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1 | #include <linux/kernel.h> |
2 | #include "cache.h" |
3 | #include "color.h" |
4 | |
5 | int perf_use_color_default = -1; |
6 | |
7 | static int parse_color(const char *name, int len) |
8 | { |
9 | static const char * const color_names[] = { |
10 | "normal", "black", "red", "green", "yellow", |
11 | "blue", "magenta", "cyan", "white" |
12 | }; |
13 | char *end; |
14 | int i; |
15 | |
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]) |
19 | return i - 1; |
20 | } |
21 | i = strtol(name, &end, 10); |
22 | if (end - name == len && i >= -1 && i <= 255) |
23 | return i; |
24 | return -2; |
25 | } |
26 | |
27 | static int parse_attr(const char *name, int len) |
28 | { |
29 | static const int attr_values[] = { 1, 2, 4, 5, 7 }; |
30 | static const char * const attr_names[] = { |
31 | "bold", "dim", "ul", "blink", "reverse" |
32 | }; |
33 | unsigned int i; |
34 | |
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]; |
39 | } |
40 | return -1; |
41 | } |
42 | |
43 | void color_parse(const char *value, const char *var, char *dst) |
44 | { |
45 | color_parse_mem(value, strlen(value), var, dst); |
46 | } |
47 | |
48 | void color_parse_mem(const char *value, int value_len, const char *var, |
49 | char *dst) |
50 | { |
51 | const char *ptr = value; |
52 | int len = value_len; |
53 | int attr = -1; |
54 | int fg = -2; |
55 | int bg = -2; |
56 | |
57 | if (!strncasecmp(value, "reset", len)) { |
58 | strcpy(dst, PERF_COLOR_RESET); |
59 | return; |
60 | } |
61 | |
62 | /* [fg [bg]] [attr] */ |
63 | while (len > 0) { |
64 | const char *word = ptr; |
65 | int val, wordlen = 0; |
66 | |
67 | while (len > 0 && !isspace(word[wordlen])) { |
68 | wordlen++; |
69 | len--; |
70 | } |
71 | |
72 | ptr = word + wordlen; |
73 | while (len > 0 && isspace(*ptr)) { |
74 | ptr++; |
75 | len--; |
76 | } |
77 | |
78 | val = parse_color(word, wordlen); |
79 | if (val >= -1) { |
80 | if (fg == -2) { |
81 | fg = val; |
82 | continue; |
83 | } |
84 | if (bg == -2) { |
85 | bg = val; |
86 | continue; |
87 | } |
88 | goto bad; |
89 | } |
90 | val = parse_attr(word, wordlen); |
91 | if (val < 0 || attr != -1) |
92 | goto bad; |
93 | attr = val; |
94 | } |
95 | |
96 | if (attr >= 0 || fg >= 0 || bg >= 0) { |
97 | int sep = 0; |
98 | |
99 | *dst++ = '\033'; |
100 | *dst++ = '['; |
101 | if (attr >= 0) { |
102 | *dst++ = '0' + attr; |
103 | sep++; |
104 | } |
105 | if (fg >= 0) { |
106 | if (sep++) |
107 | *dst++ = ';'; |
108 | if (fg < 8) { |
109 | *dst++ = '3'; |
110 | *dst++ = '0' + fg; |
111 | } else { |
112 | dst += sprintf(dst, "38;5;%d", fg); |
113 | } |
114 | } |
115 | if (bg >= 0) { |
116 | if (sep++) |
117 | *dst++ = ';'; |
118 | if (bg < 8) { |
119 | *dst++ = '4'; |
120 | *dst++ = '0' + bg; |
121 | } else { |
122 | dst += sprintf(dst, "48;5;%d", bg); |
123 | } |
124 | } |
125 | *dst++ = 'm'; |
126 | } |
127 | *dst = 0; |
128 | return; |
129 | bad: |
130 | die("bad color value '%.*s' for variable '%s'", value_len, value, var); |
131 | } |
132 | |
133 | int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty) |
134 | { |
135 | if (value) { |
136 | if (!strcasecmp(value, "never")) |
137 | return 0; |
138 | if (!strcasecmp(value, "always")) |
139 | return 1; |
140 | if (!strcasecmp(value, "auto")) |
141 | goto auto_color; |
142 | } |
143 | |
144 | /* Missing or explicit false to turn off colorization */ |
145 | if (!perf_config_bool(var, value)) |
146 | return 0; |
147 | |
148 | /* any normal truth value defaults to 'auto' */ |
149 | auto_color: |
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")) |
155 | return 1; |
156 | } |
157 | return 0; |
158 | } |
159 | |
160 | int perf_color_default_config(const char *var, const char *value, void *cb) |
161 | { |
162 | if (!strcmp(var, "color.ui")) { |
163 | perf_use_color_default = perf_config_colorbool(var, value, -1); |
164 | return 0; |
165 | } |
166 | |
167 | return perf_default_config(var, value, cb); |
168 | } |
169 | |
170 | static int __color_vsnprintf(char *bf, size_t size, const char *color, |
