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Use shorter regex in community link parser

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This commit is contained in:
Zetaphor 2023-06-22 15:33:45 -03:00
parent fc0c063426
commit 73147ae37c
2 changed files with 39 additions and 32 deletions
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2
src/shared/config.ts
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@ -33,6 +33,6 @@ export const emDash = "\u2014";
* /u/username@server.com
*/
export const instanceLinkRegex =
/(\/[c|m|u]\/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}|![a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,})/g;
/(\/[c|m|u]\/|!)[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/g;
export const testHost = "0.0.0.0:8536";

69
src/shared/markdown.ts
View file

@ -73,7 +73,7 @@ const html5EmbedConfig = {
},
};
function localCommunityLinkParser(md) {
function localCommunityLinkParser(md: MarkdownIt) {
md.core.ruler.push("replace-text", state => {
for (let i = 0; i < state.tokens.length; i++) {
if (state.tokens[i].type !== "inline") {
@ -83,42 +83,49 @@ function localCommunityLinkParser(md) {
for (let j = inlineTokens.length - 1; j >= 0; j--) {
if (
inlineTokens[j].type === "text" &&
instanceLinkRegex.test(inlineTokens[j].content)
new RegExp(instanceLinkRegex).test(inlineTokens[j].content)
) {
const textParts = inlineTokens[j].content.split(instanceLinkRegex);
const text = inlineTokens[j].content;
const matches = Array.from(text.matchAll(instanceLinkRegex));
let lastIndex = 0;
const newTokens: Token[] = [];
for (const part of textParts) {
let linkClass = "community-link";
if (instanceLinkRegex.test(part)) {
// Rewrite !community@server.com and KBin /m/community@server.com to local urls
let href;
if (part.startsWith("!")) {
href = "/c/" + part.substring(1);
} else if (part.startsWith("/m/")) {
href = "/c/" + part.substring(3);
} else {
href = part;
if (part.startsWith("/u/")) {
linkClass = "user-link";
}
}
const linkOpenToken = new state.Token("link_open", "a", 1);
linkOpenToken.attrs = [
["href", href],
["class", linkClass],
];
for (const match: RegExpMatchArray of matches) {
// If there is plain text before the match, add it as a separate token
if (match.index !== undefined && match.index > lastIndex) {
const textToken = new state.Token("text", "", 0);
textToken.content = part;
const linkCloseToken = new state.Token("link_close", "a", -1);
newTokens.push(linkOpenToken, textToken, linkCloseToken);
} else {
const textToken = new state.Token("text", "", 0);
textToken.content = part;
textToken.content = text.slice(lastIndex, match.index);
newTokens.push(textToken);
}
// Determine the new href
let href;
if (match[0].startsWith("!")) {
href = "/c/" + match[0].substring(1);
} else if (match[0].startsWith("/m/")) {
href = "/c/" + match[0].substring(3);
} else {
href = match[0];
}
const linkOpenToken = new state.Token("link_open", "a", 1);
linkOpenToken.attrs = [["href", href]];
const textToken = new state.Token("text", "", 0);
textToken.content = match[0];
const linkCloseToken = new state.Token("link_close", "a", -1);
newTokens.push(linkOpenToken, textToken, linkCloseToken);
lastIndex =
(match.index !== undefined ? match.index : 0) + match[0].length;
}
// If there is plain text after the last match, add it as a separate token
if (lastIndex < text.length) {
const textToken = new state.Token("text", "", 0);
textToken.content = text.slice(lastIndex);
newTokens.push(textToken);
}
// Replace the original token with the new tokens