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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182

use core::cmp::Ordering;

use alloc::fmt::{self, Display, Formatter};
use alloc::string::String;

use crate::{get_bytes, Byte, ByteUnit};

#[derive(Debug, Clone, Copy)]
/// Generated from the `get_appropriate_unit` and `get_adjusted_unit` methods of a `Byte` object.
pub struct AdjustedByte {
    pub(crate) value: f64,
    pub(crate) unit: ByteUnit,
}

impl AdjustedByte {
    /// Format the `AdjustedByte` object to string.
    ///
    /// # Examples
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte = Byte::from_unit(1555f64, ByteUnit::KB).unwrap();
    ///
    /// let result = byte.get_appropriate_unit(false).format(3);
    ///
    /// assert_eq!("1.555 MB", result);
    /// ```
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte = Byte::from_unit(1555.2f64, ByteUnit::B).unwrap();
    ///
    /// let result = byte.get_adjusted_unit(ByteUnit::B).format(3);
    ///
    /// assert_eq!("1555 B", result);
    /// ```
    #[inline]
    pub fn format(&self, fractional_digits: usize) -> String {
        if self.unit == ByteUnit::B {
            format!("{:.0} B", self.value)
        } else {
            format!("{:.*} {}", fractional_digits, self.value, self.unit)
        }
    }

    #[inline]
    pub fn get_value(&self) -> f64 {
        self.value
    }

    #[inline]
    pub fn get_unit(&self) -> ByteUnit {
        self.unit
    }

    /// Create a new `Byte` object from this `AdjustedByte` object. **Accuracy** should be taken care of.
    ///
    /// ## Examples
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte = Byte::from_str("123456789123456").unwrap();
    /// let adjusted_byte = byte.get_adjusted_unit(ByteUnit::GB);
    ///
    /// assert_eq!(123456.789123456, adjusted_byte.get_value());
    ///
    /// let byte = adjusted_byte.get_byte();
    /// let adjusted_byte = byte.get_adjusted_unit(ByteUnit::GB);
    ///
    /// assert_eq!(123456.789123, adjusted_byte.get_value());
    /// ```
    #[inline]
    pub fn get_byte(&self) -> Byte {
        let bytes = get_bytes(self.value, self.unit);

        Byte::from_bytes(bytes)
    }
}

impl Display for AdjustedByte {
    #[inline]
    fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
        if self.unit == ByteUnit::B {
            f.write_fmt(format_args!("{:.0} B", self.value))
        } else {
            f.write_fmt(format_args!("{:.2} ", self.value))?;

            Display::fmt(&self.unit, f)
        }
    }
}

impl PartialEq for AdjustedByte {
    /// Deal with the logical numeric equivalent.
    ///
    /// # Examples
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte1 = Byte::from_unit(1024f64, ByteUnit::KiB).unwrap();
    /// let byte2 = Byte::from_unit(1024f64, ByteUnit::KiB).unwrap();
    ///
    /// assert_eq!(byte1.get_appropriate_unit(false), byte2.get_appropriate_unit(true));
    /// ```
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte1 = Byte::from_unit(1024f64, ByteUnit::KiB).unwrap();
    /// let byte2 = Byte::from_unit(1f64, ByteUnit::MiB).unwrap();
    ///
    /// assert_eq!(byte1.get_appropriate_unit(true), byte2.get_appropriate_unit(false));
    /// ```
    #[inline]
    fn eq(&self, other: &AdjustedByte) -> bool {
        let s = self.get_byte();
        let o = other.get_byte();

        s.eq(&o)
    }
}

impl Eq for AdjustedByte {}

impl PartialOrd for AdjustedByte {
    #[inline]
    fn partial_cmp(&self, other: &AdjustedByte) -> Option<Ordering> {
        let s = self.get_byte();
        let o = other.get_byte();

        s.partial_cmp(&o)
    }
}

impl Ord for AdjustedByte {
    /// Deal with the logical numeric comparation.
    ///
    /// # Examples
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte1 = Byte::from_unit(1024f64, ByteUnit::KiB).unwrap();
    /// let byte2 = Byte::from_unit(1025f64, ByteUnit::KiB).unwrap();
    ///
    /// assert!(byte1.get_appropriate_unit(false) < byte2.get_appropriate_unit(true));
    /// ```
    ///
    /// ```
    /// extern crate byte_unit;
    ///
    /// use byte_unit::{Byte, ByteUnit};
    ///
    /// let byte1 = Byte::from_unit(1024f64, ByteUnit::KiB).unwrap();
    /// let byte2 = Byte::from_unit(1.01f64, ByteUnit::MiB).unwrap();
    ///
    /// assert!(byte1.get_appropriate_unit(true) < byte2.get_appropriate_unit(false));
    /// ```
    #[inline]
    fn cmp(&self, other: &AdjustedByte) -> Ordering {
        let s = self.get_byte();
        let o = other.get_byte();

        s.cmp(&o)
    }
}