vcreate: minor tweaks (#9275)

cmd/tools/vcreate.v

@@ -1,8 +1,7 @@
-module main
-
 // Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
 // Use of this source code is governed by an MIT license that can be found in the LICENSE file.
-//
+module main
+
 // This module follows a similar convention to Rust: `init` makes the
 // structure of the program in the _current_ directory, while `new`
 // makes the program structure in a _sub_ directory. Besides that, the
@@ -22,6 +21,14 @@ fn cerror(e string) {
 }
 
 fn check_name(name string) string {
+	if name.is_title() {
+		mut cname := name.to_lower()
+		if cname.contains(' ') {
+			cname = cname.replace(' ', '_')
+		}
+		eprintln('warning: the project name cannot be capitalized, the name will be changed to `$cname`')
+		return cname
+	}
 	if name.contains(' ') {
 		cname := name.replace(' ', '_')
 		eprintln('warning: the project name cannot contain spaces, the name will be changed to `$cname`')
@@ -154,13 +161,18 @@ fn init_project() {
 }
 
 fn main() {
-	if os.args[1] == 'new' {
+	cmd := os.args[1]
+	match cmd {
+		'new' {
 			create(os.args[2..])
-	} else if os.args[1] == 'init' {
+		}
+		'init' {
 			init_project()
-	} else {
+		}
-		cerror('Unknown command: ${os.args[1]}')
+		else {
+			cerror('unknown command: $cmd')
 			exit(1)
 		}
+	}
 	println('Complete!')
 }

cmd/v/help/default.txt

@@ -49,4 +49,4 @@ Use "v help <command>" for more information about a command, example: `v help bu
 Use "v help other" to see less frequently used commands.
 
 Note: Help is required to write more help topics.
-Only build, doc, fmt, run, test, search, install, remove, update, bin2v, check-md are properly documented currently.
+Only build, new, init, doc, fmt, run, test, search, install, remove, update, bin2v, check-md are properly documented currently.

cmd/v/help/init.txt

@@ -0,0 +1,4 @@
+Usage:
+  v init
+
+Setup the file structure for an already existing V project.