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1
Cargo.toml
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@ -2,6 +2,7 @@
name = "humansize"
version = "1.1.1"
authors = ["Leopold Arkham <leopold.arkham@gmail.com>"]
edition = "2018"
readme = "README.md"
description = "A configurable crate to easily represent file sizes in a human-readable format."
repository = "https://github.com/LeopoldArkham/humansize"

201
LICENSE-APACHE.md Normal file
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@ -0,0 +1,201 @@
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41
src/file_size_opts/defaults.rs Normal file
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@ -0,0 +1,41 @@
use crate::file_size_opts::{FileSizeOpts, FixedAt, Kilo};
/// Options to display sizes in the binary format.
pub const BINARY: FileSizeOpts = FileSizeOpts {
divider: Kilo::Binary,
units: Kilo::Binary,
decimal_places: 2,
decimal_zeroes: 0,
fixed_at: FixedAt::No,
long_units: false,
space: true,
suffix: "",
allow_negative: false,
};
/// Options to display sizes in the decimal format.
pub const DECIMAL: FileSizeOpts = FileSizeOpts {
divider: Kilo::Decimal,
units: Kilo::Decimal,
decimal_places: 2,
decimal_zeroes: 0,
fixed_at: FixedAt::No,
long_units: false,
space: true,
suffix: "",
allow_negative: false,
};
/// Options to display sizes in the "conventional" format.
/// This 1024 as the value of the `Kilo`, but displays decimal-style units (`KB`, not `KiB`).
pub const CONVENTIONAL: FileSizeOpts = FileSizeOpts {
divider: Kilo::Binary,
units: Kilo::Decimal,
decimal_places: 2,
decimal_zeroes: 0,
fixed_at: FixedAt::No,
long_units: false,
space: true,
suffix: "",
allow_negative: false,
};

67
src/file_size_opts/mod.rs Normal file
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@ -0,0 +1,67 @@
//! Describes the struct that holds the options needed by the `file_size` method.
//! The three most common formats are provided as constants to be used easily
pub mod defaults;
pub use self::defaults::*;
#[derive(Debug, PartialEq, Copy, Clone)]
/// Holds the standard to use when displying the size.
pub enum Kilo {
/// The decimal scale and units
Decimal,
/// The binary scale and units
Binary,
}
#[derive(Debug, Copy, Clone)]
/// Forces a certain representation of the resulting file size.
pub enum FixedAt {
Byte,
Kilo,
Mega,
Giga,
Tera,
Peta,
Exa,
Zetta,
Yotta,
No,
}
/// Holds the options for the `file_size` method.
#[derive(Debug)]
pub struct FileSizeOpts {
/// The scale (binary/decimal) to divide against.
pub divider: Kilo,
/// The unit set to display.
pub units: Kilo,
/// The amount of decimal places to display if the decimal part is non-zero.
pub decimal_places: usize,
/// The amount of zeroes to display if the decimal part is zero.
pub decimal_zeroes: usize,
/// Whether to force a certain representation and if so, which one.
pub fixed_at: FixedAt,
/// Whether to use the full suffix or its abbreveation.
pub long_units: bool,
/// Whether to place a space between value and units.
pub space: bool,
/// An optional suffix which will be appended after the unit.
pub suffix: &'static str,
/// Whether to allow negative numbers as input. If `False`, negative values will return an error.
pub allow_negative: bool,
}
impl AsRef<FileSizeOpts> for FileSizeOpts {
fn as_ref(&self) -> &FileSizeOpts {
self
}
}

