pub struct PathBuf { /* private fields */ }Expand description
An owned, mutable path (akin to String).
This type provides methods like push and set_extension that mutate
the path in place. It also implements Deref to Path, meaning that
all methods on Path slices are available on PathBuf values as well.
More details about the overall approach can be found in the module documentation.
Examples
You can use push to build up a PathBuf from
components:
use std::path::PathBuf;
let mut path = PathBuf::new();
path.push(r"C:\");
path.push("windows");
path.push("system32");
path.set_extension("dll");RunHowever, push is best used for dynamic situations. This is a better way
to do this when you know all of the components ahead of time:
use std::path::PathBuf;
let path: PathBuf = [r"C:\", "windows", "system32.dll"].iter().collect();RunWe can still do better than this! Since these are all strings, we can use
From::from:
use std::path::PathBuf;
let path = PathBuf::from(r"C:\windows\system32.dll");RunWhich method works best depends on what kind of situation you’re in.
Implementations
impl PathBuf
source
impl PathBuf
sourcepub fn with_capacity(capacity: usize) -> PathBuf
1.44.0 · source
pub fn with_capacity(capacity: usize) -> PathBuf
1.44.0 · sourceCreates a new PathBuf with a given capacity used to create the
internal OsString. See with_capacity defined on OsString.
Examples
use std::path::PathBuf;
let mut path = PathBuf::with_capacity(10);
let capacity = path.capacity();
// This push is done without reallocating
path.push(r"C:\");
assert_eq!(capacity, path.capacity());Runpub fn push<P: AsRef<Path>>(&mut self, path: P)
source
pub fn push<P: AsRef<Path>>(&mut self, path: P)
sourceExtends self with path.
If path is absolute, it replaces the current path.
On Windows:
- if
pathhas a root but no prefix (e.g.,\windows), it replaces everything except for the prefix (if any) ofself. - if
pathhas a prefix but no root, it replacesself. - if
selfhas a verbatim prefix (e.g.\\?\C:\windows) andpathis not empty, the new path is normalized: all references to.and..are removed.
Examples
Pushing a relative path extends the existing path:
use std::path::PathBuf;
let mut path = PathBuf::from("/tmp");
path.push("file.bk");
assert_eq!(path, PathBuf::from("/tmp/file.bk"));RunPushing an absolute path replaces the existing path:
use std::path::PathBuf;
let mut path = PathBuf::from("/tmp");
path.push("/etc");
assert_eq!(path, PathBuf::from("/etc"));Runpub fn pop(&mut self) -> bool
source
pub fn pop(&mut self) -> bool
sourceTruncates self to self.parent.
Returns false and does nothing if self.parent is None.
Otherwise, returns true.
Examples
use std::path::{Path, PathBuf};
let mut p = PathBuf::from("/spirited/away.rs");
p.pop();
assert_eq!(Path::new("/spirited"), p);
p.pop();
assert_eq!(Path::new("/"), p);Runpub fn set_file_name<S: AsRef<OsStr>>(&mut self, file_name: S)
source
pub fn set_file_name<S: AsRef<OsStr>>(&mut self, file_name: S)
sourceUpdates self.file_name to file_name.
If self.file_name was None, this is equivalent to pushing
file_name.
Otherwise it is equivalent to calling pop and then pushing
file_name. The new path will be a sibling of the original path.
(That is, it will have the same parent.)
Examples
use std::path::PathBuf;
let mut buf = PathBuf::from("/");
assert!(buf.file_name() == None);
buf.set_file_name("bar");
assert!(buf == PathBuf::from("/bar"));
assert!(buf.file_name().is_some());
buf.set_file_name("baz.txt");
assert!(buf == PathBuf::from("/baz.txt"));Runpub fn set_extension<S: AsRef<OsStr>>(&mut self, extension: S) -> bool
source
pub fn set_extension<S: AsRef<OsStr>>(&mut self, extension: S) -> bool
sourceUpdates self.extension to extension.
Returns false and does nothing if self.file_name is None,
returns true and updates the extension otherwise.
If self.extension is None, the extension is added; otherwise
it is replaced.
