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perf_counter tools: Dont output in color on !tty 

Dont emit ASCII color characters if the terminal is not a tty,
such as when perf report gets redirected into a file.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-06-04 15:40:25 +02:00
parent 8fc0321f1a
commit 13d0ab5ec2
1 changed files with 14 additions and 3 deletions
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17
Documentation/perf_counter/util/color.c
View File

@ -1,7 +1,7 @@
#include "cache.h"
#include "color.h"
int perf_use_color_default = 0;
int perf_use_color_default = -1;
static int parse_color(const char *name, int len)
{
@ -169,10 +169,20 @@ static int color_vfprintf(FILE *fp, const char *color, const char *fmt,
{
int r = 0;
if (*color)
/*
* 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 += fprintf(fp, "%s", color);
r += vfprintf(fp, fmt, args);
if (*color)
if (perf_use_color_default && *color)
r += fprintf(fp, "%s", PERF_COLOR_RESET);
if (trail)
r += fprintf(fp, "%s", trail);
@ -185,6 +195,7 @@ 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, NULL);
va_end(args);