/
store.go
91 lines (86 loc) · 2.33 KB
/
store.go
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/*
* Copyright 2021 Wang Min Xiang
*
* 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 configures
import (
"fmt"
"io/fs"
"os"
"path/filepath"
"strings"
)
func NewFileStore(configPath string, prefix string, splitter byte) Store {
return &FileStore{
configPath: configPath,
prefix: prefix,
splitter: splitter,
}
}
type FileStore struct {
configPath string
prefix string
splitter byte
}
func (store *FileStore) Read() (root []byte, subs map[string][]byte, err error) {
file, openErr := os.Open(store.configPath)
if openErr != nil {
err = fmt.Errorf("config file store open %s failed, %v", store.configPath, openErr)
return
}
fileStat, statErr := file.Stat()
if statErr != nil {
err = fmt.Errorf("config file store get %s file info failed, %v", store.configPath, statErr)
return
}
if !fileStat.IsDir() {
_ = file.Close()
fileContent, readErr := os.ReadFile(store.configPath)
if readErr != nil {
err = fmt.Errorf("config file store read %s failed, %v", store.configPath, readErr)
return
}
root = fileContent
return
}
subs = make(map[string][]byte)
dirErr := filepath.Walk(store.configPath, func(path string, info fs.FileInfo, cause error) (err error) {
if info.IsDir() {
return
}
filename := filepath.Base(path)
if strings.Index(filename, store.prefix) != 0 {
return
}
fileContent, readErr := os.ReadFile(path)
if readErr != nil {
err = fmt.Errorf("read %s failed, %v", path, readErr)
return
}
key := filename[:strings.LastIndexByte(filename, '.')]
idx := strings.IndexByte(key, store.splitter)
if idx < 1 {
root = fileContent
return
}
key = key[idx+1:]
subs[strings.ToUpper(strings.TrimSpace(key))] = fileContent
return
})
if dirErr != nil {
err = fmt.Errorf("config file store read %s dir failed, %v", store.configPath, dirErr)
return
}
return
}