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v/cmd/tools/vup.v

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module main
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import os
import v.pref
import v.util
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struct App {
is_verbose bool
vexe string
vroot string
}
fn new_app() App {
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vexe := os.real_path(pref.vexe_path())
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return App{
is_verbose: '-v' in os.args
vexe: vexe
vroot: os.dir(vexe)
}
}
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fn main() {
app := new_app()
os.chdir(app.vroot)
println('Updating V...')
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app.update_from_master()
v_hash := util.githash(false)
current_hash := util.githash(true)
// println(v_hash)
// println(current_hash)
if v_hash == current_hash {
app.show_current_v_version()
return
}
$if windows {
app.backup('cmd/tools/vup.exe')
}
app.recompile_v()
os.exec('$app.vexe cmd/tools/vup.v') or {
panic(err)
}
app.show_current_v_version()
}
fn (app App) update_from_master() {
if app.is_verbose {
println('> updating from master ...')
}
if !os.exists('.git') {
// initialize as if it had been cloned
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app.git_command('init')
app.git_command('remote add origin https://github.com/vlang/v')
app.git_command('fetch')
app.git_command('reset --hard origin/master')
app.git_command('clean --quiet -xdf --exclude v.exe --exclude cmd/tools/vup.exe')
} else {
// pull latest
app.git_command('pull https://github.com/vlang/v master')
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}
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}
fn (app App) recompile_v() {
// NB: app.vexe is more reliable than just v (which may be a symlink)
vself := '$app.vexe self'
if app.is_verbose {
println('> recompiling v itself with `$vself` ...')
}
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if self_result := os.exec(vself) {
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println(self_result.output.trim_space())
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if self_result.exit_code == 0 {
return
}
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}
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app.make(vself)
}
fn (app App) make(vself string) {
mut make := 'make'
$if windows {
make = 'make.bat'
}
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println('`$vself` failed, running `$make`...')
make_result := os.exec(make) or {
panic(err)
}
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println(make_result.output)
}
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fn (app App) show_current_v_version() {
println('Current V version:')
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os.system('$app.vexe version')
}
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fn (app App) backup(file string) {
backup_file := '${file}_old.exe'
if os.exists(backup_file) {
os.rm(backup_file)
}
os.mv(file, backup_file)
}
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fn (app App) git_command(command string) {
git_result := os.exec('git $command') or {
panic(err)
}
if git_result.exit_code != 0 {
if git_result.output.contains('Permission denied') {
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eprintln('No access to `$app.vroot`: Permission denied')
} else {
eprintln(git_result.output)
}
exit(1)
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} else {
if app.is_verbose {
println(git_result.output)
}
}
}