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Small restructuring

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This commit is contained in:
Yehuda Katz 2019-05-22 21:30:43 -07:00
parent 261d7a793f
commit 31dd579d6f
17 changed files with 354 additions and 274 deletions
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91
Cargo.lock generated
View File

@ -651,16 +651,72 @@ version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "futures"
version = "0.1.27"
name = "futures-channel-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "futures-core-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "futures-core"
version = "0.2.1"
name = "futures-executor-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-channel-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-util-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
"pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "futures-io-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "futures-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"futures-channel-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-executor-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-io-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-sink-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-util-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "futures-sink-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"futures-channel-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "futures-util-preview"
version = "0.3.0-alpha.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"futures-channel-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-io-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-sink-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
"slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -859,12 +915,12 @@ dependencies = [
"cursive 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
"derive-new 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
"dunce 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
"futures 0.1.27 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"futures-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)",
"indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
"itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
"nom 5.0.0-beta1 (registry+https://github.com/rust-lang/crates.io-index)",
"ordered-float 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
"pancurses 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)",
"prettyprint 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
"prettytable-rs 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
"rustyline 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@ -1031,6 +1087,11 @@ dependencies = [
"libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "pin-utils"
version = "0.1.0-alpha.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "pkg-config"
version = "0.3.14"
@ -1395,6 +1456,11 @@ dependencies = [
"libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "slab"
version = "0.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "smallvec"
version = "0.6.9"
@ -1775,8 +1841,13 @@ dependencies = [
"checksum flate2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f87e68aa82b2de08a6e037f1385455759df6e445a8df5e005b4297191dbf18aa"
"checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
"checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
"checksum futures 0.1.27 (registry+https://github.com/rust-lang/crates.io-index)" = "a2037ec1c6c1c4f79557762eab1f7eae1f64f6cb418ace90fae88f0942b60139"
"checksum futures-core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7455c91eb2eae38f33b013f77ebe766c75761af333efd9d550e154045c63e225"
"checksum futures-channel-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4cd523712fc272e9b714669165a2832debee5a5b7e409bfccdc7c0d5cd0cf07a"
"checksum futures-core-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "719770f328642b657b849856bb5a607db9538dd5bb3000122e5ead55d0a58c36"
"checksum futures-executor-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "315dc58c908535d059576a329b86cd185933433382cfcd394fb2fa353330de03"
"checksum futures-io-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "cca0bf7a1f39c9d32b797b0def93d5932aa71796236aad6b549bac6f7df159a3"
"checksum futures-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "fcfeac5f016a4b5835bb93eb7961f50a64f0e001207562703d9ddf4109d7b263"
"checksum futures-sink-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "49dcfdacd6b5974ca0b9b78bc38ffd1071da0206179735c3df82e279f5b784e4"
"checksum futures-util-preview 0.3.0-alpha.16 (registry+https://github.com/rust-lang/crates.io-index)" = "f7a0451b9c5047c2b9ab93425ffd0793165511e93c04b977cd45fbd41c6e34b2"
"checksum hashbrown 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "570178d5e4952010d138b0f1d581271ff3a02406d990f887d1e87e3d6e43b0ac"
"checksum humantime 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3ca7e5f2e110db35f93b837c81797f3714500b81d517bf20c431b16d3ca4f114"
"checksum ident_case 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
@ -1819,6 +1890,7 @@ dependencies = [
"checksum parking_lot_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cb88cb1cb3790baa6776844f968fea3be44956cf184fa1be5a03341f5491278c"
"checksum parse-zoneinfo 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "089a398ccdcdd77b8c38909d5a1e4b67da1bc4c9dbfe6d5b536c828eddb779e5"
"checksum pdcurses-sys 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "084dd22796ff60f1225d4eb6329f33afaf4c85419d51d440ab6b8c6f4529166b"
"checksum pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
"checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
"checksum plist 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f4739851c08dd9a62a78beff2edf1a438517268b2c563c42fc6d9d3139e42d2a"
"checksum prettyprint 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2705417f8aa07cb6308db42e55623479c1c9667942a4d5e4174c684e5da5590d"
@ -1861,6 +1933,7 @@ dependencies = [
"checksum shell-words 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "39acde55a154c4cd3ae048ac78cc21c25f3a0145e44111b523279113dce0d94a"
"checksum signal-hook 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "72ab58f1fda436857e6337dcb6a5aaa34f16c5ddc87b3a8b6ef7a212f90b9c5a"
"checksum signal-hook-registry 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cded4ffa32146722ec54ab1f16320568465aa922aa9ab4708129599740da85d7"
"checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
"checksum smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c4488ae950c49d403731982257768f48fada354a5203fe81f9bb6f43ca9002be"
"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
"checksum stackvector 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c049c77bf85fbc036484c97b008276d539d9ebff9dfbde37b632ebcd5b8746b6"

