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// Copyright (c) Facebook, Inc. and its affiliates.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use serde::Deserialize;
use super::get_belowrc_filename;
use super::get_belowrc_view_section_key;
/// Enum of supported front view.
// We didn't re-use the MainViewState because we don't want to
// expose internal state like Process(ProcessZoomState::Cgroup)
#[derive(Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum DefaultFrontView {
Cgroup,
Process,
System,
}
/// Runtime configuration on the below view.
#[derive(Default, Deserialize)]
pub struct ViewRc {
// The default front view. If this field is not set, we will use cgroup
// view as front view
pub default_view: Option<DefaultFrontView>,
// If we want to collapse all top level cgroups. If this field is not set,
// it will be treated as false
pub collapse_cgroups: Option<bool>,
// Overrides cgroup name column width.
pub cgroup_name_width: Option<usize>,
}
impl ViewRc {
/// Create a new ViewRc object base on the content in
/// $HOME/.config/below/belowrc. Will return default ViewRc if the belowrc
/// file is missing or view section does not exists. Optionally return a
/// parse error string.
pub fn new() -> (ViewRc, Option<String>) {
match std::fs::read_to_string(get_belowrc_filename()) {
Ok(belowrc_str) => match belowrc_str.parse::<toml::value::Value>() {
// We get the belowrc file, parsing the [view] section
Ok(belowrc_val) => {
if let Some(viewrc_val) = belowrc_val.get(get_belowrc_view_section_key()) {
// Got the [view] section, let's see if we can deserialize it to ViewRc
match viewrc_val.to_owned().try_into::<ViewRc>() {
Ok(viewrc) => (viewrc, None),
Err(e) => (
Default::default(),
Some(format!(
"Failed to parse belowrc::{}: {}",
get_belowrc_view_section_key(),
e
)),
),
}
} else {
Default::default()
}
}
Err(e) => (
Default::default(),
Some(format!("Failed to parse belowrc: {}", e)),
),
},
_ => (Default::default(), None),
}
}
}
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