1 files changed, 20 insertions(+), 3 deletions(-)

M src/main.rs

@@ 28,7 28,8 @@ enum Error {
     Adapter(adapter::Error),
     WriteOut(std::io::Error),
     TerminationHandlerSetting(ctrlc::Error),
-    FileOpening(std::io::Error),
+    InputFileOpening(std::io::Error),
+    OutputFileCreating(std::io::Error),
 }
 
 type Result<T> = std::result::Result<T, Error>;


@@ 77,6 78,14 @@ fn retrofit() -> Result<()> {
                 .default_value("8bit"),
         )
         .arg(
+            Arg::with_name("output")
+                .short("o")
+                .long("output")
+                .value_name("FILE")
+                .help("Redirects the output to a file instead of the standard output")
+                .takes_value(true)
+        )
+        .arg(
             Arg::with_name("ice-colors")
                 .short("i")
                 .long("ice-colors")


@@ 109,7 118,7 @@ fn retrofit() -> Result<()> {
 
     let source = match matches.value_of("FILE") {
         Some(filename) => {
-            let file = File::open(filename).map_err(Error::FileOpening)?;
+            let file = File::open(filename).map_err(Error::InputFileOpening)?;
             Box::new(file) as Box<dyn Read>
         }
         None => Box::new(stdin()) as Box<dyn Read>,


@@ 120,7 129,15 @@ fn retrofit() -> Result<()> {
     let hide_cursor = baud.is_some() || matches.occurrences_of("hide-cursor") > 0;
     let ice_colors = matches.occurrences_of("ice-colors") > 0;
 
-    let mut output = BufWriter::new(stdout());
+    let target = match matches.value_of("output") {
+        Some(filename) => {
+            let file = File::create(filename).map_err(Error::OutputFileCreating)?;
+            Box::new(file) as Box<dyn Write>
+        }
+        None => Box::new(stdout()) as Box<dyn Write>
+    };
+
+    let mut output = BufWriter::new(target);
 
     BufReader::new(source)
         .bytes()