Compare commits
No commits in common. "4338ddffafffe7c41bd9c1a3da46b2910a14a212" and "8d039e3de33bee2bfd56cfca497f434e31d8de0b" have entirely different histories.
4338ddffaf
...
8d039e3de3
8 changed files with 103 additions and 113 deletions
100
src/command.rs
Normal file
100
src/command.rs
Normal file
|
@ -0,0 +1,100 @@
|
|||
use crate::error;
|
||||
|
||||
pub struct ExitCode {
|
||||
exit_code: u8,
|
||||
}
|
||||
|
||||
impl ExitCode {
|
||||
pub fn new(exit_code: u8) -> Self {
|
||||
Self { exit_code }
|
||||
}
|
||||
|
||||
pub fn get(&self) -> u8 {
|
||||
self.exit_code
|
||||
}
|
||||
|
||||
pub fn not_found() -> Self {
|
||||
Self { exit_code: 127 }
|
||||
}
|
||||
}
|
||||
|
||||
pub trait Command {
|
||||
fn spawn(&mut self) -> ExitCode;
|
||||
}
|
||||
|
||||
pub struct CommandSequence {
|
||||
command: Box<dyn Command>,
|
||||
next_command: Option<Box<CommandSequence>>,
|
||||
}
|
||||
|
||||
impl CommandSequence {
|
||||
pub fn new(command: impl Command + 'static) -> Self {
|
||||
Self {
|
||||
command: Box::new(command),
|
||||
next_command: None,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn add(&mut self, command: impl Command + 'static) {
|
||||
if self.next_command.is_none() {
|
||||
self.next_command = Some(Box::new(CommandSequence::new(command)));
|
||||
} else {
|
||||
self.next_command.as_mut().unwrap().add(command);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Command for CommandSequence {
|
||||
fn spawn(&mut self) -> ExitCode {
|
||||
let mut exit_code = self.command.spawn();
|
||||
|
||||
if self.next_command.is_some() {
|
||||
exit_code = self.next_command.as_mut().unwrap().spawn();
|
||||
}
|
||||
|
||||
exit_code
|
||||
}
|
||||
}
|
||||
|
||||
pub struct UnixProgram {
|
||||
command: std::process::Command,
|
||||
}
|
||||
|
||||
impl UnixProgram {
|
||||
pub fn new(mut argv: Vec<String>) -> Self {
|
||||
let program = argv.remove(0);
|
||||
let mut command = std::process::Command::new(&program);
|
||||
command.args(argv);
|
||||
|
||||
Self { command }
|
||||
}
|
||||
}
|
||||
|
||||
impl Command for UnixProgram {
|
||||
fn spawn(&mut self) -> ExitCode {
|
||||
let handle = self.command.spawn();
|
||||
|
||||
if handle.is_ok() {
|
||||
let exit_code = handle
|
||||
.unwrap()
|
||||
.wait()
|
||||
.expect("error waiting for the child")
|
||||
.code()
|
||||
.unwrap_or(1);
|
||||
|
||||
let exit_code = match u8::try_from(exit_code) {
|
||||
Ok(code) => ExitCode::new(code),
|
||||
Err(_e) => ExitCode::new(u8::MAX),
|
||||
};
|
||||
|
||||
exit_code
|
||||
} else {
|
||||
let message = format!(
|
||||
"{}: command not found",
|
||||
self.command.get_program().to_str().unwrap()
|
||||
);
|
||||
error::print_error(message);
|
||||
ExitCode::not_found()
|
||||
}
|
||||
}
|
||||
}
|
|
@ -1,36 +0,0 @@
|
|||
use crate::command::Command;
|
||||
use crate::exit_code::ExitCode;
|
||||
|
||||
pub struct CommandSequence {
|
||||
command: Box<dyn Command>,
|
||||
next_command: Option<Box<CommandSequence>>,
|
||||
}
|
||||
|
||||
impl CommandSequence {
|
||||
pub fn new(command: impl Command + 'static) -> Self {
|
||||
Self {
|
||||
command: Box::new(command),
|
||||
next_command: None,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn add(&mut self, command: impl Command + 'static) {
|
||||
if self.next_command.is_none() {
|
||||
