mirror of
https://github.com/fafhrd91/actix-web
synced 2024-12-12 15:30:23 +01:00
1769 lines
62 KiB
Rust
1769 lines
62 KiB
Rust
use std::{
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borrow::{Borrow, Cow},
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collections::HashMap,
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hash::{BuildHasher, Hash, Hasher},
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mem,
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};
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use regex::{escape, Regex, RegexSet};
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use tracing::error;
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use crate::{path::PathItem, IntoPatterns, Patterns, Resource, ResourcePath};
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const MAX_DYNAMIC_SEGMENTS: usize = 16;
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/// Regex flags to allow '.' in regex to match '\n'
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///
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/// See the docs under: https://docs.rs/regex/1/regex/#grouping-and-flags
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const REGEX_FLAGS: &str = "(?s-m)";
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/// Describes the set of paths that match to a resource.
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///
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/// `ResourceDef`s are effectively a way to transform the a custom resource pattern syntax into
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/// suitable regular expressions from which to check matches with paths and capture portions of a
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/// matched path into variables. Common cases are on a fast path that avoids going through the
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/// regex engine.
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///
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///
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/// # Pattern Format and Matching Behavior
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/// Resource pattern is defined as a string of zero or more _segments_ where each segment is
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/// preceded by a slash `/`.
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///
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/// This means that pattern string __must__ either be empty or begin with a slash (`/`). This also
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/// implies that a trailing slash in pattern defines an empty segment. For example, the pattern
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/// `"/user/"` has two segments: `["user", ""]`
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///
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/// A key point to understand is that `ResourceDef` matches segments, not strings. Segments are
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/// matched individually. For example, the pattern `/user/` is not considered a prefix for the path
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/// `/user/123/456`, because the second segment doesn't match: `["user", ""]`
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/// vs `["user", "123", "456"]`.
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///
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/// This definition is consistent with the definition of absolute URL path in
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/// [RFC 3986 §3.3](https://datatracker.ietf.org/doc/html/rfc3986#section-3.3)
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///
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///
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/// # Static Resources
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/// A static resource is the most basic type of definition. Pass a pattern to [new][Self::new].
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/// Conforming paths must match the pattern exactly.
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///
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/// ## Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let resource = ResourceDef::new("/home");
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///
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/// assert!(resource.is_match("/home"));
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///
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/// assert!(!resource.is_match("/home/"));
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/// assert!(!resource.is_match("/home/new"));
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/// assert!(!resource.is_match("/homes"));
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/// assert!(!resource.is_match("/search"));
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/// ```
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///
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/// # Dynamic Segments
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/// Also known as "path parameters". Resources can define sections of a pattern that be extracted
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/// from a conforming path, if it conforms to (one of) the resource pattern(s).
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///
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/// The marker for a dynamic segment is curly braces wrapping an identifier. For example,
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/// `/user/{id}` would match paths like `/user/123` or `/user/james` and be able to extract the user
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/// IDs "123" and "james", respectively.
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///
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/// However, this resource pattern (`/user/{id}`) would, not cover `/user/123/stars` (unless
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/// constructed as a prefix; see next section) since the default pattern for segments matches all
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/// characters until it finds a `/` character (or the end of the path). Custom segment patterns are
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/// covered further down.
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///
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/// Dynamic segments do not need to be delimited by `/` characters, they can be defined within a
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/// path segment. For example, `/rust-is-{opinion}` can match the paths `/rust-is-cool` and
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/// `/rust-is-hard`.
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///
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/// For information on capturing segment values from paths or other custom resource types,
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/// see [`capture_match_info`][Self::capture_match_info]
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/// and [`capture_match_info_fn`][Self::capture_match_info_fn].
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///
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/// A resource definition can contain at most 16 dynamic segments.
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///
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/// ## Examples
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/// ```
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/// use actix_router::{Path, ResourceDef};
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///
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/// let resource = ResourceDef::prefix("/user/{id}");
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///
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/// assert!(resource.is_match("/user/123"));
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/// assert!(!resource.is_match("/user"));
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/// assert!(!resource.is_match("/user/"));
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///
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/// let mut path = Path::new("/user/123");
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/// resource.capture_match_info(&mut path);
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/// assert_eq!(path.get("id").unwrap(), "123");
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/// ```
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///
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/// # Prefix Resources
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/// A prefix resource is defined as pattern that can match just the start of a path, up to a
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/// segment boundary.
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///
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/// Prefix patterns with a trailing slash may have an unexpected, though correct, behavior.
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/// They define and therefore require an empty segment in order to match. It is easier to understand
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/// this behavior after reading the [matching behavior section]. Examples are given below.
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///
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/// The empty pattern (`""`), as a prefix, matches any path.
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///
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/// Prefix resources can contain dynamic segments.
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///
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/// ## Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let resource = ResourceDef::prefix("/home");
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/// assert!(resource.is_match("/home"));
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/// assert!(resource.is_match("/home/new"));
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/// assert!(!resource.is_match("/homes"));
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///
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/// // prefix pattern with a trailing slash
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/// let resource = ResourceDef::prefix("/user/{id}/");
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/// assert!(resource.is_match("/user/123/"));
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/// assert!(resource.is_match("/user/123//stars"));
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/// assert!(!resource.is_match("/user/123/stars"));
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/// assert!(!resource.is_match("/user/123"));
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/// ```
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///
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/// # Custom Regex Segments
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/// Dynamic segments can be customised to only match a specific regular expression. It can be
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/// helpful to do this if resource definitions would otherwise conflict and cause one to
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/// be inaccessible.
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///
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/// The regex used when capturing segment values can be specified explicitly using this syntax:
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/// `{name:regex}`. For example, `/user/{id:\d+}` will only match paths where the user ID
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/// is numeric.
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///
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/// The regex could potentially match multiple segments. If this is not wanted, then care must be
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/// taken to avoid matching a slash `/`. It is guaranteed, however, that the match ends at a
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/// segment boundary; the pattern `r"(/|$)` is always appended to the regex.
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///
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/// By default, dynamic segments use this regex: `[^/]+`. This shows why it is the case, as shown in
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/// the earlier section, that segments capture a slice of the path up to the next `/` character.
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///
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/// Custom regex segments can be used in static and prefix resource definition variants.
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///
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/// ## Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let resource = ResourceDef::new(r"/user/{id:\d+}");
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/// assert!(resource.is_match("/user/123"));
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/// assert!(resource.is_match("/user/314159"));
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/// assert!(!resource.is_match("/user/abc"));
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/// ```
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///
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/// # Tail Segments
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/// As a shortcut to defining a custom regex for matching _all_ remaining characters (not just those
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/// up until a `/` character), there is a special pattern to match (and capture) the remaining
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/// path portion.
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///
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/// To do this, use the segment pattern: `{name}*`. Since a tail segment also has a name, values are
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/// extracted in the same way as non-tail dynamic segments.
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///
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/// ## Examples
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/// ```
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/// # use actix_router::{Path, ResourceDef};
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/// let resource = ResourceDef::new("/blob/{tail}*");
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/// assert!(resource.is_match("/blob/HEAD/Cargo.toml"));
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/// assert!(resource.is_match("/blob/HEAD/README.md"));
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///
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/// let mut path = Path::new("/blob/main/LICENSE");
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/// resource.capture_match_info(&mut path);
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/// assert_eq!(path.get("tail").unwrap(), "main/LICENSE");
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/// ```
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///
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/// # Multi-Pattern Resources
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/// For resources that can map to multiple distinct paths, it may be suitable to use
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/// multi-pattern resources by passing an array/vec to [`new`][Self::new]. They will be combined
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/// into a regex set which is usually quicker to check matches on than checking each
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/// pattern individually.
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///
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/// Multi-pattern resources can contain dynamic segments just like single pattern ones.
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/// However, take care to use consistent and semantically-equivalent segment names; it could affect
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/// expectations in the router using these definitions and cause runtime panics.
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///
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/// ## Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let resource = ResourceDef::new(["/home", "/index"]);
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/// assert!(resource.is_match("/home"));
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/// assert!(resource.is_match("/index"));
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/// ```
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///
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/// # Trailing Slashes
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/// It should be noted that this library takes no steps to normalize intra-path or trailing slashes.
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/// As such, all resource definitions implicitly expect a pre-processing step to normalize paths if
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/// they you wish to accommodate "recoverable" path errors. Below are several examples of
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/// resource-path pairs that would not be compatible.
