diff options
Diffstat (limited to 'vendor/github.com/mattn/go-isatty/isatty_windows.go')
-rw-r--r-- | vendor/github.com/mattn/go-isatty/isatty_windows.go | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/vendor/github.com/mattn/go-isatty/isatty_windows.go b/vendor/github.com/mattn/go-isatty/isatty_windows.go deleted file mode 100644 index 1fa869154..000000000 --- a/vendor/github.com/mattn/go-isatty/isatty_windows.go +++ /dev/null @@ -1,125 +0,0 @@ -// +build windows -// +build !appengine - -package isatty - -import ( - "errors" - "strings" - "syscall" - "unicode/utf16" - "unsafe" -) - -const ( - objectNameInfo uintptr = 1 - fileNameInfo = 2 - fileTypePipe = 3 -) - -var ( - kernel32 = syscall.NewLazyDLL("kernel32.dll") - ntdll = syscall.NewLazyDLL("ntdll.dll") - procGetConsoleMode = kernel32.NewProc("GetConsoleMode") - procGetFileInformationByHandleEx = kernel32.NewProc("GetFileInformationByHandleEx") - procGetFileType = kernel32.NewProc("GetFileType") - procNtQueryObject = ntdll.NewProc("NtQueryObject") -) - -func init() { - // Check if GetFileInformationByHandleEx is available. - if procGetFileInformationByHandleEx.Find() != nil { - procGetFileInformationByHandleEx = nil - } -} - -// IsTerminal return true if the file descriptor is terminal. -func IsTerminal(fd uintptr) bool { - var st uint32 - r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, fd, uintptr(unsafe.Pointer(&st)), 0) - return r != 0 && e == 0 -} - -// Check pipe name is used for cygwin/msys2 pty. -// Cygwin/MSYS2 PTY has a name like: -// \{cygwin,msys}-XXXXXXXXXXXXXXXX-ptyN-{from,to}-master -func isCygwinPipeName(name string) bool { - token := strings.Split(name, "-") - if len(token) < 5 { - return false - } - - if token[0] != `\msys` && - token[0] != `\cygwin` && - token[0] != `\Device\NamedPipe\msys` && - token[0] != `\Device\NamedPipe\cygwin` { - return false - } - - if token[1] == "" { - return false - } - - if !strings.HasPrefix(token[2], "pty") { - return false - } - - if token[3] != `from` && token[3] != `to` { - return false - } - - if token[4] != "master" { - return false - } - - return true -} - -// getFileNameByHandle use the undocomented ntdll NtQueryObject to get file full name from file handler -// since GetFileInformationByHandleEx is not avilable under windows Vista and still some old fashion -// guys are using Windows XP, this is a workaround for those guys, it will also work on system from -// Windows vista to 10 -// see https://stackoverflow.com/a/18792477 for details -func getFileNameByHandle(fd uintptr) (string, error) { - if procNtQueryObject == nil { - return "", errors.New("ntdll.dll: NtQueryObject not supported") - } - - var buf [4 + syscall.MAX_PATH]uint16 - var result int - r, _, e := syscall.Syscall6(procNtQueryObject.Addr(), 5, - fd, objectNameInfo, uintptr(unsafe.Pointer(&buf)), uintptr(2*len(buf)), uintptr(unsafe.Pointer(&result)), 0) - if r != 0 { - return "", e - } - return string(utf16.Decode(buf[4 : 4+buf[0]/2])), nil -} - -// IsCygwinTerminal() return true if the file descriptor is a cygwin or msys2 -// terminal. -func IsCygwinTerminal(fd uintptr) bool { - if procGetFileInformationByHandleEx == nil { - name, err := getFileNameByHandle(fd) - if err != nil { - return false - } - return isCygwinPipeName(name) - } - - // Cygwin/msys's pty is a pipe. - ft, _, e := syscall.Syscall(procGetFileType.Addr(), 1, fd, 0, 0) - if ft != fileTypePipe || e != 0 { - return false - } - - var buf [2 + syscall.MAX_PATH]uint16 - r, _, e := syscall.Syscall6(procGetFileInformationByHandleEx.Addr(), - 4, fd, fileNameInfo, uintptr(unsafe.Pointer(&buf)), - uintptr(len(buf)*2), 0, 0) - if r == 0 || e != 0 { - return false - } - - l := *(*uint32)(unsafe.Pointer(&buf)) - return isCygwinPipeName(string(utf16.Decode(buf[2 : 2+l/2]))) -} |