1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136

use crate::convert::Localizer;
use crate::replace::{replace_env, ConfError};
use crate::{Filter, Getter};
use std::path::{Path, PathBuf};
use toml::Value;

pub fn load_toml<S: AsRef<str>>(s: S) -> Result<Localizer<Value>, ConfError> {
    let fname = replace_env(s.as_ref())?;
    let fcont = std::fs::read_to_string(&fname)?;
    let v = fcont.parse::<Value>()?;
    let fpar = PathBuf::from(PathBuf::from(fname).parent().unwrap_or(Path::new("./")));

    Ok(Localizer::new(v, fpar))
}

pub fn load_first_toml<S: AsRef<str>, IT: IntoIterator<Item = S>>(
    a: Option<&str>,
    i: IT,
) -> Result<Localizer<Value>, ConfError> {
    if let Some(m) = a {
        println!("config selected = {} ", m);
        match load_toml(m) {
            Ok(v) => return Ok(v),
            Err(e) => {
                println!("Could not load selected file {:?}", e);
                return Err(e);
            }
        }
    }
    for s in i {
        match load_toml(s) {
            Ok(m) => return Ok(m),
            Err(_) => continue,
        }
    }
    Err("could not load".into())
}

fn dig<S: AsRef<str>, I: Iterator<Item = S>>(v: &Value, mut i: I) -> Option<&Value> {
    match i.next() {
        None => Some(v),
        Some(s) => match v {
            Value::Table(t) => dig(t.get(s.as_ref())?, i),
            Value::Array(a) => dig(a.get(s.as_ref().parse::<usize>().ok()?)?, i),
            _ => None,
        },
    }
}

impl<'a> Getter<'a> for Value {
    type Out = String;
    type Iter = std::vec::IntoIter<String>;
    fn bool_flag<S: AsRef<str>>(&self, s: S, f: Filter) -> bool {
        (&self).bool_flag(s, f)
    }

    fn value<S: AsRef<str>>(&self, s: S, f: Filter) -> Option<String> {
        match (&self).value(s, f)? {
            Value::String(s) => Some(s.clone()),
            Value::Integer(i) => Some(i.to_string()),
            Value::Boolean(i) => Some(i.to_string()),
            Value::Float(f) => Some(f.to_string()),
            Value::Datetime(f) => Some(f.to_string()),
            _ => None,
        }
    }

    fn values<S: AsRef<str>>(&self, s: S, f: Filter) -> Option<std::vec::IntoIter<String>> {
        let res: Vec<String> = (&self)
            .values(s, f)?
            .filter_map(|v| v.as_str().map(|vr| vr.to_string()))
            .collect();
        Some(res.into_iter())
    }
}
impl<'a> Getter<'a> for &'a Value {
    type Out = &'a Value;
    type Iter = std::slice::Iter<'a, Value>;
    fn bool_flag<S: AsRef<str>>(&self, s: S, f: Filter) -> bool {
        if f != Filter::Conf {
            return false;
        }
        match dig(self, s.as_ref().split(".")) {
            Some(v) => v.as_bool().unwrap_or(false),
            None => false,
        }
    }

    fn value<S: AsRef<str>>(&self, s: S, f: Filter) -> Option<&'a Value> {
        if f != Filter::Conf {
            return None;
        }
        let r = dig(self, s.as_ref().split("."))?;
        Some(r)
    }

    fn values<S: AsRef<str>>(&self, s: S, f: Filter) -> Option<std::slice::Iter<'a, Value>> {
        if f != Filter::Conf {
            return None;
        }

        let v = dig(self, s.as_ref().split("."))?;

        if let Value::Array(a) = v {
            return Some(a.into_iter());
        }
        None
    }
}

#[cfg(test)]
mod tomltests {
    use super::*;
    #[test]
    fn test_load() {
        let t: Value = "[a.b.c]\ncar=\"red\"".parse().unwrap();
        let r = (&&t).value("a.b.c.car", Filter::Conf).unwrap();
        assert_eq!(r.as_str().unwrap(), "red");

        let t: Value = "[[a.b]]\ncar=\"red\"\n[[a.b]]\ncar=\"green\""
            .parse()
            .unwrap();
        let r = (&&t).value("a.b.1.car", Filter::Conf).unwrap();
        assert_eq!(r.as_str().unwrap(), "green");
    }

    #[test]
    fn test_iter() {
        let t: Value = "[a.b]\ncar=[\"red\",\"green\"]".parse().unwrap();
        let mut r = (&&t)
            .values("a.b.car", Filter::Conf)
            .expect("Could not get values");
        assert_eq!(r.next().unwrap().as_str().unwrap(), "red");
        assert_eq!(r.next().unwrap().as_str().unwrap(), "green");
    }
}