/
functions.go
88 lines (78 loc) · 2.46 KB
/
functions.go
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// Copyright 2022-2023 The sacloud/iaas-api-go Authors
//
// 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 tools
import (
"bytes"
"go/build"
"go/format"
"log"
"os"
"path/filepath"
"text/template"
)
// TemplateConfig ソース生成を行うためのテンプレート設定
type TemplateConfig struct {
OutputPath string
Template string
Parameter interface{}
PreventOverwriting bool
}
// WriteFileWithTemplate 指定の設定に従いファイル出力
func WriteFileWithTemplate(config *TemplateConfig) bool {
buf := bytes.NewBufferString("")
t := template.New("t")
template.Must(t.Parse(config.Template))
if err := t.Execute(buf, config.Parameter); err != nil {
log.Fatalf("writing output: %s", err)
}
// create dir
if _, err := os.Stat(filepath.Dir(config.OutputPath)); err != nil && os.IsNotExist(err) {
if err := os.MkdirAll(filepath.Dir(config.OutputPath), 0755); err != nil {
log.Fatal(err)
}
}
if config.PreventOverwriting {
if _, err := os.Stat(config.OutputPath); err == nil {
return false
}
}
// write to file
if err := os.WriteFile(config.OutputPath, Sformat(buf.Bytes()), 0644); err != nil { //nolint:gosec
log.Fatalf("writing output: %s", err)
}
return true
}
// Gopath returns GOPATH
func Gopath() string {
gopath := build.Default.GOPATH
gopath = filepath.SplitList(gopath)[0]
return gopath
}
// ProjectRootPath プロジェクトルートパス
func ProjectRootPath() string {
return filepath.Join(Gopath(), "src/github.com/sacloud/iaas-api-go")
}
// Sformat formats go source codes
func Sformat(buf []byte) []byte {
src, err := format.Source(buf)
if err != nil {
// Should never happen, but can arise when developing this code.
// The user can compile the output to see the error.
log.Printf("warning: internal error: invalid Go generated: %s", err)
log.Printf("warning: compile the package to analyze the error")
log.Printf("generated: \n%s", string(buf))
return buf
}
return src
}