diff options
Diffstat (limited to 'vendor/github.com/Azure/go-ansiterm/winterm')
8 files changed, 1642 insertions, 0 deletions
diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/ansi.go b/vendor/github.com/Azure/go-ansiterm/winterm/ansi.go new file mode 100644 index 000000000..daf2f0696 --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/ansi.go @@ -0,0 +1,182 @@ +// +build windows + +package winterm + +import ( + "fmt" + "os" + "strconv" + "strings" + "syscall" + + "github.com/Azure/go-ansiterm" +) + +// Windows keyboard constants +// See https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731(v=vs.85).aspx. +const ( + VK_PRIOR = 0x21 // PAGE UP key + VK_NEXT = 0x22 // PAGE DOWN key + VK_END = 0x23 // END key + VK_HOME = 0x24 // HOME key + VK_LEFT = 0x25 // LEFT ARROW key + VK_UP = 0x26 // UP ARROW key + VK_RIGHT = 0x27 // RIGHT ARROW key + VK_DOWN = 0x28 // DOWN ARROW key + VK_SELECT = 0x29 // SELECT key + VK_PRINT = 0x2A // PRINT key + VK_EXECUTE = 0x2B // EXECUTE key + VK_SNAPSHOT = 0x2C // PRINT SCREEN key + VK_INSERT = 0x2D // INS key + VK_DELETE = 0x2E // DEL key + VK_HELP = 0x2F // HELP key + VK_F1 = 0x70 // F1 key + VK_F2 = 0x71 // F2 key + VK_F3 = 0x72 // F3 key + VK_F4 = 0x73 // F4 key + VK_F5 = 0x74 // F5 key + VK_F6 = 0x75 // F6 key + VK_F7 = 0x76 // F7 key + VK_F8 = 0x77 // F8 key + VK_F9 = 0x78 // F9 key + VK_F10 = 0x79 // F10 key + VK_F11 = 0x7A // F11 key + VK_F12 = 0x7B // F12 key + + RIGHT_ALT_PRESSED = 0x0001 + LEFT_ALT_PRESSED = 0x0002 + RIGHT_CTRL_PRESSED = 0x0004 + LEFT_CTRL_PRESSED = 0x0008 + SHIFT_PRESSED = 0x0010 + NUMLOCK_ON = 0x0020 + SCROLLLOCK_ON = 0x0040 + CAPSLOCK_ON = 0x0080 + ENHANCED_KEY = 0x0100 +) + +type ansiCommand struct { + CommandBytes []byte + Command string + Parameters []string + IsSpecial bool +} + +func newAnsiCommand(command []byte) *ansiCommand { + + if isCharacterSelectionCmdChar(command[1]) { + // Is Character Set Selection commands + return &ansiCommand{ + CommandBytes: command, + Command: string(command), + IsSpecial: true, + } + } + + // last char is command character + lastCharIndex := len(command) - 1 + + ac := &ansiCommand{ + CommandBytes: command, + Command: string(command[lastCharIndex]), + IsSpecial: false, + } + + // more than a single escape + if lastCharIndex != 0 { + start := 1 + // skip if double char escape sequence + if command[0] == ansiterm.ANSI_ESCAPE_PRIMARY && command[1] == ansiterm.ANSI_ESCAPE_SECONDARY { + start++ + } + // convert this to GetNextParam method + ac.Parameters = strings.Split(string(command[start:lastCharIndex]), ansiterm.ANSI_PARAMETER_SEP) + } + + return ac +} + +func (ac *ansiCommand) paramAsSHORT(index int, defaultValue int16) int16 { + if index < 0 || index >= len(ac.Parameters) { + return defaultValue + } + + param, err := strconv.ParseInt(ac.Parameters[index], 10, 16) + if err != nil { + return defaultValue + } + + return int16(param) +} + +func (ac *ansiCommand) String() string { + return fmt.Sprintf("0x%v \"%v\" (\"%v\")", + bytesToHex(ac.CommandBytes), + ac.Command, + strings.Join(ac.Parameters, "\",\"")) +} + +// isAnsiCommandChar returns true if the passed byte falls within the range of ANSI commands. +// See http://manpages.ubuntu.com/manpages/intrepid/man4/console_codes.4.html. +func isAnsiCommandChar(b byte) bool { + switch { + case ansiterm.ANSI_COMMAND_FIRST <= b && b <= ansiterm.ANSI_COMMAND_LAST && b != ansiterm.ANSI_ESCAPE_SECONDARY: + return true + case b == ansiterm.ANSI_CMD_G1 || b == ansiterm.ANSI_CMD_OSC || b == ansiterm.ANSI_CMD_DECPAM || b == ansiterm.ANSI_CMD_DECPNM: + // non-CSI escape sequence terminator + return true + case b == ansiterm.ANSI_CMD_STR_TERM || b == ansiterm.ANSI_BEL: + // String escape sequence terminator + return true + } + return false +} + +func isXtermOscSequence(command []byte, current byte) bool { + return (len(command) >= 2 && command[0] == ansiterm.ANSI_ESCAPE_PRIMARY && command[1] == ansiterm.ANSI_CMD_OSC && current != ansiterm.ANSI_BEL) +} + +func isCharacterSelectionCmdChar(b byte) bool { + return (b == ansiterm.ANSI_CMD_G0 || b == ansiterm.ANSI_CMD_G1 || b == ansiterm.ANSI_CMD_G2 || b == ansiterm.ANSI_CMD_G3) +} + +// bytesToHex converts a slice of bytes to a human-readable string. +func bytesToHex(b []byte) string { + hex := make([]string, len(b)) + for i, ch := range b { + hex[i] = fmt.Sprintf("%X", ch) + } + return strings.Join(hex, "") +} + +// ensureInRange adjusts the passed value, if necessary, to ensure it is within +// the passed min / max range. +func ensureInRange(n int16, min int16, max int16) int16 { + if n < min { + return min + } else if n > max { + return max + } else { + return n + } +} + +func GetStdFile(nFile int) (*os.File, uintptr) { + var file *os.File + switch nFile { + case syscall.STD_INPUT_HANDLE: + file = os.Stdin + case syscall.STD_OUTPUT_HANDLE: + file = os.Stdout + case syscall.STD_ERROR_HANDLE: + file = os.Stderr + default: + panic(fmt.Errorf("Invalid standard handle identifier: %v", nFile)) + } + + fd, err := syscall.GetStdHandle(nFile) + if err != nil { + panic(fmt.Errorf("Invalid standard handle indentifier: %v -- %v", nFile, err)) + } + + return file, uintptr(fd) +} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/api.go b/vendor/github.com/Azure/go-ansiterm/winterm/api.go new file mode 100644 index 000000000..462d92f8e --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/api.go @@ -0,0 +1,322 @@ +// +build windows + +package winterm + +import ( + "fmt" + "syscall" + "unsafe" +) + +//=========================================================================================================== +// IMPORTANT NOTE: +// +// The methods below make extensive use of the "unsafe" package to obtain the required pointers. +// Beginning in Go 1.3, the garbage collector may release local variables (e.g., incoming arguments, stack +// variables) the pointers reference *before* the API completes. +// +// As a result, in those cases, the code must hint that the variables remain in active by invoking the +// dummy method "use" (see below). Newer versions of Go are planned to change the mechanism to no longer +// require unsafe pointers. +// +// If you add or modify methods, ENSURE protection of local variables through the "use" builtin to inform +// the garbage collector the variables remain in use if: +// +// -- The value is not a pointer (e.g., int32, struct) +// -- The value is not referenced by the method after passing the pointer to Windows +// +// See http://golang.org/doc/go1.3. +//=========================================================================================================== + +var ( + kernel32DLL = syscall.NewLazyDLL("kernel32.dll") + + getConsoleCursorInfoProc = kernel32DLL.NewProc("GetConsoleCursorInfo") + setConsoleCursorInfoProc = kernel32DLL.NewProc("SetConsoleCursorInfo") + setConsoleCursorPositionProc = kernel32DLL.NewProc("SetConsoleCursorPosition") + setConsoleModeProc = kernel32DLL.NewProc("SetConsoleMode") + getConsoleScreenBufferInfoProc = kernel32DLL.NewProc("GetConsoleScreenBufferInfo") + setConsoleScreenBufferSizeProc = kernel32DLL.NewProc("SetConsoleScreenBufferSize") + scrollConsoleScreenBufferProc = kernel32DLL.NewProc("ScrollConsoleScreenBufferA") + setConsoleTextAttributeProc = kernel32DLL.NewProc("SetConsoleTextAttribute") + setConsoleWindowInfoProc = kernel32DLL.NewProc("SetConsoleWindowInfo") + writeConsoleOutputProc = kernel32DLL.NewProc("WriteConsoleOutputW") + readConsoleInputProc = kernel32DLL.NewProc("ReadConsoleInputW") + waitForSingleObjectProc = kernel32DLL.NewProc("WaitForSingleObject") +) + +// Windows Console constants +const ( + // Console modes + // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx. + ENABLE_PROCESSED_INPUT = 0x0001 + ENABLE_LINE_INPUT = 0x0002 + ENABLE_ECHO_INPUT = 0x0004 + ENABLE_WINDOW_INPUT = 0x0008 + ENABLE_MOUSE_INPUT = 0x0010 + ENABLE_INSERT_MODE = 0x0020 + ENABLE_QUICK_EDIT_MODE = 0x0040 + ENABLE_EXTENDED_FLAGS = 0x0080 + + ENABLE_PROCESSED_OUTPUT = 0x0001 + ENABLE_WRAP_AT_EOL_OUTPUT = 0x0002 + + // Character attributes + // Note: + // -- The attributes are combined to produce various colors (e.g., Blue + Green will create Cyan). + // Clearing all foreground or background colors results in black; setting all creates white. + // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682088(v=vs.85).aspx#_win32_character_attributes. + FOREGROUND_BLUE uint16 = 0x0001 + FOREGROUND_GREEN uint16 = 0x0002 + FOREGROUND_RED uint16 = 0x0004 + FOREGROUND_INTENSITY uint16 = 0x0008 + FOREGROUND_MASK uint16 = 0x000F + + BACKGROUND_BLUE uint16 = 0x0010 + BACKGROUND_GREEN uint16 = 0x0020 + BACKGROUND_RED uint16 = 0x0040 + BACKGROUND_INTENSITY uint16 = 0x0080 + BACKGROUND_MASK uint16 = 0x00F0 + + COMMON_LVB_MASK uint16 = 0xFF00 + COMMON_LVB_REVERSE_VIDEO uint16 = 0x4000 + COMMON_LVB_UNDERSCORE uint16 = 0x8000 + + // Input event types + // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683499(v=vs.85).aspx. + KEY_EVENT = 0x0001 + MOUSE_EVENT = 0x0002 + WINDOW_BUFFER_SIZE_EVENT = 0x0004 + MENU_EVENT = 0x0008 + FOCUS_EVENT = 0x0010 + + // WaitForSingleObject return codes + WAIT_ABANDONED = 0x00000080 + WAIT_FAILED = 0xFFFFFFFF + WAIT_SIGNALED = 0x0000000 + WAIT_TIMEOUT = 0x00000102 + + // WaitForSingleObject wait duration + WAIT_INFINITE = 0xFFFFFFFF + WAIT_ONE_SECOND = 1000 + WAIT_HALF_SECOND = 500 + WAIT_QUARTER_SECOND = 250 +) + +// Windows API Console types +// -- See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682101(v=vs.85).aspx for Console specific types (e.g., COORD) +// -- See https://msdn.microsoft.com/en-us/library/aa296569(v=vs.60).aspx for comments on alignment +type ( + CHAR_INFO struct { + UnicodeChar uint16 + Attributes uint16 + } + + CONSOLE_CURSOR_INFO struct { + Size uint32 + Visible int32 + } + + CONSOLE_SCREEN_BUFFER_INFO struct { + Size COORD + CursorPosition COORD + Attributes uint16 + Window SMALL_RECT + MaximumWindowSize COORD + } + + COORD struct { + X int16 + Y int16 + } + + SMALL_RECT struct { + Left int16 + Top int16 + Right int16 + Bottom int16 + } + + // INPUT_RECORD is a C/C++ union of which KEY_EVENT_RECORD is one case, it is also the largest + // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683499(v=vs.85).aspx. + INPUT_RECORD struct { + EventType uint16 + KeyEvent KEY_EVENT_RECORD + } + + KEY_EVENT_RECORD struct { + KeyDown int32 + RepeatCount uint16 + VirtualKeyCode uint16 + VirtualScanCode uint16 + UnicodeChar uint16 + ControlKeyState uint32 + } + + WINDOW_BUFFER_SIZE struct { + Size COORD + } +) + +// boolToBOOL converts a Go bool into a Windows int32. +func boolToBOOL(f bool) int32 { + if f { + return int32(1) + } else { + return int32(0) + } +} + +// GetConsoleCursorInfo retrieves information about the size and visiblity of the console cursor. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683163(v=vs.85).aspx. +func GetConsoleCursorInfo(handle uintptr, cursorInfo *CONSOLE_CURSOR_INFO) error { + r1, r2, err := getConsoleCursorInfoProc.Call(handle, uintptr(unsafe.Pointer(cursorInfo)), 0) + return checkError(r1, r2, err) +} + +// SetConsoleCursorInfo sets the size and visiblity of the console cursor. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686019(v=vs.85).aspx. +func SetConsoleCursorInfo(handle uintptr, cursorInfo *CONSOLE_CURSOR_INFO) error { + r1, r2, err := setConsoleCursorInfoProc.Call(handle, uintptr(unsafe.Pointer(cursorInfo)), 0) + return checkError(r1, r2, err) +} + +// SetConsoleCursorPosition location of the console cursor. