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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/kernel.h>
3#include "cache.h"
4#include "config.h"
5#include <stdlib.h>
6#include <stdio.h>
7#include "color.h"
8#include <math.h>
9#include <unistd.h>
10
11int perf_use_color_default = -1;
12
13int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
14{
15 if (value) {
16 if (!strcasecmp(value, "never"))
17 return 0;
18 if (!strcasecmp(value, "always"))
19 return 1;
20 if (!strcasecmp(value, "auto"))
21 goto auto_color;
22 }
23
24 /* Missing or explicit false to turn off colorization */
25 if (!perf_config_bool(var, value))
26 return 0;
27
28 /* any normal truth value defaults to 'auto' */
29 auto_color:
30 if (stdout_is_tty < 0)
31 stdout_is_tty = isatty(1);
32 if (stdout_is_tty || pager_in_use()) {
33 char *term = getenv("TERM");
34 if (term && strcmp(term, "dumb"))
35 return 1;
36 }
37 return 0;
38}
39
40int perf_color_default_config(const char *var, const char *value,
41 void *cb __maybe_unused)
42{
43 if (!strcmp(var, "color.ui")) {
44 perf_use_color_default = perf_config_colorbool(var, value, -1);
45 return 0;
46 }
47
48 return 0;
49}
50
51static int __color_vsnprintf(char *bf, size_t size, const char *color,
52 const char *fmt, va_list args, const char *trail)
53{
54 int r = 0;
55
56 /*
57 * Auto-detect:
58 */
59 if (perf_use_color_default < 0) {
60 if (isatty(1) || pager_in_use())
61 perf_use_color_default = 1;
62 else
63 perf_use_color_default = 0;
64 }
65
66 if (perf_use_color_default && *color)
67 r += scnprintf(bf, size, "%s", color);
68 r += vscnprintf(bf + r, size - r, fmt, args);
69 if (perf_use_color_default && *color)
70 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
71 if (trail)
72 r += scnprintf(bf + r, size - r, "%s", trail);
73 return r;
74}
75
76/* Colors are not included in return value */
77static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
78 va_list args)
79{
80 int r = 0;
81
82 /*
83 * Auto-detect:
84 */
85 if (perf_use_color_default < 0) {
86 if (isatty(fileno(fp)) || pager_in_use())
87 perf_use_color_default = 1;
88 else
89 perf_use_color_default = 0;
90 }
91
92 if (perf_use_color_default && *color)
93 fprintf(fp, "%s", color);
94 r += vfprintf(fp, fmt, args);
95 if (perf_use_color_default && *color)
96 fprintf(fp, "%s", PERF_COLOR_RESET);
97 return r;
98}
99
100int color_vsnprintf(char *bf, size_t size, const char *color,
101 const char *fmt, va_list args)
102{
103 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
104}
105
106int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
107{
108 return __color_vfprintf(fp, color, fmt, args);
109}
110
111int color_snprintf(char *bf, size_t size, const char *color,
112 const char *fmt, ...)
113{
114 va_list args;
115 int r;
116
117 va_start(args, fmt);
118 r = color_vsnprintf(bf, size, color, fmt, args);
119 va_end(args);
120 return r;
121}
122
123int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
124{
125 va_list args;
126 int r;
127
128 va_start(args, fmt);
129 r = color_vfprintf(fp, color, fmt, args);
130 va_end(args);
131 return r;
132}
133
134/*
135 * This function splits the buffer by newlines and colors the lines individually.
136 *
137 * Returns 0 on success.
138 */
139int color_fwrite_lines(FILE *fp, const char *color,
140 size_t count, const char *buf)
141{
142 if (!*color)
143 return fwrite(buf, count, 1, fp) != 1;
144
145 while (count) {
146 char *p = memchr(buf, '\n', count);
147
148 if (p != buf && (fputs(color, fp) < 0 ||
149 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
150 fputs(PERF_COLOR_RESET, fp) < 0))
151 return -1;
152 if (!p)
153 return 0;
154 if (fputc('\n', fp) < 0)
155 return -1;
156 count -= p + 1 - buf;
157 buf = p + 1;
158 }
159 return 0;
160}
161
162const char *get_percent_color(double percent)
163{
164 const char *color = PERF_COLOR_NORMAL;
165
166 /*
167 * We color high-overhead entries in red, mid-overhead
168 * entries in green - and keep the low overhead places
169 * normal:
170 */
171 if (fabs(percent) >= MIN_RED)
172 color = PERF_COLOR_RED;
173 else {
174 if (fabs(percent) > MIN_GREEN)
175 color = PERF_COLOR_GREEN;
176 }
177 return color;
178}
179
180int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
181{
182 int r;
183 const char *color;
184
185 color = get_percent_color(percent);
186 r = color_fprintf(fp, color, fmt, percent);
187
188 return r;
189}
190
191int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
192{
193 const char *color = get_percent_color(value);
194 return color_snprintf(bf, size, color, fmt, value);
195}
196
197int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
198{
199 va_list args;
200 double percent;
201
202 va_start(args, fmt);
203 percent = va_arg(args, double);
204 va_end(args);
205 return value_color_snprintf(bf, size, fmt, percent);
206}
207
208int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
209{
210 va_list args;
211 int len;
212 double percent;
213 const char *color;
214
215 va_start(args, fmt);
216 len = va_arg(args, int);
217 percent = va_arg(args, double);
218 va_end(args);
219
220 color = get_percent_color(percent);
