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69 lines
2.4 KiB
Rust
69 lines
2.4 KiB
Rust
use super::{common_header, EntityTag, IF_MATCH};
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common_header! {
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/// `If-Match` header, defined
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/// in [RFC 7232 §3.1](https://datatracker.ietf.org/doc/html/rfc7232#section-3.1)
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///
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/// The `If-Match` header field makes the request method conditional on
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/// the recipient origin server either having at least one current
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/// representation of the target resource, when the field-value is "*",
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/// or having a current representation of the target resource that has an
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/// entity-tag matching a member of the list of entity-tags provided in
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/// the field-value.
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///
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/// An origin server MUST use the strong comparison function when
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/// comparing entity-tags for `If-Match`, since the client
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/// intends this precondition to prevent the method from being applied if
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/// there have been any changes to the representation data.
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///
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/// # ABNF
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/// ```plain
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/// If-Match = "*" / 1#entity-tag
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/// ```
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///
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/// # Example Values
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/// * `"xyzzy"`
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/// * "xyzzy", "r2d2xxxx", "c3piozzzz"
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///
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/// # Examples
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/// ```
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/// use actix_web::HttpResponse;
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/// use actix_web::http::header::IfMatch;
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///
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/// let mut builder = HttpResponse::Ok();
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/// builder.insert_header(IfMatch::Any);
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/// ```
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///
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/// ```
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/// use actix_web::HttpResponse;
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/// use actix_web::http::header::{IfMatch, EntityTag};
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///
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/// let mut builder = HttpResponse::Ok();
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/// builder.insert_header(
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/// IfMatch::Items(vec![
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/// EntityTag::new(false, "xyzzy".to_owned()),
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/// EntityTag::new(false, "foobar".to_owned()),
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/// EntityTag::new(false, "bazquux".to_owned()),
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/// ])
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/// );
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/// ```
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(IfMatch, IF_MATCH) => {Any / (EntityTag)+}
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test_parse_and_format {
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crate::http::header::common_header_test!(
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test1,
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vec![b"\"xyzzy\""],
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Some(HeaderField::Items(
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vec![EntityTag::new_strong("xyzzy".to_owned())])));
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crate::http::header::common_header_test!(
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test2,
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vec![b"\"xyzzy\", \"r2d2xxxx\", \"c3piozzzz\""],
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Some(HeaderField::Items(
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vec![EntityTag::new_strong("xyzzy".to_owned()),
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EntityTag::new_strong("r2d2xxxx".to_owned()),
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EntityTag::new_strong("c3piozzzz".to_owned())])));
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crate::http::header::common_header_test!(test3, vec![b"*"], Some(IfMatch::Any));
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}
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}
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