[PATCH] lib/bb/build.py: decode the command as UTF-8

[Ross Burton <ross.burton@intel.com>]

The messaging FIFO is UTF-8, so decode the command as UTF-8 as well as the value
as otherwise "bberror" != b("bberror") and none of the messages from shell
functions are ever displayed.

Also add an else to the command parser so unhandled commands are noticed.

Signed-off-by: Ross Burton <ross.burton@intel.com>
---
 bitbake/lib/bb/build.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/bitbake/lib/bb/build.py b/bitbake/lib/bb/build.py
index 4f01d66..7c47680 100644
--- a/bitbake/lib/bb/build.py
+++ b/bitbake/lib/bb/build.py
@@ -389,7 +389,7 @@ exit $ret
         lines = data.split(b'\0')
         for line in lines:
             splitval = line.split(b' ', 1)
-            cmd = splitval[0]
+            cmd = splitval[0].decode("utf-8")
             if len(splitval) > 1:
                 value = splitval[1].decode("utf-8")
             else:
@@ -413,7 +413,8 @@ exit $ret
                 level = int(splitval[0])
                 value = splitval[1]
                 bb.debug(level, value)
-
+            else:
+                bb.warn("Unrecognised command '%s' on FIFO" % cmd)
     tempdir = d.getVar('T', True)
     fifopath = os.path.join(tempdir, 'fifo.%s' % os.getpid())
     if os.path.exists(fifopath):
-- 
2.8.1