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https://github.com/denoland/deno.git
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feat(std/path): Align globToRegExp() with bash glob expansion (#7209)
- feat: Support escaping glob characters - feat: Support more character classes - feat: Match characters literally on segment parse failure - fix: Match nothing for empty globs - fix: Contain any glob syntax to its path segment - perf: Remove extraneous separators from generated regex - doc: Add detailed JSDoc - chore: Remove old copyright headers
This commit is contained in:
Nayeem Rahman
GitHub
parent
b689e60b60
commit
326ccb1095
3 changed files with 367 additions and 240 deletions
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@ -60,11 +60,13 @@ function comparePath(a: WalkEntry, b: WalkEntry): number {
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return 0;
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}
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/**
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* Expand the glob string from the specified `root` directory and yield each
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/** Expand the glob string from the specified `root` directory and yield each
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* result as a `WalkEntry` object.
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*
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* Examples:
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* See [`globToRegExp()`](../path/glob.ts#globToRegExp) for details on supported
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* syntax.
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*
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* Example:
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*
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* for await (const file of expandGlob("**\/*.ts")) {
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* console.log(file);
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@ -168,10 +170,9 @@ export async function* expandGlob(
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yield* currentMatches;
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}
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/**
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* Synchronous version of `expandGlob()`.
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/** Synchronous version of `expandGlob()`.
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*
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* Examples:
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* Example:
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*
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* for (const file of expandGlobSync("**\/*.ts")) {
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* console.log(file);
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400
std/path/glob.ts
400
std/path/glob.ts
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@ -1,5 +1,3 @@
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// globToRegExp() is originall ported from globrex@0.1.2.
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// Copyright 2018 Terkel Gjervig Nielsen. All rights reserved. MIT license.
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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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// This module is browser compatible.
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@ -22,232 +20,296 @@ export interface GlobOptions {
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export type GlobToRegExpOptions = GlobOptions;
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/** Convert a glob string to a regular expressions.
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// deno-fmt-ignore
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const regExpEscapeChars = ["!", "$", "(", ")", "*", "+", ".", "=", "?", "[", "\\", "^", "{", "|"];
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const rangeEscapeChars = ["-", "\\", "]"];
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/** Convert a glob string to a regular expression.
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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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* Tries to match bash glob expansion as closely as possible.
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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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* extended: true,
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* globstar: true
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* })]
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* }); */
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* Basic glob syntax:
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* - `*` - Matches everything without leaving the path segment.
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* - `{foo,bar}` - Matches `foo` or `bar`.
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* - `[abcd]` - Matches `a`, `b`, `c` or `d`.
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* - `[a-d]` - Matches `a`, `b`, `c` or `d`.
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* - `[!abcd]` - Matches any single character besides `a`, `b`, `c` or `d`.
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* - `[[:<class>:]]` - Matches any character belonging to `<class>`.
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* - `[[:alnum:]]` - Matches any digit or letter.
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* - `[[:digit:]abc]` - Matches any digit, `a`, `b` or `c`.
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* - See https://facelessuser.github.io/wcmatch/glob/#posix-character-classes
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* for a complete list of supported character classes.
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* - `\` - Escapes the next character for an `os` other than `"windows"`.
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* - \` - Escapes the next character for `os` set to `"windows"`.
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* - `/` - Path separator.
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* - `\` - Additional path separator only for `os` set to `"windows"`.
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*
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* Extended syntax:
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* - Requires `{ extended: true }`.
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* - `?(foo|bar)` - Matches 0 or 1 instance of `{foo,bar}`.
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* - `@(foo|bar)` - Matches 1 instance of `{foo,bar}`. They behave the same.
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* - `*(foo|bar)` - Matches _n_ instances of `{foo,bar}`.
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* - `+(foo|bar)` - Matches _n > 0_ instances of `{foo,bar}`.
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* - `!(foo|bar)` - Matches anything other than `{foo,bar}`.
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* - See https://www.linuxjournal.com/content/bash-extended-globbing.
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*
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* Globstar syntax:
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* - Requires `{ globstar: true }`.
