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Use number_prefix crate for number prefixes

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This commit is contained in:
Ben S 2014-12-18 07:00:31 +00:00
parent e005174577
commit 24628f97be
7 changed files with 45 additions and 99 deletions
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6
Cargo.lock generated
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@ -4,6 +4,7 @@ version = "0.1.0"
dependencies = [
"ansi_term 0.4.0 (git+https://github.com/ogham/rust-ansi-term.git)",
"natord 1.0.0 (git+https://github.com/lifthrasiir/rust-natord.git)",
"number_prefix 0.2.0 (git+https://github.com/ogham/rust-number-prefix.git)",
"users 0.1.0 (git+https://github.com/ogham/rust-users.git)",
]
@ -17,6 +18,11 @@ name = "natord"
version = "1.0.0"
source = "git+https://github.com/lifthrasiir/rust-natord.git#83ebf6e7999fe2646bca45d5f6800728a0bbd5c5"
[[package]]
name = "number_prefix"
version = "0.2.0"
source = "git+https://github.com/ogham/rust-number-prefix.git#3f690804a3f1704ee92901561189514d0ea0a6ab"
[[package]]
name = "users"
version = "0.1.0"

9
Cargo.toml
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@ -9,8 +9,11 @@ name = "exa"
[dependencies.ansi_term]
git = "https://github.com/ogham/rust-ansi-term.git"
[dependencies.natord]
git = "https://github.com/lifthrasiir/rust-natord.git"
[dependencies.number_prefix]
git = "https://github.com/ogham/rust-number-prefix.git"
[dependencies.users]
git = "https://github.com/ogham/rust-users.git"
[dependencies.natord]
git = "https://github.com/lifthrasiir/rust-natord.git"

9
src/column.rs
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@ -1,7 +1,7 @@
pub enum Column {
Permissions,
FileName,
FileSize(bool),
FileSize(SizeFormat),
Blocks,
User,
Group,
@ -11,6 +11,13 @@ pub enum Column {
impl Copy for Column { }
pub enum SizeFormat {
DecimalBytes,
BinaryBytes,
}
impl Copy for SizeFormat { }
// Each column can pick its own alignment. Usually, numbers are
// right-aligned, and text is left-aligned.

4
src/exa.rs
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@ -2,8 +2,9 @@
extern crate regex;
#[phase(plugin)] extern crate regex_macros;
extern crate ansi_term;
extern crate users;
extern crate number_prefix;
extern crate unicode;
extern crate users;
use std::io::FileType;
use std::io::fs;
@ -24,7 +25,6 @@ use users::OSUsers;
pub mod column;
pub mod dir;
pub mod format;
pub mod file;
pub mod filetype;
pub mod options;

27
src/file.rs
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@ -8,9 +8,10 @@ use ansi_term::Colour::{Red, Green, Yellow, Blue, Purple, Cyan, Fixed};
use users::Users;
use column::Column;
use number_prefix::{binary_prefix, decimal_prefix, Prefixed, Standalone, PrefixNames};
use column::{Column, SizeFormat};
use column::Column::*;
use format::{format_metric_bytes, format_IEC_bytes};
use dir::Dir;
use filetype::HasType;
@ -224,21 +225,25 @@ impl<'a> File<'a> {
}
}
fn file_size(&self, use_iec_prefixes: bool) -> String {
fn file_size(&self, size_format: SizeFormat) -> String {
// Don't report file sizes for directories. I've never looked
// at one of those numbers and gained any information from it.
if self.stat.kind == io::FileType::Directory {
GREY.paint("-").to_string()
}
else {
let (size, suffix) = if use_iec_prefixes {
format_IEC_bytes(self.stat.size)
}
else {
format_metric_bytes(self.stat.size)
};
return format!("{}{}", Green.bold().paint(size.as_slice()), Green.paint(suffix.as_slice()));
let result = match size_format {
SizeFormat::DecimalBytes => decimal_prefix(self.stat.size as f64),
SizeFormat::BinaryBytes => binary_prefix(self.stat.size as f64),
};
match result {
Standalone(bytes) => Green.bold().paint(bytes.to_string().as_slice()).to_string(),
Prefixed(prefix, n) => {
let number = if n < 10f64 { format!("{:.1}", n) } else { format!("{:.0}", n) };
format!("{}{}", Green.bold().paint(number.as_slice()), Green.paint(prefix.symbol()))
}
}
}
}

80
src/format.rs
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@ -1,80 +0,0 @@
static METRIC_PREFIXES: &'static [&'static str] = &[
"", "K", "M", "G", "T", "P", "E", "Z", "Y"
];
static IEC_PREFIXES: &'static [&'static str] = &[
"", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi"
];
fn format_bytes<'s>(mut amount: f64, kilo: f64, prefixes: &[&'s str]) -> (String, &'s str) {
let mut prefix = 0;
while amount >= kilo {
amount /= kilo;
prefix += 1;
}
if amount < 10.0 && prefix != 0 {
(format!("{:.1}", amount), prefixes[prefix])
}
else {
(format!("{:.0}", amount), prefixes[prefix])
}
}
#[allow(non_snake_case)]
pub fn format_IEC_bytes<'s>(amount: u64) -> (String, &'s str) {
format_bytes(amount as f64, 1024.0, IEC_PREFIXES)
}
pub fn format_metric_bytes<'s>(amount: u64) -> (String, &'s str) {
format_bytes(amount as f64, 1000.0, METRIC_PREFIXES)
}
#[test]
fn test_0() {
let kk = format_metric_bytes(0);
assert!(kk == ("0".to_string(), ""));
}
#[test]
fn test_999() {
let kk = format_metric_bytes(999);
assert!(kk == ("999".to_string(), ""));
}
#[test]
fn test_1000() {
let kk = format_metric_bytes(1000);
assert!(kk == ("1.0".to_string(), "K"));
}
#[test]
fn test_1030() {
let kk = format_metric_bytes(1030);
assert!(kk == ("1.0".to_string(), "K"));
}
#[test]
fn test_1100() {
let kk = format_metric_bytes(1100);
assert!(kk == ("1.1".to_string(), "K"));
}
#[test]
fn test_1111() {
let kk = format_metric_bytes(1111);
assert!(kk == ("1.1".to_string(), "K"));
}
#[test]
fn test_104857() {
let kk = format_IEC_bytes(126456);
assert!(kk == ("123".to_string(), "Ki"));
}
#[test]
fn test_1048576() {
let kk = format_IEC_bytes(1048576);
assert!(kk == ("1.0".to_string(), "Mi"));
}

9
src/options.rs
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@ -2,7 +2,7 @@ extern crate getopts;
extern crate natord;
use file::File;
use column::Column;
use column::{Column, SizeFormat};
use column::Column::*;
use term::dimensions;
@ -114,7 +114,12 @@ impl Options {
columns.push(HardLinks);
}
columns.push(FileSize(matches.opt_present("binary")));
if matches.opt_present("binary") {
columns.push(FileSize(SizeFormat::BinaryBytes))
}
else {
columns.push(FileSize(SizeFormat::DecimalBytes))
}
if matches.opt_present("blocks") {
columns.push(Blocks);