iptables/0135-iptables-test.py-print-with-color-escapes-only-when-.patch

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From aace6f5ac84d738f6b5f0ed1d56b3713b0435cc4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0t=C4=9Bp=C3=A1n=20N=C4=9Bmec?= <snemec@redhat.com>
Date: Thu, 2 Sep 2021 13:33:07 +0200
Subject: [PATCH] iptables-test.py: print with color escapes only when stdout
isatty
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When the output doesn't go to a terminal (typical case: log files),
the escape sequences are just noise.
Signed-off-by: Štěpán Němec <snemec@redhat.com>
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit b714d45dc4c2423d4df4cbf7ccf238ec441675ef)
---
iptables-test.py | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/iptables-test.py b/iptables-test.py
index 0d21f975305db..fb9503b6fffb4 100755
--- a/iptables-test.py
+++ b/iptables-test.py
@@ -32,22 +32,25 @@ EXTENSIONS_PATH = "extensions"
LOGFILE="/tmp/iptables-test.log"
log_file = None
+STDOUT_IS_TTY = sys.stdout.isatty()
-class Colors:
- HEADER = '\033[95m'
- BLUE = '\033[94m'
- GREEN = '\033[92m'
- YELLOW = '\033[93m'
- RED = '\033[91m'
- ENDC = '\033[0m'
+def maybe_colored(color, text):
+ terminal_sequences = {
+ 'green': '\033[92m',
+ 'red': '\033[91m',
+ }
+
+ return (
+ terminal_sequences[color] + text + '\033[0m' if STDOUT_IS_TTY else text
+ )
def print_error(reason, filename=None, lineno=None):
'''
Prints an error with nice colors, indicating file and line number.
'''
- print(filename + ": " + Colors.RED + "ERROR" +
- Colors.ENDC + ": line %d (%s)" % (lineno, reason), file=sys.stderr)
+ print(filename + ": " + maybe_colored('red', "ERROR") +
+ ": line %d (%s)" % (lineno, reason), file=sys.stderr)
def delete_rule(iptables, rule, filename, lineno):
@@ -282,7 +285,7 @@ log_file = None
if netns:
execute_cmd("ip netns del ____iptables-container-test", filename, 0)
if total_test_passed:
- print(filename + ": " + Colors.GREEN + "OK" + Colors.ENDC)
+ print(filename + ": " + maybe_colored('green', "OK"))
f.close()
return tests, passed
--
2.40.0