Examples
use std::path::{Path, PathBuf};
let mut p = PathBuf::from("/feel/the");
p.set_extension("force");
assert_eq!(Path::new("/feel/the.force"), p.as_path());
p.set_extension("dark_side");
assert_eq!(Path::new("/feel/the.dark_side"), p.as_path());Runpub fn into_os_string(self) -> OsString
source
pub fn into_os_string(self) -> OsString
sourcepub fn into_boxed_path(self) -> Box<Path>ⓘNotable traits for Box<I, A>impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
1.20.0 · source
pub fn into_boxed_path(self) -> Box<Path>ⓘNotable traits for Box<I, A>impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
1.20.0 · sourceI: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError>
source
pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError>
sourceInvokes try_reserve on the underlying instance of OsString.
pub fn reserve_exact(&mut self, additional: usize)
1.44.0 · source
pub fn reserve_exact(&mut self, additional: usize)
1.44.0 · sourceInvokes reserve_exact on the underlying instance of OsString.
pub fn try_reserve_exact(
&mut self,
additional: usize
) -> Result<(), TryReserveError>
source
pub fn try_reserve_exact(
&mut self,
additional: usize
) -> Result<(), TryReserveError>
sourceInvokes try_reserve_exact on the underlying instance of OsString.
pub fn shrink_to_fit(&mut self)
1.44.0 · source
pub fn shrink_to_fit(&mut self)
1.44.0 · sourceInvokes shrink_to_fit on the underlying instance of OsString.
Methods from Deref<Target = Path>
pub fn to_str(&self) -> Option<&str>
source
pub fn to_str(&self) -> Option<&str>
sourceYields a &str slice if the Path is valid unicode.
This conversion may entail doing a check for UTF-8 validity. Note that validation is performed because non-UTF-8 strings are perfectly valid for some OS.
Examples
use std::path::Path;
let path = Path::new("foo.txt");
assert_eq!(path.to_str(), Some("foo.txt"));Runpub fn to_string_lossy(&self) -> Cow<'_, str>
source
pub fn to_string_lossy(&self) -> Cow<'_, str>
sourceConverts a Path to a Cow<str>.
Any non-Unicode sequences are replaced with
U+FFFD REPLACEMENT CHARACTER.
Examples
Calling to_string_lossy on a Path with valid unicode:
use std::path::Path;
let path = Path::new("foo.txt");
assert_eq!(path.to_string_lossy(), "foo.txt");RunHad path contained invalid unicode, the to_string_lossy call might
have returned "fo�.txt".
pub fn to_path_buf(&self) -> PathBuf
source
pub fn to_path_buf(&self) -> PathBuf
sourcepub fn is_absolute(&self) -> bool
source
pub fn is_absolute(&self) -> bool
sourceReturns true if the Path is absolute, i.e., if it is independent of
the current directory.
-
On Unix, a path is absolute if it starts with the root, so
is_absoluteandhas_rootare equivalent. -
On Windows, a path is absolute if it has a prefix and starts with the root:
c:\windowsis absolute, whilec:tempand\tempare not.
Examples
use std::path::Path;
assert!(!Path::new("foo.txt").is_absolute());Runpub fn is_relative(&self) -> bool
source
pub fn is_relative(&self) -> bool
sourceReturns true if the Path is relative, i.e., not absolute.
See is_absolute’s documentation for more details.
Examples
use std::path::Path;
assert!(Path::new("foo.txt").is_relative());Runpub fn has_root(&self) -> bool
source
pub fn has_root(&self) -> bool
sourceReturns true if the Path has a root.
-
On Unix, a path has a root if it begins with
/. -
On Windows, a path has a root if it:
- has no prefix and begins with a separator, e.g.,
\windows - has a prefix followed by a separator, e.g.,
c:\windowsbut notc:windows - has any non-disk prefix, e.g.,
\\server\share
- has no prefix and begins with a separator, e.g.,
Examples
use std::path::Path;
assert!(Path::new("/etc/passwd").has_root());Runpub fn parent(&self) -> Option<&Path>
source
pub fn parent(&self) -> Option<&Path>
sourceReturns the Path without its final component, if there is one.
Returns None if the path terminates in a root or prefix.
Examples
use std::path::Path;
let path = Path::new("/foo/bar");
let parent = path.parent().unwrap();
assert_eq!(parent, Path::new("/foo"));
let grand_parent = parent.parent().unwrap();
assert_eq!(grand_parent, Path::new("/"));
assert_eq!(grand_parent.parent(), None);Runpub fn ancestors(&self) -> Ancestors<'_>ⓘNotable traits for Ancestors<'a>impl<'a> Iterator for Ancestors<'a> type Item = &'a Path;
1.28.0 · source
pub fn ancestors(&self) -> Ancestors<'_>ⓘNotable traits for Ancestors<'a>impl<'a> Iterator for Ancestors<'a> type Item = &'a Path;
1.28.0 · sourceProduces an iterator over Path and its ancestors.
