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