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- try:
- import ffi
- except ImportError:
- print("SKIP")
- raise SystemExit
- def ffi_open(names):
- err = None
- for n in names:
- try:
- mod = ffi.open(n)
- return mod
- except OSError as e:
- err = e
- raise err
- libc = ffi_open(('libc.so', 'libc.so.0', 'libc.so.6', 'libc.dylib'))
- qsort = libc.func("v", "qsort", "piip")
- def cmp(pa, pb):
- a = ffi.as_bytearray(pa, 1)
- b = ffi.as_bytearray(pb, 1)
- #print("cmp:", a, b)
- return a[0] - b[0]
- cmp_c = ffi.callback("i", cmp, "pp")
- s = bytearray(b"foobar")
- print("org string:", s)
- qsort(s, len(s), 1, cmp_c)
- print("qsort'ed:", s)
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