Move everything into std subdir

7 files changed, 274 insertions, 0 deletions

diff --git a/std/examples/README.md b/std/examples/README.md
new file mode 100644
index 000000000..e6102a843
--- /dev/null
+++ b/std/examples/README.md
@@ -0,0 +1,47 @@
+# Deno example programs
+
+This module contains small scripts that demonstrate use of Deno and its standard
+module.
+
+You can run these examples using just their URL or install the example as an
+executable script which references the URL. (Think of installing as creating a
+bookmark to a program.)
+
+### A TCP echo server
+
+```shell
+deno https://deno.land/std/examples/echo_server.ts --allow-net
+```
+
+Or
+
+```shell
+deno install echo_server https://deno.land/std/examples/echo_server.ts --allow-net
+```
+
+### cat - print file to standard output
+
+```shell
+deno install deno_cat https://deno.land/std/examples/cat.ts --allow-read
+deno_cat file.txt
+```
+
+### catj - print flattened JSON to standard output
+
+A very useful command by Soheil Rashidi ported to Deno.
+
+```shell
+deno install catj https://deno.land/std/examples/catj.ts --allow-read
+catj example.json
+catj file1.json file2.json
+echo example.json | catj -
+```
+
+### gist - easily create and upload Gists
+
+```
+export GIST_TOKEN=ABC # Generate at https://github.com/settings/tokens
+deno install gist https://deno.land/std/examples/gist.ts --allow-net --allow-env
+gist --title "Example gist 1" script.ts
+gist --t "Example gist 2" script2.ts
+```
diff --git a/std/examples/cat.ts b/std/examples/cat.ts
new file mode 100644
index 000000000..3626e3c29
--- /dev/null
+++ b/std/examples/cat.ts
@@ -0,0 +1,10 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+async function cat(filenames: string[]): Promise<void> {
+  for (const filename of filenames) {
+    const file = await Deno.open(filename);
+    await Deno.copy(Deno.stdout, file);
+    file.close();
+  }
+}
+
+cat(Deno.args.slice(1));
diff --git a/std/examples/catj.ts b/std/examples/catj.ts
new file mode 100644
index 000000000..cbe06d4b8
--- /dev/null
+++ b/std/examples/catj.ts
@@ -0,0 +1,110 @@
+#!/usr/bin/env -S deno --allow-read
+// Ported from: https://github.com/soheilpro/catj
+// Copyright (c) 2014 Soheil Rashidi
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+
+// Install using `deno install`
+// $ deno install catj https://deno.land/std/examples/catj.ts --allow-read
+
+/* eslint-disable @typescript-eslint/no-use-before-define */
+import { parse } from "../flags/mod.ts";
+import * as colors from "../fmt/colors.ts";
+
+const decoder = new TextDecoder();
+
+function isObject(arg): arg is object {
+  return !!arg && arg.constructor === Object;
+}
+
+function isValidIdentifier(value: string): boolean {
+  // eslint-disable-next-line max-len
+  return 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+    value
+  );
+}
+
+function printValue(value: unknown, path: string): void {
+  if (typeof value === "string") {
+    value = colors.green('"' + value + '"');
+  } else if (typeof value === "number") {
+    value = value.toString();
+  } else if (typeof value === "boolean") {
+    value = colors.yellow(value.toString());
+  }
+
+  console.log(path + " = " + value);
+}
+
+function printObject(obj: object, path: string): void {
+  for (const key of Object.keys(obj)) {
+    const value = obj[key];
+    let nodePath = path + colors.cyan(".") + key;
+
+    if (!isValidIdentifier(key)) {
+      nodePath = (path ? path : colors.cyan(".")) + '["' + key + '"]';
+    }
+
+    if (Array.isArray(value)) {
+      printArray(value, nodePath);
+    } else if (isObject(value)) {
+      printObject(value, nodePath);
+    } else {
+      printValue(value, nodePath);
+    }
+  }
+}
+
+function printArray(array: unknown[], path: string): void {
+  for (const index in array) {
+    const value = array[index];
+    const nodePath =
+      (path ? path : colors.cyan(".")) + "[" + colors.cyan(index) + "]";
+
+    if (Array.isArray(value)) {
+      printArray(value, nodePath);
+    } else if (isObject(value)) {
+      printObject(value as object, nodePath);
+    } else {
+      printValue(value, nodePath);
+    }
+  }
+}
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+function print(data: any): void {
+  if (Array.isArray(data)) {
+    printArray(data, "");
+  } else {
+    printObject(data, "");
+  }
+}
+
+async function main(): Promise<void> {
+  const parsedArgs = parse(Deno.args.slice(1));
