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Commit | Line | Data |
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7c92fe0e | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
85023577 | 3 | #include "color.h" |
7c92fe0e | 4 | |
4c7f1819 | 5 | static int git_use_color_default = GIT_COLOR_AUTO; |
e269eb79 | 6 | int color_stdout_is_tty = -1; |
6b2f2d98 | 7 | |
7cd52b5b DM |
8 | /* |
9 | * The list of available column colors. | |
10 | */ | |
11 | const char *column_colors_ansi[] = { | |
12 | GIT_COLOR_RED, | |
13 | GIT_COLOR_GREEN, | |
14 | GIT_COLOR_YELLOW, | |
15 | GIT_COLOR_BLUE, | |
16 | GIT_COLOR_MAGENTA, | |
17 | GIT_COLOR_CYAN, | |
18 | GIT_COLOR_BOLD_RED, | |
19 | GIT_COLOR_BOLD_GREEN, | |
20 | GIT_COLOR_BOLD_YELLOW, | |
21 | GIT_COLOR_BOLD_BLUE, | |
22 | GIT_COLOR_BOLD_MAGENTA, | |
23 | GIT_COLOR_BOLD_CYAN, | |
24 | GIT_COLOR_RESET, | |
25 | }; | |
26 | ||
27 | /* Ignore the RESET at the end when giving the size */ | |
28 | const int column_colors_ansi_max = ARRAY_SIZE(column_colors_ansi) - 1; | |
29 | ||
695d95df JK |
30 | /* An individual foreground or background color. */ |
31 | struct color { | |
32 | enum { | |
33 | COLOR_UNSPECIFIED = 0, | |
34 | COLOR_NORMAL, | |
35 | COLOR_ANSI, /* basic 0-7 ANSI colors */ | |
17a4be26 JK |
36 | COLOR_256, |
37 | COLOR_RGB | |
695d95df JK |
38 | } type; |
39 | /* The numeric value for ANSI and 256-color modes */ | |
40 | unsigned char value; | |
17a4be26 JK |
41 | /* 24-bit RGB color values */ |
42 | unsigned char red, green, blue; | |
695d95df JK |
43 | }; |
44 | ||
45 | /* | |
46 | * "word" is a buffer of length "len"; does it match the NUL-terminated | |
47 | * "match" exactly? | |
48 | */ | |
49 | static int match_word(const char *word, int len, const char *match) | |
7c92fe0e | 50 | { |
695d95df JK |
51 | return !strncasecmp(word, match, len) && !match[len]; |
52 | } | |
53 | ||
17a4be26 JK |
54 | static int get_hex_color(const char *in, unsigned char *out) |
55 | { | |
56 | unsigned int val; | |
57 | val = (hexval(in[0]) << 4) | hexval(in[1]); | |
58 | if (val & ~0xff) | |
59 | return -1; | |
60 | *out = val; | |
61 | return 0; | |
62 | } | |
63 | ||
695d95df JK |
64 | static int parse_color(struct color *out, const char *name, int len) |
65 | { | |
66 | /* Positions in array must match ANSI color codes */ | |
7c92fe0e | 67 | static const char * const color_names[] = { |
695d95df | 68 | "black", "red", "green", "yellow", |
7c92fe0e JK |
69 | "blue", "magenta", "cyan", "white" |
70 | }; | |
71 | char *end; | |
72 | int i; | |
695d95df JK |
73 | long val; |
74 | ||
75 | /* First try the special word "normal"... */ | |
76 | if (match_word(name, len, "normal")) { | |
77 | out->type = COLOR_NORMAL; | |
78 | return 0; | |
79 | } | |
80 | ||
17a4be26 JK |
81 | /* Try a 24-bit RGB value */ |
82 | if (len == 7 && name[0] == '#') { | |
83 | if (!get_hex_color(name + 1, &out->red) && | |
