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128 lines
3.3 KiB
TypeScript
128 lines
3.3 KiB
TypeScript
// Loaded from https://raw.githubusercontent.com/denjucks/dex/master/lib/deps/path/glob.ts
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import { SEP, SEP_PATTERN } from "./separator.ts";
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import { globrex } from "./_globrex.ts";
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import { join, normalize } from "./mod.ts";
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import { assert } from "../testing/asserts.ts";
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export interface GlobOptions {
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extended?: boolean;
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globstar?: boolean;
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}
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export interface GlobToRegExpOptions extends GlobOptions {
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flags?: string;
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}
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/**
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* Generate a regex based on glob pattern and options
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* This was meant to be using the the `fs.walk` function
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* but can be used anywhere else.
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* Examples:
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*
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* Looking for all the `ts` files:
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* walkSync(".", {
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* match: [globToRegExp("*.ts")]
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* })
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*
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* Looking for all the `.json` files in any subfolder:
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* walkSync(".", {
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* match: [globToRegExp(join("a", "**", "*.json"),{
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* flags: "g",
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* extended: true,
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* globstar: true
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* })]
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* })
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*
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* @param glob - Glob pattern to be used
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* @param options - Specific options for the glob pattern
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* @returns A RegExp for the glob pattern
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*/
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export function globToRegExp(
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glob: string,
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{ extended = false, globstar = true }: GlobToRegExpOptions = {}
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): RegExp {
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const result = globrex(glob, {
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extended,
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globstar,
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strict: false,
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filepath: true,
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});
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assert(result.path != null);
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return result.path.regex;
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}
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/** Test whether the given string is a glob */
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export function isGlob(str: string): boolean {
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const chars: Record<string, string> = { "{": "}", "(": ")", "[": "]" };
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/* eslint-disable-next-line max-len */
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const regex = /\\(.)|(^!|\*|[\].+)]\?|\[[^\\\]]+\]|\{[^\\}]+\}|\(\?[:!=][^\\)]+\)|\([^|]+\|[^\\)]+\))/;
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if (str === "") {
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return false;
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}
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let match: RegExpExecArray | null;
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while ((match = regex.exec(str))) {
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if (match[2]) return true;
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let idx = match.index + match[0].length;
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// if an open bracket/brace/paren is escaped,
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// set the index to the next closing character
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const open = match[1];
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const close = open ? chars[open] : null;
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if (open && close) {
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const n = str.indexOf(close, idx);
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if (n !== -1) {
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idx = n + 1;
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}
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}
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str = str.slice(idx);
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}
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return false;
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}
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/** Like normalize(), but doesn't collapse "**\/.." when `globstar` is true. */
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export function normalizeGlob(
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glob: string,
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{ globstar = false }: GlobOptions = {}
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): string {
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if (!!glob.match(/\0/g)) {
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throw new Error(`Glob contains invalid characters: "${glob}"`);
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}
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if (!globstar) {
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return normalize(glob);
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}
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const s = SEP_PATTERN.source;
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const badParentPattern = new RegExp(
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`(?<=(${s}|^)\\*\\*${s})\\.\\.(?=${s}|$)`,
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"g"
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);
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return normalize(glob.replace(badParentPattern, "\0")).replace(/\0/g, "..");
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}
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/** Like join(), but doesn't collapse "**\/.." when `globstar` is true. */
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export function joinGlobs(
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globs: string[],
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{ extended = false, globstar = false }: GlobOptions = {}
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): string {
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if (!globstar || globs.length == 0) {
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return join(...globs);
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}
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if (globs.length === 0) return ".";
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let joined: string | undefined;
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for (const glob of globs) {
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const path = glob;
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if (path.length > 0) {
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if (!joined) joined = path;
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else joined += `${SEP}${path}`;
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}
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}
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if (!joined) return ".";
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return normalizeGlob(joined, { extended, globstar });
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}
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