github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/Unknwon/com/path.go (about)

     1  // Copyright 2013 com authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License"): you may
     4  // not use this file except in compliance with the License. You may obtain
     5  // a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    11  // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    12  // License for the specific language governing permissions and limitations
    13  // under the License.
    14  
    15  package com
    16  
    17  import (
    18  	"errors"
    19  	"os"
    20  	"path/filepath"
    21  	"runtime"
    22  	"strings"
    23  )
    24  
    25  // GetGOPATHs returns all paths in GOPATH variable.
    26  func GetGOPATHs() []string {
    27  	gopath := os.Getenv("GOPATH")
    28  	var paths []string
    29  	if runtime.GOOS == "windows" {
    30  		gopath = strings.Replace(gopath, "\\", "/", -1)
    31  		paths = strings.Split(gopath, ";")
    32  	} else {
    33  		paths = strings.Split(gopath, ":")
    34  	}
    35  	return paths
    36  }
    37  
    38  // GetSrcPath returns app. source code path.
    39  // It only works when you have src. folder in GOPATH,
    40  // it returns error not able to locate source folder path.
    41  func GetSrcPath(importPath string) (appPath string, err error) {
    42  	paths := GetGOPATHs()
    43  	for _, p := range paths {
    44  		if IsExist(p + "/src/" + importPath + "/") {
    45  			appPath = p + "/src/" + importPath + "/"
    46  			break
    47  		}
    48  	}
    49  
    50  	if len(appPath) == 0 {
    51  		return "", errors.New("Unable to locate source folder path")
    52  	}
    53  
    54  	appPath = filepath.Dir(appPath) + "/"
    55  	if runtime.GOOS == "windows" {
    56  		// Replace all '\' to '/'.
    57  		appPath = strings.Replace(appPath, "\\", "/", -1)
    58  	}
    59  
    60  	return appPath, nil
    61  }
    62  
    63  // HomeDir returns path of '~'(in Linux) on Windows,
    64  // it returns error when the variable does not exist.
    65  func HomeDir() (home string, err error) {
    66  	if runtime.GOOS == "windows" {
    67  		home = os.Getenv("USERPROFILE")
    68  		if len(home) == 0 {
    69  			home = os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
    70  		}
    71  	} else {
    72  		home = os.Getenv("HOME")
    73  	}
    74  
    75  	if len(home) == 0 {
    76  		return "", errors.New("Cannot specify home directory because it's empty")
    77  	}
    78  
    79  	return home, nil
    80  }