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use ansi_term::Style;
use locale::Numeric as NumericLocale;
use number_prefix::Prefix;
use crate::fs::fields as f;
use crate::output::cell::{TextCell, DisplayWidth};
use crate::output::table::SizeFormat;
impl f::Size {
pub fn render<C: Colours>(self, colours: &C, size_format: SizeFormat, numerics: &NumericLocale) -> TextCell {
use number_prefix::NumberPrefix;
let size = match self {
Self::Some(s) => s,
Self::None => return TextCell::blank(colours.no_size()),
Self::DeviceIDs(ref ids) => return ids.render(colours),
};
let result = match size_format {
SizeFormat::DecimalBytes => NumberPrefix::decimal(size as f64),
SizeFormat::BinaryBytes => NumberPrefix::binary(size as f64),
SizeFormat::JustBytes => {
// Use the binary prefix to select a style.
let prefix = match NumberPrefix::binary(size as f64) {
NumberPrefix::Standalone(_) => None,
NumberPrefix::Prefixed(p, _) => Some(p),
};
// But format the number directly using the locale.
let string = numerics.format_int(size);
return TextCell::paint(colours.size(prefix), string);
}
};
let (prefix, n) = match result {
NumberPrefix::Standalone(b) => return TextCell::paint(colours.size(None), numerics.format_int(b)),
NumberPrefix::Prefixed(p, n) => (p, n),
};
let symbol = prefix.symbol();
let number = if n < 10_f64 {
numerics.format_float(n, 1)
} else {
numerics.format_int(n.round() as isize)
};
TextCell {
// symbol is guaranteed to be ASCII since unit prefixes are hardcoded.
width: DisplayWidth::from(&*number) + symbol.len(),
contents: vec![
colours.size(Some(prefix)).paint(number),
colours.unit(Some(prefix)).paint(symbol),
].into(),
}
}
}
impl f::DeviceIDs {
fn render<C: Colours>(self, colours: &C) -> TextCell {
let major = self.major.to_string();
let minor = self.minor.to_string();
TextCell {
width: DisplayWidth::from(major.len() + 1 + minor.len()),
contents: vec![
colours.major().paint(major),
colours.comma().paint(","),
colours.minor().paint(minor),
].into(),
}
}
}
pub trait Colours {
fn size(&self, prefix: Option<Prefix>) -> Style;
fn unit(&self, prefix: Option<Prefix>) -> Style;
fn no_size(&self) -> Style;
fn major(&self) -> Style;
fn comma(&self) -> Style;
fn minor(&self) -> Style;
}
#[cfg(test)]
pub mod test {
use super::Colours;
use crate::output::cell::{TextCell, DisplayWidth};
use crate::output::table::SizeFormat;
use crate::fs::fields as f;
use locale::Numeric as NumericLocale;
use ansi_term::Colour::*;
use ansi_term::Style;
use number_prefix::Prefix;
struct TestColours;
impl Colours for TestColours {
fn size(&self, _prefix: Option<Prefix>) -> Style { Fixed(66).normal() }
fn unit(&self, _prefix: Option<Prefix>) -> Style { Fixed(77).bold() }
fn no_size(&self) -> Style { Black.italic() }
fn major(&self) -> Style { Blue.on(Red) }
fn comma(&self) -> Style { Green.italic() }
fn minor(&self) -> Style { Cyan.on(Yellow) }
}
#[test]
fn directory() {
let directory = f::Size::None;
let expected = TextCell::blank(Black.italic());
assert_eq!(expected, directory.render(&TestColours, SizeFormat::JustBytes, &NumericLocale::english()))
}
#[test]
fn file_decimal() {
let directory = f::Size::Some(2_100_000);
let expected = TextCell {
width: DisplayWidth::from(4),
contents: vec![
Fixed(66).paint("2.1"),
Fixed(77).bold().paint("M"),
].into(),
};
assert_eq!(expected, directory.render(&TestColours, SizeFormat::DecimalBytes, &NumericLocale::english()))
}
#[test]
fn file_binary() {
let directory = f::Size::Some(1_048_576);
let expected = TextCell {
width: DisplayWidth::from(5),
contents: vec![
Fixed(66).paint("1.0"),
Fixed(77).bold().paint("Mi"),
].into(),
};
assert_eq!(expected, directory.render(&TestColours, SizeFormat::BinaryBytes, &NumericLocale::english()))
}
#[test]
fn file_bytes() {
let directory = f::Size::Some(1048576);
let expected = TextCell {
width: DisplayWidth::from(9),
contents: vec![
Fixed(66).paint("1,048,576"),
].into(),
};
assert_eq!(expected, directory.render(&TestColours, SizeFormat::JustBytes, &NumericLocale::english()))
}
#[test]
fn device_ids() {
let directory = f::Size::DeviceIDs(f::DeviceIDs { major: 10, minor: 80 });
let expected = TextCell {
width: DisplayWidth::from(5),
contents: vec![
Blue.on(Red).paint("10"),
Green.italic().paint(","),
Cyan.on(Yellow).paint("80"),
].into(),
};
assert_eq!(expected, directory.render(&TestColours, SizeFormat::JustBytes, &NumericLocale::english()))
}
}
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