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|
use crate::commit::Commit;
use crate::list::{Action, Line};
use std::cmp;
use std::fs::File;
use std::io::Read;
use std::io::Write;
use std::path::PathBuf;
fn load_filepath(path: &PathBuf, config_comment_char: &str) -> Result<Vec<Line>, String> {
let mut file = match File::open(&path) {
Ok(file) => file,
Err(why) => {
return Err(format!("Error opening file, {}\nReason: {}", path.display(), why));
},
};
let mut s = String::new();
match file.read_to_string(&mut s) {
Ok(_) => {},
Err(why) => {
return Err(format!("Error reading file, {}\nReason: {}", path.display(), why));
},
}
let comment_char = if config_comment_char.eq("auto") {
"#"
}
else {
config_comment_char
};
// catch noop rebases
s.lines()
.filter(|l| !l.starts_with(comment_char) && !l.is_empty())
.map(|l| {
match Line::new(l) {
Ok(line) => Ok(line),
Err(e) => Err(format!("Error reading file, {}", e)),
}
})
.collect()
}
pub struct GitInteractive {
filepath: PathBuf,
lines: Vec<Line>,
selected_line_index: usize,
visual_index_start: usize,
}
impl GitInteractive {
pub fn new_from_filepath(filepath: &str, comment_char: &str) -> Result<Self, String> {
let path = PathBuf::from(filepath);
let lines = load_filepath(&path, comment_char)?;
Ok(GitInteractive {
filepath: path,
lines,
selected_line_index: 1,
visual_index_start: 1,
})
}
pub fn write_file(&self) -> Result<(), String> {
let mut file = match File::create(&self.filepath) {
Ok(file) => file,
Err(why) => {
return Err(format!(
"Error opening file, {}\nReason: {}",
self.filepath.display(),
why
));
},
};
for line in self.lines.iter() {
match writeln!(file, "{}", line.to_text()) {
Ok(_) => {},
Err(why) => {
return Err(format!("Error writing to file, {}", why));
},
}
}
Ok(())
}
pub fn reload_file(&mut self, comment_char: &str) -> Result<(), String> {
let lines = load_filepath(&self.filepath, comment_char)?;
self.lines = lines;
Ok(())
}
pub fn clear(&mut self) {
self.lines.clear();
}
pub fn move_cursor_up(&mut self, amount: usize) {
self.selected_line_index = match amount {
a if a >= self.selected_line_index => 1,
_ => self.selected_line_index - amount,
};
}
pub fn move_cursor_down(&mut self, amount: usize) {
self.selected_line_index = cmp::min(self.selected_line_index + amount, self.lines.len());
}
pub fn start_visual_mode(&mut self) {
self.visual_index_start = self.selected_line_index;
}
#[allow(clippy::range_plus_one)]
pub fn swap_visual_range_up(&mut self) {
if self.selected_line_index == 1 || self.visual_index_start == 1 {
return;
}
let range = if self.selected_line_index <= self.visual_index_start {
self.selected_line_index..self.visual_index_start + 1
}
else {
self.visual_index_start..self.selected_line_index + 1
};
for index in range {
self.lines.swap(index - 1, index - 2);
}
self.visual_index_start -= 1;
self.move_cursor_up(1);
}
pub fn swap_selected_up(&mut self) {
if self.selected_line_index == 1 {
return;
}
self.lines
.swap(self.selected_line_index - 1, self.selected_line_index - 2);
self.move_cursor_up(1);
}
#[allow(clippy::range_plus_one)]
pub fn swap_visual_range_down(&mut self) {
if self.selected_line_index == self.lines.len() || self.visual_index_start == self.lines.len() {
return;
}
let range = if self.selected_line_index <= self.visual_index_start {
self.selected_line_index..self.visual_index_start + 1
}
else {
self.visual_index_start..self.selected_line_index + 1
};
for index in range.rev() {
self.lines.swap(index - 1, index);
}
self.visual_index_start += 1;
self.move_cursor_down(1);
}
pub fn swap_selected_down(&mut self) {
if self.selected_line_index == self.lines.len() {
return;
}
self.lines.swap(self.selected_line_index - 1, self.selected_line_index);
self.move_cursor_down(1);
}
pub fn edit_selected_line(&mut self, content: &str) {
self.lines[self.selected_line_index - 1].edit_content(content);
}
pub fn get_selected_line_edit_content(&self) -> &String {
self.lines[self.selected_line_index - 1].get_edit_content()
}
#[allow(clippy::range_plus_one)]
pub fn set_visual_range_action(&mut self, action: Action) {
let range = if self.selected_line_index <= self.visual_index_start {
self.selected_line_index..self.visual_index_start + 1
}
else {
self.visual_index_start..self.selected_line_index + 1
};
for index in range {
let selected_action = self.lines[index - 1].get_action();
if *selected_action != Action::Exec && *selected_action != Action::Break {
self.lines[index - 1].set_action(action);
}
}
}
pub fn set_selected_line_action(&mut self, action: Action) {
let selected_action = self.lines[self.selected_line_index - 1].get_action();
if *selected_action != Action::Exec && *selected_action != Action::Break {
self.lines[self.selected_line_index - 1].set_action(action);
}
}
pub fn toggle_break(&mut self) {
let selected_action = self.lines[self.selected_line_index - 1].get_action();
if *selected_action == Action::Break {
self.lines.remove(self.selected_line_index - 1);
if self.selected_line_index != 1 {
self.selected_line_index -= 1;
}
}
else {
self.lines.insert(self.selected_line_index, Line::new_break());
if self.selected_line_index != self.lines.len() {
self.selected_line_index += 1;
}
}
}
pub fn load_commit_stats(&self) -> Result<Commit, String> {
let selected_action = self.lines[self.selected_line_index - 1].get_action();
if *selected_action != Action::Exec && *selected_action != Action::Break {
return Ok(Commit::from_commit_hash(self.get_selected_line_hash().as_str())?);
}
Err(String::from("Cannot load commit for the selected action"))
}
pub fn is_noop(&self) -> bool {
!self.lines.is_empty() && *self.lines[0].get_action() == Action::Noop
}
pub fn get_selected_line_hash(&self) -> &String {
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