diff options
Diffstat (limited to 'Modules/binascii.c')
| -rw-r--r-- | Modules/binascii.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Modules/binascii.c b/Modules/binascii.c index e09255c..034dc01 100644 --- a/Modules/binascii.c +++ b/Modules/binascii.c @@ -56,6 +56,9 @@ #define PY_SSIZE_T_CLEAN #include "Python.h" +#ifdef USE_ZLIB_CRC32 +#include "zlib.h" +#endif static PyObject *Error; static PyObject *Incomplete; @@ -776,6 +779,20 @@ binascii_crc_hqx(PyObject *self, PyObject *args) PyDoc_STRVAR(doc_crc32, "(data, oldcrc = 0) -> newcrc. Compute CRC-32 incrementally"); +#ifdef USE_ZLIB_CRC32 +/* This was taken from zlibmodule.c PyZlib_crc32 (but is PY_SSIZE_T_CLEAN) */ +static PyObject * +binascii_crc32(PyObject *self, PyObject *args) +{ + uLong crc32val = 0; /* crc32(0L, Z_NULL, 0) */ + Byte *buf; + int len; + if (!PyArg_ParseTuple(args, "s#|I:crc32", &buf, &len, &crc32val)) + return NULL; + crc32val = crc32(crc32val, buf, len); + return PyLong_FromUnsignedLong(crc32val & 0xffffffffU); +} +#else /* USE_ZLIB_CRC32 */ /* Crc - 32 BIT ANSI X3.66 CRC checksum files Also known as: ISO 3307 **********************************************************************| @@ -914,6 +931,7 @@ binascii_crc32(PyObject *self, PyObject *args) result = (crc ^ 0xFFFFFFFF); return PyLong_FromUnsignedLong(result & 0xffffffff); } +#endif /* USE_ZLIB_CRC32 */ static PyObject * |