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Merge pull request #177 from Vinatorul/issue176

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Added overrides to support conflicts in POSIX compatible manner
This commit is contained in:
Kevin K. 2015-08-19 21:23:24 -04:00
commit 70e48d1357
6 changed files with 468 additions and 135 deletions
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394
src/app.rs
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@ -1,4 +1,4 @@
use std::collections::{BTreeMap, BTreeSet, HashSet, HashMap, VecDeque}; use std::collections::{BTreeMap, BTreeSet, HashMap, VecDeque};
use std::env; use std::env;
use std::io::{self, BufRead, Write}; use std::io::{self, BufRead, Write};
use std::path::Path; use std::path::Path;
@ -53,7 +53,7 @@ enum DidYouMeanMessageStyle {
EnumValue, EnumValue,
} }
/// Some application options /// Application level settings, which affect how `App` operates
pub enum AppSettings { pub enum AppSettings {
/// Allows subcommands to override all requirements of the parent (this command). For example /// Allows subcommands to override all requirements of the parent (this command). For example
/// if you had a subcommand or even top level application which had a required arguments that /// if you had a subcommand or even top level application which had a required arguments that
@ -245,10 +245,10 @@ pub struct App<'a, 'v, 'ab, 'u, 'h, 'ar> {
subcommands: BTreeMap<String, App<'a, 'v, 'ab, 'u, 'h, 'ar>>, subcommands: BTreeMap<String, App<'a, 'v, 'ab, 'u, 'h, 'ar>>,
help_short: Option<char>, help_short: Option<char>,
version_short: Option<char>, version_short: Option<char>,
required: HashSet<&'ar str>, required: Vec<&'ar str>,
short_list: HashSet<char>, short_list: Vec<char>,
long_list: HashSet<&'ar str>, long_list: Vec<&'ar str>,
blacklist: HashSet<&'ar str>, blacklist: Vec<&'ar str>,
usage_str: Option<&'u str>, usage_str: Option<&'u str>,
bin_name: Option<String>, bin_name: Option<String>,
usage: Option<String>, usage: Option<String>,
@ -266,7 +266,8 @@ pub struct App<'a, 'v, 'ab, 'u, 'h, 'ar> {
global_ver: bool, global_ver: bool,
// None = not set, Some(true) set for all children, Some(false) = disable version // None = not set, Some(true) set for all children, Some(false) = disable version
versionless_scs: Option<bool>, versionless_scs: Option<bool>,
unified_help: bool unified_help: bool,
overrides: Vec<&'ar str>,
} }
impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
@ -300,12 +301,12 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
needs_subcmd_help: true, needs_subcmd_help: true,
help_short: None, help_short: None,
version_short: None, version_short: None,
required: HashSet::new(), required: vec![],
short_list: HashSet::new(), short_list: vec![],
long_list: HashSet::new(), long_list: vec![],
usage_str: None, usage_str: None,
usage: None, usage: None,
blacklist: HashSet::new(), blacklist: vec![],
bin_name: None, bin_name: None,
groups: HashMap::new(), groups: HashMap::new(),
subcmds_neg_reqs: false, subcmds_neg_reqs: false,
@ -317,7 +318,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
help_on_no_sc: false, help_on_no_sc: false,
global_ver: false, global_ver: false,
versionless_scs: None, versionless_scs: None,
unified_help: false unified_help: false,
overrides: vec![]
} }
} }
@ -799,25 +801,20 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
if let Some(grp) = a.group { if let Some(grp) = a.group {
let ag = self.groups.entry(grp).or_insert(ArgGroup::with_name(grp)); let ag = self.groups.entry(grp).or_insert(ArgGroup::with_name(grp));
ag.args.insert(a.name); ag.args.insert(a.name);
// Leaving this commented out for now...I'm not sure if having a required argument in
// a in required group is bad...It has it's uses
// assert!(!a.required,
// format!("Arguments may not be required AND part of a required group\n\n\t{} is \
// required and also part of the {} group\n\n\tEither remove the requirement \
// from the group, or the argument.", a.name, grp));
} }
if let Some(s) = a.short { if let Some(s) = a.short {
if self.short_list.contains(&s) { if self.short_list.contains(&s) {
panic!("Argument short must be unique\n\n\t-{} is already in use", s); panic!("Argument short must be unique\n\n\t-{} is already in use", s);
} else { } else {
self.short_list.insert(s); self.short_list.push(s);
} }
} }
if let Some(l) = a.long { if let Some(l) = a.long {
if self.long_list.contains(l) { self.long_list.dedup();
if self.long_list.contains(&l) {
panic!("Argument long must be unique\n\n\t--{} is already in use", l); panic!("Argument long must be unique\n\n\t--{} is already in use", l);
} else { } else {
self.long_list.insert(l); self.long_list.push(l);
} }
if l == "help" { if l == "help" {
self.needs_long_help = false; self.needs_long_help = false;
@ -826,7 +823,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
if a.required { if a.required {
self.required.insert(a.name); self.required.push(a.name);
} }
if a.index.is_some() || (a.short.is_none() && a.long.is_none()) { if a.index.is_some() || (a.short.is_none() && a.long.is_none()) {
let i = if a.index.is_none() { let i = if a.index.is_none() {
@ -872,7 +869,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
help: a.help, help: a.help,
global: a.global, global: a.global,
empty_vals: a.empty_vals, empty_vals: a.empty_vals,
validator: None validator: None,
overrides: None
}; };
if pb.min_vals.is_some() && !pb.multiple { if pb.min_vals.is_some() && !pb.multiple {
panic!("Argument \"{}\" does not allow multiple values, yet it is expecting {} \ panic!("Argument \"{}\" does not allow multiple values, yet it is expecting {} \
@ -885,21 +883,30 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
// Check if there is anything in the blacklist (mutually excludes list) and add any // Check if there is anything in the blacklist (mutually excludes list) and add any
// values // values
if let Some(ref bl) = a.blacklist { if let Some(ref bl) = a.blacklist {
let mut bhs = HashSet::new(); let mut bhs = vec![];
// without derefing n = &&str // without derefing n = &&str
