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import { | ||
FileInfo, | ||
cwd, | ||
readDir, | ||
readDirSync, | ||
readlink, | ||
readlinkSync, | ||
stat, | ||
statSync | ||
} from "deno"; | ||
import { relative } from "path.ts"; | ||
|
||
export interface WalkOptions { | ||
maxDepth?: number; | ||
exts?: string[]; | ||
match?: RegExp[]; | ||
skip?: RegExp[]; | ||
// FIXME don't use `any` here? | ||
onError?: (err: any) => void; | ||
followSymlinks?: Boolean; | ||
} | ||
|
||
/** Generate all files in a directory recursively. | ||
* | ||
* for await (const fileInfo of walk()) { | ||
* console.log(fileInfo.path); | ||
* assert(fileInfo.isFile()); | ||
* }; | ||
*/ | ||
export async function* walk( | ||
dir: string = ".", | ||
options: WalkOptions = {} | ||
): AsyncIterableIterator<FileInfo> { | ||
options.maxDepth -= 1; | ||
let ls: FileInfo[] = []; | ||
try { | ||
ls = await readDir(dir); | ||
} catch (err) { | ||
if (options.onError) { | ||
options.onError(err); | ||
} | ||
} | ||
for (let f of ls) { | ||
if (f.isSymlink()) { | ||
if (options.followSymlinks) { | ||
f = await resolve(f); | ||
} else { | ||
continue; | ||
} | ||
} | ||
if (f.isFile()) { | ||
if (include(f, options)) { | ||
yield f; | ||
} | ||
} else { | ||
if (!(options.maxDepth < 0)) { | ||
yield* walk(f.path, options); | ||
} | ||
} | ||
} | ||
} | ||
|
||
/** Generate all files in a directory recursively. | ||
* | ||
* for (const fileInfo of walkSync()) { | ||
* console.log(fileInfo.path); | ||
* assert(fileInfo.isFile()); | ||
* }; | ||
*/ | ||
export function* walkSync( | ||
dir: string = ".", | ||
options: WalkOptions = {} | ||
): IterableIterator<FileInfo> { | ||
options.maxDepth -= 1; | ||
let ls: FileInfo[] = []; | ||
try { | ||
ls = readDirSync(dir); | ||
} catch (err) { | ||
if (options.onError) { | ||
options.onError(err); | ||
} | ||
} | ||
for (let f of ls) { | ||
if (f.isSymlink()) { | ||
if (options.followSymlinks) { | ||
f = resolveSync(f); | ||
} else { | ||
continue; | ||
} | ||
} | ||
if (f.isFile()) { | ||
if (include(f, options)) { | ||
yield f; | ||
} | ||
} else { | ||
if (!(options.maxDepth < 0)) { | ||
yield* walkSync(f.path, options); | ||
} | ||
} | ||
} | ||
} | ||
|
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function include(f: FileInfo, options: WalkOptions): Boolean { | ||
if (options.exts && !options.exts.some(ext => f.path.endsWith(ext))) { | ||
return false; | ||
} | ||
if (options.match && !options.match.some(pattern => pattern.test(f.path))) { | ||
return false; | ||
} | ||
if (options.skip && options.skip.some(pattern => pattern.test(f.path))) { | ||
return false; | ||
} | ||
return true; | ||
} | ||
|
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async function resolve(f: FileInfo): Promise<FileInfo> { | ||
// This is the full path, unfortunately if we were to make it relative | ||
// it could resolve to a symlink and cause an infinite loop. | ||
const fpath = await readlink(f.path); | ||
f = await stat(fpath); | ||
// workaround path not being returned by stat | ||
f.path = fpath; | ||
return f; | ||
} | ||
|
||
function resolveSync(f: FileInfo): FileInfo { | ||
// This is the full path, unfortunately if we were to make it relative | ||
// it could resolve to a symlink and cause an infinite loop. | ||
const fpath = readlinkSync(f.path); | ||
f = statSync(fpath); | ||
// workaround path not being returned by stat | ||
f.path = fpath; | ||
return f; | ||
} |
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