137 lines
3.1 KiB
JavaScript
137 lines
3.1 KiB
JavaScript
var fs = require( 'fs' );
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var path = require( 'path' );
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var buble = require( '../dist/buble.deps.js' );
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var handleError = require( './handleError.js' );
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var EOL = require('os').EOL;
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function compile ( from, to, command, options ) {
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try {
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var stats = fs.statSync( from );
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if ( stats.isDirectory() ) {
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compileDir( from, to, command, options );
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} else {
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compileFile( from, to, command, options );
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}
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} catch ( err ) {
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handleError( err );
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}
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}
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function compileDir ( from, to, command, options ) {
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if ( !command.output ) handleError({ code: 'MISSING_OUTPUT_DIR' });
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try {
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fs.mkdirSync( to )
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} catch ( e ) {
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if ( e.code !== 'EEXIST' ) throw e
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}
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fs.readdirSync( from ).forEach( function ( file ) {
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compile( path.resolve( from, file ), path.resolve( to, file ), command, options );
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});
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}
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function compileFile ( from, to, command, options ) {
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var ext = path.extname( from );
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if ( ext !== '.js' && ext !== '.jsm' && ext !== '.es6' ) return;
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if ( to ) to = to.slice( 0, -ext.length ) + '.js';
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var source = fs.readFileSync( from, 'utf-8' );
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var result = buble.transform( source, {
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target: options.target,
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transforms: options.transforms,
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source: from,
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file: to,
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jsx: options.jsx
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});
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write( result, to, command );
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}
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function write ( result, to, command ) {
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if ( command.sourcemap === 'inline' ) {
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result.code += EOL + '//# sourceMappingURL=' + result.map.toUrl();
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} else if ( command.sourcemap ) {
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if ( !to ) {
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handleError({ code: 'MISSING_OUTPUT_FILE' });
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}
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result.code += EOL + '//# sourceMappingURL=' + path.basename( to ) + '.map';
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fs.writeFileSync( to + '.map', result.map.toString() );
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}
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if ( to ) {
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fs.writeFileSync( to, result.code );
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} else {
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console.log( result.code ); // eslint-disable-line no-console
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}
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}
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module.exports = function ( command ) {
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if ( command._.length > 1 ) {
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handleError({ code: 'ONE_AT_A_TIME' });
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}
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if ( command._.length === 1 ) {
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if ( command.input ) {
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handleError({ code: 'DUPLICATE_IMPORT_OPTIONS' });
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}
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command.input = command._[0];
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}
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var options = {
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target: {},
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transforms: {},
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jsx: command.jsx
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};
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if ( command.target ) {
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if ( !/^(?:(\w+):([\d\.]+),)*(\w+):([\d\.]+)$/.test( command.target ) ) {
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handleError({ code: 'BAD_TARGET' });
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}
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command.target.split( ',' )
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.map( function ( target ) {
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return target.split( ':' );
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})
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.forEach( function ( pair ) {
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options.target[ pair[0] ] = pair[1];
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});
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}
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if ( command.yes ) {
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command.yes.split( ',' ).forEach( function ( transform ) {
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options.transforms[ transform ] = true;
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});
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}
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if ( command.no ) {
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command.no.split( ',' ).forEach( function ( transform ) {
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options.transforms[ transform ] = false;
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});
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}
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if ( command.input ) {
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compile( command.input, command.output, command, options );
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}
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else {
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process.stdin.resume();
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process.stdin.setEncoding( 'utf8' );
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var source = '';
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process.stdin.on( 'data', function ( chunk ) {
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source += chunk;
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});
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process.stdin.on( 'end', function () {
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var result = buble.transform( source, options );
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write( result, null, command );
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});
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}
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};
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