The iterator will yield the Path that is returned if the parent method is used zero
or more times. That means, the iterator will yield &self, &self.parent().unwrap(),
&self.parent().unwrap().parent().unwrap() and so on. If the parent method returns
None, the iterator will do likewise. The iterator will always yield at least one value,
namely &self.
Examples
use std::path::Path;
let mut ancestors = Path::new("/foo/bar").ancestors();
assert_eq!(ancestors.next(), Some(Path::new("/foo/bar")));
assert_eq!(ancestors.next(), Some(Path::new("/foo")));
assert_eq!(ancestors.next(), Some(Path::new("/")));
assert_eq!(ancestors.next(), None);
let mut ancestors = Path::new("../foo/bar").ancestors();
assert_eq!(ancestors.next(), Some(Path::new("../foo/bar")));
assert_eq!(ancestors.next(), Some(Path::new("../foo")));
assert_eq!(ancestors.next(), Some(Path::new("..")));
assert_eq!(ancestors.next(), Some(Path::new("")));
assert_eq!(ancestors.next(), None);Runpub fn file_name(&self) -> Option<&OsStr>
source
pub fn file_name(&self) -> Option<&OsStr>
sourceReturns the final component of the Path, if there is one.
If the path is a normal file, this is the file name. If it’s the path of a directory, this is the directory name.
Returns None if the path terminates in ...
Examples
use std::path::Path;
use std::ffi::OsStr;
assert_eq!(Some(OsStr::new("bin")), Path::new("/usr/bin/").file_name());
assert_eq!(Some(OsStr::new("foo.txt")), Path::new("tmp/foo.txt").file_name());
assert_eq!(Some(OsStr::new("foo.txt")), Path::new("foo.txt/.").file_name());
assert_eq!(Some(OsStr::new("foo.txt")), Path::new("foo.txt/.//").file_name());
assert_eq!(None, Path::new("foo.txt/..").file_name());
assert_eq!(None, Path::new("/").file_name());Runpub fn strip_prefix<P>(&self, base: P) -> Result<&Path, StripPrefixError> where
P: AsRef<Path>,
1.7.0 · source
pub fn strip_prefix<P>(&self, base: P) -> Result<&Path, StripPrefixError> where
P: AsRef<Path>,
1.7.0 · sourceReturns a path that, when joined onto base, yields self.
Errors
If base is not a prefix of self (i.e., starts_with
returns false), returns Err.
Examples
use std::path::{Path, PathBuf};
let path = Path::new("/test/haha/foo.txt");
assert_eq!(path.strip_prefix("/"), Ok(Path::new("test/haha/foo.txt")));
assert_eq!(path.strip_prefix("/test"), Ok(Path::new("haha/foo.txt")));
assert_eq!(path.strip_prefix("/test/"), Ok(Path::new("haha/foo.txt")));
assert_eq!(path.strip_prefix("/test/haha/foo.txt"), Ok(Path::new("")));
assert_eq!(path.strip_prefix("/test/haha/foo.txt/"), Ok(Path::new("")));
assert!(path.strip_prefix("test").is_err());
assert!(path.strip_prefix("/haha").is_err());
let prefix = PathBuf::from("/test/");
assert_eq!(path.strip_prefix(prefix), Ok(Path::new("haha/foo.txt")));Runpub fn starts_with<P: AsRef<Path>>(&self, base: P) -> bool
source
pub fn starts_with<P: AsRef<Path>>(&self, base: P) -> bool
sourceDetermines whether base is a prefix of self.
Only considers whole path components to match.
Examples
use std::path::Path;
let path = Path::new("/etc/passwd");
assert!(path.starts_with("/etc"));
assert!(path.starts_with("/etc/"));
assert!(path.starts_with("/etc/passwd"));
assert!(path.starts_with("/etc/passwd/")); // extra slash is okay
assert!(path.starts_with("/etc/passwd///")); // multiple extra slashes are okay
assert!(!path.starts_with("/e"));
assert!(!path.starts_with("/etc/passwd.txt"));
assert!(!Path::new("/etc/foo.rs").starts_with("/etc/foo"));Runpub fn ends_with<P: AsRef<Path>>(&self, child: P) -> bool
source
pub fn ends_with<P: AsRef<Path>>(&self, child: P) -> bool
sourceDetermines whether child is a suffix of self.
