fastskill_core/validation/
frontmatter.rs

1//! YAML frontmatter validation for SKILL.md.
2
3use crate::validation::result::ValidationResult;
4
5pub(crate) fn bounds(content: &str) -> (bool, bool) {
6    let lines: Vec<&str> = content.lines().collect();
7    let has_start = !lines.is_empty() && lines[0].trim().starts_with("---");
8    let has_end = has_start
9        && lines
10            .iter()
11            .enumerate()
12            .skip(1)
13            .any(|(_, line)| line.trim() == "---");
14    (has_start, has_end)
15}
16
17pub(crate) fn validate_content(content: &str, mut result: ValidationResult) -> ValidationResult {
18    let (has_start, has_end) = bounds(content);
19    if !has_start {
20        result = result.with_warning(
21            "yaml_frontmatter",
22            "SKILL.md should start with YAML frontmatter (---)",
23        );
24    } else if !has_end {
25        result = result.with_warning(
26            "yaml_frontmatter",
27            "YAML frontmatter should be properly closed with ---",
28        );
29    }
30    result
31}

fastskill_core/validation/frontmatter.rs

fastskill_core/validation/
frontmatter.rs