github.com/michaellihs/golab@v0.1.0-beta3.0.20180726222757-f5cdabc76dfd/cmd/helpers/git_helper.go (about)

     1  // Copyright © 2018 Michael Lihs
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package helpers
    22  
    23  import (
    24  	"errors"
    25  	"net"
    26  	"net/url"
    27  	"os/exec"
    28  	"regexp"
    29  	"strings"
    30  )
    31  
    32  type gitHelper struct {
    33  }
    34  
    35  func GitHelper() gitHelper {
    36  	return gitHelper{}
    37  }
    38  
    39  func (g gitHelper) GetRemotes() (string, error) {
    40  	out, err := exec.Command("git", "remote", "-v").Output()
    41  	return string(out), err
    42  }
    43  
    44  func (g gitHelper) GetRemoteUrl(remotes string) (string, error) {
    45  	re := regexp.MustCompile("origin\\s*(.+?)\\s*\\(fetch\\)")
    46  	match := re.FindStringSubmatch(remotes)
    47  	if len(match) > 1 {
    48  		return match[1], nil
    49  	}
    50  	return "", errors.New("Could not find URL in " + remotes)
    51  }
    52  
    53  func (g gitHelper) GetWebUrl(remoteUrl string) (string, error) {
    54  	if strings.HasPrefix(remoteUrl, "http") {
    55  		return webifyHttpRemote(remoteUrl)
    56  	} else if strings.HasPrefix(remoteUrl, "git@") {
    57  		return webifyGitRemote(remoteUrl)
    58  	} else if strings.HasPrefix(remoteUrl, "ssh") {
    59  		return webifySshRemote(remoteUrl)
    60  	} else {
    61  		return "", errors.New("Cannot parse remote URL: " + remoteUrl)
    62  	}
    63  }
    64  
    65  func webifySshRemote(remoteUrl string) (string, error) {
    66  	u, err := url.Parse(remoteUrl)
    67  	if err != nil {
    68  		return "", err
    69  	}
    70  	host := ""
    71  	if strings.Contains(u.Host, ":") {
    72  		host, _, err = net.SplitHostPort(u.Host)
    73  	} else {
    74  		host = u.Host
    75  	}
    76  	return "https://" + host + strings.TrimSuffix(u.Path, ".git"), nil
    77  }
    78  
    79  func webifyGitRemote(remoteUrl string) (string, error) {
    80  	url := strings.TrimRight(remoteUrl[4:], ".git")
    81  	url = strings.Replace(url, ":", "/", 1)
    82  	return "https://" + url, nil
    83  }
    84  
    85  func webifyHttpRemote(remoteUrl string) (string, error) {
    86  	if strings.HasSuffix(remoteUrl, ".git") {
    87  		return strings.TrimSuffix(remoteUrl, ".git"), nil
    88  	}
    89  	return remoteUrl, nil
    90  }