Only considers whole path components to match.
Examples
use std::path::Path;
let path = Path::new("/etc/resolv.conf");
assert!(path.ends_with("resolv.conf"));
assert!(path.ends_with("etc/resolv.conf"));
assert!(path.ends_with("/etc/resolv.conf"));
assert!(!path.ends_with("/resolv.conf"));
assert!(!path.ends_with("conf")); // use .extension() insteadRunpub fn file_stem(&self) -> Option<&OsStr>
source
pub fn file_stem(&self) -> Option<&OsStr>
sourceExtracts the stem (non-extension) portion of self.file_name.
The stem is:
None, if there is no file name;- The entire file name if there is no embedded
.; - The entire file name if the file name begins with
.and has no other.s within; - Otherwise, the portion of the file name before the final
.
Examples
use std::path::Path;
assert_eq!("foo", Path::new("foo.rs").file_stem().unwrap());
assert_eq!("foo.tar", Path::new("foo.tar.gz").file_stem().unwrap());RunSee Also
This method is similar to Path::file_prefix, which extracts the portion of the file name
before the first .
pub fn file_prefix(&self) -> Option<&OsStr>
source
pub fn file_prefix(&self) -> Option<&OsStr>
sourceExtracts the prefix of self.file_name.
The prefix is:
None, if there is no file name;- The entire file name if there is no embedded
.; - The portion of the file name before the first non-beginning
.; - The entire file name if the file name begins with
.and has no other.s within; - The portion of the file name before the second
.if the file name begins with.
Examples
use std::path::Path;
assert_eq!("foo", Path::new("foo.rs").file_prefix().unwrap());
assert_eq!("foo", Path::new("foo.tar.gz").file_prefix().unwrap());RunSee Also
This method is similar to Path::file_stem, which extracts the portion of the file name
before the last .
pub fn extension(&self) -> Option<&OsStr>
source
pub fn extension(&self) -> Option<&OsStr>
sourceExtracts the extension of self.file_name, if possible.
The extension is:
None, if there is no file name;None, if there is no embedded.;None, if the file name begins with.and has no other.s within;- Otherwise, the portion of the file name after the final
.
Examples
use std::path::Path;
assert_eq!("rs", Path::new("foo.rs").extension().unwrap());
assert_eq!("gz", Path::new("foo.tar.gz").extension().unwrap());Runpub fn join<P: AsRef<Path>>(&self, path: P) -> PathBuf
source
pub fn join<P: AsRef<Path>>(&self, path: P) -> PathBuf
sourceCreates an owned PathBuf with path adjoined to self.
See PathBuf::push for more details on what it means to adjoin a path.
Examples
use std::path::{Path, PathBuf};
assert_eq!(Path::new("/etc").join("passwd"), PathBuf::from("/etc/passwd"));Runpub fn with_file_name<S: AsRef<OsStr>>(&self, file_name: S) -> PathBuf
source
pub fn with_file_name<S: AsRef<OsStr>>(&self, file_name: S) -> PathBuf
sourceCreates an owned PathBuf like self but with the given file name.
See PathBuf::set_file_name for more details.
Examples
use std::path::{Path, PathBuf};
let path = Path::new("/tmp/foo.txt");
assert_eq!(path.with_file_name("bar.txt"), PathBuf::from("/tmp/bar.txt"));
let path = Path::new("/tmp");
assert_eq!(path.with_file_name("var"), PathBuf::from("/var"));Runpub fn with_extension<S: AsRef<OsStr>>(&self, extension: S) -> PathBuf
source
pub fn with_extension<S: AsRef<OsStr>>(&self, extension: S) -> PathBuf
sourceCreates an owned PathBuf like self but with the given extension.
See PathBuf::set_extension for more details.
Examples
use std::path::{Path, PathBuf};
let path = Path::new("foo.rs");
assert_eq!(path.with_extension("txt"), PathBuf::from("foo.txt"));
let path = Path::new("foo.tar.gz");
assert_eq!(path.with_extension(""), PathBuf::from("foo.tar"));
assert_eq!(path.with_extension("xz"), PathBuf::from("foo.tar.xz"));
assert_eq!(path.with_extension("").with_extension("txt"), PathBuf::from("foo.txt"));Runpub fn components(&self) -> Components<'_>ⓘNotable traits for Components<'a>impl<'a> Iterator for Components<'a> type Item = Component<'a>;
source
pub fn components(&self) -> Components<'_>ⓘNotable traits for Components<'a>impl<'a> Iterator for Components<'a> type Item = Component<'a>;
sourceProduces an iterator over the Components of the path.