7
Cargo.toml
View File

@ -21,11 +21,14 @@ conch-parser = "0.1.1"
nom = "5.0.0-beta1"
subprocess = "0.1.18"
dunce = "1.0.0"
futures = "0.1.27"
futures-core = "0.2.1"
indexmap = "1.0.2"
chrono-humanize = "0.0.11"
byte-unit = "2.1.0"
ordered-float = "1.0.2"
prettyprint = "0.6.0"
cursive = { version = "0.12.0", features = ["pancurses-backend"], default-features = false }
futures-preview = "0.3.0-alpha.16"
[dependencies.pancurses]
version = "0.16"
features = ["win32a"]

240
src/cli.rs Normal file
View File

@ -0,0 +1,240 @@
use crate::prelude::*;
use crate::commands::classified::{ClassifiedCommand, ExternalCommand, InternalCommand};
use crate::commands::command::ReturnValue;
use crate::context::Context;
crate use crate::env::Host;
crate use crate::errors::ShellError;
crate use crate::format::{EntriesListView, GenericView};
use crate::object::Value;
use rustyline::error::ReadlineError;
use rustyline::{self, ColorMode, Config, Editor};
use std::collections::VecDeque;
use std::error::Error;
use std::sync::Arc;
#[derive(Debug)]
pub enum MaybeOwned<'a, T> {
Owned(T),
Borrowed(&'a T),
}
impl<T> MaybeOwned<'a, T> {
crate fn borrow(&self) -> &T {
match self {
MaybeOwned::Owned(v) => v,
MaybeOwned::Borrowed(v) => v,
}
}
}
pub fn cli() -> Result<(), Box<Error>> {
let config = Config::builder().color_mode(ColorMode::Forced).build();
let h = crate::shell::Helper::new();
let mut rl: Editor<crate::shell::Helper> = Editor::with_config(config);
#[cfg(windows)]
{
let _ = ansi_term::enable_ansi_support();
}
rl.set_helper(Some(h));
if rl.load_history("history.txt").is_err() {
println!("No previous history.");
}
let mut context = Context::basic()?;
{
use crate::commands::*;
context.add_commands(vec![
("format", Arc::new(format)),
("format-list", Arc::new(format_list)),
("ps", Arc::new(ps::ps)),
("ls", Arc::new(ls::ls)),
("cd", Arc::new(cd::cd)),
("view", Arc::new(view::view)),
("skip", Arc::new(skip::skip)),
("take", Arc::new(take::take)),
("select", Arc::new(select::select)),
("reject", Arc::new(reject::reject)),
("to-array", Arc::new(to_array::to_array)),
("where", Arc::new(where_::r#where)),
("sort-by", Arc::new(sort_by::sort_by)),
]);
}
loop {
let readline = rl.readline(&format!("{}> ", context.env.cwd().display().to_string()));
match process_line(readline, &mut context) {
LineResult::Success(line) => {
rl.add_history_entry(line.clone());
}
LineResult::Error(err) => {
context.host.stdout(&err);
}
LineResult::Break => {
break;
}
LineResult::FatalError(err) => {
context
.host
.stdout(&format!("A surprising fatal error occurred.\n{:?}", err));
}
}
}
rl.save_history("history.txt").unwrap();
Ok(())
}
enum LineResult {
Success(String),
Error(String),
Break,
#[allow(unused)]
FatalError(ShellError),
}
fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context) -> LineResult {
match &readline {
Ok(line) if line.trim() == "exit" => LineResult::Break,
Ok(line) if line.trim() == "" => LineResult::Success(line.clone()),
Ok(line) => {
let result = match crate::parser::shell_parser(&line) {
Err(err) => {
return LineResult::Error(format!("{:?}", err));
}
Ok(val) => val,
};
let parsed = result.1;