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///
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/// ## Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// assert!(!ResourceDef::new("/root").is_match("/root/"));
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/// assert!(!ResourceDef::new("/root/").is_match("/root"));
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/// assert!(!ResourceDef::prefix("/root/").is_match("/root"));
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/// ```
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///
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/// [matching behavior section]: #pattern-format-and-matching-behavior
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#[derive(Clone, Debug)]
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pub struct ResourceDef {
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id: u16,
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/// Optional name of resource.
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name: Option<String>,
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/// Pattern that generated the resource definition.
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patterns: Patterns,
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is_prefix: bool,
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/// Pattern type.
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pat_type: PatternType,
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/// List of segments that compose the pattern, in order.
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segments: Vec<PatternSegment>,
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}
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#[derive(Debug, Clone, PartialEq)]
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enum PatternSegment {
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/// Literal slice of pattern.
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Const(String),
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/// Name of dynamic segment.
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Var(String),
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}
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#[derive(Clone, Debug)]
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#[allow(clippy::large_enum_variant)]
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enum PatternType {
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/// Single constant/literal segment.
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Static(String),
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/// Single regular expression and list of dynamic segment names.
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Dynamic(Regex, Vec<&'static str>),
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/// Regular expression set and list of component expressions plus dynamic segment names.
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DynamicSet(RegexSet, Vec<(Regex, Vec<&'static str>)>),
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}
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impl ResourceDef {
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/// Constructs a new resource definition from patterns.
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///
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/// Multi-pattern resources can be constructed by providing a slice (or vec) of patterns.
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///
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/// # Panics
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/// Panics if path pattern is malformed.
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///
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/// # Examples
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/// ```
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/// use actix_router::ResourceDef;
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///
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/// let resource = ResourceDef::new("/user/{id}");
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/// assert!(resource.is_match("/user/123"));
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/// assert!(!resource.is_match("/user/123/stars"));
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/// assert!(!resource.is_match("user/1234"));
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/// assert!(!resource.is_match("/foo"));
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///
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/// let resource = ResourceDef::new(["/profile", "/user/{id}"]);
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/// assert!(resource.is_match("/profile"));
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/// assert!(resource.is_match("/user/123"));
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/// assert!(!resource.is_match("user/123"));
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/// assert!(!resource.is_match("/foo"));
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/// ```
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pub fn new<T: IntoPatterns>(paths: T) -> Self {
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Self::construct(paths, false)
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}
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/// Constructs a new resource definition using a pattern that performs prefix matching.
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///
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/// More specifically, the regular expressions generated for matching are different when using
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/// this method vs using `new`; they will not be appended with the `$` meta-character that
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/// matches the end of an input.
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///
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/// Although it will compile and run correctly, it is meaningless to construct a prefix
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/// resource definition with a tail segment; use [`new`][Self::new] in this case.
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///
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/// # Panics
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/// Panics if path pattern is malformed.
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///
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/// # Examples
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/// ```
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/// use actix_router::ResourceDef;
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///
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/// let resource = ResourceDef::prefix("/user/{id}");
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/// assert!(resource.is_match("/user/123"));
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/// assert!(resource.is_match("/user/123/stars"));
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/// assert!(!resource.is_match("user/123"));
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/// assert!(!resource.is_match("user/123/stars"));
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/// assert!(!resource.is_match("/foo"));
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/// ```
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pub fn prefix<T: IntoPatterns>(paths: T) -> Self {
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ResourceDef::construct(paths, true)
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}
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/// Constructs a new resource definition using a string pattern that performs prefix matching,
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/// ensuring a leading `/` if pattern is not empty.
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///
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/// # Panics
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/// Panics if path pattern is malformed.
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///
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/// # Examples
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/// ```
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/// use actix_router::ResourceDef;
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///
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/// let resource = ResourceDef::root_prefix("user/{id}");
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///
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/// assert_eq!(&resource, &ResourceDef::prefix("/user/{id}"));
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/// assert_eq!(&resource, &ResourceDef::root_prefix("/user/{id}"));
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/// assert_ne!(&resource, &ResourceDef::new("user/{id}"));
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/// assert_ne!(&resource, &ResourceDef::new("/user/{id}"));
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///
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/// assert!(resource.is_match("/user/123"));
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/// assert!(!resource.is_match("user/123"));
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/// ```
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pub fn root_prefix(path: &str) -> Self {
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ResourceDef::prefix(insert_slash(path).into_owned())
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}
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/// Returns a numeric resource ID.
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///
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/// If not explicitly set using [`set_id`][Self::set_id], this will return `0`.
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///
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let mut resource = ResourceDef::new("/root");
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/// assert_eq!(resource.id(), 0);
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///
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/// resource.set_id(42);
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/// assert_eq!(resource.id(), 42);
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/// ```
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pub fn id(&self) -> u16 {
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self.id
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}
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/// Set numeric resource ID.
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///
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let mut resource = ResourceDef::new("/root");
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/// resource.set_id(42);
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/// assert_eq!(resource.id(), 42);
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/// ```
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pub fn set_id(&mut self, id: u16) {
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self.id = id;
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}
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/// Returns resource definition name, if set.
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///
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let mut resource = ResourceDef::new("/root");
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/// assert!(resource.name().is_none());
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///
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/// resource.set_name("root");
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/// assert_eq!(resource.name().unwrap(), "root");
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pub fn name(&self) -> Option<&str> {
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self.name.as_deref()
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}
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/// Assigns a new name to the resource.
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///
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/// # Panics
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/// Panics if `name` is an empty string.
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///
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let mut resource = ResourceDef::new("/root");
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/// resource.set_name("root");
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/// assert_eq!(resource.name().unwrap(), "root");
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/// ```
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pub fn set_name(&mut self, name: impl Into<String>) {
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let name = name.into();
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assert!(!name.is_empty(), "resource name should not be empty");
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self.name = Some(name)
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}
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/// Returns `true` if pattern type is prefix.
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///
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// assert!(ResourceDef::prefix("/user").is_prefix());
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/// assert!(!ResourceDef::new("/user").is_prefix());
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/// ```
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pub fn is_prefix(&self) -> bool {
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self.is_prefix
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}
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|
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/// Returns the pattern string that generated the resource definition.
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///
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/// If definition is constructed with multiple patterns, the first pattern is returned. To get
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/// all patterns, use [`patterns_iter`][Self::pattern_iter]. If resource has 0 patterns,
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/// returns `None`.
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///
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let mut resource = ResourceDef::new("/user/{id}");
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/// assert_eq!(resource.pattern().unwrap(), "/user/{id}");
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///
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/// let mut resource = ResourceDef::new(["/profile", "/user/{id}"]);
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/// assert_eq!(resource.pattern(), Some("/profile"));
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pub fn pattern(&self) -> Option<&str> {
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match &self.patterns {
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Patterns::Single(pattern) => Some(pattern.as_str()),
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Patterns::List(patterns) => patterns.first().map(AsRef::as_ref),
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}
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}
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|
|
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/// Returns iterator of pattern strings that generated the resource definition.
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///
|
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/// # Examples
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/// ```
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/// # use actix_router::ResourceDef;
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/// let mut resource = ResourceDef::new("/root");
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/// let mut iter = resource.pattern_iter();
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/// assert_eq!(iter.next().unwrap(), "/root");
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/// assert!(iter.next().is_none());
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///
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/// let mut resource = ResourceDef::new(["/root", "/backup"]);
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/// let mut iter = resource.pattern_iter();
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/// assert_eq!(iter.next().unwrap(), "/root");
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/// assert_eq!(iter.next().unwrap(), "/backup");
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/// assert!(iter.next().is_none());
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pub fn pattern_iter(&self) -> impl Iterator<Item = &str> {
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struct PatternIter<'a> {
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patterns: &'a Patterns,
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list_idx: usize,
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done: bool,
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}
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impl<'a> Iterator for PatternIter<'a> {
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type Item = &'a str;
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fn next(&mut self) -> Option<Self::Item> {
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match &self.patterns {
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Patterns::Single(pattern) => {
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if self.done {
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return None;
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}
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self.done = true;
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Some(pattern.as_str())
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}
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Patterns::List(patterns) if patterns.is_empty() => None,
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Patterns::List(patterns) => match patterns.get(self.list_idx) {
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Some(pattern) => {
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self.list_idx += 1;
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Some(pattern.as_str())
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}
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None => {
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// fast path future call
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self.done = true;
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None
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}
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},
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}
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}
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|
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fn size_hint(&self) -> (usize, Option<usize>) {
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match &self.patterns {
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Patterns::Single(_) => (1, Some(1)),
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Patterns::List(patterns) => (patterns.len(), Some(patterns.len())),
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}
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}
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}
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PatternIter {
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patterns: &self.patterns,
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list_idx: 0,
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done: false,
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}
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}
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|
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/// Joins two resources.
