astring.strip_console_codes raises error on recent kernel messages #133
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smitterl
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Fixes: avocado-framework#133 In recent kernel boots, stripping raised error because of missing control characters. Add them: `c` is clear/reset screen `!p` - don't know `]104` - don't know Signed-off-by: Sebastian Mitterle <[email protected]>
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It looks to me the sequences are: ESC c: terminal reset I don't have details about the OS command 104. Ref. https://gist.github.com/justinmk/a5102f9a0c1810437885a04a07ef0a91 |
smitterl
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Fixes: avocado-framework#133 In recent kernel boots, stripping raised error because of missing control characters. Add them: `c` reset screen `!p` soft reset terminal `]104` - execute OS command '104' These control characters are listed in the xterm control sequence cheat sheet at https://gist.github.com/justinmk/a5102f9a0c1810437885a04a07ef0a91 Signed-off-by: Sebastian Mitterle <[email protected]>
smitterl
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Jan 15, 2025
aexpect will raise an error if the console contains certain control codes, s. avocado-framework/aexpect#133 This happens in `get_stripped_output`. By using `get_output`, this can't happen and the test passes. Signed-off-by: Sebastian Mitterle <[email protected]>
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Found a good reproducer With the attached file 'min_ouptut': from aexpect.utils import astring
f = open("output.log", "rb")
output = f.read().decode("UTF-8", 'backslashreplace')
astring.strip_console_codes(output)will result in error: Traceback (most recent call last):
File "/root/aexpect/aexpect/utils/astring.py", line 55, in strip_console_codes
special_code = re.findall(console_codes, tmp_word)[0]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/root/aexpect/aexpect/utils/astring.py", line 58, in strip_console_codes
raise ValueError(f"{tmp_word} is not included in the known "
ValueError: [!p is not included in the known console codes list %[G@8]|\[[@A-HJ-MPXa-hl-nqrsu\`]|\[[\d;]+[HJKgqnrm]|#8|\([B0UK]|\)|\[\?2004[lh] |
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Applying the strip_console_codes to the output of a recent (rescue) kernel "6.10.0-15" boot messages, a test error is raised:
The location that hits this is after the 'read-only' in
The tmp_word at this point is:
before it's recognized as unknown word.
IIUC "ESC c" is used to clear the console and in python this ESC is
\x1bdisplayed as^[. https://man7.org/linux/man-pages/man4/console_codes.4.htmlThe text was updated successfully, but these errors were encountered: