refactor(parser): use constants for kernel documentation parsers

Cargo.lock

@@ -325,6 +325,7 @@ dependencies = [
 name = "systeroid-core"
 version = "0.1.0"
 dependencies = [
+ "lazy_static",
  "sysctl",
  "systeroid-parser",
  "thiserror",

systeroid-core/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 [dependencies]
 sysctl = "0.4.2"
 thiserror = "1.0.29"
+lazy_static = "1.4.0"
 
 [dependencies.systeroid-parser]
 version = "0.1.0"

systeroid-core/src/lib.rs

@@ -2,8 +2,14 @@
 
 #![warn(missing_docs, clippy::unwrap_used)]
 
-/// Linux kernel parameter handler.
+#[macro_use]
+extern crate lazy_static;
+
+/// Kernel parameter handler.
 pub mod sysctl;
 
 /// Error implementation.
 pub mod error;
+
+/// Parsers for the kernel documentation.
+pub mod parsers;

systeroid-core/src/parsers.rs

@@ -0,0 +1,22 @@
+use systeroid_parser::parser::Parser;
+use systeroid_parser::regex::RegexBuilder;
+
+lazy_static! {
+    /// Pre-defined parsers for parsing the kernel documentation.
+    pub static ref PARSERS: Vec<Parser<'static>> = vec![
+        Parser {
+            glob_path: "admin-guide/sysctl/*.rst",
+            regex: RegexBuilder::new("^\n([a-z].*)\n[=,-]{2,}+\n\n")
+                .multi_line(true)
+                .build()
+                .expect("failed to compile regex"),
+        },
+        Parser {
+            glob_path: "networking/*-sysctl.rst",
+            regex: RegexBuilder::new("^([a-zA-Z0-9_/-]+)[ ]-[ ][a-zA-Z].*$")
+                .multi_line(true)
+                .build()
+                .expect("failed to compile regex"),
+        },
+    ];
+}

systeroid-parser/src/lib.rs

@@ -2,6 +2,9 @@
 
 #![warn(missing_docs, clippy::unwrap_used)]
 
+/// Export regex crate.
+pub use regex;
+
 /// Document parser.
 pub mod parser;
 

systeroid/src/lib.rs

@@ -9,6 +9,7 @@ use crate::args::Args;
 use rayon::prelude::*;
 use std::sync::Mutex;
 use systeroid_core::error::{Error, Result};
+use systeroid_core::parsers::PARSERS;
 use systeroid_core::sysctl::Sysctl;
 use systeroid_parser::document::Document;
 use systeroid_parser::parser::Parser;
@@ -17,16 +18,9 @@ use systeroid_parser::parser::Parser;
 pub fn run(args: Args) -> Result<()> {
     let mut sysctl = Sysctl::init()?;
 
-    let parsers = vec![
-        Parser::new("admin-guide/sysctl/*.rst", "^\n([a-z].*)\n[=,-]{2,}+\n\n")?,
-        Parser::new(
-            "networking/*-sysctl.rst",
-            "^([a-zA-Z0-9_/-]+)[ ]-[ ][a-zA-Z].*$",
-        )?,
-    ];
     let documents = if let Some(kernel_docs) = args.kernel_docs {
         let documents = Mutex::new(Vec::new());
-        parsers.par_iter().try_for_each(|s| {
+        PARSERS.par_iter().try_for_each(|s| {
             let mut documents = documents
                 .lock()
                 .map_err(|e| Error::ThreadLockError(e.to_string()))?;