gf/g/os/gfile/gfile_search.go

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// Copyright 2017-2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gfile
import (
"bytes"
"errors"
"fmt"
"github.com/gogf/gf/g/container/garray"
)
// 如果给定绝对路径将会去掉其中的相对路径符号后返回;
// 如果是给定的相对路径,那么将会按照以下路径优先级搜索文件(重复路径会去重)
// prioritySearchPaths、当前工作目录、二进制文件目录、源码main包目录(开发环境下)
func Search(name string, prioritySearchPaths...string) (realPath string, err error) {
// 是否绝对路径
realPath = RealPath(name)
if realPath != "" {
return
}
// 相对路径搜索
array := garray.NewStringArray(true)
// 自定义优先路径
array.Append(prioritySearchPaths...)
// 用户工作目录
array.Append(Pwd())
// 二进制所在目录
array.Append(SelfDir())
// 源码main包目录
if path := MainPkgPath(); path != "" {
array.Append(path)
}
// 路径去重
array.Unique()
// 执行相对路径搜索
array.RLockFunc(func(array []string) {
path := ""
for _, v := range array {
path = RealPath(v + Separator + name)
if path != "" {
realPath = path
break
}
}
})
// 目录不存在错误处理
if realPath == "" {
buffer := bytes.NewBuffer(nil)
buffer.WriteString(fmt.Sprintf("cannot find file/folder \"%s\" in following paths:", name))
array.RLockFunc(func(array []string) {
for k, v := range array {
buffer.WriteString(fmt.Sprintf("\n%d. %s", k + 1, v))
}
})
err = errors.New(buffer.String())
}
return
}