mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-12-26 19:36:03 +00:00
automation is here
automatically minifies scripts before embedding them gotta save them bytes
This commit is contained in:
bleck9999
parent
d4f95da062
commit
e9fb276e46
2 changed files with 186 additions and 2 deletions
7
Makefile
7
Makefile
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@ -111,8 +111,11 @@ $(BUILDDIR)/$(TARGET)/script/builtin.o: $(BUILDDIR)/$(TARGET)/script/builtin.c
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$(BUILDDIR)/$(TARGET)/script/builtin.c: scripts/*.te
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@mkdir -p "$(@D)"
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@mkdir -p "$(BUILDDIR)/$(TARGET)/scripts"
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ifeq ($(OS),Windows_NT)
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@py te2c.py "$(BUILDDIR)/$(TARGET)/script/builtin" scripts
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@py ts-minifier.py --no-replace-functions -d "$(BUILDDIR)/$(TARGET)/scripts" $(wildcard scripts/*.te)
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@py te2c.py "$(BUILDDIR)/$(TARGET)/script/builtin" "$(BUILDDIR)/$(TARGET)/scripts"
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else
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@python3 te2c.py "$(BUILDDIR)/$(TARGET)/script/builtin" scripts
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@python3 ts-minifier.py --no-replace-functions -d "$(BUILDDIR)/$(TARGET)/scripts" $(wildcard scripts/*.te)
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@python3 te2c.py "$(BUILDDIR)/$(TARGET)/script/builtin" "$(BUILDDIR)/$(TARGET)/scripts"
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endif
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181
ts-minifier.py
Normal file
181
ts-minifier.py
Normal file
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@ -0,0 +1,181 @@
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# Copyright (c) 2021 bleck9999
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# https://github.com/bleck9999/ts-minifier
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# Version: 92743efc
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import argparse
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import re
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# if is not included because it's already 2 characters
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sub_funcs = {'while': "_h", 'print': "_p", 'println': "_l", 'mountsys': "_s", 'mountemu': "_e", 'readsave': "_r",
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'exit': "_q", 'break': "_b", 'dict': "_d", 'setpixel': "_y", 'readdir': "_i", 'copyfile': "_c",
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'mkdir': "_k", 'memory': "_m", 'ncatype': "_n", 'pause': "_w", 'color': "_a", 'menu': "__", 'emu': "_u",
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'clear': "_x", 'timer': "_t", 'deldir': "_g", 'fsexists': "_f", 'delfile': "_z", "copydir": "c_",
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"movefile": "_v", "payload": "_j", "readfile": "_o", "writefile": "w_"}
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replace_functions = True
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def wantsumspace(s: str):
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for c in s.lower():
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if (ord(c) < 97 or ord(c) > 122) and (ord(c) != 95) and not (c.isnumeric()):
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return False
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return True
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def commentstartswhere(s: str):
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quoted = False
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for c in range(len(s)):
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if s[c] == '"':
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quoted = not quoted
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if s[c] == '#' and not quoted:
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return c
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return None
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def minify(script: str):
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# currently ts does not seem to allow 's to mark a quote
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# (https://github.com/suchmememanyskill/TegraExplorer/blob/tsv3/source/script/parser.c#L173)
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# im fine with that, it makes doing this a lot easier
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# strings = script.split(sep='"')
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str_reuse = {}
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requires = ""
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mcode = ""
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stl_counts = {}.fromkeys(sub_funcs, 0)
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# while part < len(strings):
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for line in script.split(sep='\n'):
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# maybe in future it'll shrink user defined names
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# dont hold out hope for that because `a.files.foreach("b") {println(b)}` is valid syntax
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# and i dont have the skill or patience to deal with that
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# # in theory all the even numbered indexes should be outside quotes, so we ignore any parts with an odd index
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# if part % 2 == 1:
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# if strings[part] not in str_reuse:
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# str_reuse[strings[part]] = 0
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# else:
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# str_reuse[strings[part]] += 1
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# mcode += f'"{strings[part]}"'
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start = commentstartswhere(line)
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if start is None:
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start = -1
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if "REQUIRE " in line[start:]:
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requires += line[start:] + '\n' # leave REQUIREs unmodified
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# comments are terminated by a newline so we need to add one back in
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# *deep breath*
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# slicing is exclusive on the right side of the colon so the "no comment" value of start=-1 would cut off
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# the last character of the line which would lead to several issues
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# however this is desirable when there *is* a comment, since it being exclusive means there isn't a trailing #
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# and if you're wondering about the above check that uses line[start:] this doesn't matter,
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# one character cant contain an 8 character substring
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if start != -1:
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line = line[:start]
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line = line.split(sep='"')
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if len(line) % 2 == 0:
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print("You appear to have string literals spanning multiple lines. Please seek professional help")
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raise Exception("Too much hatred")
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part = 0
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while part < len(line):
