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Commit | Line | Data |
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7c92fe0e | 1 | #include "cache.h" |
85023577 | 2 | #include "color.h" |
7c92fe0e | 3 | |
4c7f1819 | 4 | static int git_use_color_default = GIT_COLOR_AUTO; |
e269eb79 | 5 | int color_stdout_is_tty = -1; |
6b2f2d98 | 6 | |
7cd52b5b DM |
7 | /* |
8 | * The list of available column colors. | |
9 | */ | |
10 | const char *column_colors_ansi[] = { | |
11 | GIT_COLOR_RED, | |
12 | GIT_COLOR_GREEN, | |
13 | GIT_COLOR_YELLOW, | |
14 | GIT_COLOR_BLUE, | |
15 | GIT_COLOR_MAGENTA, | |
16 | GIT_COLOR_CYAN, | |
17 | GIT_COLOR_BOLD_RED, | |
18 | GIT_COLOR_BOLD_GREEN, | |
19 | GIT_COLOR_BOLD_YELLOW, | |
20 | GIT_COLOR_BOLD_BLUE, | |
21 | GIT_COLOR_BOLD_MAGENTA, | |
22 | GIT_COLOR_BOLD_CYAN, | |
23 | GIT_COLOR_RESET, | |
24 | }; | |
25 | ||
26 | /* Ignore the RESET at the end when giving the size */ | |
27 | const int column_colors_ansi_max = ARRAY_SIZE(column_colors_ansi) - 1; | |
28 | ||
695d95df JK |
29 | /* An individual foreground or background color. */ |
30 | struct color { | |
31 | enum { | |
32 | COLOR_UNSPECIFIED = 0, | |
33 | COLOR_NORMAL, | |
34 | COLOR_ANSI, /* basic 0-7 ANSI colors */ | |
17a4be26 JK |
35 | COLOR_256, |
36 | COLOR_RGB | |
695d95df JK |
37 | } type; |
38 | /* The numeric value for ANSI and 256-color modes */ | |
39 | unsigned char value; | |
17a4be26 JK |
40 | /* 24-bit RGB color values */ |
41 | unsigned char red, green, blue; | |
695d95df JK |
42 | }; |
43 | ||
44 | /* | |
45 | * "word" is a buffer of length "len"; does it match the NUL-terminated | |
46 | * "match" exactly? | |
47 | */ | |
48 | static int match_word(const char *word, int len, const char *match) | |
7c92fe0e | 49 | { |
695d95df JK |
50 | return !strncasecmp(word, match, len) && !match[len]; |
51 | } | |
52 | ||
17a4be26 JK |
53 | static int get_hex_color(const char *in, unsigned char *out) |
54 | { | |
55 | unsigned int val; | |
56 | val = (hexval(in[0]) << 4) | hexval(in[1]); | |
57 | if (val & ~0xff) | |
58 | return -1; | |
59 | *out = val; | |
60 | return 0; | |
61 | } | |
62 | ||
695d95df JK |
63 | static int parse_color(struct color *out, const char *name, int len) |
64 | { | |
65 | /* Positions in array must match ANSI color codes */ | |
7c92fe0e | 66 | static const char * const color_names[] = { |
695d95df | 67 | "black", "red", "green", "yellow", |
7c92fe0e JK |
68 | "blue", "magenta", "cyan", "white" |
69 | }; | |
70 | char *end; | |
71 | int i; | |
695d95df JK |
72 | long val; |
73 | ||
74 | /* First try the special word "normal"... */ | |
75 | if (match_word(name, len, "normal")) { | |
76 | out->type = COLOR_NORMAL; | |
77 | return 0; | |
78 | } | |
79 | ||
17a4be26 JK |
80 | /* Try a 24-bit RGB value */ |
81 | if (len == 7 && name[0] == '#') { | |
82 | if (!get_hex_color(name + 1, &out->red) && | |
83 | !get_hex_color(name + 3, &out->green) && | |
84 | !get_hex_color(name + 5, &out->blue)) { | |
85 | out->type = COLOR_RGB; | |
86 | return 0; | |
87 | } | |
88 | } | |
89 | ||
695d95df | 90 | /* Then pick from our human-readable color names... */ |
7c92fe0e | 91 | for (i = 0; i < ARRAY_SIZE(color_names); i++) { |
695d95df JK |
92 | if (match_word(name, len, color_names[i])) { |
93 | out->type = COLOR_ANSI; | |
94 | out->value = i; | |
95 | return 0; | |
96 | } | |
7c92fe0e | 97 | } |
695d95df JK |
98 | |
99 | /* And finally try a literal 256-color-mode number */ | |
