4 static int git_use_color_default
= GIT_COLOR_AUTO
;
5 int color_stdout_is_tty
= -1;
8 * The list of available column colors.
10 const char *column_colors_ansi
[] = {
19 GIT_COLOR_BOLD_YELLOW
,
21 GIT_COLOR_BOLD_MAGENTA
,
26 /* Ignore the RESET at the end when giving the size */
27 const int column_colors_ansi_max
= ARRAY_SIZE(column_colors_ansi
) - 1;
29 /* An individual foreground or background color. */
32 COLOR_UNSPECIFIED
= 0,
34 COLOR_ANSI
, /* basic 0-7 ANSI colors */
38 /* The numeric value for ANSI and 256-color modes */
40 /* 24-bit RGB color values */
41 unsigned char red
, green
, blue
;
45 * "word" is a buffer of length "len"; does it match the NUL-terminated
48 static int match_word(const char *word
, int len
, const char *match
)
50 return !strncasecmp(word
, match
, len
) && !match
[len
];
53 static int get_hex_color(const char *in
, unsigned char *out
)
56 val
= (hexval(in
[0]) << 4) | hexval(in
[1]);
63 static int parse_color(struct color
*out
, const char *name
, int len
)
65 /* Positions in array must match ANSI color codes */
66 static const char * const color_names
[] = {
67 "black", "red", "green", "yellow",
68 "blue", "magenta", "cyan", "white"
74 /* First try the special word "normal"... */
75 if (match_word(name
, len
, "normal")) {
76 out
->type
= COLOR_NORMAL
;
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
;
90 /* Then pick from our human-readable color names... */
91 for (i
= 0; i
< ARRAY_SIZE(color_names
); i
++) {
92 if (match_word(name
, len
, color_names
[i
])) {
93 out
->type
= COLOR_ANSI
;
99 /* And finally try a literal 256-color-mode number */
100 val
= strtol(name
, &end
, 10);
101 if (end
- name
== len
) {
103 * Allow "-1" as an alias for "normal", but other negative
107 ; /* fall through to error */
109 out
->type
= COLOR_NORMAL
;
111 /* Rewrite low numbers as more-portable standard colors. */
112 } else if (val
< 8) {
113 out
->type
= COLOR_ANSI
;
116 } else if (val
< 256) {
117 out
->type
= COLOR_256
;
126 static int parse_attr(const char *name
, size_t len
)
128 static const struct {
133 #define ATTR(x, val, neg) { (x), sizeof(x)-1, (val), (neg) }
136 ATTR("italic", 3, 23),
138 ATTR("blink", 5, 25),
139 ATTR("reverse", 7, 27),
140 ATTR("strike", 9, 29)
146 if (skip_prefix_mem(name
, len
, "no", &name
, &len
)) {
147 skip_prefix_mem(name
, len
, "-", &name
, &len
);
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
;
158 int color_parse(const char *value
, char *dst
)
160 return color_parse_mem(value
, strlen(value
), dst
);
164 * Write the ANSI color codes for "c" to "out"; the string should
165 * already have the ANSI escape code in it. "out" should have enough
166 * space in it to fit any color.
168 static char *color_output(char *out
, const struct color
*c
, char type
)
171 case COLOR_UNSPECIFIED
:
176 *out
++ = '0' + c
->value
;
179 out
+= sprintf(out
, "%c8;5;%d", type
, c
->value
);
182 out
+= sprintf(out
, "%c8;2;%d;%d;%d", type
,
183 c
->red
, c
->green
, c
->blue
);
189 static int color_empty(const struct color
*c
)
191 return c
->type
<= COLOR_NORMAL
;
194 int color_parse_mem(const char *value
, int value_len
, char *dst
)
196 const char *ptr
= value
;
198 unsigned int attr
= 0;
199 struct color fg
= { COLOR_UNSPECIFIED
};
200 struct color bg
= { COLOR_UNSPECIFIED
};
202 if (!strncasecmp(value
, "reset", len
)) {
203 strcpy(dst
, GIT_COLOR_RESET
);
207 /* [fg [bg]] [attr]... */
209 const char *word
= ptr
;
211 int val
, wordlen
= 0;
213 while (len
> 0 && !isspace(word
[wordlen
])) {
218 ptr
= word
+ wordlen
;
219 while (len
> 0 && isspace(*ptr
)) {
224 if (!parse_color(&c
, word
, wordlen
)) {
225 if (fg
.type
== COLOR_UNSPECIFIED
) {
229 if (bg
.type
== COLOR_UNSPECIFIED
) {
235 val
= parse_attr(word
, wordlen
);
242 if (attr
|| !color_empty(&fg
) || !color_empty(&bg
)) {
249 for (i
= 0; attr
; i
++) {
250 unsigned bit
= (1 << i
);
256 dst
+= sprintf(dst
, "%d", i
);
258 if (!color_empty(&fg
)) {
261 /* foreground colors are all in the 3x range */
262 dst
= color_output(dst
, &fg
, '3');
264 if (!color_empty(&bg
)) {
267 /* background colors are all in the 4x range */
268 dst
= color_output(dst
, &bg
, '4');
275 return error(_("invalid color value: %.*s"), value_len
, value
);
278 int git_config_colorbool(const char *var
, const char *value
)
281 if (!strcasecmp(value
, "never"))
283 if (!strcasecmp(value
, "always"))
285 if (!strcasecmp(value
, "auto"))
286 return GIT_COLOR_AUTO
;
292 /* Missing or explicit false to turn off colorization */
293 if (!git_config_bool(var
, value
))
296 /* any normal truth value defaults to 'auto' */
297 return GIT_COLOR_AUTO
;
300 static int check_auto_color(void)
302 if (color_stdout_is_tty
< 0)
303 color_stdout_is_tty
= isatty(1);
304 if (color_stdout_is_tty
|| (pager_in_use() && pager_use_color
)) {
305 char *term
= getenv("TERM");
306 if (term
&& strcmp(term
, "dumb"))
312 int want_color(int var
)
314 static int want_auto
= -1;
317 var
= git_use_color_default
;
319 if (var
== GIT_COLOR_AUTO
) {
321 want_auto
= check_auto_color();
327 int git_color_config(const char *var
, const char *value
, void *cb
)
329 if (!strcmp(var
, "color.ui")) {
330 git_use_color_default
= git_config_colorbool(var
, value
);
337 int git_color_default_config(const char *var
, const char *value
, void *cb
)
339 if (git_color_config(var
, value
, cb
) < 0)
342 return git_default_config(var
, value
, cb
);
345 void color_print_strbuf(FILE *fp
, const char *color
, const struct strbuf
*sb
)
348 fprintf(fp
, "%s", color
);
349 fprintf(fp
, "%s", sb
->buf
);
351 fprintf(fp
, "%s", GIT_COLOR_RESET
);
354 static int color_vfprintf(FILE *fp
, const char *color
, const char *fmt
,
355 va_list args
, const char *trail
)
360 r
+= fprintf(fp
, "%s", color
);
361 r
+= vfprintf(fp
, fmt
, args
);
363 r
+= fprintf(fp
, "%s", GIT_COLOR_RESET
);
365 r
+= fprintf(fp
, "%s", trail
);
371 int color_fprintf(FILE *fp
, const char *color
, const char *fmt
, ...)
376 r
= color_vfprintf(fp
, color
, fmt
, args
, NULL
);
381 int color_fprintf_ln(FILE *fp
, const char *color
, const char *fmt
, ...)
386 r
= color_vfprintf(fp
, color
, fmt
, args
, "\n");
391 int color_is_nil(const char *c
)
393 return !strcmp(c
, "NIL");