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denoland-deno/std/fs/_util.ts
2020-05-13 08:03:04 -04:00

42 lines
1 KiB
TypeScript

import * as path from "../path/mod.ts";
/**
* Test whether or not `dest` is a sub-directory of `src`
* @param src src file path
* @param dest dest file path
* @param sep path separator
*/
export function isSubdir(
src: string,
dest: string,
sep: string = path.sep
): boolean {
if (src === dest) {
return false;
}
const srcArray = src.split(sep);
const destArray = dest.split(sep);
// see: https://github.com/Microsoft/TypeScript/issues/30821
// @ts-ignore
return srcArray.reduce((acc: true, current: string, i: number): boolean => {
return acc && destArray[i] === current;
}, true);
}
export type PathType = "file" | "dir" | "symlink";
/**
* Get a human readable file type string.
*
* @param fileInfo A FileInfo describes a file and is returned by `stat`,
* `lstat`
*/
export function getFileInfoType(fileInfo: Deno.FileInfo): PathType | undefined {
return fileInfo.isFile
? "file"
: fileInfo.isDirectory
? "dir"
: fileInfo.isSymlink
? "symlink"
: undefined;
}