tools, scripts: refactor error-out statements of Python scripts
In Python, sys.exit() function can also take an object other
than an integer.
If an integer is given to the argument, Python exits with the return
code of it. If a non-integer argument is given, Python outputs it
to stderr and exits with the return code of 1.
That means,
print >> sys.stderr, "Blah Blah"
sys.exit(1)
is equivalent to
sys.exit("Blah Blah")
The latter is a useful shorthand.
Note:
Some error messages in Buildman and Patman were output to stdout.
But they should go to stderr. They are also fixed by this commit.
This is a nice side effect.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/genboardscfg.py b/tools/genboardscfg.py
index 734d90b..99e4e87 100755
--- a/tools/genboardscfg.py
+++ b/tools/genboardscfg.py
@@ -77,16 +77,14 @@
"""Exit if we are not at the top of source directory."""
for f in ('README', 'Licenses'):
if not os.path.exists(f):
- print >> sys.stderr, 'Please run at the top of source directory.'
- sys.exit(1)
+ sys.exit('Please run at the top of source directory.')
def get_make_cmd():
"""Get the command name of GNU Make."""
process = subprocess.Popen([SHOW_GNU_MAKE], stdout=subprocess.PIPE)
ret = process.communicate()
if process.returncode:
- print >> sys.stderr, 'GNU Make not found'
- sys.exit(1)
+ sys.exit('GNU Make not found')
return ret[0].rstrip()
### classes ###
@@ -209,9 +207,7 @@
# sanity check of '.config' file
for field in self.must_fields:
if not field in fields:
- print >> sys.stderr, 'Error: %s is not defined in %s' % \
- (field, defconfig)
- sys.exit(1)
+ sys.exit('Error: %s is not defined in %s' % (field, defconfig))
# fix-up for aarch64 and tegra
if fields['arch'] == 'arm' and 'cpu' in fields:
@@ -455,8 +451,7 @@
# wait until the reformat tool finishes
reformat_process.communicate()
if reformat_process.returncode != 0:
- print >> sys.stderr, '"%s" failed' % REFORMAT_CMD[0]
- sys.exit(1)
+ sys.exit('"%s" failed' % REFORMAT_CMD[0])
def gen_boards_cfg(jobs):
"""Generate boards.cfg file.
@@ -489,8 +484,7 @@
try:
jobs = int(options.jobs)
except ValueError:
- print >> sys.stderr, 'Option -j (--jobs) takes a number'
- sys.exit(1)
+ sys.exit('Option -j (--jobs) takes a number')
else:
try:
jobs = int(subprocess.Popen(['getconf', '_NPROCESSORS_ONLN'],