Add ctrl_c to RunnablePerItemContext. (#1239)

Also, this commit makes `ls` a per-item command.

A command that processes things item by item may still take some time to stream
out the results from a single item. For example, `ls` on a directory with a lot
of files could be interrupted in the middle of showing all of these files.

src/cli.rs

@@ -251,7 +251,7 @@ pub async fn cli() -> Result<(), Box<dyn Error>> {
         context.add_commands(vec![
             // System/file operations
             whole_stream_command(Pwd),
-            whole_stream_command(Ls),
+            per_item_command(Ls),
             whole_stream_command(Cd),
             whole_stream_command(Env),
             per_item_command(Remove),

src/commands/command.rs

@@ -42,6 +42,7 @@ pub trait CallInfoExt {
     fn process<'de, T: Deserialize<'de>>(
         &self,
         shell_manager: &ShellManager,
+        ctrl_c: Arc<AtomicBool>,
         callback: fn(T, &RunnablePerItemContext) -> Result<OutputStream, ShellError>,
     ) -> Result<RunnablePerItemArgs<T>, ShellError>;
 }
@@ -50,6 +51,7 @@ impl CallInfoExt for CallInfo {
     fn process<'de, T: Deserialize<'de>>(
         &self,
         shell_manager: &ShellManager,
+        ctrl_c: Arc<AtomicBool>,
         callback: fn(T, &RunnablePerItemContext) -> Result<OutputStream, ShellError>,
     ) -> Result<RunnablePerItemArgs<T>, ShellError> {
         let mut deserializer = ConfigDeserializer::from_call_info(self.clone());
@@ -59,6 +61,7 @@ impl CallInfoExt for CallInfo {
             context: RunnablePerItemContext {
                 shell_manager: shell_manager.clone(),
                 name: self.name_tag.clone(),
+                ctrl_c,
             },
             callback,
         })
@@ -219,6 +222,7 @@ impl CommandArgs {
 pub struct RunnablePerItemContext {
     pub shell_manager: ShellManager,
     pub name: Tag,
+    pub ctrl_c: Arc<AtomicBool>,
 }
 
 pub struct RunnableContext {

src/commands/cp.rs

@@ -38,7 +38,9 @@ impl PerItemCommand for Cpy {
         raw_args: &RawCommandArgs,
         _input: Value,
     ) -> Result<OutputStream, ShellError> {
-        call_info.process(&raw_args.shell_manager, cp)?.run()
+        call_info
+            .process(&raw_args.shell_manager, raw_args.ctrl_c.clone(), cp)?
+            .run()
     }
 }
 

src/commands/ls.rs

@@ -1,7 +1,7 @@
-use crate::commands::WholeStreamCommand;
+use crate::commands::command::RunnablePerItemContext;
 use crate::prelude::*;
 use nu_errors::ShellError;
-use nu_protocol::{Signature, SyntaxShape};
+use nu_protocol::{CallInfo, Signature, SyntaxShape, Value};
 use nu_source::Tagged;
 use std::path::PathBuf;
 
@@ -9,11 +9,11 @@ pub struct Ls;
 
 #[derive(Deserialize)]
 pub struct LsArgs {
-    path: Option<Tagged<PathBuf>>,
-    full: bool,
+    pub path: Option<Tagged<PathBuf>>,
+    pub full: bool,
 }
 
-impl WholeStreamCommand for Ls {
+impl PerItemCommand for Ls {
     fn name(&self) -> &str {
         "ls"
     }
@@ -34,14 +34,17 @@ impl WholeStreamCommand for Ls {
 
     fn run(
         &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
+        call_info: &CallInfo,
+        _registry: &CommandRegistry,
+        raw_args: &RawCommandArgs,
+        _input: Value,
     ) -> Result<OutputStream, ShellError> {
-        args.process(registry, ls)?.run()
-        // ls(args, registry)
+        call_info
+            .process(&raw_args.shell_manager, raw_args.ctrl_c.clone(), ls)?
+            .run()
     }
 }
 
