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