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|
mod argument_tolkenizer;
use crate::display::Display;
use crate::external_editor::argument_tolkenizer::tolkenize;
use crate::git_interactive::GitInteractive;
use crate::input::input_handler::{InputHandler, InputMode};
use crate::input::Input;
use crate::process::exit_status::ExitStatus;
use crate::process::process_module::ProcessModule;
use crate::process::process_result::ProcessResult;
use crate::process::state::State;
use crate::view::view_data::ViewData;
use crate::view::View;
use std::ffi::OsString;
use std::process::Command;
use std::process::ExitStatus as ProcessExitStatus;
#[derive(Clone, Debug, PartialEq)]
enum ExternalEditorState {
Active,
Error,
Empty,
Finish,
}
pub struct ExternalEditor<'e> {
editor: String,
display: &'e Display<'e>,
state: ExternalEditorState,
view_data_external: ViewData,
view_data_error: ViewData,
}
impl<'e> ProcessModule for ExternalEditor<'e> {
fn activate(&mut self, _state: &State, _git_interactive: &GitInteractive) {
if self.state != ExternalEditorState::Empty {
self.state = ExternalEditorState::Active;
}
}
fn build_view_data(&mut self, view: &View<'_>, _: &GitInteractive) -> &ViewData {
let (window_width, window_height) = view.get_view_size();
if let ExternalEditorState::Empty = self.state {
self.view_data_error.set_view_size(window_width, window_height);
self.view_data_error.rebuild();
&self.view_data_error
}
else {
self.view_data_external.set_view_size(window_width, window_height);
self.view_data_external.rebuild();
&self.view_data_external
}
}
fn process(&mut self, git_interactive: &mut GitInteractive, _view: &View<'_>) -> ProcessResult {
match self.state {
ExternalEditorState::Active => self.process_active(git_interactive),
ExternalEditorState::Error => Self::process_error(git_interactive),
ExternalEditorState::Empty => ProcessResult::new(),
ExternalEditorState::Finish => self.process_finish(git_interactive),
}
}
fn handle_input(
&mut self,
input_handler: &InputHandler<'_>,
_git_interactive: &mut GitInteractive,
_view: &View<'_>,
) -> ProcessResult
{
match self.state {
ExternalEditorState::Active => Self::handle_input_active(input_handler),
ExternalEditorState::Empty => self.handle_input_empty(input_handler),
_ => ProcessResult::new().input(Input::Other),
}
}
}
impl<'e> ExternalEditor<'e> {
pub(crate) fn new(display: &'e Display<'_>, editor: &str) -> Self {
Self {
editor: String::from(editor),
display,
state: ExternalEditorState::Active,
view_data_external: ViewData::new(),
view_data_error: ViewData::new_confirm("Empty rebase todo file. Do you wish to exit"),
}
}
fn run_editor(&mut self, git_interactive: &GitInteractive) -> Result<(), String> {
let mut arguments = if let Some(args) = tolkenize(self.editor.as_str()) {
if args.is_empty() {
return Err(String::from("No editor configured"));
}
args.into_iter().map(OsString::from)
}
else {
return Err(format!("Invalid editor: {}", self.editor));
};
git_interactive.write_file()?;
let filepath = git_interactive.get_filepath();
let callback = || -> Result<ProcessExitStatus, String> {
let mut file_pattern_found = false;
let mut cmd = Command::new(arguments.next().unwrap());
for arg in arguments {
if arg.as_os_str() == "%" {
file_pattern_found = true;
cmd.arg(filepath.as_os_str());
}
else {
cmd.arg(arg);
}
}
if !file_pattern_found {
cmd.arg(filepath.as_os_str());
}
cmd.status()
.map_err(|e| format!("Unable to run editor ({}):\n{}", self.editor, e.to_string()))
};
let exit_status: ProcessExitStatus = self.display.leave_temporarily(callback)?;
if !exit_status.success() {
return Err(String::from("Editor returned non-zero exit status."));
}
Ok(())
}
fn process_active(&mut self, git_interactive: &GitInteractive) -> ProcessResult {
let mut result = ProcessResult::new();
if let Err(e) = self.run_editor(git_interactive) {
result = result.error(e.as_str());
self.state = ExternalEditorState::Error;
}
else {
self.state = ExternalEditorState::Finish;
}
result
}
fn process_finish(&mut self, git_interactive: &mut GitInteractive) -> ProcessResult {
let mut result = ProcessResult::new();
if let Err(e) = git_interactive.reload_file() {
result = result.error(e.as_str());
self.state = ExternalEditorState::Error;
}
else if git_interactive.get_lines().is_empty() {
self.state = ExternalEditorState::Empty;
}
else {
result = result.state(State::List);
}
result
}
fn process_error(git_interactive: &GitInteractive) -> ProcessResult {
let mut result = ProcessResult::new().state(State::Exiting);
if git_interactive.get_lines().is_empty() {
result = result.exit_status(ExitStatus::Good);
}
else {
result = result.exit_status(ExitStatus::StateError);
}
result
}
fn handle_input_active(input_handler: &InputHandler<'_>) -> ProcessResult {
let input = input_handler.get_input(InputMode::Default);
let mut result = ProcessResult::new().input(input);
if let Input::Resize = input {
}
else {
result = result.state(State::List);
}
result
}
fn handle_input_empty(&mut self, input_handler: &InputHandler<'_>) -> ProcessResult {
let input = input_handler.get_input(InputMode::Confirm);
let mut result = ProcessResult::new().input(input);
match input {
Input::Yes => {
result = result.exit_status(ExitStatus::Good).state(State::Exiting);
},
Input::No => {
self.state = ExternalEditorState::Active;
result = result.state(State::ExternalEditor);
},
_ => {},
}
result
}
}
|
