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v/cmd/tools/vcreate.v

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module main
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// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
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// This module follows a similar convention to Rust: `init` makes the
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// structure of the program in the _current_ directory, while `new`
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// makes the program structure in a _sub_ directory. Besides that, the
// functionality is essentially the same.
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import os
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struct Create {
mut:
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name string
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description string
}
fn cerror(e string){
eprintln('\nerror: $e')
}
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fn vmod_content(name, desc string) string {
return [
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'Module {',
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' name: \'${name}\',',
' description: \'${desc}\',',
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' dependencies: []',
'}'
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].join('\n')
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}
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fn main_content() string {
return [
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'module main\n',
'fn main() {',
' println(\'Hello World !\')',
'}'
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].join('\n')
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}
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fn gen_gitignore(name string) string {
return [
'main',
'$name',
'*.so',
'*.dylib',
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'*.dll'
].join('\n')
}
fn (c &Create)create_vmod() {
mut vmod := os.create('${c.name}/v.mod') or {
cerror(err)
exit(1)
}
vmod.write(vmod_content(c.name, c.description))
vmod.close()
}
fn (c &Create)create_main() {
mut main := os.create('${c.name}/${c.name}.v') or {
cerror(err)
exit(2)
}
main.write(main_content())
main.close()
}
fn (c &Create)init_vmod() {
mut vmod := os.create('v.mod') or {
cerror(err)
exit(1)
}
vmod.write(vmod_content(c.name, c.description))
vmod.close()
}
fn (c &Create)create_git_repo(dir string) {
// Create Git Repo and .gitignore file
if !os.is_dir('${dir}/.git') {
os.exec('git init ${dir}') or {
cerror('Unable to create git repo')
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exit(4)
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}
if !os.exists('${dir}/.gitignore') {
mut fl := os.create('${dir}/.gitignore') or {
// We don't really need a .gitignore, it's just a nice-to-have
return
}
fl.write(gen_gitignore(c.name))
fl.close()
}
}
}
fn (c &Create)init_main() {
// The file already exists, don't over-write anything.
// Searching in the 'src' directory allows flexibility user module structure
if os.exists('${c.name}.v') || os.exists('src/${c.name}.v') {
return
}
mut main := os.create('${c.name}.v') or {
cerror(err)
exit(2)
}
main.write(main_content())
main.close()
}
fn create() {
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mut c := Create{}
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print('Input your project name: ')
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c.name = os.get_line()
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if os.is_dir(c.name) {
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cerror('${c.name} folder already exists')
exit(3)
}
print('Input your project description: ')
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c.description = os.get_line()
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println('Initialising ...')
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os.mkdir(c.name) or {
panic(err)
}
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c.create_vmod()
c.create_main()
c.create_git_repo(c.name)
}
fn init() {
if os.exists('v.mod') {
cerror('`v init` cannot be run on existing v modules')
exit(3)
}
mut c := Create{}
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c.name = os.file_name(os.getwd())
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c.description = ''
c.init_vmod()
c.init_main()
c.create_git_repo('')
println("Change your module's description in `v.mod`")
}
fn main() {
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if 'new' == os.args[1] {
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create()
} else if 'init' == os.args[1] {
init()
} else {
cerror('Unknown command: ${os.args[1]}')
exit(1)
}
println('Complete!')
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}