tools/perf/util/color_config.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/kernel.h>
   3 #include <subcmd/pager.h>
   4 #include <string.h>
   5 #include "config.h"
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include "color.h"
   9 #include <math.h>
  10 #include <unistd.h>
  11
  12 int 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
  39 int 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 }