use std::fmt::{Display, Formatter, Result};
use std::result::Result as StdResult;
use std::rc::Rc;
use vec_map::VecMap;
use Arg;
use args::{AnyArg, DispOrder};
use args::settings::{ArgFlags, ArgSettings};
#[allow(missing_debug_implementations)]
#[doc(hidden)]
pub struct PosBuilder<'n, 'e> {
pub name: &'n str,
pub help: Option<&'e str>,
pub requires: Option<Vec<&'e str>>,
pub blacklist: Option<Vec<&'e str>>,
pub possible_vals: Option<Vec<&'e str>>,
pub index: u64,
pub num_vals: Option<u64>,
pub max_vals: Option<u64>,
pub min_vals: Option<u64>,
pub val_names: Option<VecMap<&'e str>>,
pub validator: Option<Rc<Fn(String) -> StdResult<(), String>>>,
pub overrides: Option<Vec<&'e str>>,
pub settings: ArgFlags,
pub val_delim: Option<char>,
pub default_val: Option<&'n str>,
pub disp_ord: usize,
}
impl<'n, 'e> Default for PosBuilder<'n, 'e> {
fn default() -> Self {
PosBuilder {
name: "",
help: None,
requires: None,
blacklist: None,
possible_vals: None,
index: 0,
num_vals: None,
min_vals: None,
max_vals: None,
val_names: None,
validator: None,
overrides: None,
settings: ArgFlags::new(),
val_delim: Some(','),
default_val: None,
disp_ord: 999,
}
}
}
impl<'n, 'e> PosBuilder<'n, 'e> {
pub fn new(name: &'n str, idx: u64) -> Self {
PosBuilder {
name: name,
index: idx,
..Default::default()
}
}
pub fn from_arg(a: &Arg<'n, 'e>, idx: u64, reqs: &mut Vec<&'e str>) -> Self {
debug_assert!(a.short.is_none() || a.long.is_none(),
format!("Argument \"{}\" has conflicting requirements, both index() and short(), \
or long(), were supplied", a.name));
let mut pb = PosBuilder {
name: a.name,
index: idx,
num_vals: a.num_vals,
min_vals: a.min_vals,
max_vals: a.max_vals,
val_names: a.val_names.clone(),
blacklist: a.blacklist.clone(),
overrides: a.overrides.clone(),
requires: a.requires.clone(),
possible_vals: a.possible_vals.clone(),
help: a.help,
val_delim: a.val_delim,
settings: a.settings,
default_val: a.default_val,
disp_ord: a.disp_ord,
..Default::default()
};
if a.max_vals.is_some()
|| a.min_vals.is_some()
|| (a.num_vals.is_some() && a.num_vals.unwrap() > 1) {
pb.settings.set(ArgSettings::Multiple);
}
if let Some(ref p) = a.validator {
pb.validator = Some(p.clone());
}
if a.is_set(ArgSettings::Required) {
if let Some(ref areqs) = a.requires {
for r in areqs { reqs.push(*r); }
}
}
pb
}
}
impl<'n, 'e> Display for PosBuilder<'n, 'e> {
fn fmt(&self, f: &mut Formatter) -> Result {
if self.settings.is_set(ArgSettings::Required) {
if let Some(ref names) = self.val_names {
try!(write!(f, "{}", names.values().map(|n| format!("<{}>", n)).collect::<Vec<_>>().join(" ")));
} else {
try!(write!(f, "<{}>", self.name));
}
} else {
if let Some(ref names) = self.val_names {
try!(write!(f, "{}", names.values().map(|n| format!("[{}]", n)).collect::<Vec<_>>().join(" ")));
} else {
try!(write!(f, "[{}]", self.name));
}
}
if self.settings.is_set(ArgSettings::Multiple) && self.val_names.is_none() {
try!(write!(f, "..."));
}
Ok(())
}
}
impl<'n, 'e> Clone for PosBuilder<'n, 'e> {
fn clone(&self) -> Self {
PosBuilder {
name: self.name,
help: self.help,
blacklist: self.blacklist.clone(),
overrides: self.overrides.clone(),
requires: self.requires.clone(),
settings: self.settings,
disp_ord: self.disp_ord,
num_vals: self.num_vals,
min_vals: self.min_vals,
max_vals: self.max_vals,
val_names: self.val_names.clone(),
val_delim: self.val_delim,
possible_vals: self.possible_vals.clone(),
default_val: self.default_val,
validator: self.validator.clone(),
index: self.index,
}
}
}
impl<'n, 'e> AnyArg<'n, 'e> for PosBuilder<'n, 'e> {
fn name(&self) -> &'n str { self.name }
fn overrides(&self) -> Option<&[&'e str]> { self.overrides.as_ref().map(|o| &o[..]) }
fn requires(&self) -> Option<&[&'e str]> { self.requires.as_ref().map(|o| &o[..]) }
fn blacklist(&self) -> Option<&[&'e str]> { self.blacklist.as_ref().map(|o| &o[..]) }
fn val_names(&self) -> Option<&VecMap<&'e str>> { self.val_names.as_ref() }
fn is_set(&self, s: ArgSettings) -> bool { self.settings.is_set(s) }
fn set(&mut self, s: ArgSettings) { self.settings.set(s) }
fn has_switch(&self) -> bool { false }
fn max_vals(&self) -> Option<u64> { self.max_vals }
fn num_vals(&self) -> Option<u64> { self.num_vals }
fn possible_vals(&self) -> Option<&[&'e str]> { self.possible_vals.as_ref().map(|o| &o[..]) }
fn validator(&self) -> Option<&Rc<Fn(String) -> StdResult<(), String>>> {
self.validator.as_ref()
}
fn min_vals(&self) -> Option<u64> { self.min_vals }
fn short(&self) -> Option<char> { None }
fn long(&self) -> Option<&'e str> { None }
fn val_delim(&self) -> Option<char> { self.val_delim }
fn takes_value(&self) -> bool { true }
fn help(&self) -> Option<&'e str> { self.help }
fn default_val(&self) -> Option<&'n str> { self.default_val }
fn longest_filter(&self) -> bool { true }
}
impl<'n, 'e> DispOrder for PosBuilder<'n, 'e> {
fn disp_ord(&self) -> usize { self.disp_ord }
}
#[cfg(test)]
mod test {
use super::PosBuilder;
use args::settings::ArgSettings;
use vec_map::VecMap;
#[test]
fn display_mult() {
let mut p = PosBuilder::new("pos", 1);
p.settings.set(ArgSettings::Multiple);
assert_eq!(&*format!("{}", p), "[pos]...");
}
#[test]
fn display_required() {
let mut p2 = PosBuilder::new("pos", 1);
p2.settings.set(ArgSettings::Required);
assert_eq!(&*format!("{}", p2), "<pos>");
}
#[test]
fn display_val_names() {
let mut p2 = PosBuilder::new("pos", 1);
let mut vm = VecMap::new();
vm.insert(0, "file1");
vm.insert(1, "file2");
p2.val_names = Some(vm);
assert_eq!(&*format!("{}", p2), "[file1] [file2]");
}
#[test]
fn display_val_names_req() {
let mut p2 = PosBuilder::new("pos", 1);
p2.settings.set(ArgSettings::Required);
let mut vm = VecMap::new();
vm.insert(0, "file1");
vm.insert(1, "file2");
p2.val_names = Some(vm);
assert_eq!(&*format!("{}", p2), "<file1> <file2>");
}
}