cli (1984B)
1 #!/usr/bin/env node 2 3 /** 4 * @license Apache-2.0 5 * 6 * Copyright (c) 2018 The Stdlib Authors. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 'use strict'; 22 23 // MODULES // 24 25 var resolve = require( 'path' ).resolve; 26 var readFileSync = require( '@stdlib/fs/read-file' ).sync; 27 var CLI = require( '@stdlib/cli/ctor' ); 28 var cwd = require( '@stdlib/process/cwd' ); 29 var rename = require( './../lib' ); 30 31 32 // MAIN // 33 34 /** 35 * Main execution sequence. 36 * 37 * @private 38 * @returns {void} 39 */ 40 function main() { 41 var oldPath; 42 var newPath; 43 var flags; 44 var args; 45 var cli; 46 var dir; 47 48 // Create a command-line interface: 49 cli = new CLI({ 50 'pkg': require( './../package.json' ), 51 'options': require( './../etc/cli_opts.json' ), 52 'help': readFileSync( resolve( __dirname, '..', 'docs', 'usage.txt' ), { 53 'encoding': 'utf8' 54 }) 55 }); 56 57 // Get any provided command-line options: 58 flags = cli.flags(); 59 if ( flags.help || flags.version ) { 60 return; 61 } 62 63 // Get any provided command-line arguments: 64 args = cli.args(); 65 66 if ( args.length !== 2 ) { 67 return cli.error( new Error( 'invalid invocation. Must provide two arguments: an old path and a new path.' ) ); 68 } 69 dir = cwd(); 70 oldPath = resolve( dir, args[ 0 ] ); 71 newPath = resolve( dir, args[ 1 ] ); 72 73 rename( oldPath, newPath, done ); 74 75 /** 76 * Callback invoked upon renaming a file. 77 * 78 * @private 79 * @param {Error} [error] - error object 80 * @returns {void} 81 */ 82 function done( error ) { 83 if ( error ) { 84 return cli.error( error ); 85 } 86 } 87 } 88 89 main();