Glasgow | 25-SDC-NOV | Katarzyna Kazimierczuk | Sprint 3 | Implement Shell Tools

implement-shell-tools/cat/index.js

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+import { readFileSync } from "node:fs";
+
+function cleanInput(listOfFiles) {
+	let cleanLinesArr = [];
+
+	for (const file of listOfFiles) {
+		const grabbedText = readFileSync(file, "utf-8");
+		const splitLines = grabbedText.split("\n");
+		cleanLinesArr.push(...splitLines);
+	}
+	return cleanLinesArr;
+}
+
+const args = process.argv.slice(2);
+let flag;
+let restIsFiles;
+
+if (args[0] && args[0][0] === "-") {
+	flag = args[0];
+	restIsFiles = args.slice(1);
+} else {
+	flag = null;
+	restIsFiles = args;
+}
+
+function takeSpecifiedAction(cleanLinesArr, flag) {
+	let countingOnlyFullLines = 1;
+
+	for (const file of cleanLinesArr) {
+		// Task: We recommend you start off supporting no flags, then add support for `-n`, then add support for `-b`.
+		if (!flag) {
+			console.log(file);
+		} else if (flag === "-n") {
+			console.log(`${countingOnlyFullLines} ${file}`);
+			countingOnlyFullLines += 1;
+		} else if (flag === "-b") {
+			if (file === "") {
+				console.log("");
+			} else {
+				console.log(`${countingOnlyFullLines} ${file}`);
+				countingOnlyFullLines += 1;
+			}
+		} else {
+			console.log("incorrect flag");
+		}
+	}
+}
+
+const lines = cleanInput(restIsFiles);
+takeSpecifiedAction(lines, flag);

implement-shell-tools/ls/index.js

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+import process from "node:process";
+import { promises as fs } from "node:fs";
+
+//  `ls -1`
+async function showAllFilesInDir(directory) {
+	const listOfFiles = await fs.readdir(directory);
+
+	for (const eachFile of listOfFiles) {
+		if (eachFile[0] !== ".") console.log(eachFile);
+	}
+}
+
+// `ls -1 sample-files`
+async function showVisibleInSampleFiles() {
+	const listOfFiles = await fs.readdir("sample-files");
+
+	for (const eachFile of listOfFiles) {
+		if (eachFile[0] !== ".") {
+			console.log(eachFile);
+		}
+	}
+}
+
+// `ls -1 -a sample-files`
+async function showAllInSampleFiles() {
+	const listOfFiles = await fs.readdir("sample-files");
+
+	for (const eachFile of listOfFiles) {
+		console.log(eachFile);
+	}
+}
+
+const argv = process.argv.slice(2);
+
+if (argv.includes("-a")) {
+	await showAllInSampleFiles();
+} else if (argv.includes("sample-files")) {
+	await showVisibleInSampleFiles();
+} else {
+	await showAllFilesInDir(".");
+}

implement-shell-tools/wc/index.js

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+import process from "node:process";
+import { promises as fs } from "node:fs";
+
+//from coursework
+// const content = await fs.readFile(path, "utf-8");
+// const countOfWordsContainingEs = content
+//   .split(" ")
+//   .filter((word) => word.includes("e"))
+//   .length;
+// console.log(countOfWordsContainingEs);
+
+function calculateCounts(inputFiles) {
+	return {
+		lines: inputFiles.split("\n").length - 1,
+		words: inputFiles.split(/\s+/).filter((w) => w !== "").length,
+		bytes: inputFiles.length,
+	};
+}
+
+// * `wc -l sample-files/3.txt`
+// * `wc -l sample-files/*`
+async function countLines(listOfFiles) {
+	for (const file of listOfFiles) {
+		const content = await fs.readFile(file, "utf-8");
+
+		// const linesNumbered = content.split('\n').length-1
+		const counts = calculateCounts(content);
+		console.log(`${counts.lines} ${file}`);
+	}
+}
+
+// * `wc -w sample-files/3.txt`
+async function countWords(listOfFiles) {
+	for (const file of listOfFiles) {
+		const content = await fs.readFile(file, "utf-8");
+
+		// const wordsCounted = content.split(" ").filter(word => word !== "").length;
+		// console.log(`${wordsCounted} ${file}`);
+		const counts = calculateCounts(content);
+		console.log(`${counts.words} ${file}`);
+	}
+}
+
+// * `wc -c sample-files/3.txt`
+async function countBytes(listOfFiles) {
+	for (const file of listOfFiles) {
+		const content = await fs.readFile(file, "utf-8");
+		// const bytesCounted = content.length;
+		const counts = calculateCounts(content);
+		console.log(`${counts.bytes} ${file}`);
+	}
+}
+
+// * `wc sample-files/*`
+async function countAll(listOfFiles) {
+	for (const file of listOfFiles) {
+		const content = await fs.readFile(file, "utf-8");
+		const counts = calculateCounts(content);
+		console.log(`${counts.lines} ${counts.words} ${counts.bytes} ${file}`);
+	}
+}
+
+const argv = process.argv.slice(2);
+const files = argv.filter((arg) => !arg.startsWith("-"));
+
+if (argv.includes("-l")) {
+	await countLines(files);
+} else if (argv.includes("-w")) {
+	await countWords(files);
+} else if (argv.includes("-c")) {
+	await countBytes(files);
+} else {
+	await countAll(files);
+}