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attr_translation.go
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attr_translation.go
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// +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 WORD, inverted bool, baseMode WORD, ansiMode SHORT) (WORD, bool) {
switch ansiMode {
// Mode styles
case ANSI_SGR_BOLD:
windowsMode = windowsMode | FOREGROUND_INTENSITY
case ANSI_SGR_DIM, ANSI_SGR_BOLD_DIM_OFF:
windowsMode &^= FOREGROUND_INTENSITY
case ANSI_SGR_UNDERLINE:
windowsMode = windowsMode | COMMON_LVB_UNDERSCORE
case ANSI_SGR_REVERSE:
inverted = true
case ANSI_SGR_REVERSE_OFF:
inverted = false
case ANSI_SGR_UNDERLINE_OFF:
windowsMode &^= COMMON_LVB_UNDERSCORE
// Foreground colors
case ANSI_SGR_FOREGROUND_DEFAULT:
windowsMode = (windowsMode &^ FOREGROUND_MASK) | (baseMode & FOREGROUND_MASK)
case ANSI_SGR_FOREGROUND_BLACK:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK)
case ANSI_SGR_FOREGROUND_RED:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED
case ANSI_SGR_FOREGROUND_GREEN:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN
case ANSI_SGR_FOREGROUND_YELLOW:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN
case ANSI_SGR_FOREGROUND_BLUE:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_BLUE
case ANSI_SGR_FOREGROUND_MAGENTA:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_BLUE
case ANSI_SGR_FOREGROUND_CYAN:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN | FOREGROUND_BLUE
case ANSI_SGR_FOREGROUND_WHITE:
windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
// Background colors
case ANSI_SGR_BACKGROUND_DEFAULT:
// Black with no intensity
windowsMode = (windowsMode &^ BACKGROUND_MASK) | (baseMode & BACKGROUND_MASK)
case ANSI_SGR_BACKGROUND_BLACK:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK)
case ANSI_SGR_BACKGROUND_RED:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED
case ANSI_SGR_BACKGROUND_GREEN:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN
case ANSI_SGR_BACKGROUND_YELLOW:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN
case ANSI_SGR_BACKGROUND_BLUE:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_BLUE
case ANSI_SGR_BACKGROUND_MAGENTA:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_BLUE
case ANSI_SGR_BACKGROUND_CYAN:
windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN | BACKGROUND_BLUE
case 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 WORD) WORD {
return (COMMON_LVB_MASK & windowsMode) | ((FOREGROUND_MASK & windowsMode) << 4) | ((BACKGROUND_MASK & windowsMode) >> 4)
}