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|
use std::ascii::AsciiExt;
use std::env::current_dir;
use std::fs;
use std::io;
use std::os::unix;
use std::os::unix::raw::{blkcnt_t, gid_t, ino_t, nlink_t, time_t, uid_t};
use std::os::unix::fs::{MetadataExt, PermissionsExt};
use std::path::{Component, Path, PathBuf};
use unicode_width::UnicodeWidthStr;
use dir::Dir;
use options::TimeType;
use feature::Attribute;
pub enum Type {
File, Directory, Pipe, Link, Special,
}
pub struct Permissions {
pub file_type: Type,
pub user_read: bool,
pub user_write: bool,
pub user_execute: bool,
pub group_read: bool,
pub group_write: bool,
pub group_execute: bool,
pub other_read: bool,
pub other_write: bool,
pub other_execute: bool,
pub attribute: bool,
}
pub struct Links {
pub count: nlink_t,
pub multiple: bool,
}
pub struct Inode(pub ino_t);
pub enum Blocks {
Some(blkcnt_t),
None,
}
pub struct User(pub uid_t);
pub struct Group(pub gid_t);
pub enum Size {
Some(u64),
None,
}
pub struct Time(pub time_t);
pub enum GitStatus {
NotModified,
New,
Modified,
Deleted,
Renamed,
TypeChange,
}
pub struct Git {
pub staged: GitStatus,
pub unstaged: GitStatus,
}
impl Git {
pub fn empty() -> Git {
Git { staged: GitStatus::NotModified, unstaged: GitStatus::NotModified }
}
}
/// A **File** is a wrapper around one of Rust's Path objects, along with
/// associated data about the file.
///
/// Each file is definitely going to have its filename displayed at least
/// once, have its file extension extracted at least once, and have its stat
/// information queried at least once, so it makes sense to do all this at the
/// start and hold on to all the information.
pub struct File<'a> {
pub name: String,
pub dir: Option<&'a Dir>,
pub ext: Option<String>,
pub path: PathBuf,
pub stat: fs::Metadata,
pub xattrs: Vec<Attribute>,
pub this: Option<Dir>,
}
impl<'a> File<'a> {
/// Create a new File object from the given Path, inside the given Dir, if
/// appropriate. Paths specified directly on the command-line have no Dirs.
///
/// This uses `symlink_metadata` instead of `metadata`, which doesn't
/// follow symbolic links.
pub fn from_path(path: &Path, parent: Option<&'a Dir>, recurse: bool) -> io::Result<File<'a>> {
fs::symlink_metadata(path).map(|stat| File::with_stat(stat, path, parent, recurse))
}
/// Create a new File object from the given Stat result, and other data.
pub fn with_stat(stat: fs::Metadata, path: &Path, parent: Option<&'a Dir>, recurse: bool) -> File<'a> {
let filename = path_filename(path);
// If we are recursing, then the `this` field contains a Dir object
// that represents the current File as a directory, if it is a
// directory. This is used for the --tree option.
let this = if recurse && stat.is_dir() {
Dir::readdir(path).ok()
}
else {
None
};
File {
path: path.to_path_buf(),
dir: parent,
stat: stat,
ext: ext(&filename),
xattrs: Attribute::llist(path).unwrap_or(Vec::new()),
name: filename.to_string(),
this: this,
}
}
pub fn is_directory(&self) -> bool {
self.stat.is_dir()
}
pub fn is_file(&self) -> bool {
self.stat.is_file()
}
pub fn is_executable_file(&self) -> bool {
let bit = unix::fs::USER_EXECUTE;
self.is_file() && (self.stat.permissions().mode() & bit) == bit
}
pub fn is_link(&self) -> bool {
self.stat.file_type().is_symlink()
}
pub fn is_pipe(&self) -> bool {
false // TODO: Still waiting on this one...
}
/// Whether this file is a dotfile or not.
pub fn is_dotfile(&self) -> bool {
self.name.starts_with(".")
}
pub fn path_prefix(&self) -> String {
let path_bytes: Vec<Component> = self.path.components().collect();
let mut path_prefix = String::new();
if !path_bytes.is_empty() {
// Use init() to add all but the last component of the
// path to the prefix. init() panics when given an
// empty list, hence the check.
for component in path_bytes.init().iter() {
path_prefix.push_str(&*component.as_os_str().to_string_lossy());
if component != &Component::RootDir {
path_prefix.push_str("/");
}
}
}
path_prefix
}
/// The Unicode 'display width' of the filename.
///
/// This is related to the number of graphemes in the string: most
/// characters are 1 columns wide, but in some contexts, certain
/// characters are actually 2 columns wide.
pub fn file_name_width(&self) -> usize {
UnicodeWidthStr::width(&self.name[..])
}
/// Assuming the current file is a symlink, follows the link and
/// returns a File object from the path the link points to.
///
/// If statting the file fails (usually because the file on the
/// other end doesn't exist), returns the *filename* of the file
/// that should be there.
pub fn link_target(&self) -> Result<File, String> {
let path = match fs::read_link(&self.path) {
Ok(path) => path,
Err(_) => return Err(self.name.clone()),
};
let target_path = match self.dir {
Some(dir) => dir.join(&*path),
None => path
};
let filename = path_filename(&target_path);
// Use plain `metadata` instead of `symlink_metadata` - we *want* to follow links.
if let Ok(stat) = fs::metadata(&target_path) {
Ok(File {
path: target_path.to_path_buf(),
dir: self.dir,
stat: stat,
ext: ext(&filename),
xattrs: Attribute::list(&target_path).unwrap_or(Vec::new()),
name: filename.to_string(),
this: None,
})
}
else {
Err(filename.to_string())
}
}
/// This file's number of hard links as a coloured string.
///
/// This is important, because a file with multiple links is uncommon,
/// while you can come across directories and other types with multiple
/// links much more often.
pub fn links(&self) -> Links {
let count = self.stat.as_raw().nlink();
Links {
count: count,
multiple: self.is_file() && count > 1,
}
}
pub fn inode(&self) -> Inode {
Inode
|