100 | val = strtol(name, &end, 10); | |
101 | if (end - name == len) { | |
102 | /* | |
103 | * Allow "-1" as an alias for "normal", but other negative | |
104 | * numbers are bogus. | |
105 | */ | |
106 | if (val < -1) | |
107 | ; /* fall through to error */ | |
108 | else if (val < 0) { | |
109 | out->type = COLOR_NORMAL; | |
110 | return 0; | |
111 | /* Rewrite low numbers as more-portable standard colors. */ | |
112 | } else if (val < 8) { | |
113 | out->type = COLOR_ANSI; | |
114 | out->value = val; | |
3759d27a | 115 | return 0; |
695d95df JK |
116 | } else if (val < 256) { |
117 | out->type = COLOR_256; | |
118 | out->value = val; | |
119 | return 0; | |
120 | } | |
121 | } | |
122 | ||
123 | return -1; | |
7c92fe0e JK |
124 | } |
125 | ||
df8e472c | 126 | static int parse_attr(const char *name, size_t len) |
7c92fe0e | 127 | { |
df8e472c JK |
128 | static const struct { |
129 | const char *name; | |
130 | size_t len; | |
131 | int val, neg; | |
132 | } attrs[] = { | |
133 | #define ATTR(x, val, neg) { (x), sizeof(x)-1, (val), (neg) } | |
134 | ATTR("bold", 1, 22), | |
135 | ATTR("dim", 2, 22), | |
54590a0e | 136 | ATTR("italic", 3, 23), |
df8e472c JK |
137 | ATTR("ul", 4, 24), |
138 | ATTR("blink", 5, 25), | |
9dc3515c JK |
139 | ATTR("reverse", 7, 27), |
140 | ATTR("strike", 9, 29) | |
df8e472c | 141 | #undef ATTR |
7c92fe0e | 142 | }; |
df8e472c | 143 | int negate = 0; |
7c92fe0e | 144 | int i; |
df8e472c | 145 | |
5621068f JK |
146 | if (skip_prefix_mem(name, len, "no", &name, &len)) { |
147 | skip_prefix_mem(name, len, "-", &name, &len); | |
df8e472c | 148 | negate = 1; |
5621068f | 149 | } |
df8e472c JK |
150 | |
151 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { | |
152 | if (attrs[i].len == len && !memcmp(attrs[i].name, name, len)) | |
153 | return negate ? attrs[i].neg : attrs[i].val; | |
7c92fe0e JK |
154 | } |
155 | return -1; | |
156 | } | |
157 | ||
f6c5a296 | 158 | int color_parse(const char *value, char *dst) |
2c2dc7c8 | 159 | { |
f6c5a296 | 160 | return color_parse_mem(value, strlen(value), dst); |
2c2dc7c8 RS |
161 | } |
162 | ||
7ce4fb94 JK |
163 | void color_set(char *dst, const char *color_bytes) |
164 | { | |
165 | xsnprintf(dst, COLOR_MAXLEN, "%s", color_bytes); | |
166 | } | |
167 | ||
695d95df JK |
168 | /* |
169 | * Write the ANSI color codes for "c" to "out"; the string should | |
170 | * already have the ANSI escape code in it. "out" should have enough | |
171 | * space in it to fit any color. | |
172 | */ | |
cbc8feea | 173 | static char *color_output(char *out, int len, const struct color *c, char type) |
695d95df JK |
174 | { |
175 | switch (c->type) { | |
176 | case COLOR_UNSPECIFIED: | |
177 | case COLOR_NORMAL: | |
178 | break; | |
179 | case COLOR_ANSI: | |
cbc8feea JK |
180 | if (len < 2) |
181 | die("BUG: color parsing ran out of space"); | |
695d95df JK |
182 | *out++ = type; |
183 | *out++ = '0' + c->value; | |
184 | break; | |
185 | case COLOR_256: | |
cbc8feea | 186 | out += xsnprintf(out, len, "%c8;5;%d", type, c->value); |
695d95df | 187 | break; |
17a4be26 | 188 | case COLOR_RGB: |
cbc8feea JK |
189 | out += xsnprintf(out, len, "%c8;2;%d;%d;%d", type, |
190 | c->red, c->green, c->blue); | |
17a4be26 | 191 | break; |
695d95df JK |
192 | } |
193 | return out; | |
194 | } | |
195 | ||
196 | static int color_empty(const struct color *c) | |
197 | { | |
198 | return c->type <= COLOR_NORMAL; | |
199 | } | |
200 | ||
