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Commit | Line | Data |
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7c92fe0e | 1 | #include "cache.h" |
85023577 | 2 | #include "color.h" |
7c92fe0e JK |
3 | |
4 | #define COLOR_RESET "\033[m" | |
5 | ||
6 | static int parse_color(const char *name, int len) | |
7 | { | |
8 | static const char * const color_names[] = { | |
9 | "normal", "black", "red", "green", "yellow", | |
10 | "blue", "magenta", "cyan", "white" | |
11 | }; | |
12 | char *end; | |
13 | int i; | |
14 | for (i = 0; i < ARRAY_SIZE(color_names); i++) { | |
15 | const char *str = color_names[i]; | |
16 | if (!strncasecmp(name, str, len) && !str[len]) | |
17 | return i - 1; | |
18 | } | |
19 | i = strtol(name, &end, 10); | |
a0cf49c1 | 20 | if (end - name == len && i >= -1 && i <= 255) |
7c92fe0e JK |
21 | return i; |
22 | return -2; | |
23 | } | |
24 | ||
25 | static int parse_attr(const char *name, int len) | |
26 | { | |
27 | static const int attr_values[] = { 1, 2, 4, 5, 7 }; | |
28 | static const char * const attr_names[] = { | |
29 | "bold", "dim", "ul", "blink", "reverse" | |
30 | }; | |
31 | int i; | |
32 | for (i = 0; i < ARRAY_SIZE(attr_names); i++) { | |
33 | const char *str = attr_names[i]; | |
34 | if (!strncasecmp(name, str, len) && !str[len]) | |
35 | return attr_values[i]; | |
36 | } | |
37 | return -1; | |
38 | } | |
39 | ||
40 | void color_parse(const char *value, const char *var, char *dst) | |
41 | { | |
42 | const char *ptr = value; | |
43 | int attr = -1; | |
44 | int fg = -2; | |
45 | int bg = -2; | |
46 | ||
47 | if (!strcasecmp(value, "reset")) { | |
48 | strcpy(dst, "\033[m"); | |
49 | return; | |
50 | } | |
51 | ||
52 | /* [fg [bg]] [attr] */ | |
53 | while (*ptr) { | |
54 | const char *word = ptr; | |
55 | int val, len = 0; | |
56 | ||
57 | while (word[len] && !isspace(word[len])) | |
58 | len++; | |
59 | ||
60 | ptr = word + len; | |
61 | while (*ptr && isspace(*ptr)) | |
62 | ptr++; | |
63 | ||
64 | val = parse_color(word, len); | |
65 | if (val >= -1) { | |
66 | if (fg == -2) { | |
67 | fg = val; | |
68 | continue; | |
69 | } | |
70 | if (bg == -2) { | |
71 | bg = val; | |
72 | continue; | |
73 | } | |
74 | goto bad; | |
75 | } | |
76 | val = parse_attr(word, len); | |
77 | if (val < 0 || attr != -1) | |
78 | goto bad; | |
79 | attr = val; | |
80 | } | |
81 | ||
82 | if (attr >= 0 || fg >= 0 || bg >= 0) { | |
83 | int sep = 0; | |
84 | ||
85 | *dst++ = '\033'; | |
86 | *dst++ = '['; | |
87 | if (attr >= 0) { | |
88 | *dst++ = '0' + attr; | |
89 | sep++; | |
90 | } | |
91 | if (fg >= 0) { | |
92 | if (sep++) | |
93 | *dst++ = ';'; | |
94 | if (fg < 8) { | |
95 | *dst++ = '3'; | |
96 | *dst++ = '0' + fg; | |
97 | } else { | |
98 | dst += sprintf(dst, "38;5;%d", fg); | |
99 | } | |
100 | } | |
101 | if (bg >= 0) { | |
102 | if (sep++) | |
103 | *dst++ = ';'; | |
104 | if (bg < 8) { | |
105 | *dst++ = '4'; | |
106 | *dst++ = '0' + bg; | |
107 | } else { | |
108 | dst += sprintf(dst, "48;5;%d", bg); | |
109 | } | |
110 | } | |
111 | *dst++ = 'm'; | |
112 | } | |
113 | *dst = 0; | |
114 | return; | |
115 | bad: | |
116 | die("bad config value '%s' for variable '%s'", value, var); | |
117 | } | |
118 | ||
0f6f5a40 | 119 | int git_config_colorbool(const char *var, const char *value, int stdout_is_tty) |
7c92fe0e | 120 | { |
57f2b842 JH |
121 | if (value) { |
122 | if (!strcasecmp(value, "never")) | |
123 | return 0; | |
124 | if (!strcasecmp(value, "always")) | |
125 | return 1; | |
126 | if (!strcasecmp(value, "auto")) | |
127 | goto auto_color; | |
7c92fe0e | 128 | } |
57f2b842 JH |
129 | |
130 | /* Missing or explicit false to turn off colorization */ | |
131 | if (!git_config_bool(var, value)) | |
7c92fe0e | 132 | return 0; |
57f2b842 JH |
133 | |
134 | /* any normal truth value defaults to 'auto' */ | |
135 | auto_color: | |
0f6f5a40 JH |
136 | if (stdout_is_tty < 0) |
137 | stdout_is_tty = isatty(1); | |
6e9af863 | 138 | if (stdout_is_tty || (pager_in_use() && pager_use_color)) { |
57f2b842 JH |
139 | char *term = getenv("TERM"); |
140 | if (term && strcmp(term, "dumb")) | |
141 | return 1; | |
142 | } | |
143 | return 0; | |
7c92fe0e JK |
144 | } |
145 | ||
f26a0012 | 146 | static int color_vfprintf(FILE *fp, const char *color, const char *fmt, |
7c92fe0e JK |
147 | va_list args, const char *trail) |
148 | { | |
149 | int r = 0; | |
150 | ||
151 | if (*color) | |
f26a0012 KH |
152 | r += fprintf(fp, "%s", color); |
153 | r += vfprintf(fp, fmt, args); | |
7c92fe0e | 154 | if (*color) |
f26a0012 | 155 | r += fprintf(fp, "%s", COLOR_RESET); |
7c92fe0e | 156 | if (trail) |
f26a0012 | 157 | r += fprintf(fp, "%s", trail); |
7c92fe0e JK |
158 | return r; |
159 | } | |
160 | ||
161 | ||
162 | ||
f26a0012 | 163 | int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) |
7c92fe0e JK |
164 | { |
165 | va_list args; | |
166 | int r; | |
167 | va_start(args, fmt); | |
f26a0012 | 168 | r = color_vfprintf(fp, color, fmt, args, NULL); |
7c92fe0e JK |
169 | va_end(args); |
170 | return r; | |
171 | } | |
172 | ||
f26a0012 | 173 | int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...) |
7c92fe0e JK |
174 | { |
175 | va_list args; | |
176 | int r; | |
177 | va_start(args, fmt); | |
f26a0012 | 178 | r = color_vfprintf(fp, color, fmt, args, "\n"); |
7c92fe0e JK |
179 | va_end(args); |
180 | return r; | |
181 | } |