Changes
7 changed files (+308/-0)
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deno.lock (new)
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deno.lock.license (new)
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@@ -0,0 +1,3 @@SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com> SPDX-License-Identifier: CC0-1.0
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@@ -0,0 +1,5 @@// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com> // // SPDX-License-Identifier: Apache-2.0 export * from "https://deno.land/std@0.221.0/assert/mod.ts";
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@@ -0,0 +1,5 @@// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com> // // SPDX-License-Identifier: Apache-2.0 export * from "https://deno.land/std@0.221.0/path/mod.ts";
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@@ -0,0 +1,37 @@// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com> // // SPDX-License-Identifier: Apache-2.0 import { assertEquals, assertExists, assertObjectMatch, } from "../../deps/deno.land/std/assert/mod.ts"; import { DenoFsReader } from "./deno_fs.ts"; import type { DirectoryReader } from "./interface.ts"; Deno.test("Should read file tree", async () => { const reader = new DenoFsReader(new URL("../", import.meta.url)); const root = await reader.getRootDirectory(); const rootEntries = await root.read(); assertEquals(rootEntries.length, 1); assertObjectMatch(rootEntries[0], { type: "directory", name: "filesystem_reader", }); const thisDirectory = rootEntries[0] as DirectoryReader; const thisDirectoryContents = await thisDirectory.read(); const thisFile = thisDirectoryContents.find((entry) => entry.name === "deno_fs.test.ts" ); assertExists(thisFile); assertEquals(thisFile.type, "file"); assertEquals(thisFile.name, "deno_fs.test.ts"); assertEquals(thisFile.path, ["filesystem_reader", "deno_fs.test.ts"]); assertEquals(thisFile.parent, thisDirectory); });
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@@ -0,0 +1,110 @@// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com> // // SPDX-License-Identifier: Apache-2.0 import { SEPARATOR } from "../../deps/deno.land/std/path/mod.ts"; import type { DirectoryReader, FileReader, FileSystemReader, RootDirectoryReader, } from "./interface.ts"; export class DenoFsReader implements FileSystemReader { #root: string; constructor(rootDirectory: string | URL) { this.#root = typeof rootDirectory === "string" ? rootDirectory : rootDirectory.pathname; // Append trailing slash for easy path resolving if (!(/[\\/]$/.test(this.#root))) { this.#root += SEPARATOR; } } #resolve = (path: readonly string[]): string => { let normalized: string[] = []; for (const segment of path) { switch (segment) { case ".": break; case "..": // TODO: Abort for above the root traversal. normalized = normalized.slice(0, -1); break; default: normalized.push(segment); break; } } return this.#root + normalized.join(SEPARATOR); }; #fromDirEntry = ( dirEntry: Deno.DirEntry, parent: DirectoryReader | RootDirectoryReader, ): FileReader | DirectoryReader => { const { name, isSymlink, isFile } = dirEntry; const path = parent.type === "root" ? [name] : [...parent.path, name]; if (isSymlink) { // TODO: Log warning and skip. throw new Error("DenoFsReader does not support reading symlinks."); } if (isFile) { return { type: "file", name, path, parent, read: () => { return Deno.readFile(this.#resolve(path)); }, }; } const dir: DirectoryReader = { type: "directory", name, path, parent, read: async () => { const converted: Array<FileReader | DirectoryReader> = []; for await (const entry of Deno.readDir(this.#resolve(path))) { converted.push(this.#fromDirEntry(entry, dir)); } return converted; }, }; return dir; }; async getRootDirectory(): Promise<RootDirectoryReader> { await Deno.permissions.request({ name: "read", path: this.#root }); const root: RootDirectoryReader = { type: "root", read: async () => { const converted: Array<FileReader | DirectoryReader> = []; for await (const entry of Deno.readDir(this.#root)) { converted.push(this.#fromDirEntry(entry, root)); } return converted; }, }; return root; } }
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@@ -0,0 +1,34 @@// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com> // // SPDX-License-Identifier: Apache-2.0 export interface FileReader { readonly type: "file"; readonly name: string; readonly path: readonly string[]; readonly parent: DirectoryReader | RootDirectoryReader; read(): Promise<Uint8Array>; } export interface DirectoryReader { readonly type: "directory"; readonly name: string; readonly path: readonly string[]; readonly parent: DirectoryReader | RootDirectoryReader; read(): Promise<ReadonlyArray<FileReader | DirectoryReader>>; } export interface RootDirectoryReader { readonly type: "root"; read(): Promise<ReadonlyArray<FileReader | DirectoryReader>>; } export interface FileSystemReader { /** * Returns the topmost directory this FileSystem Reader can operate on. */ getRootDirectory(): Promise<RootDirectoryReader>; }
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