84 | !get_hex_color(name + 3, &out->green) && | |
85 | !get_hex_color(name + 5, &out->blue)) { | |
86 | out->type = COLOR_RGB; | |
87 | return 0; | |
88 | } | |
89 | } | |
90 | ||
695d95df | 91 | /* Then pick from our human-readable color names... */ |
7c92fe0e | 92 | for (i = 0; i < ARRAY_SIZE(color_names); i++) { |
695d95df JK |
93 | if (match_word(name, len, color_names[i])) { |
94 | out->type = COLOR_ANSI; | |
95 | out->value = i; | |
96 | return 0; | |
97 | } | |
7c92fe0e | 98 | } |
695d95df JK |
99 | |
100 | /* And finally try a literal 256-color-mode number */ | |
101 | val = strtol(name, &end, 10); | |
102 | if (end - name == len) { | |
103 | /* | |
104 | * Allow "-1" as an alias for "normal", but other negative | |
105 | * numbers are bogus. | |
106 | */ | |
107 | if (val < -1) | |
108 | ; /* fall through to error */ | |
109 | else if (val < 0) { | |
110 | out->type = COLOR_NORMAL; | |
111 | return 0; | |
112 | /* Rewrite low numbers as more-portable standard colors. */ | |
113 | } else if (val < 8) { | |
114 | out->type = COLOR_ANSI; | |
115 | out->value = val; | |
3759d27a | 116 | return 0; |
695d95df JK |
117 | } else if (val < 256) { |
118 | out->type = COLOR_256; | |
119 | out->value = val; | |
120 | return 0; | |
121 | } | |
122 | } | |
123 | ||
124 | return -1; | |
7c92fe0e JK |
125 | } |
126 | ||
df8e472c | 127 | static int parse_attr(const char *name, size_t len) |
7c92fe0e | 128 | { |
df8e472c JK |
129 | static const struct { |
130 | const char *name; | |
131 | size_t len; | |
132 | int val, neg; | |
133 | } attrs[] = { | |
134 | #define ATTR(x, val, neg) { (x), sizeof(x)-1, (val), (neg) } | |
135 | ATTR("bold", 1, 22), | |
136 | ATTR("dim", 2, 22), | |
54590a0e | 137 | ATTR("italic", 3, 23), |
df8e472c JK |
138 | ATTR("ul", 4, 24), |
139 | ATTR("blink", 5, 25), | |
9dc3515c JK |
140 | ATTR("reverse", 7, 27), |
141 | ATTR("strike", 9, 29) | |
df8e472c | 142 | #undef ATTR |
7c92fe0e | 143 | }; |
df8e472c | 144 | int negate = 0; |
7c92fe0e | 145 | int i; |
df8e472c | 146 | |
5621068f JK |
147 | if (skip_prefix_mem(name, len, "no", &name, &len)) { |
148 | skip_prefix_mem(name, len, "-", &name, &len); | |
df8e472c | 149 | negate = 1; |
5621068f | 150 | } |
df8e472c JK |
151 | |
152 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { | |
153 | if (attrs[i].len == len && !memcmp(attrs[i].name, name, len)) | |
154 | return negate ? attrs[i].neg : attrs[i].val; | |
7c92fe0e JK |
155 | } |
156 | return -1; | |
157 | } | |
158 | ||
f6c5a296 | 159 | int color_parse(const char *value, char *dst) |
2c2dc7c8 | 160 | { |
f6c5a296 | 161 | return color_parse_mem(value, strlen(value), dst); |
2c2dc7c8 RS |
162 | } |
163 | ||
695d95df JK |
164 | /* |
165 | * Write the ANSI color codes for "c" to "out"; the string should | |
166 | * already have the ANSI escape code in it. "out" should have enough | |
