vendor

vendor/github.com/crewjam/errset/errset.go

@@ -0,0 +1,48 @@
+package errset
+
+// ErrSet represents a list of errors.
+//
+// Example:
+//
+//     errs := ErrSet{}
+//     for ... {
+//       if err := DoSomething(i); err != nil {
+//         errs = append(errs, err)
+//       }
+//     }
+//     return errs.ReturnValue()
+//
+type ErrSet []error
+
+// ReturnValue returns the ErrSet object if at least one non-nill error is
+// present or nil if there are no errors
+func (es ErrSet) ReturnValue() error {
+	rv := ErrSet{}
+	for _, err := range es {
+		if err != nil {
+			rv = append(rv, err)
+		}
+	}
+	if len(rv) == 0 {
+		return nil
+	}
+	return rv
+}
+
+// Error implements the error interface. It returns each error in the list
+// concatenated together with "; ".
+func (es ErrSet) Error() string {
+	rv := ""
+	errCount := 0
+	for _, err := range es {
+		if err == nil {
+			continue
+		}
+		if errCount != 0 {
+			rv += "; "
+		}
+		rv += err.Error()
+		errCount++
+	}
+	return rv
+}