Add the file parts subcommand.

source/cli/mod.rs

@@ -71,4 +71,23 @@ pub enum FileSubcommand {
     #[arg()]
     file: PathBuf,
   },
+
+  /// Extract parts of a file.
+  Parts {
+    /// Print the base name of the file (without the extension).
+    #[arg(long, group = "part-to-print", default_value = "false")]
+    basename: bool,
+
+    /// Print the directory the file is in.
+    #[arg(long, group = "part-to-print", default_value = "false")]
+    directory: bool,
+
+    /// Print the file extension (without the leading dot).
+    #[arg(long, group = "part-to-print", default_value = "false")]
+    extension: bool,
+
+    /// The file to include parts from.
+    #[arg()]
+    file: PathBuf,
+  },
 }

source/cli/run.rs

@@ -8,6 +8,7 @@ use {
     logging::append_line_to_file,
   },
   chrono::{SecondsFormat, Utc},
+  std::{ffi::OsStr, path::Path},
 };
 
 /// Parse the CLI arguments and execute them.
@@ -36,6 +37,34 @@ pub fn run() {
           std::process::exit(1);
         }
       }
+
+      FileSubcommand::Parts {
+        basename,
+        directory,
+        extension,
+        file,
+      } => {
+        if basename {
+          print!(
+            "{}",
+            file.file_stem().and_then(OsStr::to_str).unwrap_or_default()
+          );
+        }
+
+        if directory {
+          print!(
+            "{}",
+            file.parent().and_then(Path::to_str).unwrap_or_default()
+          );
+        }
+
+        if extension {
+          print!(
+            "{}",
+            file.extension().and_then(OsStr::to_str).unwrap_or_default()
+          );
+        }
+      }
     },
 
     Log { data_to_log, file } => {