-fn ls(LsArgs { path, full }: LsArgs, context: RunnableContext) -> Result<OutputStream, ShellError> {
-    context.shell_manager.ls(path, &context, full)
+fn ls(args: LsArgs, context: &RunnablePerItemContext) -> Result<OutputStream, ShellError> {
+    context.shell_manager.ls(args, context)
 }

src/commands/mkdir.rs

@@ -33,7 +33,9 @@ impl PerItemCommand for Mkdir {
         raw_args: &RawCommandArgs,
         _input: Value,
     ) -> Result<OutputStream, ShellError> {
-        call_info.process(&raw_args.shell_manager, mkdir)?.run()
+        call_info
+            .process(&raw_args.shell_manager, raw_args.ctrl_c.clone(), mkdir)?
+            .run()
     }
 }
 

src/commands/mv.rs

@@ -44,7 +44,9 @@ impl PerItemCommand for Move {
         raw_args: &RawCommandArgs,
         _input: Value,
     ) -> Result<OutputStream, ShellError> {
-        call_info.process(&raw_args.shell_manager, mv)?.run()
+        call_info
+            .process(&raw_args.shell_manager, raw_args.ctrl_c.clone(), mv)?
+            .run()
     }
 }
 

src/commands/rm.rs

@@ -41,7 +41,9 @@ impl PerItemCommand for Remove {
         raw_args: &RawCommandArgs,
         _input: Value,
     ) -> Result<OutputStream, ShellError> {
-        call_info.process(&raw_args.shell_manager, rm)?.run()
+        call_info
+            .process(&raw_args.shell_manager, raw_args.ctrl_c.clone(), rm)?
+            .run()
     }
 }
 

src/prelude.rs

@@ -72,6 +72,7 @@ pub(crate) use nu_protocol::{errln, outln};
 
 pub(crate) use crate::commands::command::{
     CallInfoExt, CommandArgs, PerItemCommand, RawCommandArgs, RunnableContext,
+    RunnablePerItemContext,
 };
 pub(crate) use crate::context::CommandRegistry;
 pub(crate) use crate::context::Context;

src/shell/filesystem_shell.rs

@@ -1,5 +1,6 @@
 use crate::commands::command::EvaluatedWholeStreamCommandArgs;
 use crate::commands::cp::CopyArgs;
+use crate::commands::ls::LsArgs;
 use crate::commands::mkdir::MkdirArgs;
 use crate::commands::mv::MoveArgs;
 use crate::commands::rm::RemoveArgs;
@@ -10,7 +11,6 @@ use crate::shell::shell::Shell;
 use crate::utils::FileStructure;
 use nu_errors::ShellError;
 use nu_protocol::{Primitive, ReturnSuccess, UntaggedValue};
-use nu_source::Tagged;
 use rustyline::completion::FilenameCompleter;
 use rustyline::hint::{Hinter, HistoryHinter};
 use std::path::{Path, PathBuf};
@@ -84,14 +84,13 @@ impl Shell for FilesystemShell {
 
     fn ls(
         &self,
-        pattern: Option<Tagged<PathBuf>>,
-        context: &RunnableContext,
-        full: bool,
+        LsArgs { path, full }: LsArgs,
+        context: &RunnablePerItemContext,
     ) -> Result<OutputStream, ShellError> {
         let cwd = self.path();
         let mut full_path = PathBuf::from(self.path());
 
-        if let Some(value) = &pattern {
+        if let Some(value) = &path {
             full_path.push((*value).as_ref())
         }
 
@@ -106,7 +105,7 @@ impl Shell for FilesystemShell {
                 let entries = std::fs::read_dir(&entry);
                 let entries = match entries {
                     Err(e) => {
-                        if let Some(s) = pattern {
+                        if let Some(s) = path {
                             return Err(ShellError::labeled_error(
                                 e.to_string(),
                                 e.to_string(),
@@ -160,7 +159,7 @@ impl Shell for FilesystemShell {
         let entries = match glob::glob(&full_path.to_string_lossy()) {
             Ok(files) => files,
             Err(_) => {
-                if let Some(source) = pattern {
+                if let Some(source) = path {
                     return Err(ShellError::labeled_error(
                         "Invalid pattern",
                         "Invalid pattern",

src/shell/help_shell.rs

@@ -1,5 +1,6 @@
 use crate::commands::command::EvaluatedWholeStreamCommandArgs;
 use crate::commands::cp::CopyArgs;
+use crate::commands::ls::LsArgs;
 use crate::commands::mkdir::MkdirArgs;
 use crate::commands::mv::MoveArgs;
 use crate::commands::rm::RemoveArgs;
@@ -10,7 +11,6 @@ use nu_errors::ShellError;
 use nu_protocol::{
     Primitive, ReturnSuccess, ShellTypeName, TaggedDictBuilder, UntaggedValue, Value,
 };
-use nu_source::Tagged;
 use std::ffi::OsStr;
 use std::path::PathBuf;
 
