2014-12-15 00:18:12 +00:00
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try:
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import ffi
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except ImportError:
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print("SKIP")
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2017-06-10 18:14:16 +01:00
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raise SystemExit
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2014-12-15 00:18:12 +00:00
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2015-01-09 02:09:55 +00:00
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def ffi_open(names):
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err = None
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for n in names:
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try:
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mod = ffi.open(n)
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return mod
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except OSError as e:
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err = e
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raise err
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libc = ffi_open(('libc.so', 'libc.so.0', 'libc.so.6', 'libc.dylib'))
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2014-12-15 00:18:12 +00:00
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qsort = libc.func("v", "qsort", "piip")
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def cmp(pa, pb):
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a = ffi.as_bytearray(pa, 1)
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b = ffi.as_bytearray(pb, 1)
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#print("cmp:", a, b)
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return a[0] - b[0]
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cmp_c = ffi.callback("i", cmp, "pp")
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s = bytearray(b"foobar")
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print("org string:", s)
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qsort(s, len(s), 1, cmp_c)
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print("qsort'ed:", s)
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