It is easy to detect whether or not the process is connected to a terminal, or piped to a file. Disable ANSI colours automatically when output is not to a terminal.
Signed-off-by: Simon Glass sjg@chromium.org --- Changes in v2: None
tools/patman/terminal.py | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/tools/patman/terminal.py b/tools/patman/terminal.py index 838c828..8fad06e 100644 --- a/tools/patman/terminal.py +++ b/tools/patman/terminal.py @@ -24,6 +24,12 @@ This module handles terminal interaction including ANSI color codes. """
+import os +import sys + +# Selection of when we want our output to be colored +COLOR_IF_TERMINAL, COLOR_ALWAYS, COLOR_NEVER = range(3) + class Color(object): """Conditionally wraps text in ANSI color escape sequences.""" BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8) @@ -32,14 +38,15 @@ class Color(object): BOLD_START = '\033[1m' RESET = '\033[0m'
- def __init__(self, enabled=True): + def __init__(self, colored=COLOR_IF_TERMINAL): """Create a new Color object, optionally disabling color output.
Args: enabled: True if color output should be enabled. If False then this class will not add color codes at all. """ - self._enabled = enabled + self._enabled = (colored == COLOR_ALWAYS or + (colored == COLOR_IF_TERMINAL and os.isatty(sys.stdout.fileno())))
def Start(self, color): """Returns a start color code.