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;
115 } else if (val < 256) {
116 out->type = COLOR_256;
125 static int parse_attr(const char *name, int len)
127 static const int attr_values[] = { 1, 2, 4, 5, 7,
128 22, 22, 24, 25, 27 };
129 static const char * const attr_names[] = {
130 "bold", "dim", "ul", "blink", "reverse",
131 "nobold", "nodim", "noul", "noblink", "noreverse"
134 for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
135 const char *str = attr_names[i];
136 if (!strncasecmp(name, str, len) && !str[len])
137 return attr_values[i];
142 int color_parse(const char *value, char *dst)
144 return color_parse_mem(value, strlen(value), dst);
148 * Write the ANSI color codes for "c" to "out"; the string should
149 * already have the ANSI escape code in it. "out" should have enough
150 * space in it to fit any color.
152 static char *color_output(char *out, const struct color *c, char type)
155 case COLOR_UNSPECIFIED:
160 *out++ = '0' + c->value;
163 out += sprintf(out, "%c8;5;%d", type, c->value);
166 out += sprintf(out, "%c8;2;%d;%d;%d", type,
167 c->red, c->green, c->blue);
173 static int color_empty(const struct color *c)
175 return c->type <= COLOR_NORMAL;
178 int color_parse_mem(const char *value, int value_len, char *dst)
180 const char *ptr = value;
182 unsigned int attr = 0;
183 struct color fg = { COLOR_UNSPECIFIED };
184 struct color bg = { COLOR_UNSPECIFIED };
186 if (!strncasecmp(value, "reset", len)) {
187 strcpy(dst, GIT_COLOR_RESET);
191 /* [fg [bg]] [attr]... */
193 const char *word = ptr;
195 int val, wordlen = 0;
197 while (len > 0 && !isspace(word[wordlen])) {
202 ptr = word + wordlen;
203 while (len > 0 && isspace(*ptr)) {
208 if (!parse_color(&c, word, wordlen)) {
209 if (fg.type == COLOR_UNSPECIFIED) {
213 if (bg.type == COLOR_UNSPECIFIED) {
219 val = parse_attr(word, wordlen);
226 if (attr || !color_empty(&fg) || !color_empty(&bg)) {
233 for (i = 0; attr; i++) {
234 unsigned bit = (1 << i);
240 dst += sprintf(dst, "%d", i);
242 if (!color_empty(&fg)) {
245 /* foreground colors are all in the 3x range */
246 dst = color_output(dst, &fg, '3');
248 if (!color_empty(&bg)) {
251 /* background colors are all in the 4x range */
252 dst = color_output(dst, &bg, '4');
259 return error(_("invalid color value: %.*s"), value_len, value);
262 int git_config_colorbool(const char *var, const char *value)
265 if (!strcasecmp(value, "never"))
267 if (!strcasecmp(value, "always"))
269 if (!strcasecmp(value, "auto"))
270 return GIT_COLOR_AUTO;
276 /* Missing or explicit false to turn off colorization */
277 if (!git_config_bool(var, value))
280 /* any normal truth value defaults to 'auto' */
281 return GIT_COLOR_AUTO;
284 static int check_auto_color(void)
286 if (color_stdout_is_tty < 0)
287 color_stdout_is_tty = isatty(1);
288 if (color_stdout_is_tty || (pager_in_use() && pager_use_color)) {
289 char *term = getenv("TERM");
290 if (term && strcmp(term, "dumb"))
296 int want_color(int var)
298 static int want_auto = -1;
301 var = git_use_color_default;
303 if (var == GIT_COLOR_AUTO) {
305 want_auto = check_auto_color();
311 int git_color_config(const char *var, const char *value, void *cb)
313 if (!strcmp(var, "color.ui")) {
314 git_use_color_default = git_config_colorbool(var, value);
321 int git_color_default_config(const char *var, const char *value, void *cb)
323 if (git_color_config(var, value, cb) < 0)
326 return git_default_config(var, value, cb);
329 void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb)
332 fprintf(fp, "%s", color);
333 fprintf(fp, "%s", sb->buf);
335 fprintf(fp, "%s", GIT_COLOR_RESET);
338 static int color_vfprintf(FILE *fp, const char *color, const char *fmt,
339 va_list args, const char *trail)
344 r += fprintf(fp, "%s", color);
345 r += vfprintf(fp, fmt, args);
347 r += fprintf(fp, "%s", GIT_COLOR_RESET);
349 r += fprintf(fp, "%s", trail);
355 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
360 r = color_vfprintf(fp, color, fmt, args, NULL);
365 int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
370 r = color_vfprintf(fp, color, fmt, args, "\n");
375 int color_is_nil(const char *c)
377 return !strcmp(c, "NIL");