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use std::collections::BTreeMap;
use std::ffi::OsStr;
use std::process;
use crate::name::Name;
use crate::registry::Flag;
use crate::token::{Token, Tokenizer};
pub fn parse() -> Vec<&'static OsStr> {
let mut shorts = BTreeMap::new();
let mut longs = BTreeMap::new();
for flag in inventory::iter::<Flag> {
if let Some(short) = flag.short {
shorts.insert(short, flag);
}
longs.insert(flag.name, flag);
}
let mut args = Vec::new();
let mut tokens = Tokenizer::new();
while let Some(token) = tokens.next() {
match token {
Token::Short(ch) => match shorts.get(&ch) {
Some(flag) => {
let name = Name::short(ch);
flag.parser.parse(name, &mut tokens);
}
None => {
eprintln!("Unrecognized flag: -{}", ch);
process::exit(1);
}
},
Token::Long(name) => match longs.get(name) {
Some(flag) => {
let name = Name::long(flag.name);
flag.parser.parse(name, &mut tokens);
}
None => {
if name.starts_with("no") {
if let Some(flag) = longs.get(&name[2..]) {
if flag.parser.is_bool() {
flag.parser.unset_bool();
continue;
}
}
}
eprintln!("Unrecognized flag: --{}", name);
process::exit(1);
}
},
Token::Arg(arg) => args.push(arg),
}
}
args
}