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feat(complete): Basic subcommand support

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Ed Page 2022-04-27 08:41:43 -05:00
parent 9f9e410c6d
commit 5882e3df3b
1 changed files with 27 additions and 3 deletions
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30
clap_complete/src/dynamic.rs
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@ -296,15 +296,39 @@ complete OPTIONS -F _clap_complete_NAME EXECUTABLES
/// Complete the command specified /// Complete the command specified
pub fn complete( pub fn complete(
cmd: &mut clap::Command, cmd: &mut clap::Command,
_args: Vec<std::ffi::OsString>, args: Vec<std::ffi::OsString>,
_arg_index: usize, arg_index: usize,
_comp_type: CompType, _comp_type: CompType,
_trailing_space: bool, _trailing_space: bool,
current_dir: Option<&std::path::Path>, current_dir: Option<&std::path::Path>,
) -> Result<Vec<std::ffi::OsString>, std::io::Error> { ) -> Result<Vec<std::ffi::OsString>, std::io::Error> {
cmd.build(); cmd.build();
let current_cmd = &*cmd; let raw_args = clap_lex::RawArgs::new(args.into_iter());
let mut cursor = raw_args.cursor();
let mut target_cursor = raw_args.cursor();
raw_args.seek(
&mut target_cursor,
clap_lex::SeekFrom::Start(arg_index as u64),
);
// TODO: Multicall support
if !cmd.is_no_binary_name_set() {
raw_args.next_os(&mut cursor);
}
let mut current_cmd = &*cmd;
while let Some(arg) = raw_args.next(&mut cursor) {
if let Ok(value) = arg.to_value() {
if let Some(next_cmd) = current_cmd.find_subcommand(value) {
current_cmd = next_cmd;
}
}
if cursor == target_cursor {
break;
}
}
let completions = complete_new(current_cmd, current_dir)?; let completions = complete_new(current_cmd, current_dir)?;
Ok(completions) Ok(completions)