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use {
super::*,
crate::{
cli::AppLaunchArgs,
conf::Conf,
errors::ConfError,
file_sum,
icon::*,
pattern::SearchModeMap,
path::SpecialPath,
skin::ExtColorMap,
verb::VerbStore,
},
std::{
convert::{TryFrom, TryInto},
path::PathBuf,
},
};
/// The immutable container that can be passed around
/// to provide the configuration things for the whole
/// life of the App
pub struct AppContext {
/// where's the config file we're using
/// This vec can't be empty
pub config_paths: Vec<PathBuf>,
/// all the arguments specified at launch
pub launch_args: AppLaunchArgs,
/// the verbs in use (builtins and configured ones)
pub verb_store: VerbStore,
/// the paths for which there's a special behavior to follow (comes from conf)
pub special_paths: Vec<SpecialPath>,
/// the map between search prefixes and the search mode to apply
pub search_modes: SearchModeMap,
/// whether to show a triangle left to selected lines
pub show_selection_mark: bool,
/// mapping from file extension to colors (comes from conf)
pub ext_colors: ExtColorMap,
/// the syntect theme to use for text files previewing
pub syntax_theme: Option<String>,
/// precomputed status to display in standard cases
/// (ie when no verb is involved)
pub standard_status: StandardStatus,
/// whether we can use 24 bits colors for previewed images
pub true_colors: bool,
/// map extensions to icons, icon set chosen based on config
/// Send, Sync safely beause once created, everything is immutable
pub icons: Option<Box<dyn IconPlugin + Send + Sync>>,
/// modal (aka "vim) mode enabled
pub modal: bool,
pub mouse_capture_disabled: bool,
/// max number of panels (including preview) that can be
/// open. Guaranteed to be at least 2.
pub max_panels_count: usize,
/// whether to quit broot when the user hits "escape"
/// and there's nothing to cancel
pub quit_on_last_cancel: bool,
/// number of threads used by file_sum (count, size, date)
/// computation
pub file_sum_threads_count: usize,
}
impl AppContext {
pub fn from(
launch_args: AppLaunchArgs,
verb_store: VerbStore,
config: &Conf,
) -> Result<Self, ConfError> {
let config_paths = config.files.clone();
let standard_status = StandardStatus::new(&verb_store);
let true_colors = if let Some(value) = config.true_colors {
value
} else {
are_true_colors_available()
};
let icons = config.icon_theme.as_ref()
.and_then(|itn| icon_plugin(itn));
let special_paths = config.special_paths
.iter()
.map(|(k, v)| SpecialPath::new(k.clone(), *v))
.collect();
let search_modes = config
.search_modes
.as_ref()
.map(|map| map.try_into())
.transpose()?
.unwrap_or_default();
let ext_colors = ExtColorMap::try_from(&config.ext_colors)?;
let file_sum_threads_count = config.file_sum_threads_count
.unwrap_or(file_sum::DEFAULT_THREAD_COUNT);
if file_sum_threads_count < 1 || file_sum_threads_count > 50 {
return Err(ConfError::InvalidThreadsCount{ count: file_sum_threads_count });
}
let max_panels_count = config.max_panels_count
.unwrap_or(2)
.clamp(2, 100);
Ok(Self {
config_paths,
launch_args,
verb_store,
special_paths,
search_modes,
show_selection_mark: config.show_selection_mark.unwrap_or(false),
ext_colors,
syntax_theme: config.syntax_theme.clone(),
standard_status,
true_colors,
icons,
modal: config.modal.unwrap_or(false),
mouse_capture_disabled: config.disable_mouse_capture.unwrap_or(false),
max_panels_count,
quit_on_last_cancel: config.quit_on_last_cancel.unwrap_or(false),
file_sum_threads_count,
})
}
}
/// try to determine whether the terminal supports true
/// colors. This doesn't work well, hence the use of an
/// optional config setting.
/// Based on https://gist.github.com/XVilka/8346728#true-color-detection
fn are_true_colors_available() -> bool {
if let Ok(colorterm) = std::env::var("COLORTERM") {
debug!("COLORTERM env variable = {:?}", colorterm);
if colorterm.contains("truecolor") || colorterm.contains("24bit") {
debug!("true colors are available");
true
} else {
false
}
} else {
// this is debatable... I've found some terminals with COLORTERM
// unset but supporting true colors. As it's easy to determine
// that true colors aren't supported when looking at previewed
// images I prefer this value
true
}
}