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* - `**` - Matches any number of any path segments.
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* - Must comprise its entire path segment in the provided glob.
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* - See https://www.linuxjournal.com/content/globstar-new-bash-globbing-option.
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*
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* Note the following properties:
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* - The generated `RegExp` is anchored at both start and end.
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* - Repeating and trailing separators are tolerated. Trailing separators in the
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* provided glob have no meaning and are discarded.
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* - Absolute globs will only match absolute paths, etc.
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* - Empty globs will match nothing.
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* - Any special glob syntax must be contained to one path segment. For example,
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* `?(foo|bar/baz)` is invalid. The separator will take precendence and the
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* first segment ends with an unclosed group.
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* - If a path segment ends with unclosed groups or a dangling escape prefix, a
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* parse error has occured. Every character for that segment is taken
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* literally in this event.
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*
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* Limitations:
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* - A negative group like `!(foo|bar)` will wrongly be converted to a negative
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* look-ahead followed by a wildcard. This means that `!(foo).js` will wrongly
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* fail to match `foobar.js`, even though `foobar` is not `foo`. Effectively,
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* `!(foo|bar)` is treated like `!(@(foo|bar)*)`. This will work correctly if
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* the group occurs not nested at the end of the segment. */
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export function globToRegExp(
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glob: string,
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{ extended = true, globstar: globstarOption = true, os = NATIVE_OS }:
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GlobToRegExpOptions = {},
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): RegExp {
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const sep = os == "windows" ? `(?:\\\\|\\/)+` : `\\/+`;
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const sepMaybe = os == "windows" ? `(?:\\\\|\\/)*` : `\\/*`;
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if (glob == "") {
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return /(?!)/;
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}
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const sep = os == "windows" ? "(?:\\\\|/)+" : "/+";
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const sepMaybe = os == "windows" ? "(?:\\\\|/)*" : "/*";
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const seps = os == "windows" ? ["\\", "/"] : ["/"];
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const sepRaw = os == "windows" ? `\\` : `/`;
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const globstar = os == "windows"
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? `(?:[^\\\\/]*(?:\\\\|\\/|$)+)*`
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: `(?:[^/]*(?:\\/|$)+)*`;
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const wildcard = os == "windows" ? `[^\\\\/]*` : `[^/]*`;
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// Keep track of scope for extended syntaxes.
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const extStack = [];
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// If we are doing extended matching, this boolean is true when we are inside
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// a group (eg {*.html,*.js}), and false otherwise.
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let inGroup = false;
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let inRange = false;
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let regExpString = "";
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? "(?:[^\\\\/]*(?:\\\\|/|$)+)*"
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: "(?:[^/]*(?:/|$)+)*";
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const wildcard = os == "windows" ? "[^\\\\/]*" : "[^/]*";
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const escapePrefix = os == "windows" ? "`" : "\\";
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// Remove trailing separators.
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let newLength = glob.length;
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for (; newLength > 0 && seps.includes(glob[newLength - 1]); newLength--);
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for (; newLength > 1 && seps.includes(glob[newLength - 1]); newLength--);
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glob = glob.slice(0, newLength);
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let c, n;
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for (let i = 0; i < glob.length; i++) {
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c = glob[i];
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n = glob[i + 1];
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let regExpString = "";
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if (seps.includes(c)) {
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regExpString += sep;
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while (seps.includes(glob[i + 1])) i++;
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// Terminates correctly. Trust that `j` is incremented every iteration.
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for (let j = 0; j < glob.length;) {
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let segment = "";
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const groupStack = [];
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let inRange = false;
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let inEscape = false;
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let endsWithSep = false;
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let i = j;
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// Terminates with `i` at the non-inclusive end of the current segment.
