init

Signed-off-by: storyicon <yuanchao@bilibili.com>

pkg/util/yaml.go

@@ -0,0 +1,74 @@
+// Copyright 2021 storyicon@foxmail.com
+//
+// 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 util
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+
+	"github.com/hashicorp/go-multierror"
+	"gopkg.in/yaml.v2"
+)
+
+// SplitYAML is used to split yaml
+func SplitYAML(data []byte) ([][]byte, error) {
+	decoder := yaml.NewDecoder(bytes.NewReader(data))
+	var parts [][]byte
+	for {
+		var value interface{}
+		err := decoder.Decode(&value)
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		part, err := yaml.Marshal(value)
+		if err != nil {
+			return nil, err
+		}
+		parts = append(parts, part)
+	}
+	return parts, nil
+}
+
+// DumpYaml is used to dump yaml into stdout
+func DumpYaml(cfg interface{}) {
+	out, err := yaml.Marshal(cfg)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+	} else {
+		fmt.Printf("%s\n", out)
+	}
+}
+
+// LoadConfig read YAML-formatted config from filename into cfg.
+func LoadConfig(filename string, pointer interface{}) error {
+	buf, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return multierror.Prefix(err, "Error reading config file")
+	}
+
+	err = yaml.UnmarshalStrict(buf, pointer)
+	if err != nil {
+		return multierror.Prefix(err, "Error parsing config file")
+	}
+
+	return nil
+}
+