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// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <subcmd/pager.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "color.h"
#include <math.h>
#include <unistd.h>
int perf_use_color_default = -1;
static int __color_vsnprintf(char *bf, size_t size, const char *color,
const char *fmt, va_list args, const char *trail)
{
int r = 0;
/*
* Auto-detect:
*/
if (perf_use_color_default < 0) {
if (isatty(1) || pager_in_use())
perf_use_color_default = 1;
else
perf_use_color_default = 0;
}
if (perf_use_color_default && *color)
r += scnprintf(bf, size, "%s", color);
r += vscnprintf(bf + r, size - r, fmt, args);
if (perf_use_color_default && *color)
r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
if (trail)
r += scnprintf(bf + r, size - r, "%s", trail);
return r;
}
/* Colors are not included in return value */
static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
va_list args)
{
int r = 0;
/*
* Auto-detect:
*/
if (perf_use_color_default < 0) {
if (isatty(fileno(fp)) || pager_in_use())
perf_use_color_default = 1;
else
perf_use_color_default = 0;
}
if (perf_use_color_default && *color)
fprintf(fp, "%s", color);
r += vfprintf(fp, fmt, args);
if (perf_use_color_default && *color)
fprintf(fp, "%s", PERF_COLOR_RESET);
return r;
}
int color_vsnprintf(char *bf, size_t size, const char *color,
const char *fmt, va_list args)
{
return __color_vsnprintf(bf, size, color, fmt, args, NULL);
}
int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
{
return __color_vfprintf(fp, color, fmt, args);
}
int color_snprintf(char *bf, size_t size, const char *color,
const char *fmt, ...)
{
va_list args;
int r;
va_start(args, fmt);
r = color_vsnprintf(bf, size, color, fmt, args);
va_end(args);
return r;
}
int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
{
va_list args;
int r;
va_start(args, fmt);
r = color_vfprintf(fp, color, fmt, args);
va_end(args);
return r;
}
const char *get_percent_color(double percent)
{
const char *color = PERF_COLOR_NORMAL;
/*
* We color high-overhead entries in red, mid-overhead
* entries in green - and keep the low overhead places
* normal:
*/
if (fabs(percent) >= MIN_RED)
color = PERF_COLOR_RED;
else {
if (fabs(percent) > MIN_GREEN)
color = PERF_COLOR_GREEN;
}
return color;
}
int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
{
int r;
const char *color;
color = get_percent_color(percent);
r = color_fprintf(fp, color, fmt, percent);
return r;
}
int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
{
const char *color = get_percent_color(value);
return color_snprintf(bf, size, color, fmt, value);
}
int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
{
va_list args;
double percent;
va_start(args, fmt);
percent = va_arg(args, double);
va_end(args);
return value_color_snprintf(bf, size, fmt, percent);
}
int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
{
va_list args;
int len;
double percent;
const char *color;
va_start(args, fmt);
len = va_arg(args, int);
percent = va_arg(args, double);
va_end(args);
color = get_percent_color(percent);
return color_snprintf(bf, size, color, fmt, len, percent);
}
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