Add drafty prototype

1 files changed, 56 insertions, 0 deletions

diff --git a/internal/ioutil/ioutil.go b/internal/ioutil/ioutil.go
new file mode 100644
index 0000000..7fe6cfc
--- /dev/null
+++ b/internal/ioutil/ioutil.go
@@ -0,0 +1,56 @@
+package ioutil
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+func CommitData(path string, data []byte) error {
+	return os.WriteFile(path, data, 0644) // FIXME: use safefile package for atomic file writes
+}
+
+func ReadData(path string) ([]byte, error) {
+	return os.ReadFile(path)
+}
+
+func CommitJSON(path string, obj any) error {
+	b, err := json.MarshalIndent(obj, "", "  ")
+	if err != nil {
+		return err
+	}
+	return CommitData(path, b)
+}
+
+func ReadJSON(path string, obj any) error {
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return fmt.Errorf("%s: %v", path, err)
+	}
+	return json.Unmarshal(b, obj)
+}
+
+func CreateDirectories(paths []string) error {
+	for _, path := range paths {
+		if err := os.Mkdir(path, 0755); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func DirectoriesExist(paths []string) error {
+	for _, path := range paths {
+		info, err := os.Stat(path)
+		if os.IsNotExist(err) {
+			return fmt.Errorf("directory does not exist: %s", path)
+		}
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			return fmt.Errorf("%s: is not a directory", path)
+		}
+	}
+	return nil
+}