Browse Source

Separate katex-server into own repo.

separate-katex-repo
Jan Černohorský 2 months ago
parent
commit
b0ff66abd1
  1. 3
      .gitmodules
  2. 1
      katex-server
  3. 1
      src/formatitko/katex-server/.gitignore
  4. 1
      src/formatitko/katex-server/README.md
  5. 1
      src/formatitko/katex-server/index.js
  6. 131
      src/formatitko/katex-server/index.mjs
  7. 39
      src/formatitko/katex-server/package-lock.json
  8. 14
      src/formatitko/katex-server/package.json

3
.gitmodules

@ -1,3 +1,6 @@
[submodule "ucwmac"]
path = ucwmac
url = git://git.ucw.cz/ucwmac.git
[submodule "katex-server"]
path = katex-server
url = https://gitea.ks.matfyz.cz/KSP/formatitko-katex-server.git

1
katex-server

@ -0,0 +1 @@
Subproject commit 9a122d9ee999a4e14f3543fd9f01d38de40a7706

1
src/formatitko/katex-server/.gitignore

@ -1 +0,0 @@
node_modules

1
src/formatitko/katex-server/README.md

@ -1 +0,0 @@
This was made by Standa Lukeš @exyi

1
src/formatitko/katex-server/index.js

@ -1 +0,0 @@
console.log(require('katex').renderToString('\\frac{2a}{b}'))

131
src/formatitko/katex-server/index.mjs

@ -1,131 +0,0 @@
// KaTeX rendering server
// Listens on unix socket, path is provided as first argument
// Expects JSON lines, each line is a query with the following schema:
// {
// formulas: [
// {
// tex: string,
// options?: object
// }
// ],
// options?: object
// }
// see https://katex.org/docs/options.html for list of available options
// If options formulas[].options field is used, the global options field is ignored.
// For each line, returns one JSON line with the following schema:
// {
// results: [
// { html?: string } | { error?: string }
// ]
// } | { error?: string }
// If one formula is invalid, the error in results is used
// If the entire query is invalid (couldn't parse JSON, for example), the outer error field is used
import katex from 'katex'
import net from 'net'
import * as readline from 'readline'
const myArgs = process.argv.slice(2)
const unixSocketPath = myArgs[0]
if (!unixSocketPath) {
console.error('you must specify socket path')
process.exit(1)
}
// This server listens on a Unix socket at /var/run/mysocket
var unixServer = net.createServer(handleClient);
unixServer.listen(unixSocketPath);
console.log("OK")
function handleExit(signal) {
// unixServer.emit('close')
unixServer.close(function () {
});
process.exit(0); // put this into the callback to avoid closing open connections
}
process.on('SIGINT', handleExit);
process.on('SIGQUIT', handleExit);
process.on('SIGTERM', handleExit);
process.on('exit', handleExit);
const defaultOptions = {}
/**
* @param {net.Socket} socket
* @returns {Promise<void>}
* */
function socketWrite(socket, data) {
return new Promise((resolve, reject) => {
socket.write(data, (err) => {
if (err) {
reject(err)
} else {
resolve()
}
})
})
}
/**
* @param {net.Socket} client
* */
async function handleClient(client) {
const rl = readline.createInterface({ input: client })
/* Added by GS: A stack of katex's `macros` objects, each group inherits
* the one from the parent group and can add its own stuff without
* affecting the parent.
*/
let macroStack = [{}]
for await (const line of rl) {
try {
// The custom commands for pushing and popping the macro stack.
if (line === "begingroup") {
// Copy the current state of macros and push it onto the stack.
macroStack.push({...macroStack.slice(-1)[0]})
continue
} else if (line === "endgroup") {
macroStack.pop()
continue
} else if (line === "init") {
macroStack = [{}]
continue
}
const query = JSON.parse(line)
const results = []
for (const input of query.formulas) {
const options = input.options ?? query.options ?? defaultOptions
// Add macros from the macros option
if (options.macros) {
for (const macro of Object.keys(options.macros)) {
macroStack.slice(-1)[macro] = options.macros[macro]
}
}
options.macros = macroStack.slice(-1)[0]
// Enforce globalGroup option, katex then saves created macros
// into the options.macros object.
options.globalGroup = true
try {
const html = katex.renderToString(input.tex, options)
results.push({ html })
} catch (e) {
results.push({ error: String(e) })
}
}
await socketWrite(client, JSON.stringify({ results }, null, query.debug ? ' ' : undefined))
await socketWrite(client, '\n')
} catch (e) {
console.error(e)
await socketWrite(client, JSON.stringify({ error: String(e) }))
await socketWrite(client, '\n')
}
}
}

39
src/formatitko/katex-server/package-lock.json

@ -1,39 +0,0 @@
{
"name": "ksp-katex-server",
"version": "1.0.0",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "ksp-katex-server",
"version": "1.0.0",
"license": "ISC",
"dependencies": {
"katex": "^0.16.3"
}
},
"node_modules/commander": {
"version": "8.3.0",
"resolved": "https://registry.npmjs.org/commander/-/commander-8.3.0.tgz",
"integrity": "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==",
"engines": {
"node": ">= 12"
}
},
"node_modules/katex": {
"version": "0.16.3",
"resolved": "https://registry.npmjs.org/katex/-/katex-0.16.3.tgz",
"integrity": "sha512-3EykQddareoRmbtNiNEDgl3IGjryyrp2eg/25fHDEnlHymIDi33bptkMv6K4EOC2LZCybLW/ZkEo6Le+EM9pmA==",
"funding": [
"https://opencollective.com/katex",
"https://github.com/sponsors/katex"
],
"dependencies": {
"commander": "^8.0.0"
},
"bin": {
"katex": "cli.js"
}
}
}
}

14
src/formatitko/katex-server/package.json

@ -1,14 +0,0 @@
{
"name": "ksp-katex-server",
"version": "1.0.0",
"description": "",
"main": "index.mjs",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"dependencies": {
"katex": "^0.16.3"
}
}
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