mirror of
https://github.com/fafhrd91/actix-web
synced 2024-11-28 01:52:57 +01:00
438 lines
14 KiB
Rust
438 lines
14 KiB
Rust
use std::mem;
|
|
use std::rc::Rc;
|
|
use std::hash::{Hash, Hasher};
|
|
use std::collections::HashMap;
|
|
|
|
use regex::{Regex, RegexSet};
|
|
|
|
use error::UrlGenerationError;
|
|
use resource::Resource;
|
|
use httprequest::HttpRequest;
|
|
use server::ServerSettings;
|
|
|
|
|
|
/// Interface for application router.
|
|
pub struct Router(Rc<Inner>);
|
|
|
|
struct Inner {
|
|
prefix: String,
|
|
prefix_len: usize,
|
|
regset: RegexSet,
|
|
named: HashMap<String, (Pattern, bool)>,
|
|
patterns: Vec<Pattern>,
|
|
srv: ServerSettings,
|
|
}
|
|
|
|
impl Router {
|
|
/// Create new router
|
|
pub fn new<S>(prefix: &str,
|
|
settings: ServerSettings,
|
|
map: HashMap<Pattern, Option<Resource<S>>>) -> (Router, Vec<Resource<S>>)
|
|
{
|
|
let prefix = prefix.trim().trim_right_matches('/').to_owned();
|
|
let mut named = HashMap::new();
|
|
let mut patterns = Vec::new();
|
|
let mut resources = Vec::new();
|
|
let mut paths = Vec::new();
|
|
|
|
for (pattern, resource) in map {
|
|
if !pattern.name().is_empty() {
|
|
let name = pattern.name().into();
|
|
named.insert(name, (pattern.clone(), resource.is_none()));
|
|
}
|
|
|
|
if let Some(resource) = resource {
|
|
paths.push(pattern.pattern().to_owned());
|
|
patterns.push(pattern);
|
|
resources.push(resource);
|
|
}
|
|
}
|
|
|
|
let len = prefix.len();
|
|
(Router(Rc::new(
|
|
Inner{ prefix: prefix,
|
|
prefix_len: len,
|
|
regset: RegexSet::new(&paths).unwrap(),
|
|
named: named,
|
|
patterns: patterns,
|
|
srv: settings })), resources)
|
|
}
|
|
|
|
/// Router prefix
|
|
#[inline]
|
|
pub fn prefix(&self) -> &str {
|
|
&self.0.prefix
|
|
}
|
|
|
|
/// Server settings
|
|
#[inline]
|
|
pub fn server_settings(&self) -> &ServerSettings {
|
|
&self.0.srv
|
|
}
|
|
|
|
/// Query for matched resource
|
|
pub fn recognize<S>(&self, req: &mut HttpRequest<S>) -> Option<usize> {
|
|
let mut idx = None;
|
|
{
|
|
if self.0.prefix_len > req.path().len() {
|
|
return None
|
|
}
|
|
let path = &req.path()[self.0.prefix_len..];
|
|
if path.is_empty() {
|
|
if let Some(i) = self.0.regset.matches("/").into_iter().next() {
|
|
idx = Some(i);
|
|
}
|
|
} else if let Some(i) = self.0.regset.matches(path).into_iter().next() {
|
|
idx = Some(i);
|
|
}
|
|
}
|
|
|
|
if let Some(idx) = idx {
|
|
let path: &str = unsafe{ mem::transmute(&req.path()[self.0.prefix_len..]) };
|
|
self.0.patterns[idx].update_match_info(path, req);
|
|
return Some(idx)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Check if application contains matching route.
|
|
///
|
|
/// This method does not take `prefix` into account.
|
|
/// For example if prefix is `/test` and router contains route `/name`,
|
|
/// following path would be recognizable `/test/name` but `has_route()` call
|
|
/// would return `false`.
