[OE-core] [PATCH 1/2] combo-layer: runcmd() with separate output
Patrick Ohly
patrick.ohly at intel.com
Tue Mar 10 10:10:48 UTC 2015
Allow the caller to specify a separate output stream. stderr is always
a temporary file opened by runcmd(), so read from that to capture
output for error reporting *and* the return value.
The reasoning for the latter is a) that this preserves the traditional
behavior when out=None and b) if the caller wants the content of
stdout, it can read from the stream itself, which is not possible for
the temporary stderr.
Signed-off-by: Patrick Ohly <patrick.ohly at intel.com>
---
scripts/combo-layer | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/scripts/combo-layer b/scripts/combo-layer
index 5f10e83..fb3fb50 100755
--- a/scripts/combo-layer
+++ b/scripts/combo-layer
@@ -149,23 +149,27 @@ class Configuration(object):
logger.error("ERROR: patchutils package is missing, please install it (e.g. # apt-get install patchutils)")
sys.exit(1)
-def runcmd(cmd,destdir=None,printerr=True):
+def runcmd(cmd,destdir=None,printerr=True,out=None):
"""
execute command, raise CalledProcessError if fail
return output if succeed
"""
logger.debug("run cmd '%s' in %s" % (cmd, os.getcwd() if destdir is None else destdir))
- out = os.tmpfile()
+ if not out:
+ out = os.tmpfile()
+ err = out
+ else:
+ err = os.tmpfile()
try:
- subprocess.check_call(cmd, stdout=out, stderr=out, cwd=destdir, shell=True)
+ subprocess.check_call(cmd, stdout=out, stderr=err, cwd=destdir, shell=isinstance(cmd, str))
except subprocess.CalledProcessError,e:
- out.seek(0)
+ err.seek(0)
if printerr:
- logger.error("%s" % out.read())
+ logger.error("%s" % err.read())
raise e
- out.seek(0)
- output = out.read()
+ err.seek(0)
+ output = err.read()
logger.debug("output: %s" % output )
return output
--
2.1.4
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