github.com/ActiveState/cli@v0.0.0-20240508170324-6801f60cd051/internal/fileutils/path_helpers_win.go (about)

     1  //go:build windows
     2  // +build windows
     3  
     4  package fileutils
     5  
     6  import (
     7  	"syscall"
     8  
     9  	"github.com/ActiveState/cli/internal/errs"
    10  )
    11  
    12  // GetShortPathName returns the Windows short path (ie., DOS 8.3 notation)
    13  func GetShortPathName(path string) (string, error) {
    14  	p, err := syscall.UTF16FromString(path)
    15  	if err != nil {
    16  		return "", errs.Wrap(err, "failed to convert path to UTF16")
    17  	}
    18  	b := p // GetShortPathName says we can reuse buffer
    19  	n, err := syscall.GetShortPathName(&p[0], &b[0], uint32(len(b)))
    20  	if err != nil {
    21  		return "", err
    22  	}
    23  	if n > uint32(len(b)) {
    24  		b = make([]uint16, n)
    25  		_, err = syscall.GetShortPathName(&p[0], &b[0], uint32(len(b)))
    26  		if err != nil {
    27  			return "", err
    28  		}
    29  	}
    30  	return syscall.UTF16ToString(b), nil
    31  }
    32  
    33  // GetLongPathName name returns the Windows long path (ie., DOS 8.3 notation is expanded)
    34  func GetLongPathName(path string) (string, error) {
    35  	p, err := syscall.UTF16FromString(path)
    36  	if err != nil {
    37  		return "", errs.Wrap(err, "failed to convert path to UTF16")
    38  	}
    39  	b := p // GetLongPathName says we can reuse buffer
    40  	n, err := syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
    41  	if err != nil {
    42  		return "", err
    43  	}
    44  	if n > uint32(len(b)) {
    45  		b = make([]uint16, n)
    46  		n, err = syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
    47  		if err != nil {
    48  			return "", err
    49  		}
    50  	}
    51  	b = b[:n]
    52  	return syscall.UTF16ToString(b), nil
    53  }