1 #include <linux/kernel.h>
5 int perf_use_color_default = -1;
7 static int parse_color(const char *name, int len)
9 static const char * const color_names[] = {
10 "normal", "black", "red", "green", "yellow",
11 "blue", "magenta", "cyan", "white"
16 for (i = 0; i < (int)ARRAY_SIZE(color_names); i++) {
17 const char *str = color_names[i];
18 if (!strncasecmp(name, str, len) && !str[len])
21 i = strtol(name, &end, 10);
22 if (end - name == len && i >= -1 && i <= 255)
27 static int parse_attr(const char *name, int len)
29 static const int attr_values[] = { 1, 2, 4, 5, 7 };
30 static const char * const attr_names[] = {
31 "bold", "dim", "ul", "blink", "reverse"
35 for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
36 const char *str = attr_names[i];
37 if (!strncasecmp(name, str, len) && !str[len])
38 return attr_values[i];
43 void color_parse(const char *value, const char *var, char *dst)
45 color_parse_mem(value, strlen(value), var, dst);
48 void color_parse_mem(const char *value, int value_len, const char *var,
51 const char *ptr = value;
57 if (!strncasecmp(value, "reset", len)) {
58 strcpy(dst, PERF_COLOR_RESET);
62 /* [fg [bg]] [attr] */
64 const char *word = ptr;
67 while (len > 0 && !isspace(word[wordlen])) {
73 while (len > 0 && isspace(*ptr)) {
78 val = parse_color(word, wordlen);
90 val = parse_attr(word, wordlen);
91 if (val < 0 || attr != -1)
96 if (attr >= 0 || fg >= 0 || bg >= 0) {
112 dst += sprintf(dst, "38;5;%d", fg);
122 dst += sprintf(dst, "48;5;%d", bg);
130 die("bad color value '%.*s' for variable '%s'", value_len, value, var);
133 int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
136 if (!strcasecmp(value, "never"))
138 if (!strcasecmp(value, "always"))
140 if (!strcasecmp(value, "auto"))
144 /* Missing or explicit false to turn off colorization */
145 if (!perf_config_bool(var, value))
148 /* any normal truth value defaults to 'auto' */
150 if (stdout_is_tty < 0)
151 stdout_is_tty = isatty(1);
152 if (stdout_is_tty || (pager_in_use() && pager_use_color)) {
153 char *term = getenv("TERM");
154 if (term && strcmp(term, "dumb"))
160 int perf_color_default_config(const char *var, const char *value, void *cb)
162 if (!strcmp(var, "color.ui")) {
163 perf_use_color_default = perf_config_colorbool(var, value, -1);
167 return perf_default_config(var, value, cb);
170 static int __color_vsnprintf(char *bf, size_t size, const char *color,
171 const char *fmt, va_list args, const char *trail)
178 if (perf_use_color_default < 0) {
179 if (isatty(1) || pager_in_use())
180 perf_use_color_default = 1;
182 perf_use_color_default = 0;
185 if (perf_use_color_default && *color)
186 r += scnprintf(bf, size, "%s", color);
187 r += vscnprintf(bf + r, size - r, fmt, args);
188 if (perf_use_color_default && *color)
189 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
191 r += scnprintf(bf + r, size - r, "%s", trail);
195 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
196 va_list args, const char *trail)
203 if (perf_use_color_default < 0) {
204 if (isatty(fileno(fp)) || pager_in_use())
205 perf_use_color_default = 1;
207 perf_use_color_default = 0;
210 if (perf_use_color_default && *color)
211 r += fprintf(fp, "%s", color);
212 r += vfprintf(fp, fmt, args);
213 if (perf_use_color_default && *color)
214 r += fprintf(fp, "%s", PERF_COLOR_RESET);
216 r += fprintf(fp, "%s", trail);
220 int color_vsnprintf(char *bf, size_t size, const char *color,
221 const char *fmt, va_list args)
223 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
226 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
228 return __color_vfprintf(fp, color, fmt, args, NULL);
231 int color_snprintf(char *bf, size_t size, const char *color,
232 const char *fmt, ...)
238 r = color_vsnprintf(bf, size, color, fmt, args);
243 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
249 r = color_vfprintf(fp, color, fmt, args);
254 int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
259 r = __color_vfprintf(fp, color, fmt, args, "\n");
265 * This function splits the buffer by newlines and colors the lines individually.
267 * Returns 0 on success.
269 int color_fwrite_lines(FILE *fp, const char *color,
270 size_t count, const char *buf)
273 return fwrite(buf, count, 1, fp) != 1;
276 char *p = memchr(buf, '\n', count);
278 if (p != buf && (fputs(color, fp) < 0 ||
279 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
280 fputs(PERF_COLOR_RESET, fp) < 0))
284 if (fputc('\n', fp) < 0)
286 count -= p + 1 - buf;
292 const char *get_percent_color(double percent)
294 const char *color = PERF_COLOR_NORMAL;
297 * We color high-overhead entries in red, mid-overhead
298 * entries in green - and keep the low overhead places
301 if (percent >= MIN_RED)
302 color = PERF_COLOR_RED;
304 if (percent > MIN_GREEN)
305 color = PERF_COLOR_GREEN;
310 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
315 color = get_percent_color(percent);
316 r = color_fprintf(fp, color, fmt, percent);
321 int percent_color_snprintf(char *bf, size_t size, const char *fmt, double percent)
323 const char *color = get_percent_color(percent);
324 return color_snprintf(bf, size, color, fmt, percent);