self.next_command = Some(Box::new(CommandSequence::new(command)));
|
||||
} else {
|
||||
self.next_command.as_mut().unwrap().add(command);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Command for CommandSequence {
|
||||
fn spawn(&mut self) -> ExitCode {
|
||||
let mut exit_code = self.command.spawn();
|
||||
|
||||
if self.next_command.is_some() {
|
||||
exit_code = self.next_command.as_mut().unwrap().spawn();
|
||||
}
|
||||
|
||||
exit_code
|
||||
}
|
||||
}
|
|
@ -1,8 +0,0 @@
|
|||
pub mod command_sequence;
|
||||
pub mod unix_program;
|
||||
|
||||
use crate::exit_code::ExitCode;
|
||||
|
||||
pub trait Command {
|
||||
fn spawn(&mut self) -> ExitCode;
|
||||
}
|
|
@ -1,46 +0,0 @@
|
|||
use crate::command::Command;
|
||||
use crate::error::print_error;
|
||||
use crate::exit_code::ExitCode;
|
||||
|
||||
pub struct UnixProgram {
|
||||
command: std::process::Command,
|
||||
}
|
||||
|
||||
impl UnixProgram {
|
||||
pub fn new(mut argv: Vec<String>) -> Self {
|
||||
let program = argv.remove(0);
|
||||
let mut command = std::process::Command::new(&program);
|
||||
command.args(argv);
|
||||
|
||||
Self { command }
|
||||
}
|
||||
}
|
||||
|
||||
impl Command for UnixProgram {
|
||||
fn spawn(&mut self) -> ExitCode {
|
||||
let handle = self.command.spawn();
|
||||
|
||||
if handle.is_ok() {
|
||||
let exit_code = handle
|
||||
.unwrap()
|
||||
.wait()
|
||||
.expect("error waiting for the child")
|
||||
.code()
|
||||
.unwrap_or(1);
|
||||
|
||||
let exit_code = match u8::try_from(exit_code) {
|
||||
Ok(code) => ExitCode::new(code),
|
||||
Err(_e) => ExitCode::new(u8::MAX),
|
||||
};
|
||||
|
||||
exit_code
|
||||
} else {
|
||||
let message = format!(
|
||||
"{}: command not found",
|
||||
self.command.get_program().to_str().unwrap()
|
||||
);
|
||||
print_error(message);
|
||||
ExitCode::not_found()
|
||||
}
|
||||
}
|
||||
}
|
|
@ -1,5 +1,4 @@
|
|||
use crate::command::Command;
|
||||
use crate::exit_code::ExitCode;
|
||||
use crate::command::{Command, ExitCode};
|
||||
use crate::interface::{get_user_input, print_prompt};
|
||||
use crate::parser::parse_command_line;
|
||||
|
||||
|
|
|
@ -1,17 +0,0 @@
|
|||
pub struct ExitCode {
|
||||
exit_code: u8,
|
||||
}
|
||||
|
||||
impl ExitCode {
|
||||
pub fn new(exit_code: u8) -> Self {
|
||||
Self { exit_code }
|
||||
}
|
||||
|
||||
pub fn get(&self) -> u8 {
|
||||
self.exit_code
|
||||
}
|
||||
|
||||
pub fn not_found() -> Self {
|
||||
Self { exit_code: 127 }
|
||||
}
|
||||
}
|
|
@ -1,7 +1,6 @@
|
|||
mod command;
|
||||
mod control;
|
||||
mod error;
|
||||
mod exit_code;
|
||||
mod interface;
|
||||
mod parser;
|
||||
|
||||
|
|
|
@ -1,5 +1,4 @@
|
|||
use crate::command::command_sequence::CommandSequence;
|
||||
use crate::command::unix_program::UnixProgram;
|
||||
use crate::command::{CommandSequence, UnixProgram};
|
||||
|
||||
pub fn parse_command_line(line: String) -> Option<CommandSequence> {
|
||||
let argv: Vec<String> = line.split_whitespace().map(|s| s.to_string()).collect();
|
||||
|
@ -7,7 +6,7 @@ pub fn parse_command_line(line: String) -> Option<CommandSequence> {
|
|||
if !argv.is_empty() {
|
||||
let command = UnixProgram::new(argv);
|
||||
let command_sequence = CommandSequence::new(command);
|
||||
|
||||
// command_sequence.add(_command);
|
||||
Some(command_sequence)
|
||||
} else {
|
||||
None
|
||||
|
|
Loading…
Reference in a new issue