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cleanohash.js
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cleanohash.js
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const { readFileSync, writeFileSync, existsSync, unlinkSync } = require('fs');
const glob = require( 'glob' );
const md5File = require('md5-file')
const { program } = require('commander');
const { exit } = require('process');
let options = {};
let hash_db = [];
function handle_args() {
program
.version('1.0.0')
.description(`Hash or clean a directory of media files`)
.requiredOption('-db <hash db file>', 'file path of hashes db')
.requiredOption('-c <C|H>', 'operation type Clean or Hash')
.requiredOption('-d <dir to process', 'directory to clean or hash')
program.parse();
options = program.opts();
}
function load_hash_db(filedb) {
try {
if(existsSync(filedb)) {
const data = readFileSync(filedb);
if(data.length > 0)
hash_db = JSON.parse(data);
}
} catch(e) {
console.log(`Cannot find or open file ${filedb}. Cannot continue...`);
exit(1);
}
}
function store_hash_db(db, filedb) {
try {
writeFileSync(filedb, JSON.stringify(db, null, 2), 'utf8');
} catch(e) {
console.log(`Error in writing hash DB file...`);
exit(1);
}
}
function clean_dir(db, dir) {
if(!existsSync(dir)) {
console.log(`Cannot continue as dir ${dir} is not existing...`);
exit(1);
}
console.log(`Start CLEANING ${dir}`);
glob(`${dir}/**/*.*`, function(err, files) {
files.forEach(file => {
process.stdout.write(`${file} --> ... `);
const hash = md5File.sync(file);
if(hash_db.includes(hash)) {
process.stdout.write('DELETE \n');
unlinkSync(file);
} else
process.stdout.write(`${hash} \n`);
});
console.log(`Finish CLEANING ${dir}`);
});
}
function hash_dir(db, dir) {
if(!existsSync(dir)) {
console.log(`Cannot continue as dir ${dir} is not existing...`);
exit(1);
}
console.log(`Start HASHING ${dir}`);
glob(`${dir}/**/*.*`, function(err, files) {
files.forEach(file => {
process.stdout.write(`${file} --> ... `);
const hash = md5File.sync(file);
if(!hash_db.includes(hash))
hash_db.push(hash);
process.stdout.write(`${hash} \n`);
});
store_hash_db(hash_db, db);
console.log(`Finish HASHING ${dir}`);
});
}
(async function(){
handle_args();
let command = options['c'];
let dir = options['d'];
let db = options['Db'];
load_hash_db(db);
switch(command) {
case 'C':
clean_dir(db, dir);
break;
case 'H':
hash_dir(db, dir);
break;
default:
console.log('Invalid operation. Must be C or H');
}
})();