let mut input = VecDeque::new();
for item in parsed {
input = match process_command(item.clone(), input, ctx) {
Ok(val) => val,
Err(err) => return LineResult::Error(format!("{}", err.description())),
};
}
if input.len() > 0 {
if equal_shapes(&input) {
let array = crate::commands::stream_to_array(input);
let args = CommandArgs::from_context(ctx, vec![], array);
match format(args) {
Ok(_) => {}
Err(err) => return LineResult::Error(err.to_string()),
}
} else {
let args = CommandArgs::from_context(ctx, vec![], input);
match format(args) {
Ok(_) => {}
Err(err) => return LineResult::Error(err.to_string()),
}
}
}
LineResult::Success(line.to_string())
}
Err(ReadlineError::Interrupted) => {
println!("CTRL-C");
LineResult::Break
}
Err(ReadlineError::Eof) => {
println!("CTRL-D");
LineResult::Break
}
Err(err) => {
println!("Error: {:?}", err);
LineResult::Break
}
}
}
fn process_command(
parsed: Vec<crate::parser::Item>,
input: VecDeque<Value>,
context: &mut Context,
) -> Result<VecDeque<Value>, ShellError> {
let command = classify_command(&parsed, context)?;
command.run(input, context)
}
fn classify_command(
command: &[crate::parser::Item],
context: &Context,
) -> Result<ClassifiedCommand, ShellError> {
let command_name = &command[0].name()?;
let arg_list: Vec<Value> = command[1..].iter().map(|i| i.as_value()).collect();
let arg_list_strings: Vec<String> = command[1..].iter().map(|i| i.print()).collect();
match *command_name {
other => match context.has_command(*command_name) {
true => {
let command = context.get_command(command_name);
Ok(ClassifiedCommand::Internal(InternalCommand {
command,
args: arg_list,
}))
}
false => Ok(ClassifiedCommand::External(ExternalCommand {
name: other.to_string(),
args: arg_list_strings,
})),
},
}
}
fn format(args: CommandArgs<'caller>) -> Result<VecDeque<ReturnValue>, ShellError> {
let last = args.input.len() - 1;
for (i, item) in args.input.iter().enumerate() {
let view = GenericView::new(item);
crate::format::print_view(&view, args.host);
if last != i {
println!("");
}
}
Ok(VecDeque::new())
}
fn format_list(args: CommandArgs<'caller>) -> Result<VecDeque<ReturnValue>, ShellError> {
let view = EntriesListView::from_stream(args.input);
crate::format::print_view(&view, args.host);
Ok(VecDeque::new())
}
fn equal_shapes(input: &VecDeque<Value>) -> bool {
let mut items = input.iter();
let item = match items.next() {
Some(item) => item,
None => return false,
};
let desc = item.data_descriptors();
for item in items {
if desc != item.data_descriptors() {
return false;
}
}
true
}

4
src/commands/classified.rs
View File

@ -11,7 +11,7 @@ impl ClassifiedCommand {
crate fn run(
self,
input: VecDeque<Value>,
context: &mut crate::Context,
context: &mut Context,
) -> Result<VecDeque<Value>, ShellError> {
match self {
ClassifiedCommand::Internal(internal) => {
@ -22,7 +22,7 @@ impl ClassifiedCommand {
for v in result {
match v {
ReturnValue::Action(action) => match action {
crate::CommandAction::ChangeCwd(cwd) => context.env.cwd = cwd,
CommandAction::ChangeCwd(cwd) => context.env.cwd = cwd,
},
ReturnValue::Value(v) => next.push_back(v),