for n in bl { bhs.insert(*n); } for n in bl { bhs.push(*n); }
bhs.dedup();
pb.blacklist = Some(bhs); pb.blacklist = Some(bhs);
} }
if let Some(ref or) = a.overrides {
let mut bhs = vec![];
// without derefing n = &&str
for n in or { bhs.push(*n); }
bhs.dedup();
pb.overrides = Some(bhs);
}
// Check if there is anything in the requires list and add any values // Check if there is anything in the requires list and add any values
if let Some(ref r) = a.requires { if let Some(ref r) = a.requires {
let mut rhs = HashSet::new(); let mut rhs = vec![];
// without derefing n = &&str // without derefing n = &&str
for n in r { for n in r {
rhs.insert(*n); rhs.push(*n);
if pb.required { if pb.required {
self.required.insert(*n); self.required.push(*n);
} }
} }
rhs.dedup();
pb.requires = Some(rhs); pb.requires = Some(rhs);
} }
// Check if there is anything in the possible values and add those as well // Check if there is anything in the possible values and add those as well
@ -935,7 +942,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
requires: None, requires: None,
required: a.required, required: a.required,
empty_vals: a.empty_vals, empty_vals: a.empty_vals,
validator: None validator: None,
overrides: None
}; };
if let Some(ref vec) = ob.val_names { if let Some(ref vec) = ob.val_names {
ob.num_vals = Some(vec.len() as u8); ob.num_vals = Some(vec.len() as u8);
@ -951,9 +959,10 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
// Check if there is anything in the blacklist (mutually excludes list) and add any // Check if there is anything in the blacklist (mutually excludes list) and add any
// values // values
if let Some(ref bl) = a.blacklist { if let Some(ref bl) = a.blacklist {
let mut bhs = HashSet::new(); let mut bhs = vec![];
// without derefing n = &&str // without derefing n = &&str
for n in bl { bhs.insert(*n); } for n in bl { bhs.push(*n); }
bhs.dedup();
ob.blacklist = Some(bhs); ob.blacklist = Some(bhs);
} }
if let Some(ref p) = a.validator { if let Some(ref p) = a.validator {
@ -961,16 +970,24 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
// Check if there is anything in the requires list and add any values // Check if there is anything in the requires list and add any values
if let Some(ref r) = a.requires { if let Some(ref r) = a.requires {
let mut rhs = HashSet::new(); let mut rhs = vec![];
// without derefing n = &&str // without derefing n = &&str
for n in r { for n in r {
rhs.insert(*n); rhs.push(*n);
if ob.required { if ob.required {
self.required.insert(*n); self.required.push(*n);
} }
} }
rhs.dedup();
ob.requires = Some(rhs); ob.requires = Some(rhs);
} }
if let Some(ref or) = a.overrides {
let mut bhs = vec![];
// without derefing n = &&str
for n in or { bhs.push(*n); }
bhs.dedup();
ob.overrides = Some(bhs);
}
// Check if there is anything in the possible values and add those as well // Check if there is anything in the possible values and add those as well
if let Some(ref p) = a.possible_vals { if let Some(ref p) = a.possible_vals {
let mut phs = BTreeSet::new(); let mut phs = BTreeSet::new();
@ -1008,22 +1025,32 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
global: a.global, global: a.global,
multiple: a.multiple, multiple: a.multiple,
requires: None, requires: None,
overrides: None
}; };
// Check if there is anything in the blacklist (mutually excludes list) and add any // Check if there is anything in the blacklist (mutually excludes list) and add any
// values // values
if let Some(ref bl) = a.blacklist { if let Some(ref bl) = a.blacklist {
let mut bhs = HashSet::new(); let mut bhs = vec![];
// without derefing n = &&str // without derefing n = &&str
for n in bl { bhs.insert(*n); } for n in bl { bhs.push(*n); }
bhs.dedup();
fb.blacklist = Some(bhs); fb.blacklist = Some(bhs);
} }
// Check if there is anything in the requires list and add any values // Check if there is anything in the requires list and add any values
if let Some(ref r) = a.requires { if let Some(ref r) = a.requires {
let mut rhs = HashSet::new(); let mut rhs = vec![];
// without derefing n = &&str // without derefing n = &&str
for n in r { rhs.insert(*n); } for n in r { rhs.push(*n); }
rhs.dedup();
fb.requires = Some(rhs); fb.requires = Some(rhs);
} }
if let Some(ref or) = a.overrides {
let mut bhs = vec![];
// without derefing n = &&str
for n in or { bhs.push(*n); }
bhs.dedup();
fb.overrides = Some(bhs);
}
self.flags.insert(a.name, fb); self.flags.insert(a.name, fb);
} }
if a.global { if a.global {
@ -1139,15 +1166,15 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
/// # ; /// # ;
pub fn arg_group(mut self, group: ArgGroup<'ar, 'ar>) -> Self { pub fn arg_group(mut self, group: ArgGroup<'ar, 'ar>) -> Self {
if group.required { if group.required {
self.required.insert(group.name); self.required.push(group.name);
if let Some(ref reqs) = group.requires { if let Some(ref reqs) = group.requires {
for r in reqs { for r in reqs {
self.required.insert(r); self.required.push(r);
} }
} }
if let Some(ref bl) = group.conflicts { if let Some(ref bl) = group.conflicts {
for b in bl { for b in bl {
self.blacklist.insert(b); self.blacklist.push(b);
} }
} }
} }
@ -1795,9 +1822,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
/// .get_matches(); /// .get_matches();
/// ``` /// ```
pub fn get_matches(self) -> ArgMatches<'ar, 'ar> { pub fn get_matches(self) -> ArgMatches<'ar, 'ar> {
let args: Vec<_> = env::args().collect(); // Start the parsing
self.get_matches_from(env::args())
self.get_matches_from(args)
} }
/// Starts the parsing process. Called on top level parent app **ONLY** then recursively calls /// Starts the parsing process. Called on top level parent app **ONLY** then recursively calls
@ -1824,12 +1850,20 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
-> ArgMatches<'ar, 'ar> -> ArgMatches<'ar, 'ar>
where I: IntoIterator<Item=T>, where I: IntoIterator<Item=T>,
T: AsRef<str> { T: AsRef<str> {
// Verify all positional assertions pass
self.verify_positionals(); self.verify_positionals();
// If there are global arguments, we need to propgate them down to subcommands before
