chore: clippy lint -Dwarnings

nginx-sys/src/lib.rs

@@ -24,10 +24,8 @@
 //! ```rust,no_run
 //! use nginx_sys::nginx_version;
 //!
-//! fn main() {
-//!     let version = unsafe { nginx_version() };
-//!     println!("Nginx version: {}", version);
-//! }
+//! let version = unsafe { nginx_version() };
+//! println!("Nginx version: {}", version);
 //! ```
 //!
 #![warn(missing_docs)]
@@ -45,7 +43,7 @@ mod bindings {
     #![allow(dead_code)]
     #![allow(clippy::all)]
     #![allow(improper_ctypes)]
-    #[allow(rustdoc::broken_intra_doc_links)]
+    #![allow(rustdoc::broken_intra_doc_links)]
     include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 }
 #[doc(no_inline)]
@@ -89,19 +87,11 @@ impl ngx_str_t {
     /// A string slice (`&str`) representing the nginx string.
     pub fn to_str(&self) -> &str {
         unsafe {
-            let slice = slice::from_raw_parts(self.data, self.len as usize);
+            let slice = slice::from_raw_parts(self.data, self.len);
             return std::str::from_utf8(slice).unwrap();
         }
     }
 
-    /// Convert the nginx string to a `String` by copying its contents.
-    ///
-    /// # Returns
-    /// A new `String` containing the contents of the nginx string.
-    pub fn to_string(&self) -> String {
-        return String::from(self.to_str());
-    }
-
     /// Create an `ngx_str_t` instance from a `String`.
     ///
     /// # Arguments
@@ -140,7 +130,7 @@ impl From<ngx_str_t> for &[u8] {
         if s.len == 0 || s.data.is_null() {
             return Default::default();
         }
-        unsafe { slice::from_raw_parts(s.data, s.len as usize) }
+        unsafe { slice::from_raw_parts(s.data, s.len) }
     }
 }
 

src/core/status.rs

@@ -1,10 +1,14 @@
 use crate::ffi::*;
 use std::fmt;
 
+/// Status
+///
+/// Rust native wrapper for NGINX status codes.
 #[derive(Ord, PartialOrd, Eq, PartialEq)]
 pub struct Status(pub ngx_int_t);
 
 impl Status {
+    /// Is this Status equivalent to NGX_OK?
     pub fn is_ok(&self) -> bool {
         self == &Status::NGX_OK
     }
@@ -40,13 +44,23 @@ macro_rules! ngx_codes {
 }
 
 ngx_codes! {
+    /// NGX_OK - Operation succeeded.
     (NGX_OK);
+    /// NGX_ERROR - Operation failed.
     (NGX_ERROR);
+    /// NGX_AGAIN - Operation incomplete; call the function again.
     (NGX_AGAIN);
+    /// NGX_BUSY - Resource is not available.
     (NGX_BUSY);
+    /// NGX_DONE - Operation complete or continued elsewhere. Also used as an alternative success code.
     (NGX_DONE);
+    /// NGX_DECLINED - Operation rejected, for example, because it is disabled in the configuration.
+    /// This is never an error.
     (NGX_DECLINED);
+    /// NGX_ABORT - Function was aborted. Also used as an alternative error code.
     (NGX_ABORT);
 }
+
+/// NGX_CONF_ERROR - An error occurred while parsing and validating configuration.
 pub const NGX_CONF_ERROR: *const () = -1isize as *const ();
 // pub const CONF_OK: Status = Status(NGX_CONF_OK as ngx_int_t);

src/http/module.rs

@@ -5,6 +5,7 @@ use crate::ffi::*;
 use core::ptr;
 use std::os::raw::{c_char, c_void};
 
+/// MergeConfigError - configuration cannot be merged with levels above.
 #[derive(Debug)]
 pub enum MergeConfigError {
     /// No value provided for configuration argument
@@ -21,7 +22,15 @@ impl std::fmt::Display for MergeConfigError {
     }
 }
 
+/// The `Merge` trait provides a method for merging configuration down through each level.
+///
+/// A module configuration should implement this trait for setting its configuration throughout
+/// each level.
 pub trait Merge {
+    /// Module merge function.
+    ///
+    /// # Returns
+    /// Result, Ok on success or MergeConfigError on failure.
     fn merge(&mut self, prev: &Self) -> Result<(), MergeConfigError>;
 }
 
