df: move Filesystem to filesystem.rs

Move the `Filesystem` struct into a new module `filesystem.rs`.

src/uu/df/src/df.rs

@@ -8,13 +8,12 @@
 // spell-checker:ignore itotal iused iavail ipcent pcent tmpfs squashfs lofs
 mod blocks;
 mod columns;
+mod filesystem;
 mod table;
 
 use uucore::error::{UResult, USimpleError};
 use uucore::format_usage;
-#[cfg(unix)]
-use uucore::fsext::statfs;
-use uucore::fsext::{read_fs_list, FsUsage, MountInfo};
+use uucore::fsext::{read_fs_list, MountInfo};
 
 use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 
@@ -23,6 +22,7 @@ use std::path::Path;
 
 use crate::blocks::{block_size_from_matches, BlockSize};
 use crate::columns::Column;
+use crate::filesystem::Filesystem;
 use crate::table::{DisplayRow, Header, Row};
 
 static ABOUT: &str = "Show information about the file system on which each FILE resides,\n\
@@ -136,36 +136,6 @@ impl Options {
     }
 }
 
-#[derive(Debug, Clone)]
-struct Filesystem {
-    mount_info: MountInfo,
-    usage: FsUsage,
-}
-
-impl Filesystem {
-    // TODO: resolve uuid in `mount_info.dev_name` if exists
-    fn new(mount_info: MountInfo) -> Option<Self> {
-        let _stat_path = if !mount_info.mount_dir.is_empty() {
-            mount_info.mount_dir.clone()
-        } else {
-            #[cfg(unix)]
-            {
-                mount_info.dev_name.clone()
-            }
-            #[cfg(windows)]
-            {
-                // On windows, we expect the volume id
-                mount_info.dev_id.clone()
-            }
-        };
-        #[cfg(unix)]
-        let usage = FsUsage::new(statfs(_stat_path).ok()?);
-        #[cfg(windows)]
-        let usage = FsUsage::new(Path::new(&_stat_path));
-        Some(Self { mount_info, usage })
-    }
-}
-
 /// Whether to display the mount info given the inclusion settings.
 fn is_included(mi: &MountInfo, opt: &Options) -> bool {
     // Don't show remote filesystems if `--local` has been given.

src/uu/df/src/filesystem.rs

@@ -0,0 +1,40 @@
+//  * This file is part of the uutils coreutils package.
+//  *
+//  * For the full copyright and license information, please view the LICENSE
+//  * file that was distributed with this source code.
+#[cfg(windows)]
+use std::path::Path;
+
+#[cfg(unix)]
+use uucore::fsext::statfs;
+use uucore::fsext::{FsUsage, MountInfo};
+
+#[derive(Debug, Clone)]
+pub(crate) struct Filesystem {
+    pub mount_info: MountInfo,
+    pub usage: FsUsage,
+}
+
+impl Filesystem {
+    // TODO: resolve uuid in `mount_info.dev_name` if exists
+    pub(crate) fn new(mount_info: MountInfo) -> Option<Self> {
+        let _stat_path = if !mount_info.mount_dir.is_empty() {
+            mount_info.mount_dir.clone()
+        } else {
+            #[cfg(unix)]
+            {
+                mount_info.dev_name.clone()
+            }
+            #[cfg(windows)]
+            {
+                // On windows, we expect the volume id
+                mount_info.dev_id.clone()
+            }
+        };
+        #[cfg(unix)]
+        let usage = FsUsage::new(statfs(_stat_path).ok()?);
+        #[cfg(windows)]
+        let usage = FsUsage::new(Path::new(&_stat_path));
+        Some(Self { mount_info, usage })
+    }
+}

src/uu/df/src/table.rs

@@ -12,7 +12,8 @@
 use number_prefix::NumberPrefix;
 
 use crate::columns::Column;
-use crate::{BlockSize, Filesystem, Options};
+use crate::filesystem::Filesystem;
+use crate::{BlockSize, Options};
 use uucore::fsext::{FsUsage, MountInfo};
 
 use std::fmt;