gruff-rs 0.1.0

Rust static analyzer and quality linter for CI: dead-code, complexity, security, secrets, and architecture rules with deterministic SARIF/JSON output and baseline support.
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use super::*;

pub(crate) fn apply_exclusions_section(
    exclude_value: &Value,
    config: &mut Config,
) -> Result<(), String> {
    let registry = rules::builtin_registry();
    let entries = exclude_value
        .as_array()
        .ok_or_else(|| "config key `exclude` must be an array".to_string())?;
    let mut exclusions = Vec::new();
    for (index, entry_value) in entries.iter().enumerate() {
        exclusions.push(parse_exclusion_rule(
            index,
            entry_value,
            &registry,
            &config.custom_rules,
        )?);
    }
    config.exclusions = exclusions;
    Ok(())
}

pub(crate) fn parse_exclusion_rule(
    index: usize,
    entry_value: &Value,
    registry: &rules::RuleRegistry,
    custom_rules: &[CustomRule],
) -> Result<ExclusionRule, String> {
    let entry_path = format!("exclude[{index}]");
    let entry = entry_value
        .as_object()
        .ok_or_else(|| format!("config key `{entry_path}` must be an object"))?;
    reject_unknown_keys(
        entry,
        &["rule", "paths", "message_contains", "reason"],
        &format!("config key `{entry_path}`"),
    )?;

    let (selector, rule_ids) =
        parse_exclusion_selector(entry, &entry_path, registry, custom_rules)?;
    let paths = parse_exclusion_paths(entry, &entry_path)?;
    let message_contains = parse_exclusion_message_filter(entry, &entry_path)?;
    let reason = parse_exclusion_reason(entry, &entry_path)?;

    Ok(ExclusionRule {
        selector,
        rule_ids,
        paths,
        message_contains,
        reason,
    })
}

fn parse_exclusion_selector(
    entry: &serde_json::Map<String, Value>,
    entry_path: &str,
    registry: &rules::RuleRegistry,
    custom_rules: &[CustomRule],
) -> Result<(String, BTreeSet<String>), String> {
    let selector = required_config_string(entry, "rule", &format!("{entry_path}.rule"))?;
    let rule_ids = expand_rule_selector_with_custom(
        &selector,
        registry,
        custom_rules,
        &format!("{entry_path}.rule"),
    )?;
    Ok((selector, rule_ids))
}

fn parse_exclusion_paths(
    entry: &serde_json::Map<String, Value>,
    entry_path: &str,
) -> Result<Vec<String>, String> {
    Ok(entry
        .get("paths")
        .map(|value| {
            string_array(value, &format!("{entry_path}.paths")).map(|paths| {
                paths
                    .into_iter()
                    .map(|path| normalize_report_path(&path))
                    .collect()
            })
        })
        .transpose()?
        .unwrap_or_default())
}

fn parse_exclusion_message_filter(
    entry: &serde_json::Map<String, Value>,
    entry_path: &str,
) -> Result<Option<String>, String> {
    let message_contains = entry
        .get("message_contains")
        .map(|value| {
            value.as_str().map(str::to_string).ok_or_else(|| {
                format!("config key `{entry_path}.message_contains` must be a string")
            })
        })
        .transpose()?;
    if message_contains
        .as_deref()
        .is_some_and(|message| message.is_empty())
    {
        return Err(format!(
            "config key `{entry_path}.message_contains` must be a non-empty string"
        ));
    }
    Ok(message_contains)
}

fn parse_exclusion_reason(
    entry: &serde_json::Map<String, Value>,
    entry_path: &str,
) -> Result<String, String> {
    let reason = required_config_string(entry, "reason", &format!("{entry_path}.reason"))?;
    if reason.trim().is_empty() {
        return Err(format!(
            "config key `{entry_path}.reason` must be a non-empty string"
        ));
    }
    Ok(reason)
}

pub(crate) fn required_non_empty_config_string(
    object: &serde_json::Map<String, Value>,
    key: &str,
    entry_path: &str,
) -> Result<String, String> {
    let path = format!("{entry_path}.{key}");
    let value = required_config_string(object, key, &path)?;
    if value.trim().is_empty() {
        return Err(format!("config key `{path}` must be a non-empty string"));
    }
    Ok(value)
}

pub(crate) fn required_config_string(
    object: &serde_json::Map<String, Value>,
    key: &str,
    path: &str,
) -> Result<String, String> {
    object
        .get(key)
        .ok_or_else(|| format!("missing required config key `{path}`"))?
        .as_str()
        .map(str::to_string)
        .ok_or_else(|| format!("config key `{path}` must be a string"))
}