|
|
pub fn has_route(&self, path: &str) -> bool {
|
|
if path.is_empty() {
|
|
if self.0.regset.matches("/").into_iter().next().is_some() {
|
|
return true
|
|
}
|
|
} else if self.0.regset.matches(path).into_iter().next().is_some() {
|
|
return true
|
|
}
|
|
false
|
|
}
|
|
|
|
/// Build named resource path.
|
|
///
|
|
/// Check [`HttpRequest::url_for()`](../struct.HttpRequest.html#method.url_for)
|
|
/// for detailed information.
|
|
pub fn resource_path<U, I>(&self, name: &str, elements: U)
|
|
-> Result<String, UrlGenerationError>
|
|
where U: IntoIterator<Item=I>,
|
|
I: AsRef<str>,
|
|
{
|
|
if let Some(pattern) = self.0.named.get(name) {
|
|
if pattern.1 {
|
|
pattern.0.path(None, elements)
|
|
} else {
|
|
pattern.0.path(Some(&self.0.prefix), elements)
|
|
}
|
|
} else {
|
|
Err(UrlGenerationError::ResourceNotFound)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Clone for Router {
|
|
fn clone(&self) -> Router {
|
|
Router(Rc::clone(&self.0))
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Clone, PartialEq)]
|
|
enum PatternElement {
|
|
Str(String),
|
|
Var(String),
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
pub struct Pattern {
|
|
re: Regex,
|
|
name: String,
|
|
pattern: String,
|
|
names: Vec<String>,
|
|
elements: Vec<PatternElement>,
|
|
}
|
|
|
|
impl Pattern {
|
|
/// Parse path pattern and create new `Pattern` instance.
|
|
///
|
|
/// Panics if path pattern is wrong.
|
|
pub fn new(name: &str, path: &str) -> Self {
|
|
let (pattern, elements) = Pattern::parse(path);
|
|
|
|
let re = match Regex::new(&pattern) {
|
|
Ok(re) => re,
|
|
Err(err) => panic!("Wrong path pattern: \"{}\" {}", path, err)
|
|
};
|
|
let names = re.capture_names()
|
|
.filter_map(|name| name.map(|name| name.to_owned()))
|
|
.collect();
|
|
|
|
Pattern {
|
|
re: re,
|
|
name: name.into(),
|
|
pattern: pattern,
|
|
names: names,
|
|
elements: elements,
|
|
}
|
|
}
|
|
|
|
/// Returns name of the pattern
|
|
pub fn name(&self) -> &str {
|
|
&self.name
|
|
}
|
|
|
|
/// Returns path of the pattern
|
|
pub fn pattern(&self) -> &str {
|
|
&self.pattern
|
|
}
|
|
|
|
/// Extract pattern parameters from the text
|
|
pub fn update_match_info<S>(&self, text: &str, req: &mut HttpRequest<S>) {
|
|
if !self.names.is_empty() {
|
|
if let Some(captures) = self.re.captures(text) {
|
|
let mut idx = 0;
|
|
for capture in captures.iter() {
|
|
if let Some(ref m) = capture {
|
|
if idx != 0 {
|
|
req.match_info_mut().add(
|
|
self.names[idx-1].as_str(), m.as_str());
|
|
}
|
|
idx += 1;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
/// Build pattern path.
