attr_translation.go

Documentation: github.com/Azure/go-ansiterm/winterm

     1  // +build windows
     2  
     3  package winterm
     4  
     5  import "github.com/Azure/go-ansiterm"
     6  
     7  const (
     8  	FOREGROUND_COLOR_MASK = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
     9  	BACKGROUND_COLOR_MASK = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
    10  )
    11  
    12  // collectAnsiIntoWindowsAttributes modifies the passed Windows text mode flags to reflect the
    13  // request represented by the passed ANSI mode.
    14  func collectAnsiIntoWindowsAttributes(windowsMode uint16, inverted bool, baseMode uint16, ansiMode int16) (uint16, bool) {
    15  	switch ansiMode {
    16  
    17  	// Mode styles
    18  	case ansiterm.ANSI_SGR_BOLD:
    19  		windowsMode = windowsMode | FOREGROUND_INTENSITY
    20  
    21  	case ansiterm.ANSI_SGR_DIM, ansiterm.ANSI_SGR_BOLD_DIM_OFF:
    22  		windowsMode &^= FOREGROUND_INTENSITY
    23  
    24  	case ansiterm.ANSI_SGR_UNDERLINE:
    25  		windowsMode = windowsMode | COMMON_LVB_UNDERSCORE
    26  
    27  	case ansiterm.ANSI_SGR_REVERSE:
    28  		inverted = true
    29  
    30  	case ansiterm.ANSI_SGR_REVERSE_OFF:
    31  		inverted = false
    32  
    33  	case ansiterm.ANSI_SGR_UNDERLINE_OFF:
    34  		windowsMode &^= COMMON_LVB_UNDERSCORE
    35  
    36  		// Foreground colors
    37  	case ansiterm.ANSI_SGR_FOREGROUND_DEFAULT:
    38  		windowsMode = (windowsMode &^ FOREGROUND_MASK) | (baseMode & FOREGROUND_MASK)
    39  
    40  	case ansiterm.ANSI_SGR_FOREGROUND_BLACK:
    41  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK)
    42  
    43  	case ansiterm.ANSI_SGR_FOREGROUND_RED:
    44  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED
    45  
    46  	case ansiterm.ANSI_SGR_FOREGROUND_GREEN:
    47  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN
    48  
    49  	case ansiterm.ANSI_SGR_FOREGROUND_YELLOW:
    50  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN
    51  
    52  	case ansiterm.ANSI_SGR_FOREGROUND_BLUE:
    53  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_BLUE
    54  
    55  	case ansiterm.ANSI_SGR_FOREGROUND_MAGENTA:
    56  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_BLUE
    57  
    58  	case ansiterm.ANSI_SGR_FOREGROUND_CYAN:
    59  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN | FOREGROUND_BLUE
    60  
    61  	case ansiterm.ANSI_SGR_FOREGROUND_WHITE:
    62  		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
    63  
    64  		// Background colors
    65  	case ansiterm.ANSI_SGR_BACKGROUND_DEFAULT:
    66  		// Black with no intensity
    67  		windowsMode = (windowsMode &^ BACKGROUND_MASK) | (baseMode & BACKGROUND_MASK)
    68  
    69  	case ansiterm.ANSI_SGR_BACKGROUND_BLACK:
    70  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK)
    71  
    72  	case ansiterm.ANSI_SGR_BACKGROUND_RED:
    73  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED
    74  
    75  	case ansiterm.ANSI_SGR_BACKGROUND_GREEN:
    76  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN
    77  
    78  	case ansiterm.ANSI_SGR_BACKGROUND_YELLOW:
    79  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN
    80  
    81  	case ansiterm.ANSI_SGR_BACKGROUND_BLUE:
    82  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_BLUE
    83  
    84  	case ansiterm.ANSI_SGR_BACKGROUND_MAGENTA:
    85  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_BLUE
    86  
    87  	case ansiterm.ANSI_SGR_BACKGROUND_CYAN:
    88  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN | BACKGROUND_BLUE
    89  
    90  	case ansiterm.ANSI_SGR_BACKGROUND_WHITE:
    91  		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
    92  	}
    93  
    94  	return windowsMode, inverted
    95  }
    96  
    97  // invertAttributes inverts the foreground and background colors of a Windows attributes value
    98  func invertAttributes(windowsMode uint16) uint16 {
    99  	return (COMMON_LVB_MASK & windowsMode) | ((FOREGROUND_MASK & windowsMode) << 4) | ((BACKGROUND_MASK & windowsMode) >> 4)
   100  }
   101
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