1 files changed, 87 insertions, 4 deletions

diff --git a/lib/color.c b/lib/color.c
index 8c9a48ba..8d049a01 100644
--- a/lib/color.c
+++ b/lib/color.c
@@ -1,5 +1,10 @@
 #include <stdio.h>
 #include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <linux/if.h>
 
 #include "color.h"
 
@@ -11,6 +16,13 @@ enum color {
 	C_MAGENTA,
 	C_CYAN,
 	C_WHITE,
+	C_BOLD_RED,
+	C_BOLD_GREEN,
+	C_BOLD_YELLOW,
+	C_BOLD_BLUE,
+	C_BOLD_MAGENTA,
+	C_BOLD_CYAN,
+	C_BOLD_WHITE,
 	C_CLEAR
 };
 
@@ -22,24 +34,69 @@ static const char * const color_codes[] = {
 	"\e[35m",
 	"\e[36m",
 	"\e[37m",
+	"\e[1;31m",
+	"\e[1;32m",
+	"\e[1;33m",
+	"\e[1;34m",
+	"\e[1;35m",
+	"\e[1;36m",
+	"\e[1;37m",
 	"\e[0m",
 	NULL,
 };
 
-static enum color attr_colors[] = {
+/* light background */
+static enum color attr_colors_light[] = {
 	C_CYAN,
 	C_YELLOW,
 	C_MAGENTA,
 	C_BLUE,
 	C_GREEN,
-	C_RED
+	C_RED,
+	C_CLEAR,
+};
+
+/* dark background */
+static enum color attr_colors_dark[] = {
+	C_BOLD_CYAN,
+	C_BOLD_YELLOW,
+	C_BOLD_MAGENTA,
+	C_BOLD_BLUE,
+	C_BOLD_GREEN,
+	C_BOLD_RED,
+	C_CLEAR
 };
 
+static int is_dark_bg;
 static int color_is_enabled;
 
 void enable_color(void)
 {
 	color_is_enabled = 1;
+	set_color_palette();
+}
+
+void set_color_palette(void)
+{
+	char *p = getenv("COLORFGBG");
+
+	/*
+	 * COLORFGBG environment variable usually contains either two or three
+	 * values separated by semicolons; we want the last value in either case.
+	 * If this value is 0-6 or 8, background is dark.
+	 */
+	if (p && (p = strrchr(p, ';')) != NULL
+		&& ((p[1] >= '0' && p[1] <= '6') || p[1] == '8')
+		&& p[2] == '\0')
+		is_dark_bg = 1;
+}
+
+void check_if_color_enabled(void)
+{
+	if (color_is_enabled) {
+		fprintf(stderr, "Option \"-json\" conflicts with \"-color\".\n");
+		exit(1);
+	}
 }
 
 int color_fprintf(FILE *fp, enum color_attr attr, const char *fmt, ...)
@@ -49,12 +106,14 @@ int color_fprintf(FILE *fp, enum color_attr attr, const char *fmt, ...)
 
 	va_start(args, fmt);
 
-	if (!color_is_enabled) {
+	if (!color_is_enabled || attr == COLOR_NONE) {
 		ret = vfprintf(fp, fmt, args);
 		goto end;
 	}
 
-	ret += fprintf(fp, "%s", color_codes[attr_colors[attr]]);
+	ret += fprintf(fp, "%s", color_codes[is_dark_bg ?
+		attr_colors_dark[attr] : attr_colors_light[attr]]);
+
 	ret += vfprintf(fp, fmt, args);
 	ret += fprintf(fp, "%s", color_codes[C_CLEAR]);
 
@@ -62,3 +121,27 @@ end:
 	va_end(args);
 	return ret;
 }
+
+enum color_attr ifa_family_color(__u8 ifa_family)
+{
+	switch (ifa_family) {
+	case AF_INET:
+		return COLOR_INET;
+	case AF_INET6:
+		return COLOR_INET6;
+	default:
+		return COLOR_NONE;
+	}
+}
+
+enum color_attr oper_state_color(__u8 state)
+{
+	switch (state) {
+	case IF_OPER_UP:
+		return COLOR_OPERSTATE_UP;
+	case IF_OPER_DOWN:
+		return COLOR_OPERSTATE_DOWN;
+	default:
+		return COLOR_NONE;
+	}
+}