From 3850a83d459a3816588be120727445a88e11ff60 Mon Sep 17 00:00:00 2001
From: louib <code@louib.net>
Date: Tue, 22 Aug 2023 21:09:07 -0400
Subject: [PATCH] feat: add license support

---
 src/cyclone_dx.rs | 32 +++++++++++++++++++++++++++++++-
 src/nix.rs        | 11 +++++++++--
 2 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/src/cyclone_dx.rs b/src/cyclone_dx.rs
index 78e6b90..91a8458 100644
--- a/src/cyclone_dx.rs
+++ b/src/cyclone_dx.rs
@@ -5,7 +5,8 @@ use serde::{de::Deserialize, ser::Serialize};
 
 use serde_cyclonedx::cyclonedx::v_1_4::{
     Commit, CommitBuilder, Component, ComponentBuilder, ComponentPedigree, ComponentPedigreeBuilder,
-    CycloneDxBuilder, ExternalReference, ExternalReferenceBuilder, Metadata, ToolBuilder,
+    CycloneDxBuilder, ExternalReference, ExternalReferenceBuilder, License, LicenseBuilder, LicenseChoice,
+    Metadata, ToolBuilder,
 };
 
 const CURRENT_SPEC_VERSION: &str = "1.4";
@@ -118,5 +119,34 @@ pub fn dump_derivation(derivation_path: &str, package_node: &crate::nix::Package
         );
     }
 
+    let mut licenses: Vec<LicenseChoice> = vec![];
+    for license in &package_node.package.meta.get_licenses() {
+        match license {
+            crate::nix::PackageLicense::Name(n) => {
+                licenses.push(LicenseChoice {
+                    expression: Some(n.to_string()),
+                    license: None,
+                });
+            }
+            crate::nix::PackageLicense::Details(license_details) => {
+                let mut license_builder = LicenseBuilder::default();
+                match &license_details.spdx_id {
+                    None => continue,
+                    Some(id) => license_builder.id(id),
+                };
+                if let Some(full_name) = &license_details.full_name {
+                    license_builder.name(full_name);
+                }
+                licenses.push(LicenseChoice {
+                    expression: None,
+                    license: Some(license_builder.build().unwrap()),
+                });
+            }
+        }
+    }
+    if licenses.len() != 0 {
+        component_builder.licenses(licenses);
+    }
+
     Some(component_builder.build().unwrap())
 }
diff --git a/src/nix.rs b/src/nix.rs
index b8a4799..8d92cf6 100644
--- a/src/nix.rs
+++ b/src/nix.rs
@@ -251,8 +251,14 @@ pub struct PackageMeta {
     pub license: Option<License>,
 }
 impl PackageMeta {
-    pub fn get_licenses(&self) -> Vec<LicenseDetails> {
-        vec![]
+    pub fn get_licenses(&self) -> Vec<PackageLicense> {
+        match &self.license {
+            Some(h) => match h {
+                License::One(license) => vec![license.clone()],
+                License::Many(licenses) => licenses.clone(),
+            },
+            None => vec![],
+        }
     }
     pub fn get_homepages(&self) -> Vec<String> {
         match &self.homepage {
@@ -316,6 +322,7 @@ pub enum PackageLicense {
 }
 
 #[derive(Debug)]
+#[derive(Default)]
 #[derive(Clone)]
 #[derive(Deserialize)]
 pub struct LicenseDetails {