When parsing the path, there is a small amount of normalization:
-
Repeated separators are ignored, so
a/banda//bboth haveaandbas components. -
Occurrences of
.are normalized away, except if they are at the beginning of the path. For example,a/./b,a/b/,a/b/.anda/ball haveaandbas components, but./a/bstarts with an additionalCurDircomponent. -
A trailing slash is normalized away,
/a/band/a/b/are equivalent.
Note that no other normalization takes place; in particular, a/c
and a/b/../c are distinct, to account for the possibility that b
is a symbolic link (so its parent isn’t a).
Examples
use std::path::{Path, Component};
use std::ffi::OsStr;
let mut components = Path::new("/tmp/foo.txt").components();
assert_eq!(components.next(), Some(Component::RootDir));
assert_eq!(components.next(), Some(Component::Normal(OsStr::new("tmp"))));
assert_eq!(components.next(), Some(Component::Normal(OsStr::new("foo.txt"))));
assert_eq!(components.next(), None)Runpub fn iter(&self) -> Iter<'_>ⓘNotable traits for Iter<'a>impl<'a> Iterator for Iter<'a> type Item = &'a OsStr;
source
pub fn iter(&self) -> Iter<'_>ⓘNotable traits for Iter<'a>impl<'a> Iterator for Iter<'a> type Item = &'a OsStr;
sourceProduces an iterator over the path’s components viewed as OsStr
slices.
For more information about the particulars of how the path is separated
into components, see components.
Examples
use std::path::{self, Path};
use std::ffi::OsStr;
let mut it = Path::new("/tmp/foo.txt").iter();
assert_eq!(it.next(), Some(OsStr::new(&path::MAIN_SEPARATOR.to_string())));
assert_eq!(it.next(), Some(OsStr::new("tmp")));
assert_eq!(it.next(), Some(OsStr::new("foo.txt")));
assert_eq!(it.next(), None)Runpub fn display(&self) -> Display<'_>
source
pub fn display(&self) -> Display<'_>
sourceReturns an object that implements Display for safely printing paths
that may contain non-Unicode data. This may perform lossy conversion,
depending on the platform. If you would like an implementation which
escapes the path please use Debug instead.
Examples
use std::path::Path;
let path = Path::new("/tmp/foo.rs");
println!("{}", path.display());Runpub fn metadata(&self) -> Result<Metadata>
1.5.0 · source
pub fn metadata(&self) -> Result<Metadata>
1.5.0 · sourceQueries the file system to get information about a file, directory, etc.
This function will traverse symbolic links to query information about the destination file.
This is an alias to fs::metadata.
Examples
use std::path::Path;
let path = Path::new("/Minas/tirith");
let metadata = path.metadata().expect("metadata call failed");
println!("{:?}", metadata.file_type());Runpub fn symlink_metadata(&self) -> Result<Metadata>
1.5.0 · source
pub fn symlink_metadata(&self) -> Result<Metadata>
1.5.0 · sourceQueries the metadata about a file without following symlinks.
This is an alias to fs::symlink_metadata.
Examples
use std::path::Path;
let path = Path::new("/Minas/tirith");
let metadata = path.symlink_metadata().expect("symlink_metadata call failed");
println!("{:?}", metadata.file_type());Runpub fn canonicalize(&self) -> Result<PathBuf>
1.5.0 · source
pub fn canonicalize(&self) -> Result<PathBuf>
1.5.0 · sourceReturns the canonical, absolute form of the path with all intermediate components normalized and symbolic links resolved.
This is an alias to fs::canonicalize.
Examples
use std::path::{Path, PathBuf};
let path = Path::new("/foo/test/../test/bar.rs");
assert_eq!(path.canonicalize().unwrap(), PathBuf::from("/foo/test/bar.rs"));Runpub fn read_link(&self) -> Result<PathBuf>
1.5.0 · source
pub fn read_link(&self) -> Result<PathBuf>
1.5.0 · sourceReads a symbolic link, returning the file that the link points to.
This is an alias to fs::read_link.
