mirror of
https://github.com/MikaylaFischler/cc-mek-scada.git
synced 2024-08-30 18:22:34 +00:00
81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
import os
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import re
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# minify files in a directory
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def min_files(path):
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start_sum, end_sum = 0, 0
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for (root, _, files) in os.walk(path):
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os.makedirs('_minified/' + root, exist_ok=True)
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for f in files:
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start, end = minify(root + "/" + f)
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start_sum = start_sum + start
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end_sum = end_sum + end
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delta = start_sum - end_sum
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print(f"> done with '{path}': shrunk from {start_sum} bytes to {end_sum} bytes (saved {delta} bytes, or {(100*delta/start_sum):.2f}%)")
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return list
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# minify a file
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def minify(path: str):
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size_start = os.stat(path).st_size
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f = open(path, "r")
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contents = f.read()
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f.close()
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if re.search(r'--+\[+', contents) != None:
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# absolutely not dealing with lua multiline comments
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# - there are more important things to do
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# - this minification is intended to be 100% safe, so working with multiline comments is asking for trouble
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# - the project doesn't use them as of writing this (except in test/), and it might as well stay that way
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raise Exception(f"no multiline comments allowed! (offending file: {path})")
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if re.search(r'\\$', contents, flags=re.MULTILINE) != None:
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# '\' allows for multiline strings, which would require reverting to processing syntax line by line to support them
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raise Exception(f"no escaping newlines! (offending file: {path})")
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# drop the comments, unless the line has quotes, because quotes are scary
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# (quotes are scary since we could actually be inside a string: "-- ..." shouldn't get deleted)
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# -> whitespace before '--' and anything after that, which includes '---' comments
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minified = re.sub(r'\s*--+(?!.*[\'"]).*', '', contents)
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# drop leading whitespace on each line
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minified = re.sub(r'^ +', '', minified, flags=re.MULTILINE)
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# drop blank lines
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while minified != re.sub(r'\n\n', '\n', minified):
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minified = re.sub(r'\n\n', '\n', minified)
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# write the minified file
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f_min = open(f"_minified/{path}", "w")
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f_min.write(minified)
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f_min.close()
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size_end = os.stat(f"_minified/{path}").st_size
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print(f">> shrunk '{path}' from {size_start} bytes to {size_end} bytes (saved {size_start-size_end} bytes)")
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return size_start, size_end
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# minify applications and libraries
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dirs = [ 'scada-common', 'graphics', 'lockbox', 'reactor-plc', 'rtu', 'supervisor', 'coordinator', 'pocket' ]
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for _, d in enumerate(dirs):
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min_files(d)
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# minify root files
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minify("startup.lua")
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minify("initenv.lua")
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minify("configure.lua")
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# copy in license for build usage
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lic1 = open("LICENSE", "r")
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lic2 = open("_minified/LICENSE", "w")
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lic2.write(lic1.read())
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lic1.close()
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lic2.close()
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