From 1b5af6f4bdfca939e780ae70bd6e1819425824f7 Mon Sep 17 00:00:00 2001
From: Jannis R <mail@jannisr.de>
Date: Sat, 2 May 2020 15:32:36 +0200
Subject: move code, server example :memo:

---
 lib/parser.js | 78 -----------------------------------------------------------
 1 file changed, 78 deletions(-)
 delete mode 100644 lib/parser.js

(limited to 'lib/parser.js')

diff --git a/lib/parser.js b/lib/parser.js
deleted file mode 100644
index a66a323..0000000
--- a/lib/parser.js
+++ /dev/null
@@ -1,78 +0,0 @@
-'use strict'
-
-const {Transform} = require('stream')
-const {MESSAGES} = require('./statuses')
-
-// https://gemini.circumlunar.space/docs/spec-spec.txt, 1.2
-// > Gemini requests are a single CRLF-terminated line with the
-// > following structure: <URL><CR><LF>
-// > <URL> is a UTF-8 encoded absolute URL, of maximum length
-// > 1024 bytes. [...]
-
-const CRLF = '\r\n'
-const MAX_HEADER_SIZE = 1024 + CRLF.length
-
-const createParser = () => {
-	let headerParsed = false
-	let peek = Buffer.alloc(0)
-
-	const invalid = () => {
-		peek = null
-		out.destroy(new Error('invalid Gemini request'))
-	}
-
-	const onData = (data) => {
-		if (headerParsed) {
-			out.push(data)
-			return;
-		}
-
-		peek = Buffer.concat([peek, data], peek.length + data.length)
-		if (
-			data.indexOf(CRLF) < 0 &&
-			peek.length < MAX_HEADER_SIZE
-		) return; // keep peeking
-
-		const iCRLF = peek.indexOf(CRLF)
-		if (iCRLF < 0) return invalid()
-
-		const url = peek.slice(0, iCRLF).toString('utf8')
-		headerParsed = true
-		out.emit('header', {url})
-
-		const iBody = iCRLF + 2
-		if (peek.length > (iBody + 1)) {
-			// `data` contains the beginning of the body
-			out.push(peek.slice(iBody))
-		}
-		peek = null // allow garbage collection
-	}
-
-	const out = new Transform({
-		write: (chunk, _, cb) => {
-			onData(chunk)
-			cb()
-		},
-		writev: (chunks, cb) => {
-			for (let i = 0; i < chunks.length; i++) {
-				onData(chunks[i].chunk)
-			}
-			cb()
-		},
-	})
-	return out
-}
-
-// const p = createParser()
-// p.on('error', console.error)
-// p.on('header', h => console.log('header', h))
-// p.on('data', d => console.log('data', d.toString('utf8')))
-// const b = str => Buffer.from(str, 'utf8')
-// p.write(b('gemini://examp'))
-// p.write(b('le.org/foo?bar#baz\r\nhel'))
-// p.end(b('lo server!'))
-
-module.exports = {
-	MESSAGES,
-	createParser,
-}
-- 
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