OXYGENHUB

Coverage / src/refs.ts 84.7%

61 of 72 lines run, 6 of 6 functions, 25 of 27 branches · run #23 on main · run missed

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// `#N` and `@user` in text the user is typing (spec §6.2): what is being
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// completed at the cursor, and which reference a position sits on. No
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// vscode imports, so it is tested with plain Node.
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/** A reference being typed: `#12` (issue or proposal) or `@an` (a user). */


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export type Typing = { kind: "number"; prefix: string; start: number } | { kind: "user"; prefix: string; start: number };


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/**


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 * What the text before the cursor is in the middle of typing, if anything.


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 * A reference starts a word: after the line start, whitespace or an


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 * opening bracket, so `a#1` and `mail@host` are not references.


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 */


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export function typingAt(before: string): Typing | undefined {


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  const n = /(^|[\s([{])#(\d*)$/.exec(before);


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  if (n) {


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    return { kind: "number", prefix: n[2], start: before.length - n[2].length - 1 };


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  }


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  const u = /(^|[\s([{])@([A-Za-z0-9][A-Za-z0-9_-]*|)$/.exec(before);


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  if (u) {


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    return { kind: "user", prefix: u[2], start: before.length - u[2].length - 1 };


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  }


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  return undefined;


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}


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/** The `#N` reference covering `column` of `line`, with its span. */


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export function numberAt(line: string, column: number): { number: number; start: number; end: number } | undefined {


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  const re = /(^|[\s([{])#(\d+)\b/g;


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  for (let m = re.exec(line); m; m = re.exec(line)) {


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    const start = m.index + m[1].length;


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    const end = start + 1 + m[2].length;


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    if (column >= start && column <= end) {


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      return { number: Number(m[2]), start, end };


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    }


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  }


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  return undefined;


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}


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/** A repository root named by an SCM input box's URI query (`rootUri=file:///…`). */


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export function rootFromScmQuery(query: string): string | undefined {


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  const raw = new URLSearchParams(query).get("rootUri");


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  if (!raw) {


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    return undefined;


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  }


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  try {


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    return decodeURIComponent(new URL(raw).pathname);


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  } catch {


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    return undefined;


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  }


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}


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/** The note of a `TODO`/`FIXME`/`XXX`/`HACK` comment line, as an issue title. */


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export function todoTitle(line: string): string | undefined {


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  const m = /\b(TODO|FIXME|XXX|HACK)\b(?:\([^)]*\))?[:\s-]*(.*)$/.exec(line);


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  if (!m) {


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    return undefined;


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  }


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  const text = m[2].replace(/\s*(\*\/|-->|#\}|\*\)|;)\s*$/, "").trim();


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  return text ? text : `${m[1]} in the code`;


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}


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/** The TODO line with the new issue's number recorded: `TODO(#12): …`. */


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export function annotateTodo(line: string, number: number): string {


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  return line.replace(/\b(TODO|FIXME|XXX|HACK)\b(?!\()/, `$1(#${number})`);


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}


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/** An issue body quoting the code, with a permalink to it on the hub. */


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export function issueBody(opts: { permalink: string; path: string; startLine: number; endLine: number; language: string; code: string; pinned: boolean }): string {


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  const where = opts.startLine === opts.endLine ? `line ${opts.startLine}` : `lines ${opts.startLine}–${opts.endLine}`;


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  const fence = opts.code.includes("```") ? "~~~" : "```";


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  const note = opts.pinned ? "" : "\n\n_The link follows the bookmark, which has several heads, so the lines may move._";


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  return `From [\`${opts.path}\`, ${where}](${opts.permalink}):\n\n${fence}${opts.language}\n${opts.code.replace(/\n$/, "")}\n${fence}${note}\n`;


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}