[PATCH v2 4/9] oeqa/utils/qemurunner: support ignoring vt100 escape sequences

[Enrico Jorns <ejo@pengutronix.de>]

If we talk to terminals that like colors, we need to ignore the vt100
escape sequences when matching strings.

Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
---
 meta/lib/oeqa/utils/qemurunner.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/lib/oeqa/utils/qemurunner.py b/meta/lib/oeqa/utils/qemurunner.py
index 05385763ac..95c9e6596c 100644
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -30,6 +30,7 @@ control_range = list(range(0,32))+list(range(127,160))
 control_chars = [chr(x) for x in control_range
                 if chr(x) not in string.printable]
 re_control_char = re.compile('[%s]' % re.escape("".join(control_chars)))
+re_vt100 = re.compile(r'(\x1b\[|\x9b)[^@-_a-z]*[@-_a-z]|\x1b[@-_a-z]')
 
 class QemuRunner:
 
@@ -662,7 +663,7 @@ class QemuRunner:
                 time.sleep(0.1)
                 answer = self.server_socket.recv(1024)
                 if answer:
-                    data += answer.decode('utf-8')
+                    data += re_vt100.sub("", answer.decode('utf-8'))
                     # Search the prompt to stop
                     if re.search(self.boot_patterns['search_cmd_finished'], data):
                         break
-- 
2.39.2