221 return color_snprintf(bf, size, color, fmt, len, percent);
222}
1#include <linux/kernel.h>
2#include "cache.h"
3#include "config.h"
4#include <stdlib.h>
5#include <stdio.h>
6#include "color.h"
7#include <math.h>
8#include <unistd.h>
9
10int perf_use_color_default = -1;
11
12int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
13{
14 if (value) {
15 if (!strcasecmp(value, "never"))
16 return 0;
17 if (!strcasecmp(value, "always"))
18 return 1;
19 if (!strcasecmp(value, "auto"))
20 goto auto_color;
21 }
22
23 /* Missing or explicit false to turn off colorization */
24 if (!perf_config_bool(var, value))
25 return 0;
26
27 /* any normal truth value defaults to 'auto' */
28 auto_color:
29 if (stdout_is_tty < 0)
30 stdout_is_tty = isatty(1);
31 if (stdout_is_tty || pager_in_use()) {
32 char *term = getenv("TERM");
33 if (term && strcmp(term, "dumb"))
34 return 1;
35 }
36 return 0;
37}
38
39int perf_color_default_config(const char *var, const char *value,
40 void *cb __maybe_unused)
41{
42 if (!strcmp(var, "color.ui")) {
43 perf_use_color_default = perf_config_colorbool(var, value, -1);
44 return 0;
45 }
46
47 return 0;
48}
49
50static int __color_vsnprintf(char *bf, size_t size, const char *color,
51 const char *fmt, va_list args, const char *trail)
52{
53 int r = 0;
54
55 /*
56 * Auto-detect:
57 */
58 if (perf_use_color_default < 0) {
59 if (isatty(1) || pager_in_use())
60 perf_use_color_default = 1;
61 else
62 perf_use_color_default = 0;
63 }
64
65 if (perf_use_color_default && *color)
66 r += scnprintf(bf, size, "%s", color);
67 r += vscnprintf(bf + r, size - r, fmt, args);
68 if (perf_use_color_default && *color)
69 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
70 if (trail)
71 r += scnprintf(bf + r, size - r, "%s", trail);
72 return r;
73}
74
75/* Colors are not included in return value */
76static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
77 va_list args)
78{
79 int r = 0;
80
81 /*
82 * Auto-detect:
83 */
84 if (perf_use_color_default < 0) {
85 if (isatty(fileno(fp)) || pager_in_use())
86 perf_use_color_default = 1;
87 else
88 perf_use_color_default = 0;
89 }
90
91 if (perf_use_color_default && *color)
92 fprintf(fp, "%s", color);
93 r += vfprintf(fp, fmt, args);
94 if (perf_use_color_default && *color)
95 fprintf(fp, "%s", PERF_COLOR_RESET);
96 return r;
97}
98
99int color_vsnprintf(char *bf, size_t size, const char *color,
100 const char *fmt, va_list args)
101{
102 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
103}
104
105int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
106{
107 return __color_vfprintf(fp, color, fmt, args);
108}
109
110int color_snprintf(char *bf, size_t size, const char *color,
111 const char *fmt, ...)
112{
113 va_list args;
114 int r;
115
116 va_start(args, fmt);
117 r = color_vsnprintf(bf, size, color, fmt, args);
118 va_end(args);
119 return r;
120}
121
122int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
123{
124 va_list args;
125 int r;
126
127 va_start(args, fmt);
128 r = color_vfprintf(fp, color, fmt, args);
129 va_end(args);
130 return r;
131}
132
133/*
134 * This function splits the buffer by newlines and colors the lines individually.
135 *
136 * Returns 0 on success.
137 */
138int color_fwrite_lines(FILE *fp, const char *color,
139 size_t count, const char *buf)
140{
141 if (!*color)
142 return fwrite(buf, count, 1, fp) != 1;
143
144 while (count) {
145 char *p = memchr(buf, '\n', count);
146
147 if (p != buf && (fputs(color, fp) < 0 ||
148 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
149 fputs(PERF_COLOR_RESET, fp) < 0))
150 return -1;
151 if (!p)
152 return 0;
153 if (fputc('\n', fp) < 0)
154 return -1;
155 count -= p + 1 - buf;
156 buf = p + 1;
157 }
158 return 0;
159}
160
161const char *get_percent_color(double percent)
162{
163 const char *color = PERF_COLOR_NORMAL;
164
165 /*
166 * We color high-overhead entries in red, mid-overhead
167 * entries in green - and keep the low overhead places
168 * normal:
169 */
170 if (fabs(percent) >= MIN_RED)
171 color = PERF_COLOR_RED;
172 else {
173 if (fabs(percent) > MIN_GREEN)
174 color = PERF_COLOR_GREEN;
175 }
176 return color;
177}
178
179int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
180{
181 int r;
182 const char *color;
183
184 color = get_percent_color(percent);
185 r = color_fprintf(fp, color, fmt, percent);
186
187 return r;
188}
189
190int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
191{
192 const char *color = get_percent_color(value);
193 return color_snprintf(bf, size, color, fmt, value);
194}
195
196int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
197{
198 va_list args;
199 double percent;
200
201 va_start(args, fmt);
202 percent = va_arg(args, double);
203 va_end(args);
204 return value_color_snprintf(bf, size, fmt, percent);
205}
206
207int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
208{
209 va_list args;
210 int len;
211 double percent;
212 const char *color;
213
214 va_start(args, fmt);
215 len = va_arg(args, int);
216 percent = va_arg(args, double);
217 va_end(args);
218
219 color = get_percent_color(percent);
220 return color_snprintf(bf, size, color, fmt, len, percent);
221}