Struct MemoryFileSystem 

pub struct MemoryFileSystem { /* private fields */ }

File system that stores all content in memory.

The file system supports files and directories. Paths are case-sensitive.

The implementation doesn’t aim at fully capturing the behavior of a real file system. The implementation intentionally doesn’t support:

• symlinks
• hardlinks
• permissions: All files and directories have the permission 0755.

Use a tempdir with the real file system to test these advanced file system features and behavior.

Implementations

impl MemoryFileSystem

pub fn new() -> Self

pub fn with_current_directory(cwd: impl AsRef<SystemPath>) -> Self

Creates a new, empty in memory file system with the given current working directory.

pub fn current_directory(&self) -> &SystemPath

pub fn metadata(&self, path: impl AsRef<SystemPath>) -> Result<Metadata>

pub fn canonicalize( &self, path: impl AsRef<SystemPath>, ) -> Result<SystemPathBuf>

pub fn is_file(&self, path: impl AsRef<SystemPath>) -> bool

pub fn is_directory(&self, path: impl AsRef<SystemPath>) -> bool

pub fn is_executable(&self, path: &SystemPath) -> bool

pub fn read_to_string(&self, path: impl AsRef<SystemPath>) -> Result<String>

pub fn exists(&self, path: &SystemPath) -> bool

pub fn virtual_path_exists(&self, path: &SystemVirtualPath) -> bool

pub fn write_file( &self, path: impl AsRef<SystemPath>, content: impl AsRef<[u8]>, ) -> Result<()>

Stores a new file in the file system.

The operation overrides the content for an existing file with the same normalized path.

pub fn write_files_all<P, C>( &self, files: impl IntoIterator<Item = (P, C)>, ) -> Result<()>

where P: AsRef<SystemPath>, C: ToString,

Writes the files to the file system.

The operation overrides existing files with the same normalized path.

Enclosing directories are automatically created if they don’t exist.

pub fn write_file_all( &self, path: impl AsRef<SystemPath>, content: impl AsRef<[u8]>, ) -> Result<()>

Stores a new file in the file system.

The operation overrides the content for an existing file with the same normalized path.

Enclosing directories are automatically created if they don’t exist.

pub fn write_virtual_file( &self, path: impl AsRef<SystemVirtualPath>, content: impl AsRef<[u8]>, )

Stores a new virtual file in the file system.

The operation overrides the content for an existing virtual file with the same path.

pub fn walk_directory( &self, path: impl AsRef<SystemPath>, ) -> WalkDirectoryBuilder

Returns a builder for walking the directory tree of path.

The only files that are ignored when setting WalkDirectoryBuilder::standard_filters are hidden files (files with a name starting with a .).

pub fn remove_file(&self, path: impl AsRef<SystemPath>) -> Result<()>

pub fn remove_virtual_file( &self, path: impl AsRef<SystemVirtualPath>, ) -> Result<()>

pub fn touch(&self, path: impl AsRef<SystemPath>) -> Result<()>

Sets the last modified timestamp of the file stored at path to now.

Creates a new file if the file at path doesn’t exist.

pub fn create_directory_all(&self, path: impl AsRef<SystemPath>) -> Result<()>

Creates a directory at path. All enclosing directories are created if they don’t exist.

pub fn remove_directory(&self, path: impl AsRef<SystemPath>) -> Result<()>

Deletes the directory at path.

Errors

• If the directory is not empty
• The path is not a directory
• The path does not exist

pub fn read_directory( &self, path: impl AsRef<SystemPath>, ) -> Result<ReadDirectory>

pub fn remove_all(&self)

Removes all files and directories except the current working directory.

Trait Implementations

impl Clone for MemoryFileSystem

fn clone(&self) -> MemoryFileSystem

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MemoryFileSystem

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MemoryFileSystem

fn default() -> Self

Returns the “default value” for a type.