// parsing incase we run into a subcommand
self.propogate_globals(); self.propogate_globals();
let mut matches = ArgMatches::new(); let mut matches = ArgMatches::new();
let mut it = itr.into_iter(); let mut it = itr.into_iter();
// Get the name of the program (argument 1 of env::args()) and determine the actual file
// that was used to execute the program. This is because a program called
// ./target/release/my_prog -a
// will have two arguments, './target/release/my_prog', '-a' but we don't want to display
// the full path when displaying help messages and such
if let Some(name) = it.next() { if let Some(name) = it.next() {
let p = Path::new(name.as_ref()); let p = Path::new(name.as_ref());
if let Some(f) = p.file_name() { if let Some(f) = p.file_name() {
@ -1840,6 +1874,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
} }
// do the real parsing
self.get_matches_with(&mut matches, &mut it); self.get_matches_with(&mut matches, &mut it);
matches matches
@ -1875,7 +1911,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
for (_, p) in self.positionals_idx.iter_mut().rev() { for (_, p) in self.positionals_idx.iter_mut().rev() {
if found { if found {
p.required = true; p.required = true;
self.required.insert(p.name); self.required.push(p.name);
continue; continue;
} }
if p.required { if p.required {
@ -1886,6 +1922,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
fn propogate_globals(&mut self) { fn propogate_globals(&mut self) {
for (_,sc) in self.subcommands.iter_mut() { for (_,sc) in self.subcommands.iter_mut() {
// We have to create a new scope in order to tell rustc the borrow of `sc` is done and
// to recursively call this method
{ {
for a in self.global_args.iter() { for a in self.global_args.iter() {
sc.add_arg(a.into()); sc.add_arg(a.into());
@ -1921,6 +1959,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
fn get_matches_with<I, T>(&mut self, matches: &mut ArgMatches<'ar, 'ar>, it: &mut I) fn get_matches_with<I, T>(&mut self, matches: &mut ArgMatches<'ar, 'ar>, it: &mut I)
where I: Iterator<Item=T>, where I: Iterator<Item=T>,
T: AsRef<str> { T: AsRef<str> {
// First we create the `--help` and `--version` arguments and add them if necessary
self.create_help_and_version(); self.create_help_and_version();
let mut pos_only = false; let mut pos_only = false;
@ -1931,14 +1971,26 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
while let Some(arg) = it.next() { while let Some(arg) = it.next() {
let arg_slice = arg.as_ref(); let arg_slice = arg.as_ref();
let mut skip = false; let mut skip = false;
// we need to know if we're parsing a new argument, or the value of previous argument,
// perhaps one with multiple values such as --option val1 val2. We determine when to
// stop parsing multiple values by finding a '-'
let new_arg = if arg_slice.starts_with("-") { let new_arg = if arg_slice.starts_with("-") {
// If we come to a single `-` it's a value, not a new argument...this happens when
// one wants to use the Unix standard of '-' to mean 'stdin'
!(arg_slice.len() == 1) !(arg_slice.len() == 1)
} else { } else {
false false
}; };
// pos_only is determined later, and set true when a user uses the Unix standard of '--'
// to mean only positionals follow
if !pos_only && !new_arg && !self.subcommands.contains_key(arg_slice) { if !pos_only && !new_arg && !self.subcommands.contains_key(arg_slice) {
// Check to see if parsing a value from an option
if let Some(nvo) = needs_val_of { if let Some(nvo) = needs_val_of {
// get the OptBuilder so we can check the settings
if let Some(ref opt) = self.opts.get(nvo) { if let Some(ref opt) = self.opts.get(nvo) {
// Check the possible values
if let Some(ref p_vals) = opt.possible_vals { if let Some(ref p_vals) = opt.possible_vals {
if !p_vals.is_empty() { if !p_vals.is_empty() {
if !p_vals.contains(arg_slice) { if !p_vals.contains(arg_slice) {
@ -1947,6 +1999,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
} }
// Check the required number of values
if let Some(num) = opt.num_vals { if let Some(num) = opt.num_vals {
if let Some(ref ma) = matches.args.get(opt.name) { if let Some(ref ma) = matches.args.get(opt.name) {
if let Some(ref vals) = ma.values { if let Some(ref vals) = ma.values {
@ -1966,6 +2019,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
// if it's an empty value, and we don't allow that, report the error
if !opt.empty_vals && if !opt.empty_vals &&
matches.args.contains_key(opt.name) && matches.args.contains_key(opt.name) &&
arg_slice.is_empty() { arg_slice.is_empty() {
@ -1975,8 +2029,18 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
Some(matches.args.keys() Some(matches.args.keys()
.map(|k| *k).collect())); .map(|k| *k).collect()));
} }
// save the value to matched option
if let Some(ref mut o) = matches.args.get_mut(opt.name) { if let Some(ref mut o) = matches.args.get_mut(opt.name) {
// Options have values, so we can unwrap() // if it's multiple; the occurrences are increased when originally found
o.occurrences = if opt.multiple {
o.occurrences + 1
} else {
skip = true;
1
};
// Options always have values, even if it's empty, so we can unwrap()
if let Some(ref mut vals) = o.values { if let Some(ref mut vals) = o.values {
if let Some(ref vtor) = opt.validator { if let Some(ref vtor) = opt.validator {
if let Err(e) = vtor(arg_slice.to_owned()) { if let Err(e) = vtor(arg_slice.to_owned()) {
@ -1985,19 +2049,21 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
Some(vec![opt.name])); Some(vec![opt.name]));
} }
} }
// Values must be inserted in order...the user may care about that!
let len = vals.len() as u8 + 1; let len = vals.len() as u8 + 1;
vals.insert(len, arg_slice.to_owned()); vals.insert(len, arg_slice.to_owned());
}
// if it's multiple the occurrences are increased when originall found // Now that the values have been added, we can ensure we haven't gone
o.occurrences = if opt.multiple { // over any max_limits, or if we've reached the exact number of values
o.occurrences + 1 // we can stop parsing values, and go back to arguments.
