ref: 70a3ec1accb6de1c1c273470af0ddfa2edc1b0a9
dir: /tools/free_space.py/
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Usage: python3 free_space.py [BANK=none] [pokecrystal.map]
Calculate the free space in the ROM or its individual banks.
The BANK argument allows printing free space in one, all, or none of the ROM's banks.
Valid arguments are numbers (in decimal "42" or hexadecimal "0x2A"), "all" or "none".
If not specified, defaults to "none".
"""
import sys
from mapreader import MapReader
def main():
print_bank = 'none'
filename = 'pokecrystal.map'
for arg in sys.argv[1:]:
if arg.startswith('BANK='):
print_bank = arg.split('=', 1)[-1]
else:
filename = arg
if print_bank not in {'all', 'none'}:
try:
print_bank = (int(print_bank[2:], 16)
if print_bank.startswith(('0x', '0X'))
else int(print_bank))
except ValueError:
error = f'Error: invalid BANK: {print_bank}'
if print_bank.isalnum():
error += f' (did you mean: 0x{print_bank}?)'
print(error, file=sys.stderr)
sys.exit(1)
num_banks = 0x80
bank_size = 0x4000 # bytes
total_size = num_banks * bank_size
reader = MapReader()
with open(filename, 'r', encoding='utf-8') as file:
reader.read_map_data(file.readlines())
free_space = 0
per_bank = []
default_bank_data = {'sections': [], 'used': 0, 'slack': bank_size}
for bank in range(num_banks):
bank_data = reader.bank_data['ROM0 bank' if bank == 0 else 'ROMX bank']
data = bank_data.get(bank, default_bank_data)
used, slack = data['used'], data['slack']
per_bank.append((used, slack))
free_space += slack
free_percent = 100 * free_space / total_size
print(f'Free space: {free_space}/{total_size} ({free_percent:.2f}%)')
if print_bank != 'none':
print()
print('bank, used, free')
for bank in range(num_banks):
used, slack = per_bank[bank]
if print_bank in {'all', bank}:
print(f'${bank:02X}, {used}, {slack}')
if __name__ == '__main__':
main()