+
+  if (parsedArgs.h || parsedArgs.help || parsedArgs._.length === 0) {
+    console.log("Usage: catj [-h|--help] [file...]");
+    console.log();
+    console.log("Examples:");
+    console.log();
+    console.log("// print file:\n   catj file.json");
+    console.log();
+    console.log("// print multiple files:\n   catj file1.json file2.json");
+    console.log();
+    console.log("// print from stdin:\n   cat file.json | catj -");
+  }
+
+  if (parsedArgs._[0] === "-") {
+    const contents = await Deno.readAll(Deno.stdin);
+    const json = JSON.parse(decoder.decode(contents));
+    print(json);
+  } else {
+    for (const fileName of parsedArgs._) {
+      const fileContents = await Deno.readFile(fileName);
+      const json = JSON.parse(decoder.decode(fileContents));
+      print(json);
+    }
+  }
+}
+
+main();
diff --git a/std/examples/colors.ts b/std/examples/colors.ts
new file mode 100644
index 000000000..6f03355c6
--- /dev/null
+++ b/std/examples/colors.ts
@@ -0,0 +1,4 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { bgBlue, red, bold, italic } from "../fmt/colors.ts";
+
+console.log(bgBlue(italic(red(bold("Hello world!")))));
diff --git a/std/examples/echo_server.ts b/std/examples/echo_server.ts
new file mode 100644
index 000000000..3bed1bca2
--- /dev/null
+++ b/std/examples/echo_server.ts
@@ -0,0 +1,9 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+const hostname = "0.0.0.0";
+const port = 8080;
+const listener = Deno.listen({ hostname, port });
+console.log(`Listening on ${hostname}:${port}`);
+while (true) {
+  const conn = await listener.accept();
+  Deno.copy(conn, conn);
+}
diff --git a/std/examples/gist.ts b/std/examples/gist.ts
new file mode 100755
index 000000000..890d85099
--- /dev/null
+++ b/std/examples/gist.ts
@@ -0,0 +1,65 @@
+#!/usr/bin/env -S deno --allow-net --allow-env
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+
+const { args, env, exit, readFile } = Deno;
+import { parse } from "https://deno.land/std/flags/mod.ts";
+
+function pathBase(p: string): string {
+  const parts = p.split("/");
+  return parts[parts.length - 1];
+}
+
+async function main(): Promise<void> {
+  const token = env()["GIST_TOKEN"];
+  if (!token) {
+    console.error("GIST_TOKEN environmental variable not set.");
+    console.error("Get a token here: https://github.com/settings/tokens");
+    exit(1);
+  }
+
+  const parsedArgs = parse(args.slice(1));
+
+  if (parsedArgs._.length === 0) {
+    console.error(
+      "Usage: gist.ts --allow-env --allow-net [-t|--title Example] some_file " +
+        "[next_file]"
+    );
+    exit(1);
+  }
+
+  const files = {};
+  for (const filename of parsedArgs._) {
+    const base = pathBase(filename);
+    const content = await readFile(filename);
+    const contentStr = new TextDecoder().decode(content);
+    files[base] = { content: contentStr };
+  }
+
+  const content = {
+    description: parsedArgs.title || parsedArgs.t || "Example",
+    public: false,
+    files: files
+  };
+  const body = JSON.stringify(content);
+
+  const res = await fetch("https://api.github.com/gists", {
+    method: "POST",
+    headers: [
+      ["Content-Type", "application/json"],
+      ["User-Agent", "Deno-Gist"],
+      ["Authorization", `token ${token}`]
+    ],
+    body
+  });
+
+  if (res.ok) {
+    const resObj = await res.json();
+    console.log("Success");
+    console.log(resObj["html_url"]);
+  } else {
+    const err = await res.text();
+    console.error("Failure to POST", err);
+  }
+}
+
+main();
diff --git a/std/examples/test.ts b/std/examples/test.ts
new file mode 100644
index 000000000..9887b1267
--- /dev/null
+++ b/std/examples/test.ts
@@ -0,0 +1,29 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+const { run } = Deno;
+import { test } from "../testing/mod.ts";
+import { assertEquals } from "../testing/asserts.ts";
+
+/** Example of how to do basic tests */
+test(function t1(): void {
+  assertEquals("hello", "hello");
+});
+
+test(function t2(): void {
+  assertEquals("world", "world");
+});
+
+/** A more complicated test that runs a subprocess. */
+test(async function catSmoke(): Promise<void> {
+  const p = run({
+    args: [
+      Deno.execPath(),
+      "run",
+      "--allow-read",
+      "examples/cat.ts",
+      "README.md"
+    ],
+    stdout: "piped"
+  });
+  const s = await p.status();
+  assertEquals(s.code, 0);
+});