mirror of
https://github.com/discourse/discourse.git
synced 2024-12-25 03:16:19 +08:00
107 lines
2.4 KiB
JavaScript
107 lines
2.4 KiB
JavaScript
// inspired from https://github.com/markdown-it/markdown-it/blob/master/lib/rules_inline/html_inline.mjs
|
|
// note that allow lister will run on top of it, so if a tag is allowed here but not on
|
|
// the allow list, then it won't show up
|
|
|
|
const inline_names = ["kbd", "mark"];
|
|
|
|
const patterns = inline_names.join("|");
|
|
const attr_name = "[a-zA-Z_:][a-zA-Z0-9:._-]*";
|
|
const unquoted = "[^\"'=<>`\\x00-\\x20]+";
|
|
const single_quoted = "'[^']*'";
|
|
const double_quoted = '"[^"]*"';
|
|
const attr_value =
|
|
"(?:" + unquoted + "|" + single_quoted + "|" + double_quoted + ")";
|
|
const attribute = "(?:\\s+" + attr_name + "(?:\\s*=\\s*" + attr_value + ")?)";
|
|
const open_tag = `<(${patterns})` + attribute + "*\\s*\\/?>";
|
|
const close_tag = `<\\/(${patterns})\\s*>`;
|
|
const comment = "<!---?>|<!--(?:[^-]|-[^-]|--[^>])*-->";
|
|
const processing = "<[?][\\s\\S]*?[?]>";
|
|
const declaration = "<![A-Za-z][^>]*>";
|
|
const cdata = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>";
|
|
const HTML_TAG_RE = new RegExp(
|
|
"^(?:" +
|
|
open_tag +
|
|
"|" +
|
|
close_tag +
|
|
"|" +
|
|
comment +
|
|
"|" +
|
|
processing +
|
|
"|" +
|
|
declaration +
|
|
"|" +
|
|
cdata +
|
|
")"
|
|
);
|
|
|
|
function isLinkOpen(str) {
|
|
return /^<a[>\s]/i.test(str);
|
|
}
|
|
function isLinkClose(str) {
|
|
return /^<\/a\s*>/i.test(str);
|
|
}
|
|
|
|
function isLetter(ch) {
|
|
/*eslint no-bitwise:0*/
|
|
let lc = ch | 0x20; // to lower case
|
|
return lc >= 0x61 /* a */ && lc <= 0x7a /* z */;
|
|
}
|
|
|
|
function chatHtmlInlineRule(state, silent) {
|
|
let ch,
|
|
match,
|
|
max,
|
|
token,
|
|
pos = state.pos;
|
|
|
|
if (!state.md.options.html) {
|
|
return false;
|
|
}
|
|
|
|
// Check start
|
|
max = state.posMax;
|
|
if (state.src.charCodeAt(pos) !== 0x3c /* < */ || pos + 2 >= max) {
|
|
return false;
|
|
}
|
|
|
|
// Quick fail on second char
|
|
ch = state.src.charCodeAt(pos + 1);
|
|
if (
|
|
ch !== 0x21 /* ! */ &&
|
|
ch !== 0x3f /* ? */ &&
|
|
ch !== 0x2f /* / */ &&
|
|
!isLetter(ch)
|
|
) {
|
|
return false;
|
|
}
|
|
|
|
match = state.src.slice(pos).match(HTML_TAG_RE);
|
|
|
|
if (!match) {
|
|
return false;
|
|
}
|
|
|
|
if (!silent) {
|
|
token = state.push("html_inline", "", 0);
|
|
|
|
token.content = match[0];
|
|
|
|
if (isLinkOpen(token.content)) {
|
|
state.linkLevel++;
|
|
}
|
|
if (isLinkClose(token.content)) {
|
|
state.linkLevel--;
|
|
}
|
|
}
|
|
state.pos += match[0].length;
|
|
return true;
|
|
}
|
|
|
|
export function setup(helper) {
|
|
helper.registerPlugin((md) => {
|
|
if (md.options.discourse.features["chat-html-inline"]) {
|
|
md.inline.ruler.push("chat-html-inline", chatHtmlInlineRule);
|
|
}
|
|
});
|
|
}
|