index.js

#!/usr/bin/env node
var findit = require('findit');
var fs = require('fs');
var singleQuote = require('singlequote');
var verbose = false;
var args = process.argv.splice(2).filter(function (param) {
	return param === '-v' ? !(verbose = true) : true
});
var nonFoundPaths = args.filter(function (p) {
	return !fs.existsSync(p)
});
if (nonFoundPaths.length) {
	console.error('Error: Invalid path%s supplied', nonFoundPaths.length > 1 ? 's' : '');
	nonFoundPaths.forEach(function(p){ console.error('- ' + p) });
	process.exit(1);
}
if (!args.length) {
	console.log('USAGE: jsq fileOrDirectory [fileOrDirectory [fileOrDirectory [..]]] [-v]');
	process.exit(0);
}
var replaceCount = 0, skipParseErrorCount = 0, skipSingleQuoteErrorCount = 0, unknownErrorCount = 0, fileCount = 0;
args.forEach(function (dirOrFile) {
	var finder = findit(dirOrFile);
	finder.on('file', function (file) {
		if (/\.js$/.test(file)) {
			fileCount++;
			var code = fs.readFileSync(file, 'utf-8');
			var codeWithSingleQuotes;
			try {
				codeWithSingleQuotes = singleQuote(code);
			} catch (ex) {
				if(ex.code==='singlequote'){
					skipSingleQuoteErrorCount++;
					verbose && console.log('Skipping file because jsq did not handle code correctly:\n%s', file, ex.inner);
					return;
				}
				if(ex.code==='parse'){
					skipParseErrorCount++;
					verbose && console.log('Skipping file because it can not be parsed as valid JavaScript:\n%s', file, ex.inner);
					return;
				}
				unknownErrorCount++;
				verbose && console.log('Skipping file because of unknown internal error:\n%s', file, ex.inner);
				return;
			}
			if (code !== codeWithSingleQuotes) {
				replaceCount++;
				verbose && console.log('Replacing double quoted strings with single quoted strings in: %s', file);
				fs.writeFileSync(file, codeWithSingleQuotes, 'utf-8');
			} else if(verbose){
				console.log('No double quotes JavaScript strings found in: %s', file);
			}
		}
	});
	finder.on('end', function () {
		verbose && console.log('SUMMARY');
		console.log('%d .js files were scanned by jsq', fileCount);
		skipParseErrorCount && console.log('%s of those were skipped because of error parsing JavaScript in file', skipParseErrorCount,
			verbose ? '' : '(use -v param to see details)');
		skipSingleQuoteErrorCount && console.log('%s of those were skipped because jsq could not handle them correctly (we accept pull requests)', skipSingleQuoteErrorCount,
			verbose ? '' : '(use -v param to see details)');
		unknownErrorCount && console.log('%s of those were skipped because unknown internal errors in jsq', unknownErrorCount,
			verbose ? '' : '(use -v param to see details)');
		console.log('%s of those had double quoted JavaScript strings replaced', replaceCount || 'None');
	});
});