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6054c1eb | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
d7bd2db5 MN |
2 | #include <stdio.h> |
3 | #include <stdarg.h> | |
54eab4c7 PV |
4 | #include <stdlib.h> |
5 | #include <string.h> | |
ff1ab8ed | 6 | #include <unistd.h> |
a1121aa1 PS |
7 | #include <sys/socket.h> |
8 | #include <sys/types.h> | |
9 | #include <linux/if.h> | |
d7bd2db5 MN |
10 | |
11 | #include "color.h" | |
ff1ab8ed | 12 | #include "utils.h" |
d7bd2db5 MN |
13 | |
14 | enum color { | |
15 | C_RED, | |
16 | C_GREEN, | |
17 | C_YELLOW, | |
18 | C_BLUE, | |
19 | C_MAGENTA, | |
20 | C_CYAN, | |
21 | C_WHITE, | |
54eab4c7 PV |
22 | C_BOLD_RED, |
23 | C_BOLD_GREEN, | |
24 | C_BOLD_YELLOW, | |
25 | C_BOLD_BLUE, | |
26 | C_BOLD_MAGENTA, | |
27 | C_BOLD_CYAN, | |
28 | C_BOLD_WHITE, | |
d7bd2db5 MN |
29 | C_CLEAR |
30 | }; | |
31 | ||
32 | static const char * const color_codes[] = { | |
33 | "\e[31m", | |
34 | "\e[32m", | |
35 | "\e[33m", | |
36 | "\e[34m", | |
37 | "\e[35m", | |
38 | "\e[36m", | |
39 | "\e[37m", | |
54eab4c7 PV |
40 | "\e[1;31m", |
41 | "\e[1;32m", | |
42 | "\e[1;33m", | |
43 | "\e[1;34m", | |
44 | "\e[1;35m", | |
45 | "\e[1;36m", | |
46 | "\e[1;37m", | |
d7bd2db5 MN |
47 | "\e[0m", |
48 | NULL, | |
49 | }; | |
50 | ||
99b89c51 PV |
51 | /* light background */ |
52 | static enum color attr_colors_light[] = { | |
d7bd2db5 MN |
53 | C_CYAN, |
54 | C_YELLOW, | |
55 | C_MAGENTA, | |
56 | C_BLUE, | |
57 | C_GREEN, | |
a1121aa1 | 58 | C_RED, |
54eab4c7 | 59 | C_CLEAR, |
99b89c51 | 60 | }; |
54eab4c7 | 61 | |
99b89c51 PV |
62 | /* dark background */ |
63 | static enum color attr_colors_dark[] = { | |
54eab4c7 PV |
64 | C_BOLD_CYAN, |
65 | C_BOLD_YELLOW, | |
66 | C_BOLD_MAGENTA, | |
67 | C_BOLD_BLUE, | |
68 | C_BOLD_GREEN, | |
69 | C_BOLD_RED, | |
a1121aa1 | 70 | C_CLEAR |
d7bd2db5 MN |
71 | }; |
72 | ||
54eab4c7 | 73 | static int is_dark_bg; |
d7bd2db5 MN |
74 | static int color_is_enabled; |
75 | ||
76 | void enable_color(void) | |
77 | { | |
78 | color_is_enabled = 1; | |
54eab4c7 PV |
79 | set_color_palette(); |
80 | } | |
81 | ||
515a766c | 82 | bool check_enable_color(int color, int json) |
4d82962c | 83 | { |
ff1ab8ed | 84 | if (json || color == COLOR_OPT_NEVER) |
515a766c | 85 | return false; |
ff1ab8ed PS |
86 | |
87 | if (color == COLOR_OPT_ALWAYS || isatty(fileno(stdout))) { | |
4d82962c | 88 | enable_color(); |
515a766c | 89 | return true; |
4d82962c | 90 | } |
515a766c | 91 | return false; |
4d82962c PS |
92 | } |
93 | ||
ff1ab8ed PS |
94 | bool matches_color(const char *arg, int *val) |
95 | { | |
96 | char *dup, *p; | |
97 | ||
98 | if (!val) | |
99 | return false; | |
100 | ||
101 | dup = strdupa(arg); | |
102 | p = strchrnul(dup, '='); | |
103 | if (*p) | |
104 | *(p++) = '\0'; | |
105 | ||
106 | if (matches(dup, "-color")) | |
107 | return false; | |
108 | ||
109 | if (*p == '\0' || !strcmp(p, "always")) | |
110 | *val = COLOR_OPT_ALWAYS; | |
111 | else if (!strcmp(p, "auto")) | |
112 | *val = COLOR_OPT_AUTO; | |
113 | else if (!strcmp(p, "never")) | |
114 | *val = COLOR_OPT_NEVER; | |
115 | else | |
116 | return false; | |
117 | return true; | |
118 | } | |
119 | ||
54eab4c7 PV |
120 | void set_color_palette(void) |
121 | { | |
122 | char *p = getenv("COLORFGBG"); | |
123 | ||
124 | /* | |
125 | * COLORFGBG environment variable usually contains either two or three | |
126 | * values separated by semicolons; we want the last value in either case. | |
127 | * If this value is 0-6 or 8, background is dark. | |
128 | */ | |
129 | if (p && (p = strrchr(p, ';')) != NULL | |
130 | && ((p[1] >= '0' && p[1] <= '6') || p[1] == '8') | |
131 | && p[2] == '\0') | |
132 | is_dark_bg = 1; | |
d7bd2db5 MN |
133 | } |
134 | ||
5d5586b0 | 135 | __attribute__((format(printf, 3, 4))) |
d7bd2db5 MN |
136 | int color_fprintf(FILE *fp, enum color_attr attr, const char *fmt, ...) |
137 | { | |
138 | int ret = 0; | |
139 | va_list args; | |
140 | ||
141 | va_start(args, fmt); | |
142 | ||
4b73d52f | 143 | if (!color_is_enabled || attr == COLOR_NONE) { |
d7bd2db5 MN |
144 | ret = vfprintf(fp, fmt, args); |
145 | goto end; | |
146 | } | |
147 | ||
99b89c51 PV |
148 | ret += fprintf(fp, "%s", color_codes[is_dark_bg ? |
149 | attr_colors_dark[attr] : attr_colors_light[attr]]); | |
150 | ||
d7bd2db5 MN |
151 | ret += vfprintf(fp, fmt, args); |
152 | ret += fprintf(fp, "%s", color_codes[C_CLEAR]); | |
153 | ||
154 | end: | |
155 | va_end(args); | |
156 | return ret; | |
157 | } | |
a1121aa1 PS |
158 | |
159 | enum color_attr ifa_family_color(__u8 ifa_family) | |
160 | { | |
161 | switch (ifa_family) { | |
162 | case AF_INET: | |
163 | return COLOR_INET; | |
164 | case AF_INET6: | |
165 | return COLOR_INET6; | |
166 | default: | |
4b73d52f | 167 | return COLOR_NONE; |
a1121aa1 PS |
168 | } |
169 | } | |
170 | ||
171 | enum color_attr oper_state_color(__u8 state) | |
172 | { | |
173 | switch (state) { | |
174 | case IF_OPER_UP: | |
175 | return COLOR_OPERSTATE_UP; | |
176 | case IF_OPER_DOWN: | |
177 | return COLOR_OPERSTATE_DOWN; | |
178 | default: | |
4b73d52f | 179 | return COLOR_NONE; |
a1121aa1 PS |
180 | } |
181 | } |