chore: final review and cleanup of cat, ls and wc implementations

Author: AhmadHmedann

implement-shell-tools/ls/ls.mjs

@@ -1,6 +1,5 @@
 import { promises as fs } from "node:fs";
 import { program } from "commander";
-import { dirxml } from "node:console";
 
 program
   .name("ls ")

implement-shell-tools/wc/wc.mjs

@@ -6,7 +6,10 @@ program
   .name("wc")
   .description("wc implementation")
   .argument("<paths...>", "the file path to process")
-  .option("-l", "count how many lines");
+  .option("-l", "count  lines")
+  .option("-w", "count  words")
+  .option("-c", "count characters");
+
 program.parse();
 
 
@@ -17,13 +20,15 @@ if (paths.length === 0) {
   process.exit(1);
 }
 
-
 const options = program.opts();
+
 const total = {
   linesCounter: 0,
   wordsCounter: 0,
   characterCounter: 0,
 };
+
+
 try {
   for (const path of paths) {
     const content = await fs.readFile(path, "utf-8");
@@ -36,21 +41,30 @@ try {
     total.wordsCounter += wordsCounter;
     total.characterCounter += characterCounter;
 
-    if (options.l) {
-      console.log(`${linesCounter} ${path}`);
-    } else {
+    let results = [];
+    if (options.l) results.push(linesCounter);
+    if (options.w) results.push(wordsCounter);
+    if (options.c) results.push(characterCounter);
+
+    if (!options.l && !options.w && !options.c)
       console.log(
         ` ${linesCounter}  ${wordsCounter} ${characterCounter} ${path}`,
       );
+    else {
+      console.log(results.join(" ") + " " + path);
     }
   }
   if (paths.length > 1) {
-    if (options.l) {
-      console.log(`${total.linesCounter} total`);
-    } else {
+    if (!options.l && !options.w && !options.c) {
       console.log(
         ` ${total.linesCounter}  ${total.wordsCounter} ${total.characterCounter} total`,
       );
+    } else {
+      const totalWithFlags = [];
+      if (options.l) totalWithFlags.push(total.linesCounter);
+      if (options.w) totalWithFlags.push(total.wordsCounter);
+      if (options.c) totalWithFlags.push(total.characterCounter);
+      console.log(totalWithFlags.join(" ") + " total");
     }
   }
 } catch (error) {