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# all the odd numbered indexes should be inside quotes
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if part % 2 == 0:
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if not line[part]:
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break
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for s in sub_funcs:
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stl_counts[s] += len(re.findall("(?<!\\.)%s\\(" % s, line[part]))
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mcode += line[part].replace('\t', '') + ' '
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else:
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if line[part] not in str_reuse:
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str_reuse[line[part]] = 0
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else:
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str_reuse[line[part]] += 1
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mcode += f'"{line[part]}"'
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part += 1
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# tsv3 is still an absolute nightmare
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# so spaces have a couple edge cases
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# 1. the - operator which requires space between the right operand
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# yeah that's right only the right one
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# thanks meme
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# 2. between 2 letters
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inquote = False
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mmcode = ""
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index = 0
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newline = list(mcode)
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while index < (len(mcode) - 3):
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sec = mcode[index:index + 3]
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if not inquote and sec[1] == '"':
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inquote = True
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elif inquote and sec[1] == '"':
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inquote = False
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if (sec[1] == ' ') and not inquote:
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if wantsumspace(sec[0]) and wantsumspace(sec[2]):
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pass
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elif sec[0] == '-' and sec[2].isnumeric():
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pass
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else:
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newline[index + 1] = ''
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index += 1
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mmcode += ''.join(newline).strip()
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for func in sub_funcs:
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# space saved here is given by n * (len(func) - len(min_func)) - (len(min_func)+1 + len(func))
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# as such with one usage space is always lost (len(func)-2 is never > len(func)+3) so dont even try
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if stl_counts[func] >= 2:
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savings = stl_counts[func] * (len(func) - 2) - (len(func) + 3)
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print(f"Replacing all {stl_counts[func]} usages of {func} would save {savings}byte{'s' if savings != 1 else ''}")
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if (savings < 0) or not replace_functions:
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print("Savings negative or automatic replacement disabled, continuing")
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continue
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func_min = sub_funcs[func] # now here we have to assume nobody is using any of our substitute vars
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# should be a pretty safe assumption but knowing for sure would require about the same amount of effort
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# as it would to replace all user defined variables
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ucode = "" # this is rather hacky
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sections = [0]
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for m in re.finditer(r"(?<!\.)%s\(" % func, mmcode):
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sections.append(m.span()[0])
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sections.append(m.span()[1])
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sections.append(len(mmcode))
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i = 2 # change rather to very
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while i < len(sections):
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ucode += mmcode[sections[i-2]:sections[i-1]] + func_min + '('
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i += 2
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ucode += mmcode[sections[i-2]:]
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ucode = f"{func_min}={func}\n" + ucode
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mmcode = ucode
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# a space isn't any shorter than \n so why not use \n
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for string, count in str_reuse.items():
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if count >= 2:
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# we can't auto replace strings without a full parser
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# unlike with the stdlib functions we cant make a lookup table ahead of time
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# and generating shorter names on the fly sounds like an absolute nightmare no thanks
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print(f'Warning: string "{string}" of len {len(string)} reused {count} times')
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return requires + mmcode.strip()
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description="Minify tsv3 scripts, useful for embedding",
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formatter_class=argparse.RawTextHelpFormatter)
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parser.add_argument("source", type=str, nargs='+', help="source files to minify")
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parser.add_argument("-d", type=str, nargs='?', help="destination folder for minified scripts"
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"\ndefault: ./", default='./')
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parser.add_argument("--replace-functions", action=argparse.BooleanOptionalAction,
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help="if false, warn if functions are reused instead of replacing them\ndefault: true")
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args = parser.parse_args()
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files = args.source
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dest = args.d[:-1] if args.d[-1] == '/' else args.d
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replace_functions = args.replace_functions if args.replace_functions is not None else True
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for file in files:
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print(f"Minifying {file}")
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with open(file, 'r') as f:
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r = minify(f.read())
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file = file.split(sep='.')[0].split(sep='/')[-1]
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f = open(f"{dest}/{file}_min.te", 'w')
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f.write(r)
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