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for (; i < glob.length && !seps.includes(glob[i]); i++) {
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if (inEscape) {
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inEscape = false;
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const escapeChars = inRange ? rangeEscapeChars : regExpEscapeChars;
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segment += escapeChars.includes(glob[i]) ? `\\${glob[i]}` : glob[i];
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continue;
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}
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if (c == "[") {
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if (inRange && n == ":") {
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i++; // skip [
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let value = "";
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while (glob[++i] !== ":") value += glob[i];
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if (value == "alnum") regExpString += "\\w\\d";
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else if (value == "space") regExpString += "\\s";
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else if (value == "digit") regExpString += "\\d";
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i++; // skip last ]
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if (glob[i] == escapePrefix) {
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inEscape = true;
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continue;
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}
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if (glob[i] == "[") {
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if (!inRange) {
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inRange = true;
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regExpString += c;
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segment += "[";
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if (glob[i + 1] == "!") {
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i++;
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segment += "^";
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} else if (glob[i + 1] == "^") {
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i++;
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segment += "\\^";
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}
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continue;
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} else if (glob[i + 1] == ":") {
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let k = i + 1;
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let value = "";
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while (glob[k + 1] != null && glob[k + 1] != ":") {
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value += glob[k + 1];
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k++;
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}
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if (glob[k + 1] == ":" && glob[k + 2] == "]") {
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i = k + 2;
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if (value == "alnum") segment += "\\dA-Za-z";
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else if (value == "alpha") segment += "A-Za-z";
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else if (value == "ascii") segment += "\x00-\x7F";
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else if (value == "blank") segment += "\t ";
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else if (value == "cntrl") segment += "\x00-\x1F\x7F";
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else if (value == "digit") segment += "\\d";
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else if (value == "graph") segment += "\x21-\x7E";
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else if (value == "lower") segment += "a-z";
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else if (value == "print") segment += "\x20-\x7E";
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else if (value == "punct") {
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segment += "!\"#$%&'()*+,\\-./:;<=>?@[\\\\\\]^_‘{|}~";
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} else if (value == "space") segment += "\\s\v";
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else if (value == "upper") segment += "A-Z";
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else if (value == "word") segment += "\\w";
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else if (value == "xdigit") segment += "\\dA-Fa-f";
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continue;
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}
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}
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}
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if (c == "]") {
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if (glob[i] == "]" && inRange) {
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inRange = false;
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regExpString += c;
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segment += "]";
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continue;
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}
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if (c == "!") {
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if (inRange) {
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if (glob[i - 1] == "[") {
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regExpString += "^";
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if (glob[i] == "\\") {
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segment += `\\\\`;
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} else {
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segment += glob[i];
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}
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continue;
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}
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} else if (extended) {
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if (n == "(") {
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extStack.push(c);
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regExpString += "(?!";
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if (
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glob[i] == ")" && groupStack.length > 0 &&
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groupStack[groupStack.length - 1] != "BRACE"
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) {
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segment += ")";
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const type = groupStack.pop()!;
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if (type == "!") {
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segment += wildcard;
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} else if (type != "@") {
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segment += type;
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}
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continue;
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}
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if (
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glob[i] == "|" && groupStack.length > 0 &&
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groupStack[groupStack.length - 1] != "BRACE"
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) {
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segment += "|";
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continue;
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}
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if (glob[i] == "+" && extended && glob[i + 1] == "(") {
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i++;
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groupStack.push("+");
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segment += "(?:";
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continue;
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}
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regExpString += `\\${c}`;
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if (glob[i] == "@" && extended && glob[i + 1] == "(") {
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i++;
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groupStack.push("@");
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segment += "(?:";
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continue;
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}
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if (glob[i] == "?") {
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if (extended && glob[i + 1] == "(") {
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i++;
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groupStack.push("?");
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segment += "(?:";
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} else {
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regExpString += `\\${c}`;
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continue;
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segment += ".";
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}
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}
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if (inRange) {
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if (c == "\\" || c == "^" && glob[i - 1] == "[") regExpString += `\\${c}`;
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else regExpString += c;
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continue;
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}
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if (["\\", "$", "^", ".", "="].includes(c)) {
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regExpString += `\\${c}`;
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if (glob[i] == "!" && extended && glob[i + 1] == "(") {
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i++;
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groupStack.push("!");
