Add Fossil lib

Signed-off-by: Nicolas Paul <n@nc0.fr>

3 files changed, 43 insertions, 0 deletions

diff --git a/pkg/config/lib/fossil/fossil.go b/pkg/config/lib/fossil/fossil.go
new file mode 100644
index 0000000..bf49882
--- /dev/null
+++ b/pkg/config/lib/fossil/fossil.go
@@ -0,0 +1,32 @@
+package fossil
+
+import (
+	_ "embed"
+	"go.nc0.fr/svgu/pkg/config"
+	"go.starlark.net/starlark"
+	"go.starlark.net/starlarkstruct"
+	"sync"
+)
+
+var (
+	once   = sync.Once{}
+	fossil = starlark.StringDict{}
+	//go:embed fossil.star
+	fossilFile string
+	fossilErr  error
+)
+
+// LoadFossilModule loads the Fossil module.
+func LoadFossilModule(t *starlark.Thread) (starlark.StringDict, error) {
+	once.Do(func() {
+		env := starlark.StringDict{
+			"module": starlark.NewBuiltin("module",
+				config.InternModule),
+			"make_module": starlark.NewBuiltin("mod",
+				starlarkstruct.MakeModule),
+		}
+		fossil, fossilErr = starlark.ExecFile(t, "fossil.star", fossilFile, env)
+	})
+
+	return fossil, fossilErr
+}
diff --git a/pkg/config/lib/fossil/fossil.star b/pkg/config/lib/fossil/fossil.star
new file mode 100644
index 0000000..d7eae85
--- /dev/null
+++ b/pkg/config/lib/fossil/fossil.star
@@ -0,0 +1,8 @@
+# Utilities to index Go modules hosted on Fossil repositories.
+
+_FOSSIL = "fossil"
+
+fossil = make_module(
+    "fossil",
+    FOSSIL = _FOSSIL,
+)
diff --git a/pkg/config/starlark.go b/pkg/config/starlark.go
index abe6091..c58a800 100644
--- a/pkg/config/starlark.go
+++ b/pkg/config/starlark.go
@@ -2,6 +2,7 @@ package config
 
 import (
 	"fmt"
+	"go.nc0.fr/svgu/pkg/config/lib/fossil"
 	"go.nc0.fr/svgu/pkg/config/lib/git"
 	"go.nc0.fr/svgu/pkg/config/lib/hg"
 	"go.nc0.fr/svgu/pkg/config/lib/svn"
@@ -44,6 +45,8 @@ func load(t *starlark.Thread, module string) (starlark.StringDict, error) {
 		return hg.LoadHgModule(t)
 	case "svn.star": // subversion
 		return svn.LoadSvnModule(t)
+	case "fossil.star": // fossil
+		return fossil.LoadFossilModule(t)
 	default:
 		return nil, fmt.Errorf("unknown module %q", module)
 	}