snapshot of https://github.com/cortezaproject/corteza.git (2024.9.x, 2026-09-18; blobs > 131072B omitted)

server/pkg/errors/meta.go

@@ -0,0 +1,86 @@
+package errors
+
+import (
+	"encoding/json"
+	"fmt"
+	"sort"
+
+	"github.com/spf13/cast"
+)
+
+type (
+	meta map[interface{}]interface{}
+)
+
+// StringKeys returns max length of (string) keys and slice of all strings
+func (m meta) StringKeys() (int, []string) {
+	var (
+		l, ml int
+		key   string
+		kk    = make([]string, 0, len(m))
+	)
+
+	// collecting keys so that we can sort them to ensure
+	// stable order and find out max length of the key
+	for k := range m {
+		switch c := k.(type) {
+		case string:
+			key = c
+		case fmt.Stringer:
+			key = c.String()
+		default:
+			continue
+		}
+
+		kk = append(kk, key)
+		if l = len(key); l > ml {
+			ml = l
+		}
+	}
+
+	sort.Strings(kk)
+	return ml, kk
+}
+
+func (m meta) AsString(key interface{}) string {
+	if _, has := m[key]; has {
+		if s, ok := m[key].(string); ok {
+			return s
+		}
+	}
+
+	return ""
+}
+
+func (m meta) AsInt(key interface{}) int {
+	if _, has := m[key]; has {
+		if s, ok := m[key].(int); ok {
+			return s
+		}
+	}
+
+	return 0
+}
+
+func (m meta) MarshalJSON() ([]byte, error) {
+	o := make(map[string]interface{})
+	_, kk := m.StringKeys()
+	for _, k := range kk {
+		o[k] = m[k]
+	}
+
+	return json.Marshal(o)
+}
+
+// returns string pairs (both key & value are strings=
+func (m meta) pairs() []string {
+	out := make([]string, 0, len(m)*2)
+
+	for k := range m {
+		if key, ok := k.(string); ok {
+			out = append(out, key, cast.ToString(m[k]))
+		}
+	}
+
+	return out
+}