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// -- lib.rs -- //! This crate is so simple. Just see the following example: //! ```rust //! let help_long = "help".to_string(); //! let config_long = "config".to_string(); //! let list_long = "list".to_string(); //! let shell_long = "shell".to_string(); //! let run_long = "run".to_string(); //! let rows_long = "rows".to_string(); //! let row_id_long = "row-id".to_string(); //! let dict_long = "dictionary".to_string(); //! //! let longopts = &[ //! Opt::new( //! Some(help_long.clone()), //! help_long.chars().next(), //! HasArg::NoArgument, //! "help and version information", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(config_long.clone()), //! config_long.chars().next(), //! HasArg::NoArgument, //! "config file name with full path", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(list_long.clone()), //! list_long.chars().next(), //! HasArg::NoArgument, //! "list all dictionaries", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(shell_long.clone()), //! shell_long.chars().next(), //! HasArg::NoArgument, //! "run as a Lua shell", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(run_long.clone()), //! run_long.chars().next(), //! HasArg::RequiredArgument, //! "run a Lua script file", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(rows_long.clone()), //! None, //! HasArg::NoArgument, //! "query rows count in a dictionary", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(row_id_long.clone()), //! None, //! HasArg::RequiredArgument, //! "query a row information in a dictionary", //! ) //! .map_err(|e| on_the_spot!(e))?, //! Opt::new( //! Some(dict_long.clone()), //! dict_long.chars().next(), //! HasArg::RequiredArgument, //! "dictionary name used to query", //! ) //! .map_err(|e| on_the_spot!(e))?, //! ]; //! let opts = getopt_long(longopts).map_err(|e| on_the_spot!(e))?; //! //! let config = { //! let mut short = config_long.clone(); //! short.split_off(1); //! let config_name = if let Some(config) = opts.args.get(&short) { //! config.clone() //! } else if let Some(config) = opts.args.get(&config_long) { //! config.clone() //! } else { //! "/Users/xt/.dict/config.lua".to_string() //! }; //! Config::load(&config_name)? //! }; //! //! let action = loop { //! let mut short = help_long.clone(); //! short.split_off(1); //! if opts.args.get(&short).is_some() || opts.args.get(&help_long).is_some() { //! usage( //! "rdict", //! "query a word information from some remote dictionaries.", //! "0.1.0", //! longopts, //! ); //! break Action::Quit; //! } //! //! short = list_long.clone(); //! short.split_off(1); //! if opts.args.get(&short).is_some() || opts.args.get(&list_long).is_some() { //! break Action::List; //! } //! //! short = shell_long.clone(); //! short.split_off(1); //! if opts.args.get(&short).is_some() || opts.args.get(&shell_long).is_some() { //! break Action::Shell; //! } //! //! short = run_long.clone(); //! short.split_off(1); //! if let Some(script) = opts.args.get(&short) { //! break Action::Run {script: script.clone()} //! } else if let Some(script) = opts.args.get(&run_long) { //! break Action::Run {script: script.clone()} //! } //! //! short = dict_long.clone(); //! short.split_off(1); //! let dict_name = if let Some(dict) = opts.args.get(&short) { //! dict.clone() //! } else if let Some(dict) = opts.args.get(&dict_long) { //! dict.clone() //! } else { //! config.default_dictionary_name()? //! }; //! //! if opts.args.get(&rows_long).is_some() { //! break Action::Rows { dict: dict_name }; //! } //! //! if let Some(id) = opts.args.get(&row_id_long) { //! let id: u32 = id //! .parse() //! .map_err(|e: <u32 as std::str::FromStr>::Err| on_the_spot!(e))?; //! break Action::RowId { //! id, //! dict: dict_name, //! }; //! } //! //! break Action::Query { //! words: opts.operands.iter().map(|v| v.clone()).collect(), //! dict: dict_name, //! }; //! }; //! //! action.do_with_config(config).await //! ``` //! //! In a shell, key: //! ```sh //! ./hello -h //! ``` //! //! show as below: //!```sh //! hello [options [args]] [operands] //! Options: //! -h, --help help and version information //! -c, --config config file name with full path //! -l, --list list all dictionaries //! -s, --shell run as a Lua shell. //! -r, --run =Arg run a Lua script file. //! --rows query rows count in a dictionary //! --row-id =Arg query a row information in a diction //! ary //! -d, --dictionary =Arg dictionary name used to query //!``` //! //! Just so. It is very simple and useful. mod getopt_long; mod my_glibc; // -- pub use getopt_long::{getopt_long, usage, HasArg, Opt, OptError, OptResult, Arguments};