color.h

#ifndef _COLOR_H
#define _COLOR_H

// avp 2014 VERY simple color.h
//   (не восстанавливает экран при завершении по сигналу)
//   (does not restore the screen when terminating by signal)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>

#define SCOLOR_RESET      "\033[0m"
#define SCOLOR_BOLD       "\033[1m"
#define SCOLOR_UNDER      "\033[4m"
#define SCOLOR_INVERS     "\033[7m"
#define SCOLOR_NORMAL     "\033[30m"
#define SCOLOR_BLACK      "\033[30m"
#define SCOLOR_RED        "\033[31m"
#define SCOLOR_GREEN      "\033[32m"
#define SCOLOR_BROWN      "\033[33m"
#define SCOLOR_BLUE       "\033[34m"
#define SCOLOR_MAGENTA    "\033[35m"
#define SCOLOR_CYAN       "\033[36m"
#define SCOLOR_LIGHT      "\033[37m"

static int color_tty (int op) {
  static int colortty_fd = -1;
  if (op < 0)
    return colortty_fd;
  return colortty_fd = op;
}

static FILE *color_stream (FILE *f) {
  static FILE *sfile = 0;
  if (f)
    return sfile = f;
  return sfile ? sfile : stdout;
}

static void reset_color () {
  int fd = color_tty(-1);
  if (fd >= 0)
    write(fd, SCOLOR_RESET, sizeof(SCOLOR_RESET) - 1);
}

static void setinit_color (int fd, int ini)
{
  int save = errno;
  if (isatty(fd)) {
    write (color_tty(fd), SCOLOR_RESET, sizeof(SCOLOR_RESET) - 1);
    if (ini)
      atexit(reset_color);
  }
  errno = save;
}

static void init_color (FILE *f) {
  int fd = color_tty(-1);
  if (fd == -1) {
    /*
    int save = errno;
    if (isatty(fileno(f)))
      write (color_tty(fileno(color_stream(f))),
         SCOLOR_RESET, sizeof(SCOLOR_RESET) - 1);
    errno = save;
    atexit(reset_color);
    */
    setinit_color(fileno(f), 1);
    color_stream(f);
  }
}


#define FC_RESET(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_RESET, _f), fflush(_f);})
#define FC_BOLD(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_BOLD, _f), fflush(_f);})
#define FC_UNDER(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_UNDER, _f), fflush(_f);})
#define FC_INVERS(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_INVERS, _f), fflush(_f);})
#define FC_NORMAL(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_NORMAL, _f), fflush(_f);})
#define FC_BLACK(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_BLACK, _f), fflush(_f);})
#define FC_RED(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_RED, _f), fflush(_f);})
#define FC_GREEN(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_GREEN, _f), fflush(_f);})
#define FC_BROWN(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_BROWN, _f), fflush(_f);})
#define FC_BLUE(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_BLUE, _f), fflush(_f);})
#define FC_MAGENTA(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_MAGENTA, _f), fflush(_f);})
#define FC_CYAN(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_CYAN, _f), fflush(_f);})
#define FC_LIGHT(f) ({FILE *_f = (f); if (color_tty(-1) >= 0) fputs(SCOLOR_LIGHT, _f), fflush(_f);})

#define COLOR_RESET() (FC_RESET(color_stream(0)))
#define COLOR_BOLD() (FC_BOLD(color_stream(0)))
#define COLOR_UNDER() (FC_UNDER(color_stream(0)))
#define COLOR_INVERS() (FC_INVERS(color_stream(0)))
#define COLOR_NORMAL() (FC_NORMAL(color_stream(0)))
#define COLOR_BLACK() (FC_BLACK(color_stream(0)))
#define COLOR_RED() (FC_RED(color_stream(0)))
#define COLOR_GREEN() (FC_GREEN(color_stream(0)))
#define COLOR_BROWN() (FC_BROWN(color_stream(0)))
#define COLOR_BLUE() (FC_BLUE(color_stream(0)))
#define COLOR_MAGENTA() (FC_MAGENTA(color_stream(0)))
#define COLOR_CYAN() (FC_CYAN(color_stream(0)))
#define COLOR_LIGHT() (FC_LIGHT(color_stream(0)))

#if 0

#include <stdio.h>
#include <stdlib.h>

#include "color.h"

int
main (int ac, char *av[])
{
  init_color(stdout);
  perror("init");
  puts("INIT NORMAL");
  FC_RED(stdout); puts("Red");
  COLOR_UNDER(); puts("Under");
  COLOR_INVERS(); puts("Invers");
  COLOR_RESET(); puts("Reset");
  COLOR_RED(); puts("red again");
  COLOR_NORMAL(); puts("Normal");
  COLOR_BLACK(); puts("Black");
  COLOR_GREEN(); puts("Green");
  COLOR_BROWN(); puts("Brown");
  COLOR_BLUE(); puts("Blue");
  COLOR_MAGENTA(); puts("Magenta");
  COLOR_CYAN(); puts("Cyan");
  COLOR_LIGHT(); puts("Light");
  COLOR_BOLD(); puts("Now BOLD");
  COLOR_UNDER(); puts("+Under");
  COLOR_INVERS(); puts("+Invers");
  COLOR_NORMAL(); puts("Normal");
  COLOR_RED(); puts("red again");
  COLOR_BLACK(); puts("Black");
  COLOR_GREEN(); puts("Green");
  COLOR_BROWN(); puts("Brown");
  COLOR_BLUE(); puts("Blue");
  COLOR_MAGENTA(); puts("Magenta");
  COLOR_CYAN(); puts("Cyan");
  COLOR_LIGHT(); puts("Light");
  perror("xaxa2");
  COLOR_RESET(); puts("RESET");
  COLOR_BOLD(); puts("Now BOLD");
  COLOR_NORMAL(); puts("Normal BOLD");
  COLOR_RED(); puts("red again BOLD");
  COLOR_BLACK(); puts("Black BOLD");
  COLOR_GREEN(); puts("Green BOLD");
  COLOR_BROWN(); puts("Brown BOLD");
  COLOR_BLUE(); puts("Blue BOLD");
  COLOR_MAGENTA(); puts("Magenta BOLD");
  COLOR_CYAN(); puts("Cyan BOLD");
  COLOR_LIGHT(); puts("Light BOLD");

  getchar();

  return 0;
}
#endif

#endif