} else { //
skip = true; // For example, if we define an option with exactly 2 values and the
1 // users passes:
}; // $ my_prog --option val1 val2 pos1
if let Some(ref vals) = o.values { // we stop parsing values of --option after val2, if the user hadn't
let len = vals.len() as u8; // defined an exact or max value, pos1 would be parsed as a value of
// --option
if let Some(num) = opt.max_vals { if let Some(num) = opt.max_vals {
if len != num { continue } if len != num { continue }
} else if let Some(num) = opt.num_vals { } else if let Some(num) = opt.num_vals {
@ -2009,9 +2075,11 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
val_counter = 0; val_counter = 0;
} }
} else { } else {
// if we need more values, get the next value
if len != num { continue } if len != num { continue }
} }
} else if !skip { } else if !skip {
// get the next value from the iterator
continue continue
} }
} }
@ -2020,10 +2088,13 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
} }
// if we're done getting values from an option, get the next arg from the iterator
if skip { if skip {
needs_val_of = None; needs_val_of = None;
continue; continue;
} else if let Some(ref name) = needs_val_of { } else if let Some(ref name) = needs_val_of {
// We've reached more values for an option than it possibly accepts
if let Some(ref o) = self.opts.get(name) { if let Some(ref o) = self.opts.get(name) {
if !o.multiple { if !o.multiple {
self.report_error( self.report_error(
@ -2035,17 +2106,23 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
if arg_slice.starts_with("--") && !pos_only { if arg_slice.starts_with("--") && !pos_only {
if arg_slice.len() == 2 { if arg_slice.len() == 2 {
// The user has passed '--' which means only positional args follow no matter
// what they start with
pos_only = true; pos_only = true;
continue; continue;
} }
// Single flag, or option long version
// This arg is either an option or flag using a long (i.e. '--something')
needs_val_of = self.parse_long_arg(matches, arg_slice); needs_val_of = self.parse_long_arg(matches, arg_slice);
} else if arg_slice.starts_with("-") && arg_slice.len() != 1 && ! pos_only { } else if arg_slice.starts_with("-") && arg_slice.len() != 1 && ! pos_only {
// Multiple or single flag(s), or single option (could be '-SbG' or '-o')
needs_val_of = self.parse_short_arg(matches, arg_slice); needs_val_of = self.parse_short_arg(matches, arg_slice);
} else { } else {
// Positional or Subcommand // Positional or Subcommand
//
// If the user pased `--` we don't check for subcommands, because the argument they // If the user pased `--` we don't check for subcommands, because the argument they
// may be trying to pass might match a subcommand name // may be trying to pass might match a subcommand name
if !pos_only { if !pos_only {
@ -2055,9 +2132,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
subcmd_name = Some(arg_slice.to_owned()); subcmd_name = Some(arg_slice.to_owned());
break; break;
} } else if let Some(candidate_subcommand) = did_you_mean(arg_slice,
if let Some(candidate_subcommand) = did_you_mean(arg_slice,
self.subcommands.keys()) { self.subcommands.keys()) {
self.report_error( self.report_error(
format!("The subcommand '{}' isn't valid\n\tDid you mean '{}' ?\n\n\ format!("The subcommand '{}' isn't valid\n\tDid you mean '{}' ?\n\n\
@ -2073,6 +2148,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
// Did the developer even define any valid positionals? Since we reached this far,
// it's not a subcommand
if self.positionals_idx.is_empty() { if self.positionals_idx.is_empty() {
self.report_error( self.report_error(
format!("Found argument '{}', but {} wasn't expecting any", format!("Found argument '{}', but {} wasn't expecting any",
@ -2080,13 +2157,14 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
self.bin_name.clone().unwrap_or(self.name.clone())), self.bin_name.clone().unwrap_or(self.name.clone())),
true, true,
Some(matches.args.keys().map(|k| *k).collect())); Some(matches.args.keys().map(|k| *k).collect()));
} } else if let Some(p) = self.positionals_idx.get(&pos_counter) {
// If we find that an argument requires a positiona, we need to update all the // Make sure this one doesn't conflict with anything
// previous positionals too. This will denote where to start self.blacklist.dedup();
// let mut req_pos_from_name = None; if self.blacklist.contains(&p.name) {
if let Some(p) = self.positionals_idx.get(&pos_counter) { // we shouldn't need to remove this arg...since it should be matched yet
if self.blacklist.contains(p.name) { // anyways
matches.args.remove(p.name); // matches.args.remove(p.name);
self.report_error(format!("The argument '{}' cannot be used with {}", self.report_error(format!("The argument '{}' cannot be used with {}",
Format::Warning(p.to_string()), Format::Warning(p.to_string()),
match self.blacklisted_from(p.name, &matches) { match self.blacklisted_from(p.name, &matches) {
@ -2098,6 +2176,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
Some(matches.args.keys().map(|k| *k).collect())); Some(matches.args.keys().map(|k| *k).collect()));
} }
if let Some(ref p_vals) = p.possible_vals { if let Some(ref p_vals) = p.possible_vals {
if !p_vals.is_empty() { if !p_vals.is_empty() {
if !p_vals.contains(arg_slice) { if !p_vals.contains(arg_slice) {
@ -2106,6 +2185,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
} }
} }
// Have we made the update yet? // Have we made the update yet?
let mut done = false; let mut done = false;
if p.multiple { if p.multiple {
@ -2141,12 +2221,27 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
vals.insert(len, arg_slice.to_owned()); vals.insert(len, arg_slice.to_owned());
} }
} }
} else { } else {
// Only increment the positional counter if it doesn't allow multiples // Only increment the positional counter if it doesn't allow multiples
pos_counter += 1; pos_counter += 1;
} }
// Was an update made, or is this the first occurrence? // Was an update made, or is this the first occurrence?
if !done { if !done {
self.overrides.dedup();
if self.overrides.contains(&p.name) {
if let Some(name) = self.overriden_from(p.name, matches) {
matches.args.remove(&*name);
remove_override!(self, &*name);
}
}
if let Some(ref or) = p.overrides {
for pa in or {
matches.args.remove(pa);
remove_override!(self, pa);
self.overrides.push(pa);
}
}
let mut bm = BTreeMap::new(); let mut bm = BTreeMap::new();
if !p.empty_vals && arg_slice.is_empty() { if !p.empty_vals && arg_slice.is_empty() {
self.report_error(format!("The argument '{}' does not allow empty \ self.report_error(format!("The argument '{}' does not allow empty \
