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[raw_ostream] When printing color on Windows, use correct bg color.

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When using SetConsoleTextAttribute() to set the foreground or
background color, if you don't explicitly set both colors, then
a default value of black will be chosen for whichever you don't
specify a value for.

This is annoying when you have a non default console background
color, for example, and you try to set the foreground color.

This patch gets the existing fg/bg color and when you set one
attribute, sets the opposite attribute to its existing color
prior to comitting the update.

Reviewed by: Aaron Ballman
Differential Revision: http://reviews.llvm.org/D7967

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230859 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zachary Turner 2015-02-28 19:08:27 +00:00
parent ae27891f8e
commit a0a46d1595
1 changed files with 13 additions and 0 deletions
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13
lib/Support/Windows/Process.inc
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@ -329,6 +329,16 @@ class DefaultColors
};
DefaultColors defaultColors;
WORD fg_color(WORD color) {
return color & (FOREGROUND_BLUE | FOREGROUND_GREEN |
FOREGROUND_INTENSITY | FOREGROUND_RED);
}
WORD bg_color(WORD color) {
return color & (BACKGROUND_BLUE | BACKGROUND_GREEN |
BACKGROUND_INTENSITY | BACKGROUND_RED);
}
}
bool Process::ColorNeedsFlush() {
@ -350,6 +360,7 @@ const char *Process::OutputBold(bool bg) {
const char *Process::OutputColor(char code, bool bold, bool bg) {
if (UseANSI) return colorcodes[bg?1:0][bold?1:0][code&7];
WORD current = DefaultColors::GetCurrentColor();
WORD colors;
if (bg) {
colors = ((code&1) ? BACKGROUND_RED : 0) |
@ -357,12 +368,14 @@ const char *Process::OutputColor(char code, bool bold, bool bg) {
((code&4) ? BACKGROUND_BLUE : 0);
if (bold)
colors |= BACKGROUND_INTENSITY;
colors |= fg_color(current);
} else {
colors = ((code&1) ? FOREGROUND_RED : 0) |
((code&2) ? FOREGROUND_GREEN : 0 ) |
((code&4) ? FOREGROUND_BLUE : 0);
if (bold)
colors |= FOREGROUND_INTENSITY;
colors |= bg_color(current);
}
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), colors);
return 0;