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std/path/_common/basename.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import { assertPath } from "./assert_path.ts";
export function stripSuffix(name: string, suffix: string): string { if (suffix.length >= name.length) { return name; }
const lenDiff = name.length - suffix.length;
for (let i = suffix.length - 1; i >= 0; --i) { if (name.charCodeAt(lenDiff + i) !== suffix.charCodeAt(i)) { return name; } }
return name.slice(0, -suffix.length);}
export function lastPathSegment( path: string, isSep: (char: number) => boolean, start = 0,): string { let matchedNonSeparator = false; let end = path.length;
for (let i = path.length - 1; i >= start; --i) { if (isSep(path.charCodeAt(i))) { if (matchedNonSeparator) { start = i + 1; break; } } else if (!matchedNonSeparator) { matchedNonSeparator = true; end = i + 1; } }
return path.slice(start, end);}
export function assertArgs(path: string, suffix: string) { assertPath(path); if (path.length === 0) return path; if (typeof suffix !== "string") { throw new TypeError( `Suffix must be a string. Received ${JSON.stringify(suffix)}`, ); }}