From d5453cc46cd302f57db956ba2aa078294cfcf5ec Mon Sep 17 00:00:00 2001
From: Ed Page <eopage@gmail.com>
Date: Thu, 25 Jul 2024 13:44:27 -0500
Subject: [PATCH] feat(config): Load config from Cargo.toml

Fixes #1060
---
 crates/typos-cli/src/config.rs | 50 ++++++++++++++++++++++++++++++++--
 1 file changed, 47 insertions(+), 3 deletions(-)

diff --git a/crates/typos-cli/src/config.rs b/crates/typos-cli/src/config.rs
index 577b990..34a1994 100644
--- a/crates/typos-cli/src/config.rs
+++ b/crates/typos-cli/src/config.rs
@@ -4,9 +4,15 @@ use kstring::KString;
 
 use crate::file_type_specifics;
 
-pub const SUPPORTED_FILE_NAMES: &[&str] =
-    &["typos.toml", "_typos.toml", ".typos.toml", PYPROJECT_TOML];
+pub const SUPPORTED_FILE_NAMES: &[&str] = &[
+    "typos.toml",
+    "_typos.toml",
+    ".typos.toml",
+    CARGO_TOML,
+    PYPROJECT_TOML,
+];
 
+const CARGO_TOML: &str = "Cargo.toml";
 const PYPROJECT_TOML: &str = "pyproject.toml";
 
 #[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
@@ -22,6 +28,28 @@ pub struct Config {
     pub overrides: EngineConfig,
 }
 
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
+#[serde(default)]
+#[serde(rename_all = "kebab-case")]
+pub struct CargoTomlConfig {
+    pub workspace: Option<CargoTomlPackage>,
+    pub package: Option<CargoTomlPackage>,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
+#[serde(default)]
+#[serde(rename_all = "kebab-case")]
+pub struct CargoTomlPackage {
+    pub metadata: CargoTomlMetadata,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
+#[serde(default)]
+#[serde(rename_all = "kebab-case")]
+pub struct CargoTomlMetadata {
+    pub typos: Option<Config>,
+}
+
 #[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(default)]
 #[serde(rename_all = "kebab-case")]
@@ -57,7 +85,23 @@ impl Config {
             )
         })?;
 
-        if path.file_name().unwrap() == PYPROJECT_TOML {
+        if path.file_name().unwrap() == CARGO_TOML {
+            let config = toml::from_str::<CargoTomlConfig>(&s)?;
+            let typos = config
+                .workspace
+                .and_then(|w| w.metadata.typos)
+                .or(config.package.and_then(|p| p.metadata.typos));
+
+            if let Some(typos) = typos {
+                Ok(Some(typos))
+            } else {
+                log::debug!(
+                    "No `package.metadata.typos` section found in `{CARGO_TOML}`, skipping"
+                );
+
+                Ok(None)
+            }
+        } else if path.file_name().unwrap() == PYPROJECT_TOML {
             let config = toml::from_str::<PyprojectTomlConfig>(&s)?;
 
             if let Some(typos) = config.tool.typos {