171 | const char *fmt, va_list args, const char *trail) |
172 | { |
173 | int r = 0; |
174 | |
175 | /* |
176 | * Auto-detect: |
177 | */ |
178 | if (perf_use_color_default < 0) { |
179 | if (isatty(1) || pager_in_use()) |
180 | perf_use_color_default = 1; |
181 | else |
182 | perf_use_color_default = 0; |
183 | } |
184 | |
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); |
190 | if (trail) |
191 | r += scnprintf(bf + r, size - r, "%s", trail); |
192 | return r; |
193 | } |
194 | |
195 | static int __color_vfprintf(FILE *fp, const char *color, const char *fmt, |
196 | va_list args, const char *trail) |
197 | { |
198 | int r = 0; |
199 | |
200 | /* |
201 | * Auto-detect: |
202 | */ |
203 | if (perf_use_color_default < 0) { |
204 | if (isatty(fileno(fp)) || pager_in_use()) |
205 | perf_use_color_default = 1; |
206 | else |
207 | perf_use_color_default = 0; |
208 | } |
209 | |
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); |
215 | if (trail) |
216 | r += fprintf(fp, "%s", trail); |
217 | return r; |
218 | } |
219 | |
220 | int color_vsnprintf(char *bf, size_t size, const char *color, |
221 | const char *fmt, va_list args) |
222 | { |
223 | return __color_vsnprintf(bf, size, color, fmt, args, NULL); |
224 | } |
225 | |
226 | int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args) |
227 | { |
228 | return __color_vfprintf(fp, color, fmt, args, NULL); |
229 | } |
230 | |
231 | int color_snprintf(char *bf, size_t size, const char *color, |
232 | const char *fmt, ...) |
233 | { |
234 | va_list args; |
235 | int r; |
236 | |
237 | va_start(args, fmt); |
238 | r = color_vsnprintf(bf, size, color, fmt, args); |
239 | va_end(args); |
240 | return r; |
241 | } |
242 | |
243 | int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) |
244 | { |
245 | va_list args; |
246 | int r; |
247 | |
248 | va_start(args, fmt); |
249 | r = color_vfprintf(fp, color, fmt, args); |
250 | va_end(args); |
251 | return r; |
252 | } |
253 | |
254 | int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...) |
255 | { |
256 | va_list args; |
257 | int r; |
258 | va_start(args, fmt); |
259 | r = __color_vfprintf(fp, color, fmt, args, "\n"); |
260 | va_end(args); |
261 | return r; |
262 | } |
263 | |
264 | /* |
265 | * This function splits the buffer by newlines and colors the lines individually. |
266 | * |
267 | * Returns 0 on success. |
268 | */ |
269 | int color_fwrite_lines(FILE *fp, const char *color, |
270 | size_t count, const char *buf) |
271 | { |
272 | if (!*color) |
273 | return fwrite(buf, count, 1, fp) != 1; |
274 | |
275 | while (count) { |
276 | char *p = memchr(buf, '\n', count); |
277 | |
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)) |
281 | return -1; |
282 | if (!p) |
283 | return 0; |
284 | if (fputc('\n', fp) < 0) |
285 | return -1; |
286 | count -= p + 1 - buf; |
287 | buf = p + 1; |
288 | } |
289 | return 0; |
290 | } |
291 | |
292 | const char *get_percent_color(double percent) |
293 | { |
294 | const char *color = PERF_COLOR_NORMAL; |
295 | |
296 | /* |
297 | * We color high-overhead entries in red, mid-overhead |
298 | * entries in green - and keep the low overhead places |
299 | * normal: |
300 | */ |
301 | if (percent >= MIN_RED) |
302 | color = PERF_COLOR_RED; |
303 | else { |
304 | if (percent > MIN_GREEN) |
305 | color = PERF_COLOR_GREEN; |
306 | } |
307 | return color; |
308 | } |
309 | |
310 | int percent_color_fprintf(FILE *fp, const char *fmt, double percent) |
311 | { |
312 | int r; |
313 | const char *color; |
314 | |
315 | color = get_percent_color(percent); |
316 | r = color_fprintf(fp, color, fmt, percent); |
317 | |
318 | return r; |
319 | } |
320 | |
321 | int percent_color_snprintf(char *bf, size_t size, const char *fmt, double percent) |
322 | { |
323 | const char *color = get_percent_color(percent); |
324 | return color_snprintf(bf, size, color, fmt, percent); |
325 | } |
326 |
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Tags:
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