"Native" Glob function for Windows. Very old code (2009 or 2010).

w32glob.go

package w32glob

import (
	"container/vector"
	"os"
	"strings"
	"syscall"
)

func Glob(patterns []string) ([]string, os.Error) {
	var path, name string
	var i, errno int
	var handle int32
	var f syscall.Win32finddata

	files := make(vector.StringVector, 0)

	for _, p := range patterns {
		i = strings.LastIndexFunc(p, func(r int) bool {
			return r == '\\' || r == ':' || r == '/'
		})
		if i != -1 {
			path = p[0 : i+1]
		} else {
			path = ""
		}

		handle, errno = syscall.FindFirstFile(syscall.StringToUTF16Ptr(p), &f)
		if handle == -1 { // INVALID_HANDLE_VALUE
			return nil, os.NewError(syscall.Errstr(errno))
		}
		defer syscall.FindClose(handle)
		for errno == 0 {
			name = syscall.UTF16ToString(f.FileName[0:])
			if name != "." && name != ".." {
				files.Push(path + name)
			}
			_, errno = syscall.FindNextFile(handle, &f)
		}
		if errno != syscall.ERROR_NO_MORE_FILES {
			return nil, os.NewError(syscall.Errstr(errno))
		}
	}
	return files, nil
}