wip

src/archive/tar.rs

@@ -4,7 +4,7 @@ use std::{
     env,
     io::prelude::*,
     path::{Path, PathBuf},
-    sync::mpsc::{self, Receiver},
+    sync::mpsc::{self, Receiver, Sender},
     thread,
 };
 
@@ -15,13 +15,13 @@ use crate::{
     error::FinalError,
     info,
     list::FileInArchive,
-    utils::{self, Bytes, EscapedPathDisplay, FileVisibilityPolicy},
+    utils::{self, io::PrintMessage, Bytes, EscapedPathDisplay, FileVisibilityPolicy},
     warning,
 };
 
 /// Unpacks the archive given by `archive` into the folder given by `into`.
 /// Assumes that output_folder is empty
-pub fn unpack_archive(reader: Box<dyn Read>, output_folder: &Path, quiet: bool) -> crate::Result<usize> {
+pub fn unpack_archive(reader: Box<dyn Read>, output_folder: &Path, quiet: bool, log_sender: Sender<PrintMessage>) -> crate::Result<usize> {
     assert!(output_folder.read_dir().expect("dir exists").count() == 0);
     let mut archive = tar::Archive::new(reader);
 
@@ -36,12 +36,14 @@ pub fn unpack_archive(reader: Box<dyn Read>, output_folder: &Path, quiet: bool)
         // spoken text for users using screen readers, braille displays
         // and so on
         if !quiet {
-            info!(
-                inaccessible,
-                "{:?} extracted. ({})",
-                utils::strip_cur_dir(&output_folder.join(file.path()?)),
-                Bytes::new(file.size()),
-            );
+            log_sender.send(PrintMessage { 
+                contents: format!(
+                    "{:?} extracted. ({})",
+                    utils::strip_cur_dir(&output_folder.join(file.path()?)),
+                    Bytes::new(file.size()),
+                ), 
+                accessible: false 
+            }).unwrap();
 
             files_unpacked += 1;
         }

src/commands/decompress.rs

@@ -1,7 +1,7 @@
 use std::{
     io::{self, BufReader, Read},
     ops::ControlFlow,
-    path::{Path, PathBuf},
+    path::{Path, PathBuf}, sync::mpsc::Sender,
 };
 
 use fs_err as fs;
@@ -14,7 +14,7 @@ use crate::{
         Extension,
     },
     info,
-    utils::{self, nice_directory_display, user_wants_to_continue},
+    utils::{self, io::PrintMessage, nice_directory_display, user_wants_to_continue},
     QuestionAction, QuestionPolicy, BUFFER_CAPACITY,
 };
 
@@ -31,6 +31,7 @@ pub fn decompress_file(
     output_file_path: PathBuf,
     question_policy: QuestionPolicy,
     quiet: bool,
+    log_sender: Sender<PrintMessage>,
 ) -> crate::Result<()> {
     assert!(output_dir.exists());
     let reader = fs::File::open(input_file_path)?;
@@ -53,6 +54,7 @@ pub fn decompress_file(
             output_dir,
             &output_file_path,
             question_policy,
+            log_sender.clone(),
         )? {
             files
         } else {
@@ -63,12 +65,14 @@ pub fn decompress_file(
         // having a final status message is important especially in an accessibility context
         // as screen readers may not read a commands exit code, making it hard to reason
         // about whether the command succeeded without such a message
-        info!(
-            accessible,
-            "Successfully decompressed archive in {} ({} files).",
-            nice_directory_display(output_dir),
-            files_unpacked
-        );
+        log_sender.send(PrintMessage { 
+            contents: format!(
+                "Successfully decompressed archive in {} ({} files).",
+                nice_directory_display(output_dir),
+                files_unpacked
+            ), 
+            accessible: true
+        }).unwrap();
 
         return Ok(());
     }
@@ -112,10 +116,11 @@ pub fn decompress_file(
         }
         Tar => {
             if let ControlFlow::Continue(files) = smart_unpack(
-                |output_dir| crate::archive::tar::unpack_archive(reader, output_dir, quiet),
+                |output_dir| crate::archive::tar::unpack_archive(reader, output_dir, quiet, log_sender.clone()),
                 output_dir,
                 &output_file_path,
                 question_policy,
+                log_sender.clone(),
             )? {
                 files
             } else {
@@ -140,6 +145,7 @@ pub fn decompress_file(
                 output_dir,
                 &output_file_path,
                 question_policy,
+                log_sender.clone(),
             )? {
                 files
             } else {
@@ -158,7 +164,7 @@ pub fn decompress_file(
             };
 
             if let ControlFlow::Continue(files) =
-                smart_unpack(unpack_fn, output_dir, &output_file_path, question_policy)?
+                smart_unpack(unpack_fn, output_dir, &output_file_path, question_policy, log_sender.clone())?
             {
                 files
             } else {
@@ -186,6 +192,7 @@ pub fn decompress_file(
                 output_dir,
                 &output_file_path,
                 question_policy,
+                log_sender.clone(),
             )? {
                 files
             } else {
@@ -198,12 +205,17 @@ pub fn decompress_file(
     // having a final status message is important especially in an accessibility context
     // as screen readers may not read a commands exit code, making it hard to reason
     // about whether the command succeeded without such a message
-    info!(
-        accessible,
-        "Successfully decompressed archive in {}.",
-        nice_directory_display(output_dir)
-    );
-    info!(accessible, "Files unpacked: {}", files_unpacked);
+    log_sender.send(PrintMessage { 
+        contents: format!(
+            "Successfully decompressed archive in {}.",
+            nice_directory_display(output_dir)
+        ), 
+        accessible: true 
+    }).unwrap();
+    log_sender.send(PrintMessage { 
+        contents: format!("Files unpacked: {}", files_unpacked), 
+        accessible: true 
+    }).unwrap();
 
