Maj de sheebr + maj mineure des scripts

2021-11-29 14:08:48 +01:00
parent 07c16904e6
commit 952edb4270
18 changed files with 294 additions and 33 deletions
@@ -1,14 +1,129 @@
 const fs = require('fs')

-let path = process.argv[3] ?? '.'
-let optionsArray = process.argv.slice(4) ?? []
+
+let paths = []
 let options = []
-for(let option of optionsArray){
-    if(option.startwith("--")) options.push(option.slice)
-    else if(options.startwith("-")) options.push += option.slice(1).split('').map(el => {return '-' + el})
+
+for(arg of process.argv.slice(3)){
+    if(arg.startsWith('--')){
+        options.push(arg)
+    }
+    else if(arg.startsWith('-')){
+        for(let option of arg.slice(1)){
+            options.push('-' + option);
+        }
+    }
+    else{
+        paths.push(arg)
+    }
 }

-const files = fs.readdirSync(path);
-const nonHiddenFiles = files.filter(file => file[0] != '.')
+if(paths.length == 0){
+    paths = ['.'];
+}

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