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Colorize diagnostics.

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This commit is contained in:
Kugel Fuhr
2025-07-07 16:47:36 +02:00
parent ffcff0fa61
commit b1eb1bf6ab
6 changed files with 473 additions and 34 deletions
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208
src/common/consprop.c Normal file
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/*****************************************************************************/
/* */
/* consprop.c */
/* */
/* Console properties */
/* */
/* */
/* */
/* (C) 2025, Kugelfuhr */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <stdlib.h>
#include <unistd.h>
#ifdef _WIN32
#include <windows.h>
#define isatty _isatty
#endif
/* common */
#include "consprop.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
#ifdef _WIN32
static unsigned CodePage; /* Windows code page on startup */
#endif
/* State variables */
static int IsTTY = 1; /* True if console is a tty */
static int IsUTF8 = 1; /* True if console is in UTF-8 mode */
static int Color = 0; /* True if we should use color */
static ColorMode CMode = CM_AUTO; /* Current color mode */
/* ANSI escape sequences for color */
const char CP_ColorSeq[CC_COUNT][2][8] = {
{ "", "\x1b[30m", }, /* Black */
{ "", "\x1b[31m", }, /* Red */
{ "", "\x1b[32m", }, /* Green */
{ "", "\x1b[33m", }, /* Brown */
{ "", "\x1b[34m", }, /* Blue */
{ "", "\x1b[35m", }, /* Magenta */
{ "", "\x1b[36m", }, /* Cyan */
{ "", "\x1b[37m", }, /* LightGray */
{ "", "\x1b[90m", }, /* Gray */
{ "", "\x1b[91m", }, /* BrightRed */
{ "", "\x1b[92m", }, /* BrightGreen */
{ "", "\x1b[93m", }, /* Yellow */
{ "", "\x1b[94m", }, /* BrightBlue */
{ "", "\x1b[95m", }, /* BrightMagenta */
{ "", "\x1b[96m", }, /* BrightCyan */
{ "", "\x1b[97m", }, /* White */
};
/* Box drawing sequences */
const char CP_BoxDrawingSeq[BD_COUNT][2][4] = {
{ "-", "\xE2\x94\x80", }, /* "─" - Horizontal */
{ "|", "\xE2\x94\x82", }, /* "│" - Vertical */
{ "+", "\xE2\x94\x8C", }, /* "┌" - ULCorner */
{ "+", "\xE2\x94\x94", }, /* "└" - LLCorner */
{ "+", "\xE2\x94\x90", }, /* "┐" - URCorner */
{ "+", "\xE2\x94\x98", }, /* "┘" - LRCorner */
{ "+", "\xE2\x94\x9C", }, /* "├" - VerticalRight */
{ "+", "\xE2\x94\xA4", }, /* "┤" - VerticalLeft */
{ "+", "\xE2\x94\xAC", }, /* "┬" - HorizontalDown */
{ "+", "\xE2\x94\xB4", }, /* "┴" - HorizontalUp */
};
/*****************************************************************************/
/* Helpers */
/*****************************************************************************/
#ifdef _WIN32
static void Cleanup()
/* Cleanup on program exit */
{
SetConsoleOutputCP (CodePage);
}
#endif
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void CP_Init (void)
/* Init console properties. Must be called before using any other function or
** data from this module.
*/
{
IsTTY = (isatty (STDOUT_FILENO) && isatty (STDERR_FILENO));
CP_SetColorMode (CMode);
#ifdef _WIN32
if (IsTTY) {
CodePage = GetConsoleOutputCP ();
if (SetConsoleOutputCP (CP_UTF8)) {
IsUTF8 = 1;
atexit (Cleanup);
}
if (Color) {
HANDLE StdOut = GetStdHandle (STD_OUTPUT_HANDLE);
if (StdOut != INVALID_HANDLE_VALUE) {
DWORD Mode;
if (GetConsoleMode (StdOut, &Mode)) {
Mode |= ENABLE_PROCESSED_OUTPUT |
ENABLE_VIRTUAL_TERMINAL_PROCESSING;
SetConsoleMode (StdOut, Mode);
}
}
}
}
#endif
}
int CP_IsTTY (void)
/* Return true if console output goes to a tty */
{
return IsTTY;
}
int CP_IsUTF8 (void)
/* Return true if the console supports UTF-8 */
{
return IsUTF8;
}
int CP_HasColor (void)
/* Return true if the console supports color and it should be used */
{
return Color;
}
ColorMode CP_GetColorMode (void)
/* Return the current color mode */
{
return CMode;
}
void CP_SetColorMode (ColorMode M)
/* Set the color mode */
{
CMode = M;
switch (CMode) {
case CM_AUTO: Color = IsTTY; break;
case CM_ON: Color = 1; break;
default: Color = 0; break;
}
}
void CP_DisableUTF8 (void)
/* Disable UTF-8 support */
{
IsUTF8 = 0;
}
void CP_EnableUTF8 (void)
/* Enable UTF-8 support */
{
IsUTF8 = 1;
}