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ap: ensure only one occurence

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This commit is contained in:
Vladislav Yarmak 2019-10-22 19:00:25 +03:00
parent 0ea7227035
commit 8eb2b50a9a
1 changed files with 6 additions and 1 deletions
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7
win/tools/autopatch/autopatch.py
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@ -59,6 +59,9 @@ class ExtractException(Exception):
class PatternNotFoundException(Exception):
pass
class MultipleOccurencesException(Exception):
pass
class UnknownPlatformException(Exception):
pass
@ -130,9 +133,11 @@ def make_patch(archive, *,
sevenzip=sevenzip) as tgt:
f = expand(tgt, sevenzip=sevenzip)
offset = f.find(search)
del f
if offset == -1:
raise PatternNotFoundException("Pattern not found.")
if f[offset+len(search):].find(search) != -1:
raise MultipleOccurencesException("Multiple occurences of pattern found!")
del f
print("Pattern found @ %016X" % (offset,), file=sys.stderr)
res = []