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|
use formatter::*;
use meta::{Meta, Type};
use std::cmp::Ordering;
use std::path::Path;
use term_grid::{Cell, Direction, Filling, Grid, GridOptions};
use terminal_size::terminal_size;
use Options;
pub struct Core<'a> {
formatter: Formatter,
options: &'a Options,
}
impl<'a> Core<'a> {
pub fn new(options: &'a Options) -> Core<'a> {
Core {
options,
formatter: Formatter::new(),
}
}
pub fn run(&self, inputs: Vec<&str>) {
let print_folder_name: bool = inputs.len() > 1;
let mut dirs = Vec::new();
let mut files = Vec::new();
for input in inputs {
let path = Path::new(input);
if path.is_dir() {
dirs.push(path);
} else if path.is_file() {
match Meta::from_path(path) {
Ok(meta) => files.push(meta),
Err(err) => println!("err : {}", err),
};
} else {
match path.metadata() {
Ok(_) => panic!("shouldn't failed"),
Err(err) => println!("cannot access '{}': {}", path.display(), err),
};
}
}
files.sort_unstable_by(sort_by_meta);
dirs.sort_unstable();
if !files.is_empty() {
self.print(&files);
}
for dir in dirs {
let folder_metas = self.list_folder_content(dir);
if folder_metas.is_empty() {
continue;
}
if print_folder_name {
println!("\n{}:", dir.display())
}
self.print(&folder_metas);
}
}
fn print(&self, metas: &[Meta]) {
if self.options.display_long {
self.print_long(metas)
} else {
self.print_short(metas)
}
}
fn print_short(&self, metas: &[Meta]) {
let term_width = match terminal_size() {
Some((w, _)) => w.0 as usize,
None => panic!("failed to retrieve terminal size"),
};
let mut grid = Grid::new(GridOptions {
filling: Filling::Spaces(1),
direction: Direction::LeftToRight,
});
for meta in metas {
let mut content = String::from(" ");
content = content + &self.formatter.format_name(&meta);
grid.add(Cell {
width: content.len(),
contents: content,
});
}
println!(
"{}",
grid.fit_into_width(term_width * 2)
.expect("failed to print the grid")
);
}
fn print_long(&self, metas: &[Meta]) {
let max_user_length = self.detect_user_lenght(&metas);
let max_group_length = self.detect_group_lenght(&metas);
let (max_size_value_length, max_size_unit_length) = self.detect_size_lenghts(&metas);
for meta in metas {
println!(
"{} {} {} {} {} {}{}",
self.formatter.format_permissions(&meta),
self.formatter.format_user(&meta.user, max_user_length),
self.formatter.format_group(&meta.group, max_group_length),
self.formatter
.format_size(&meta, max_size_value_length, max_size_unit_length),
self.formatter.format_date(&meta),
self.formatter.format_name(&meta),
self.formatter.format_symlink(&meta),
);
}
}
pub fn list_folder_content(&self, folder: &Path) -> Vec<Meta> {
let mut content: Vec<Meta> = Vec::new();
let dir = match folder.read_dir() {
Ok(dir) => dir,
Err(err) => {
println!("cannot open directory'{}': {}", folder.display(), err);
return content;
}
};
for entry in dir {
if let Ok(entry) = entry {
match Meta::from_path(entry.path().as_path()) {
Ok(meta) => {
if !meta.name.starts_with('.') || self.options.display_all {
content.push(meta);
}
}
Err(err) => println!("err 2: {}", err),
}
}
}
content.sort_unstable_by(sort_by_meta);
content
}
fn detect_user_lenght(&self, paths: &[Meta]) -> usize {
let mut max: usize = 0;
for path in paths {
if path.user.len() > max {
max = path.user.len();
}
}
max
}
fn detect_group_lenght(&self, paths: &[Meta]) -> usize {
let mut max: usize = 0;
for path in paths {
if path.group.len() > max {
max = path.group.len();
}
}
max
}
fn detect_size_lenghts(&self, paths: &[Meta]) -> (usize, usize) {
let mut max_value_length: usize = 0;
let mut max_unit_size: usize = 0;
for path in paths {
if path.size_value.len() > max_value_length {
max_value_length = path.size_value.len();
}
if path.size_unit.len() > max_unit_size {
max_unit_size = path.size_unit.len();
}
}
(max_value_length, max_unit_size)
}
}
fn sort_by_meta(a: &Meta, b: &Meta) -> Ordering {
if a.node_type == Type::Directory && b.node_type != Type::Directory {
Ordering::Less
} else if b.node_type == Type::Directory && a.node_type != Type::Directory {
Ordering::Greater
} else {
a.path.cmp(&b.path)
}
}
|
