Let's get jawkward, y'all

jawk.js

@@ -0,0 +1,54 @@
+#!/usr/bin/env node
+
+/**
+ * To Do features:
+ *   ✅ Emulate begin and end
+ *   ✅ Support different field separators
+ *   ✅ Handle basic print line use case
+ *   ✅ Add NR, NF
+ *   ✅ Add lib access like moment
+ *   ⬜️ Support '/regEx/ {}' skyntax
+ *   ⬜️ Support '/fromRegEx/,/toRegEx/ {}' skyntax
+ */
+
+const moment = require('moment')
+const readline = require('readline').createInterface({input:process.stdin})
+
+const argv = Object.assign({
+        fs: '\\s+'
+    }, require('minimist')(process.argv.slice(2)))
+const ctx = {}
+
+if (argv.begin) {
+    eval(`${argv.begin}`)
+}
+
+let lineHandlerParsed
+if (argv._.length >= 1) {
+    let src = argv._[argv._.length - 1]
+    src = src.replace(/\$(\d+)/ig, "__$[$1]")
+    lineHandlerParsed = eval(`
+        function lineHandler(__$, NR, NF, ctx, moment) {
+            return ( ${src} );
+        };
+        lineHandler
+    `)
+    argv.fs = new RegExp(argv.fs)
+    let NR = 0
+    readline.on('line', line => {
+        const __$ = [line, ...(line.split(argv.fs))]
+        const NF = __$.length
+        NR++
+        const result = lineHandlerParsed(__$, NR, NF, ctx, moment)
+        console.log(Array.isArray(result) ? result.join(' ') : result)
+    })
+}
+
+readline.on('close', () => {
+    if (argv.end) {
+        eval(`${argv.end}`)
+    }
+    if (argv.begin || argv.end) {
+        console.log(ctx)
+    }
+})

package.json

@@ -1,6 +1,6 @@
 {
   "name": "j5-scripts",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "description": "Johnny Marnell's scripts",
   "keywords": [
     "Johnny",
@@ -21,9 +21,12 @@
   },
   "type": "commonjs",
   "dependencies": {
-    "zx": "^5.0.0"
+    "zx": "^5.0.0",
+    "minimist": "^1.2.5",
+    "moment": "^2.29.1"
   },
   "bin": {
+    "jawk": "./jawk.js",
     "j5-ffmpeg": "./ffmpeg.mjs"
   },
   "bundleDependencies": [],