objdiff/src/config.rs

127 lines
4.0 KiB
Rust

use std::{
fs::File,
path::{Component, Path, PathBuf},
};
use anyhow::{Context, Result};
use globset::{Glob, GlobSet, GlobSetBuilder};
use crate::app::AppConfig;
#[derive(Default, Clone, serde::Deserialize)]
#[serde(default)]
pub struct ProjectConfig {
pub custom_make: Option<String>,
pub target_dir: Option<PathBuf>,
pub base_dir: Option<PathBuf>,
pub build_target: bool,
pub watch_patterns: Vec<Glob>,
#[serde(alias = "units")]
pub objects: Vec<ProjectObject>,
}
#[derive(Default, Clone, serde::Deserialize)]
pub struct ProjectObject {
pub name: Option<String>,
pub path: PathBuf,
pub reverse_fn_order: Option<bool>,
}
#[derive(Clone)]
pub enum ProjectObjectNode {
File(String, ProjectObject),
Dir(String, Vec<ProjectObjectNode>),
}
fn find_dir<'a>(
name: &str,
nodes: &'a mut Vec<ProjectObjectNode>,
) -> &'a mut Vec<ProjectObjectNode> {
if let Some(index) = nodes
.iter()
.position(|node| matches!(node, ProjectObjectNode::Dir(dir_name, _) if dir_name == name))
{
if let ProjectObjectNode::Dir(_, children) = &mut nodes[index] {
return children;
}
} else {
nodes.push(ProjectObjectNode::Dir(name.to_string(), vec![]));
if let Some(ProjectObjectNode::Dir(_, children)) = nodes.last_mut() {
return children;
}
}
unreachable!();
}
fn build_nodes(objects: &[ProjectObject]) -> Vec<ProjectObjectNode> {
let mut nodes = vec![];
for object in objects {
let mut out_nodes = &mut nodes;
let path = object.name.as_ref().map(Path::new).unwrap_or(&object.path);
if let Some(parent) = path.parent() {
for component in parent.components() {
if let Component::Normal(name) = component {
let name = name.to_str().unwrap();
out_nodes = find_dir(name, out_nodes);
}
}
}
let filename = path.file_name().unwrap().to_str().unwrap().to_string();
out_nodes.push(ProjectObjectNode::File(filename, object.clone()));
}
nodes
}
pub const CONFIG_FILENAMES: [&str; 3] = ["objdiff.yml", "objdiff.yaml", "objdiff.json"];
pub fn load_project_config(config: &mut AppConfig) -> Result<()> {
let Some(project_dir) = &config.project_dir else {
return Ok(());
};
if let Some(result) = try_project_config(project_dir) {
let project_config = result?;
config.custom_make = project_config.custom_make;
config.target_obj_dir = project_config.target_dir.map(|p| project_dir.join(p));
config.base_obj_dir = project_config.base_dir.map(|p| project_dir.join(p));
config.build_target = project_config.build_target;
config.watch_patterns = project_config.watch_patterns;
config.watcher_change = true;
config.objects = project_config.objects;
config.object_nodes = build_nodes(&config.objects);
}
Ok(())
}
fn try_project_config(dir: &Path) -> Option<Result<ProjectConfig>> {
for filename in CONFIG_FILENAMES.iter() {
let config_path = dir.join(filename);
if config_path.is_file() {
return match filename.contains("json") {
true => Some(read_json_config(&config_path)),
false => Some(read_yml_config(&config_path)),
};
}
}
None
}
fn read_yml_config(config_path: &Path) -> Result<ProjectConfig> {
let mut reader = File::open(config_path)
.with_context(|| format!("Failed to open config file '{}'", config_path.display()))?;
Ok(serde_yaml::from_reader(&mut reader)?)
}
fn read_json_config(config_path: &Path) -> Result<ProjectConfig> {
let mut reader = File::open(config_path)
.with_context(|| format!("Failed to open config file '{}'", config_path.display()))?;
Ok(serde_json::from_reader(&mut reader)?)
}
pub fn build_globset(vec: &[Glob]) -> std::result::Result<GlobSet, globset::Error> {
let mut builder = GlobSetBuilder::new();
for glob in vec {
builder.add(glob.clone());
}
builder.build()
}