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#![allow(unused_mut, dead_code)] use std::fmt::{ Debug, Formatter, Result }; use crate::{ Command, Argument, ArgumentType, Application }; impl Debug for Argument { fn fmt(&self, f: &mut Formatter) -> Result { match self.ty { ArgumentType::RequiredSingle => write!(f, "<{}>", self.name), ArgumentType::RequiredMultiple => write!(f, "<{}...>", self.name), ArgumentType::OptionalSingle => write!(f, "[{}]", self.name), ArgumentType::OptionalMultiple => write!(f, "[{}...]", self.name), } } } impl Debug for Command { fn fmt(&self, f: &mut Formatter) -> Result { let mut max_len = 0; let mut arg_formats = String::new(); let mut lens = vec![]; for opt in &self.opts { let arg_len = opt.arg.as_ref().map_or(0, |a| format!("{:?}", a).len()); let used_space = opt.long.len() + opt.short.len() + arg_len; if used_space > max_len { max_len = used_space; } lens.insert(0, used_space); } for arg in &self.args { arg_formats.push_str(&format!("{:?} ", arg)); } if self.opts.len() > 0 { write!(f, "Usage: {} {}[options]\n\n", self.name, arg_formats)?; } else { write!(f, "Usage: {} {}\n\n", self.name, arg_formats)?; } write!(f, "{}\n\n", self.desc.clone().unwrap_or_default())?; write!(f, "Options: \n")?; for opt in &self.opts { let used_space = lens.pop().unwrap_or_default(); let arg_format = opt.arg.as_ref().map_or(String::new(), |a| format!("{:?}", a)); write!(f, " {}", format!("-{}, --{} {} {}", opt.short, opt.long, arg_format, " ".repeat(max_len - used_space)))?; write!(f, " {}\n", opt.desc.clone().unwrap_or_default())?; } write!(f, "\n") } } impl Debug for Application { fn fmt(&self, f: &mut Formatter) -> Result { let mut max_len = 0; let mut lens = vec![]; for opt in &self.opts { let arg_len = opt.arg.as_ref().map_or(0, |a| format!("{:?}", a).len()); let used_space = opt.long.len() + opt.short.len() + arg_len; if used_space > max_len { max_len = used_space; } lens.insert(0, used_space); } write!(f, "Usage: {}", self.name)?; if self.cmds.len() > 0 { write!(f, " <command>")?; } if self.opts.len() > 0 { write!(f, " [options]")?; } write!(f, "\n\n{}\n\n", self.desc)?; write!(f, "Global options: \n")?; for opt in &self.opts { let used_space = lens.pop().unwrap_or_default(); let arg_format = opt.arg.as_ref().map_or(String::new(), |a| format!("{:?}", a)); write!(f, " {}", format!("-{}, --{} {} {}", opt.short, opt.long, arg_format, " ".repeat(max_len - used_space)))?; write!(f, " {}\n", opt.desc.clone().unwrap_or_default())?; } write!(f, "\nCommands:\n")?; max_len = 0; for cmd in &self.cmds { let mut used_space = cmd.name.len() + 13; for arg in &cmd.args { used_space += format!("{:?}", arg).len() + 1; } if used_space > max_len { max_len = used_space; } lens.insert(0, used_space); } for cmd in &self.cmds { let used_space = lens.pop().unwrap_or_default(); write!(f, " {} ", cmd.name)?; for arg in &cmd.args { write!(f, "{:?} ", arg)?; } if cmd.opts.len() > 0 { write!(f, "[options]")?; } write!(f, "{} {}\n", " ".repeat(max_len - used_space), cmd.desc.clone().unwrap_or_default())?; } write!(f, "\nSee '{} <command> --help' for more information on a specific command\n", self.name) } }