Examples
use std::path::Path;
let path = Path::new("/laputa/sky_castle.rs");
let path_link = path.read_link().expect("read_link call failed");Runpub fn read_dir(&self) -> Result<ReadDir>
1.5.0 · source
pub fn read_dir(&self) -> Result<ReadDir>
1.5.0 · sourceReturns an iterator over the entries within a directory.
The iterator will yield instances of io::Result<fs::DirEntry>. New
errors may be encountered after an iterator is initially constructed.
This is an alias to fs::read_dir.
Examples
use std::path::Path;
let path = Path::new("/laputa");
for entry in path.read_dir().expect("read_dir call failed") {
if let Ok(entry) = entry {
println!("{:?}", entry.path());
}
}Runpub fn exists(&self) -> bool
1.5.0 · source
pub fn exists(&self) -> bool
1.5.0 · sourceReturns true if the path points at an existing entity.
This function will traverse symbolic links to query information about the destination file.
If you cannot access the metadata of the file, e.g. because of a
permission error or broken symbolic links, this will return false.
Examples
use std::path::Path;
assert!(!Path::new("does_not_exist.txt").exists());RunSee Also
This is a convenience function that coerces errors to false. If you want to
check errors, call fs::metadata.
pub fn try_exists(&self) -> Result<bool>
source
pub fn try_exists(&self) -> Result<bool>
sourceReturns Ok(true) if the path points at an existing entity.
This function will traverse symbolic links to query information about the
destination file. In case of broken symbolic links this will return Ok(false).
As opposed to the exists() method, this one doesn’t silently ignore errors
unrelated to the path not existing. (E.g. it will return Err(_) in case of permission
denied on some of the parent directories.)
Examples
#![feature(path_try_exists)]
use std::path::Path;
assert!(!Path::new("does_not_exist.txt").try_exists().expect("Can't check existence of file does_not_exist.txt"));
assert!(Path::new("/root/secret_file.txt").try_exists().is_err());Runpub fn is_file(&self) -> bool
1.5.0 · source
pub fn is_file(&self) -> bool
1.5.0 · sourceReturns true if the path exists on disk and is pointing at a regular file.
This function will traverse symbolic links to query information about the destination file.
If you cannot access the metadata of the file, e.g. because of a
permission error or broken symbolic links, this will return false.
Examples
use std::path::Path;
assert_eq!(Path::new("./is_a_directory/").is_file(), false);
assert_eq!(Path::new("a_file.txt").is_file(), true);RunSee Also
This is a convenience function that coerces errors to false. If you want to
check errors, call fs::metadata and handle its Result. Then call
fs::Metadata::is_file if it was Ok.
When the goal is simply to read from (or write to) the source, the most
reliable way to test the source can be read (or written to) is to open
it. Only using is_file can break workflows like diff <( prog_a ) on
a Unix-like system for example. See fs::File::open or
fs::OpenOptions::open for more information.
pub fn is_dir(&self) -> bool
1.5.0 · source
pub fn is_dir(&self) -> bool
1.5.0 · sourceReturns true if the path exists on disk and is pointing at a directory.
This function will traverse symbolic links to query information about the destination file.
If you cannot access the metadata of the file, e.g. because of a
permission error or broken symbolic links, this will return false.
Examples
use std::path::Path;
assert_eq!(Path::new("./is_a_directory/").is_dir(), true);
assert_eq!(Path::new("a_file.txt").is_dir(), false);RunSee Also
This is a convenience function that coerces errors to false. If you want to
check errors, call fs::metadata and handle its Result. Then call
fs::Metadata::is_dir if it was Ok.
pub fn is_symlink(&self) -> bool
1.58.0 · source
pub fn is_symlink(&self) -> bool
1.58.0 · sourceReturns true if the path exists on disk and is pointing at a symbolic link.
This function will not traverse symbolic links. In case of a broken symbolic link this will also return true.
If you cannot access the directory containing the file, e.g., because of a permission error, this will return false.
Examples
use std::path::Path;
use std::os::unix::fs::symlink;
let link_path = Path::new("link");
symlink("/origin_does_not_exist/", link_path).unwrap();
assert_eq!(link_path.is_symlink(), true);
assert_eq!(link_path.exists(), false);RunSee Also
This is a convenience function that coerces errors to false. If you want to
check errors, call fs::symlink_metadata and handle its Result. Then call
fs::Metadata::is_symlink if it was Ok.
