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tools: turn v -watch into a v watch sub-command, so that it can have its own options

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This commit is contained in:
Delyan Angelov
2021-04-28 12:23:23 +03:00
parent e4a2d1b239
commit 626517f5f7
4 changed files with 51 additions and 18 deletions
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21
vlib/flag/flag.v
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@@ -65,6 +65,7 @@ pub mut:
application_description string
min_free_args int
args_description string
allow_unknown_args bool // whether passing undescribed arguments is allowed
}
[unsafe]
@@ -123,6 +124,14 @@ pub fn (mut fs FlagParser) skip_executable() {
fs.args.delete(0)
}
// allow_unknown_args - if your program has sub commands, that have
// their own arguments, you can call .allow_unknown_args(), so that
// the subcommand arguments (which generally are not known to your
// parent program), will not cause the validation in .finalize() to fail.
pub fn (mut fs FlagParser) allow_unknown_args() {
fs.allow_unknown_args = true
}
// private helper to register a flag
fn (mut fs FlagParser) add_flag(name string, abbr byte, usage string, desc string) {
fs.flags << Flag{
@@ -495,11 +504,13 @@ pub fn (fs FlagParser) usage() string {
// defined on the command line. If additional flags are found, i.e.
// (things starting with '--' or '-'), it returns an error.
pub fn (fs FlagParser) finalize() ?[]string {
for a in fs.args {
if (a.len >= 2 && a[..2] == '--') || (a.len == 2 && a[0] == `-`) {
return IError(&UnkownFlagError{
msg: 'Unknown flag `$a`'
})
if !fs.allow_unknown_args {
for a in fs.args {
if (a.len >= 2 && a[..2] == '--') || (a.len == 2 && a[0] == `-`) {
return IError(&UnkownFlagError{
msg: 'Unknown flag `$a`'
})
}
}
}
if fs.args.len < fs.min_free_args && fs.min_free_args > 0 {