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segment += "(?!";
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continue;
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}
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if (c == "(") {
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if (extStack.length) {
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regExpString += `${c}?:`;
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continue;
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}
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regExpString += `\\${c}`;
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if (glob[i] == "{") {
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groupStack.push("BRACE");
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segment += "(?:";
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continue;
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}
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if (c == ")") {
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if (extStack.length) {
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regExpString += c;
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const type = extStack.pop()!;
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if (type == "@") {
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regExpString += "{1}";
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} else if (type == "!") {
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regExpString += wildcard;
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if (glob[i] == "}" && groupStack[groupStack.length - 1] == "BRACE") {
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groupStack.pop();
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segment += ")";
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continue;
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}
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if (glob[i] == "," && groupStack[groupStack.length - 1] == "BRACE") {
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segment += "|";
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continue;
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}
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if (glob[i] == "*") {
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if (extended && glob[i + 1] == "(") {
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i++;
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groupStack.push("*");
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segment += "(?:";
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} else {
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regExpString += type;
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}
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continue;
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}
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regExpString += `\\${c}`;
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continue;
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}
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if (c == "|") {
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if (extStack.length) {
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regExpString += c;
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continue;
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}
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regExpString += `\\${c}`;
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continue;
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}
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if (c == "+") {
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if (n == "(" && extended) {
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extStack.push(c);
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continue;
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}
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regExpString += `\\${c}`;
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continue;
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}
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if (c == "@" && extended) {
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if (n == "(") {
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extStack.push(c);
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continue;
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}
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}
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if (c == "?") {
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if (extended) {
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if (n == "(") {
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extStack.push(c);
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}
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continue;
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} else {
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regExpString += ".";
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continue;
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}
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}
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if (c == "{") {
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inGroup = true;
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regExpString += "(?:";
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continue;
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}
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if (c == "}") {
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inGroup = false;
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regExpString += ")";
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continue;
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}
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if (c == ",") {
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if (inGroup) {
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regExpString += "|";
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continue;
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}
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regExpString += `\\${c}`;
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continue;
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}
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if (c == "*") {
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if (n == "(" && extended) {
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extStack.push(c);
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continue;
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}
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// Move over all consecutive "*"'s.
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// Also store the previous and next characters
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const prevChar = glob[i - 1];
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let starCount = 1;
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let numStars = 1;
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while (glob[i + 1] == "*") {
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starCount++;
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i++;
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numStars++;
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}
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const nextChar = glob[i + 1];
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const isGlobstar = globstarOption && starCount > 1 &&
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// from the start of the segment
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[sepRaw, "/", undefined].includes(prevChar) &&
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// to the end of the segment
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[sepRaw, "/", undefined].includes(nextChar);
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if (isGlobstar) {
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// it's a globstar, so match zero or more path segments
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regExpString += globstar;
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while (seps.includes(glob[i + 1])) i++;
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if (
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globstarOption && numStars == 2 &&
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[...seps, undefined].includes(prevChar) &&
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[...seps, undefined].includes(nextChar)
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) {
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segment += globstar;
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endsWithSep = true;
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} else {
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// it's not a globstar, so only match one path segment
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regExpString += wildcard;
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segment += wildcard;
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}
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}
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continue;
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}
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|
||||
regExpString += c;
|
||||
segment += regExpEscapeChars.includes(glob[i]) ? `\\${glob[i]}` : glob[i];
|
||||
}
|
||||
|
||||
regExpString = `^${regExpString}${regExpString != "" ? sepMaybe : ""}$`;
|
||||
// Check for unclosed groups or a dangling backslash.
|
||||
if (groupStack.length > 0 || inRange || inEscape) {
|
||||
// Parse failure. Take all characters from this segment literally.
|
||||
segment = "";
|
||||
for (const c of glob.slice(j, i)) {
|
||||
segment += regExpEscapeChars.includes(c) ? `\\${c}` : c;
|
||||
endsWithSep = false;
|
||||
}
|
||||
}
|
||||
|
||||
regExpString += segment;
|
||||
if (!endsWithSep) {
|
||||
regExpString += i < glob.length ? sep : sepMaybe;
|
||||
endsWithSep = true;
|
||||
}
|
||||
|
||||
// Terminates with `i` at the start of the next segment.
