ -0,0 +1,66 @@
+import * as style from './terminal.css';
+
+const ansi_normal_colors = [
+	"#000000",
+	"#bc2232",
+	"#2e9662",
+	"#a55d14",
+	"#2f5dab",
+	"#694Caa",
+	"#006080",
+	"#a5a2af",
+];
+
+const ansi_bright_colors = [
+	"#44444f",
+	"#f22c40",
+	"#39bb7a",
+	"#d6781a",
+	"#407ee7",
+	"#8466ea",
+	"#0082ad",
+	"#FFFFFF",
+];
+
+function ansi(text: string) {
+	const segments    = text.split(/(?=\033)/g);
+	const spans       = [];
+	const style       = {
+		color:           undefined,
+		backgroundColor: undefined,
+		fontWeight:      undefined,
+	}
+	for (const [index, segment] of segments.entries()) {
+		const ansi_segment = segment.match(/\033\[(\d+;)*(\d+)m/g)[0]
+		console.log(ansi_segment);
+		const escape_codes = [
+			...
+			ansi_segment.matchAll(/\d+/g)
+		].map(element => element[0]);
+		for (const code of escape_codes) {
+			if (code == 0) {
+				style.color           = undefined;
+				style.backgroundColor = undefined;
+				style.fontWeight      = undefined;
+			} else if (code == 1) {
+				style.fontWeight = 'bold';
+			} else if (30 <= code && code <= 37) {
+				style.color = ansi_normal_colors[code - 30];
+			} else if (90 <= code && code <= 97) {
+				style.color = ansi_bright_colors[code - 90];
+			} else if (40 <= code && code <= 47) {
+				style.backgroundColor = ansi_bright_colors[code - 40];
+			} else if (100 <= code && code <= 107) {
+				style.backgroundColor = ansi_bright_colors[code - 100];
+			}
+		}
+		spans.push(<span key={index} style={{...style}}>{segment.substring(ansi_segment.length)}</span>);
+	}
+	return spans;
+}
+
+export default function Terminal({ text }: { text: string }) {
+	return (
+		<p className={style.content}>{ansi(text)}</p>
+	);
+}

src/app/[...file]/types/text.css.ts

@@ -1,6 +1,27 @@
 import { style } from '@vanilla-extract/css'
 
-export const text = style({
+import * as colors from '../../colors.css'
+
+export const group = style({
+	display:    'flex',
 	fontFamily: 'monospace',
+	fontSize:   '1.1em',
+	lineHeight: '1.4em',
 	whiteSpace: 'pre-wrap',
+	tabSize:    4,
+});
+
+export const line_numbers = style({
+	margin:       0,
+	marginRight:  '0.5em',
+	borderRight:  `1px solid ${colors.background2}`,
+	paddingRight: '0.5em',
+	color:        colors.foreground2,
+});
+
+export const content = style({
+});
+
+export const text = style({
+	margin: 0,
 });

src/app/[...file]/types/text.tsx

@@ -1,7 +1,33 @@
-import * as style from './text.css'
+import { useLayoutEffect, useRef } from 'react';
+
+import * as style from './text.css';
 
 export default function Text({ text }: { text: string }) {
+	const lines = text.split('\n');
+	const refs  = lines.map(() => useRef(null));
+
+	useLayoutEffect(() => {
+		for (let line of lines) {
+			
+		}
+	}, []);
+
 	return (
-		<p className={style.text}>{text}</p>
+		<div className={style.group}>
+			<div className={style.line_numbers}>
+				{lines.map((_, index) => {
+					return <p key={index} className={style.text}>{index}</p>;
+				})}
+			</div>
+			<div className={style.content}>
+				{lines.map((line, index) => {
+					if (line != '') {
+						return <p ref={refs[index]} key={index} className={style.text}>{line}</p>;
+					} else {
+						return <p ref={refs[index]} key={index} className={style.text}>{'\n'}</p>;
+					}
+				})}
+			</div>
+		</div>
 	);
 }