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