Llewellyn/exa
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Make columns more generic

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This commit is contained in:
Ben S 2014-05-03 12:15:35 +01:00
parent dc9668c8d6
commit aef325bde9
1 changed files with 48 additions and 18 deletions
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66
exa.rs
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@ -14,6 +14,42 @@ fn main() {
}
}
enum Permissions {
Permissions,
}
enum FileName {
FileName,
}
trait Column {
fn display(&self, stat: &io::FileStat, filename: &str) -> ~str;
}
impl Column for FileName {
fn display(&self, stat: &io::FileStat, filename: &str) -> ~str {
file_colour(stat, filename).paint(filename.to_owned())
}
}
impl Column for Permissions {
fn display(&self, stat: &io::FileStat, filename: &str) -> ~str {
let bits = stat.perm;
return format!("{}{}{}{}{}{}{}{}{}{}",
type_char(stat.kind),
bit(bits, io::UserRead, ~"r", Yellow.bold()),
bit(bits, io::UserWrite, ~"w", Red.bold()),
bit(bits, io::UserExecute, ~"x", Green.bold().underline()),
bit(bits, io::GroupRead, ~"r", Yellow.normal()),
bit(bits, io::GroupWrite, ~"w", Red.normal()),
bit(bits, io::GroupExecute, ~"x", Green.normal()),
bit(bits, io::OtherRead, ~"r", Yellow.normal()),
bit(bits, io::OtherWrite, ~"w", Red.normal()),
bit(bits, io::OtherExecute, ~"x", Green.normal()),
);
}
}
fn list(path: Path) {
let mut files = match fs::readdir(&path) {
Ok(files) => files,
@ -32,9 +68,19 @@ fn list(path: Path) {
Err(e) => fail!("Couldn't stat {}: {}", filename, e),
};
let colour = file_colour(&stat, filename);
let columns = ~[~Permissions as ~Column, ~FileName as ~Column];
let mut cells = columns.iter().map(|c| c.display(&stat, filename));
println!("{} {}", perm_str(&stat), colour.paint(filename.to_owned()));
let mut first = true;
for cell in cells {
if first {
first = false;
} else {
print!(" ");
}
print!("{}", cell);
}
print!("\n");
}
}
@ -50,22 +96,6 @@ fn file_colour(stat: &io::FileStat, filename: &str) -> Style {
}
}
fn perm_str(stat: &io::FileStat) -> ~str {
let bits = stat.perm;
return format!("{}{}{}{}{}{}{}{}{}{}",
type_char(stat.kind),
bit(bits, io::UserRead, ~"r", Yellow.bold()),
bit(bits, io::UserWrite, ~"w", Red.bold()),
bit(bits, io::UserExecute, ~"x", Green.bold().underline()),
bit(bits, io::GroupRead, ~"r", Yellow.normal()),
bit(bits, io::GroupWrite, ~"w", Red.normal()),
bit(bits, io::GroupExecute, ~"x", Green.normal()),
bit(bits, io::OtherRead, ~"r", Yellow.normal()),
bit(bits, io::OtherWrite, ~"w", Red.normal()),
bit(bits, io::OtherExecute, ~"x", Green.normal()),
);
}
fn bit(bits: u32, bit: u32, other: ~str, style: Style) -> ~str {
if bits & bit == bit {
style.paint(other)