3
src/commands/command.rs
View File

@ -1,12 +1,11 @@
use crate::errors::ShellError;
use crate::object::Value;
use crate::prelude::*;
use crate::Context;
use std::path::PathBuf;
pub struct CommandArgs<'caller> {
pub host: &'caller mut dyn Host,
pub env: &'caller crate::Environment,
pub env: &'caller Environment,
pub args: Vec<Value>,
pub input: VecDeque<Value>,
}

8
src/context.rs
View File

@ -4,8 +4,8 @@ use std::error::Error;
use std::sync::Arc;
pub struct Context {
commands: indexmap::IndexMap<String, Arc<dyn crate::Command>>,
crate host: Box<dyn crate::Host>,
commands: indexmap::IndexMap<String, Arc<dyn Command>>,
crate host: Box<dyn Host>,
crate env: Environment,
}
@ -14,11 +14,11 @@ impl Context {
Ok(Context {
commands: indexmap::IndexMap::new(),
host: Box::new(crate::env::host::BasicHost),
env: crate::Environment::basic()?,
env: Environment::basic()?,
})
}
pub fn add_commands(&mut self, commands: Vec<(&str, Arc<dyn crate::Command>)>) {
pub fn add_commands(&mut self, commands: Vec<(&str, Arc<dyn Command>)>) {
for (name, command) in commands {
self.commands.insert(name.to_string(), command);
}

1
src/errors.rs
View File

@ -1,7 +1,6 @@
#[allow(unused)]
use crate::prelude::*;
use crate::Value;
use derive_new::new;
#[derive(Debug, Ord, PartialOrd, Eq, PartialEq, new)]

1
src/format/entries.rs
View File

@ -1,6 +1,5 @@
use crate::format::RenderView;
use crate::prelude::*;
use crate::Host;
use derive_new::new;

2
src/format/generic.rs
View File

@ -1,6 +1,6 @@
use crate::format::{EntriesView, RenderView, TableView};
use crate::object::Value;
use crate::Host;
use crate::prelude::*;
use derive_new::new;
// A list is printed one line at a time with an optional separator between groups

2
src/format/list.rs
View File

@ -1,5 +1,5 @@
use crate::format::RenderView;
use crate::Host;
use crate::prelude::*;
use derive_new::new;
// A list is printed one line at a time with an optional separator between groups

2
src/format/table.rs
View File

@ -1,6 +1,6 @@
use crate::format::RenderView;
use crate::object::Value;
use crate::Host;
use crate::prelude::*;
use derive_new::new;
use prettytable::{Cell, Row, Table};

