43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
import zipfile, os, shutil
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base = r'e:\MCStudioDownload\work\3027246179@qq.com\Cpp\AddOn\309c2d420bc84ee986db9cdd070ff02a\_sa_hanhua_out'
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jar = base + r'\sa_essentials-forge-1.20.1-1.0.0.jar'
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target = 'com/ogaba/sa_combat/client/event/SACombatClientForgeEvents.class'
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old_ascii = b'Reloading...' # 11 字节
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old_pat = b'\x01\x00\x0b' + old_ascii # CONSTANT_Utf8 tag + u2 length(11) + bytes
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new_utf8 = '换弹中...'.encode('utf-8') # 12 字节 (E6 8D A2 E5 BC B9 E4 B8 AD 2E 2E 2E)
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new_pat = b'\x01\x00\x0c' + new_utf8
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print('new bytes:', new_utf8.hex())
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with zipfile.ZipFile(jar) as z:
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infos = z.infolist()
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data = {i.filename: z.read(i) for i in infos}
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b = data[target]
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cnt = b.count(old_pat)
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print('occurrences of utf8-const pattern:', cnt)
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if cnt != 1:
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raise SystemExit('ABORT: expected exactly 1 occurrence')
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nb = b.replace(old_pat, new_pat)
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print('class size: %d -> %d' % (len(b), len(nb)))
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# 验证替换后不再含旧 ASCII（单独出现可能在其他字段；此处仅验证常量池模式消失）
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print('old const gone:', nb.count(old_pat) == 0)
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data[target] = nb
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tmp = jar + '.tmp'
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with zipfile.ZipFile(tmp, 'w', zipfile.ZIP_DEFLATED) as z:
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for i in infos:
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z.writestr(i, data[i.filename])
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shutil.move(tmp, jar)
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print('jar updated.')
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# verify
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with zipfile.ZipFile(jar) as z:
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nb = z.read(target)
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print('new const present:', nb.count(new_pat) == 1)
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print('old ascii anywhere in class:', nb.count(old_ascii))
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print('entries=', len(z.namelist()), 'testzip=', z.testzip())
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