@@ -31,9 +40,18 @@ impl Merge for () {
     }
 }
 
+/// The `HTTPModule` trait provides the NGINX configuration stage interface.
+///
+/// These functions allocate structures, initialize them, and merge through the configuration
+/// layers.
+///
+/// See https://nginx.org/en/docs/dev/development_guide.html#adding_new_modules for details.
 pub trait HTTPModule {
+    /// Configuration in the `http` block.
     type MainConf: Merge + Default;
+    /// Configuration in a `server` block within the `http` block.
     type SrvConf: Merge + Default;
+    /// Configuration in a `location` block within the `http` block.
     type LocConf: Merge + Default;
 
     /// # Safety

src/http/request.rs

@@ -149,6 +149,9 @@ impl Request {
         Some(co)
     }
 
+    /// Sets the value as the module's context.
+    ///
+    /// See https://nginx.org/en/docs/dev/development_guide.html#http_request
     pub fn set_module_ctx(&self, value: *mut c_void, module: &ngx_module_t) {
         unsafe {
             *self.0.ctx.add(module.ctx_index) = value;
@@ -191,11 +194,17 @@ impl Request {
         self.0.headers_out.status = status.into();
     }
 
+    /// Add header to the `headers_in` object.
+    ///
+    /// See https://nginx.org/en/docs/dev/development_guide.html#http_request
     pub fn add_header_in(&mut self, key: &str, value: &str) -> Option<()> {
         let table: *mut ngx_table_elt_t = unsafe { ngx_list_push(&mut self.0.headers_in.headers) as _ };
         add_to_ngx_table(table, self.0.pool, key, value)
     }
 
+    /// Add header to the `headers_out` object.
+    ///
+    /// See https://nginx.org/en/docs/dev/development_guide.html#http_request
     pub fn add_header_out(&mut self, key: &str, value: &str) -> Option<()> {
         let table: *mut ngx_table_elt_t = unsafe { ngx_list_push(&mut self.0.headers_out.headers) as _ };
         add_to_ngx_table(table, self.0.pool, key, value)
@@ -340,6 +349,9 @@ impl fmt::Debug for Request {
     }
 }
 
+/// Iterator for `ngx_list_t` types.
+///
+/// Implementes the std::iter::Iterator trait.
 pub struct NgxListIterator {
     done: bool,
     part: *const ngx_list_part_t,
@@ -459,6 +471,7 @@ impl Method {
     /// CONNECT
     pub const CONNECT: Method = Method(MethodInner::Connect);
 
+    /// Convert a Method to a &str.
     #[inline]
     pub fn as_str(&self) -> &str {
         match self.0 {

src/http/status.rs

@@ -49,6 +49,7 @@ impl fmt::Debug for HTTPStatus {
 }
 
 impl HTTPStatus {
+    /// Convets a u16 to a status code.
     #[inline]
     pub fn from_u16(src: u16) -> Result<HTTPStatus, InvalidHTTPStatusCode> {
         if !(100..600).contains(&src) {
@@ -58,7 +59,7 @@ impl HTTPStatus {
         Ok(HTTPStatus(src.into()))
     }
 
-    /// Converts a &[u8] to a status code
+    /// Converts a &[u8] to a status code.
     pub fn from_bytes(src: &[u8]) -> Result<HTTPStatus, InvalidHTTPStatusCode> {
         if src.len() != 3 {
             return Err(InvalidHTTPStatusCode::new());

src/lib.rs

@@ -33,9 +33,27 @@
 //! ```
 
 #![warn(missing_docs)]
+/// The core module.
+///
+/// This module provides fundamental utilities needed to interface with many NGINX primitives.
+/// String conversions, the pool (memory interface) object, and buffer APIs are covered here. These
+/// utilities will generally align with the NGINX 'core' files and APIs.
 pub mod core;
+
+/// The ffi module.
+///
+/// This module provides scoped FFI bindings for NGINX symbols.
 pub mod ffi;
+
+/// The http module.
+///
+/// This modules provides wrappers and utilities to NGINX http APIs, such as requests,
+/// configuration access, and statuses.
 pub mod http;
+
+/// The log module.
+///
+/// This module provides an interface into the NGINX logger framework.
 pub mod log;
 
 /// Define modules exported by this library.

tests/log_test.rs

@@ -65,7 +65,7 @@ impl Nginx {
     // make sure we stop existing nginx and start new master process
     // intentinally ignore failure in stop
     pub fn restart(&mut self) -> Result<Output> {
-        self.stop();
+        let _ = self.stop();
         self.start()
     }