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///
|
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/// Resulting resource is prefix if `other` is prefix.
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///
|
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/// # Examples
|
|
/// ```
|
|
/// # use actix_router::ResourceDef;
|
|
/// let joined = ResourceDef::prefix("/root").join(&ResourceDef::prefix("/seg"));
|
|
/// assert_eq!(joined, ResourceDef::prefix("/root/seg"));
|
|
/// ```
|
|
pub fn join(&self, other: &ResourceDef) -> ResourceDef {
|
|
let patterns = self
|
|
.pattern_iter()
|
|
.flat_map(move |this| other.pattern_iter().map(move |other| (this, other)))
|
|
.map(|(this, other)| [this, other].join(""))
|
|
.collect::<Vec<_>>();
|
|
|
|
match patterns.len() {
|
|
1 => ResourceDef::construct(&patterns[0], other.is_prefix()),
|
|
_ => ResourceDef::construct(patterns, other.is_prefix()),
|
|
}
|
|
}
|
|
|
|
/// Returns `true` if `path` matches this resource.
|
|
///
|
|
/// The behavior of this method depends on how the `ResourceDef` was constructed. For example,
|
|
/// static resources will not be able to match as many paths as dynamic and prefix resources.
|
|
/// See [`ResourceDef`] struct docs for details on resource definition types.
|
|
///
|
|
/// This method will always agree with [`find_match`][Self::find_match] on whether the path
|
|
/// matches or not.
|
|
///
|
|
/// # Examples
|
|
/// ```
|
|
/// use actix_router::ResourceDef;
|
|
///
|
|
/// // static resource
|
|
/// let resource = ResourceDef::new("/user");
|
|
/// assert!(resource.is_match("/user"));
|
|
/// assert!(!resource.is_match("/users"));
|
|
/// assert!(!resource.is_match("/user/123"));
|
|
/// assert!(!resource.is_match("/foo"));
|
|
///
|
|
/// // dynamic resource
|
|
/// let resource = ResourceDef::new("/user/{user_id}");
|
|
/// assert!(resource.is_match("/user/123"));
|
|
/// assert!(!resource.is_match("/user/123/stars"));
|
|
///
|
|
/// // prefix resource
|
|
/// let resource = ResourceDef::prefix("/root");
|
|
/// assert!(resource.is_match("/root"));
|
|
/// assert!(resource.is_match("/root/leaf"));
|
|
/// assert!(!resource.is_match("/roots"));
|
|
///
|
|
/// // more examples are shown in the `ResourceDef` struct docs
|
|
/// ```
|
|
#[inline]
|
|
pub fn is_match(&self, path: &str) -> bool {
|
|
// this function could be expressed as:
|
|
// `self.find_match(path).is_some()`
|
|
// but this skips some checks and uses potentially faster regex methods
|
|
|
|
match &self.pat_type {
|
|
PatternType::Static(pattern) => self.static_match(pattern, path).is_some(),
|
|
PatternType::Dynamic(re, _) => re.is_match(path),
|
|
PatternType::DynamicSet(re, _) => re.is_match(path),
|
|
}
|
|
}
|
|
|
|
/// Tries to match `path` to this resource, returning the position in the path where the
|
|
/// match ends.
|
|
///
|
|
/// This method will always agree with [`is_match`][Self::is_match] on whether the path matches
|
|
/// or not.
|
|
///
|
|
/// # Examples
|
|
/// ```
|
|
/// use actix_router::ResourceDef;
|
|
///
|
|
/// // static resource
|
|
/// let resource = ResourceDef::new("/user");
|
|
/// assert_eq!(resource.find_match("/user"), Some(5));
|
|
/// assert!(resource.find_match("/user/").is_none());
|
|
/// assert!(resource.find_match("/user/123").is_none());
|
|
/// assert!(resource.find_match("/foo").is_none());
|
|
///
|
|
/// // constant prefix resource
|
|
/// let resource = ResourceDef::prefix("/user");
|
|
/// assert_eq!(resource.find_match("/user"), Some(5));
|
|
/// assert_eq!(resource.find_match("/user/"), Some(5));
|
|
/// assert_eq!(resource.find_match("/user/123"), Some(5));
|
|
///
|
|
/// // dynamic prefix resource
|
|
/// let resource = ResourceDef::prefix("/user/{id}");
|
|
/// assert_eq!(resource.find_match("/user/123"), Some(9));
|
|
/// assert_eq!(resource.find_match("/user/1234/"), Some(10));
|
|
/// assert_eq!(resource.find_match("/user/12345/stars"), Some(11));
|
|
/// assert!(resource.find_match("/user/").is_none());
|
|
///
|
|
/// // multi-pattern resource
|
|
/// let resource = ResourceDef::new(["/user/{id}", "/profile/{id}"]);
|
|
/// assert_eq!(resource.find_match("/user/123"), Some(9));
|
|
/// assert_eq!(resource.find_match("/profile/1234"), Some(13));
|
|
/// ```
|
|
pub fn find_match(&self, path: &str) -> Option<usize> {
|
|
match &self.pat_type {
|
|
PatternType::Static(pattern) => self.static_match(pattern, path),
|
|
|
|
PatternType::Dynamic(re, _) => Some(re.captures(path)?[1].len()),
|
|
|
|
PatternType::DynamicSet(re, params) => {
|
|
let idx = re.matches(path).into_iter().next()?;
|
|
let (ref pattern, _) = params[idx];
|
|
Some(pattern.captures(path)?[1].len())
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Collects dynamic segment values into `resource`.
|
|
///
|
|
/// Returns `true` if `path` matches this resource.
|
|
///
|
|
/// # Examples
|
|
/// ```
|
|
/// use actix_router::{Path, ResourceDef};
|
|
///
|
|
/// let resource = ResourceDef::prefix("/user/{id}");
|
|
/// let mut path = Path::new("/user/123/stars");
|
|
/// assert!(resource.capture_match_info(&mut path));
|
|
/// assert_eq!(path.get("id").unwrap(), "123");
|
|
/// assert_eq!(path.unprocessed(), "/stars");
|
|
///
|
|
/// let resource = ResourceDef::new("/blob/{path}*");
|
|
/// let mut path = Path::new("/blob/HEAD/Cargo.toml");
|
|
/// assert!(resource.capture_match_info(&mut path));
|
|
/// assert_eq!(path.get("path").unwrap(), "HEAD/Cargo.toml");
|
|
/// assert_eq!(path.unprocessed(), "");
|
|
/// ```
|
|
pub fn capture_match_info<R: Resource>(&self, resource: &mut R) -> bool {
|
|
self.capture_match_info_fn(resource, |_| true)
|
|
}
|
|
|
|
/// Collects dynamic segment values into `resource` after matching paths and executing
|
|
/// check function.
|
|
///
|
|
/// The check function is given a reference to the passed resource and optional arbitrary data.
|
|
/// This is useful if you want to conditionally match on some non-path related aspect of the
|
|
/// resource type.
|
|
///
|
|
/// Returns `true` if resource path matches this resource definition _and_ satisfies the
|
|
/// given check function.
