Migrate Bootstrap 4 to 5 via RegEx

regex-migrate-bs-4-to-5.py

# table for regex replacements
tabRegEx=[
    [r"ml(-\d)", r"ms\1"],
    [r"mr(-\d)", r"me\1"],
    [r"pl(-\d)", r"ps\1"],
    [r"pr(-\d)", r"pr\1"],
    [r"data-toggle=([\"'](?:collapse|dropdown|tab)[\"'])", r"data-bs-toggle=\1"],
    [r"data-target=", r"data-bs-target="],
    ["float-left",  "float-start"],
    ["float-right", "float-end"],
    ["text-left",  "text-start"],
    ["text-right", "text-end"],
    ["border-left",  "border-start"],
    ["border-right", "border-end"],
    ["text-monospace", "font-monospace"],
    ["no-gutters", "g-0"],
]


def replaceText(text):
    for regex in tabRegEx:
        #match = re.search(r"(?<=\W)"+regex[0]+r"(?=\W)", text)
        #if match: print(regex[0], match[0])
        text = re.sub(r"(?<=\W)"+regex[0]+r"(?=\W)", regex[1], text)   
    return text


def processFile(filename):

    with open(filename, 'r') as file:
        text = file.read()
        text = replaceText(text)
        if text=="": return # abbort on error

    with open(filename, 'w') as file:
        file.write(text)



import sys
import re


# read all files and replace
for filename in sys.argv[1:]:
    processFile(filename)