34 lines
644 B
Python
34 lines
644 B
Python
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)
|