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use lazy_static::lazy_static;
use regex::{Captures, Regex};
use std::borrow::Cow;
use std::collections::HashMap;
use std::fs::OpenOptions;
use std::io::{self, Write};
use std::path::Path;
use crate::app::AppStateCmdResult;
use crate::app_context::AppContext;
use crate::browser_states::BrowserState;
use crate::conf::Conf;
use crate::external::Launchable;
use crate::help_states::HelpState;
use crate::task_sync::TaskLifetime;
use crate::tree_options::OptionBool;
#[derive(Debug, Clone)]
pub struct Verb {
pub name: String,
pub exec_pattern: String,
}
pub struct VerbStore {
pub verbs: HashMap<String, Verb>,
}
pub trait VerbExecutor {
fn execute_verb(&self, verb: &Verb, con: &AppContext) -> io::Result<AppStateCmdResult>;
}
impl VerbExecutor for HelpState {
fn execute_verb(&self, verb: &Verb, _con: &AppContext) -> io::Result<AppStateCmdResult> {
Ok(match verb.exec_pattern.as_ref() {
":open" => AppStateCmdResult::Launch(Launchable::opener(&Conf::default_location())?),
":quit" => AppStateCmdResult::Quit,
_ => AppStateCmdResult::Keep,
})
}
}
impl VerbExecutor for BrowserState {
fn execute_verb(&self, verb: &Verb, con: &AppContext) -> io::Result<AppStateCmdResult> {
let tree = match &self.filtered_tree {
Some(tree) => &tree,
None => &self.tree,
};
let path = &tree.selected_line().path;
Ok(match verb.exec_pattern.as_ref() {
":back" => AppStateCmdResult::PopState,
":focus" => {
let path = tree.selected_line().path.clone();
let options = tree.options.clone();
AppStateCmdResult::from_optional_state(BrowserState::new(
path,
options,
&TaskLifetime::unlimited(),
))
}
":toggle_hidden" => {
let mut options = tree.options.clone();
options.show_hidden = !options.show_hidden;
AppStateCmdResult::from_optional_state(BrowserState::new(
self.tree.root().clone(),
options,
&TaskLifetime::unlimited(),
))
}
":toggle_git_ignore" => {
let mut options = tree.options.clone();
options.respect_git_ignore = match options.respect_git_ignore {
OptionBool::Auto => {
if tree.nb_gitignored > 0 {
OptionBool::No
} else {
OptionBool::Yes
}
}
OptionBool::Yes => OptionBool::No,
OptionBool::No => OptionBool::Yes,
};
debug!("respect_git_ignore = {:?}", options.respect_git_ignore);
AppStateCmdResult::from_optional_state(BrowserState::new(
self.tree.root().clone(),
options,
&TaskLifetime::unlimited(),
))
}
":toggle_files" => {
let mut options = tree.options.clone();
options.only_folders = !options.only_folders;
AppStateCmdResult::from_optional_state(BrowserState::new(
self.tree.root().clone(),
options,
&TaskLifetime::unlimited(),
))
}
":toggle_perm" => {
let mut options = tree.options.clone();
options.show_permissions = !options.show_permissions;
AppStateCmdResult::from_optional_state(BrowserState::new(
self.tree.root().clone(),
options,
&TaskLifetime::unlimited(),
))
}
":toggle_sizes" => {
let mut options = tree.options.clone();
options.show_sizes = !options.show_sizes;
AppStateCmdResult::from_optional_state(BrowserState::new(
self.tree.root().clone(),
options,
&TaskLifetime::unlimited(),
))
}
":print_path" | ":cd" => {
if let Some(ref output_path) = con.output_path {
// an output path was provided, we write to it
let f = OpenOptions::new().append(true).open(output_path)?;
writeln!(&f, "{}", path.to_string_lossy())?;
AppStateCmdResult::Quit
} else {
// no output path provided. We write on stdout, but we must
// do it after app closing to have the normal terminal
let mut launchable = Launchable::from(&path.to_string_lossy())?;
launchable.just_print = true;
AppStateCmdResult::Launch(launchable)
}
}
":open" => AppStateCmdResult::Launch(Launchable::opener(path)?),
":parent" => match &self.tree.selected_line().path.parent() {
Some(path) => {
let path = path.to_path_buf();
let options = self.tree.options.clone();
AppStateCmdResult::from_optional_state(BrowserState::new(
path,
options,
&TaskLifetime::unlimited(),
))
}
None => AppStateCmdResult::DisplayError("no parent found".to_string()),
},
":quit" => AppStateCmdResult::Quit,
_ => AppStateCmdResult::Launch(Launchable::from(&verb.exec_string(path))?),
})
}
}
impl Verb {
fn exec_string(&self, path: &Path) -> String {
lazy_static! {
static ref regex: Regex = Regex::new(r"\{([\w.]+)\}").unwrap();
}
regex
.replace_all(&*self.exec_pattern, |caps: &Captures<'_>| {
match caps.get(1).unwrap().as_str() {
"file" => path.to_string_lossy(),
_ => Cow::from("-hu?-"),
}
})
.to_string()
}
pub fn description_for(&self, state: &BrowserState) -> String {
let line = match &state.filtered_tree {
Some(tree) => tree.selected_line(),
None => state.tree.selected_line(),
};
let path = &line.path;
if self.exec_pattern == ":cd" {
return format!("cd {}", path.to_string_lossy());
}
match self.exec_pattern.starts_with(':') {
true => self.description(),
false => self.exec_string(path),
}
}
pub fn description(&self) -> String {
match self.exec_pattern.as_ref() {
":back" => "reverts to the previous state (mapped to `<esc>`)".to_string(),
":cd" => "changes directory - see https://github.com/Canop/broot".to_string(),
":print_path" => "prints path (e.g. to change directory)".to_string(),
":focus" => "displays a directory (mapped to `<enter>`)".to_string(),
":open" => "opens a file according to OS settings (mapped to `<enter>`)".to_string(),
":parent" => "moves to the parent directory".to_string(),
":quit" => "quits the application".to_string(),
":toggle_hidden" => "toggles showing hidden files".to_string(),
":toggle_git_ignore" => "toggles use of .gitignore".to_string(),
":toggle_files" => "toggles showing files (or just folders)".to_string(),
":toggle_sizes" => "toggles showing sizes".to_string(),
_ => format!("`{}`", self.exec_pattern),
}
}
}
impl VerbStore {
pub fn new() -> VerbStore {
VerbStore {
verbs: HashMap::new(),
}
}
pub fn fill_from_conf(&mut self, conf: &Conf) {
for verb_conf in &conf.verbs {
self.verbs.insert(
verb_conf.invocation.to_owned(),
Verb {
name: verb_conf.name.to_owned(),
exec_pattern: verb_conf.execution.to_owned(),
},
);
}
}
pub fn get(&self, verb_key: &str) -> Option<&Verb> {
self.verbs.get(verb_key)
}
}
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