Code block attachments use Discord supported types

This commit is contained in:
Cadence Ember 2026-05-12 14:06:43 +12:00
commit 2aff1fbd06
3 changed files with 423 additions and 1 deletions

View file

@ -182,6 +182,394 @@ function filterTo(xs, fn) {
return filtered
}
const supportedPlaintextPreviewExtensions = new Set([
"4d",
"abnf",
"accesslog",
"actionscript",
"ada",
"adoc",
"alan",
"angelscript",
"ansi",
"apache",
"apacheconf",
"applescript",
"arcade",
"arduino",
"arm",
"armasm",
"as",
"asc",
"asciidoc",
"aspectj",
"ass",
"atom",
"autohotkey",
"autoit",
"avrasm",
"awk",
"axapta",
"bash",
"basic",
"bat",
"bbcode",
"bf",
"bind",
"blade",
"bnf",
"brainfuck",
"c",
"c++",
"cal",
"capnp",
"capnproto",
"cc",
"chaos",
"chapel",
"chpl",
"cisco",
"clj",
"clojure",
"cls",
"cmake.in",
"cmake",
"cmd",
"coffee",
"coffeescript",
"console",
"coq",
"cos",
"cpc",
"cpp",
"cr",
"craftcms",
"crm",
"crmsh",
"crystal",
"cs",
"csharp",
"cshtml",
"cson",
"csp",
"css",
"csv",
"cxx",
"cypher",
"d",
"dart",
"delphi",
"dfm",
"diff",
"django",
"dns",
"docker",
"dockerfile",
"dos",
"dpr",
"dsconfig",
"dst",
"dts",
"dust",
"dylan",
"ebnf",
"elixir",
"elm",
"erl",
"erlang",
"ex",
"extempore",
"f90",
"f95",
"fix",
"fortran",
"freepascal",
"fs",
"fsharp",
"gams",
"gauss",
"gawk",
"gcode",
"gdscript",
"gemspec",
"gf",
"gherkin",
"glsl",
"gms",
"gn",
"gni",
"go",
"godot",
"golang",
"golo",
"gololang",
"gradle",
"graph",
"groovy",
"gss",
"gyp",
"h",
"h++",
"haml",
"handlebars",
"haskell",
"haxe",
"hbs",
"hcl",
"hh",
"hpp",
"hs",
"html.handlebars",
"html.hbs",
"html",
"http",
"https",
"hx",
"hxx",
"hy",
"hylang",
"i",
"i7",
"iced",
"iecst",
"inform7",
"ini",
"ino",
"instances",
"iol",
"irb",
"irpf90",
"java",
"javascript",
"jinja",
"jolie",
"js",
"json",
"jsp",
"jsx",
"julia-repl",
"julia",
"k",
"kaos",
"kdb",
"kotlin",
"kt",
"lasso",
"lassoscript",
"lazarus",
"ldif",
"leaf",
"lean",
"less",
"lfm",
"lisp",
"livecodeserver",
"livescript",
"ln",
"lock",
"log",
"lpr",
"ls",
"ls",
"lua",
"mak",
"make",
"makefile",
"markdown",
"mathematica",
"matlab",
"mawk",
"maxima",
"md",
"mel",
"mercury",
"mirc",
"mizar",
"mk",
"mkd",
"mkdown",
"ml",
"ml",
"mm",
"mma",
"mojolicious",
"monkey",
"moon",
"moonscript",
"mrc",
"n1ql",
"nawk",
"nc",
"never",
"nginx",
"nginxconf",
"nim",
"nimrod",
"nix",
"nsis",
"obj-c",
"obj-c++",
"objc",
"objective-c++",
"objectivec",
"ocaml",
"ocl",
"ol",
"openscad",
"osascript",
"oxygene",
"p21",
"parser3",
"pas",
"pascal",
"patch",
"pcmk",
"perl",
"pf.conf",
"pf",
"pgsql",
"php",
"php3",
"php4",
"php5",
"php6",
"php7",
"pl",
"plaintext",
"plist",
"pm",
"podspec",
"pony",
"postgres",
"postgresql",
"powershell",
"pp",
"processing",
"profile",
"prolog",
"properties",
"proto",
"protobuf",
"ps",
"ps1",
"puppet",
"py",
"pycon",
"python-repl",
"python",
"qml",
"r",
"razor-cshtml",
"razor",
"rb",
"re",
"reasonml",
"rebol",
"red-system",
"red",
"redbol",
"rf",
"rib",
"robot",
"rpm-spec",
"rpm-specfile",
"rpm",
"rs",
"rsl",
"rss",
"ruby",
"ruleslanguage",
"rust",
"sas",
"SAS",
"sc",
"scad",
"scala",
"scheme",
"sci",
"scilab",
"scl",
"scss",
"sh",
"shell",
"shexc",
"smali",
"smalltalk",
"sml",
"sol",
"solidity",
"spec",
"specfile",
"sql",
"srt",
"ssa",
"st",
"stan",
"stanfuncs",
"stata",
"step",
"stp",
"structured-text",
"styl",
"stylus",
"subunit",
"supercollider",
"svelte",
"svg",
"swift",
"tao",
"tap",
"tcl",
"terraform",
"tex",
"text",
"tf",
"thor",
"thrift",
"tk",
"toml",
"tp",
"ts",
"tsql",
"tsx",
"ttml",
"twig",
"txt",
"typescript",
"unicorn-rails-log",
"v",
"vala",
"vb",
"vba",
"vbnet",
"vbs",
"vbscript",
"verilog",
"vhdl",
"vim",
"vtt",
"wl",
"x++",
"x86asm",
"xhtml",
"xjb",
"xl",
"xml",
"xpath",
"xq",
"xquery",
"xsd",
"xsl",
"xtlang",
"xtm",
"yaml",
"yml",
"zep",
"zephir",
"zone",
"zsh"
])
module.exports.getPermissions = getPermissions
module.exports.getDefaultPermissions = getDefaultPermissions
module.exports.hasPermission = hasPermission
@ -194,3 +582,4 @@ module.exports.timestampToSnowflakeInexact = timestampToSnowflakeInexact
module.exports.getPublicUrlForCdn = getPublicUrlForCdn
module.exports.howOldUnbridgedMessage = howOldUnbridgedMessage
module.exports.filterTo = filterTo
module.exports.supportedPlaintextPreviewExtensions = supportedPlaintextPreviewExtensions