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686025(v=vs.85).aspx. +func SetConsoleCursorPosition(handle uintptr, coord COORD) error { + r1, r2, err := setConsoleCursorPositionProc.Call(handle, coordToPointer(coord)) + use(coord) + return checkError(r1, r2, err) +} + +// GetConsoleMode gets the console mode for given file descriptor +// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683167(v=vs.85).aspx. +func GetConsoleMode(handle uintptr) (mode uint32, err error) { + err = syscall.GetConsoleMode(syscall.Handle(handle), &mode) + return mode, err +} + +// SetConsoleMode sets the console mode for given file descriptor +// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx. +func SetConsoleMode(handle uintptr, mode uint32) error { + r1, r2, err := setConsoleModeProc.Call(handle, uintptr(mode), 0) + use(mode) + return checkError(r1, r2, err) +} + +// GetConsoleScreenBufferInfo retrieves information about the specified console screen buffer. +// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683171(v=vs.85).aspx. +func GetConsoleScreenBufferInfo(handle uintptr) (*CONSOLE_SCREEN_BUFFER_INFO, error) { + info := CONSOLE_SCREEN_BUFFER_INFO{} + err := checkError(getConsoleScreenBufferInfoProc.Call(handle, uintptr(unsafe.Pointer(&info)), 0)) + if err != nil { + return nil, err + } + return &info, nil +} + +func ScrollConsoleScreenBuffer(handle uintptr, scrollRect SMALL_RECT, clipRect SMALL_RECT, destOrigin COORD, char CHAR_INFO) error { + r1, r2, err := scrollConsoleScreenBufferProc.Call(handle, uintptr(unsafe.Pointer(&scrollRect)), uintptr(unsafe.Pointer(&clipRect)), coordToPointer(destOrigin), uintptr(unsafe.Pointer(&char))) + use(scrollRect) + use(clipRect) + use(destOrigin) + use(char) + return checkError(r1, r2, err) +} + +// SetConsoleScreenBufferSize sets the size of the console screen buffer. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686044(v=vs.85).aspx. +func SetConsoleScreenBufferSize(handle uintptr, coord COORD) error { + r1, r2, err := setConsoleScreenBufferSizeProc.Call(handle, coordToPointer(coord)) + use(coord) + return checkError(r1, r2, err) +} + +// SetConsoleTextAttribute sets the attributes of characters written to the +// console screen buffer by the WriteFile or WriteConsole function. +// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686047(v=vs.85).aspx. +func SetConsoleTextAttribute(handle uintptr, attribute uint16) error { + r1, r2, err := setConsoleTextAttributeProc.Call(handle, uintptr(attribute), 0) + use(attribute) + return checkError(r1, r2, err) +} + +// SetConsoleWindowInfo sets the size and position of the console screen buffer's window. +// Note that the size and location must be within and no larger than the backing console screen buffer. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686125(v=vs.85).aspx. +func SetConsoleWindowInfo(handle uintptr, isAbsolute bool, rect SMALL_RECT) error { + r1, r2, err := setConsoleWindowInfoProc.Call(handle, uintptr(boolToBOOL(isAbsolute)), uintptr(unsafe.Pointer(&rect))) + use(isAbsolute) + use(rect) + return checkError(r1, r2, err) +} + +// WriteConsoleOutput writes the CHAR_INFOs from the provided buffer to the active console buffer. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms687404(v=vs.85).aspx. +func WriteConsoleOutput(handle uintptr, buffer []CHAR_INFO, bufferSize COORD, bufferCoord COORD, writeRegion *SMALL_RECT) error { + r1, r2, err := writeConsoleOutputProc.Call(handle, uintptr(unsafe.Pointer(&buffer[0])), coordToPointer(bufferSize), coordToPointer(bufferCoord), uintptr(unsafe.Pointer(writeRegion))) + use(buffer) + use(bufferSize) + use(bufferCoord) + return checkError(r1, r2, err) +} + +// ReadConsoleInput reads (and removes) data from the console input buffer. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms684961(v=vs.85).aspx. +func ReadConsoleInput(handle uintptr, buffer []INPUT_RECORD, count *uint32) error { + r1, r2, err := readConsoleInputProc.Call(handle, uintptr(unsafe.Pointer(&buffer[0])), uintptr(len(buffer)), uintptr(unsafe.Pointer(count))) + use(buffer) + return checkError(r1, r2, err) +} + +// WaitForSingleObject waits for the passed handle to be signaled. +// It returns true if the handle was signaled; false otherwise. +// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms687032(v=vs.85).aspx. +func WaitForSingleObject(handle uintptr, msWait uint32) (bool, error) { + r1, _, err := waitForSingleObjectProc.Call(handle, uintptr(uint32(msWait))) + switch r1 { + case WAIT_ABANDONED, WAIT_TIMEOUT: + return false, nil + case WAIT_SIGNALED: + return true, nil + } + use(msWait) + return false, err +} + +// String helpers +func (info CONSOLE_SCREEN_BUFFER_INFO) String() string { + return fmt.Sprintf("Size(%v) Cursor(%v) Window(%v) Max(%v)", info.Size, info.CursorPosition, info.Window, info.MaximumWindowSize) +} + +func (coord COORD) String() string { + return fmt.Sprintf("%v,%v", coord.X, coord.Y) +} + +func (rect SMALL_RECT) String() string { + return fmt.Sprintf("(%v,%v),(%v,%v)", rect.Left, rect.Top, rect.Right, rect.Bottom) +} + +// checkError evaluates the results of a Windows API call and returns the error if it failed. +func checkError(r1, r2 uintptr, err error) error { + // Windows APIs return non-zero to indicate success + if r1 != 0 { + return nil + } + + // Return the error if provided, otherwise default to EINVAL + if err != nil { + return err + } + return syscall.EINVAL +} + +// coordToPointer converts a COORD into a uintptr (by fooling the type system). +func coordToPointer(c COORD) uintptr { + // Note: This code assumes the two SHORTs are correctly laid out; the "cast" to uint32 is just to get a pointer to pass. + return uintptr(*((*uint32)(unsafe.Pointer(&c)))) +} + +// use is a no-op, but the compiler cannot see that it is. +// Calling use(p) ensures that p is kept live until that point. +func use(p