|
|
///
|
|
/// # Examples
|
|
/// ```
|
|
/// use actix_router::{Path, ResourceDef};
|
|
///
|
|
/// fn try_match(resource: &ResourceDef, path: &mut Path<&str>) -> bool {
|
|
/// let admin_allowed = std::env::var("ADMIN_ALLOWED").is_ok();
|
|
///
|
|
/// resource.capture_match_info_fn(
|
|
/// path,
|
|
/// // when env var is not set, reject when path contains "admin"
|
|
/// |path| !(!admin_allowed && path.as_str().contains("admin")),
|
|
/// )
|
|
/// }
|
|
///
|
|
/// let resource = ResourceDef::prefix("/user/{id}");
|
|
///
|
|
/// // path matches; segment values are collected into path
|
|
/// let mut path = Path::new("/user/james/stars");
|
|
/// assert!(try_match(&resource, &mut path));
|
|
/// assert_eq!(path.get("id").unwrap(), "james");
|
|
/// assert_eq!(path.unprocessed(), "/stars");
|
|
///
|
|
/// // path matches but fails check function; no segments are collected
|
|
/// let mut path = Path::new("/user/admin/stars");
|
|
/// assert!(!try_match(&resource, &mut path));
|
|
/// assert_eq!(path.unprocessed(), "/user/admin/stars");
|
|
/// ```
|
|
pub fn capture_match_info_fn<R, F>(&self, resource: &mut R, check_fn: F) -> bool
|
|
where
|
|
R: Resource,
|
|
F: FnOnce(&R) -> bool,
|
|
{
|
|
let mut segments = <[PathItem; MAX_DYNAMIC_SEGMENTS]>::default();
|
|
let path = resource.resource_path();
|
|
let path_str = path.unprocessed();
|
|
|
|
let (matched_len, matched_vars) = match &self.pat_type {
|
|
PatternType::Static(pattern) => match self.static_match(pattern, path_str) {
|
|
Some(len) => (len, None),
|
|
None => return false,
|
|
},
|
|
|
|
PatternType::Dynamic(re, names) => {
|
|
let captures = match re.captures(path.unprocessed()) {
|
|
Some(captures) => captures,
|
|
_ => return false,
|
|
};
|
|
|
|
for (no, name) in names.iter().enumerate() {
|
|
if let Some(m) = captures.name(name) {
|
|
segments[no] = PathItem::Segment(m.start() as u16, m.end() as u16);
|
|
} else {
|
|
error!("Dynamic path match but not all segments found: {}", name);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
(captures[1].len(), Some(names))
|
|
}
|
|
|
|
PatternType::DynamicSet(re, params) => {
|
|
let path = path.unprocessed();
|
|
let (pattern, names) = match re.matches(path).into_iter().next() {
|
|
Some(idx) => ¶ms[idx],
|
|
_ => return false,
|
|
};
|
|
|
|
let captures = match pattern.captures(path.path()) {
|
|
Some(captures) => captures,
|
|
_ => return false,
|
|
};
|
|
|
|
for (no, name) in names.iter().enumerate() {
|
|
if let Some(m) = captures.name(name) {
|
|
segments[no] = PathItem::Segment(m.start() as u16, m.end() as u16);
|
|
} else {
|
|
error!("Dynamic path match but not all segments found: {}", name);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
(captures[1].len(), Some(names))
|
|
}
|
|
};
|
|
|
|
if !check_fn(resource) {
|
|
return false;
|
|
}
|
|
|
|
// Modify `path` to skip matched part and store matched segments
|
|
let path = resource.resource_path();
|
|
|
|
if let Some(vars) = matched_vars {
|
|
for i in 0..vars.len() {
|
|
path.add(vars[i], mem::take(&mut segments[i]));
|
|
}
|
|
}
|
|
|
|
path.skip(matched_len as u16);
|
|
|
|
true
|
|
}
|
|
|
|
/// Assembles resource path using a closure that maps variable segment names to values.
|
|
fn build_resource_path<F, I>(&self, path: &mut String, mut vars: F) -> bool
|
|
where
|
|
F: FnMut(&str) -> Option<I>,
|
|
I: AsRef<str>,
|
|
{
|
|
for segment in &self.segments {
|
|
match segment {
|
|
PatternSegment::Const(val) => path.push_str(val),
|
|
PatternSegment::Var(name) => match vars(name) {
|
|
Some(val) => path.push_str(val.as_ref()),
|
|
_ => return false,
|
|
},
|
|
}
|
|
}
|
|
|
|
true
|
|
}
|
|
|
|
/// Assembles full resource path from iterator of dynamic segment values.
|
|
///
|
|
/// Returns `true` on success.
|
|
///
|
|
/// For multi-pattern resources, the first pattern is used under the assumption that it would be
|
|
/// equivalent to any other choice.
|
|
///
|
|
/// # Examples
|
|
/// ```
|
|
/// # use actix_router::ResourceDef;
|
|
/// let mut s = String::new();
|
|
/// let resource = ResourceDef::new("/user/{id}/post/{title}");
|
|
///
|
|
/// assert!(resource.resource_path_from_iter(&mut s, &["123", "my-post"]));
|
|
/// assert_eq!(s, "/user/123/post/my-post");
|
|
/// ```
|
|
pub fn resource_path_from_iter<I>(&self, path: &mut String, values: I) -> bool
|
|
where
|
|
I: IntoIterator,
|
|
I::Item: AsRef<str>,
|
|
{
|
|
let mut iter = values.into_iter();
|
|
self.build_resource_path(path, |_| iter.next())
|
|
}
|
|
|
|
/// Assembles resource path from map of dynamic segment values.
|
|
///
|
|
/// Returns `true` on success.
|
|
///
|
|
/// For multi-pattern resources, the first pattern is used under the assumption that it would be
|
|
/// equivalent to any other choice.
|
|
///
|
|
/// # Examples
|
|
/// ```
|
|
/// # use std::collections::HashMap;
|
|
/// # use actix_router::ResourceDef;
|
|
/// let mut s = String::new();
|
|
/// let resource = ResourceDef::new("/user/{id}/post/{title}");
|
|
///
|
|
/// let mut map = HashMap::new();
|
|
/// map.insert("id", "123");
|
|
/// map.insert("title", "my-post");
|
|
///
|
|
/// assert!(resource.resource_path_from_map(&mut s, &map));
|
|
/// assert_eq!(s, "/user/123/post/my-post");
|
|
/// ```
|
|
pub fn resource_path_from_map<K, V, S>(
|
|
&self,
|
|
path: &mut String,
|
|
values: &HashMap<K, V, S>,
|
|
) -> bool
|
|
where
|
|
K: Borrow<str> + Eq + Hash,
|
|
V: AsRef<str>,
|
|
S: BuildHasher,
|
|
{
|
|
self.build_resource_path(path, |name| values.get(name))
|
|
}
|
|
|
|
/// Returns true if `prefix` acts as a proper prefix (i.e., separated by a slash) in `path`.
|
|
fn static_match(&self, pattern: &str, path: &str) -> Option<usize> {
|
|
let rem = path.strip_prefix(pattern)?;
|
|
|
|
match self.is_prefix {
|
|
// resource is not a prefix so an exact match is needed
|
|
false if rem.is_empty() => Some(pattern.len()),
|
|
|
|
// resource is a prefix so rem should start with a path delimiter
|
|
true if rem.is_empty() || rem.starts_with('/') => Some(pattern.len()),
|
|
|
|
// otherwise, no match
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
fn construct<T: IntoPatterns>(paths: T, is_prefix: bool) -> Self {
|
|
let patterns = paths.patterns();
|
|
let (pat_type, segments) = match &patterns {
|
|
Patterns::Single(pattern) => ResourceDef::parse(pattern, is_prefix, false),
|
|
|
|
// since zero length pattern sets are possible
|
|
// just return a useless `ResourceDef`
|
|
Patterns::List(patterns) if patterns.is_empty() => (
|
|
PatternType::DynamicSet(RegexSet::empty(), Vec::new()),
|
|
Vec::new(),
|
|
),
|
|
|
|
Patterns::List(patterns) => {
|
|
let mut re_set = Vec::with_capacity(patterns.len());
|
|
let mut pattern_data = Vec::new();
|
|
let mut segments = None;
|
|
|
|
for pattern in patterns {
|
|
match ResourceDef::parse(pattern, is_prefix, true) {
|
|
(PatternType::Dynamic(re, names), segs) => {
|
|
re_set.push(re.as_str().to_owned());
|
|
pattern_data.push((re, names));
|
|
segments.get_or_insert(segs);
|
|
}
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
|
|
let pattern_re_set = RegexSet::new(re_set).unwrap();
|
|
let segments = segments.unwrap_or_default();
|
|
|
|
(
|
|
PatternType::DynamicSet(pattern_re_set, pattern_data),
|
|
segments,
|
|
)
|
|
}
|
|
};
|
|
|
|
ResourceDef {
|
|
id: 0,
|
|
name: None,
|
|
patterns,
|
|
is_prefix,
|
|
pat_type,
|
|
segments,
|
|
}
|
|
}
|
|
|
|
/// Parses a dynamic segment definition from a pattern.
