Started working on KaTeX integration.
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parent
aa46599f2e
commit
f71eea3c06
8 changed files with 160 additions and 2 deletions
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@ -10,6 +10,7 @@ from transform import transform
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from util import *
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from context import Context
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from html import html
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from katex import KatexClient
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from mj_show import show
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@ -22,5 +23,7 @@ doc = doc.walk(transform, context)
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print("---------------------")
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#print(show(doc))
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#print(convert_text(doc, input_format="panflute", output_format="markdown"))
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open("output.html", "w").write("<head> <meta charset='utf-8'> </head>" + html(doc))
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#open("output.html", "w").write("<head> <meta charset='utf-8'> </head>" + html(doc))
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k = KatexClient()
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input()
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print(k)
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1
katex-server/.gitignore
vendored
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1
katex-server/.gitignore
vendored
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@ -0,0 +1 @@
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node_modules
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1
katex-server/README.md
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1
katex-server/README.md
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@ -0,0 +1 @@
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This was made by Standa Lukeš @exyi
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1
katex-server/index.js
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1
katex-server/index.js
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@ -0,0 +1 @@
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console.log(require('katex').renderToString('\\frac{2a}{b}'))
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105
katex-server/index.mjs
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105
katex-server/index.mjs
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@ -0,0 +1,105 @@
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// KaTeX rendering server
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// Listens on unix socket, path is provided as first argument
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// Expects JSON lines, each line is a query with the following schema:
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// {
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// formulas: [
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// {
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// tex: string,
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// options?: object
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// }
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// ],
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// options?: object
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// }
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// see https://katex.org/docs/options.html for list of available options
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// If options formulas[].options field is used, the global options field is ignored.
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// For each line, returns one JSON line with the following schema:
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// {
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// results: [
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// { html?: string } | { error?: string }
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// ]
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// } | { error?: string }
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// If one formula is invalid, the error in results is used
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// If the entire query is invalid (couldn't parse JSON, for example), the outer error field is used
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import katex from 'katex'
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import net from 'net'
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import * as readline from 'readline'
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const myArgs = process.argv.slice(2)
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const unixSocketPath = myArgs[0]
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if (!unixSocketPath) {
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console.error('you must specify socket path')
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process.exit(1)
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}
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// This server listens on a Unix socket at /var/run/mysocket
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var unixServer = net.createServer(handleClient);
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unixServer.listen(unixSocketPath);
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function handleExit(signal) {
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// unixServer.emit('close')
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unixServer.close(function () {
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});
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process.exit(0); // put this into the callback to avoid closing open connections
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}
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process.on('SIGINT', handleExit);
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process.on('SIGQUIT', handleExit);
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process.on('SIGTERM', handleExit);
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process.on('exit', handleExit);
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const defaultOptions = {}
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/**
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* @param {net.Socket} socket
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* @returns {Promise<void>}
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* */
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function socketWrite(socket, data) {
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return new Promise((resolve, reject) => {
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socket.write(data, (err) => {
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if (err) {
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reject(err)
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} else {
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resolve()
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}
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})
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})
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}
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/**
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* @param {net.Socket} client
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* */
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async function handleClient(client) {
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const rl = readline.createInterface({ input: client })
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for await (const line of rl) {
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try {
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const query = JSON.parse(line)
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const results = []
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for (const input of query.formulas) {
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const options = input.options ?? query.options ?? defaultOptions
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try {
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const html = katex.renderToString(input.tex, options)
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results.push({ html })
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} catch (e) {
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results.push({ error: String(e) })
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}
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}
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await socketWrite(client, JSON.stringify({ results }, null, query.debug ? ' ' : undefined))
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await socketWrite(client, '\n')
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} catch (e) {
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console.error(e)
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await socketWrite(client, JSON.stringify({ error: String(e) }))
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await socketWrite(client, '\n')
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}
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}
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}
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21
katex-server/package-lock.json
generated
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21
katex-server/package-lock.json
generated
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@ -0,0 +1,21 @@
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{
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"name": "ksp-katex-server",
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"version": "1.0.0",
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"lockfileVersion": 1,
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"requires": true,
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"dependencies": {
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"commander": {
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"version": "8.3.0",
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"resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
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"integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww=="
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},
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"katex": {
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"version": "0.16.3",
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"resolved": "https://registry.npmjs.org/katex/-/katex-0.16.3.tgz",
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"integrity": "sha512-3EykQddareoRmbtNiNEDgl3IGjryyrp2eg/25fHDEnlHymIDi33bptkMv6K4EOC2LZCybLW/ZkEo6Le+EM9pmA==",
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"requires": {
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"commander": "^8.0.0"
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}
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}
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}
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}
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14
katex-server/package.json
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14
katex-server/package.json
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{
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"name": "ksp-katex-server",
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"version": "1.0.0",
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"description": "",
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"main": "index.mjs",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"author": "",
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"license": "ISC",
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"dependencies": {
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"katex": "^0.16.3"
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}
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}
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12
katex.py
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12
katex.py
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@ -0,0 +1,12 @@
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import socket
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import subprocess
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import tempfile
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class KatexClient:
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def __init__(self):
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self._client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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self._temp_dir = tempfile.TemporaryDirectory(prefix='formatitko')
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socket_file = self._temp_dir.name + "/katex-socket"
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self._client.bind(socket_file)
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self._server = subprocess.Popen(["node", "./katex-server/index.mjs", socket_file])
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