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bash: build option/subcommand strings directly #238

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bash: build option/subcommand strings directly #238

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36 changes: 25 additions & 11 deletions argh_complete/src/bash.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -73,41 +73,55 @@ fn generate_bash_case(out: &mut String, prefix: &str, cmd: &CommandInfoWithArgs<
fn generate_bash_dispatch(out: &mut String, full_name: &str, cmd: &CommandInfoWithArgs<'_>) {
writeln!(out, " {})", full_name).unwrap();

let mut opts = Vec::new();
let mut opts = String::new();
for flag in cmd.flags {
if !flag.long.is_empty() {
opts.push(flag.long.to_string());
if !opts.is_empty() {
opts.push(' ');
}
opts.push_str(flag.long);
}
if let Some(short) = flag.short {
opts.push(format!("-{}", short));
if !opts.is_empty() {
opts.push(' ');
}
opts.push('-');
opts.push(short);
}
}

let mut cmds = Vec::new();
let mut cmds = String::new();
for subcmd in &cmd.commands {
cmds.push(subcmd.name.to_string());
if !cmds.is_empty() {
cmds.push(' ');
}
cmds.push_str(subcmd.name);
}

if !opts.is_empty() {
writeln!(out, " opts=\"{}\"", opts.join(" ")).unwrap();
writeln!(out, " opts=\"{}\"", opts).unwrap();
}
if !cmds.is_empty() {
writeln!(out, " cmds=\"{}\"", cmds.join(" ")).unwrap();
writeln!(out, " cmds=\"{}\"", cmds).unwrap();
}

if !opts.is_empty() || !cmds.is_empty() {
writeln!(out, " case \"${{prev}}\" in").unwrap();
for flag in cmd.flags {
if let FlagInfoKind::Option { .. } = flag.kind {
let mut prev_matches = Vec::new();
let mut prev_matches = String::new();
if !flag.long.is_empty() {
prev_matches.push(flag.long.to_string());
prev_matches.push_str(flag.long);
}
if let Some(short) = flag.short {
prev_matches.push(format!("-{}", short));
if !prev_matches.is_empty() {
prev_matches.push_str(" | ");
}
prev_matches.push('-');
prev_matches.push(short);
}
if !prev_matches.is_empty() {
writeln!(out, " {})", prev_matches.join(" | ")).unwrap();
writeln!(out, " {})", prev_matches).unwrap();
writeln!(out, " COMPREPLY=()").unwrap();
writeln!(out, " return 0").unwrap();
writeln!(out, " ;;").unwrap();
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