refactor(fs): use type aliases

README.md

@@ -4,7 +4,7 @@ Provides injectable Filesystem and Network resources to make code more testable.
 
 #### std::fs alternatives
 
-- [ ] `std::fs::canonicalize` - `path(path).canonicalize()` - Returns the canonical, absolute form of a path with all intermediate components normalized and symbolic links resolved.
+- [x] `std::fs::canonicalize` - `path(path).canonicalize()` - Returns the canonical, absolute form of a path with all intermediate components normalized and symbolic links resolved.
 - [ ] `std::fs::copy` - `file(path).copy(target)` - Copies the contents of one file to another. This function will also copy the permission bits of the original file to the destination file.
 - [x] `std::fs::create_dir` - `dir(path).create()` - Creates a new, empty directory at the provided path
 - [x] `std::fs::create_dir_all` - `dir(path).create_all()` - Recursively create a directory and all of its parent components if they are missing.

src/fs/dir.rs

@@ -3,10 +3,10 @@ use crate::fs::{DirItem, DirItemIterator, Result};
 
 use super::{
     path::{DirMarker, PathReal},
-    Error, FileMarker, PathMarker,
+    DirHandle, Error, FileMarker, PathMarker,
 };
 
-impl<'base, 'path> PathReal<'base, 'path, DirMarker> {
+impl<'base, 'path> DirHandle<'base, 'path> {
     /// Creates a new, empty directory at the path
     ///
     /// Wrapper for [std::fs::create_dir]

src/fs/file.rs

@@ -4,10 +4,10 @@ use crate::fs::Result;
 use super::{
     path::{FileMarker, PathReal},
     reader::Reader,
-    Error,
+    Error, FileHandle,
 };
 
-impl<'base, 'path> PathReal<'base, 'path, FileMarker> {
+impl<'base, 'path> FileHandle<'base, 'path> {
     /// Returns a [Reader] for the file.
     ///
     /// ```
@@ -41,4 +41,25 @@ impl<'base, 'path> PathReal<'base, 'path, FileMarker> {
         self.check_error()?;
         std::fs::write(self.as_pathbuf(), contents).map_err(Error::Io)
     }
+
+    /// Copies the contents of a file to another file.
+    ///
+    /// Wrapper for [std::fs::copy]
+    ///
+    /// ```
+    /// # fn try_main() -> kxio::fs::Result<()> {
+    /// let fs = kxio::fs::temp()?;
+    /// let src_path = fs.base().join("foo");
+    /// let dest_path = fs.base().join("bar");
+    /// let src = fs.file(&src_path);
+    /// # fs.file(&dest_path).write("new file contents")?;
+    /// let dest = fs.file(&dest_path);
+    /// src.copy(&dest)?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn copy(&self, dest: &PathReal<'base, 'path, FileMarker>) -> Result<u64> {
+        self.check_error()?;
+        std::fs::copy(self.as_pathbuf(), dest.as_pathbuf()).map_err(Error::Io)
+    }
 }

src/fs/path.rs

@@ -201,6 +201,25 @@ impl<'base, 'path, T: PathType> PathReal<'base, 'path, T> {
             Ok(None)
         }
     }
+
+    /// Returns the canonical, absolute form of the path with all intermediate
+    /// components normalized and symbolic links resolved.
+    ///
+    /// ```
+    /// # use kxio::fs::Result;
+    /// # fn main() -> Result<()> {
+    /// let fs = kxio::fs::temp()?;
+    /// let path = fs.base().join("foo");
+    /// #    fs.dir(&path).create()?;
+    /// let dir = fs.path(&path);
+    /// let canonical = dir.canonicalize()?;
+    /// #    Ok(())
+    /// # }
+    /// ```
+    pub fn canonicalize(&self) -> Result<PathBuf> {
+        self.check_error()?;
+        self.as_pathbuf().canonicalize().map_err(Error::Io)
+    }
 }
 impl From<PathReal<'_, '_, PathMarker>> for PathBuf {
     fn from(path: PathReal<PathMarker>) -> Self {