fix: error handling and vendor

vendor/github.com/go-openapi/analysis/internal/debug/debug.go

@@ -0,0 +1,41 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package debug
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+)
+
+var (
+	output = os.Stdout
+)
+
+// GetLogger provides a prefix debug logger
+func GetLogger(prefix string, debug bool) func(string, ...interface{}) {
+	if debug {
+		logger := log.New(output, prefix+":", log.LstdFlags)
+
+		return func(msg string, args ...interface{}) {
+			_, file1, pos1, _ := runtime.Caller(1)
+			logger.Printf("%s:%d: %s", filepath.Base(file1), pos1, fmt.Sprintf(msg, args...))
+		}
+	}
+
+	return func(_ string, _ ...interface{}) {}
+}