@@ -135,9 +135,8 @@ impl Shell for HelpShell {
 
     fn ls(
         &self,
-        _pattern: Option<Tagged<PathBuf>>,
-        _context: &RunnableContext,
-        _full: bool,
+        _args: LsArgs,
+        _context: &RunnablePerItemContext,
     ) -> Result<OutputStream, ShellError> {
         Ok(self.commands().map(ReturnSuccess::value).to_output_stream())
     }

src/shell/shell.rs

@@ -1,12 +1,12 @@
 use crate::commands::command::EvaluatedWholeStreamCommandArgs;
 use crate::commands::cp::CopyArgs;
+use crate::commands::ls::LsArgs;
 use crate::commands::mkdir::MkdirArgs;
 use crate::commands::mv::MoveArgs;
 use crate::commands::rm::RemoveArgs;
 use crate::prelude::*;
 use crate::stream::OutputStream;
 use nu_errors::ShellError;
-use nu_source::Tagged;
 use std::path::PathBuf;
 
 pub trait Shell: std::fmt::Debug {
@@ -15,9 +15,8 @@ pub trait Shell: std::fmt::Debug {
 
     fn ls(
         &self,
-        pattern: Option<Tagged<PathBuf>>,
-        context: &RunnableContext,
-        full: bool,
+        args: LsArgs,
+        context: &RunnablePerItemContext,
     ) -> Result<OutputStream, ShellError>;
     fn cd(&self, args: EvaluatedWholeStreamCommandArgs) -> Result<OutputStream, ShellError>;
     fn cp(&self, args: CopyArgs, name: Tag, path: &str) -> Result<OutputStream, ShellError>;

src/shell/shell_manager.rs

@@ -1,5 +1,6 @@
 use crate::commands::command::{EvaluatedWholeStreamCommandArgs, RunnablePerItemContext};
 use crate::commands::cp::CopyArgs;
+use crate::commands::ls::LsArgs;
 use crate::commands::mkdir::MkdirArgs;
 use crate::commands::mv::MoveArgs;
 use crate::commands::rm::RemoveArgs;
@@ -8,7 +9,6 @@ use crate::shell::filesystem_shell::FilesystemShell;
 use crate::shell::shell::Shell;
 use crate::stream::OutputStream;
 use nu_errors::ShellError;
-use nu_source::Tagged;
 use std::error::Error;
 use std::path::PathBuf;
 use std::sync::atomic::{AtomicUsize, Ordering};
@@ -202,12 +202,11 @@ impl ShellManager {
 
     pub fn ls(
         &self,
-        path: Option<Tagged<PathBuf>>,
-        context: &RunnableContext,
-        full: bool,
+        args: LsArgs,
+        context: &RunnablePerItemContext,
     ) -> Result<OutputStream, ShellError> {
         if let Ok(shells) = self.shells.lock() {
-            shells[self.current_shell()].ls(path, context, full)
+            shells[self.current_shell()].ls(args, context)
         } else {
             Err(ShellError::untagged_runtime_error(
                 "Internal error: could not lock shells ring buffer (ls)",

src/shell/value_shell.rs

@@ -1,5 +1,6 @@
 use crate::commands::command::EvaluatedWholeStreamCommandArgs;
 use crate::commands::cp::CopyArgs;
+use crate::commands::ls::LsArgs;
 use crate::commands::mkdir::MkdirArgs;
 use crate::commands::mv::MoveArgs;
 use crate::commands::rm::RemoveArgs;
@@ -8,7 +9,6 @@ use crate::shell::shell::Shell;
 use crate::utils::ValueStructure;
 use nu_errors::ShellError;
 use nu_protocol::{ReturnSuccess, ShellTypeName, UntaggedValue, Value};
-use nu_source::Tagged;
 use std::ffi::OsStr;
 use std::path::{Path, PathBuf};
 
@@ -90,14 +90,13 @@ impl Shell for ValueShell {
 
     fn ls(
         &self,
-        target: Option<Tagged<PathBuf>>,
-        context: &RunnableContext,
-        _full: bool,
+        LsArgs { path, .. }: LsArgs,
+        context: &RunnablePerItemContext,
     ) -> Result<OutputStream, ShellError> {
         let mut full_path = PathBuf::from(self.path());
         let name_tag = context.name.clone();
 
-        if let Some(value) = &target {
+        if let Some(value) = &path {
             full_path.push(value.as_ref());
         }
 
@@ -105,7 +104,7 @@ impl Shell for ValueShell {
         value_system.walk_decorate(&self.value)?;
 
         if !value_system.exists(&full_path) {
-            if let Some(target) = &target {
+            if let Some(target) = &path {
                 return Err(ShellError::labeled_error(
                     "Can not list entries inside",
                     "No such path exists",