123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214
import { parse } from "https://deno.land/std@0.145.0/flags/mod.ts";import { bold, dim } from "https://deno.land/std@0.145.0/fmt/colors.ts";import { cache } from "./cache.ts";import { VERSION } from "./version.ts";
type DirEntry = {  type: string;  path: string;};
const denoPermissionFlags = [  "-A",  "--allow-all",  "--allow-env",  "--allow-ffi",  "--allow-hrtime",  "--allow-net",  "--allow-read",  "--allow-run",  "--allow-write",];
const supportedModuleExts = [  ".ts",  ".tsx",  ".mts",  ".js",  ".jsx",  ".mjs",];
async function main() {  const { _: args, ...options } = parse(    Deno.args.filter((a) => !denoPermissionFlags.includes(a)),  );  if (args.length == 0) {    console.log(bold("LAND"), VERSION);    console.log(dim("Homepage: "), "https://deno.land/x/land");    console.log(dim("Repo: "), "https://github.com/ije/land");    return;  }
  let [moduleName, version] = args.shift()!.toString().split("@");  const versionMetaUrl =    `https://cdn.deno.land/${moduleName}/meta/versions.json`;  const resp1 = await fetch(versionMetaUrl);  if (resp1.status === 404 || resp1.status === 403) {    console.error(`Module "${moduleName}" not found`);    Deno.exit(1);  }  if (resp1.status !== 200) {    console.error(resp1.statusText + ":", versionMetaUrl);    Deno.exit(1);  }
  const { latest, versions } = await resp1.json();  if (!version) {    version = latest;  } else if (!versions.includes(version)) {    const v = version;    if (v.startsWith("v")) {      version = v.slice(1);    } else {      version = "v" + v;    }    if (!versions.includes(version)) {      for (const ver of versions) {        if (ver.startsWith(v)) {          version = ver;          break;        } else if (v.startsWith("v") && ver.startsWith(v.slice(1))) {          version = ver;          break;        } else if (!v.startsWith("v") && ver.startsWith("v" + v)) {          version = ver;          break;        }      }    }    if (!versions.includes(version)) {      console.error(`Version "${v}" not found`);      Deno.exit(1);    }    if (version != v) {      console.log(dim(`Found version ${version}`));    }  }
  const { content } = await cache(    `https://cdn.deno.land/${moduleName}/versions/${version}/meta/meta.json`,  );  const { directory_listing } = JSON.parse(new TextDecoder().decode(content));
  let command: string | null = null;  let importMap: string | null = null;  for (    const name of ["cli", "main", "mod"].map((name) =>      supportedModuleExts.map((ext) => `${name}${ext}`)    ).flat()  ) {    if (      directory_listing.some((entry: DirEntry) =>        entry.type === "file" && entry.path === `/${name}`      )    ) {      command = name;      break;    }  }  for (    const filename of [      "import_map.json",      "import-map.json",      "importMap.json",      "importmap.json",    ]  ) {    if (      directory_listing.some((entry: DirEntry) =>        entry.type === "file" && entry.path === `/${filename}`      )    ) {      importMap = filename;      break;    }  }
  if (command === null) {    console.error(`No command entry file found in ${moduleName}`);    Deno.exit(1);  }
  const permissionFlags: string[] = [];  const denoFlags: string[] = [];  const appFlags: string[] = [];  for (const f of Deno.args) {    if (denoPermissionFlags.includes(f)) {      permissionFlags.push(f);    }  }  for (const key of Object.keys(options)) {    const value = options[key];    const flagKey = (key.length === 1 ? "-" : "--") + key;    if (flagKey === "--location" && typeof value === "string") {      try {        const url = new URL(value);        denoFlags.push(`--location=${url.toString()}`);      } catch (_e) {        // ignore      }    }    if (value && value !== true) {      appFlags.push(`${flagKey}=${value}`);    } else {      appFlags.push(flagKey);    }  }  if (permissionFlags.length === 0) {    const permissionsFile = directory_listing.find((entry: DirEntry) =>      entry.type === "file" &&      (entry.path === `/PERMISSIONS` || entry.path === `/PERMISSIONS.txt`)    );    if (permissionsFile) {      const { content } = await cache(        `https://cdn.deno.land/${moduleName}/versions/${version}/raw${permissionsFile.path}`,      );      const text = new TextDecoder().decode(content);      const list = text.split("\n").map((line) => {        const value = line.trim();        return denoPermissionFlags.find((p) =>          value === p || "--" + value === p        ) || "";      }).filter(Boolean);      permissionFlags.push(...list);      if (permissionFlags.length > 0) {        console.log(dim(`Land Permissions: ${list.join(" ")}`));      }    }  }  if (permissionFlags.length === 0) {    permissionFlags.push("--prompt");  }  if (!denoFlags.some((f) => f.startsWith("--location="))) {    denoFlags.push(`--location=http://0.0.0.0`);  }  if (importMap !== null) {    denoFlags.push(      `--import-map=https://deno.land/x/${moduleName}@${version}/${importMap}`,    );  }
  const cmd = Deno.run({    cmd: [      Deno.execPath(),      "run",      "--unstable",      ...denoFlags,      ...permissionFlags,      `https://deno.land/x/${moduleName}@${version}/${command}`,      ...args.map((a: string) => a.toString()),      ...appFlags,    ],    stdin: "inherit",    stdout: "inherit",    stderr: "inherit",  });  await cmd.status();  cmd.close();}
if (import.meta.main) {  main();}