167 | * space in it to fit any color. | |
168 | */ | |
cbc8feea | 169 | static char *color_output(char *out, int len, const struct color *c, char type) |
695d95df JK |
170 | { |
171 | switch (c->type) { | |
172 | case COLOR_UNSPECIFIED: | |
173 | case COLOR_NORMAL: | |
174 | break; | |
175 | case COLOR_ANSI: | |
cbc8feea JK |
176 | if (len < 2) |
177 | die("BUG: color parsing ran out of space"); | |
695d95df JK |
178 | *out++ = type; |
179 | *out++ = '0' + c->value; | |
180 | break; | |
181 | case COLOR_256: | |
cbc8feea | 182 | out += xsnprintf(out, len, "%c8;5;%d", type, c->value); |
695d95df | 183 | break; |
17a4be26 | 184 | case COLOR_RGB: |
cbc8feea JK |
185 | out += xsnprintf(out, len, "%c8;2;%d;%d;%d", type, |
186 | c->red, c->green, c->blue); | |
17a4be26 | 187 | break; |
695d95df JK |
188 | } |
189 | return out; | |
190 | } | |
191 | ||
192 | static int color_empty(const struct color *c) | |
193 | { | |
194 | return c->type <= COLOR_NORMAL; | |
195 | } | |
196 | ||
f6c5a296 | 197 | int color_parse_mem(const char *value, int value_len, char *dst) |
7c92fe0e JK |
198 | { |
199 | const char *ptr = value; | |
2c2dc7c8 | 200 | int len = value_len; |
cbc8feea | 201 | char *end = dst + COLOR_MAXLEN; |
8b124135 | 202 | unsigned int attr = 0; |
695d95df JK |
203 | struct color fg = { COLOR_UNSPECIFIED }; |
204 | struct color bg = { COLOR_UNSPECIFIED }; | |
7c92fe0e | 205 | |
bc407565 NTND |
206 | while (len > 0 && isspace(*ptr)) { |
207 | ptr++; | |
208 | len--; | |
209 | } | |
210 | ||
55cccf4b JK |
211 | if (!len) { |
212 | dst[0] = '\0'; | |
213 | return 0; | |
214 | } | |
c2f41bf5 | 215 | |
bc407565 | 216 | if (!strncasecmp(ptr, "reset", len)) { |
cbc8feea | 217 | xsnprintf(dst, end - dst, GIT_COLOR_RESET); |
f6c5a296 | 218 | return 0; |
7c92fe0e JK |
219 | } |
220 | ||
8b124135 | 221 | /* [fg [bg]] [attr]... */ |
2c2dc7c8 | 222 | while (len > 0) { |
7c92fe0e | 223 | const char *word = ptr; |
3e1952ed | 224 | struct color c = { COLOR_UNSPECIFIED }; |
2c2dc7c8 | 225 | int val, wordlen = 0; |
7c92fe0e | 226 | |
2c2dc7c8 RS |
227 | while (len > 0 && !isspace(word[wordlen])) { |
228 | wordlen++; | |
229 | len--; | |
230 | } | |
7c92fe0e | 231 | |
2c2dc7c8 RS |
232 | ptr = word + wordlen; |
233 | while (len > 0 && isspace(*ptr)) { | |
7c92fe0e | 234 | ptr++; |
2c2dc7c8 RS |
235 | len--; |
236 | } | |
7c92fe0e | 237 | |
695d95df JK |
238 | if (!parse_color(&c, word, wordlen)) { |
239 | if (fg.type == COLOR_UNSPECIFIED) { | |
240 | fg = c; | |
7c92fe0e JK |
241 | continue; |
242 | } | |
695d95df JK |
243 | if (bg.type == COLOR_UNSPECIFIED) { |
244 | bg = c; | |
7c92fe0e JK |
245 | continue; |
246 | } | |
247 | goto bad; | |
248 | } | |
2c2dc7c8 | 249 | val = parse_attr(word, wordlen); |
8b124135 JH |
250 | if (0 <= val) |
251 | attr |= (1 << val); | |
252 | else | |
7c92fe0e | 253 | goto bad; |
7c92fe0e JK |
254 | } |
255 | ||
