fix!: Add a builder API to Metadata

src/lib.rs

@@ -55,28 +55,50 @@ use std::path::{Path, PathBuf};
 /// A convenient metadata struct that describes a crate
 ///
 /// See [`metadata!`]
-#[allow(clippy::exhaustive_structs)]
 pub struct Metadata {
-    /// The crate version
-    pub version: Cow<'static, str>,
-    /// The crate name
-    pub name: Cow<'static, str>,
+    name: Cow<'static, str>,
+    version: Cow<'static, str>,
+    authors: Option<Cow<'static, str>>,
+    homepage: Option<Cow<'static, str>>,
+}
+
+impl Metadata {
+    /// See [`metadata!`]
+    pub fn new(name: impl Into<Cow<'static, str>>, version: impl Into<Cow<'static, str>>) -> Self {
+        Self {
+            name: name.into(),
+            version: version.into(),
+            authors: None,
+            homepage: None,
+        }
+    }
+
     /// The list of authors of the crate
-    pub authors: Cow<'static, str>,
+    pub fn authors(mut self, value: impl Into<Cow<'static, str>>) -> Self {
+        let value = value.into();
+        if !value.is_empty() {
+            self.authors = value.into();
+        }
+        self
+    }
+
     /// The URL of the crate's website
-    pub homepage: Cow<'static, str>,
+    pub fn homepage(mut self, value: impl Into<Cow<'static, str>>) -> Self {
+        let value = value.into();
+        if !value.is_empty() {
+            self.homepage = value.into();
+        }
+        self
+    }
 }
 
 /// Initialize [`Metadata`]
 #[macro_export]
 macro_rules! metadata {
     () => {{
-        $crate::Metadata {
-            version: env!("CARGO_PKG_VERSION").into(),
-            name: env!("CARGO_PKG_NAME").into(),
-            authors: env!("CARGO_PKG_AUTHORS").replace(":", ", ").into(),
-            homepage: env!("CARGO_PKG_HOMEPAGE").into(),
-        }
+        $crate::Metadata::new(env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"))
+            .authors(env!("CARGO_PKG_AUTHORS").replace(":", ", "))
+            .homepage(env!("CARGO_PKG_HOMEPAGE"))
     }};
 }
 
@@ -96,12 +118,10 @@ macro_rules! metadata {
 /// use human_panic::setup_panic;
 /// use human_panic::Metadata;
 ///
-/// setup_panic!(Metadata {
-///     name: env!("CARGO_PKG_NAME").into(),
-///     version: env!("CARGO_PKG_VERSION").into(),
-///     authors: "My Company Support <[email protected]>".into(),
-///     homepage: "support.mycompany.com".into(),
-/// });
+/// setup_panic!(Metadata::new(env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"))
+///     .authors("My Company Support <[email protected]>")
+///     .homepage("support.mycompany.com")
+/// );
 /// ```
 #[macro_export]
 macro_rules! setup_panic {
@@ -207,10 +227,10 @@ fn write_msg<P: AsRef<Path>>(
         name
     )?;
 
-    if !homepage.is_empty() {
+    if let Some(homepage) = homepage {
         writeln!(buffer, "- Homepage: {homepage}")?;
     }
-    if !authors.is_empty() {
+    if let Some(authors) = authors {
         writeln!(buffer, "- Authors: {authors}")?;
     }
     writeln!(

tests/custom-panic/src/main.rs

@@ -1,13 +1,10 @@
+use human_panic::metadata;
 use human_panic::setup_panic;
-use human_panic::Metadata;
 
 fn main() {
-    setup_panic!(Metadata {
-        name: env!("CARGO_PKG_NAME").into(),
-        version: env!("CARGO_PKG_VERSION").into(),
-        authors: "My Company Support <[email protected]".into(),
-        homepage: "support.mycompany.com".into(),
-    });
+    setup_panic!(metadata!()
+        .authors("My Company Support <[email protected]")
+        .homepage("support.mycompany.com"));
 
     println!("A normal log message");
     panic!("OMG EVERYTHING IS ON FIRE!!!");

tests/custom-panic/tests/integration.rs

@@ -26,7 +26,7 @@ fn debug() {
     snapbox::cmd::Command::new(snapbox::cmd::cargo_bin!("custom-panic-test"))
         .assert()
         .stderr_matches(snapbox::str![[r#"
-            thread 'main' panicked at tests/custom-panic/src/main.rs:13:5:
+            thread 'main' panicked at tests/custom-panic/src/main.rs:10:5:
             OMG EVERYTHING IS ON FIRE!!!
             note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
         "#]])