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Diffstat (limited to 'std/path/common.ts')
-rw-r--r-- | std/path/common.ts | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/std/path/common.ts b/std/path/common.ts deleted file mode 100644 index 390c04f1d..000000000 --- a/std/path/common.ts +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license. -// This module is browser compatible. - -import { SEP } from "./separator.ts"; - -/** Determines the common path from a set of paths, using an optional separator, - * which defaults to the OS default separator. - * - * import { common } from "https://deno.land/std/path/mod.ts"; - * const p = common([ - * "./deno/std/path/mod.ts", - * "./deno/std/fs/mod.ts", - * ]); - * console.log(p); // "./deno/std/" - * - */ -export function common(paths: string[], sep = SEP): string { - const [first = "", ...remaining] = paths; - if (first === "" || remaining.length === 0) { - return first.substring(0, first.lastIndexOf(sep) + 1); - } - const parts = first.split(sep); - - let endOfPrefix = parts.length; - for (const path of remaining) { - const compare = path.split(sep); - for (let i = 0; i < endOfPrefix; i++) { - if (compare[i] !== parts[i]) { - endOfPrefix = i; - } - } - - if (endOfPrefix === 0) { - return ""; - } - } - const prefix = parts.slice(0, endOfPrefix).join(sep); - return prefix.endsWith(sep) ? prefix : `${prefix}${sep}`; -} |