|
|
///
|
|
/// The returned tuple includes:
|
|
/// - the segment descriptor, either `Var` or `Tail`
|
|
/// - the segment's regex to check values against
|
|
/// - the remaining, unprocessed string slice
|
|
/// - whether the parsed parameter represents a tail pattern
|
|
///
|
|
/// # Panics
|
|
/// Panics if given patterns does not contain a dynamic segment.
|
|
fn parse_param(pattern: &str) -> (PatternSegment, String, &str, bool) {
|
|
const DEFAULT_PATTERN: &str = "[^/]+";
|
|
const DEFAULT_PATTERN_TAIL: &str = ".*";
|
|
|
|
let mut params_nesting = 0usize;
|
|
let close_idx = pattern
|
|
.find(|c| match c {
|
|
'{' => {
|
|
params_nesting += 1;
|
|
false
|
|
}
|
|
'}' => {
|
|
params_nesting -= 1;
|
|
params_nesting == 0
|
|
}
|
|
_ => false,
|
|
})
|
|
.unwrap_or_else(|| {
|
|
panic!(
|
|
r#"pattern "{}" contains malformed dynamic segment"#,
|
|
pattern
|
|
)
|
|
});
|
|
|
|
let (mut param, mut unprocessed) = pattern.split_at(close_idx + 1);
|
|
|
|
// remove outer curly brackets
|
|
param = ¶m[1..param.len() - 1];
|
|
|
|
let tail = unprocessed == "*";
|
|
|
|
let (name, pattern) = match param.find(':') {
|
|
Some(idx) => {
|
|
assert!(!tail, "custom regex is not supported for tail match");
|
|
|
|
let (name, pattern) = param.split_at(idx);
|
|
(name, &pattern[1..])
|
|
}
|
|
None => (
|
|
param,
|
|
if tail {
|
|
unprocessed = &unprocessed[1..];
|
|
DEFAULT_PATTERN_TAIL
|
|
} else {
|
|
DEFAULT_PATTERN
|
|
},
|
|
),
|
|
};
|
|
|
|
let segment = PatternSegment::Var(name.to_string());
|
|
let regex = format!(r"(?P<{}>{})", &name, &pattern);
|
|
|
|
(segment, regex, unprocessed, tail)
|
|
}
|
|
|
|
/// Parse `pattern` using `is_prefix` and `force_dynamic` flags.
|
|
///
|
|
/// Parameters:
|
|
/// - `is_prefix`: Use `true` if `pattern` should be treated as a prefix; i.e., a conforming
|
|
/// path will be a match even if it has parts remaining to process
|
|
/// - `force_dynamic`: Use `true` to disallow the return of static and prefix segments.
|
|
///
|
|
/// The returned tuple includes:
|
|
/// - the pattern type detected, either `Static`, `Prefix`, or `Dynamic`
|
|
/// - a list of segment descriptors from the pattern
|
|
fn parse(
|
|
pattern: &str,
|
|
is_prefix: bool,
|
|
force_dynamic: bool,
|
|
) -> (PatternType, Vec<PatternSegment>) {
|
|
if !force_dynamic && pattern.find('{').is_none() && !pattern.ends_with('*') {
|
|
// pattern is static
|
|
return (
|
|
PatternType::Static(pattern.to_owned()),
|
|
vec![PatternSegment::Const(pattern.to_owned())],
|
|
);
|
|
}
|
|
|
|
let mut unprocessed = pattern;
|
|
let mut segments = Vec::new();
|
|
let mut re = format!("{}^", REGEX_FLAGS);
|
|
let mut dyn_segment_count = 0;
|
|
let mut has_tail_segment = false;
|
|
|
|
while let Some(idx) = unprocessed.find('{') {
|
|
let (prefix, rem) = unprocessed.split_at(idx);
|
|
|
|
segments.push(PatternSegment::Const(prefix.to_owned()));
|
|
re.push_str(&escape(prefix));
|
|
|
|
let (param_pattern, re_part, rem, tail) = Self::parse_param(rem);
|
|
|
|
if tail {
|
|
has_tail_segment = true;
|
|
}
|
|
|
|
segments.push(param_pattern);
|
|
re.push_str(&re_part);
|
|
|
|
unprocessed = rem;
|
|
dyn_segment_count += 1;
|
|
}
|
|
|
|
if is_prefix && has_tail_segment {
|
|
// tail segments in prefixes have no defined semantics
|
|
|
|
#[cfg(not(test))]
|
|
tracing::warn!(
|
|
"Prefix resources should not have tail segments. \
|
|
Use `ResourceDef::new` constructor. \
|
|
This may become a panic in the future."
|
|
);
|
|
|
|
// panic in tests to make this case detectable
|
|
#[cfg(test)]
|
|
panic!("prefix resource definitions should not have tail segments");
|
|
}
|
|
|
|
if unprocessed.ends_with('*') {
|
|
// unnamed tail segment
|
|
|
|
#[cfg(not(test))]
|
|
tracing::warn!(
|
|
"Tail segments must have names. \
|
|
Consider `.../{{tail}}*`. \
|
|
This may become a panic in the future."
|
|
);
|
|
|
|
// panic in tests to make this case detectable
|
|
#[cfg(test)]
|
|
panic!("tail segments must have names");
|
|
} else if !has_tail_segment && !unprocessed.is_empty() {
|
|
// prevent `Const("")` element from being added after last dynamic segment
|
|
|
|
segments.push(PatternSegment::Const(unprocessed.to_owned()));
|
|
re.push_str(&escape(unprocessed));
|
|
}
|
|
|
|
assert!(
|
|
dyn_segment_count <= MAX_DYNAMIC_SEGMENTS,
|
|
"Only {} dynamic segments are allowed, provided: {}",
|
|
MAX_DYNAMIC_SEGMENTS,
|
|
dyn_segment_count
|
|
);
|
|
|
|
// Store the pattern in capture group #1 to have context info outside it
|
|
let mut re = format!("({})", re);
|
|
|
|
// Ensure the match ends at a segment boundary
|
|
if !has_tail_segment {
|
|
if is_prefix {
|
|
re.push_str(r"(/|$)");
|
|
} else {
|
|
re.push('$');
|
|
}
|
|
}
|
|
|
|
let re = match Regex::new(&re) {
|
|
Ok(re) => re,
|
|
Err(err) => panic!("Wrong path pattern: \"{}\" {}", pattern, err),
|
|
};
|
|
|
|
// `Bok::leak(Box::new(name))` is an intentional memory leak. In typical applications the
|
|
// routing table is only constructed once (per worker) so leak is bounded. If you are
|
|
// constructing `ResourceDef`s more than once in your application's lifecycle you would
|
|
// expect a linear increase in leaked memory over time.
