//! Parsers for path.
use crate::parser::char;
use crate::parser::str::{find_split2_hole, satisfy_chars_with_pct_encoded};
use crate::spec::Spec;
use crate::validate::Error;
/// Returns `Ok(_)` if the string matches `path-abempty` or `ipath-abempty`.
pub(super) fn validate_path_abempty<S: Spec>(i: &str) -> Result<(), Error> {
if i.is_empty() {
return Ok(());
}
let i = match i.strip_prefix('/') {
Some(rest) => rest,
None => return Err(Error::new()),
};
let is_valid = satisfy_chars_with_pct_encoded(
i,
char::is_ascii_pchar_slash,
S::is_nonascii_char_unreserved,
);
if is_valid {
Ok(())
} else {
Err(Error::new())
}
}
/// Returns `Ok(_)` if the string matches `hier-part` or `ihier-part` modulo
/// `"//" authority path-abempty`.
pub(super) fn validate_path_absolute_authority_absent<S: Spec>(i: &str) -> Result<(), Error> {
if i.is_empty() {
// `path-empty`.
return Ok(());
}
if i.starts_with("//") {
unreachable!("this case should be handled by the caller");
}
let is_valid = satisfy_chars_with_pct_encoded(
i,
char::is_ascii_pchar_slash,
S::is_nonascii_char_unreserved,
);
if is_valid {
Ok(())
} else {
Err(Error::new())
}
}
/// Returns `Ok(_)` if the string matches `relative-part` or `irelative-part` modulo
/// `"//" authority path-abempty`.
pub(super) fn validate_path_relative_authority_absent<S: Spec>(i: &str) -> Result<(), Error> {
if i.starts_with("//") {
unreachable!("this case should be handled by the caller");
}
let is_valid = match find_split2_hole(i, b'/', b':') {
Some((_, b'/', _)) | None => satisfy_chars_with_pct_encoded(
i,
char::is_ascii_pchar_slash,
S::is_nonascii_char_unreserved,
),
Some((_, c, _)) => {
debug_assert_eq!(c, b':');
// `foo:bar`-style. This does not match `path-noscheme`.
return Err(Error::new());
}
};
if is_valid {
Ok(())
} else {
Err(Error::new())
}
}
/// Returns `Ok(_)` if the string matches `path`/`ipath` rules.
pub(crate) fn validate_path<S: Spec>(i: &str) -> Result<(), Error> {
if i.starts_with("//") {
return Err(Error::new());
}
let is_valid = satisfy_chars_with_pct_encoded(
i,
char::is_ascii_pchar_slash,
S::is_nonascii_char_unreserved,
);
if is_valid {
Ok(())
} else {
Err(Error::new())
}
}
