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|
mod date;
mod filetype;
mod indicator;
mod name;
mod owner;
mod permissions;
mod size;
mod symlink;
#[cfg(windows)]
mod windows_utils;
pub use self::date::Date;
pub use self::filetype::FileType;
pub use self::indicator::Indicator;
pub use self::name::Name;
pub use self::owner::Owner;
pub use self::permissions::Permissions;
pub use self::size::Size;
pub use self::symlink::SymLink;
pub use crate::flags::Display;
pub use crate::icon::Icons;
use std::fs;
use std::fs::read_link;
use std::io::{Error, ErrorKind};
use std::path::PathBuf;
use globset::GlobSet;
#[derive(Clone, Debug)]
pub struct Meta {
pub name: Name,
pub path: PathBuf,
pub permissions: Permissions,
pub date: Date,
pub owner: Owner,
pub file_type: FileType,
pub size: Size,
pub symlink: SymLink,
pub indicator: Indicator,
pub content: Option<Vec<Meta>>,
}
impl Meta {
pub fn recurse_into(
&self,
depth: usize,
display: Display,
ignore_globs: &GlobSet,
) -> Result<Option<Vec<Meta>>, std::io::Error> {
if depth == 0 {
return Ok(None);
}
if display == Display::DisplayDirectoryItself {
return Ok(None);
}
match self.file_type {
FileType::Directory { .. } => (),
_ => return Ok(None),
}
let entries = match self.path.read_dir() {
Ok(entries) => entries,
Err(err) => {
eprintln!("cannot access '{}': {}", self.path.display(), err);
return Ok(None);
}
};
let mut content: Vec<Meta> = Vec::new();
if let Display::DisplayAll = display {
let mut current_meta;
let mut parent_meta;
let absolute_path = fs::canonicalize(&self.path)?;
let parent_path = match absolute_path.parent() {
None => PathBuf::from("/"),
Some(path) => PathBuf::from(path),
};
current_meta = self.clone();
current_meta.name.name = ".".to_string();
parent_meta = Self::from_path(&parent_path)?;
parent_meta.name.name = "..".to_string();
content.push(current_meta);
content.push(parent_meta);
}
for entry in entries {
let path = entry?.path();
let name = path
.file_name()
.ok_or_else(|| Error::new(ErrorKind::InvalidInput, "invalid file name"))?;
if ignore_globs.is_match(&name) {
continue;
}
if let Display::DisplayOnlyVisible = display {
if name.to_string_lossy().starts_with('.') {
continue;
}
}
let mut entry_meta = match Self::from_path(&path) {
Ok(res) => res,
Err(err) => {
eprintln!("cannot access '{}': {}", path.display(), err);
continue;
}
};
match entry_meta.recurse_into(depth - 1, display, ignore_globs) {
Ok(content) => entry_meta.content = content,
Err(err) => {
eprintln!("cannot access '{}': {}", path.display(), err);
continue;
}
};
content.push(entry_meta);
}
Ok(Some(content))
}
pub fn calculate_total_size(&mut self) {
if let FileType::Directory { .. } = self.file_type {
if let Some(metas) = &mut self.content {
let mut size_accumulated = self.size.get_bytes();
for x in &mut metas.iter_mut() {
x.calculate_total_size();
size_accumulated += x.size.get_bytes();
}
self.size = Size::new(size_accumulated);
} else {
// possibility that 'depth' limited the recursion in 'recurse_into'
self.size = Size::new(Meta::calculate_total_file_size(&self.path));
}
}
}
fn calculate_total_file_size(path: &PathBuf) -> u64 {
let metadata = if read_link(&path).is_ok() {
// If the file is a link, retrieve the metadata without following
// the link.
path.symlink_metadata()
} else {
path.metadata()
};
let metadata = match metadata {
Ok(meta) => meta,
Err(err) => {
eprintln!("cannot access '{}': {}", path.display(), err);
return 0;
}
};
let file_type = metadata.file_type();
if file_type.is_file() {
metadata.len()
} else if file_type.is_dir() {
let mut size = metadata.len();
let entries = match path.read_dir() {
Ok(entries) => entries,
Err(err) => {
eprintln!("cannot access '{}': {}", path.display(), err);
return size;
}
};
for entry in entries {
let path = match entry {
Ok(entry) => entry.path(),
Err(err) => {
eprintln!("cannot access '{}': {}", path.display(), err);
continue;
}
};
size += Meta::calculate_total_file_size(&path);
}
size
} else {
0
}
}
pub fn from_path(path: &PathBuf) -> Result<Self, std::io::Error> {
let metadata = if read_link(path).is_ok() {
// If the file is a link, retrieve the metadata without following
// the link.
path.symlink_metadata()?
} else {
path.metadata()?
};
#[cfg(unix)]
let owner = Owner::from(&metadata);
#[cfg(unix)]
let permissions = Permissions::from(&metadata);
#[cfg(windows)]
let (owner, permissions) = windows_utils::get_file_data(&path)?;
let file_type = FileType::new(&metadata, &permissions);
let name = Name::new(&path, file_type);
Ok(Self {
path: path.to_path_buf(),
symlink: SymLink::from(path.as_path()),
size: Size::from(&metadata),
date: Date::from(&metadata),
indicator: Indicator::from(file_type),
owner,
permissions,
name,
file_type,
content: None,
})
}
}
|
