Implement specification of subcommand

index.js

@@ -182,6 +182,7 @@ Command.prototype.command = function(name, desc, opts) {
     if (opts.isDefault) this.defaultExecutable = cmd._name;
   }
   cmd._noHelp = !!opts.noHelp;
+  cmd._specifySubcommand = opts.subcommand;
   this.commands.push(cmd);
   cmd.parseExpectedArgs(args);
   cmd.parent = this;
@@ -484,7 +485,16 @@ Command.prototype.parse = function(argv) {
     })[0];
   }
 
-  if (this._execs[name] && typeof this._execs[name] !== 'function') {
+  var specifySubcommand = null;
+  if (name) {
+    specifySubcommand = this.commands.filter(function(command) {
+      return command._name === name && command._specifySubcommand != null;
+    })[0];
+  }
+
+  if (specifySubcommand) {
+    return this.executeSubCommand(argv, args, parsed.unknown, specifySubcommand._specifySubcommand);
+  } else if (this._execs[name] && typeof this._execs[name] !== 'function') {
     return this.executeSubCommand(argv, args, parsed.unknown);
   } else if (aliasCommand) {
     // is alias of a subCommand
@@ -505,10 +515,11 @@ Command.prototype.parse = function(argv) {
  * @param {Array} argv
  * @param {Array} args
  * @param {Array} unknown
+ * @param {String} specifySubcommand
  * @api private
  */
 
-Command.prototype.executeSubCommand = function(argv, args, unknown) {
+Command.prototype.executeSubCommand = function(argv, args, unknown, specifySubcommand) {
   args = args.concat(unknown);
 
   if (!args.length) this.help();
@@ -524,6 +535,9 @@ Command.prototype.executeSubCommand = function(argv, args, unknown) {
   var f = argv[1];
   // name of the subcommand, link `pm-install`
   var bin = basename(f, path.extname(f)) + '-' + args[0];
+  if (specifySubcommand != null) {
+    bin = specifySubcommand;
+  }
 
   // In case of globally installed, get the base dir where executable
   //  subcommand file should be located at

test/fixtures/pm

@@ -11,4 +11,6 @@ program
   .command('listen', 'listen for supported signal events').alias('l')
   .command('publish', 'publish or update package').alias('p')
   .command('default', 'default command', {noHelp: true, isDefault: true})
+  .command('specifyInstall', 'specify install subcommand', {subcommand: 'pm-install'})
+  .command('specifyPublish', 'specify publish subcommand', {subcommand: 'pm-publish'})
   .parse(process.argv);

test/test.command.executableSubcommandSpecifySubcommand.js

@@ -0,0 +1,44 @@
+var exec = require('child_process').exec
+  , path = require('path')
+  , should = require('should');
+
+
+
+var bin = path.join(__dirname, './fixtures/pm')
+// success case
+exec(bin + ' specifyInstall', function(error, stdout, stderr) {
+  // Optionally specify `pm-install`
+  stdout.should.equal('install\n');
+});
+exec(bin + ' specifyPublish', function(error, stdout, stderr) {
+  // Optionally specify `pm-publish`
+  stdout.should.equal('publish\n');
+});
+
+// not exist
+exec(bin + ' list', function (error, stdout, stderr) {
+  //stderr.should.equal('\n  pm-list(1) does not exist, try --help\n\n');
+  should.notEqual(0, stderr.length);
+});
+
+// success case
+exec(bin + ' install', function (error, stdout, stderr) {
+  stdout.should.equal('install\n');
+});
+
+// subcommand bin file with explicit extension
+exec(bin + ' publish', function (error, stdout, stderr) {
+  stdout.should.equal('publish\n');
+});
+
+// spawn EACCES
+exec(bin + ' search', function (error, stdout, stderr) {
+  should.notEqual(0, stderr.length);
+});
+
+// when `bin` is a symbol link for mocking global install
+var bin = path.join(__dirname, './fixtures/pmlink')
+// success case
+exec(bin + ' install', function (error, stdout, stderr) {
+  stdout.should.equal('install\n');
+});