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#![doc(html_root_url = "https://docs.rs/human_format")]
#[derive(Debug)]
struct ScaledValue {
value: f32,
suffix: String,
}
#[derive(Debug)]
pub struct Formatter {
decimals: usize,
separator: String,
scales: Scales,
forced_units: String,
forced_suffix: String,
}
#[derive(Debug)]
pub struct Scales {
base: u32,
suffixes: Vec<String>,
}
impl Formatter {
pub fn new() -> Self {
Formatter {
decimals: 2,
separator: " ".to_owned(),
scales: Scales::SI(),
forced_units: "".to_owned(),
forced_suffix: "".to_owned(),
}
}
pub fn with_decimals(&mut self, decimals: usize) -> &mut Self {
self.decimals = decimals;
self
}
pub fn with_separator(&mut self, separator: &str) -> &mut Self {
self.separator = separator.to_owned();
self
}
pub fn with_scales(&mut self, scales: Scales) -> &mut Self {
self.scales = scales;
self
}
pub fn with_units(&mut self, units: &str) -> &mut Self {
self.forced_units = units.to_owned();
self
}
pub fn with_suffix(&mut self, suffix: &str) -> &mut Self {
self.forced_suffix = suffix.to_owned();
self
}
pub fn format(&self, value: f64) -> String {
if value < 0.0 {
return format!("-{}", self.format(value * -1.0));
}
let scaled_value = self.scales.to_scaled_value(value);
format!(
"{:.width$}{}{}{}",
scaled_value.value,
self.separator,
scaled_value.suffix,
self.forced_units,
width = self.decimals
)
}
pub fn parse(&self, value: &str) -> f64 {
let v: Vec<&str> = value.split(&self.separator).collect();
let result = v.get(0).unwrap().parse::<f64>().unwrap();
let mut suffix = v.get(1).unwrap().to_string();
let new_len = suffix.len() - self.forced_units.len();
suffix.truncate(new_len);
let magnitude_multiplier = self.scales.get_magnitude_multipler(&suffix);
(result * magnitude_multiplier)
}
}
impl Scales {
pub fn new() -> Self {
Scales::SI()
}
pub fn SI() -> Self {
Scales {
base: 1000,
suffixes: vec![
"".to_owned(),
"k".to_owned(),
"M".to_owned(),
"B".to_owned(),
"T".to_owned(),
"P".to_owned(),
"E".to_owned(),
"Z".to_owned(),
"Y".to_owned(),
],
}
}
pub fn Binary() -> Self {
Scales {
base: 1000,
suffixes: vec![
"".to_owned(),
"ki".to_owned(),
"Mi".to_owned(),
"Gi".to_owned(),
"Ti".to_owned(),
"Pi".to_owned(),
"Ei".to_owned(),
"Zi".to_owned(),
"Yi".to_owned(),
],
}
}
pub fn with_base(&mut self, base: u32) -> &mut Self {
self.base = base;
self
}
pub fn with_suffixes(&mut self, suffixes: Vec<&str>) -> &mut Self {
self.suffixes = Vec::new();
for suffix in suffixes {
self.suffixes.push(suffix.to_owned());
}
self
}
fn get_magnitude_multipler(&self, value: &str) -> f64 {
let ndx = 0;
for ndx in 0..self.suffixes.len() {
println!("{}", self.suffixes[ndx]);
if value == self.suffixes[ndx] {
return self.base.pow(ndx as u32) as f64;
}
}
return 0.0;
}
fn to_scaled_value(&self, value: f64) -> ScaledValue {
let mut index: usize = 0;
let mut _value: f64 = value;
loop {
if _value < (self.base as f64) {
break;
}
_value /= self.base as f64;
index += 1;
}
println!(
"\t\t{}: {} {} --- {}",
value,
index,
self.base.pow(index as u32),
value / (self.base.pow(index as u32) as f64)
);
ScaledValue {
value: (value / self.base.pow((index) as u32) as f64) as f32,
suffix: self.suffixes[index].to_owned(),
}
}
}