module main import os import v.pref import v.util struct App { is_verbose bool vexe string vroot string } fn new_app() App { vexe := os.real_path(pref.vexe_path()) return App{ is_verbose: '-v' in os.args vexe: vexe vroot: os.dir(vexe) } } fn main() { app := new_app() os.chdir(app.vroot) println('Updating V...') 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 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') } } 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` ...') } if self_result := os.exec(vself) { println(self_result.output.trim_space()) if self_result.exit_code == 0 { return } } app.make(vself) } fn (app App) make(vself string) { mut make := 'make' $if windows { make = 'make.bat' } println('`$vself` failed, running `$make`...') make_result := os.exec(make) or { panic(err) } println(make_result.output) } fn (app App) show_current_v_version() { println('Current V version:') os.system('$app.vexe version') } 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) } fn (app App) git_command(command string) { git_result := os.exec('git $command') or { panic(err) } if git_result.exit_code != 0 { if git_result.output.contains('Permission denied') { eprintln('have no access `$app.vroot`: Permission denied') } else { eprintln(git_result.output) } exit(1) } else { if app.is_verbose { println(git_result.output) } } }