f6c5a296 | 201 | int color_parse_mem(const char *value, int value_len, char *dst) |
7c92fe0e JK |
202 | { |
203 | const char *ptr = value; | |
2c2dc7c8 | 204 | int len = value_len; |
cbc8feea | 205 | char *end = dst + COLOR_MAXLEN; |
8b124135 | 206 | unsigned int attr = 0; |
695d95df JK |
207 | struct color fg = { COLOR_UNSPECIFIED }; |
208 | struct color bg = { COLOR_UNSPECIFIED }; | |
7c92fe0e | 209 | |
c2f41bf5 NTND |
210 | if (!len) |
211 | return -1; | |
212 | ||
2c2dc7c8 | 213 | if (!strncasecmp(value, "reset", len)) { |
cbc8feea | 214 | xsnprintf(dst, end - dst, GIT_COLOR_RESET); |
f6c5a296 | 215 | return 0; |
7c92fe0e JK |
216 | } |
217 | ||
8b124135 | 218 | /* [fg [bg]] [attr]... */ |
2c2dc7c8 | 219 | while (len > 0) { |
7c92fe0e | 220 | const char *word = ptr; |
695d95df | 221 | struct color c; |
2c2dc7c8 | 222 | int val, wordlen = 0; |
7c92fe0e | 223 | |
2c2dc7c8 RS |
224 | while (len > 0 && !isspace(word[wordlen])) { |
225 | wordlen++; | |
226 | len--; | |
227 | } | |
7c92fe0e | 228 | |
2c2dc7c8 RS |
229 | ptr = word + wordlen; |
230 | while (len > 0 && isspace(*ptr)) { | |
7c92fe0e | 231 | ptr++; |
2c2dc7c8 RS |
232 | len--; |
233 | } | |
7c92fe0e | 234 | |
695d95df JK |
235 | if (!parse_color(&c, word, wordlen)) { |
236 | if (fg.type == COLOR_UNSPECIFIED) { | |
237 | fg = c; | |
7c92fe0e JK |
238 | continue; |
239 | } | |
695d95df JK |
240 | if (bg.type == COLOR_UNSPECIFIED) { |
241 | bg = c; | |
7c92fe0e JK |
242 | continue; |
243 | } | |
244 | goto bad; | |
245 | } | |
2c2dc7c8 | 246 | val = parse_attr(word, wordlen); |
8b124135 JH |
247 | if (0 <= val) |
248 | attr |= (1 << val); | |
249 | else | |
7c92fe0e | 250 | goto bad; |
7c92fe0e JK |
251 | } |
252 | ||
cbc8feea JK |
253 | #undef OUT |
254 | #define OUT(x) do { \ | |
255 | if (dst == end) \ | |
256 | die("BUG: color parsing ran out of space"); \ | |
257 | *dst++ = (x); \ | |
258 | } while(0) | |
259 | ||
695d95df | 260 | if (attr || !color_empty(&fg) || !color_empty(&bg)) { |
7c92fe0e | 261 | int sep = 0; |
8b124135 | 262 | int i; |
7c92fe0e | 263 | |
cbc8feea JK |
264 | OUT('\033'); |
265 | OUT('['); | |
8b124135 JH |
266 | |
267 | for (i = 0; attr; i++) { | |
268 | unsigned bit = (1 << i); | |
269 | if (!(attr & bit)) | |
270 | continue; | |
271 | attr &= ~bit; | |
272 | if (sep++) | |
cbc8feea JK |
273 | OUT(';'); |
274 | dst += xsnprintf(dst, end - dst, "%d", i); | |
7c92fe0e | 275 | } |
695d95df | 276 | if (!color_empty(&fg)) { |
7c92fe0e | 277 | if (sep++) |
cbc8feea | 278 | OUT(';'); |
71b59849 | 279 | /* foreground colors are all in the 3x range */ |
cbc8feea | 280 | dst = color_output(dst, end - dst, &fg, '3'); |
7c92fe0e | 281 | } |
695d95df | 282 | if (!color_empty(&bg)) { |
7c92fe0e | 283 | if (sep++) |
cbc8feea | 284 | OUT(';'); |
71b59849 | 285 | /* background colors are all in the 4x range */ |
cbc8feea | 286 | dst = color_output(dst, end - dst, &bg, '4'); |
7c92fe0e | 287 | } |
cbc8feea | 288 | OUT('m'); |
7c92fe0e | 289 | } |
cbc8feea | 290 | OUT(0); |
f6c5a296 | 291 | return 0; |
7c92fe0e | 292 | bad: |
f6c5a296 | 293 | return error(_("invalid color value: %.*s"), value_len, value); |
cbc8feea | 294 | #undef OUT |
7c92fe0e JK |
295 | } |
296 | ||
e269eb79 | 297 | int git_config_colorbool(const char *var, const char *value) |
7c92fe0e | 298 | { |
57f2b842 JH |
299 | if (value) { |
300 | if (!strcasecmp(value, "never")) | |
301 | return 0; | |
302 | if (!strcasecmp(value, "always")) | |
303 | return 1; | |
304 | if (!strcasecmp(value, "auto")) | |
