github.com/stffabi/git-lfs@v2.3.5-0.20180214015214-8eeaa8d88902+incompatible/commands/path_windows.go (about)

     1  // +build windows
     2  
     3  package commands
     4  
     5  import (
     6  	"path/filepath"
     7  	"regexp"
     8  	"strings"
     9  	"sync"
    10  
    11  	"github.com/git-lfs/git-lfs/subprocess"
    12  )
    13  
    14  var (
    15  	winBashPrefix string
    16  	winBashMu     sync.Mutex
    17  	winBashRe     *regexp.Regexp
    18  )
    19  
    20  func osLineEnding() string {
    21  	return "\r\n"
    22  }
    23  
    24  // cleanRootPath replaces the windows root path prefix with a unix path prefix:
    25  // "/". Git Bash (provided with Git For Windows) expands a path like "/foo" to
    26  // the actual Windows directory, but with forward slashes. You can see this
    27  // for yourself:
    28  //
    29  //   $ git /foo
    30  //   git: 'C:/Program Files/Git/foo' is not a git command. See 'git --help'.
    31  //
    32  // You can check the path with `pwd -W`:
    33  //
    34  //   $ cd /
    35  //   $ pwd
    36  //   /
    37  //   $ pwd -W
    38  //   c:/Program Files/Git
    39  func cleanRootPath(pattern string) string {
    40  	winBashMu.Lock()
    41  	defer winBashMu.Unlock()
    42  
    43  	// check if path starts with windows drive letter
    44  	if !winPathHasDrive(pattern) {
    45  		return pattern
    46  	}
    47  
    48  	if len(winBashPrefix) < 1 {
    49  		// cmd.Path is something like C:\Program Files\Git\usr\bin\pwd.exe
    50  		cmd := subprocess.ExecCommand("pwd")
    51  		winBashPrefix = strings.Replace(filepath.Dir(filepath.Dir(filepath.Dir(cmd.Path))), `\`, "/", -1) + "/"
    52  	}
    53  
    54  	return strings.Replace(pattern, winBashPrefix, "/", 1)
    55  }
    56  
    57  func winPathHasDrive(pattern string) bool {
    58  	if winBashRe == nil {
    59  		winBashRe = regexp.MustCompile(`\A\w{1}:[/\/]`)
    60  	}
    61  
    62  	return winBashRe.MatchString(pattern)
    63  }