@ -2168,27 +2263,29 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
occurrences: 1, occurrences: 1,
values: Some(bm), values: Some(bm),
}); });
}
if let Some(ref bl) = p.blacklist { if let Some(ref bl) = p.blacklist {
for name in bl { for name in bl {
self.blacklist.insert(name); self.blacklist.push(name);
self.required.remove(name); vec_remove!(self.required, name);
} }
} }
self.required.remove(p.name); // Because of the macro call, we have to create a temp variable
let pname = &p.name;
vec_remove!(self.required, pname);
if let Some(ref reqs) = p.requires { if let Some(ref reqs) = p.requires {
// Add all required args which aren't already found in matches to the // Add all required args which aren't already found in matches to the
// final required list // final required list
for n in reqs { for n in reqs {
if matches.args.contains_key(n) {continue;} if matches.args.contains_key(n) {continue;}
self.required.insert(n); self.required.push(n);
} }
} }
parse_group_reqs!(self, p); parse_group_reqs!(self, p);
}
} else { } else {
self.report_error(format!("The argument '{}' was found, but '{}' wasn't \ self.report_error(format!("The argument '{}' was found, but '{}' wasn't \
@ -2246,7 +2343,6 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
self.validate_blacklist(matches); self.validate_blacklist(matches);
self.validate_num_args(matches); self.validate_num_args(matches);
matches.usage = Some(self.create_usage(None)); matches.usage = Some(self.create_usage(None));
if let Some(sc_name) = subcmd_name { if let Some(sc_name) = subcmd_name {
@ -2320,14 +2416,14 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
for k in matches.args.keys() { for k in matches.args.keys() {
if let Some(f) = self.flags.get(k) { if let Some(f) = self.flags.get(k) {
if let Some(ref bl) = f.blacklist { if let Some(ref bl) = f.blacklist {
if bl.contains(name) { if bl.contains(&name) {
return Some(format!("{}", f)) return Some(format!("{}", f))
} }
} }
} }
if let Some(o) = self.opts.get(k) { if let Some(o) = self.opts.get(k) {
if let Some(ref bl) = o.blacklist { if let Some(ref bl) = o.blacklist {
if bl.contains(name) { if bl.contains(&name) {
return Some(format!("{}", o)) return Some(format!("{}", o))
} }
} }
@ -2335,7 +2431,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
if let Some(idx) = self.positionals_name.get(k) { if let Some(idx) = self.positionals_name.get(k) {
if let Some(pos) = self.positionals_idx.get(idx) { if let Some(pos) = self.positionals_idx.get(idx) {
if let Some(ref bl) = pos.blacklist { if let Some(ref bl) = pos.blacklist {
if bl.contains(name) { if bl.contains(&name) {
return Some(format!("{}", pos)) return Some(format!("{}", pos))
} }
} }
@ -2345,6 +2441,35 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
None None
} }
fn overriden_from(&self, name: &'ar str, matches: &ArgMatches) -> Option<&'ar str> {
for k in matches.args.keys() {
if let Some(f) = self.flags.get(k) {
if let Some(ref bl) = f.overrides {
if bl.contains(&name) {
return Some(f.name)
}
}
}
if let Some(o) = self.opts.get(k) {
if let Some(ref bl) = o.overrides {
if bl.contains(&name) {
return Some(o.name)
}
}
}
if let Some(idx) = self.positionals_name.get(k) {
if let Some(pos) = self.positionals_idx.get(idx) {
if let Some(ref bl) = pos.overrides {
if bl.contains(&name) {
return Some(pos.name)
}
}
}
}
}
None
}
fn create_help_and_version(&mut self) { fn create_help_and_version(&mut self) {
// name is "hclap_help" because flags are sorted by name // name is "hclap_help" because flags are sorted by name
if self.needs_long_help { if self.needs_long_help {
@ -2360,8 +2485,9 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
multiple: false, multiple: false,
global: false, global: false,
requires: None, requires: None,
overrides: None
}; };
self.long_list.insert("help"); self.long_list.push("help");
self.flags.insert("hclap_help", arg); self.flags.insert("hclap_help", arg);
} }
if self.needs_long_version if self.needs_long_version
@ -2380,8 +2506,9 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
multiple: false, multiple: false,
global: false, global: false,
requires: None, requires: None,
overrides: None
}; };
self.long_list.insert("version"); self.long_list.push("version");
self.flags.insert("vclap_version", arg); self.flags.insert("vclap_version", arg);
} }
if self.needs_subcmd_help && !self.subcommands.is_empty() { if self.needs_subcmd_help && !self.subcommands.is_empty() {
@ -2436,13 +2563,20 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
.filter(|&v| v.long.is_some()) .filter(|&v| v.long.is_some())
.filter(|&v| v.long.unwrap() == arg).nth(0) { .filter(|&v| v.long.unwrap() == arg).nth(0) {
// Ensure this option isn't on the master mutually excludes list // Ensure this option isn't on the master mutually excludes list
if self.blacklist.contains(v.name) { if self.blacklist.contains(&v.name) {
matches.args.remove(v.name); matches.args.remove(v.name);
self.report_error(format!("The argument '{}' cannot be used with one or more of \ self.report_error(format!("The argument '{}' cannot be used with one or more of \
the other specified arguments", Format::Warning(format!("--{}", arg))), the other specified arguments", Format::Warning(format!("--{}", arg))),
true, true,
Some(matches.args.keys().map(|k| *k).collect())); Some(matches.args.keys().map(|k| *k).collect()));
} }
if let Some(ref or) = v.overrides {
for pa in or {
matches.args.remove(pa);
remove_override!(self, pa);
self.overrides.push(pa);
}
}
if matches.args.contains_key(v.name) { if matches.args.contains_key(v.name) {
if !v.multiple { if !v.multiple {
@ -2512,15 +2646,16 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
}); });
} }
if let Some(ref bl) = v.blacklist { if let Some(ref bl) = v.blacklist {
for name in bl { for name in bl {
self.blacklist.insert(name); self.blacklist.push(name);
self.required.remove(name); vec_remove!(self.overrides, name);
vec_remove!(self.required, name);
} }
} }
self.required.remove(v.name); let vname = &v.name;
vec_remove!(self.required, vname);
if let Some(ref reqs) = v.requires { if let Some(ref reqs) = v.requires {
// Add all required args which aren't already found in matches to the // Add all required args which aren't already found in matches to the
@ -2528,7 +2663,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
for n in reqs { for n in reqs {
if matches.args.contains_key(n) { continue; } if matches.args.contains_key(n) { continue; }
self.required.insert(n); self.required.push(n);
} }
} }
@ -2544,7 +2679,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
.filter(|&v| v.long.is_some()) .filter(|&v| v.long.is_some())