View file

@ -894,7 +894,8 @@ async function eventToMessage(event, guild, channel, di) {
let preNode
if (node.nodeType === 3 && node.nodeValue.includes("```") && (preNode = nodeIsChildOf(node, ["PRE"]))) {
if (preNode.firstChild?.nodeName === "CODE") {
const ext = preNode.firstChild.className.match(/language-(\S+)/)?.[1] || "txt"
let ext = preNode.firstChild.className.match(/language-(\S+)/)?.[1]
if (!dUtils.supportedPlaintextPreviewExtensions.has(ext)) ext = "txt"
const filename = `inline_code.${ext}`
// Build the replacement <code> node
const replacementCode = doc.createElement("code")

View file

@ -1155,6 +1155,38 @@ test("event2message: code blocks are uploaded as attachments instead if they con
)
})
test("event2message: code blocks are uploaded as attachments instead if they contain incompatible backticks (use txt extension if discord does not recognise the language)", async t => {
t.deepEqual(
await eventToMessage({
type: "m.room.message",
sender: "@cadence:cadence.moe",
content: {
msgtype: "m.text",
body: "wrong body",
format: "org.matrix.custom.html",
formatted_body: 'So if you run code like this<pre><code class="language-if">System.out.println("```");</code></pre>it should print a markdown formatted code block'
},
event_id: "$pGkWQuGVmrPNByrFELxhzI6MCBgJecr5I2J3z88Gc2s",
room_id: "!kLRqKKUQXcibIMtOpl:cadence.moe"
}),
{
ensureJoined: [],
messagesToDelete: [],
messagesToEdit: [],
messagesToSend: [{
username: "cadence [they]",
content: "So if you run code like this `[inline_code.txt]` it should print a markdown formatted code block",
attachments: [{id: "0", filename: "inline_code.txt"}],
pendingFiles: [{name: "inline_code.txt", buffer: Buffer.from('System.out.println("```");')}],
avatar_url: undefined,
allowed_mentions: {
parse: ["users", "roles"]
}
}]
}
)
})
test("event2message: code blocks are uploaded as attachments instead if they contain incompatible backticks (default to txt file extension)", async t => {
t.deepEqual(
await eventToMessage({