|
||||
while (seps.includes(glob[i])) i++;
|
||||
|
||||
// Check that the next value of `j` is indeed higher than the current value.
|
||||
if (!(i > j)) {
|
||||
throw new Error("Assertion failure: i > j (potential infinite loop)");
|
||||
}
|
||||
j = i;
|
||||
}
|
||||
|
||||
regExpString = `^${regExpString}$`;
|
||||
return new RegExp(regExpString);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -44,7 +44,14 @@ function match(
|
|||
Deno.test({
|
||||
name: "[path] globToRegExp() Basic RegExp",
|
||||
fn(): void {
|
||||
assertEquals(globToRegExp(""), /^$/);
|
||||
assertEquals(globToRegExp("*.js", { os: "linux" }), /^[^/]*\.js\/*$/);
|
||||
},
|
||||
});
|
||||
|
||||
Deno.test({
|
||||
name: "[path] globToRegExp() Empty glob",
|
||||
fn(): void {
|
||||
assertEquals(globToRegExp(""), /(?!)/);
|
||||
assertEquals(globToRegExp("*.js", { os: "linux" }), /^[^/]*\.js\/*$/);
|
||||
},
|
||||
});
|
||||
|
|
@ -108,27 +115,6 @@ Deno.test({
|
|||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
assert(
|
||||
match(
|
||||
"[[:digit:]]/bar.txt",
|
||||
"1/bar.txt",
|
||||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
assert(
|
||||
match(
|
||||
"[[:digit:]b]/bar.txt",
|
||||
"b/bar.txt",
|
||||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
assert(
|
||||
match(
|
||||
"[![:digit:]b]/bar.txt",
|
||||
"a/bar.txt",
|
||||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
assert(
|
||||
!match(
|
||||
"[[:alnum:]]/bar.txt",
|
||||
|
|
@ -136,20 +122,48 @@ Deno.test({
|
|||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
assert(
|
||||
!match(
|
||||
"[[:digit:]]/bar.txt",
|
||||
"a/bar.txt",
|
||||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
assert(
|
||||
!match(
|
||||
"[[:digit:]b]/bar.txt",
|
||||
"a/bar.txt",
|
||||
{ extended: false, globstar: false },
|
||||
),
|
||||
);
|
||||
for (const c of "09AGZagz") {
|
||||
assert(match("[[:alnum:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "AGZagz") {
|
||||
assert(match("[[:alpha:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "\x00\x20\x7F") {
|
||||
assert(match("[[:ascii:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "\t ") {
|
||||
assert(match("[[:blank:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "\x00\x1F\x7F") {
|
||||
assert(match("[[:cntrl:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "09") {
|
||||
assert(match("[[:digit:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "\x21\x7E") {
|
||||
assert(match("[[:graph:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "az") {
|
||||
assert(match("[[:lower:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "\x20\x7E") {
|
||||
assert(match("[[:print:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "!\"#$%&'()*+,-./:;<=>?@[\\]^_‘{|}~") {
|
||||
assert(match("[[:punct:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "\t\n\v\f\r ") {
|
||||
assert(match("[[:space:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "AZ") {
|
||||
assert(match("[[:upper:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "09AZaz_") {
|
||||
assert(match("[[:word:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
for (const c of "09AFaf") {
|
||||
assert(match("[[:xdigit:]]", c, { extended: false, globstar: false }), c);
|
||||
}
|
||||
},
|
||||
});
|
||||
|
||||
|
|
@ -367,8 +381,11 @@ Deno.test({
|
|||
name: "[path] globToRegExp() Special RegExp characters in range",
|
||||
fn(): void {
|
||||
// Excluding characters checked in the previous test.
