2 files changed, 88 insertions, 0 deletions
diff --git a/worker/lib/foldermap.go b/worker/lib/foldermap.go
new file mode 100644
index 00000000..4fd15979
--- /dev/null
+++ b/worker/lib/foldermap.go
@@ -0,0 +1,34 @@
+package lib
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/go-ini/ini"
+)
+
+func ParseFolderMap(r io.Reader) (map[string]string, []string, error) {
+	cfg, err := ini.Load(r)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	sec, err := cfg.GetSection("")
+	if err != nil {
+		return nil, nil, err
+	}
+
+	order := sec.KeyStrings()
+
+	for _, k := range order {
+		v, err := sec.GetKey(k)
+		switch {
+		case v.String() == "":
+			return nil, nil, fmt.Errorf("no value for key '%s'", k)
+		case err != nil:
+			return nil, nil, err
+		}
+	}
+
+	return sec.KeysHash(), order, nil
+}
diff --git a/worker/lib/foldermap_test.go b/worker/lib/foldermap_test.go
new file mode 100644
index 00000000..ec8b6d52
--- /dev/null
+++ b/worker/lib/foldermap_test.go
@@ -0,0 +1,54 @@
+package lib_test
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"git.sr.ht/~rjarry/aerc/worker/lib"
+)
+
+func TestFolderMap(t *testing.T) {
+	text := `#this is comment
+
+	   Sent =    [Gmail]/Sent
+
+	    # a comment between entries
+	Spam=[Gmail]/Spam # this is comment after the values
+	`
+	fmap, order, err := lib.ParseFolderMap(strings.NewReader(text))
+	if err != nil {
+		t.Errorf("parsing failed: %v", err)
+	}
+
+	want_map := map[string]string{
+		"Sent": "[Gmail]/Sent",
+		"Spam": "[Gmail]/Spam",
+	}
+	want_order := []string{"Sent", "Spam"}
+
+	if !reflect.DeepEqual(order, want_order) {
+		t.Errorf("order is not correct; want: %v, got: %v",
+			want_order, order)
+	}
+
+	if !reflect.DeepEqual(fmap, want_map) {
+		t.Errorf("map is not correct; want: %v, got: %v",
+			want_map, fmap)
+	}
+}
+
+func TestFolderMap_ExpectFails(t *testing.T) {
+	tests := []string{
+		`key = `,
+		` = value`,
+		` = `,
+		`key = #value`,
+	}
+	for _, text := range tests {
+		_, _, err := lib.ParseFolderMap(strings.NewReader(text))
+		if err == nil {
+			t.Errorf("expected to fail, but it did not: %v", text)
+		}
+	}
+}