|
|
pub fn path<U, I>(&self, prefix: Option<&str>, elements: U) -> Result<String, UrlGenerationError>
|
|
where U: IntoIterator<Item=I>,
|
|
I: AsRef<str>,
|
|
{
|
|
let mut iter = elements.into_iter();
|
|
let mut path = if let Some(prefix) = prefix {
|
|
format!("{}/", prefix)
|
|
} else {
|
|
String::new()
|
|
};
|
|
println!("TEST: {:?} {:?}", path, prefix);
|
|
for el in &self.elements {
|
|
match *el {
|
|
PatternElement::Str(ref s) => path.push_str(s),
|
|
PatternElement::Var(_) => {
|
|
if let Some(val) = iter.next() {
|
|
path.push_str(val.as_ref())
|
|
} else {
|
|
return Err(UrlGenerationError::NotEnoughElements)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Ok(path)
|
|
}
|
|
|
|
fn parse(pattern: &str) -> (String, Vec<PatternElement>) {
|
|
const DEFAULT_PATTERN: &str = "[^/]+";
|
|
|
|
let mut re = String::from("^/");
|
|
let mut el = String::new();
|
|
let mut in_param = false;
|
|
let mut in_param_pattern = false;
|
|
let mut param_name = String::new();
|
|
let mut param_pattern = String::from(DEFAULT_PATTERN);
|
|
let mut elems = Vec::new();
|
|
|
|
for (index, ch) in pattern.chars().enumerate() {
|
|
// All routes must have a leading slash so its optional to have one
|
|
if index == 0 && ch == '/' {
|
|
continue;
|
|
}
|
|
|
|
if in_param {
|
|
// In parameter segment: `{....}`
|
|
if ch == '}' {
|
|
elems.push(PatternElement::Var(param_name.clone()));
|
|
re.push_str(&format!(r"(?P<{}>{})", ¶m_name, ¶m_pattern));
|
|
|
|
param_name.clear();
|
|
param_pattern = String::from(DEFAULT_PATTERN);
|
|
|
|
in_param_pattern = false;
|
|
in_param = false;
|
|
} else if ch == ':' {
|
|
// The parameter name has been determined; custom pattern land
|
|
in_param_pattern = true;
|
|
param_pattern.clear();
|
|
} else if in_param_pattern {
|
|
// Ignore leading whitespace for pattern
|
|
if !(ch == ' ' && param_pattern.is_empty()) {
|
|
param_pattern.push(ch);
|
|
}
|
|
} else {
|
|
param_name.push(ch);
|
|
}
|
|
} else if ch == '{' {
|
|
in_param = true;
|
|
elems.push(PatternElement::Str(el.clone()));
|
|
el.clear();
|
|
} else {
|
|
re.push(ch);
|
|
el.push(ch);
|
|
}
|
|
}
|
|
|
|
re.push('$');
|
|
(re, elems)
|
|
}
|
|
}
|
|
|
|
impl PartialEq for Pattern {
|
|
fn eq(&self, other: &Pattern) -> bool {
|
|
self.pattern == other.pattern
|
|
}
|
|
}
|
|
|
|
impl Eq for Pattern {}
|
|
|
|
impl Hash for Pattern {
|
|
fn hash<H: Hasher>(&self, state: &mut H) {
|
|
self.pattern.hash(state);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use regex::Regex;
|
|
use test::TestRequest;
|
|
|
|
#[test]
|
|
fn test_recognizer() {
|
|
let mut routes = HashMap::new();
|
|
routes.insert(Pattern::new("", "/name"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "/name/{val}"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "/name/{val}/index.html"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "/v{val}/{val2}/index.html"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "/v/{tail:.*}"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "{test}/index.html"), Some(Resource::default()));
|
|
let (rec, _) = Router::new::<()>("", ServerSettings::default(), routes);
|
|
|
|
let mut req = TestRequest::with_uri("/name").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert!(req.match_info().is_empty());
|
|
|
|
let mut req = TestRequest::with_uri("/name/value").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert_eq!(req.match_info().get("val").unwrap(), "value");
|
|
assert_eq!(&req.match_info()["val"], "value");
|
|
|
|
let mut req = TestRequest::with_uri("/name/value2/index.html").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert_eq!(req.match_info().get("val").unwrap(), "value2");
|
|
|
|
let mut req = TestRequest::with_uri("/vtest/ttt/index.html").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert_eq!(req.match_info().get("val").unwrap(), "test");
