feat: add utils packages in ext (#8766)

Signed-off-by: Charles-Edouard Brétéché <charles.edouard@nirmata.com>

ext/file-info/ext.go

@@ -0,0 +1,28 @@
+package fileinfo
+
+import (
+	"io/fs"
+
+	"github.com/kyverno/kyverno/ext/file"
+)
+
+func IsYaml(info fs.FileInfo) bool {
+	if info.IsDir() {
+		return false
+	}
+	return file.IsYaml(info.Name())
+}
+
+func IsJson(info fs.FileInfo) bool {
+	if info.IsDir() {
+		return false
+	}
+	return file.IsJson(info.Name())
+}
+
+func IsYamlOrJson(info fs.FileInfo) bool {
+	if info.IsDir() {
+		return false
+	}
+	return file.IsYamlOrJson(info.Name())
+}

ext/file/ext.go

@@ -0,0 +1,19 @@
+package file
+
+import (
+	"path/filepath"
+)
+
+func IsYaml(path string) bool {
+	ext := filepath.Ext(path)
+	return ext == ".yml" || ext == ".yaml"
+}
+
+func IsJson(path string) bool {
+	ext := filepath.Ext(path)
+	return ext == ".json"
+}
+
+func IsYamlOrJson(path string) bool {
+	return IsYaml(path) || IsJson(path)
+}

ext/file/ext_test.go

@@ -0,0 +1,110 @@
+package file
+
+import (
+	"testing"
+)
+
+func TestIsYaml(t *testing.T) {
+	tests := []struct {
+		name string
+		path string
+		want bool
+	}{{
+		name: "empty",
+		path: "",
+		want: false,
+	}, {
+		name: "yaml",
+		path: "something.yaml",
+		want: true,
+	}, {
+		name: "yml",
+		path: "something.yml",
+		want: true,
+	}, {
+		name: "json",
+		path: "something.json",
+		want: false,
+	}, {
+		name: "pdf",
+		path: "something.pdf",
+		want: false,
+	}}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := IsYaml(tt.path); got != tt.want {
+				t.Errorf("IsYaml() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestIsJson(t *testing.T) {
+	tests := []struct {
+		name string
+		path string
+		want bool
+	}{{
+		name: "empty",
+		path: "",
+		want: false,
+	}, {
+		name: "yaml",
+		path: "something.yaml",
+		want: false,
+	}, {
+		name: "yml",
+		path: "something.yml",
+		want: false,
+	}, {
+		name: "json",
+		path: "something.json",
+		want: true,
+	}, {
+		name: "pdf",
+		path: "something.pdf",
+		want: false,
+	}}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := IsJson(tt.path); got != tt.want {
+				t.Errorf("IsJson() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestIsYamlOrJson(t *testing.T) {
+	tests := []struct {
+		name string
+		path string
+		want bool
+	}{{
+		name: "empty",
+		path: "",
+		want: false,
+	}, {
+		name: "yaml",
+		path: "something.yaml",
+		want: true,
+	}, {
+		name: "yml",
+		path: "something.yml",
+		want: true,
+	}, {
+		name: "json",
+		path: "something.json",
+		want: true,
+	}, {
+		name: "pdf",
+		path: "something.pdf",
+		want: false,
+	}}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := IsYamlOrJson(tt.path); got != tt.want {
+				t.Errorf("IsYamlOrJson() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}