cbc8feea JK |
256 | #undef OUT |
257 | #define OUT(x) do { \ | |
258 | if (dst == end) \ | |
259 | die("BUG: color parsing ran out of space"); \ | |
260 | *dst++ = (x); \ | |
261 | } while(0) | |
262 | ||
695d95df | 263 | if (attr || !color_empty(&fg) || !color_empty(&bg)) { |
7c92fe0e | 264 | int sep = 0; |
8b124135 | 265 | int i; |
7c92fe0e | 266 | |
cbc8feea JK |
267 | OUT('\033'); |
268 | OUT('['); | |
8b124135 JH |
269 | |
270 | for (i = 0; attr; i++) { | |
271 | unsigned bit = (1 << i); | |
272 | if (!(attr & bit)) | |
273 | continue; | |
274 | attr &= ~bit; | |
275 | if (sep++) | |
cbc8feea JK |
276 | OUT(';'); |
277 | dst += xsnprintf(dst, end - dst, "%d", i); | |
7c92fe0e | 278 | } |
695d95df | 279 | if (!color_empty(&fg)) { |
7c92fe0e | 280 | if (sep++) |
cbc8feea | 281 | OUT(';'); |
71b59849 | 282 | /* foreground colors are all in the 3x range */ |
cbc8feea | 283 | dst = color_output(dst, end - dst, &fg, '3'); |
7c92fe0e | 284 | } |
695d95df | 285 | if (!color_empty(&bg)) { |
7c92fe0e | 286 | if (sep++) |
cbc8feea | 287 | OUT(';'); |
71b59849 | 288 | /* background colors are all in the 4x range */ |
cbc8feea | 289 | dst = color_output(dst, end - dst, &bg, '4'); |
7c92fe0e | 290 | } |
cbc8feea | 291 | OUT('m'); |
7c92fe0e | 292 | } |
cbc8feea | 293 | OUT(0); |
f6c5a296 | 294 | return 0; |
7c92fe0e | 295 | bad: |
f6c5a296 | 296 | return error(_("invalid color value: %.*s"), value_len, value); |
cbc8feea | 297 | #undef OUT |
7c92fe0e JK |
298 | } |
299 | ||
e269eb79 | 300 | int git_config_colorbool(const char *var, const char *value) |
7c92fe0e | 301 | { |
57f2b842 JH |
302 | if (value) { |
303 | if (!strcasecmp(value, "never")) | |
304 | return 0; | |
305 | if (!strcasecmp(value, "always")) | |
2c1acdf6 | 306 | return 1; |
57f2b842 | 307 | if (!strcasecmp(value, "auto")) |
daa0c3d9 | 308 | return GIT_COLOR_AUTO; |
7c92fe0e | 309 | } |
57f2b842 | 310 | |
73e9da01 ML |
311 | if (!var) |
312 | return -1; | |
313 | ||
57f2b842 JH |
314 | /* Missing or explicit false to turn off colorization */ |
315 | if (!git_config_bool(var, value)) | |
7c92fe0e | 316 | return 0; |
57f2b842 JH |
317 | |
318 | /* any normal truth value defaults to 'auto' */ | |
daa0c3d9 JK |
319 | return GIT_COLOR_AUTO; |
320 | } | |
321 | ||
295d949c | 322 | static int check_auto_color(int fd) |
daa0c3d9 | 323 | { |
295d949c JS |
324 | static int color_stderr_is_tty = -1; |
325 | int *is_tty_p = fd == 1 ? &color_stdout_is_tty : &color_stderr_is_tty; | |
326 | if (*is_tty_p < 0) | |
327 | *is_tty_p = isatty(fd); | |
328 | if (*is_tty_p || (fd == 1 && pager_in_use() && pager_use_color)) { | |
a64f213d | 329 | if (!is_terminal_dumb()) |
57f2b842 JH |
330 | return 1; |
331 | } | |
332 | return 0; | |
7c92fe0e JK |
333 | } |
334 | ||
295d949c | 335 | int want_color_fd(int fd, int var) |
daa0c3d9 | 336 | { |
6cdf8a79 MÅ |
337 | /* |