Trait Implementations
impl<P: AsRef<Path>> Extend<P> for PathBuf
source
impl<P: AsRef<Path>> Extend<P> for PathBuf
sourcefn extend<I: IntoIterator<Item = P>>(&mut self, iter: I)
source
fn extend<I: IntoIterator<Item = P>>(&mut self, iter: I)
sourceExtends a collection with the contents of an iterator. Read more
fn extend_reserve(&mut self, additional: usize)
source
fn extend_reserve(&mut self, additional: usize)
sourceReserves capacity in a collection for the given number of additional elements. Read more
impl From<PathBuf> for Box<Path>
1.20.0 · source
impl From<PathBuf> for Box<Path>
1.20.0 · sourcefn from(p: PathBuf) -> Box<Path>ⓘNotable traits for Box<I, A>impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
source
fn from(p: PathBuf) -> Box<Path>ⓘNotable traits for Box<I, A>impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
sourceI: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for Box<R>impl<W: Write + ?Sized> Write for Box<W>
impl<P: AsRef<Path>> FromIterator<P> for PathBuf
source
impl<P: AsRef<Path>> FromIterator<P> for PathBuf
sourcefn from_iter<I: IntoIterator<Item = P>>(iter: I) -> PathBuf
source
fn from_iter<I: IntoIterator<Item = P>>(iter: I) -> PathBuf
sourceCreates a value from an iterator. Read more
impl<'a> IntoIterator for &'a PathBuf
1.6.0 · source
impl<'a> IntoIterator for &'a PathBuf
1.6.0 · sourceimpl Ord for PathBuf
source
impl Ord for PathBuf
sourceimpl<'a, 'b> PartialOrd<&'a OsStr> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<&'a OsStr> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &&'a OsStr) -> Option<Ordering>
source
fn partial_cmp(&self, other: &&'a OsStr) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<&'a Path> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<&'a Path> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &&'a Path) -> Option<Ordering>
source
fn partial_cmp(&self, other: &&'a Path) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<Cow<'a, OsStr>> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
source
fn partial_cmp(&self, other: &Cow<'a, OsStr>) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<Cow<'a, Path>> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
source
fn partial_cmp(&self, other: &Cow<'a, Path>) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<OsStr> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<OsStr> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
source
fn partial_cmp(&self, other: &OsStr) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<OsString> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<OsString> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &OsString) -> Option<Ordering>
source
fn partial_cmp(&self, other: &OsString) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<Path> for PathBuf
1.8.0 · source
impl<'a, 'b> PartialOrd<Path> for PathBuf
1.8.0 · sourcefn partial_cmp(&self, other: &Path) -> Option<Ordering>
source
fn partial_cmp(&self, other: &Path) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl PartialOrd<PathBuf> for PathBuf
source
impl PartialOrd<PathBuf> for PathBuf
sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for Path
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for Path
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for &'a Path
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for &'a Path
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, Path>
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, Path>
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for OsStr
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for OsStr
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for &'a OsStr
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for &'a OsStr
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, OsStr>
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for Cow<'a, OsStr>
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl<'a, 'b> PartialOrd<PathBuf> for OsString
1.8.0 · source
impl<'a, 'b> PartialOrd<PathBuf> for OsString
1.8.0 · sourcefn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
source
fn partial_cmp(&self, other: &PathBuf) -> Option<Ordering>
sourceThis method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
source
fn lt(&self, other: &Rhs) -> bool
sourceThis method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
source
fn le(&self, other: &Rhs) -> bool
sourceThis method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
impl Eq for PathBuf
sourceAuto Trait Implementations
impl RefUnwindSafe for PathBuf
impl Send for PathBuf
impl Sync for PathBuf
impl Unpin for PathBuf
impl UnwindSafe for PathBuf
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
source
impl<T> BorrowMut<T> for T where
T: ?Sized,
sourcefn borrow_mut(&mut self) -> &mut T
const: unstable · source
fn borrow_mut(&mut self) -> &mut T
const: unstable · sourceMutably borrows from an owned value. Read more
impl<T> ToOwned for T where
T: Clone,
source
impl<T> ToOwned for T where
T: Clone,
sourcetype Owned = T
type Owned = T
The resulting type after obtaining ownership.
fn clone_into(&self, target: &mut T)
source
fn clone_into(&self, target: &mut T)
sourceUses borrowed data to replace owned data, usually by cloning. Read more