Refactor arg parser out of binary

Author: tmcw

bin/documentation.js

@@ -8,54 +8,9 @@ var documentation = require('../'),
   path = require('path'),
   fs = require('fs'),
   vfs = require('vinyl-fs'),
-
-  loadConfig = require('../lib/load_config.js');
-
-var yargs = require('yargs')
-  .usage('Usage: $0 <command> [options]')
-
-  .alias('f', 'format')
-  .default('f', 'json')
-  .describe('f', 'output format, of [json, md, html]')
-
-  .describe('lint', 'check output for common style and uniformity mistakes')
-
-  .describe('t', 'specify a theme: this must be a valid theme module')
-  .alias('t', 'theme')
-
-  .boolean('p')
-  .describe('p', 'generate documentation tagged as private')
-  .alias('p', 'private')
-
-  .describe('name', 'project name. by default, inferred from package.json')
-  .describe('version', 'project version. by default, inferred from package.json')
-
-  .boolean('shallow')
-  .describe('shallow', 'shallow mode turns off dependency resolution, ' +
-    'only processing the specified files (or the main script specified in package.json)')
-  .default('shallow', false)
-
-  .boolean('polyglot')
-  .describe('polyglot', 'polyglot mode turns off dependency resolution and ' +
-            'enables multi-language support. use this to document c++')
-
-  .boolean('g')
-  .describe('g', 'infer links to github in documentation')
-  .alias('g', 'github')
-
-  .describe('o', 'output location. omit for stdout, otherwise is a filename ' +
-            'for single-file outputs and a directory name for multi-file outputs like html')
-  .alias('o', 'output')
-  .default('o', 'stdout')
-
-  .describe('c', 'configuration file. an array defining explicit sort order')
-  .alias('c', 'config')
-
-  .help('h')
-  .alias('h', 'help')
-
-  .example('$0 foo.js', 'parse documentation in a given file'),
-  argv = yargs.argv;
+  loadConfig = require('../lib/load_config.js'),
+  args = require('../lib/args.js'),
+  argv = args.parse(process.argv.slice(2));
 
 var inputs,
   name = argv.name,

lib/args.js

@@ -0,0 +1,46 @@
+var args = require('yargs')
+  .usage('Usage: $0 <command> [options]')
+
+  .alias('f', 'format')
+  .default('f', 'json')
+  .describe('f', 'output format, of [json, md, html]')
+
+  .describe('lint', 'check output for common style and uniformity mistakes')
+
+  .describe('t', 'specify a theme: this must be a valid theme module')
+  .alias('t', 'theme')
+
+  .boolean('p')
+  .describe('p', 'generate documentation tagged as private')
+  .alias('p', 'private')
+
+  .describe('name', 'project name. by default, inferred from package.json')
+  .describe('version', 'project version. by default, inferred from package.json')
+
+  .boolean('shallow')
+  .describe('shallow', 'shallow mode turns off dependency resolution, ' +
+    'only processing the specified files (or the main script specified in package.json)')
+  .default('shallow', false)
+
+  .boolean('polyglot')
+  .describe('polyglot', 'polyglot mode turns off dependency resolution and ' +
+            'enables multi-language support. use this to document c++')
+
+  .boolean('g')
+  .describe('g', 'infer links to github in documentation')
+  .alias('g', 'github')
+
+  .describe('o', 'output location. omit for stdout, otherwise is a filename ' +
+            'for single-file outputs and a directory name for multi-file outputs like html')
+  .alias('o', 'output')
+  .default('o', 'stdout')
+
+  .describe('c', 'configuration file. an array defining explicit sort order')
+  .alias('c', 'config')
+
+  .help('h')
+  .alias('h', 'help')
+
+  .example('$0 foo.js', 'parse documentation in a given file');
+
+module.exports = args;