/
template.go
57 lines (50 loc) · 1.63 KB
/
template.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 Tencent. All Rights Reserved.
*
* 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
*
* https://opensource.org/licenses/Apache-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 OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package template
import (
"bytes"
"io/ioutil"
"strings"
"text/template"
"github.com/pkg/errors"
)
// ParseFile validates and parses passed as argument template file
func ParseFile(filename string, obj interface{}) ([]byte, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return ParseString(string(data), obj)
}
// ParseString validates and parses passed as argument template
func ParseString(strtmpl string, obj interface{}) ([]byte, error) {
var buf bytes.Buffer
tmpl, err := template.New("template").Funcs(template.FuncMap{"spaces": spaces}).Parse(strtmpl)
if err != nil {
return nil, errors.Wrap(err, "error when parsing template")
}
err = tmpl.Execute(&buf, obj)
if err != nil {
return nil, errors.Wrap(err, "error when executing template")
}
return buf.Bytes(), nil
}
func spaces(n int, v string) string {
pad := strings.Repeat(" ", n)
return pad + strings.Replace(v, "\n", "\n"+pad, -1)
}