|
|
let names = re
|
|
.capture_names()
|
|
.filter_map(|name| name.map(|name| Box::leak(Box::new(name.to_owned())).as_str()))
|
|
.collect();
|
|
|
|
(PatternType::Dynamic(re, names), segments)
|
|
}
|
|
}
|
|
|
|
impl Eq for ResourceDef {}
|
|
|
|
impl PartialEq for ResourceDef {
|
|
fn eq(&self, other: &ResourceDef) -> bool {
|
|
self.patterns == other.patterns && self.is_prefix == other.is_prefix
|
|
}
|
|
}
|
|
|
|
impl Hash for ResourceDef {
|
|
fn hash<H: Hasher>(&self, state: &mut H) {
|
|
self.patterns.hash(state);
|
|
}
|
|
}
|
|
|
|
impl<'a> From<&'a str> for ResourceDef {
|
|
fn from(path: &'a str) -> ResourceDef {
|
|
ResourceDef::new(path)
|
|
}
|
|
}
|
|
|
|
impl From<String> for ResourceDef {
|
|
fn from(path: String) -> ResourceDef {
|
|
ResourceDef::new(path)
|
|
}
|
|
}
|
|
|
|
pub(crate) fn insert_slash(path: &str) -> Cow<'_, str> {
|
|
if !path.is_empty() && !path.starts_with('/') {
|
|
let mut new_path = String::with_capacity(path.len() + 1);
|
|
new_path.push('/');
|
|
new_path.push_str(path);
|
|
Cow::Owned(new_path)
|
|
} else {
|
|
Cow::Borrowed(path)
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use crate::Path;
|
|
|
|
#[test]
|
|
fn equivalence() {
|
|
assert_eq!(
|
|
ResourceDef::root_prefix("/root"),
|
|
ResourceDef::prefix("/root")
|
|
);
|
|
assert_eq!(
|
|
ResourceDef::root_prefix("root"),
|
|
ResourceDef::prefix("/root")
|
|
);
|
|
assert_eq!(
|
|
ResourceDef::root_prefix("/{id}"),
|
|
ResourceDef::prefix("/{id}")
|
|
);
|
|
assert_eq!(
|
|
ResourceDef::root_prefix("{id}"),
|
|
ResourceDef::prefix("/{id}")
|
|
);
|
|
|
|
assert_eq!(ResourceDef::new("/"), ResourceDef::new(["/"]));
|
|
assert_eq!(ResourceDef::new("/"), ResourceDef::new(vec!["/"]));
|
|
|
|
assert_ne!(ResourceDef::new(""), ResourceDef::prefix(""));
|
|
assert_ne!(ResourceDef::new("/"), ResourceDef::prefix("/"));
|
|
assert_ne!(ResourceDef::new("/{id}"), ResourceDef::prefix("/{id}"));
|
|
}
|
|
|
|
#[test]
|
|
fn parse_static() {
|
|
let re = ResourceDef::new("");
|
|
|
|
assert!(!re.is_prefix());
|
|
|
|
assert!(re.is_match(""));
|
|
assert!(!re.is_match("/"));
|
|
assert_eq!(re.find_match(""), Some(0));
|
|
assert_eq!(re.find_match("/"), None);
|
|
|
|
let re = ResourceDef::new("/");
|
|
assert!(re.is_match("/"));
|
|
assert!(!re.is_match(""));
|
|
assert!(!re.is_match("/foo"));
|
|
|
|
let re = ResourceDef::new("/name");
|
|
assert!(re.is_match("/name"));
|
|
assert!(!re.is_match("/name1"));
|
|
assert!(!re.is_match("/name/"));
|
|
assert!(!re.is_match("/name~"));
|
|
|
|
let mut path = Path::new("/name");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
assert_eq!(re.find_match("/name"), Some(5));
|
|
assert_eq!(re.find_match("/name1"), None);
|
|
assert_eq!(re.find_match("/name/"), None);
|
|
assert_eq!(re.find_match("/name~"), None);
|
|
|
|
let re = ResourceDef::new("/name/");
|
|
assert!(re.is_match("/name/"));
|
|
assert!(!re.is_match("/name"));
|
|
assert!(!re.is_match("/name/gs"));
|
|
|
|
let re = ResourceDef::new("/user/profile");
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(!re.is_match("/user/profile/profile"));
|
|
|
|
let mut path = Path::new("/user/profile");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.unprocessed(), "");
|
|
}
|
|
|
|
#[test]
|
|
fn parse_param() {
|
|
let re = ResourceDef::new("/user/{id}");
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(re.is_match("/user/2345"));
|
|
assert!(!re.is_match("/user/2345/"));
|
|
assert!(!re.is_match("/user/2345/sdg"));
|
|
|
|
let mut path = Path::new("/user/profile");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "profile");
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
let mut path = Path::new("/user/1245125");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "1245125");
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
let re = ResourceDef::new("/v{version}/resource/{id}");
|
|
assert!(re.is_match("/v1/resource/320120"));
|
|
assert!(!re.is_match("/v/resource/1"));
|
|
assert!(!re.is_match("/resource"));
|
|
|
|
let mut path = Path::new("/v151/resource/adage32");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("version").unwrap(), "151");
|
|
assert_eq!(path.get("id").unwrap(), "adage32");
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
let re = ResourceDef::new("/{id:[[:digit:]]{6}}");
|
|
assert!(re.is_match("/012345"));
|
|
assert!(!re.is_match("/012"));
|
|
assert!(!re.is_match("/01234567"));
|
|
assert!(!re.is_match("/XXXXXX"));
|
|
|
|
let mut path = Path::new("/012345");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "012345");
|
|
assert_eq!(path.unprocessed(), "");
|
|
}
|
|
|
|
#[allow(clippy::cognitive_complexity)]
|
|
#[test]
|
|
fn dynamic_set() {
|
|
let re = ResourceDef::new(vec![
|
|
"/user/{id}",
|
|
"/v{version}/resource/{id}",
|
|
"/{id:[[:digit:]]{6}}",
|
|
"/static",
|
|
]);
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(re.is_match("/user/2345"));
|
|
assert!(!re.is_match("/user/2345/"));
|
|
assert!(!re.is_match("/user/2345/sdg"));
|
|
|
|
let mut path = Path::new("/user/profile");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "profile");
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
let mut path = Path::new("/user/1245125");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "1245125");
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
assert!(re.is_match("/v1/resource/320120"));
|
|
assert!(!re.is_match("/v/resource/1"));
|
|
assert!(!re.is_match("/resource"));
|
|
|
|
let mut path = Path::new("/v151/resource/adage32");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("version").unwrap(), "151");
|
|
assert_eq!(path.get("id").unwrap(), "adage32");
|
|
|
|
assert!(re.is_match("/012345"));
|
|
assert!(!re.is_match("/012"));
|
|
assert!(!re.is_match("/01234567"));
|
|
assert!(!re.is_match("/XXXXXX"));
|
|
|
|
assert!(re.is_match("/static"));
|
|
assert!(!re.is_match("/a/static"));
|
|
assert!(!re.is_match("/static/a"));
|
|
|
|
let mut path = Path::new("/012345");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "012345");
|
|
|
|
let re = ResourceDef::new([
|
|
"/user/{id}",
|
|
"/v{version}/resource/{id}",
|
|
"/{id:[[:digit:]]{6}}",
|
|
]);
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(re.is_match("/user/2345"));
|
|
assert!(!re.is_match("/user/2345/"));
|
|
assert!(!re.is_match("/user/2345/sdg"));
|
|
|
|
let re = ResourceDef::new([
|
|
"/user/{id}".to_string(),
|
|
"/v{version}/resource/{id}".to_string(),
|
|
"/{id:[[:digit:]]{6}}".to_string(),
|
|
]);
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(re.is_match("/user/2345"));
|
|
assert!(!re.is_match("/user/2345/"));
|
|
assert!(!re.is_match("/user/2345/sdg"));
|
|
}
|
|
|
|
#[test]
|
|
fn dynamic_set_prefix() {
|
|
let re = ResourceDef::prefix(vec!["/u/{id}", "/{id:[[:digit:]]{3}}"]);
|
|
|
|
assert_eq!(re.find_match("/u/abc"), Some(6));
|
|
assert_eq!(re.find_match("/u/abc/123"), Some(6));
|
|
assert_eq!(re.find_match("/s/user/profile"), None);
|
|
|
|
assert_eq!(re.find_match("/123"), Some(4));
|
|
assert_eq!(re.find_match("/123/456"), Some(4));
|
|
assert_eq!(re.find_match("/12345"), None);
|
|
|
|
let mut path = Path::new("/151/res");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "151");
|
|
assert_eq!(path.unprocessed(), "/res");
|
|
}
|
|
|
|
#[test]
|
|
fn parse_tail() {
|
|
