At present cros_subprocess and the tools library use a string to obtain
stdout from a program. This works fine on Python 2. With Python 3 we end
up with unicode errors in some cases. Fix this by providing a binary mode,
which returns the data as bytes() instead of a string.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present this function uses lists and strings. This does not work so
well with Python 3, and testing against '' does not work for a bytearray.
Update the code to fix these issues.
Signed-off-by: Simon Glass <sjg@chromium.org>
The communication filter reads data in blocks and converts each block to
unicode (if necessary) one at a time. In the unlikely event that a unicode
character in the input spans a block this will not work. We get an error
like:
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 1022-1023:
unexpected end of data
There is no need to change the input to unicode, so the easiest fix is to
drop this feature.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
os.read() returns a byte array in Python 3.5.2 and needs to be converted
into a string. Check if the returned value is an instance of bytes and
if it is decode it as a utf-8 string. If it is not a utf-8 encoded string
the decoding may fail with an exception.
Prior to this fix the comparisions check data == "" would fail when data
was b'' and would cause an infinite memory leaking loop. joins would
also fail with an exception below but due to the infinite loop it never
made it that far.
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Syntax for exception handling is a little more strict in python 3.x.
Convert all uses to a form accepted by both python 2.x & python 3.x.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Simon Glass <sjg@chromium.org>
This adds a new library on top of subprocess which permits access to
the subprocess output as it is being generated. We can therefore
give the illusion that a process is running independently, but still
monitor its output so that we know what is going on.
It is possible to display output on a terminal as it is generated
(a little like tee). The supplied output function is called with all
stdout/stderr data as it arrives.
Signed-off-by: Simon Glass <sjg@chromium.org>
