Godeps, vendor: convert dependency management to trash (#3198)

This commit converts the dependency management from Godeps to the vendor
folder, also switching the tool from godep to trash. Since the upstream tool
lacks a few features proposed via a few PRs, until those PRs are merged in
(if), use github.com/karalabe/trash.

You can update dependencies via trash --update.

All dependencies have been updated to their latest version.

Parts of the build system are reworked to drop old notions of Godeps and
invocation of the go vet command so that it doesn't run against the vendor
folder, as that will just blow up during vetting.

The conversion drops OpenCL (and hence GPU mining support) from ethash and our
codebase. The short reasoning is that there's noone to maintain and having
opencl libs in our deps messes up builds as go install ./... tries to build
them, failing with unsatisfied link errors for the C OpenCL deps.

golang.org/x/net/context is not vendored in. We expect it to be fetched by the
user (i.e. using go get). To keep ci.go builds reproducible the package is
"vendored" in build/_vendor.

1 files changed, 324 insertions, 0 deletions

diff --git a/vendor/github.com/peterh/liner/input_windows.go b/vendor/github.com/peterh/liner/input_windows.go
new file mode 100644
index 000000000..199b9428e
--- /dev/null
+++ b/vendor/github.com/peterh/liner/input_windows.go
@@ -0,0 +1,324 @@
+package liner
+
+import (
+	"bufio"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+var (
+	kernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+	procGetStdHandle               = kernel32.NewProc("GetStdHandle")
+	procReadConsoleInput           = kernel32.NewProc("ReadConsoleInputW")
+	procGetConsoleMode             = kernel32.NewProc("GetConsoleMode")
+	procSetConsoleMode             = kernel32.NewProc("SetConsoleMode")
+	procSetConsoleCursorPosition   = kernel32.NewProc("SetConsoleCursorPosition")
+	procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
+	procFillConsoleOutputCharacter = kernel32.NewProc("FillConsoleOutputCharacterW")
+)
+
+// These names are from the Win32 api, so they use underscores (contrary to
+// what golint suggests)
+const (
+	std_input_handle     = uint32(-10 & 0xFFFFFFFF)
+	std_output_handle    = uint32(-11 & 0xFFFFFFFF)
+	std_error_handle     = uint32(-12 & 0xFFFFFFFF)
+	invalid_handle_value = ^uintptr(0)
+)
+
+type inputMode uint32
+
+// State represents an open terminal
+type State struct {
+	commonState
+	handle      syscall.Handle
+	hOut        syscall.Handle
+	origMode    inputMode
+	defaultMode inputMode
+	key         interface{}
+	repeat      uint16
+}
+
+const (
+	enableEchoInput      = 0x4
+	enableInsertMode     = 0x20
+	enableLineInput      = 0x2
+	enableMouseInput     = 0x10
+	enableProcessedInput = 0x1
+	enableQuickEditMode  = 0x40
+	enableWindowInput    = 0x8
+)
+
+// NewLiner initializes a new *State, and sets the terminal into raw mode. To
+// restore the terminal to its previous state, call State.Close().
+func NewLiner() *State {
+	var s State
+	hIn, _, _ := procGetStdHandle.Call(uintptr(std_input_handle))
+	s.handle = syscall.Handle(hIn)
+	hOut, _, _ := procGetStdHandle.Call(uintptr(std_output_handle))
+	s.hOut = syscall.Handle(hOut)
+
+	s.terminalSupported = true
+	if m, err := TerminalMode(); err == nil {
+		s.origMode = m.(inputMode)
+		mode := s.origMode
+		mode &^= enableEchoInput
+		mode &^= enableInsertMode
+		mode &^= enableLineInput
+		mode &^= enableMouseInput
+		mode |= enableWindowInput
+		mode.ApplyMode()
+	} else {
+		s.inputRedirected = true
+		s.r = bufio.NewReader(os.Stdin)
+	}
+
+	s.getColumns()
+	s.outputRedirected = s.columns <= 0
+
+	return &s
+}
+
+// These names are from the Win32 api, so they use underscores (contrary to
+// what golint suggests)
+const (
+	focus_event              = 0x0010
+	key_event                = 0x0001
+	menu_event               = 0x0008
+	mouse_event              = 0x0002
+	window_buffer_size_event = 0x0004
+)
+
+type input_record struct {
+	eventType uint16
+	pad       uint16
+	blob      [16]byte
+}
+
+type key_event_record struct {
+	KeyDown         int32
+	RepeatCount     uint16
+	VirtualKeyCode  uint16
+	VirtualScanCode uint16
+	Char            int16
+	ControlKeyState uint32
+}
+
+// These names are from the Win32 api, so they use underscores (contrary to
+// what golint suggests)
+const (
+	vk_tab    = 0x09
+	vk_prior  = 0x21
+	vk_next   = 0x22
+	vk_end    = 0x23
+	vk_home   = 0x24
+	vk_left   = 0x25
+	vk_up     = 0x26
+	vk_right  = 0x27
+	vk_down   = 0x28
+	vk_insert = 0x2d
+	vk_delete = 0x2e
+	vk_f1     = 0x70
+	vk_f2     = 0x71
+	vk_f3     = 0x72
+	vk_f4     = 0x73
+	vk_f5     = 0x74