let re = ResourceDef::new("/user/-{id}*");
|
|
|
|
let mut path = Path::new("/user/-profile");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "profile");
|
|
|
|
let mut path = Path::new("/user/-2345");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "2345");
|
|
|
|
let mut path = Path::new("/user/-2345/");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "2345/");
|
|
|
|
let mut path = Path::new("/user/-2345/sdg");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "2345/sdg");
|
|
}
|
|
|
|
#[test]
|
|
fn static_tail() {
|
|
let re = ResourceDef::new("/user{tail}*");
|
|
assert!(re.is_match("/users"));
|
|
assert!(re.is_match("/user-foo"));
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(re.is_match("/user/2345"));
|
|
assert!(re.is_match("/user/2345/"));
|
|
assert!(re.is_match("/user/2345/sdg"));
|
|
assert!(!re.is_match("/foo/profile"));
|
|
|
|
let re = ResourceDef::new("/user/{tail}*");
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(re.is_match("/user/2345"));
|
|
assert!(re.is_match("/user/2345/"));
|
|
assert!(re.is_match("/user/2345/sdg"));
|
|
assert!(!re.is_match("/foo/profile"));
|
|
}
|
|
|
|
#[test]
|
|
fn dynamic_tail() {
|
|
let re = ResourceDef::new("/user/{id}/{tail}*");
|
|
assert!(!re.is_match("/user/2345"));
|
|
let mut path = Path::new("/user/2345/sdg");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "2345");
|
|
assert_eq!(path.get("tail").unwrap(), "sdg");
|
|
assert_eq!(path.unprocessed(), "");
|
|
}
|
|
|
|
#[test]
|
|
fn newline_patterns_and_paths() {
|
|
let re = ResourceDef::new("/user/a\nb");
|
|
assert!(re.is_match("/user/a\nb"));
|
|
assert!(!re.is_match("/user/a\nb/profile"));
|
|
|
|
let re = ResourceDef::new("/a{x}b/test/a{y}b");
|
|
let mut path = Path::new("/a\nb/test/a\nb");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("x").unwrap(), "\n");
|
|
assert_eq!(path.get("y").unwrap(), "\n");
|
|
|
|
let re = ResourceDef::new("/user/{tail}*");
|
|
assert!(re.is_match("/user/a\nb/"));
|
|
|
|
let re = ResourceDef::new("/user/{id}*");
|
|
let mut path = Path::new("/user/a\nb/a\nb");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "a\nb/a\nb");
|
|
|
|
let re = ResourceDef::new("/user/{id:.*}");
|
|
let mut path = Path::new("/user/a\nb/a\nb");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "a\nb/a\nb");
|
|
}
|
|
|
|
#[cfg(feature = "http")]
|
|
#[test]
|
|
fn parse_urlencoded_param() {
|
|
use std::convert::TryFrom;
|
|
|
|
let re = ResourceDef::new("/user/{id}/test");
|
|
|
|
let mut path = Path::new("/user/2345/test");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "2345");
|
|
|
|
let mut path = Path::new("/user/qwe%25/test");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "qwe%25");
|
|
|
|
let uri = http::Uri::try_from("/user/qwe%25/test").unwrap();
|
|
let mut path = Path::new(uri);
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.get("id").unwrap(), "qwe%25");
|
|
}
|
|
|
|
#[test]
|
|
fn prefix_static() {
|
|
let re = ResourceDef::prefix("/name");
|
|
|
|
assert!(re.is_prefix());
|
|
|
|
assert!(re.is_match("/name"));
|
|
assert!(re.is_match("/name/"));
|
|
assert!(re.is_match("/name/test/test"));
|
|
assert!(!re.is_match("/name1"));
|
|
assert!(!re.is_match("/name~"));
|
|
|
|
let mut path = Path::new("/name");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.unprocessed(), "");
|
|
|
|
let mut path = Path::new("/name/test");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.unprocessed(), "/test");
|
|
|
|
assert_eq!(re.find_match("/name"), Some(5));
|
|
assert_eq!(re.find_match("/name/"), Some(5));
|
|
assert_eq!(re.find_match("/name/test/test"), Some(5));
|
|
assert_eq!(re.find_match("/name1"), None);
|
|
assert_eq!(re.find_match("/name~"), None);
|
|
|
|
let re = ResourceDef::prefix("/name/");
|
|
assert!(re.is_match("/name/"));
|
|
assert!(re.is_match("/name//gs"));
|
|
assert!(!re.is_match("/name/gs"));
|
|
assert!(!re.is_match("/name"));
|
|
|
|
let mut path = Path::new("/name/gs");
|
|
assert!(!re.capture_match_info(&mut path));
|
|
|
|
let mut path = Path::new("/name//gs");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(path.unprocessed(), "/gs");
|
|
|
|
let re = ResourceDef::root_prefix("name/");
|
|
assert!(re.is_match("/name/"));
|
|
assert!(re.is_match("/name//gs"));
|
|
assert!(!re.is_match("/name/gs"));
|
|
assert!(!re.is_match("/name"));
|
|
|
|
let mut path = Path::new("/name/gs");
|
|
assert!(!re.capture_match_info(&mut path));
|
|
}
|
|
|
|
#[test]
|
|
fn prefix_dynamic() {
|
|
let re = ResourceDef::prefix("/{name}");
|
|
|
|
assert!(re.is_prefix());
|
|
|
|
assert!(re.is_match("/name/"));
|
|
assert!(re.is_match("/name/gs"));
|
|
assert!(re.is_match("/name"));
|
|
|
|
assert_eq!(re.find_match("/name/"), Some(5));
|
|
assert_eq!(re.find_match("/name/gs"), Some(5));
|
|
assert_eq!(re.find_match("/name"), Some(5));
|
|
assert_eq!(re.find_match(""), None);
|
|
|
|
let mut path = Path::new("/test2/");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(&path["name"], "test2");
|
|
assert_eq!(&path[0], "test2");
|
|
assert_eq!(path.unprocessed(), "/");
|
|
|
|
let mut path = Path::new("/test2/subpath1/subpath2/index.html");
|
|
assert!(re.capture_match_info(&mut path));
|
|
assert_eq!(&path["name"], "test2");
|
|
assert_eq!(&path[0], "test2");
|
|
assert_eq!(path.unprocessed(), "/subpath1/subpath2/index.html");
|
|
|
|
let resource = ResourceDef::prefix("/user");
|
|
// input string shorter than prefix
|
|
assert!(resource.find_match("/foo").is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn prefix_empty() {
|
|
let re = ResourceDef::prefix("");
|
|
|
|
assert!(re.is_prefix());
|
|
|
|
assert!(re.is_match(""));
|
|
assert!(re.is_match("/"));
|
|
assert!(re.is_match("/name/test/test"));
|
|
}
|
|
|
|
#[test]
|
|
fn build_path_list() {
|
|
let mut s = String::new();
|
|
let resource = ResourceDef::new("/user/{item1}/test");
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["user1"].iter()));
|
|
assert_eq!(s, "/user/user1/test");
|
|
|
|
let mut s = String::new();
|
|
let resource = ResourceDef::new("/user/{item1}/{item2}/test");
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["item", "item2"].iter()));
|
|
assert_eq!(s, "/user/item/item2/test");
|
|
|
|
let mut s = String::new();
|
|
let resource = ResourceDef::new("/user/{item1}/{item2}");
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["item", "item2"].iter()));
|
|
assert_eq!(s, "/user/item/item2");
|
|
|
|
let mut s = String::new();
|
|
let resource = ResourceDef::new("/user/{item1}/{item2}/");
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["item", "item2"].iter()));
|
|
assert_eq!(s, "/user/item/item2/");
|
|
|
|
let mut s = String::new();
|
|
assert!(!resource.resource_path_from_iter(&mut s, &mut ["item"].iter()));
|
|
|
|
let mut s = String::new();
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["item", "item2"].iter()));
|
|
assert_eq!(s, "/user/item/item2/");
|
|
assert!(!resource.resource_path_from_iter(&mut s, &mut ["item"].iter()));
|
|
|
|
let mut s = String::new();
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut vec!["item", "item2"].iter()));
|
|
assert_eq!(s, "/user/item/item2/");
|
|
}
|
|
|
|
#[test]
|
|
fn multi_pattern_build_path() {
|
|
let resource = ResourceDef::new(["/user/{id}", "/profile/{id}"]);
|
|
let mut s = String::new();
