module main import os import os.cmdline import v.pref import v.util.recompilation const is_debug = os.args.contains('-debug') fn main() { // support a renamed `v` executable too: vexe := pref.vexe_path() vroot := os.dir(vexe) vexe_name := os.file_name(vexe) short_v_name := vexe_name.all_before('.') // recompilation.must_be_enabled(vroot, 'Please install V from source, to use `$vexe_name self` .') os.chdir(vroot)! os.setenv('VCOLORS', 'always', true) args := os.args[1..].filter(it != 'self') jargs := args.join(' ') obinary := cmdline.option(args, '-o', '') sargs := if obinary != '' { jargs } else { '$jargs -o v2' } cmd := '${os.quoted_path(vexe)} $sargs ${os.quoted_path('cmd/v')}' options := if args.len > 0 { '($sargs)' } else { '' } println('V self compiling ${options}...') compile(vroot, cmd) if obinary != '' { // When -o was given, there is no need to backup/rename the original. // The user just wants an independent copy of v, and so we are done. return } backup_old_version_and_rename_newer(short_v_name) or { panic(err.msg()) } println('V built successfully as executable "$vexe_name".') } fn compile(vroot string, cmd string) { result := os.execute_or_exit(cmd) if result.exit_code != 0 { eprintln('cannot compile to `$vroot`: \n$result.output') exit(1) } if result.output.len > 0 { println(result.output.trim_space()) } } fn list_folder(short_v_name string, bmessage string, message string) { if !is_debug { return } if bmessage != '' { println(bmessage) } if os.user_os() == 'windows' { os.system('dir $short_v_name*.exe') } else { os.system('ls -lartd $short_v_name*') } println(message) } fn backup_old_version_and_rename_newer(short_v_name string) !bool { mut errors := []string{} short_v_file := if os.user_os() == 'windows' { '${short_v_name}.exe' } else { '$short_v_name' } short_v2_file := if os.user_os() == 'windows' { 'v2.exe' } else { 'v2' } short_bak_file := if os.user_os() == 'windows' { 'v_old.exe' } else { 'v_old' } v_file := os.real_path(short_v_file) v2_file := os.real_path(short_v2_file) bak_file := os.real_path(short_bak_file) list_folder(short_v_name, 'before:', 'removing $bak_file ...') if os.exists(bak_file) { os.rm(bak_file) or { errors << 'failed removing $bak_file: $err.msg()' } } list_folder(short_v_name, '', 'moving $v_file to $bak_file ...') os.mv(v_file, bak_file) or { errors << err.msg() } list_folder(short_v_name, '', 'removing $v_file ...') os.rm(v_file) or {} list_folder(short_v_name, '', 'moving $v2_file to $v_file ...') os.mv_by_cp(v2_file, v_file) or { panic(err.msg()) } list_folder(short_v_name, 'after:', '') if errors.len > 0 { eprintln('backup errors:\n >> ' + errors.join('\n >> ')) } return true }