90
src/lib.rs
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@ -15,7 +15,6 @@
//! provided by the options module.
//!
//! ```rust
//! extern crate humansize;
//! use humansize::{FileSize, file_size_opts as options};
//!
//! fn main() {
@ -31,18 +30,8 @@
//! If you wish to customize the way sizes are displayed, you may create your own custom `FileSizeOpts` struct
//! and pass that to the method. See the `custom_options.rs` file in the example folder.
static SCALE_DECIMAL: [&str; 9] = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
static SCALE_DECIMAL_LONG: [&str; 9] = [
"Bytes",
"Kilobytes",
"Megabytes",
"Gigabytes",
"Terabytes",
"Petabytes",
"Exabytes",
"Zettabytes",
"Yottabytes",
];
pub mod file_size_opts;
mod scales;
static SCALE_BINARY: [&str; 9] = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"];
static SCALE_BINARY_LONG: [&str; 9] = [
@ -154,6 +143,7 @@ pub mod file_size_opts {
allow_negative: false,
};
}
/// The trait for the `file_size`method
pub trait FileSize {
/// Formats self according to the parameters in `opts`. `opts` can either be one of the
@ -210,10 +200,10 @@ macro_rules! impl_file_size_u {
}
let mut scale = match (opts.units, opts.long_units) {
(Kilo::Decimal, false) => SCALE_DECIMAL[scale_idx],
(Kilo::Decimal, true) => SCALE_DECIMAL_LONG[scale_idx],
(Kilo::Binary, false) => SCALE_BINARY[scale_idx],
(Kilo::Binary, true) => SCALE_BINARY_LONG[scale_idx]
(Kilo::Decimal, false) => scales::SCALE_DECIMAL[scale_idx],
(Kilo::Decimal, true) => scales::SCALE_DECIMAL_LONG[scale_idx],
(Kilo::Binary, false) => scales::SCALE_BINARY[scale_idx],
(Kilo::Binary, true) => scales::SCALE_BINARY_LONG[scale_idx]
};
// Remove "s" from the scale if the size is 1.x
@ -257,69 +247,3 @@ macro_rules! impl_file_size_i {
impl_file_size_u!(for usize u8 u16 u32 u64);
impl_file_size_i!(for isize i8 i16 i32 i64);
#[test]
fn test_sizes() {
assert_eq!(0.file_size(BINARY).unwrap(), "0 B");
assert_eq!(999.file_size(BINARY).unwrap(), "999 B");
assert_eq!(1000.file_size(BINARY).unwrap(), "1000 B");
assert_eq!(1000.file_size(DECIMAL).unwrap(), "1 KB");
assert_eq!(1023.file_size(BINARY).unwrap(), "1023 B");
assert_eq!(1023.file_size(DECIMAL).unwrap(), "1.02 KB");
assert_eq!(1024.file_size(BINARY).unwrap(), "1 KiB");
assert_eq!(1024.file_size(CONVENTIONAL).unwrap(), "1 KB");
let semi_custom_options = file_size_opts::FileSizeOpts {
space: false,
..file_size_opts::DECIMAL
};
assert_eq!(1000.file_size(semi_custom_options).unwrap(), "1KB");
let semi_custom_options2 = file_size_opts::FileSizeOpts {
suffix: "/s",
..file_size_opts::BINARY
};
assert_eq!(999.file_size(semi_custom_options2).unwrap(), "999 B/s");
let semi_custom_options3 = file_size_opts::FileSizeOpts {
suffix: "/day",
space: false,
..file_size_opts::DECIMAL
};
assert_eq!(1000.file_size(semi_custom_options3).unwrap(), "1KB/day");
let semi_custom_options4 = file_size_opts::FileSizeOpts {
fixed_at: file_size_opts::FixedAt::Byte,
..file_size_opts::BINARY
};
assert_eq!(2048.file_size(semi_custom_options4).unwrap(), "2048 B");
let semi_custom_options5 = file_size_opts::FileSizeOpts {
fixed_at: file_size_opts::FixedAt::Kilo,
..file_size_opts::BINARY
};
assert_eq!(
16584975.file_size(semi_custom_options5).unwrap(),
"16196.26 KiB"
);
let semi_custom_options6 = file_size_opts::FileSizeOpts {
fixed_at: file_size_opts::FixedAt::Tera,
decimal_places: 10,
..file_size_opts::BINARY
};
assert_eq!(
15284975.file_size(semi_custom_options6).unwrap(),
"0.0000139016 TiB"
);
let semi_custom_options7 = file_size_opts::FileSizeOpts {
allow_negative: true,
..file_size_opts::DECIMAL
};
assert_eq!(
(-5500).file_size(&semi_custom_options7).unwrap(),
"-5.50 KB"
);
assert_eq!((5500).file_size(&semi_custom_options7).unwrap(), "5.50 KB");
}

28
src/scales.rs Normal file
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@ -0,0 +1,28 @@
pub(crate) static SCALE_DECIMAL: [&str; 9] = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
pub(crate) static SCALE_DECIMAL_LONG: [&str; 9] = [
"Bytes",
"Kilobytes",
"Megabytes",
"Gigabytes",
"Terabytes",
"Petabytes",
"Exabytes",
"Zettabytes",
"Yottabytes",
];
pub(crate) static SCALE_BINARY: [&str; 9] =
["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"];
pub(crate) static SCALE_BINARY_LONG: [&str; 9] = [
"Bytes",
"Kibibytes",
"Mebibytes",
"Gibibytes",
"Tebibytes",
"Pebibytes",
"Exbibytes",
"Zebibytes",
"Yobibytes",
];