241
src/main.rs
View File

@ -1,9 +1,7 @@
#![feature(crate_visibility_modifier)]
#![feature(in_band_lifetimes)]
#[allow(unused)]
use crate::prelude::*;
mod cli;
mod commands;
mod context;
mod env;
@ -13,243 +11,10 @@ mod object;
mod parser;
mod prelude;
mod shell;
mod stream;
use crate::commands::classified::{ClassifiedCommand, ExternalCommand, InternalCommand};
use crate::commands::command::ReturnValue;
crate use crate::commands::command::{Command, CommandAction};
use crate::context::Context;
crate use crate::env::{Environment, Host};
crate use crate::errors::ShellError;
crate use crate::format::{EntriesListView, GenericView};
use crate::object::Value;
use rustyline::error::ReadlineError;
use rustyline::{self, ColorMode, Config, Editor};
use std::collections::VecDeque;
use std::error::Error;
use std::sync::Arc;
#[derive(Debug)]
pub enum MaybeOwned<'a, T> {
Owned(T),
Borrowed(&'a T),
}
impl<T> MaybeOwned<'a, T> {
crate fn borrow(&self) -> &T {
match self {
MaybeOwned::Owned(v) => v,
MaybeOwned::Borrowed(v) => v,
}
}
}
fn main() -> Result<(), Box<Error>> {
let config = Config::builder().color_mode(ColorMode::Forced).build();
let h = crate::shell::Helper::new();
let mut rl: Editor<crate::shell::Helper> = Editor::with_config(config);
#[cfg(windows)]
{
let _ = ansi_term::enable_ansi_support();
}
rl.set_helper(Some(h));
if rl.load_history("history.txt").is_err() {
println!("No previous history.");
}
let mut context = Context::basic()?;
{
use crate::commands::*;
context.add_commands(vec![
("format", Arc::new(format)),
("format-list", Arc::new(format_list)),
("ps", Arc::new(ps::ps)),
("ls", Arc::new(ls::ls)),
("cd", Arc::new(cd::cd)),
("view", Arc::new(view::view)),
("skip", Arc::new(skip::skip)),
("take", Arc::new(take::take)),
("select", Arc::new(select::select)),
("reject", Arc::new(reject::reject)),
("to-array", Arc::new(to_array::to_array)),
("where", Arc::new(where_::r#where)),
("sort-by", Arc::new(sort_by::sort_by)),
]);
}
loop {
let readline = rl.readline(&format!("{}> ", context.env.cwd().display().to_string()));
match process_line(readline, &mut context) {
LineResult::Success(line) => {
rl.add_history_entry(line.clone());
}
LineResult::Error(err) => {
context.host.stdout(&err);
}
LineResult::Break => {
break;
}
LineResult::FatalError(err) => {
context
.host
.stdout(&format!("A surprising fatal error occurred.\n{:?}", err));
}
}
}
rl.save_history("history.txt").unwrap();
Ok(())
}
enum LineResult {
Success(String),
Error(String),
Break,
#[allow(unused)]
FatalError(ShellError),
}
fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context) -> LineResult {
match &readline {
Ok(line) if line.trim() == "exit" => LineResult::Break,
Ok(line) if line.trim() == "" => LineResult::Success(line.clone()),
Ok(line) => {
let result = match crate::parser::shell_parser(&line) {
Err(err) => {
return LineResult::Error(format!("{:?}", err));
}
Ok(val) => val,
};
let parsed = result.1;
let mut input = VecDeque::new();
for item in parsed {
input = match process_command(item.clone(), input, ctx) {
Ok(val) => val,
Err(err) => return LineResult::Error(format!("{}", err.description())),
};
}
if input.len() > 0 {
if equal_shapes(&input) {
let array = crate::commands::stream_to_array(input);
let args = CommandArgs::from_context(ctx, vec![], array);
match format(args) {
Ok(_) => {}
Err(err) => return LineResult::Error(err.to_string()),
}
} else {
let args = CommandArgs::from_context(ctx, vec![], input);
match format(args) {
Ok(_) => {}
Err(err) => return LineResult::Error(err.to_string()),
}
}
}
LineResult::Success(line.to_string())
}
Err(ReadlineError::Interrupted) => {
println!("CTRL-C");
LineResult::Break
}
Err(ReadlineError::Eof) => {
println!("CTRL-D");
LineResult::Break
}
Err(err) => {
println!("Error: {:?}", err);
LineResult::Break
}
}
}
fn process_command(
parsed: Vec<crate::parser::Item>,
input: VecDeque<Value>,
context: &mut Context,
) -> Result<VecDeque<Value>, ShellError> {
let command = classify_command(&parsed, context)?;
command.run(input, context)
}
fn classify_command(
command: &[crate::parser::Item],
context: &Context,
) -> Result<ClassifiedCommand, ShellError> {
let command_name = &command[0].name()?;
let arg_list: Vec<Value> = command[1..].iter().map(|i| i.as_value()).collect();
let arg_list_strings: Vec<String> = command[1..].iter().map(|i| i.print()).collect();
match *command_name {
other => match context.has_command(*command_name) {
true => {
let command = context.get_command(command_name);
Ok(ClassifiedCommand::Internal(InternalCommand {
command,
args: arg_list,
}))
}
false => Ok(ClassifiedCommand::External(ExternalCommand {
name: other.to_string(),
args: arg_list_strings,
})),
},
}
}
fn format(args: CommandArgs<'caller>) -> Result<VecDeque<ReturnValue>, ShellError> {
let last = args.input.len() - 1;
for (i, item) in args.input.iter().enumerate() {
let view = GenericView::new(item);
crate::format::print_view(&view, args.host);
if last != i {
println!("");
}
}
Ok(VecDeque::new())
}
fn format_list(args: CommandArgs<'caller>) -> Result<VecDeque<ReturnValue>, ShellError> {
let view = EntriesListView::from_stream(args.input);
crate::format::print_view(&view, args.host);
Ok(VecDeque::new())
}
fn equal_shapes(input: &VecDeque<Value>) -> bool {
let mut items = input.iter();
let item = match items.next() {
Some(item) => item,
None => return false,
};
let desc = item.data_descriptors();
for item in items {
if desc != item.data_descriptors() {
return false;
}
}
true
crate::cli::cli()
}