+	vk_f6     = 0x75
+	vk_f7     = 0x76
+	vk_f8     = 0x77
+	vk_f9     = 0x78
+	vk_f10    = 0x79
+	vk_f11    = 0x7a
+	vk_f12    = 0x7b
+	bKey      = 0x42
+	fKey      = 0x46
+	yKey      = 0x59
+)
+
+const (
+	shiftPressed     = 0x0010
+	leftAltPressed   = 0x0002
+	leftCtrlPressed  = 0x0008
+	rightAltPressed  = 0x0001
+	rightCtrlPressed = 0x0004
+
+	modKeys = shiftPressed | leftAltPressed | rightAltPressed | leftCtrlPressed | rightCtrlPressed
+)
+
+func (s *State) readNext() (interface{}, error) {
+	if s.repeat > 0 {
+		s.repeat--
+		return s.key, nil
+	}
+
+	var input input_record
+	pbuf := uintptr(unsafe.Pointer(&input))
+	var rv uint32
+	prv := uintptr(unsafe.Pointer(&rv))
+
+	for {
+		ok, _, err := procReadConsoleInput.Call(uintptr(s.handle), pbuf, 1, prv)
+
+		if ok == 0 {
+			return nil, err
+		}
+
+		if input.eventType == window_buffer_size_event {
+			xy := (*coord)(unsafe.Pointer(&input.blob[0]))
+			s.columns = int(xy.x)
+			if s.columns > 1 {
+				s.columns--
+			}
+			return winch, nil
+		}
+		if input.eventType != key_event {
+			continue
+		}
+		ke := (*key_event_record)(unsafe.Pointer(&input.blob[0]))
+		if ke.KeyDown == 0 {
+			continue
+		}
+
+		if ke.VirtualKeyCode == vk_tab && ke.ControlKeyState&modKeys == shiftPressed {
+			s.key = shiftTab
+		} else if ke.VirtualKeyCode == bKey && (ke.ControlKeyState&modKeys == leftAltPressed ||
+			ke.ControlKeyState&modKeys == rightAltPressed) {
+			s.key = altB
+		} else if ke.VirtualKeyCode == fKey && (ke.ControlKeyState&modKeys == leftAltPressed ||
+			ke.ControlKeyState&modKeys == rightAltPressed) {
+			s.key = altF
+		} else if ke.VirtualKeyCode == yKey && (ke.ControlKeyState&modKeys == leftAltPressed ||
+			ke.ControlKeyState&modKeys == rightAltPressed) {
+			s.key = altY
+		} else if ke.Char > 0 {
+			s.key = rune(ke.Char)
+		} else {
+			switch ke.VirtualKeyCode {
+			case vk_prior:
+				s.key = pageUp
+			case vk_next:
+				s.key = pageDown
+			case vk_end:
+				s.key = end
+			case vk_home:
+				s.key = home
+			case vk_left:
+				s.key = left
+				if ke.ControlKeyState&(leftCtrlPressed|rightCtrlPressed) != 0 {
+					if ke.ControlKeyState&modKeys == ke.ControlKeyState&(leftCtrlPressed|rightCtrlPressed) {
+						s.key = wordLeft
+					}
+				}
+			case vk_right:
+				s.key = right
+				if ke.ControlKeyState&(leftCtrlPressed|rightCtrlPressed) != 0 {
+					if ke.ControlKeyState&modKeys == ke.ControlKeyState&(leftCtrlPressed|rightCtrlPressed) {
+						s.key = wordRight
+					}
+				}
+			case vk_up:
+				s.key = up
+			case vk_down:
+				s.key = down
+			case vk_insert:
+				s.key = insert
+			case vk_delete:
+				s.key = del
+			case vk_f1:
+				s.key = f1
+			case vk_f2:
+				s.key = f2
+			case vk_f3:
+				s.key = f3
+			case vk_f4:
+				s.key = f4
+			case vk_f5:
+				s.key = f5
+			case vk_f6:
+				s.key = f6
+			case vk_f7:
+				s.key = f7
+			case vk_f8:
+				s.key = f8
+			case vk_f9:
+				s.key = f9
+			case vk_f10:
+				s.key = f10
+			case vk_f11:
+				s.key = f11
+			case vk_f12:
+				s.key = f12
+			default:
+				// Eat modifier keys
+				// TODO: return Action(Unknown) if the key isn't a
+				// modifier.
+				continue
+			}
+		}
+
+		if ke.RepeatCount > 1 {
+			s.repeat = ke.RepeatCount - 1
+		}
+		return s.key, nil
+	}
+	return unknown, nil
+}
+
+// Close returns the terminal to its previous mode
+func (s *State) Close() error {
+	s.origMode.ApplyMode()
+	return nil
+}
+
+func (s *State) startPrompt() {
+	if m, err := TerminalMode(); err == nil {
+		s.defaultMode = m.(inputMode)
+		mode := s.defaultMode
+		mode &^= enableProcessedInput
+		mode.ApplyMode()
+	}
+}
+
+func (s *State) restartPrompt() {
+}
+
+func (s *State) stopPrompt() {
+	s.defaultMode.ApplyMode()
+}
+
+// TerminalSupported returns true because line editing is always
+// supported on Windows.
+func TerminalSupported() bool {
+	return true
+}
+
+func (mode inputMode) ApplyMode() error {
+	hIn, _, err := procGetStdHandle.Call(uintptr(std_input_handle))
+	if hIn == invalid_handle_value || hIn == 0 {
+		return err
+	}
+	ok, _, err := procSetConsoleMode.Call(hIn, uintptr(mode))
+	if ok != 0 {
+		err = nil
+	}
+	return err
+}
+
+// TerminalMode returns the current terminal input mode as an InputModeSetter.
+//
+// This function is provided for convenience, and should
+// not be necessary for most users of liner.
+func TerminalMode() (ModeApplier, error) {
+	var mode inputMode
+	hIn, _, err := procGetStdHandle.Call(uintptr(std_input_handle))
+	if hIn == invalid_handle_value || hIn == 0 {
+		return nil, err
+	}
+	ok, _, err := procGetConsoleMode.Call(hIn, uintptr(unsafe.Pointer(&mode)))
+	if ok != 0 {
+		err = nil
+	}
+	return mode, err
+}