|
|
assert_eq!(req.match_info().get("val2").unwrap(), "ttt");
|
|
|
|
let mut req = TestRequest::with_uri("/v/blah-blah/index.html").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert_eq!(req.match_info().get("tail").unwrap(), "blah-blah/index.html");
|
|
|
|
let mut req = TestRequest::with_uri("/bbb/index.html").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert_eq!(req.match_info().get("test").unwrap(), "bbb");
|
|
}
|
|
|
|
#[test]
|
|
fn test_recognizer_with_prefix() {
|
|
let mut routes = HashMap::new();
|
|
routes.insert(Pattern::new("", "/name"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "/name/{val}"), Some(Resource::default()));
|
|
let (rec, _) = Router::new::<()>("/test", ServerSettings::default(), routes);
|
|
|
|
let mut req = TestRequest::with_uri("/name").finish();
|
|
assert!(rec.recognize(&mut req).is_none());
|
|
|
|
let mut req = TestRequest::with_uri("/test/name").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
|
|
let mut req = TestRequest::with_uri("/test/name/value").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
assert_eq!(req.match_info().get("val").unwrap(), "value");
|
|
assert_eq!(&req.match_info()["val"], "value");
|
|
|
|
// same patterns
|
|
let mut routes = HashMap::new();
|
|
routes.insert(Pattern::new("", "/name"), Some(Resource::default()));
|
|
routes.insert(Pattern::new("", "/name/{val}"), Some(Resource::default()));
|
|
let (rec, _) = Router::new::<()>("/test2", ServerSettings::default(), routes);
|
|
|
|
let mut req = TestRequest::with_uri("/name").finish();
|
|
assert!(rec.recognize(&mut req).is_none());
|
|
let mut req = TestRequest::with_uri("/test2/name").finish();
|
|
assert!(rec.recognize(&mut req).is_some());
|
|
}
|
|
|
|
fn assert_parse(pattern: &str, expected_re: &str) -> Regex {
|
|
let (re_str, _) = Pattern::parse(pattern);
|
|
assert_eq!(&*re_str, expected_re);
|
|
Regex::new(&re_str).unwrap()
|
|
}
|
|
|
|
#[test]
|
|
fn test_parse_static() {
|
|
let re = assert_parse("/", r"^/$");
|
|
assert!(re.is_match("/"));
|
|
assert!(!re.is_match("/a"));
|
|
|
|
let re = assert_parse("/name", r"^/name$");
|
|
assert!(re.is_match("/name"));
|
|
assert!(!re.is_match("/name1"));
|
|
assert!(!re.is_match("/name/"));
|
|
assert!(!re.is_match("/name~"));
|
|
|
|
let re = assert_parse("/name/", r"^/name/$");
|
|
assert!(re.is_match("/name/"));
|
|
assert!(!re.is_match("/name"));
|
|
assert!(!re.is_match("/name/gs"));
|
|
|
|
let re = assert_parse("/user/profile", r"^/user/profile$");
|
|
assert!(re.is_match("/user/profile"));
|
|
assert!(!re.is_match("/user/profile/profile"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_parse_param() {
|
|
let re = assert_parse("/user/{id}", r"^/user/(?P<id>[^/]+)$");
|
|
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 captures = re.captures("/user/profile").unwrap();
|
|
assert_eq!(captures.get(1).unwrap().as_str(), "profile");
|
|
assert_eq!(captures.name("id").unwrap().as_str(), "profile");
|
|
|
|
let captures = re.captures("/user/1245125").unwrap();
|
|
assert_eq!(captures.get(1).unwrap().as_str(), "1245125");
|
|
assert_eq!(captures.name("id").unwrap().as_str(), "1245125");
|
|
|
|
let re = assert_parse(
|
|
"/v{version}/resource/{id}",
|
|
r"^/v(?P<version>[^/]+)/resource/(?P<id>[^/]+)$",
|
|
);
|
|
assert!(re.is_match("/v1/resource/320120"));
|
|
assert!(!re.is_match("/v/resource/1"));
|
|
assert!(!re.is_match("/resource"));
|
|
|
|
let captures = re.captures("/v151/resource/adahg32").unwrap();
|
|
assert_eq!(captures.get(1).unwrap().as_str(), "151");
|
|
assert_eq!(captures.name("version").unwrap().as_str(), "151");
|
|
assert_eq!(captures.name("id").unwrap().as_str(), "adahg32");
|
|
}
|
|
}
|