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vself: allow for ./v -o x self with no further renaming/deleting v itself (#6609)

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This commit is contained in:
Delyan Angelov 2020-10-15 22:39:59 +03:00
parent d261844da0
commit 23644d92a9
1 changed files with 20 additions and 8 deletions
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28
cmd/tools/vself.v
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@ -1,6 +1,7 @@
module main
import os
import os.cmdline
import v.pref
fn main() {
@ -10,24 +11,35 @@ fn main() {
os.setenv('VCOLORS', 'always', true)
self_idx := os.args.index('self')
args := os.args[1..self_idx]
args_str := args.join(' ')
options := if args.len > 0 { '($args_str)' } else { '' }
jargs := args.join(' ')
obinary := cmdline.option(args, '-o', 'v')
sargs := if obinary != '' { jargs } else { '$jargs -o v2 ' }
cmd := '$vexe $sargs cmd/v'
options := if args.len > 0 { '($sargs)' } else { '' }
println('V self compiling ${options}...')
cmd := '$vexe -o v2 $args_str cmd/v'
compile(vroot, cmd)
if obinary != '' {
// When -o was given, there is no need to backup/rename the original.
// The user just wants an independent copy of v, and so we are done.
return
}
backup_old_version_and_rename_newer()
}
fn compile(vroot string, cmd string) {
result := os.exec(cmd) or {
panic(err)
}
if result.exit_code != 0 {
mut err := 'Permission denied'
if !result.output.contains('Permission denied') {
err = '\n$result.output'
}
eprintln('cannot compile to `$vroot`: $err')
eprintln('cannot compile to `$vroot`: \n$result.output')
exit(1)
}
if result.output.len > 0 {
println(result.output.trim_space())
}
}
fn backup_old_version_and_rename_newer() {
v_file := if os.user_os() == 'windows' { 'v.exe' } else { 'v' }
v2_file := if os.user_os() == 'windows' { 'v2.exe' } else { 'v2' }
bak_file := if os.user_os() == 'windows' { 'v_old.exe' } else { 'v_old' }