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Try to infer lang from name hint in web ui

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This commit is contained in:
Edward Shen 2022-01-15 23:49:51 -08:00
parent ca71815d22
commit 6337642b3c
Signed by: edward
GPG key ID: 19182661E818369F
1 changed files with 36 additions and 5 deletions
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41
web/src/main.ts
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@ -106,13 +106,44 @@ function createStringPasteUi(data, mimeType: string, name?: string, lang?: strin
mainEle.appendChild(preEle);
bodyEle.appendChild(mainEle);
let languages = undefined;
if (!hljs.getLanguage(lang)) {
console.warn(`[js] User provided language (${lang}) is not known. Ignoring.`);
console.warn(`[js] User provided language (${lang}) is not known.`);
} else {
console.log(`[js] Selecting user provided language ${lang} for highlighting.`);
hljs.configure({
languages: [lang],
});
languages = [lang];
}
// If a language wasn't provided, see if we can use the file extension to give
// us a better hint for hljs
if (!languages) {
if (name) {
console.log("[js] Trying to infer from file name...");
const periodIndex = name.indexOf(".");
if (periodIndex === -1) {
console.warn("[js] Did not find file extension.")
} else {
let extension = name.slice(periodIndex + 1);
console.info(`[js] Found extension ${extension}.`);
if (!hljs.getLanguage(extension)) {
console.warn(`[js] Extension was not recognized by hljs. Giving up.`);
} else {
console.info("[js] Successfully inferred language from file extension.");
languages = [extension];
}
}
} else {
console.log("[js] No file name hint provided.");
}
} else {
console.info(`[js] Selecting user provided language ${languages[0]} for highlighting.`);
}
// If we still haven't set languages here, then we're leaving it up to the
if (!languages) {
console.log("[js] Deferring to hljs inference for syntax highlighting.");
} else {
hljs.configure({ languages });
}
hljs.highlightAll();