Rename dav crate to caldav to prepare splitting dav functionality into dav crate

crates/dav/src/depth_extractor.rs

@@ -1,53 +0,0 @@
-use actix_web::{http::StatusCode, FromRequest, HttpRequest, ResponseError};
-use derive_more::Display;
-use futures_util::future::{err, ok, Ready};
-
-#[derive(Debug, Display)]
-pub struct InvalidDepthHeader {}
-
-impl ResponseError for InvalidDepthHeader {
-    fn status_code(&self) -> actix_web::http::StatusCode {
-        StatusCode::BAD_REQUEST
-    }
-}
-
-#[derive(Debug, PartialEq)]
-pub enum Depth {
-    Zero,
-    One,
-    Infinity,
-}
-
-impl TryFrom<&[u8]> for Depth {
-    type Error = InvalidDepthHeader;
-
-    fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
-        match value {
-            b"0" => Ok(Depth::Zero),
-            b"1" => Ok(Depth::One),
-            b"Infinity" | b"infinity" => Ok(Depth::Infinity),
-            _ => Err(InvalidDepthHeader {}),
-        }
-    }
-}
-
-impl FromRequest for Depth {
-    type Error = InvalidDepthHeader;
-    type Future = Ready<Result<Self, Self::Error>>;
-
-    fn extract(req: &HttpRequest) -> Self::Future {
-        if let Some(depth_header) = req.headers().get("Depth") {
-            match depth_header.as_bytes().try_into() {
-                Ok(depth) => ok(depth),
-                Err(e) => err(e),
-            }
-        } else {
-            // default depth
-            ok(Depth::Zero)
-        }
-    }
-
-    fn from_request(req: &HttpRequest, _payload: &mut actix_web::dev::Payload) -> Self::Future {
-        Self::extract(req)
-    }
-}