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vmm: config: Add "valueless" options to OptionParser

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Valueless options are those like "off" or "tty" as used by the console
options.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2020-04-02 16:50:37 +01:00
parent 2ae3392d32
commit bed282b801
1 changed files with 28 additions and 7 deletions
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35
vmm/src/config.rs
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@ -85,6 +85,7 @@ pub struct OptionParser {
struct OptionParserValue {
value: Option<String>,
requires_value: bool,
}
#[derive(Debug)]
@ -113,14 +114,17 @@ impl OptionParser {
for option in options_list.iter() {
let parts: Vec<&str> = option.split('=').collect();
if parts.len() != 2 {
return Err(OptionParserError::InvalidSyntax((*option).to_owned()));
}
match self.options.get_mut(parts[0]) {
None => return Err(OptionParserError::UnknownOption(parts[0].to_owned())),
Some(value) => {
value.value = Some(parts[1].trim().to_owned());
if value.requires_value {
if parts.len() != 2 {
return Err(OptionParserError::InvalidSyntax((*option).to_owned()));
}
value.value = Some(parts[1].trim().to_owned());
} else {
value.value = Some(String::new());
}
}
}
}
@ -129,8 +133,25 @@ impl OptionParser {
}
pub fn add(&mut self, option: &str) -> &mut Self {
self.options
.insert(option.to_owned(), OptionParserValue { value: None });
self.options.insert(
option.to_owned(),
OptionParserValue {
value: None,
requires_value: true,
},
);
self
}
pub fn add_valueless(&mut self, option: &str) -> &mut Self {
self.options.insert(
option.to_owned(),
OptionParserValue {
value: None,
requires_value: false,
},
);
self
}