.filter(|&v| v.long.unwrap() == arg).nth(0) { .filter(|&v| v.long.unwrap() == arg).nth(0) {
// Ensure this flag isn't on the mutually excludes list // Ensure this flag isn't on the mutually excludes list
if self.blacklist.contains(v.name) { self.blacklist.dedup();
if self.blacklist.contains(&v.name) {
matches.args.remove(v.name); matches.args.remove(v.name);
self.report_error(format!("The argument '{}' cannot be used with {}", self.report_error(format!("The argument '{}' cannot be used with {}",
Format::Warning(v.to_string()), Format::Warning(v.to_string()),
@ -2555,6 +2691,13 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
true, true,
Some(matches.args.keys().map(|k| *k).collect())); Some(matches.args.keys().map(|k| *k).collect()));
} }
if let Some(ref or) = v.overrides {
for pa in or {
matches.args.remove(pa);
remove_override!(self, pa);
self.overrides.push(pa);
}
}
// Make sure this isn't one being added multiple times if it doesn't suppor it // Make sure this isn't one being added multiple times if it doesn't suppor it
if matches.args.contains_key(v.name) && !v.multiple { if matches.args.contains_key(v.name) && !v.multiple {
@ -2580,13 +2723,21 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
// If this flag was requierd, remove it // If this flag was requierd, remove it
// .. even though Flags shouldn't be required // .. even though Flags shouldn't be required
self.required.remove(v.name); let vname = &v.name;
vec_remove!(self.required, vname);
// Add all of this flags "mutually excludes" list to the master list // Add all of this flags "mutually excludes" list to the master list
if let Some(ref ov) = v.overrides {
for name in ov {
self.overrides.push(name);
vec_remove!(self.required, name);
}
}
if let Some(ref bl) = v.blacklist { if let Some(ref bl) = v.blacklist {
for name in bl { for name in bl {
self.blacklist.insert(name); self.blacklist.push(name);
self.required.remove(name); vec_remove!(self.overrides, name);
vec_remove!(self.required, name);
} }
} }
@ -2595,7 +2746,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
for n in reqs { for n in reqs {
if matches.args.contains_key(n) { continue; } if matches.args.contains_key(n) { continue; }
self.required.insert(n); self.required.push(n);
} }
} }
@ -2677,7 +2828,8 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
.filter(|&v| v.short.is_some()) .filter(|&v| v.short.is_some())
.filter(|&v| v.short.unwrap() == arg_c).nth(0) { .filter(|&v| v.short.unwrap() == arg_c).nth(0) {
// Ensure this option isn't on the master mutually excludes list // Ensure this option isn't on the master mutually excludes list
if self.blacklist.contains(v.name) { self.blacklist.dedup();
if self.blacklist.contains(&v.name) {
matches.args.remove(v.name); matches.args.remove(v.name);
self.report_error(format!("The argument '{}' cannot be used with {}", self.report_error(format!("The argument '{}' cannot be used with {}",
Format::Warning(format!("-{}", arg)), Format::Warning(format!("-{}", arg)),
@ -2688,6 +2840,20 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
true, true,
Some(matches.args.keys().map(|k| *k).collect())); Some(matches.args.keys().map(|k| *k).collect()));
} }
self.overrides.dedup();
if self.overrides.contains(&v.name) {
if let Some(name) = self.overriden_from(v.name, matches) {
matches.args.remove(&*name);
remove_override!(self, &*name);
}
}
if let Some(ref or) = v.overrides {
for pa in or {
matches.args.remove(pa);
remove_override!(self, pa);
self.overrides.push(pa);
}
}
if matches.args.contains_key(v.name) { if matches.args.contains_key(v.name) {
if !v.multiple { if !v.multiple {
@ -2706,12 +2872,14 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
if let Some(ref bl) = v.blacklist { if let Some(ref bl) = v.blacklist {
for name in bl { for name in bl {
self.blacklist.insert(name); self.blacklist.push(name);
self.required.remove(name); vec_remove!(self.overrides, name);
vec_remove!(self.required, name);
} }
} }
self.required.remove(v.name); let vname = &v.name;
vec_remove!(self.required, vname);
if let Some(ref reqs) = v.requires { if let Some(ref reqs) = v.requires {
// Add all required args which aren't already found in matches to the // Add all required args which aren't already found in matches to the
@ -2719,7 +2887,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
for n in reqs { for n in reqs {
if matches.args.contains_key(n) { continue; } if matches.args.contains_key(n) { continue; }
self.required.insert(n); self.required.push(n);
} }
} }
@ -2738,11 +2906,12 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
} }
fn parse_single_short_flag(&mut self, matches: &mut ArgMatches<'ar, 'ar>, arg: char) -> bool { fn parse_single_short_flag(&mut self, matches: &mut ArgMatches<'ar, 'ar>, arg: char) -> bool {
for v in self.flags.values() if let Some(v) = self.flags.values()
.filter(|&v| v.short.is_some()) .filter(|&v| v.short.is_some())
.filter(|&v| v.short.unwrap() == arg) { .filter(|&v| v.short.unwrap() == arg).nth(0) {
// Ensure this flag isn't on the mutually excludes list // Ensure this flag isn't on the mutually excludes list
if self.blacklist.contains(v.name) { self.blacklist.dedup();
if self.blacklist.contains(&v.name) {
matches.args.remove(v.name); matches.args.remove(v.name);
self.report_error(format!("The argument '{}' cannot be used {}", self.report_error(format!("The argument '{}' cannot be used {}",
Format::Warning(format!("-{}", arg)), Format::Warning(format!("-{}", arg)),
@ -2754,6 +2923,24 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
true, true,
Some(matches.args.keys().map(|k| *k).collect())); Some(matches.args.keys().map(|k| *k).collect()));
} }
self.overrides.dedup();
debugln!("checking if {} is in overrides", v.name);
if self.overrides.contains(&v.name) {
debugln!("it is...");
debugln!("checking who defined it...");
if let Some(name) = self.overriden_from(v.name, matches) {
debugln!("found {}", name);
matches.args.remove(name);
remove_override!(self, name);
}
}
if let Some(ref or) = v.overrides {
for pa in or {
matches.args.remove(pa);
remove_override!(self, pa);
self.overrides.push(pa);
}
}
// Make sure this isn't one being added multiple times if it doesn't suppor it // Make sure this isn't one being added multiple times if it doesn't suppor it
if matches.args.contains_key(v.name) && !v.multiple { if matches.args.contains_key(v.name) && !v.multiple {
@ -2779,13 +2966,14 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
// If this flag was requierd, remove it // If this flag was requierd, remove it
// .. even though Flags shouldn't be required // .. even though Flags shouldn't be required
self.required.remove(v.name); let vname = &v.name;
vec_remove!(self.required, vname);
// Add all of this flags "mutually excludes" list to the master list
if let Some(ref bl) = v.blacklist { if let Some(ref bl) = v.blacklist {
for name in bl { for name in bl {
self.blacklist.insert(name); self.blacklist.push(name);
self.required.remove(name); vec_remove!(self.overrides, name);
vec_remove!(self.required, name);
} }
} }
@ -2794,7 +2982,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
for n in reqs { for n in reqs {
if matches.args.contains_key(n) { continue; } if matches.args.contains_key(n) { continue; }
self.required.insert(n); self.required.push(n);
} }
} }
@ -2948,7 +3136,6 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
fn validate_required(&self, matches: &ArgMatches<'ar, 'ar>) -> bool{ fn validate_required(&self, matches: &ArgMatches<'ar, 'ar>) -> bool{
for name in self.required.iter() { for name in self.required.iter() {
validate_reqs!(self, flags, matches, name); validate_reqs!(self, flags, matches, name);
validate_reqs!(self, opts, matches, name); validate_reqs!(self, opts, matches, name);
// because positions use different keys, we dont use the macro // because positions use different keys, we dont use the macro
@ -2998,4 +3185,5 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
None => (String::new(), None), None => (String::new(), None),
} }
} }
} }

58
src/args/arg.rs
View file

@ -93,7 +93,10 @@ pub struct Arg<'n, 'l, 'h, 'g, 'p, 'r> {
#[doc(hidden)] #[doc(hidden)]
pub global: bool, pub global: bool,
#[doc(hidden)] #[doc(hidden)]
pub validator: Option<Rc<Fn(String) -> Result<(), String>>> pub validator: Option<Rc<Fn(String) -> Result<(), String>>>,
/// A list of names for other arguments that *mutually override* this flag
#[doc(hidden)]
pub overrides: Option<Vec<&'r str>>
} }
impl<'n, 'l, 'h, 'g, 'p, 'r> Arg<'n, 'l, 'h, 'g, 'p, 'r> { impl<'n, 'l, 'h, 'g, 'p, 'r> Arg<'n, 'l, 'h, 'g, 'p, 'r> {
@ -135,7 +138,8 @@ impl<'n, 'l, 'h, 'g, 'p, 'r> Arg<'n, 'l, 'h, 'g, 'p, 'r> {
group: None, group: None,
global: false, global: false,
empty_vals: true, empty_vals: true,
validator: None validator: None,
overrides: None
} }
} }
@ -295,6 +299,7 @@ impl<'n, 'l, 'h, 'g, 'p, 'r> Arg<'n, 'l, 'h, 'g, 'p, 'r> {
global: false, global: false,
empty_vals: true, empty_vals: true,
validator: None, validator: None,
overrides: None,
} }
} }
@ -441,10 +446,52 @@ impl<'n, 'l, 'h, 'g, 'p, 'r> Arg<'n, 'l, 'h, 'g, 'p, 'r> {
self self
} }
/// Sets a mutually overridable argument by name. I.e. this argument and
/// the following argument will override each other in POSIX style
///
/// # Example
///
/// ```no_run
/// # use clap::{App, Arg};
/// # let myprog = App::new("myprog").arg(Arg::with_name("conifg")
/// .mutually_overrides_with("debug")
/// # ).get_matches();
pub fn mutually_overrides_with(mut self, name: &'r str) -> Self {
if let Some(ref mut vec) = self.overrides {
vec.push(name);
} else {
self.overrides = Some(vec![name]);
}
self
}
/// Sets a mutually overridable arguments by name. I.e. this argument and
/// the following argument will override each other in POSIX style
///
/// # Example
///
/// ```no_run
/// # use clap::{App, Arg};
/// let config_overrides = ["debug", "input"];
/// # let myprog = App::new("myprog").arg(Arg::with_name("conifg")
/// .mutually_overrides_with_all(&config_overrides)
/// # ).get_matches();
pub fn mutually_overrides_with_all<T, I>(mut self, names: I)
-> Self
where T: AsRef<str> + 'r,
I: IntoIterator<Item=&'r T> {
if let Some(ref mut vec) = self.overrides {
names.into_iter().map(|s| vec.push(s.as_ref())).collect::<Vec<_>>();
} else {
self.overrides = Some(names.into_iter().map(|s| s.as_ref()).collect::<Vec<_>>());
}
self
}
/// Sets an argument by name that is required when this one is presnet I.e. when /// Sets an argument by name that is required when this one is presnet I.e. when
/// using this argument, the following argument *must* be present. /// using this argument, the following argument *must* be present.
/// ///
/// **NOTE:** Mutually exclusive rules take precedence over being required /// **NOTE:** Mutually exclusive and override rules take precedence over being required
/// ///
/// ///
/// # Example /// # Example
@ -466,7 +513,7 @@ impl<'n, 'l, 'h, 'g, 'p, 'r> Arg<'n, 'l, 'h, 'g, 'p, 'r> {
/// Sets arguments by names that are required when this one is presnet I.e. when /// Sets arguments by names that are required when this one is presnet I.e. when
/// using this argument, the following arguments *must* be present. /// using this argument, the following arguments *must* be present.
/// ///
/// **NOTE:** Mutually exclusive rules take precedence over being required /// **NOTE:** Mutually exclusive and override rules take precedence over being required
/// by default. /// by default.
/// ///
/// ///
@ -817,7 +864,8 @@ impl<'n, 'l, 'h, 'g, 'p, 'r, 'z> From<&'z Arg<'n, 'l, 'h, 'g, 'p, 'r>> for Arg<'
group: a.group, group: a.group,
global: a.global, global: a.global,
empty_vals: a.empty_vals, empty_vals: a.empty_vals,
validator: a.validator.clone() validator: a.validator.clone(),
overrides: a.overrides.clone()
} }
} }
} }

8
src/args/argbuilder/flag.rs
View file

@ -1,4 +1,4 @@
use std::collections::HashSet; // use std::collections::HashSet;
use std::fmt::{ Display, Formatter, Result }; use std::fmt::{ Display, Formatter, Result };
pub struct FlagBuilder<'n> { pub struct FlagBuilder<'n> {
@ -16,15 +16,17 @@ pub struct FlagBuilder<'n> {
pub multiple: bool, pub multiple: bool,
/// A list of names for other arguments that /// A list of names for other arguments that
/// *may not* be used with this flag /// *may not* be used with this flag
pub blacklist: Option<HashSet<&'n str>>, pub blacklist: Option<Vec<&'n str>>,
/// A list of names of other arguments that /// A list of names of other arguments that
/// are *required* to be used when this /// are *required* to be used when this
/// flag is used /// flag is used
pub requires: Option<HashSet<&'n str>>, pub requires: Option<Vec<&'n str>>,
/// The short version (i.e. single character) /// The short version (i.e. single character)
/// of the argument, no preceding `-` /// of the argument, no preceding `-`
pub short: Option<char>, pub short: Option<char>,
pub global: bool, pub global: bool,
/// A list of names for other arguments that *mutually override* this flag
pub overrides: Option<Vec<&'n str>>
} }
impl<'n> Display for FlagBuilder<'n> { impl<'n> Display for FlagBuilder<'n> {

9
src/args/argbuilder/option.rs
View file

@ -1,5 +1,4 @@
use std::rc::Rc; use std::rc::Rc;
use std::collections::HashSet;
use std::collections::BTreeSet; use std::collections::BTreeSet;
