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The previous usage of `reduce` was basically implementing the `every` A small difference is that the new implementation will stop checking as soon as one element have returned false, which will reduce the number of unnecessary checks.
38 lines
899 B
TypeScript
38 lines
899 B
TypeScript
import * as path from "../path/mod.ts";
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/**
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* Test whether or not `dest` is a sub-directory of `src`
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* @param src src file path
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* @param dest dest file path
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* @param sep path separator
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*/
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export function isSubdir(
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src: string,
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dest: string,
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sep: string = path.sep
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): boolean {
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if (src === dest) {
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return false;
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}
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const srcArray = src.split(sep);
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const destArray = dest.split(sep);
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return srcArray.every((current, i) => destArray[i] === current);
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}
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export type PathType = "file" | "dir" | "symlink";
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/**
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* Get a human readable file type string.
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*
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* @param fileInfo A FileInfo describes a file and is returned by `stat`,
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* `lstat`
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*/
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export function getFileInfoType(fileInfo: Deno.FileInfo): PathType | undefined {
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return fileInfo.isFile
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? "file"
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: fileInfo.isDirectory
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? "dir"
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: fileInfo.isSymlink
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? "symlink"
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: undefined;
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}
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