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| 1 | +#!/usr/bin/env node |
| 2 | +'use strict'; |
| 3 | + |
| 4 | +// MODULES // |
| 5 | + |
| 6 | +var fs = require( 'fs' ); |
| 7 | +var path = require( 'path' ); |
| 8 | +var parseArgs = require( 'minimist' ); |
| 9 | +var notifier = require( 'update-notifier' ); |
| 10 | +var pkg = require( './../package.json' ); |
| 11 | +var opts = require( './opts.json' ); |
| 12 | + |
| 13 | + |
| 14 | +// FUNCTIONS // |
| 15 | + |
| 16 | +/** |
| 17 | +* Performs initialization tasks. |
| 18 | +* |
| 19 | +* @private |
| 20 | +* @example |
| 21 | +* init(); |
| 22 | +*/ |
| 23 | +function init() { |
| 24 | + var opts; |
| 25 | + |
| 26 | + // Check if newer versions exist for this package: |
| 27 | + opts = { |
| 28 | + 'pkg': pkg |
| 29 | + }; |
| 30 | + notifier( opts ).notify(); |
| 31 | + |
| 32 | + // Set the process title to allow the process to be more easily identified: |
| 33 | + process.title = pkg.name; |
| 34 | + process.stdout.on( 'error', process.exit ); |
| 35 | +} // end FUNCTION init() |
| 36 | + |
| 37 | +/** |
| 38 | +* Prints usage information. |
| 39 | +* |
| 40 | +* @private |
| 41 | +* @example |
| 42 | +* help(); |
| 43 | +* // => '...' |
| 44 | +*/ |
| 45 | +function help() { |
| 46 | + var fpath = path.join( __dirname, 'usage.txt' ); |
| 47 | + fs.createReadStream( fpath ) |
| 48 | + .pipe( process.stdout ) |
| 49 | + .on( 'close', onClose ); |
| 50 | + |
| 51 | + function onClose() { |
| 52 | + process.exit( 0 ); |
| 53 | + } |
| 54 | +} // end FUNCTION help() |
| 55 | + |
| 56 | +/** |
| 57 | +* Prints the package version. |
| 58 | +* |
| 59 | +* @private |
| 60 | +* @example |
| 61 | +* version(); |
| 62 | +* // => '#.#.#' |
| 63 | +*/ |
| 64 | +function version() { |
| 65 | + var msg = pkg.version.toString()+'\n'; |
| 66 | + process.stdout.write( msg, 'utf8' ); |
| 67 | + process.exit( 0 ); |
| 68 | +} // end FUNCTION version() |
| 69 | + |
| 70 | +/** |
| 71 | +* Prints data as newline-delimited JSON (ndjson). |
| 72 | +* |
| 73 | +* @private |
| 74 | +*/ |
| 75 | +function ndjson() { |
| 76 | + var data; |
| 77 | + var i; |
| 78 | + |
| 79 | + data = require( './../lib' )(); |
| 80 | + for ( i = 0; i < data.length; i++ ) { |
| 81 | + console.log( JSON.stringify( data[i] ) ); |
| 82 | + } |
| 83 | +} // end FUNCTION ndjson() |
| 84 | + |
| 85 | +/** |
| 86 | +* Prints data as lines of text. |
| 87 | +* |
| 88 | +* @private |
| 89 | +*/ |
| 90 | +function txt() { |
| 91 | + var FILE_LIST; |
| 92 | + var i; |
| 93 | + |
| 94 | + FILE_LIST = require( './../data/file_list.json' ); |
| 95 | + i = 0; |
| 96 | + |
| 97 | + next(); |
| 98 | + |
| 99 | + /** |
| 100 | + * Callback which processes the next file. |
| 101 | + * |
| 102 | + * @private |
| 103 | + */ |
| 104 | + function next() { |
| 105 | + var fstream; |
| 106 | + var fpath; |
| 107 | + |
| 108 | + fpath = path.resolve( __dirname, '..', 'data', FILE_LIST[ i ] ); |
| 109 | + fstream = fs.createReadStream( fpath ); |
| 110 | + fstream.on( 'close', onClose ); |
| 111 | + fstream.pipe( process.stdout ); |
| 112 | + } // end FUNCTION next() |
| 113 | + |
| 114 | + /** |
| 115 | + * Callback invoked upon a stream close. |
| 116 | + * |
| 117 | + * @private |
| 118 | + * @return {void} |
| 119 | + */ |
| 120 | + function onClose() { |
| 121 | + i += 1; |
| 122 | + if ( i === FILE_LIST.length ) { |
| 123 | + return process.exit( 0 ); |
| 124 | + } |
| 125 | + console.log( '\n' ); |
| 126 | + next(); |
| 127 | + } // end FUNCTION onClose() |
| 128 | +} // end FUNCTION txt() |
| 129 | + |
| 130 | + |
| 131 | +// VARIABLES // |
| 132 | + |
| 133 | +var args; |
| 134 | + |
| 135 | + |
| 136 | +// MAIN // |
| 137 | + |
| 138 | +init(); |
| 139 | + |
| 140 | +// Parse command-line arguments: |
| 141 | +args = parseArgs( process.argv.slice( 2 ), opts ); |
| 142 | + |
| 143 | +if ( args.help ) { |
| 144 | + return help(); |
| 145 | +} |
| 146 | +if ( args.version ) { |
| 147 | + return version(); |
| 148 | +} |
| 149 | +if ( args.format === 'ndjson' ) { |
| 150 | + ndjson(); |
| 151 | +} else { |
| 152 | + txt(); |
| 153 | +} |
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