mirror of
https://gitee.com/johng/gf.git
synced 2024-11-30 11:18:02 +08:00
83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// Copyright 2017 gf Author(https://github.com/gogf/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gfile
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import (
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"os"
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"runtime"
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"strings"
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"github.com/gogf/gf/text/gregex"
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)
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var (
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// goRootForFilter is used for stack filtering purpose.
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goRootForFilter = runtime.GOROOT()
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)
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func init() {
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if goRootForFilter != "" {
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goRootForFilter = strings.Replace(goRootForFilter, "\\", "/", -1)
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}
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}
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// MainPkgPath returns absolute file path of package main,
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// which contains the entrance function main.
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//
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// It's only available in develop environment.
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//
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// Note1: Only valid for source development environments,
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// IE only valid for systems that generate this executable.
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//
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// Note2: When the method is called for the first time, if it is in an asynchronous goroutine,
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// the method may not get the main package path.
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func MainPkgPath() string {
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// Only for source development environments.
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if goRootForFilter == "" {
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return ""
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}
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path := mainPkgPath.Val()
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if path != "" {
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return path
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}
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lastFile := ""
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for i := 1; i < 10000; i++ {
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if _, file, _, ok := runtime.Caller(i); ok {
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if goRootForFilter != "" && len(file) >= len(goRootForFilter) && file[0:len(goRootForFilter)] == goRootForFilter {
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continue
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}
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if gregex.IsMatchString(`/github.com/[^/]+/gf/`, file) &&
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!gregex.IsMatchString(`/github.com/[^/]+/gf/\.example/`, file) {
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continue
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}
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if Ext(file) != ".go" {
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continue
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}
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lastFile = file
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if gregex.IsMatchString(`package\s+main`, GetContents(file)) {
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mainPkgPath.Set(Dir(file))
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return Dir(file)
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}
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} else {
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break
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}
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}
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if lastFile != "" {
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for path = Dir(lastFile); len(path) > 1 && Exists(path) && path[len(path)-1] != os.PathSeparator; {
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files, _ := ScanDir(path, "*.go")
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for _, v := range files {
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if gregex.IsMatchString(`package\s+main`, GetContents(v)) {
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mainPkgPath.Set(path)
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return path
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}
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}
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path = Dir(path)
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}
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}
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return ""
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}
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