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|
//! `Mingling` Example - Completion
//!
//! # How to Deploy
//! 1. Enable the `comp` feature
//! ```toml
//! mingling = { version = "0.1.5", features = [
//! "comp", // Enable this feature
//! "parser"
//! ] }
//! ```
//!
//! 2. Write `build.rs` to generate completion scripts at compile time
//! ```ignore
//! use mingling::build::{build_comp_scripts, build_comp_scripts_with_bin_name};
//! fn main() {
//! // Generate completion scripts for the current program, using the Cargo package name as the binary filename
//! build_comp_scripts(env!("CARGO_PKG_NAME")).unwrap();
//!
//! // Or, explicitly specify the binary filename
//! // build_comp_scripts("your_bin").unwrap();
//! }
//! ```
//!
//! 3. Write `main.rs`, adding completion logic for your command entry point
//! 4. Execute `cargo install --path ./`, then run the corresponding completion script in your shell
use mingling::{
EnumTag, Groupped, ShellContext, Suggest,
macros::{
chain, completion, dispatcher, gen_program, r_println, renderer, suggest, suggest_enum,
},
parser::{PickableEnum, Picker},
};
// Define dispatcher `FruitCommand`, directing subcommand "fruit" to `FruitEntry`
dispatcher!("fruit", FruitCommand => FruitEntry);
#[completion(FruitEntry)]
fn comp_fruit_command(ctx: &ShellContext) -> Suggest {
if ctx.filling_argument_first("--name") {
return suggest!();
}
if ctx.filling_argument_first("--type") {
return suggest_enum!(FruitType);
}
if ctx.typing_argument() {
return suggest! {
"--name": "Fruit name",
"--type": "Fruit type"
}
.strip_typed_argument(ctx);
}
return suggest!();
}
fn main() {
let mut program = ThisProgram::new();
program.with_dispatcher(CompletionDispatcher);
program.with_dispatcher(FruitCommand);
program.exec();
}
#[derive(Groupped)]
struct FruitInfo {
name: String,
fruit_type: FruitType,
}
#[derive(Default, Debug, EnumTag)]
enum FruitType {
#[enum_desc("It's Apple")]
#[enum_rename("apple")]
FruitApple,
#[enum_desc("It's Banana")]
#[enum_rename("banana")]
FruitBanana,
#[enum_desc("It's Cherry")]
#[enum_rename("cherry")]
FruitCherry,
#[enum_desc("It's Date")]
#[enum_rename("date")]
FruitDate,
#[enum_desc("It's Elderberry")]
#[enum_rename("elderberry")]
FruitElderberry,
#[default]
#[enum_rename("unknown")]
Unknown,
}
impl PickableEnum for FruitType {}
#[chain]
fn parse_fruit_info(prev: FruitEntry) -> ChainProcess<ThisProgram> {
let picker = Picker::from(prev.inner);
let (fruit_name, fruit_type) = picker.pick("--name").pick("--type").unpack();
let info = FruitInfo {
name: fruit_name,
fruit_type,
};
info.to_render()
}
#[renderer]
fn render_fruit(prev: FruitInfo) {
match (prev.name.is_empty(), prev.fruit_type) {
(true, FruitType::Unknown) => {
r_println!("Fruit name is empty and type is unknown");
}
(true, fruit_type) => {
r_println!("Fruit name is empty, Type: {:?}", fruit_type);
}
(false, FruitType::Unknown) => {
r_println!("Fruit name: {}, Type is unknown", prev.name);
}
(false, fruit_type) => {
r_println!("Fruit name: {}, Type: {:?}", prev.name, fruit_type);
}
}
}
gen_program!();
|
