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I'm writing a Python program that logs terminal interaction (similar to the script program), and I'd like to filter out the VT100 escape sequences before writing to disk. I'd like to use a function like this:
def strip_escapes(buf):
escape_regex = re.compile(???) # <--- this is what I'm looking for
return escape_regex.sub('', buf)
What should go in escape_regex?
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Python also uses backslash ( \ ) for escape sequences (i.e., you need to write \\ for \ , \\d for \d ), but it supports raw string in the form of r'...' , which ignore the interpretation of escape sequences - great for writing regex.
You can use regexes to remove the ANSI escape sequences from a string in Python. Simply substitute the escape sequences with an empty string using re. sub(). The regex you can use for removing ANSI escape sequences is: '(\x9B|\x1B\[)[0-?]
The RegExp \D Metacharacter in JavaScript is used to search non digit characters i.e all the characters except digits. It is same as [^0-9]. Syntax: /\D/
A RegEx, or Regular Expression, is a sequence of characters that forms a search pattern. RegEx can be used to check if a string contains the specified search pattern.
The combined expression for escape sequences can be something generic like this:
(\x1b\[|\x9b)[^@-_]*[@-_]|\x1b[@-_]
Should be used with re.I
This incorporates:
\x1b followed by a character in the range of @ until _.\x9b as opposed to \x1b + "[".However, this will not work for sequences that define key mappings or otherwise included strings wrapped in quotes.
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