1 files changed, 229 insertions, 0 deletions
diff --git a/clap/src/args/arg_builder/positional.rs b/clap/src/args/arg_builder/positional.rs
new file mode 100644
index 0000000..43fdca4
--- /dev/null
+++ b/clap/src/args/arg_builder/positional.rs
@@ -0,0 +1,229 @@
+// Std
+use std::borrow::Cow;
+use std::fmt::{Display, Formatter, Result};
+use std::rc::Rc;
+use std::result::Result as StdResult;
+use std::ffi::{OsStr, OsString};
+use std::mem;
+
+// Internal
+use Arg;
+use args::{AnyArg, ArgSettings, Base, DispOrder, Valued};
+use INTERNAL_ERROR_MSG;
+use map::{self, VecMap};
+
+#[allow(missing_debug_implementations)]
+#[doc(hidden)]
+#[derive(Clone, Default)]
+pub struct PosBuilder<'n, 'e>
+where
+    'n: 'e,
+{
+    pub b: Base<'n, 'e>,
+    pub v: Valued<'n, 'e>,
+    pub index: u64,
+}
+
+impl<'n, 'e> PosBuilder<'n, 'e> {
+    pub fn new(name: &'n str, idx: u64) -> Self {
+        PosBuilder {
+            b: Base::new(name),
+            index: idx,
+            ..Default::default()
+        }
+    }
+
+    pub fn from_arg_ref(a: &Arg<'n, 'e>, idx: u64) -> Self {
+        let mut pb = PosBuilder {
+            b: Base::from(a),
+            v: Valued::from(a),
+            index: idx,
+        };
+        if a.v.max_vals.is_some() || a.v.min_vals.is_some()
+            || (a.v.num_vals.is_some() && a.v.num_vals.unwrap() > 1)
+        {
+            pb.b.settings.set(ArgSettings::Multiple);
+        }
+        pb
+    }
+
+    pub fn from_arg(mut a: Arg<'n, 'e>, idx: u64) -> Self {
+        if a.v.max_vals.is_some() || a.v.min_vals.is_some()
+            || (a.v.num_vals.is_some() && a.v.num_vals.unwrap() > 1)
+        {
+            a.b.settings.set(ArgSettings::Multiple);
+        }
+        PosBuilder {
+            b: mem::replace(&mut a.b, Base::default()),
+            v: mem::replace(&mut a.v, Valued::default()),
+            index: idx,
+        }
+    }
+
+    pub fn multiple_str(&self) -> &str {
+        let mult_vals = self.v
+            .val_names
+            .as_ref()
+            .map_or(true, |names| names.len() < 2);
+        if self.is_set(ArgSettings::Multiple) && mult_vals {
+            "..."
+        } else {
+            ""
+        }
+    }
+
+    pub fn name_no_brackets(&self) -> Cow<str> {
+        debugln!("PosBuilder::name_no_brackets;");
+        let mut delim = String::new();
+        delim.push(if self.is_set(ArgSettings::RequireDelimiter) {
+            self.v.val_delim.expect(INTERNAL_ERROR_MSG)
+        } else {
+            ' '
+        });
+        if let Some(ref names) = self.v.val_names {
+            debugln!("PosBuilder:name_no_brackets: val_names={:#?}", names);
+            if names.len() > 1 {
+                Cow::Owned(
+                    names
+                        .values()
+                        .map(|n| format!("<{}>", n))
+                        .collect::<Vec<_>>()
+                        .join(&*delim),
+                )
+            } else {
+                Cow::Borrowed(names.values().next().expect(INTERNAL_ERROR_MSG))
+            }
+        } else {
+            debugln!("PosBuilder:name_no_brackets: just name");
+            Cow::Borrowed(self.b.name)
+        }
+    }
+}
+
+impl<'n, 'e> Display for PosBuilder<'n, 'e> {
+    fn fmt(&self, f: &mut Formatter) -> Result {
+        let mut delim = String::new();
+        delim.push(if self.is_set(ArgSettings::RequireDelimiter) {
+            self.v.val_delim.expect(INTERNAL_ERROR_MSG)
+        } else {
+            ' '
+        });
+        if let Some(ref names) = self.v.val_names {
+            write!(
+                f,
+                "{}",
+                names
+                    .values()
+                    .map(|n| format!("<{}>", n))
+                    .collect::<Vec<_>>()
+                    .join(&*delim)
+            )?;
+        } else {
+            write!(f, "<{}>", self.b.name)?;
+        }
+        if self.b.settings.is_set(ArgSettings::Multiple)
+            && (self.v.val_names.is_none() || self.v.val_names.as_ref().unwrap().len() == 1)
+        {
+            write!(f, "...")?;
+        }
+
+        Ok(())
+    }
+}
+
+impl<'n, 'e> AnyArg<'n, 'e> for PosBuilder<'n, 'e> {
+    fn name(&self) -> &'n str { self.b.name }
+    fn overrides(&self) -> Option<&[&'e str]> { self.b.overrides.as_ref().map(|o| &o[..]) }
+    fn requires(&self) -> Option<&[(Option<&'e str>, &'n str)]> {
+        self.b.requires.as_ref().map(|o| &o[..])
