pub const MAX_PROJECT_NAME_LEN: usize = 100;
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum NameError {
Empty,
TooLong { len: usize },
InvalidChar { ch: char },
}
impl std::fmt::Display for NameError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
NameError::Empty => write!(f, "name cannot be empty"),
NameError::TooLong { len } => write!(
f,
"name too long: {len} chars (max {MAX_PROJECT_NAME_LEN})"
),
NameError::InvalidChar { ch } => write!(
f,
"name contains invalid character {ch:?}; allowed: letters, digits, '.', '_', '-'"
),
}
}
}
impl std::error::Error for NameError {}
pub fn validate_project_name(s: &str) -> std::result::Result<(), NameError> {
let len = s.chars().count();
if len == 0 {
return Err(NameError::Empty);
}
if len > MAX_PROJECT_NAME_LEN {
return Err(NameError::TooLong { len });
}
if let Some(ch) = s
.chars()
.find(|c| !c.is_ascii_alphanumeric() && *c != '.' && *c != '_' && *c != '-')
{
return Err(NameError::InvalidChar { ch });
}
Ok(())
}
pub fn is_valid_project_name(s: &str) -> bool {
validate_project_name(s).is_ok()
}