338 | * NEEDSWORK: This function is sometimes used from multiple threads, and | |
339 | * we end up using want_auto racily. That "should not matter" since | |
340 | * we always write the same value, but it's still wrong. This function | |
341 | * is listed in .tsan-suppressions for the time being. | |
342 | */ | |
343 | ||
295d949c | 344 | static int want_auto[3] = { -1, -1, -1 }; |
daa0c3d9 | 345 | |
c9bfb953 JK |
346 | if (var < 0) |
347 | var = git_use_color_default; | |
348 | ||
daa0c3d9 | 349 | if (var == GIT_COLOR_AUTO) { |
295d949c JS |
350 | if (want_auto[fd] < 0) |
351 | want_auto[fd] = check_auto_color(fd); | |
352 | return want_auto[fd]; | |
daa0c3d9 | 353 | } |
c9bfb953 | 354 | return var; |
daa0c3d9 JK |
355 | } |
356 | ||
3e1dd17a | 357 | int git_color_config(const char *var, const char *value, void *cb) |
6b2f2d98 MK |
358 | { |
359 | if (!strcmp(var, "color.ui")) { | |
e269eb79 | 360 | git_use_color_default = git_config_colorbool(var, value); |
6b2f2d98 MK |
361 | return 0; |
362 | } | |
363 | ||
3e1dd17a JK |
364 | return 0; |
365 | } | |
366 | ||
33c643bb JK |
367 | int git_color_default_config(const char *var, const char *value, void *cb) |
368 | { | |
369 | if (git_color_config(var, value, cb) < 0) | |
370 | return -1; | |
371 | ||
372 | return git_default_config(var, value, cb); | |
373 | } | |
374 | ||
becbdae8 JN |
375 | void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb) |
376 | { | |
377 | if (*color) | |
378 | fprintf(fp, "%s", color); | |
379 | fprintf(fp, "%s", sb->buf); | |
380 | if (*color) | |
381 | fprintf(fp, "%s", GIT_COLOR_RESET); | |
382 | } | |
383 | ||
f26a0012 | 384 | static int color_vfprintf(FILE *fp, const char *color, const char *fmt, |
7c92fe0e JK |
385 | va_list args, const char *trail) |
386 | { | |
387 | int r = 0; | |
388 | ||
389 | if (*color) | |
f26a0012 KH |
390 | r += fprintf(fp, "%s", color); |
391 | r += vfprintf(fp, fmt, args); | |
7c92fe0e | 392 | if (*color) |
dc6ebd4c | 393 | r += fprintf(fp, "%s", GIT_COLOR_RESET); |
7c92fe0e | 394 | if (trail) |
f26a0012 | 395 | r += fprintf(fp, "%s", trail); |
7c92fe0e JK |
396 | return r; |
397 | } | |
398 | ||
f26a0012 | 399 | int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) |
7c92fe0e JK |
400 | { |
401 | va_list args; | |
402 | int r; | |
403 | va_start(args, fmt); | |
f26a0012 | 404 | r = color_vfprintf(fp, color, fmt, args, NULL); |
7c92fe0e JK |
405 | va_end(args); |
406 | return r; | |
407 | } | |
408 | ||
f26a0012 | 409 | int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...) |
7c92fe0e JK |
410 | { |
411 | va_list args; | |
412 | int r; | |
413 | va_start(args, fmt); | |
f26a0012 | 414 | r = color_vfprintf(fp, color, fmt, args, "\n"); |
7c92fe0e JK |
415 | va_end(args); |
416 | return r; | |
417 | } | |
148135fc JK |
418 | |
419 | int color_is_nil(const char *c) | |
420 | { | |
421 | return !strcmp(c, "NIL"); | |
422 | } |