+    }
+    fn blacklist(&self) -> Option<&[&'e str]> { self.b.blacklist.as_ref().map(|o| &o[..]) }
+    fn required_unless(&self) -> Option<&[&'e str]> { self.b.r_unless.as_ref().map(|o| &o[..]) }
+    fn val_names(&self) -> Option<&VecMap<&'e str>> { self.v.val_names.as_ref() }
+    fn is_set(&self, s: ArgSettings) -> bool { self.b.settings.is_set(s) }
+    fn set(&mut self, s: ArgSettings) { self.b.settings.set(s) }
+    fn has_switch(&self) -> bool { false }
+    fn max_vals(&self) -> Option<u64> { self.v.max_vals }
+    fn val_terminator(&self) -> Option<&'e str> { self.v.terminator }
+    fn num_vals(&self) -> Option<u64> { self.v.num_vals }
+    fn possible_vals(&self) -> Option<&[&'e str]> { self.v.possible_vals.as_ref().map(|o| &o[..]) }
+    fn validator(&self) -> Option<&Rc<Fn(String) -> StdResult<(), String>>> {
+        self.v.validator.as_ref()
+    }
+    fn validator_os(&self) -> Option<&Rc<Fn(&OsStr) -> StdResult<(), OsString>>> {
+        self.v.validator_os.as_ref()
+    }
+    fn min_vals(&self) -> Option<u64> { self.v.min_vals }
+    fn short(&self) -> Option<char> { None }
+    fn long(&self) -> Option<&'e str> { None }
+    fn val_delim(&self) -> Option<char> { self.v.val_delim }
+    fn takes_value(&self) -> bool { true }
+    fn help(&self) -> Option<&'e str> { self.b.help }
+    fn long_help(&self) -> Option<&'e str> { self.b.long_help }
+    fn default_vals_ifs(&self) -> Option<map::Values<(&'n str, Option<&'e OsStr>, &'e OsStr)>> {
+        self.v.default_vals_ifs.as_ref().map(|vm| vm.values())
+    }
+    fn default_val(&self) -> Option<&'e OsStr> { self.v.default_val }
+    fn env<'s>(&'s self) -> Option<(&'n OsStr, Option<&'s OsString>)> {
+        self.v
+            .env
+            .as_ref()
+            .map(|&(key, ref value)| (key, value.as_ref()))
+    }
+    fn longest_filter(&self) -> bool { true }
+    fn aliases(&self) -> Option<Vec<&'e str>> { None }
+}
+
+impl<'n, 'e> DispOrder for PosBuilder<'n, 'e> {
+    fn disp_ord(&self) -> usize { self.index as usize }
+}
+
+impl<'n, 'e> PartialEq for PosBuilder<'n, 'e> {
+    fn eq(&self, other: &PosBuilder<'n, 'e>) -> bool { self.b == other.b }
+}
+
+#[cfg(test)]
+mod test {
+    use args::settings::ArgSettings;
+    use super::PosBuilder;
+    use map::VecMap;
+
+    #[test]
+    fn display_mult() {
+        let mut p = PosBuilder::new("pos", 1);
+        p.b.settings.set(ArgSettings::Multiple);
+
+        assert_eq!(&*format!("{}", p), "<pos>...");
+    }
+
+    #[test]
+    fn display_required() {
+        let mut p2 = PosBuilder::new("pos", 1);
+        p2.b.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.v.val_names = Some(vm);
+
+        assert_eq!(&*format!("{}", p2), "<file1> <file2>");
+    }
+
+    #[test]
+    fn display_val_names_req() {
+        let mut p2 = PosBuilder::new("pos", 1);
+        p2.b.settings.set(ArgSettings::Required);
+        let mut vm = VecMap::new();
+        vm.insert(0, "file1");
+        vm.insert(1, "file2");
+        p2.v.val_names = Some(vm);
+
+        assert_eq!(&*format!("{}", p2), "<file1> <file2>");
+    }
+}