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["123"].iter()));
|
|
assert_eq!(s, "/user/123");
|
|
}
|
|
|
|
#[test]
|
|
fn multi_pattern_capture_segment_values() {
|
|
let resource = ResourceDef::new(["/user/{id}", "/profile/{id}"]);
|
|
|
|
let mut path = Path::new("/user/123");
|
|
assert!(resource.capture_match_info(&mut path));
|
|
assert!(path.get("id").is_some());
|
|
|
|
let mut path = Path::new("/profile/123");
|
|
assert!(resource.capture_match_info(&mut path));
|
|
assert!(path.get("id").is_some());
|
|
|
|
let resource = ResourceDef::new(["/user/{id}", "/profile/{uid}"]);
|
|
|
|
let mut path = Path::new("/user/123");
|
|
assert!(resource.capture_match_info(&mut path));
|
|
assert!(path.get("id").is_some());
|
|
assert!(path.get("uid").is_none());
|
|
|
|
let mut path = Path::new("/profile/123");
|
|
assert!(resource.capture_match_info(&mut path));
|
|
assert!(path.get("id").is_none());
|
|
assert!(path.get("uid").is_some());
|
|
}
|
|
|
|
#[test]
|
|
fn dynamic_prefix_proper_segmentation() {
|
|
let resource = ResourceDef::prefix(r"/id/{id:\d{3}}");
|
|
|
|
assert!(resource.is_match("/id/123"));
|
|
assert!(resource.is_match("/id/123/foo"));
|
|
assert!(!resource.is_match("/id/1234"));
|
|
assert!(!resource.is_match("/id/123a"));
|
|
|
|
assert_eq!(resource.find_match("/id/123"), Some(7));
|
|
assert_eq!(resource.find_match("/id/123/foo"), Some(7));
|
|
assert_eq!(resource.find_match("/id/1234"), None);
|
|
assert_eq!(resource.find_match("/id/123a"), None);
|
|
}
|
|
|
|
#[test]
|
|
fn build_path_map() {
|
|
let resource = ResourceDef::new("/user/{item1}/{item2}/");
|
|
|
|
let mut map = HashMap::new();
|
|
map.insert("item1", "item");
|
|
|
|
let mut s = String::new();
|
|
assert!(!resource.resource_path_from_map(&mut s, &map));
|
|
|
|
map.insert("item2", "item2");
|
|
|
|
let mut s = String::new();
|
|
assert!(resource.resource_path_from_map(&mut s, &map));
|
|
assert_eq!(s, "/user/item/item2/");
|
|
}
|
|
|
|
#[test]
|
|
fn build_path_tail() {
|
|
let resource = ResourceDef::new("/user/{item1}*");
|
|
|
|
let mut s = String::new();
|
|
assert!(!resource.resource_path_from_iter(&mut s, &mut [""; 0].iter()));
|
|
|
|
let mut s = String::new();
|
|
assert!(resource.resource_path_from_iter(&mut s, &mut ["user1"].iter()));
|
|
assert_eq!(s, "/user/user1");
|
|
|
|
let mut s = String::new();
|
|
let mut map = HashMap::new();
|
|
map.insert("item1", "item");
|
|
assert!(resource.resource_path_from_map(&mut s, &map));
|
|
assert_eq!(s, "/user/item");
|
|
}
|
|
|
|
#[test]
|
|
fn prefix_trailing_slash() {
|
|
// The prefix "/abc/" matches two segments: ["user", ""]
|
|
|
|
// These are not prefixes
|
|
let re = ResourceDef::prefix("/abc/");
|
|
assert_eq!(re.find_match("/abc/def"), None);
|
|
assert_eq!(re.find_match("/abc//def"), Some(5));
|
|
|
|
let re = ResourceDef::prefix("/{id}/");
|
|
assert_eq!(re.find_match("/abc/def"), None);
|
|
assert_eq!(re.find_match("/abc//def"), Some(5));
|
|
}
|
|
|
|
#[test]
|
|
fn join() {
|
|
// test joined defs match the same paths as each component separately
|
|
|
|
fn seq_find_match(re1: &ResourceDef, re2: &ResourceDef, path: &str) -> Option<usize> {
|
|
let len1 = re1.find_match(path)?;
|
|
let len2 = re2.find_match(&path[len1..])?;
|
|
Some(len1 + len2)
|
|
}
|
|
|
|
macro_rules! join_test {
|
|
($pat1:expr, $pat2:expr => $($test:expr),+) => {{
|
|
let pat1 = $pat1;
|
|
let pat2 = $pat2;
|
|
$({
|
|
let _path = $test;
|
|
let (re1, re2) = (ResourceDef::prefix(pat1), ResourceDef::new(pat2));
|
|
let _seq = seq_find_match(&re1, &re2, _path);
|
|
let _join = re1.join(&re2).find_match(_path);
|
|
assert_eq!(
|
|
_seq, _join,
|
|
"patterns: prefix {:?}, {:?}; mismatch on \"{}\"; seq={:?}; join={:?}",
|
|
pat1, pat2, _path, _seq, _join
|
|
);
|
|
assert!(!re1.join(&re2).is_prefix());
|
|
|
|
let (re1, re2) = (ResourceDef::prefix(pat1), ResourceDef::prefix(pat2));
|
|
let _seq = seq_find_match(&re1, &re2, _path);
|
|
let _join = re1.join(&re2).find_match(_path);
|
|
assert_eq!(
|
|
_seq, _join,
|
|
"patterns: prefix {:?}, prefix {:?}; mismatch on \"{}\"; seq={:?}; join={:?}",
|
|
pat1, pat2, _path, _seq, _join
|
|
);
|
|
assert!(re1.join(&re2).is_prefix());
|
|
})+
|
|
}}
|
|
}
|
|
|
|
join_test!("", "" => "", "/hello", "/");
|
|
join_test!("/user", "" => "", "/user", "/user/123", "/user11", "user", "user/123");
|
|
join_test!("", "/user" => "", "/user", "foo", "/user11", "user", "user/123");
|
|
join_test!("/user", "/xx" => "", "", "/", "/user", "/xx", "/userxx", "/user/xx");
|
|
|
|
join_test!(["/ver/{v}", "/v{v}"], ["/req/{req}", "/{req}"] => "/v1/abc",
|
|
"/ver/1/abc", "/v1/req/abc", "/ver/1/req/abc", "/v1/abc/def",
|
|
"/ver1/req/abc/def", "", "/", "/v1/");
|
|
}
|
|
|
|
#[test]
|
|
fn match_methods_agree() {
|
|
macro_rules! match_methods_agree {
|
|
($pat:expr => $($test:expr),+) => {{
|
|
match_methods_agree!(finish $pat, ResourceDef::new($pat), $($test),+);
|
|
}};
|
|
(prefix $pat:expr => $($test:expr),+) => {{
|
|
match_methods_agree!(finish $pat, ResourceDef::prefix($pat), $($test),+);
|
|
}};
|
|
(finish $pat:expr, $re:expr, $($test:expr),+) => {{
|
|
let re = $re;
|
|
$({
|
|
let _is = re.is_match($test);
|
|
let _find = re.find_match($test).is_some();
|
|
assert_eq!(
|
|
_is, _find,
|
|
"pattern: {:?}; mismatch on \"{}\"; is={}; find={}",
|
|
$pat, $test, _is, _find
|
|
);
|
|
})+
|
|
}}
|
|
}
|
|
|
|
match_methods_agree!("" => "", "/", "/foo");
|
|
match_methods_agree!("/" => "", "/", "/foo");
|
|
match_methods_agree!("/user" => "user", "/user", "/users", "/user/123", "/foo");
|
|
match_methods_agree!("/v{v}" => "v", "/v", "/v1", "/v222", "/foo");
|
|
match_methods_agree!(["/v{v}", "/version/{v}"] => "/v", "/v1", "/version", "/version/1", "/foo");
|
|
|
|
match_methods_agree!("/path{tail}*" => "/path", "/path1", "/path/123");
|
|
match_methods_agree!("/path/{tail}*" => "/path", "/path1", "/path/123");
|
|
|
|
match_methods_agree!(prefix "" => "", "/", "/foo");
|
|
match_methods_agree!(prefix "/user" => "user", "/user", "/users", "/user/123", "/foo");
|
|
match_methods_agree!(prefix r"/id/{id:\d{3}}" => "/id/123", "/id/1234");
|
|
match_methods_agree!(["/v{v}", "/ver/{v}"] => "", "s/v", "/v1", "/v1/xx", "/ver/i3/5", "/ver/1");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn duplicate_segment_name() {
|
|
ResourceDef::new("/user/{id}/post/{id}");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn invalid_dynamic_segment_delimiter() {
|
|
ResourceDef::new("/user/{username");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn invalid_dynamic_segment_name() {
|
|
ResourceDef::new("/user/{}");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn invalid_too_many_dynamic_segments() {
|
|
// valid
|
|
ResourceDef::new("/{a}/{b}/{c}/{d}/{e}/{f}/{g}/{h}/{i}/{j}/{k}/{l}/{m}/{n}/{o}/{p}");
|
|
|
|
// panics
|
|
ResourceDef::new(
|
|
"/{a}/{b}/{c}/{d}/{e}/{f}/{g}/{h}/{i}/{j}/{k}/{l}/{m}/{n}/{o}/{p}/{q}",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn invalid_custom_regex_for_tail() {
|
|
ResourceDef::new(r"/{tail:\d+}*");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn invalid_unnamed_tail_segment() {
|
|
ResourceDef::new("/*");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn prefix_plus_tail_match_disallowed() {
|
|
ResourceDef::prefix("/user/{id}*");
|
|
}
|
|
}
|