daa0c3d9 | 305 | return GIT_COLOR_AUTO; |
7c92fe0e | 306 | } |
57f2b842 | 307 | |
73e9da01 ML |
308 | if (!var) |
309 | return -1; | |
310 | ||
57f2b842 JH |
311 | /* Missing or explicit false to turn off colorization */ |
312 | if (!git_config_bool(var, value)) | |
7c92fe0e | 313 | return 0; |
57f2b842 JH |
314 | |
315 | /* any normal truth value defaults to 'auto' */ | |
daa0c3d9 JK |
316 | return GIT_COLOR_AUTO; |
317 | } | |
318 | ||
319 | static int check_auto_color(void) | |
320 | { | |
e269eb79 JK |
321 | if (color_stdout_is_tty < 0) |
322 | color_stdout_is_tty = isatty(1); | |
323 | if (color_stdout_is_tty || (pager_in_use() && pager_use_color)) { | |
57f2b842 JH |
324 | char *term = getenv("TERM"); |
325 | if (term && strcmp(term, "dumb")) | |
326 | return 1; | |
327 | } | |
328 | return 0; | |
7c92fe0e JK |
329 | } |
330 | ||
daa0c3d9 JK |
331 | int want_color(int var) |
332 | { | |
333 | static int want_auto = -1; | |
334 | ||
c9bfb953 JK |
335 | if (var < 0) |
336 | var = git_use_color_default; | |
337 | ||
daa0c3d9 JK |
338 | if (var == GIT_COLOR_AUTO) { |
339 | if (want_auto < 0) | |
340 | want_auto = check_auto_color(); | |
341 | return want_auto; | |
342 | } | |
c9bfb953 | 343 | return var; |
daa0c3d9 JK |
344 | } |
345 | ||
3e1dd17a | 346 | int git_color_config(const char *var, const char *value, void *cb) |
6b2f2d98 MK |
347 | { |
348 | if (!strcmp(var, "color.ui")) { | |
e269eb79 | 349 | git_use_color_default = git_config_colorbool(var, value); |
6b2f2d98 MK |
350 | return 0; |
351 | } | |
352 | ||
3e1dd17a JK |
353 | return 0; |
354 | } | |
355 | ||
356 | int git_color_default_config(const char *var, const char *value, void *cb) | |
357 | { | |
358 | if (git_color_config(var, value, cb) < 0) | |
359 | return -1; | |
360 | ||
ef90d6d4 | 361 | return git_default_config(var, value, cb); |
6b2f2d98 MK |
362 | } |
363 | ||
becbdae8 JN |
364 | void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb) |
365 | { | |
366 | if (*color) | |
367 | fprintf(fp, "%s", color); | |
368 | fprintf(fp, "%s", sb->buf); | |
369 | if (*color) | |
370 | fprintf(fp, "%s", GIT_COLOR_RESET); | |
371 | } | |
372 | ||
f26a0012 | 373 | static int color_vfprintf(FILE *fp, const char *color, const char *fmt, |
7c92fe0e JK |
374 | va_list args, const char *trail) |
375 | { | |
376 | int r = 0; | |
377 | ||
378 | if (*color) | |
f26a0012 KH |
379 | r += fprintf(fp, "%s", color); |
380 | r += vfprintf(fp, fmt, args); | |
7c92fe0e | 381 | if (*color) |
dc6ebd4c | 382 | r += fprintf(fp, "%s", GIT_COLOR_RESET); |
7c92fe0e | 383 | if (trail) |
f26a0012 | 384 | r += fprintf(fp, "%s", trail); |
7c92fe0e JK |
385 | return r; |
386 | } | |
387 | ||
388 | ||
389 | ||
f26a0012 | 390 | int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) |
7c92fe0e JK |
391 | { |
392 | va_list args; | |
393 | int r; | |
394 | va_start(args, fmt); | |
f26a0012 | 395 | r = color_vfprintf(fp, color, fmt, args, NULL); |
7c92fe0e JK |
396 | va_end(args); |
397 | return r; | |
398 | } | |
399 | ||
f26a0012 | 400 | int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...) |
7c92fe0e JK |
401 | { |
402 | va_list args; | |
403 | int r; | |
404 | va_start(args, fmt); | |
f26a0012 | 405 | r = color_vfprintf(fp, color, fmt, args, "\n"); |
7c92fe0e JK |
406 | va_end(args); |
407 | return r; | |
408 | } | |
148135fc JK |
409 | |
410 | int color_is_nil(const char *c) | |
411 | { | |
412 | return !strcmp(c, "NIL"); | |
413 | } |