add parser to better handle args

README.md

@@ -44,17 +44,17 @@ $ pypy 10 💩
 💩
 ```
 
-Pypy will automatically copy the pyramid in your clipboard, unless the `--no-copy` option is specified.
+Pypy will automatically copy the pyramid to your clipboard, unless the `--no-copy` option is specified.
 
 ## Options
 
-### `--no-space`
+### `-s` `--no-space`
 
 No space between items
 
-### `--no-copy`
+### `-c` `--no-copy`
 
-Don't copy the pyramid in your clipboard
+Don't copy the pyramid to the clipboard
 
 ## Licence ##
 WTFPL License

index.js

@@ -1,26 +1,47 @@
 #!/usr/bin/env node
 
 const cp = require("copy-paste");
+const ArgumentParser = require("argparse").ArgumentParser;
+const {version} = require('./package.json');
 
-const params = process.argv;
-params.splice(0, 2);
-if (!params || params.length < 2) {
-  console.log('Usage: pypy 3 😎');
-  return;
-}
-
-const noSpace = params.includes('--no-space');
-const noCopy = params.includes('--no-copy');
-
-const generatePyramid = (size, emoji) => {
-  if (size < 2) {
-    console.log("Pyramid can't be smaller than 2 emojis");
-    return;
+const parser = new ArgumentParser({
+  version,
+  addHelp: true,
+  description: 'Generate pyramids'
+});
+parser.addArgument(
+  'size',
+  { 
+    type: 'int',
+    help: 'Size of the pyramid',
+  })
+parser.addArgument(
+  'emoji',
+  {
+    help: 'emoji/text to be displayed inside the pyramid',
+  })
+parser.addArgument(
+  [ '-s', '--no-space' ],
+  {
+    default: false,
+    nargs: 0,
+    help: 'Remove space between emojis',
+    dest: 'noSpace',
   }
-  if (isNaN(Number(size))){
-    console.log("Size must be a number");
-    return;
+);
+parser.addArgument(
+  [ '-c', '--no-copy' ],
+  {
+    default: false,
+    nargs: 0,
+    help: "Disable copying the pyramid to the clipboard",
+    dest: 'noCopy'
   }
+);
+
+const args = parser.parseArgs();
+
+const generatePyramid = ({size, emoji, noSpace, noCopy}) => {
   const result = [];
   for (let i = 1; i < size * 2; i++) {
     let n = i > size ? size * 2 - i : i;
@@ -32,4 +53,4 @@ const generatePyramid = (size, emoji) => {
   }
 };
 
-generatePyramid(...params);
+generatePyramid(args);

package.json

@@ -17,6 +17,7 @@
     "pypy": "./index.js"
   },
   "dependencies": {
+    "argparse": "^1.0.10",
     "copy-paste": "^1.3.0"
   }
 }

yarn.lock

@@ -2,6 +2,12 @@
 # yarn lockfile v1
 
 
+argparse@^1.0.10:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
+  dependencies:
+    sprintf-js "~1.0.2"
+
 copy-paste@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/copy-paste/-/copy-paste-1.3.0.tgz#a7e6c4a1c28fdedf2b081e72b97df2ef95f471ed"
@@ -20,6 +26,10 @@ iconv-lite@^0.4.8:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
 
+sprintf-js@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+
 sync-exec@~0.6.x:
   version "0.6.2"
   resolved "https://registry.yarnpkg.com/sync-exec/-/sync-exec-0.6.2.tgz#717d22cc53f0ce1def5594362f3a89a2ebb91105"