axbuild 0.4.6

An OS build lib toolkit used by arceos
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use std::{
    fs,
    path::{Path, PathBuf},
};

use anyhow::{Context, bail};

pub(crate) fn suite_root(workspace_root: &Path, os_name: &str) -> PathBuf {
    workspace_root.join("test-suit").join(os_name)
}

pub(crate) fn group_dir(workspace_root: &Path, os_name: &str, group: &str) -> PathBuf {
    suite_root(workspace_root, os_name).join(group)
}

pub(crate) fn require_group_dir(
    workspace_root: &Path,
    os_name: &str,
    suite_label: &str,
    group: &str,
) -> anyhow::Result<PathBuf> {
    let dir = group_dir(workspace_root, os_name, group);
    if dir.is_dir() {
        return Ok(dir);
    }

    bail!(
        "unsupported {suite_label} test group `{group}`. Supported groups are: {}",
        supported_group_names(workspace_root, os_name)?
    )
}

pub(crate) fn discover_group_names(
    workspace_root: &Path,
    os_name: &str,
) -> anyhow::Result<Vec<String>> {
    let root = suite_root(workspace_root, os_name);
    let mut groups = Vec::new();
    if root.is_dir() {
        for entry in
            fs::read_dir(&root).with_context(|| format!("failed to read {}", root.display()))?
        {
            let entry = entry?;
            if entry.path().is_dir()
                && let Ok(name) = entry.file_name().into_string()
            {
                groups.push(name);
            }
        }
    }
    groups.sort();
    Ok(groups)
}

pub(crate) fn supported_group_names(
    workspace_root: &Path,
    os_name: &str,
) -> anyhow::Result<String> {
    let groups = discover_group_names(workspace_root, os_name)?;
    Ok(if groups.is_empty() {
        "<none>".to_string()
    } else {
        groups.join(", ")
    })
}