|
||||
assertEquals(globToRegExp("[\\$^.=]", { os: "linux" }), /^[\\$^.=]\/*$/);
|
||||
assertEquals(globToRegExp("[!\\$^.=]", { os: "linux" }), /^[^\\$^.=]\/*$/);
|
||||
assertEquals(globToRegExp("[\\\\$^.=]", { os: "linux" }), /^[\\$^.=]\/*$/);
|
||||
assertEquals(
|
||||
globToRegExp("[!\\\\$^.=]", { os: "linux" }),
|
||||
/^[^\\$^.=]\/*$/,
|
||||
);
|
||||
assertEquals(globToRegExp("[^^]", { os: "linux" }), /^[\^^]\/*$/);
|
||||
},
|
||||
});
|
||||
|
|
@ -409,6 +426,53 @@ Deno.test({
|
|||
},
|
||||
});
|
||||
|
||||
Deno.test({
|
||||
name: "[path] globToRegExp() Unclosed groups",
|
||||
fn() {
|
||||
assert(match("{foo,bar}/[ab", "foo/[ab"));
|
||||
assert(match("{foo,bar}/{foo,bar", "foo/{foo,bar"));
|
||||
assert(match("{foo,bar}/?(foo|bar", "foo/?(foo|bar"));
|
||||
assert(match("{foo,bar}/@(foo|bar", "foo/@(foo|bar"));
|
||||
assert(match("{foo,bar}/*(foo|bar", "foo/*(foo|bar"));
|
||||
assert(match("{foo,bar}/+(foo|bar", "foo/+(foo|bar"));
|
||||
assert(match("{foo,bar}/!(foo|bar", "foo/!(foo|bar"));
|
||||
assert(match("{foo,bar}/?({)}", "foo/?({)}"));
|
||||
assert(match("{foo,bar}/{?(})", "foo/{?(})"));
|
||||
},
|
||||
});
|
||||
|
||||
Deno.test({
|
||||
name: "[path] globToRegExp() Escape glob characters",
|
||||
fn() {
|
||||
assert(match("\\[ab]", "[ab]", { os: "linux" }));
|
||||
assert(match("`[ab]", "[ab]", { os: "windows" }));
|
||||
assert(match("\\{foo,bar}", "{foo,bar}", { os: "linux" }));
|
||||
assert(match("`{foo,bar}", "{foo,bar}", { os: "windows" }));
|
||||
assert(match("\\?(foo|bar)", "?(foo|bar)", { os: "linux" }));
|
||||
assert(match("`?(foo|bar)", "?(foo|bar)", { os: "windows" }));
|
||||
assert(match("\\@(foo|bar)", "@(foo|bar)", { os: "linux" }));
|
||||
assert(match("`@(foo|bar)", "@(foo|bar)", { os: "windows" }));
|
||||
assert(match("\\*(foo|bar)", "*(foo|bar)", { os: "linux" }));
|
||||
assert(match("`*(foo|bar)", "*(foo|bar)", { os: "windows" }));
|
||||
assert(match("\\+(foo|bar)", "+(foo|bar)", { os: "linux" }));
|
||||
assert(match("`+(foo|bar)", "+(foo|bar)", { os: "windows" }));
|
||||
assert(match("\\!(foo|bar)", "!(foo|bar)", { os: "linux" }));
|
||||
assert(match("`!(foo|bar)", "!(foo|bar)", { os: "windows" }));
|
||||
assert(match("@\\(foo|bar)", "@(foo|bar)", { os: "linux" }));
|
||||
assert(match("@`(foo|bar)", "@(foo|bar)", { os: "windows" }));
|
||||
assert(match("{foo,bar}/[ab]\\", "foo/[ab]\\", { os: "linux" }));
|
||||
assert(match("{foo,bar}/[ab]`", "foo/[ab]`", { os: "windows" }));
|
||||
},
|
||||
});
|
||||
|
||||
Deno.test({
|
||||
name: "[path] globToRegExp() Dangling escape prefix",
|
||||
fn() {
|
||||
assert(match("{foo,bar}/[ab]\\", "foo/[ab]\\", { os: "linux" }));
|
||||
assert(match("{foo,bar}/[ab]`", "foo/[ab]`", { os: "windows" }));
|
||||
},
|
||||
});
|
||||
|
||||
Deno.test({
|
||||
name: "[path] GlobToRegExpOptions::extended",
|
||||
fn() {
|
||||
|
|
|
|||
Loading…
Reference in a new issue