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
137
138
139
140
141
142
143
144
145
146
147

extern crate regex;

use self::regex::Regex;
use super::{Validated, ValidatedWrapper};

use std::fmt::{self, Display, Debug, Formatter};

#[derive(Debug, PartialEq, Clone)]
pub enum Base32Error {
    IncorrectFormat,
}

pub type Base32Result = Result<Base32, Base32Error>;

pub struct Base32Validator {}

#[derive(Clone)]
pub struct Base32 {
    base32: String,
}

impl Base32 {
    pub fn get_base32(&self) -> &str {
        &self.base32
    }
}

impl Validated for Base32 {}

impl Debug for Base32 {
    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
        f.write_fmt(format_args!("Base32({})", self.base32))?;
        Ok(())
    }
}

impl Display for Base32 {
    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
        f.write_str(&self.base32)?;
        Ok(())
    }
}

impl PartialEq for Base32 {
    fn eq(&self, other: &Self) -> bool {
        self.base32.eq(&other.base32)
    }

    fn ne(&self, other: &Self) -> bool {
        self.base32.ne(&other.base32)
    }
}

impl Base32Validator {
    pub fn is_base32(&self, base32: &str) -> bool {
        self.parse_inner(base32).is_ok()
    }

    pub fn parse_string(&self, base32: String) -> Base32Result {
        let mut base32_inner = self.parse_inner(&base32)?;

        base32_inner.base32 = base32;

        Ok(base32_inner)
    }

    pub fn parse_str(&self, base32: &str) -> Base32Result {
        let mut base32_inner = self.parse_inner(base32)?;

        base32_inner.base32 = base32.to_string();

        Ok(base32_inner)
    }

    fn parse_inner(&self, base32: &str) -> Base32Result {
        let re = Regex::new("^([A-Z2-7]{8})*(([A-Z2-7]{8})|([A-Z2-7]{7}=)|([A-Z2-7]{5}===)|([A-Z2-7]{4}====)|([A-Z2-7]{2}======))$").unwrap();

        if re.is_match(base32) {
            Ok(Base32 {
                base32: String::new(),
            })
        } else {
            Err(Base32Error::IncorrectFormat)
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_base32_methods() {
        let base32 = "EB2GK43UEBWWK43TMFTWKCQK".to_string();

        let bv = Base32Validator {};

        let base32 = bv.parse_string(base32).unwrap();

        assert_eq!("EB2GK43UEBWWK43TMFTWKCQK", base32.get_base32());
    }

    #[test]
    fn test_base32_lv1() {
        let base32 = "EB2GK43UEBWWK43TMFTWKCQK".to_string();

        let bv = Base32Validator {};

        bv.parse_string(base32).unwrap();
    }
}

// Base32's wrapper struct is itself
impl ValidatedWrapper for Base32 {
    type Error = Base32Error;

    fn from_string(base32: String) -> Result<Self, Self::Error> {
        Base32::from_string(base32)
    }

    fn from_str(base32: &str) -> Result<Self, Self::Error> {
        Base32::from_str(base32)
    }
}

impl Base32 {
    pub fn from_string(base32: String) -> Result<Self, Base32Error> {
        let bv = Base32Validator {};

        bv.parse_string(base32)
    }

    pub fn from_str(base32: &str) -> Result<Self, Base32Error> {
        let bv = Base32Validator {};

        bv.parse_str(base32)
    }
}

#[cfg(feature = "rocketly")]
impl<'a> ::rocket::request::FromFormValue<'a> for Base32 {
    type Error = Base32Error;

    fn from_form_value(form_value: &'a ::rocket::http::RawStr) -> Result<Self, Self::Error> {
        Base32::from_str(form_value)
    }
}