interface{}) {} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/attr_translation.go b/vendor/github.com/Azure/go-ansiterm/winterm/attr_translation.go new file mode 100644 index 000000000..cbec8f728 --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/attr_translation.go @@ -0,0 +1,100 @@ +// +build windows + +package winterm + +import "github.com/Azure/go-ansiterm" + +const ( + FOREGROUND_COLOR_MASK = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE + BACKGROUND_COLOR_MASK = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE +) + +// collectAnsiIntoWindowsAttributes modifies the passed Windows text mode flags to reflect the +// request represented by the passed ANSI mode. +func collectAnsiIntoWindowsAttributes(windowsMode uint16, inverted bool, baseMode uint16, ansiMode int16) (uint16, bool) { + switch ansiMode { + + // Mode styles + case ansiterm.ANSI_SGR_BOLD: + windowsMode = windowsMode | FOREGROUND_INTENSITY + + case ansiterm.ANSI_SGR_DIM, ansiterm.ANSI_SGR_BOLD_DIM_OFF: + windowsMode &^= FOREGROUND_INTENSITY + + case ansiterm.ANSI_SGR_UNDERLINE: + windowsMode = windowsMode | COMMON_LVB_UNDERSCORE + + case ansiterm.ANSI_SGR_REVERSE: + inverted = true + + case ansiterm.ANSI_SGR_REVERSE_OFF: + inverted = false + + case ansiterm.ANSI_SGR_UNDERLINE_OFF: + windowsMode &^= COMMON_LVB_UNDERSCORE + + // Foreground colors + case ansiterm.ANSI_SGR_FOREGROUND_DEFAULT: + windowsMode = (windowsMode &^ FOREGROUND_MASK) | (baseMode & FOREGROUND_MASK) + + case ansiterm.ANSI_SGR_FOREGROUND_BLACK: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) + + case ansiterm.ANSI_SGR_FOREGROUND_RED: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED + + case ansiterm.ANSI_SGR_FOREGROUND_GREEN: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN + + case ansiterm.ANSI_SGR_FOREGROUND_YELLOW: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN + + case ansiterm.ANSI_SGR_FOREGROUND_BLUE: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_BLUE + + case ansiterm.ANSI_SGR_FOREGROUND_MAGENTA: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_BLUE + + case ansiterm.ANSI_SGR_FOREGROUND_CYAN: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN | FOREGROUND_BLUE + + case ansiterm.ANSI_SGR_FOREGROUND_WHITE: + windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE + + // Background colors + case ansiterm.ANSI_SGR_BACKGROUND_DEFAULT: + // Black with no intensity + windowsMode = (windowsMode &^ BACKGROUND_MASK) | (baseMode & BACKGROUND_MASK) + + case ansiterm.ANSI_SGR_BACKGROUND_BLACK: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) + + case ansiterm.ANSI_SGR_BACKGROUND_RED: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED + + case ansiterm.ANSI_SGR_BACKGROUND_GREEN: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN + + case ansiterm.ANSI_SGR_BACKGROUND_YELLOW: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN + + case ansiterm.ANSI_SGR_BACKGROUND_BLUE: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_BLUE + + case ansiterm.ANSI_SGR_BACKGROUND_MAGENTA: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_BLUE + + case ansiterm.ANSI_SGR_BACKGROUND_CYAN: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN | BACKGROUND_BLUE + + case ansiterm.ANSI_SGR_BACKGROUND_WHITE: + windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE + } + + return windowsMode, inverted +} + +// invertAttributes inverts the foreground and background colors of a Windows attributes value +func invertAttributes(windowsMode uint16) uint16 { + return (COMMON_LVB_MASK & windowsMode) | ((FOREGROUND_MASK & windowsMode) << 4) | ((BACKGROUND_MASK & windowsMode) >> 4) +} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/cursor_helpers.go b/vendor/github.com/Azure/go-ansiterm/winterm/cursor_helpers.go new file mode 100644 index 000000000..f015723ad --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/cursor_helpers.go @@ -0,0 +1,101 @@ +// +build windows + +package winterm + +const ( + horizontal = iota + vertical +) + +func (h *windowsAnsiEventHandler) getCursorWindow(info *CONSOLE_SCREEN_BUFFER_INFO) SMALL_RECT { + if h.originMode { + sr := h.effectiveSr(info.Window) + return SMALL_RECT{ + Top: sr.top, + Bottom: sr.bottom, + Left: 0, + Right: info.Size.X - 1, + } + } else { + return SMALL_RECT{ + Top: info.Window.Top, + Bottom: info.Window.Bottom, + Left: 0, + Right: info.Size.X - 1, + } + } +} + +// setCursorPosition sets the cursor to the specified position, bounded to the screen size +func (h *windowsAnsiEventHandler) setCursorPosition(position COORD, window SMALL_RECT) error { + position.X = ensureInRange(position.X, window.Left, window.Right) + position.Y = ensureInRange(position.Y, window.Top, window.Bottom) + err := SetConsoleCursorPosition(h.fd, position) + if err != nil { + return err + } + logger.Infof("Cursor position set: (%d, %d)", position.X, position.Y) + return err +} + +func (h *windowsAnsiEventHandler) moveCursorVertical(param int) error { + return h.moveCursor(vertical, param) +} + +func (h *windowsAnsiEventHandler) moveCursorHorizontal(param int) error { + return h.moveCursor(horizontal, param) +} + +func (h *windowsAnsiEventHandler) moveCursor(moveMode int, param int) error { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + position := info.CursorPosition + switch moveMode { + case horizontal: + position.X += int16(param) + case vertical: + position.Y += int16(param) + } + + if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil { + return err + } + + return nil +} + +func (h *windowsAnsiEventHandler) moveCursorLine(param int) error { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + position := info.CursorPosition + position.X = 0 + position.Y += int16(param) + + if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil { + return err + } + + return nil +} + +func (h *windowsAnsiEventHandler) moveCursorColumn(param int) error { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + position := info.CursorPosition + position.X = int16(param) - 1 + + if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil { + return err + } + + return nil +} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/erase_helpers.go b/vendor/github.com/Azure/go-ansiterm/winterm/erase_helpers.go new file mode 100644 index 000000000..244b5fa25 --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/erase_helpers.go @@ -0,0 +1,84 @@ +// +build windows + +package winterm + +import "github.com/Azure/go-ansiterm" + +func (h *windowsAnsiEventHandler) clearRange(attributes uint16, fromCoord COORD, toCoord COORD) error { + // Ignore an invalid (negative area) request + if toCoord.Y < fromCoord.Y { + return nil + } + + var err error + + var coordStart = COORD{} + var coordEnd = COORD{} + + xCurrent, yCurrent := fromCoord.X, fromCoord.Y + xEnd, yEnd := toCoord.X, toCoord.Y + + // Clear any partial initial line + if xCurrent > 0 { + coordStart.X, coordStart.Y = xCurrent, yCurrent + coordEnd.X, coordEnd.Y = xEnd, yCurrent + + err = h.clearRect(attributes, coordStart, coordEnd) + if err != nil { + return err + } + + xCurrent = 0 + yCurrent += 1 + } + + // Clear intervening rectangular section + if yCurrent < yEnd { + coordStart.X, coordStart.Y = xCurrent, yCurrent + coordEnd.X, coordEnd.Y = xEnd, yEnd-1 + + err = h.clearRect(attributes, coordStart, coordEnd) + if err != nil { + return err + } + + xCurrent = 0 + yCurrent = yEnd + } + + // Clear remaining partial ending line + coordStart.X, coordStart.Y = xCurrent, yCurrent + coordEnd.X, coordEnd.Y = xEnd, yEnd + + err = h.clearRect(attributes, coordStart, coordEnd) + if err != nil { + return err + } + + return nil +} + +func (h *windowsAnsiEventHandler) clearRect(attributes uint16, fromCoord COORD, toCoord COORD) error { + region := SMALL_RECT{Top: fromCoord.Y, Left: fromCoord.X, Bottom: toCoord.Y, Right: toCoord.X} + width := toCoord.X - fromCoord.X + 1 + height := toCoord.Y - fromCoord.Y + 1 + size := uint32(width) * uint32(height) + + if size <= 0 { + return nil + } + + buffer := make([]CHAR_INFO, size) + + char := CHAR_INFO{ansiterm.FILL_CHARACTER, attributes} + for i := 0; i < int(size); i++ { + buffer[i] = char + } + + err := WriteConsoleOutput(h.fd, buffer, COORD{X: width, Y: height}, COORD{X: 0, Y: 0}, ®ion) + if err != nil { + return err + } + + return nil +} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/scroll_helper.go b/vendor/github.com/Azure/go-ansiterm/winterm/scroll_helper.go new file mode 100644 index 000000000..706d27057 --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/scroll_helper.go @@ -0,0 +1,118 @@ +// +build windows + +package winterm + +// effectiveSr gets the current effective scroll region in buffer coordinates +func (h *windowsAnsiEventHandler) effectiveSr(window SMALL_RECT) scrollRegion { + top := addInRange(window.Top, h.sr.top, window.Top, window.Bottom) + bottom := addInRange(window.Top, h.sr.bottom, window.Top, window.Bottom) + if top >= bottom { + top = window.Top + bottom = window.Bottom + } + return scrollRegion{top: top, bottom: bottom} +} + +func (h *windowsAnsiEventHandler) scrollUp(param int) error { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + sr := h.effectiveSr(info.Window) + return h.scroll(param, sr, info) +} + +func (h *windowsAnsiEventHandler) scrollDown(param int) error { + return h.scrollUp(-param) +} + +func (h *windowsAnsiEventHandler) deleteLines(param int) error { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + start := info.CursorPosition.Y + sr := h.effectiveSr(info.Window) + // Lines cannot be inserted or deleted outside the scrolling region. + if start >= sr.top && start <= sr.bottom { + sr.top = start + return h.scroll(param, sr, info) + } else { + return nil + } +} + +func (h *windowsAnsiEventHandler) insertLines(param int) error { + return h.deleteLines(-param) +} + +// scroll scrolls the provided scroll region by param lines. The scroll region is in buffer coordinates. +func (h *windowsAnsiEventHandler) scroll(param int, sr scrollRegion, info *CONSOLE_SCREEN_BUFFER_INFO) error { + logger.Infof("scroll: scrollTop: %d, scrollBottom: %d", sr.top, sr.bottom) + logger.Infof("scroll: windowTop: %d, windowBottom: %d", info.Window.Top, info.Window.Bottom) + + // Copy from and clip to the scroll region (full buffer width) + scrollRect := SMALL_RECT{ + Top: sr.top, + Bottom: sr.bottom, + Left: 0, + Right: info.Size.X - 1, + } + + // Origin to which area should be copied + destOrigin := COORD{ + X: 0, + Y: sr.top - int16(param), + } + + char := CHAR_INFO{ + UnicodeChar: ' ', + Attributes: h.attributes, + } + + if err := ScrollConsoleScreenBuffer(h.fd, scrollRect, scrollRect, destOrigin, char); err != nil { + return err + } + return nil +} + +func (h *windowsAnsiEventHandler) deleteCharacters(param int) error { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + return h.scrollLine(param, info.CursorPosition, info) +} + +func (h *windowsAnsiEventHandler) insertCharacters(param int) error { + return h.deleteCharacters(-param) +} + +// scrollLine scrolls a line horizontally starting at the provided position by a number of columns. +func (h *windowsAnsiEventHandler) scrollLine(columns int, position COORD, info *CONSOLE_SCREEN_BUFFER_INFO) error { + // Copy from and clip to the scroll region (full buffer width) + scrollRect := SMALL_RECT{ + Top: position.Y, + Bottom: position.Y, + Left: position.X, + Right: info.Size.X - 1, + } + + // Origin to which area should be copied + destOrigin := COORD{ + X: position.X - int16(columns), + Y: position.Y, + } + + char := CHAR_INFO{ + UnicodeChar: ' ', + Attributes: h.attributes, + } + + if err := ScrollConsoleScreenBuffer(h.fd, scrollRect, scrollRect, destOrigin, char); err != nil { + return err + } + return nil +} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/utilities.go b/vendor/github.com/Azure/go-ansiterm/winterm/utilities.go new file mode 100644 index 000000000..afa7635d7 --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/utilities.go @@ -0,0 +1,9 @@ +// +build windows + +package winterm + +// AddInRange increments a value by the passed quantity while ensuring the values +// always remain within the supplied min / max range. +func addInRange(n int16, increment int16, min int16, max int16) int16 { + return ensureInRange(n+increment, min, max) +} diff --git a/vendor/github.com/Azure/go-ansiterm/winterm/win_event_handler.go b/vendor/github.com/Azure/go-ansiterm/winterm/win_event_handler.go new file mode 100644 index 000000000..48998bb05 --- /dev/null +++ b/vendor/github.com/Azure/go-ansiterm/winterm/win_event_handler.go @@ -0,0 +1,726 @@ +// +build windows + +package winterm + +import ( + "bytes" + "io/ioutil" + "os" + "strconv" + + "github.com/Azure/go-ansiterm" + "github.com/sirupsen/logrus" +) + +var logger *logrus.Logger + +type windowsAnsiEventHandler struct { + fd uintptr + file *os.File + infoReset *CONSOLE_SCREEN_BUFFER_INFO + sr scrollRegion + buffer bytes.Buffer + attributes uint16 + inverted bool + wrapNext bool + drewMarginByte bool + originMode bool + marginByte byte + curInfo *CONSOLE_SCREEN_BUFFER_INFO + curPos COORD +} + +func CreateWinEventHandler(fd uintptr, file *os.File) ansiterm.AnsiEventHandler { + logFile := ioutil.Discard + + if isDebugEnv := os.Getenv(ansiterm.LogEnv); isDebugEnv == "1" { + logFile, _ = os.Create("winEventHandler.log") + } + + logger = &logrus.Logger{ + Out: logFile, + Formatter: new(logrus.TextFormatter), + Level: logrus.DebugLevel, + } + + infoReset, err := GetConsoleScreenBufferInfo(fd) + if err != nil { + return nil + } + + return &windowsAnsiEventHandler{ + fd: fd, + file: file, + infoReset: infoReset, + attributes: infoReset.Attributes, + } +} + +type scrollRegion struct { + top int16 + bottom int16 +} + +// simulateLF simulates a LF or CR+LF by scrolling if necessary to handle the +// current cursor position and scroll region settings, in which case it returns +// true. If no special handling is necessary, then it does nothing and returns +// false. +// +// In the false case, the caller should ensure that a carriage return +// and line feed are inserted or that the text is otherwise wrapped. +func (h *windowsAnsiEventHandler) simulateLF(includeCR bool) (bool, error) { + if h.wrapNext { + if err := h.Flush(); err != nil { + return false, err + } + h.clearWrap() + } + pos, info, err := h.getCurrentInfo() + if err != nil { + return false, err + } + sr := h.effectiveSr(info.Window) + if pos.Y == sr.bottom { + // Scrolling is necessary. Let Windows automatically scroll if the scrolling region + // is the full window. + if sr.top == info.Window.Top && sr.bottom == info.Window.Bottom { + if includeCR { + pos.X = 0 + h.updatePos(pos) + } + return false, nil + } + + // A custom scroll region is active. Scroll the window manually to simulate + // the LF. + if err := h.Flush(); err != nil { + return false, err + } + logger.Info("Simulating LF inside scroll region") + if err := h.scrollUp(1); err != nil { + return false, err + } + if includeCR { + pos.X = 0 + if err := SetConsoleCursorPosition(h.fd, pos); err != nil { + return false, err + } + } + return true, nil + + } else if pos.Y < info.Window.Bottom { + // Let Windows handle the LF. + pos.Y++ + if includeCR { + pos.X = 0 + } + h.updatePos(pos) + return false, nil + } else { + // The cursor is at the bottom of the screen but outside the scroll + // region. Skip the LF. + logger.Info("Simulating LF outside scroll region") + if includeCR { + if err := h.Flush(); err != nil { + return false, err + } + pos.X = 0 + if err := SetConsoleCursorPosition(h.fd, pos); err != nil { + return false, err + } + } + return true, nil + } +} + +// executeLF executes a LF without a CR. +func (h *windowsAnsiEventHandler) executeLF() error { + handled, err := h.simulateLF(false) + if err != nil { + return err + } + if !handled { + // Windows LF will reset the cursor column position. Write the LF + // and restore the cursor position. + pos, _, err := h.getCurrentInfo() + if err != nil { + return err + } + h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED) + if pos.X != 0 { + if err := h.Flush(); err != nil { + return err + } + logger.Info("Resetting cursor position for LF without CR") + if err := SetConsoleCursorPosition(h.fd, pos); err != nil { + return err + } + } + } + return nil +} + +func (h *windowsAnsiEventHandler) Print(b byte) error { + if h.wrapNext { + h.buffer.WriteByte(h.marginByte) + h.clearWrap() + if _, err := h.simulateLF(true); err != nil { + return err + } + } + pos, info, err := h.getCurrentInfo() + if err != nil { + return err + } + if pos.X == info.Size.X-1 { + h.wrapNext = true + h.marginByte = b + } else { + pos.X++ + h.updatePos(pos) + h.buffer.WriteByte(b) + } + return nil +} + +func (h *windowsAnsiEventHandler) Execute(b byte) error { + switch b { + case ansiterm.ANSI_TAB: + logger.Info("Execute(TAB)") + // Move to the next tab stop, but preserve auto-wrap if already set. + if !h.wrapNext { + pos, info, err := h.getCurrentInfo() + if err != nil { + return err + } + pos.X = (pos.X + 8) - pos.X%8 + if pos.X >= info.Size.X { + pos.X = info.Size.X - 1 + } + if err := h.Flush(); err != nil { + return err + } + if err := SetConsoleCursorPosition(h.fd, pos); err != nil { + return err + } + } + return nil + + case ansiterm.ANSI_BEL: + h.buffer.WriteByte(ansiterm.ANSI_BEL) + return nil + + case ansiterm.ANSI_BACKSPACE: + if h.wrapNext { + if err := h.Flush(); err != nil { + return err + } + h.clearWrap() + } + pos, _, err := h.getCurrentInfo() + if err != nil { + return err + } + if pos.X > 0 { + pos.X-- + h.updatePos(pos) + h.buffer.WriteByte(ansiterm.ANSI_BACKSPACE) + } + return nil + + case ansiterm.ANSI_VERTICAL_TAB, ansiterm.ANSI_FORM_FEED: + // Treat as true LF. + return h.executeLF() + + case ansiterm.ANSI_LINE_FEED: + // Simulate a CR and LF for now since there is no way in go-ansiterm + // to tell if the LF should include CR (and more things break when it's + // missing than when it's incorrectly added). + handled, err := h.simulateLF(true) + if handled || err != nil { + return err + } + return h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED) + + case ansiterm.ANSI_CARRIAGE_RETURN: + if h.wrapNext { + if err := h.Flush(); err != nil { + return err + } + h.clearWrap() + } + pos, _, err := h.getCurrentInfo() + if err != nil { + return err + } + if pos.X != 0 { + pos.X = 0 + h.updatePos(pos) + h.buffer.WriteByte(ansiterm.ANSI_CARRIAGE_RETURN) + } + return nil + + default: + return nil + } +} + +func (h *windowsAnsiEventHandler) CUU(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CUU: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorVertical(-param) +} + +func (h *windowsAnsiEventHandler) CUD(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CUD: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorVertical(param) +} + +func (h *windowsAnsiEventHandler) CUF(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CUF: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorHorizontal(param) +} + +func (h *windowsAnsiEventHandler) CUB(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CUB: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorHorizontal(-param) +} + +func (h *windowsAnsiEventHandler) CNL(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CNL: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorLine(param) +} + +func (h *windowsAnsiEventHandler) CPL(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CPL: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorLine(-param) +} + +func (h *windowsAnsiEventHandler) CHA(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CHA: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.moveCursorColumn(param) +} + +func (h *windowsAnsiEventHandler) VPA(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("VPA: [[%d]]", param) + h.clearWrap() + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + window := h.getCursorWindow(info) + position := info.CursorPosition + position.Y = window.Top + int16(param) - 1 + return h.setCursorPosition(position, window) +} + +func (h *windowsAnsiEventHandler) CUP(row int, col int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("CUP: [[%d %d]]", row, col) + h.clearWrap() + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + window := h.getCursorWindow(info) + position := COORD{window.Left + int16(col) - 1, window.Top + int16(row) - 1} + return h.setCursorPosition(position, window) +} + +func (h *windowsAnsiEventHandler) HVP(row int, col int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("HVP: [[%d %d]]", row, col) + h.clearWrap() + return h.CUP(row, col) +} + +func (h *windowsAnsiEventHandler) DECTCEM(visible bool) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("DECTCEM: [%v]", []string{strconv.FormatBool(visible)}) + h.clearWrap() + return nil +} + +func (h *windowsAnsiEventHandler) DECOM(enable bool) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("DECOM: [%v]", []string{strconv.FormatBool(enable)}) + h.clearWrap() + h.originMode = enable + return h.CUP(1, 1) +} + +func (h *windowsAnsiEventHandler) DECCOLM(use132 bool) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("DECCOLM: [%v]", []string{strconv.FormatBool(use132)}) + h.clearWrap() + if err := h.ED(2); err != nil { + return err + } + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + targetWidth := int16(80) + if use132 { + targetWidth = 132 + } + if info.Size.X < targetWidth { + if err := SetConsoleScreenBufferSize(h.fd, COORD{targetWidth, info.Size.Y}); err != nil { + logger.Info("set buffer failed:", err) + return err + } + } + window := info.Window + window.Left = 0 + window.Right = targetWidth - 1 + if err := SetConsoleWindowInfo(h.fd, true, window); err != nil { + logger.Info("set window failed:", err) + return err + } + if info.Size.X > targetWidth { + if err := SetConsoleScreenBufferSize(h.fd, COORD{targetWidth, info.Size.Y}); err != nil { + logger.Info("set buffer failed:", err) + return err + } + } + return SetConsoleCursorPosition(h.fd, COORD{0, 0}) +} + +func (h *windowsAnsiEventHandler) ED(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("ED: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + + // [J -- Erases from the cursor to the end of the screen, including the cursor position. + // [1J -- Erases from the beginning of the screen to the cursor, including the cursor position. + // [2J -- Erases the complete display. The cursor does not move. + // Notes: + // -- Clearing the entire buffer, versus just the Window, works best for Windows Consoles + + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + var start COORD + var end COORD + + switch param { + case 0: + start = info.CursorPosition + end = COORD{info.Size.X - 1, info.Size.Y - 1} + + case 1: + start = COORD{0, 0} + end = info.CursorPosition + + case 2: + start = COORD{0, 0} + end = COORD{info.Size.X - 1, info.Size.Y - 1} + } + + err = h.clearRange(h.attributes, start, end) + if err != nil { + return err + } + + // If the whole buffer was cleared, move the window to the top while preserving + // the window-relative cursor position. + if param == 2 { + pos := info.CursorPosition + window := info.Window + pos.Y -= window.Top + window.Bottom -= window.Top + window.Top = 0 + if err := SetConsoleCursorPosition(h.fd, pos); err != nil { + return err + } + if err := SetConsoleWindowInfo(h.fd, true, window); err != nil { + return err + } + } + + return nil +} + +func (h *windowsAnsiEventHandler) EL(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("EL: [%v]", strconv.Itoa(param)) + h.clearWrap() + + // [K -- Erases from the cursor to the end of the line, including the cursor position. + // [1K -- Erases from the beginning of the line to the cursor, including the cursor position. + // [2K -- Erases the complete line. + + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + var start COORD + var end COORD + + switch param { + case 0: + start = info.CursorPosition + end = COORD{info.Size.X, info.CursorPosition.Y} + + case 1: + start = COORD{0, info.CursorPosition.Y} + end = info.CursorPosition + + case 2: + start = COORD{0, info.CursorPosition.Y} + end = COORD{info.Size.X, info.CursorPosition.Y} + } + + err = h.clearRange(h.attributes, start, end) + if err != nil { + return err + } + + return nil +} + +func (h *windowsAnsiEventHandler) IL(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("IL: [%v]", strconv.Itoa(param)) + h.clearWrap() + return h.insertLines(param) +} + +func (h *windowsAnsiEventHandler) DL(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("DL: [%v]", strconv.Itoa(param)) + h.clearWrap() + return h.deleteLines(param) +} + +func (h *windowsAnsiEventHandler) ICH(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("ICH: [%v]", strconv.Itoa(param)) + h.clearWrap() + return h.insertCharacters(param) +} + +func (h *windowsAnsiEventHandler) DCH(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("DCH: [%v]", strconv.Itoa(param)) + h.clearWrap() + return h.deleteCharacters(param) +} + +func (h *windowsAnsiEventHandler) SGR(params []int) error { + if err := h.Flush(); err != nil { + return err + } + strings := []string{} + for _, v := range params { + strings = append(strings, strconv.Itoa(v)) + } + + logger.Infof("SGR: [%v]", strings) + + if len(params) <= 0 { + h.attributes = h.infoReset.Attributes + h.inverted = false + } else { + for _, attr := range params { + + if attr == ansiterm.ANSI_SGR_RESET { + h.attributes = h.infoReset.Attributes + h.inverted = false + continue + } + + h.attributes, h.inverted = collectAnsiIntoWindowsAttributes(h.attributes, h.inverted, h.infoReset.Attributes, int16(attr)) + } + } + + attributes := h.attributes + if h.inverted { + attributes = invertAttributes(attributes) + } + err := SetConsoleTextAttribute(h.fd, attributes) + if err != nil { + return err + } + + return nil +} + +func (h *windowsAnsiEventHandler) SU(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("SU: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.scrollUp(param) +} + +func (h *windowsAnsiEventHandler) SD(param int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("SD: [%v]", []string{strconv.Itoa(param)}) + h.clearWrap() + return h.scrollDown(param) +} + +func (h *windowsAnsiEventHandler) DA(params []string) error { + logger.Infof("DA: [%v]", params) + // DA cannot be implemented because it must send data on the VT100 input stream, + // which is not available to go-ansiterm. + return nil +} + +func (h *windowsAnsiEventHandler) DECSTBM(top int, bottom int) error { + if err := h.Flush(); err != nil { + return err + } + logger.Infof("DECSTBM: [%d, %d]", top, bottom) + + // Windows is 0 indexed, Linux is 1 indexed + h.sr.top = int16(top - 1) + h.sr.bottom = int16(bottom - 1) + + // This command also moves the cursor to the origin. + h.clearWrap() + return h.CUP(1, 1) +} + +func (h *windowsAnsiEventHandler) RI() error { + if err := h.Flush(); err != nil { + return err + } + logger.Info("RI: []") + h.clearWrap() + + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + sr := h.effectiveSr(info.Window) + if info.CursorPosition.Y == sr.top { + return h.scrollDown(1) + } + + return h.moveCursorVertical(-1) +} + +func (h *windowsAnsiEventHandler) IND() error { + logger.Info("IND: []") + return h.executeLF() +} + +func (h *windowsAnsiEventHandler) Flush() error { + h.curInfo = nil + if h.buffer.Len() > 0 { + logger.Infof("Flush: [%s]", h.buffer.Bytes()) + if _, err := h.buffer.WriteTo(h.file); err != nil { + return err + } + } + + if h.wrapNext && !h.drewMarginByte { + logger.Infof("Flush: drawing margin byte '%c'", h.marginByte) + + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return err + } + + charInfo := []CHAR_INFO{{UnicodeChar: uint16(h.marginByte), Attributes: info.Attributes}} + size := COORD{1, 1} + position := COORD{0, 0} + region := SMALL_RECT{Left: info.CursorPosition.X, Top: info.CursorPosition.Y, Right: info.CursorPosition.X, Bottom: info.CursorPosition.Y} + if err := WriteConsoleOutput(h.fd, charInfo, size, position, ®ion); err != nil { + return err + } + h.drewMarginByte = true + } + return nil +} + +// cacheConsoleInfo ensures that the current console screen information has been queried +// since the last call to Flush(). It must be called before accessing h.curInfo or h.curPos. +func (h *windowsAnsiEventHandler) getCurrentInfo() (COORD, *CONSOLE_SCREEN_BUFFER_INFO, error) { + if h.curInfo == nil { + info, err := GetConsoleScreenBufferInfo(h.fd) + if err != nil { + return COORD{}, nil, err + } + h.curInfo = info + h.curPos = info.CursorPosition + } + return h.curPos, h.curInfo, nil +} + +func (h *windowsAnsiEventHandler) updatePos(pos COORD) { + if h.curInfo == nil { + panic("failed to call getCurrentInfo before calling updatePos") + } + h.curPos = pos +} + +// clearWrap clears the state where the cursor is in the margin +// waiting for the next character before wrapping the line. This must +// be done before most operations that act on the cursor. +func (h *windowsAnsiEventHandler) clearWrap() { + h.wrapNext = false + h.drewMarginByte = false +} |