58 lines
1.7 KiB
V
58 lines
1.7 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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fn main() {
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vexe := pref.vexe_path()
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vroot := os.dir(vexe)
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recompilation.must_be_enabled(vroot, 'Please install V from source, to use `v self` .')
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os.chdir(vroot)
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os.setenv('VCOLORS', 'always', true)
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self_idx := os.args.index('self')
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args := os.args[1..self_idx]
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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 { '$jargs -o v2' }
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cmd := '$vexe $sargs cmd/v'
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options := if args.len > 0 { '($sargs)' } else { '' }
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println('V self compiling ${options}...')
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compile(vroot, cmd)
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if obinary != '' {
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// When -o was given, there is no need to backup/rename the original.
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// The user just wants an independent copy of v, and so we are done.
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return
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}
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backup_old_version_and_rename_newer() or { panic(err) }
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println('V built successfully!')
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}
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fn compile(vroot string, cmd string) {
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result := os.exec(cmd) or { panic(err) }
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if result.exit_code != 0 {
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eprintln('cannot compile to `$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 backup_old_version_and_rename_newer() ?bool {
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mut errors := []string{}
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v_file := if os.user_os() == 'windows' { 'v.exe' } else { 'v' }
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v2_file := if os.user_os() == 'windows' { 'v2.exe' } else { 'v2' }
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bak_file := if os.user_os() == 'windows' { 'v_old.exe' } else { 'v_old' }
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if os.exists(bak_file) {
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os.rm(bak_file) or { errors << 'failed removing $bak_file: $err' }
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}
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os.mv(v_file, bak_file) or { errors << err }
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os.mv(v2_file, v_file) or { errors << err }
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if errors.len > 0 {
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return error('backup errors:\n >> ' + errors.join('\n >> '))
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}
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return true
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}
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