139
tests/test.rs Normal file
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@ -0,0 +1,139 @@
use humansize::{
file_size_opts::{self, BINARY, CONVENTIONAL, DECIMAL},
FileSize,
};
#[test]
fn test_sizes() {
assert_eq!(0.file_size(BINARY).unwrap(), "0 B");
assert_eq!(999.file_size(BINARY).unwrap(), "999 B");
assert_eq!(1000.file_size(BINARY).unwrap(), "1000 B");
assert_eq!(1000.file_size(DECIMAL).unwrap(), "1 KB");
assert_eq!(1023.file_size(BINARY).unwrap(), "1023 B");
assert_eq!(1023.file_size(DECIMAL).unwrap(), "1.02 KB");
assert_eq!(1024.file_size(BINARY).unwrap(), "1 KiB");
assert_eq!(1024.file_size(CONVENTIONAL).unwrap(), "1 KB");
let semi_custom_options = file_size_opts::FileSizeOpts {
space: false,
..file_size_opts::DECIMAL
};
assert_eq!(1000.file_size(semi_custom_options).unwrap(), "1KB");
let semi_custom_options2 = file_size_opts::FileSizeOpts {
suffix: "/s",
..file_size_opts::BINARY
};
assert_eq!(999.file_size(semi_custom_options2).unwrap(), "999 B/s");
let semi_custom_options3 = file_size_opts::FileSizeOpts {
suffix: "/day",
space: false,
..file_size_opts::DECIMAL
};
assert_eq!(1000.file_size(semi_custom_options3).unwrap(), "1KB/day");
let semi_custom_options4 = file_size_opts::FileSizeOpts {
fixed_at: file_size_opts::FixedAt::Byte,
..file_size_opts::BINARY
};
assert_eq!(2048.file_size(semi_custom_options4).unwrap(), "2048 B");
let semi_custom_options5 = file_size_opts::FileSizeOpts {
fixed_at: file_size_opts::FixedAt::Kilo,
..file_size_opts::BINARY
};
assert_eq!(
16584975.file_size(semi_custom_options5).unwrap(),
"16196.26 KiB"
);
let semi_custom_options6 = file_size_opts::FileSizeOpts {
fixed_at: file_size_opts::FixedAt::Tera,
decimal_places: 10,
..file_size_opts::BINARY
};
assert_eq!(
15284975.file_size(semi_custom_options6).unwrap(),
"0.0000139016 TiB"
);
let semi_custom_options7 = file_size_opts::FileSizeOpts {
allow_negative: true,
..file_size_opts::DECIMAL
};
assert_eq!(
(-5500).file_size(&semi_custom_options7).unwrap(),
"-5.50 KB"
);
assert_eq!((5500).file_size(&semi_custom_options7).unwrap(), "5.50 KB");
}
#[test]
fn use_custom_option_struct_twice() {
let options = file_size_opts::FileSizeOpts {
long_units: true,
..file_size_opts::DECIMAL
};
assert_eq!(1500.file_size(&options).unwrap(), "1.50 Kilobyte",);
assert_eq!(2500.file_size(&options).unwrap(), "2.50 Kilobytes",);
}
#[test]
fn pluralization_works() {
let options = file_size_opts::FileSizeOpts {
long_units: true,
decimal_zeroes: 2,
..file_size_opts::DECIMAL
};
assert_eq!(1.file_size(&options).unwrap(), "1.00 Byte",);
assert_eq!(1000.file_size(&options).unwrap(), "1.00 Kilobyte",);
assert_eq!(1000000.file_size(&options).unwrap(), "1.00 Megabyte",);
assert_eq!(1000000000.file_size(&options).unwrap(), "1.00 Gigabyte",);
assert_eq!(
1000000000000_i64.file_size(&options).unwrap(),
"1.00 Terabyte",
);
assert_eq!(
1000000000000000_i64.file_size(&options).unwrap(),
"1.00 Petabyte",
);
assert_eq!(
1000000000000000000_i64.file_size(&options).unwrap(),
"1.00 Exabyte",
);
}
#[test]
fn max_value_decimal() {
let options = file_size_opts::FileSizeOpts {
long_units: true,
decimal_places: 7,
..file_size_opts::DECIMAL
};
assert_eq!(
(std::u64::MAX).file_size(&options).unwrap(),
"18.4467441 Exabytes",
);
}
#[test]
fn max_value_binary() {
let options = file_size_opts::FileSizeOpts {
long_units: true,
decimal_places: 7,
..file_size_opts::BINARY
};
assert_eq!((std::u64::MAX).file_size(&options).unwrap(), "16 Exbibytes",);
}