17
src/object/base.rs
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@ -1,6 +1,7 @@
use crate::errors::ShellError;
use crate::object::desc::DataDescriptor;
use crate::parser::parse::Operator;
use crate::prelude::*;
use ansi_term::Color;
use chrono::{DateTime, Utc};
use chrono_humanize::Humanize;
@ -75,21 +76,21 @@ impl Value {
}
}
crate fn get_data_by_key(&'a self, name: &str) -> crate::MaybeOwned<'a, Value> {
crate fn get_data_by_key(&'a self, name: &str) -> MaybeOwned<'a, Value> {
match self {
Value::Primitive(_) => crate::MaybeOwned::Owned(Value::nothing()),
Value::Primitive(_) => MaybeOwned::Owned(Value::nothing()),
Value::Object(o) => o.get_data_by_key(name),
Value::List(_) => crate::MaybeOwned::Owned(Value::nothing()),
Value::Error(_) => crate::MaybeOwned::Owned(Value::nothing()),
Value::List(_) => MaybeOwned::Owned(Value::nothing()),
Value::Error(_) => MaybeOwned::Owned(Value::nothing()),
}
}
crate fn get_data(&'a self, desc: &DataDescriptor) -> crate::MaybeOwned<'a, Value> {
crate fn get_data(&'a self, desc: &DataDescriptor) -> MaybeOwned<'a, Value> {
match self {
Value::Primitive(_) => crate::MaybeOwned::Owned(Value::nothing()),
Value::Primitive(_) => MaybeOwned::Owned(Value::nothing()),
Value::Object(o) => o.get_data(desc),
Value::List(_) => crate::MaybeOwned::Owned(Value::nothing()),
Value::Error(_) => crate::MaybeOwned::Owned(Value::nothing()),
Value::List(_) => MaybeOwned::Owned(Value::nothing()),
Value::Error(_) => MaybeOwned::Owned(Value::nothing()),
}
}

2
src/object/dict.rs
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@ -1,9 +1,7 @@
#[allow(unused)]
use crate::prelude::*;
use crate::object::desc::DataDescriptor;
use crate::object::{Primitive, Value};
use crate::MaybeOwned;
use indexmap::IndexMap;
use std::cmp::{Ordering, PartialOrd};

3
src/parser/completer.rs
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@ -1,9 +1,10 @@
use crate::prelude::*;
use rustyline::{completion, Context};
use std::collections::BTreeMap;
#[allow(unused)]
crate struct Completer {
commands: BTreeMap<String, Box<dyn crate::Command>>,
commands: BTreeMap<String, Box<dyn Command>>,
}
impl completion::Completer for Completer {

4
src/prelude.rs
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@ -1,4 +1,6 @@
crate use crate::commands::command::{Command, CommandArgs, ReturnValue};
crate use crate::cli::MaybeOwned;
crate use crate::commands::command::{Command, CommandAction, CommandArgs, ReturnValue};
crate use crate::context::Context;
crate use crate::env::{Environment, Host};
crate use crate::errors::ShellError;
crate use crate::object::{Primitive, Value};

0
src/stream.rs Normal file
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