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Process multiple files and other tweaks #9

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Process multiple files and other tweaks #9

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a190eae
Process multiple files and other tweaks
danishalim Oct 3, 2020
5f781a6
Fixed options parsing issue
danishalim Oct 4, 2020
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131 changes: 80 additions & 51 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,81 +3,110 @@
const request = require("request");
const path = require("path");
const colors = require("colors");
const fs = require("fs");
const regex = /(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g
const fs = require("fs").promises;
const regex = /(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g;

// If the user doesn't enter any arguments/filenames, it exits the process
if (process.argv.length === 2) {
console.log("Usage: url-fi [argument(s)] [FILENAME]")
console.log("-v: print the tool name and its version")
console.log("-s: check whether http:// work using https://")
console.log("-h: display the usage of this tool")
process.exit(1)
console.log("Usage: url-fi [argument(s)] [FILENAME]");
console.log("-v: print the tool name and its version");
console.log("-s: check whether http:// work using https://");
console.log("-h: display the usage of this tool");
}

// for option -s, -h, and -v
// If user enter -s, the program checks whether http:// actually work using https://
// If user enter -h, the program prints out the usage of this tool
let sFlag = false;
let files = [];
for (let i = 2; i < process.argv.length; i++) {
let arg = process.argv[i];
if (arg.startsWith('-')) {
if (arg.includes("s")) {
sFlag = true;
}
let arg = process.argv[i];
if (arg.startsWith("-")) {
if (arg.includes("s")) {
sFlag = true;
}

if (arg.includes("h")) {
console.log("Usage: url-fi [FILENAME]");
}

if (arg.includes("h")) {
console.log("Usage: url-fi [FILENAME]")
}
if (arg.includes("v")) {
console.log("Tool Name: url-fi");
console.log("Version: 0.1");
}
}

if (checkFile(arg)) {
files.push(arg);
}
}

if (arg.includes("v")) {
console.log("Tool Name: url-fi")
console.log("Version: 0.1")
}
// Aggregates links from one or multiple files
async function readArgFile() {
try {
console.log(`${files.length} file/s found`);
let data;
for (let file of files) {
data += await fs.readFile(file, "utf8");
}
return data;
} catch (err) {
console.error(err);
}
}

// If the user enters any arguments/filenames, starts process.
// --version or -v: prints tool name & version
// filename: checks broken links
for (let i = 2; i < process.argv.length; i++) {
let arg = process.argv[i];
if (!arg.startsWith("-")) {
fs.readFile(path.normalize(arg), 'utf8', function (err, data) {
if (err) {
console.log(colors.red(err));
process.exit(1);
}
let links = data.match(regex);
for (let i = 0; i < links.length; i++) {
let link = links[i];
if (link.startsWith("https://")) {
checkUrl(link);
} else {
checkUrl(link);
if (sFlag) {
checkUrl(link.replace(/^http/, "https"));
}
}
}
})
async function sendHeadRequests(data) {
let links = data.match(regex);
console.log(`${links.length} links collected`);
for (let i = 0; i < links.length; i++) {
let link = links[i];
if (link.startsWith("https://")) {
checkUrl(link);
} else {
checkUrl(link);
if (sFlag) {
checkUrl(link.replace(/^http/, "https"));
}
}
}
}

// Main sequence
if (files.length > 0) {
readArgFile()
.then((data) => sendHeadRequests(data))
.catch((err) => {
console.error(err);
});
}

// Checks the link is broken or not
// - status code 200: good
// - status code 400, 404: broken
// - otherwise: unknown
function checkUrl(url) {
request({ method: 'HEAD', uri: url }, function (err, res, body) {
if (err) {
console.log(colors.yellow(`${err} ${url}`));
} else if (res.statusCode == 200) {
console.log(colors.green(`[PASSED] [200] ${url}`));
} else if (res.statusCode == 404 || res.statusCode == 400) {
console.log(colors.red(`[FAILED] [${res.statusCode}] ${url}`));
} else {
console.log(colors.grey(`[UNKNOWN] [${res.statusCode}] ${url}`))
}
})
request({ method: "HEAD", uri: url }, function (err, res, body) {
if (err) {
console.log(colors.yellow(`${err} ${url}`));
} else if (res.statusCode == 200) {
console.log(colors.green(`[PASSED] [200] ${url}`));
} else if (res.statusCode == 404 || res.statusCode == 400) {
console.log(colors.red(`[FAILED] [${res.statusCode}] ${url}`));
} else {
console.log(colors.grey(`[UNKNOWN] [${res.statusCode}] ${url}`));
}
});
}

// Checks if argument provided is a file
async function checkFile(arg) {
try {
const stat = await fs.lstat(arg);
return stat.isFile();
} catch (err) {
console.error(err);
}
}