     Ok(())
 }
@@ -218,15 +230,19 @@ fn smart_unpack(
     output_dir: &Path,
     output_file_path: &Path,
     question_policy: QuestionPolicy,
+    log_sender: Sender<PrintMessage>,
 ) -> crate::Result<ControlFlow<(), usize>> {
     assert!(output_dir.exists());
     let temp_dir = tempfile::tempdir_in(output_dir)?;
     let temp_dir_path = temp_dir.path();
-    info!(
-        accessible,
-        "Created temporary directory {} to hold decompressed elements.",
-        nice_directory_display(temp_dir_path)
-    );
+
+    log_sender.send(PrintMessage { 
+        contents: format!(
+            "Created temporary directory {} to hold decompressed elements.",
+            nice_directory_display(temp_dir_path)
+        ), 
+        accessible: true 
+    }).unwrap();
 
     let files = unpack_fn(temp_dir_path)?;
 
@@ -244,12 +260,15 @@ fn smart_unpack(
             return Ok(ControlFlow::Break(()));
         }
         fs::rename(&file_path, &correct_path)?;
-        info!(
-            accessible,
-            "Successfully moved {} to {}.",
-            nice_directory_display(&file_path),
-            nice_directory_display(&correct_path)
-        );
+
+        log_sender.send(PrintMessage { 
+            contents: format!(
+                "Successfully moved {} to {}.",
+                nice_directory_display(&file_path),
+                nice_directory_display(&correct_path)
+            ), 
+            accessible: true
+        }).unwrap();
     } else {
         // Multiple files in the root directory, so:
         // Rename the temporary directory to the archive name, which is output_file_path
@@ -258,12 +277,14 @@ fn smart_unpack(
             return Ok(ControlFlow::Break(()));
         }
         fs::rename(temp_dir_path, output_file_path)?;
-        info!(
-            accessible,
-            "Successfully moved {} to {}.",
-            nice_directory_display(temp_dir_path),
-            nice_directory_display(output_file_path)
-        );
+        log_sender.send(PrintMessage { 
+            contents: format!(
+                "Successfully moved {} to {}.",
+                nice_directory_display(temp_dir_path),
+                nice_directory_display(output_file_path)
+            ),
+            accessible: true 
+        }).unwrap();
     }
 
     Ok(ControlFlow::Continue(files))

src/commands/mod.rs

@@ -4,7 +4,7 @@ mod compress;
 mod decompress;
 mod list;
 
-use std::{ops::ControlFlow, path::PathBuf};
+use std::{ops::ControlFlow, path::PathBuf, sync::{mpsc::channel, Arc, Condvar, Mutex}};
 
 use rayon::prelude::{IndexedParallelIterator, IntoParallelRefIterator, ParallelIterator};
 use utils::colors;
@@ -17,7 +17,7 @@ use crate::{
     extension::{self, parse_format},
     info,
     list::ListOptions,
-    utils::{self, to_utf, EscapedPathDisplay, FileVisibilityPolicy},
+    utils::{self, io::PrintMessage, to_utf, EscapedPathDisplay, FileVisibilityPolicy},
     warning, CliArgs, QuestionPolicy,
 };
 
@@ -169,6 +169,27 @@ pub fn run(
                 PathBuf::from(".")
             };
 
+            let (log_sender, log_receiver) = channel::<PrintMessage>();
+
+            let pair = Arc::new((Mutex::new(false), Condvar::new()));
+            let pair2 = Arc::clone(&pair);
+
+            // Log received messages until all senders are dropped
+            rayon::spawn(move || {
+                loop {
+                    let msg = log_receiver.recv();
+                    if let Ok(msg) = msg {
+                        println!("{}", msg.contents);
+                    } else {
+                        let (lock, cvar) = &*pair2;
+                        let mut flushed = lock.lock().unwrap();
+                        *flushed = true;
+                        cvar.notify_one();
+                        break;
+                    }
+                }
+            });
+
             files
                 .par_iter()
                 .zip(formats)
@@ -182,8 +203,20 @@ pub fn run(
                         output_file_path,
                         question_policy,
                         args.quiet,
+                        log_sender.clone(),
                     )
                 })?;
+
+                // Drop our sender clones so when all threads are done, no clones are left
+                drop(log_sender);
+
+                // Prevent the main thread from exiting until the background thread handling the
+                // logging has set `flushed` to true.
+                let (lock, cvar) = &*pair;
+                let mut flushed = lock.lock().unwrap();
+                while !*flushed {
+                    flushed = cvar.wait(flushed).unwrap();
+                }
         }
         Subcommand::List { archives: files, tree } => {
             let mut formats = vec![];

src/utils/io.rs

@@ -0,0 +1,5 @@
+#[derive(Debug)]
+pub struct PrintMessage {
+  pub contents: String,
+  pub accessible: bool,
+}

src/utils/mod.rs

@@ -7,6 +7,7 @@ pub mod colors;
 mod file_visibility;
 mod formatting;
 mod fs;
+pub mod io;
 mod question;
 
 pub use file_visibility::FileVisibilityPolicy;

src/utils/question.rs

@@ -142,6 +142,7 @@ impl<'a> Confirmation<'a> {
                     *colors::RESET
                 );
             }
+            let _stdout_lock = io::stdout().lock();
             io::stdout().flush()?;
 
             let mut answer = String::new();