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lib/color: add module for work with terminal colors 

[kzak@redhat.com: - split from dmesg patch
                  - add more colors]

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Ondrej Oprala 2012-10-16 16:39:00 +02:00 committed by Karel Zak
parent b4359220da
commit dfa68ad183
3 changed files with 79 additions and 0 deletions
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50
include/colors.h Normal file
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@ -0,0 +1,50 @@
/*
* Copyright (C) 2012 Ondrej Oprala <ooprala@redhat.com>
*
* This file may be distributed under the terms of the
* GNU Lesser General Public License.
*/
#ifndef UTIL_LINUX_COLORS_H
#define UTIL_LINUX_COLORS_H
#include <stdio.h>
#include <unistd.h>
#define UL_COLOR_RESET "\033[0m"
#define UL_COLOR_BOLD "\033[1m"
#define UL_COLOR_HALFBRIGHT "\033[2m"
#define UL_COLOR_UNDERSCORE "\033[4m"
#define UL_COLOR_BLINK "\033[5m"
#define UL_COLOR_REVERSE "\033[7m"
/* Standard colors */
#define UL_COLOR_BLACK "\033[30m"
#define UL_COLOR_RED "\033[31m"
#define UL_COLOR_GREEN "\033[32m"
#define UL_COLOR_YELLOW "\033[33m"
#define UL_COLOR_BLUE "\033[34m"
#define UL_COLOR_MAGENTA "\033[35m"
#define UL_COLOR_CYAN "\033[36m"
#define UL_COLOR_GRAY "\033[37m"
/* Bold variants */
#define UL_COLOR_DARK_GRAY "\033[1;30m"
#define UL_COLOR_BOLD_RED "\033[1;31m"
#define UL_COLOR_BOLD_GREEN "\033[1;32m"
#define UL_COLOR_BOLD_YELLOW "\033[1;33m"
#define UL_COLOR_BOLD_BLUE "\033[1;34m"
#define UL_COLOR_BOLD_MAGENTA "\033[1;35m"
#define UL_COLOR_BOLD_CYAN "\033[1;36m"
#define UL_COLOR_WHITE "\033[1;37m"
/* Initialize the global variable OUT_IS_TERM */
extern int colors_init(void);
/* Set the color to CLR_SCHEME */
extern void color_enable(const char *clr_scheme);
/* Reset colors to default */
extern void color_disable(void);
#endif /* UTIL_LINUX_COLORS_H */

1
lib/Makemodule.am
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@ -5,6 +5,7 @@ libcommon_la_SOURCES = \
lib/at.c \
lib/blkdev.c \
lib/canonicalize.c \
lib/colors.c \
lib/cpuset.c \
lib/crc32.c \
lib/env.c \

28
lib/colors.c Normal file
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@ -0,0 +1,28 @@
/*
* Copyright (C) 2012 Ondrej Oprala <ooprala@redhat.com>
*
* This file may be distributed under the terms of the
* GNU Lesser General Public License.
*/
#include "colors.h"
static int ul_color_term_ok;
int colors_init(void)
{
ul_color_term_ok = isatty(STDOUT_FILENO);
return ul_color_term_ok;
}
void color_enable(const char *color_scheme)
{
if (ul_color_term_ok)
fputs(color_scheme, stdout);
}
void color_disable(void)
{
if (ul_color_term_ok)
fputs(UL_COLOR_RESET, stdout);
}