use std::fmt::{ Display, Formatter, Result }; use std::fmt::{ Display, Formatter, Result };
use std::result::Result as StdResult; use std::result::Result as StdResult;
@ -16,7 +15,7 @@ pub struct OptBuilder<'n> {
/// Allow multiple occurrences of an option argument such as "-c some -c other" /// Allow multiple occurrences of an option argument such as "-c some -c other"
pub multiple: bool, pub multiple: bool,
/// A list of names for other arguments that *may not* be used with this flag /// A list of names for other arguments that *may not* be used with this flag
pub blacklist: Option<HashSet<&'n str>>, pub blacklist: Option<Vec<&'n str>>,
/// If this is a required by default when using the command line program /// If this is a required by default when using the command line program
/// i.e. a configuration file that's required for the program to function /// i.e. a configuration file that's required for the program to function
/// **NOTE:** required by default means, it is required *until* mutually /// **NOTE:** required by default means, it is required *until* mutually
@ -26,14 +25,16 @@ pub struct OptBuilder<'n> {
pub possible_vals: Option<BTreeSet<&'n str>>, pub possible_vals: Option<BTreeSet<&'n str>>,
/// A list of names of other arguments that are *required* to be used when /// A list of names of other arguments that are *required* to be used when
/// this flag is used /// this flag is used
pub requires: Option<HashSet<&'n str>>, pub requires: Option<Vec<&'n str>>,
pub num_vals: Option<u8>, pub num_vals: Option<u8>,
pub min_vals: Option<u8>, pub min_vals: Option<u8>,
pub max_vals: Option<u8>, pub max_vals: Option<u8>,
pub val_names: Option<Vec<&'n str>>, pub val_names: Option<Vec<&'n str>>,
pub empty_vals: bool, pub empty_vals: bool,
pub global: bool, pub global: bool,
pub validator: Option<Rc<Fn(String) -> StdResult<(), String>>> pub validator: Option<Rc<Fn(String) -> StdResult<(), String>>>,
/// A list of names for other arguments that *mutually override* this flag
pub overrides: Option<Vec<&'n str>>
} }
impl<'n> Display for OptBuilder<'n> { impl<'n> Display for OptBuilder<'n> {

9
src/args/argbuilder/positional.rs
View file

@ -1,4 +1,3 @@
use std::collections::HashSet;
use std::collections::BTreeSet; use std::collections::BTreeSet;
use std::fmt::{ Display, Formatter, Result }; use std::fmt::{ Display, Formatter, Result };
use std::result::Result as StdResult; use std::result::Result as StdResult;
@ -18,9 +17,9 @@ pub struct PosBuilder<'n> {
pub multiple: bool, pub multiple: bool,
/// A list of names of other arguments that are *required* to be used when /// A list of names of other arguments that are *required* to be used when
/// this flag is used /// this flag is used
pub requires: Option<HashSet<&'n str>>, pub requires: Option<Vec<&'n str>>,
/// A list of names for other arguments that *may not* be used with this flag /// A list of names for other arguments that *may not* be used with this flag
pub blacklist: Option<HashSet<&'n str>>, pub blacklist: Option<Vec<&'n str>>,
/// A list of possible values for this argument /// A list of possible values for this argument
pub possible_vals: Option<BTreeSet<&'n str>>, pub possible_vals: Option<BTreeSet<&'n str>>,
/// The index of the argument /// The index of the argument
@ -30,7 +29,9 @@ pub struct PosBuilder<'n> {
pub min_vals: Option<u8>, pub min_vals: Option<u8>,
pub empty_vals: bool, pub empty_vals: bool,
pub global: bool, pub global: bool,
pub validator: Option<Rc<Fn(String) -> StdResult<(), String>>> pub validator: Option<Rc<Fn(String) -> StdResult<(), String>>>,
/// A list of names for other arguments that *mutually override* this flag
pub overrides: Option<Vec<&'n str>>,
} }
impl<'n> Display for PosBuilder<'n> { impl<'n> Display for PosBuilder<'n> {

103
src/macros.rs
View file

@ -36,6 +36,80 @@ macro_rules! debug {
($fmt:expr, $($arg:tt)*) => (); ($fmt:expr, $($arg:tt)*) => ();
} }
// convienience macro for remove an item from a vec
macro_rules! vec_remove {
($vec:expr, $to_rem:ident) => {
{
let mut ix = None;
for (i, val) in $vec.iter().enumerate() {
if val == $to_rem {
ix = Some(i);
break;
}
}
if let Some(i) = ix {
$vec.remove(i);
}
}
}
}
macro_rules! remove_override {
($me:ident, $name:expr) => ({
if let Some(ref o) = $me.opts.get($name) {
if let Some(ref ora) = o.requires {
for a in ora {
vec_remove!($me.required, a);
}
}
if let Some(ref ora) = o.blacklist {
for a in ora {
vec_remove!($me.blacklist, a);
}
}
if let Some(ref ora) = o.overrides {
for a in ora {
vec_remove!($me.overrides, a);
}
}
} else if let Some(ref o) = $me.flags.get($name) {
if let Some(ref ora) = o.requires {
for a in ora {
vec_remove!($me.required, a);
}
}
if let Some(ref ora) = o.blacklist {
for a in ora {
vec_remove!($me.blacklist, a);
}
}
if let Some(ref ora) = o.overrides {
for a in ora {
vec_remove!($me.overrides, a);
}
}
} else if let Some(p) = $me.positionals_name.get($name) {
if let Some(ref o) = $me.positionals_idx.get(p) {
if let Some(ref ora) = o.requires {
for a in ora {
vec_remove!($me.required, a);
}
}
if let Some(ref ora) = o.blacklist {
for a in ora {
vec_remove!($me.blacklist, a);
}
}
if let Some(ref ora) = o.overrides {
for a in ora {
vec_remove!($me.overrides, a);
}
}
}
}
})
}
// De-duplication macro used in src/app.rs // De-duplication macro used in src/app.rs
macro_rules! print_opt_help { macro_rules! print_opt_help {
($me:ident, $opt:ident, $spc:expr) => { ($me:ident, $opt:ident, $spc:expr) => {
@ -72,15 +146,24 @@ macro_rules! parse_group_reqs {
let mut found = false; let mut found = false;
for name in ag.args.iter() { for name in ag.args.iter() {
if name == &$arg.name { if name == &$arg.name {
$me.required.remove(ag.name); let mut ix = None;
for (i, val) in $me.required.iter().enumerate() {
if val == &ag.name {
ix = Some(i);
break;
}
}
if let Some(i) = ix {
$me.required.remove(i);
}
if let Some(ref reqs) = ag.requires { if let Some(ref reqs) = ag.requires {
for r in reqs { for r in reqs {
$me.required.insert(r); $me.required.push(r);
} }
} }
if let Some(ref bl) = ag.conflicts { if let Some(ref bl) = ag.conflicts {
for b in bl { for b in bl {
$me.blacklist.insert(b); $me.blacklist.push(b);
} }
} }
found = true; found = true;
@ -90,8 +173,18 @@ macro_rules! parse_group_reqs {
if found { if found {
for name in ag.args.iter() { for name in ag.args.iter() {
if name == &$arg.name { continue } if name == &$arg.name { continue }
$me.required.remove(name); let mut ix = None;
$me.blacklist.insert(name); for (i, val) in $me.required.iter().enumerate() {
if val == name {
ix = Some(i);
break;
}
}
if let Some(i) = ix {
$me.required.remove(i);
}
$me.blacklist.push(name);
} }
} }
} }