Marc
129 lines
4.0 KiB
JavaScript
129 lines
4.0 KiB
JavaScript
const fs = require('fs')
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let paths = []
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let options = []
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for(arg of process.argv.slice(3)){
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if(arg.startsWith('--')){
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options.push(arg)
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}
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else if(arg.startsWith('-')){
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for(let option of arg.slice(1)){
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options.push('-' + option);
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}
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}
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else{
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paths.push(arg)
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}
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}
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if(paths.length == 0){
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paths = ['.'];
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}
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try{
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listFiles(paths[0], options)
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}
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catch(e){
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switch(e.code){
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case "ENOENT":
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console.error(`path "${paths[0]}" does not exist`);
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break;
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default:
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console.error(`ls: ${e.code}`)
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}
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}
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function listFiles(path, options){
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const files = ['.', '..'].concat(fs.readdirSync(paths[0]))
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const nonHiddenFiles = files.filter(file => file[0] != '.')
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colorList = JSON.parse(process.env.ls_color)
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if(options.includes('-l')){
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console.log(`total ${options.includes('-a') ? files.length : nonHiddenFiles.length}`)
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for(let file of options.includes('-a') ? files : nonHiddenFiles){
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stats = fs.lstatSync(`${path}/${file}`);
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mode = stats.mode
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result = ""
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let color = []
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let defaultColor = "\x1b[0m"
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let fileType = "-"
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if(stats.isFile()){
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fileType = "-";
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if(stats.mode & 00100){ //owner can execute
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color = colorList.ex ? `\x1b[${colorList.ex[0]}m\x1b[${colorList.ex[1]}m` : "\x1b[0m"
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}
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}
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else if (stats.isDirectory()) {
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fileType = "d";
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color = colorList.di ? `\x1b[${colorList.di[0]}m\x1b[${colorList.di[1]}m` : "\x1b[0m"
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}
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else if (stats.isSymbolicLink()){
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fileType = "l"
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color = colorList.ln ? `\x1b[${colorList.ln[0]}m\x1b[${colorList.ln[1]}m` : "\x1b[0m"
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}
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result += fileType;
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permissions = "xwr"
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for(let i=8;i>=0;i--){
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result += parseInt(Math.pow(2,i).toString(2)) & mode ? permissions[i%3] : '-'
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}
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if(01000 & mode){ // check sticky bit
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color = "\x1b[40m\x1b[92m\x1b[7m"
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}
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let date = new Date(stats.mtimeMs*1000).toDateString().split(' ');
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result += ` ${usernameFromUID(stats.uid)}\t${groupnameFromGID(stats.gid)}\t${stats.size}\t${date[2]} ${date[1]}. ${options.includes('--color') ? color : ""}${file}${defaultColor}`
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console.log(result)
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}
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}
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else{
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result = ""
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const defaultColor = "\x1b[0m";
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if(options.includes('--color')){
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for(let file of options.includes('-a') ? files : nonHiddenFiles){
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stats = fs.lstatSync(`${path}/${file}`);
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let color = defaultColor
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if(stats.isDirectory()){
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color = colorList.di ? `\x1b[${colorList.di[1]}m\x1b[${colorList.di[0]}m` : defaultColor
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}
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else if (stats.isSymbolicLink()){
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color = colorList.ln ? `\x1b[${colorList.ln[1]}m\x1b[${colorList.ln[0]}m` : defaultColor
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}
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if(01000 & stats.mode){ // check sticky bit
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color = "\x1b[40m\x1b[92m\x1b[7m"
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}
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result += color + file + defaultColor + " ";
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}
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console.log(result)
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}else{
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console.log(options.includes('-a') ? files.join(' ') : nonHiddenFiles.join(' '))
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}
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}
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}
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function usernameFromUID(uid){
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const passwd = fs.readFileSync("/etc/passwd", {encoding: 'utf-8'}).split('\n');
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for(let line of passwd){
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let lineSplited = line.split(':')
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if(lineSplited[2] == uid){
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return lineSplited[0];
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}
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}
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return uid
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}
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function groupnameFromGID(uid){
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const passwd = fs.readFileSync("/etc/passwd", {encoding: 'utf-8'}).split('\n');
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for(let line of passwd){
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let lineSplited = line.split(':')
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if(lineSplited[3] == uid){
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return lineSplited[0];
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}
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}
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return uid
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} |