use std::borrow::Cow; use std::env::current_dir; use std::ffi::OsStr; use std::fs; use std::io; #[cfg(any(unix, target_os = "redox"))] use std::os::unix::fs::{FileTypeExt, PermissionsExt}; use std::path::{Path, PathBuf}; use crate::walk; pub fn path_absolute_form(path: &Path) -> io::Result { if path.is_absolute() { return Ok(path.to_path_buf()); } let path = path.strip_prefix(".").unwrap_or(path); current_dir().map(|path_buf| path_buf.join(path)) } pub fn absolute_path(path: &Path) -> io::Result { let path_buf = path_absolute_form(path)?; #[cfg(windows)] let path_buf = Path::new( path_buf .as_path() .to_string_lossy() .trim_start_matches(r"\\?\"), ) .to_path_buf(); Ok(path_buf) } // Path::is_dir() is not guaranteed to be intuitively correct for "." and ".." // See: https://github.com/rust-lang/rust/issues/45302 pub fn is_dir(path: &Path) -> bool { path.is_dir() && (path.file_name().is_some() || path.canonicalize().is_ok()) } #[cfg(any(unix, target_os = "redox"))] pub fn is_executable(md: &fs::Metadata) -> bool { md.permissions().mode() & 0o111 != 0 } #[cfg(windows)] pub fn is_executable(_: &fs::Metadata) -> bool { false } pub fn is_empty(entry: &walk::DirEntry) -> bool { if let Some(file_type) = entry.file_type() { if file_type.is_dir() { if let Ok(mut entries) = fs::read_dir(entry.path()) { entries.next().is_none() } else { false } } else if file_type.is_file() { entry.metadata().map(|m| m.len() == 0).unwrap_or(false) } else { false } } else { false } } #[cfg(any(unix, target_os = "redox"))] pub fn is_socket(ft: &fs::FileType) -> bool { ft.is_socket() } #[cfg(windows)] pub fn is_socket(_: &fs::FileType) -> bool { false } #[cfg(any(unix, target_os = "redox"))] pub fn is_pipe(ft: &fs::FileType) -> bool { ft.is_fifo() } #[cfg(windows)] pub fn is_pipe(_: &fs::FileType) -> bool { false } #[cfg(any(unix, target_os = "redox"))] pub fn osstr_to_bytes(input: &OsStr) -> Cow<[u8]> { use std::os::unix::ffi::OsStrExt; Cow::Borrowed(input.as_bytes()) } #[cfg(windows)] pub fn osstr_to_bytes(input: &OsStr) -> Cow<[u8]> { let string = input.to_string_lossy(); match string { Cow::Owned(string) => Cow::Owned(string.into_bytes()), Cow::Borrowed(string) => Cow::Borrowed(string.as_bytes()), } } /// Remove the `./` prefix from a path. pub fn strip_current_dir(path: &Path) -> &Path { path.strip_prefix(".").unwrap_or(path) } #[cfg(test)] mod tests { use super::strip_current_dir; use std::path::Path; #[test] fn strip_current_dir_basic() { assert_eq!(strip_current_dir(Path::new("./foo")), Path::new("foo")); assert_eq!(strip_current_dir(Path::new("foo")), Path::new("foo")); assert_eq!( strip_current_dir(Path::new("./foo/bar/baz")), Path::new("foo/bar/baz") ); assert_eq!( strip_current_dir(Path::new("foo/bar/baz")), Path::new("foo/bar/baz") ); } }