Recorded merge of revisions 81032 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

................
  r81032 | antoine.pitrou | 2010-05-09 17:52:27 +0200 (dim., 09 mai 2010) | 9 lines

  Recorded merge of revisions 81029 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines

    Untabify C files. Will watch buildbots.
  ........
................

1 files changed, 1252 insertions, 1252 deletions

diff --git a/Modules/_struct.c b/Modules/_struct.c
index 6a89d8c..3f01c25 100644
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -14,30 +14,30 @@ static PyTypeObject PyStructType;
 
 /* The translation function for each format character is table driven */
 typedef struct _formatdef {
-	char format;
-	Py_ssize_t size;
-	Py_ssize_t alignment;
-	PyObject* (*unpack)(const char *,
-			    const struct _formatdef *);
-	int (*pack)(char *, PyObject *,
-		    const struct _formatdef *);
+    char format;
+    Py_ssize_t size;
+    Py_ssize_t alignment;
+    PyObject* (*unpack)(const char *,
+                        const struct _formatdef *);
+    int (*pack)(char *, PyObject *,
+                const struct _formatdef *);
 } formatdef;
 
 typedef struct _formatcode {
-	const struct _formatdef *fmtdef;
-	Py_ssize_t offset;
-	Py_ssize_t size;
+    const struct _formatdef *fmtdef;
+    Py_ssize_t offset;
+    Py_ssize_t size;
 } formatcode;
 
 /* Struct object interface */
 
 typedef struct {
-	PyObject_HEAD
-	Py_ssize_t s_size;
-	Py_ssize_t s_len;
-	formatcode *s_codes;
-	PyObject *s_format;
-	PyObject *weakreflist; /* List of weak references */
+    PyObject_HEAD
+    Py_ssize_t s_size;
+    Py_ssize_t s_len;
+    formatcode *s_codes;
+    PyObject *s_format;
+    PyObject *weakreflist; /* List of weak references */
 } PyStructObject;
 
 
@@ -94,15 +94,15 @@ typedef struct { char c; _Bool x; } s_bool;
 static PyObject *
 get_pylong(PyObject *v)
 {
-	assert(v != NULL);
-	if (!PyLong_Check(v)) {
-		PyErr_SetString(StructError,
-				"required argument is not an integer");
-		return NULL;
-	}
+    assert(v != NULL);
+    if (!PyLong_Check(v)) {
+        PyErr_SetString(StructError,
+                        "required argument is not an integer");
+        return NULL;
+    }
 
-	Py_INCREF(v);
-	return v;
+    Py_INCREF(v);
+    return v;
 }
 
 /* Helper routine to get a C long and raise the appropriate error if it isn't
@@ -111,22 +111,22 @@ get_pylong(PyObject *v)
 static int
 get_long(PyObject *v, long *p)
 {
-	long x;
+    long x;
 
-	if (!PyLong_Check(v)) {
-		PyErr_SetString(StructError,
-				"required argument is not an integer");
-		return -1;
-	}
-	x = PyLong_AsLong(v);
-	if (x == -1 && PyErr_Occurred()) {
-		if (PyErr_ExceptionMatches(PyExc_OverflowError))
-			PyErr_SetString(StructError,
-					"argument out of range");
-		return -1;
-	}
-	*p = x;
-	return 0;
+    if (!PyLong_Check(v)) {
+        PyErr_SetString(StructError,
+                        "required argument is not an integer");
+        return -1;
+    }
+    x = PyLong_AsLong(v);
+    if (x == -1 && PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_OverflowError))
+            PyErr_SetString(StructError,
+                            "argument out of range");
+        return -1;
+    }
+    *p = x;
+    return 0;
 }
 
 
@@ -136,22 +136,22 @@ get_long(PyObject *v, long *p)
 static int
 get_ulong(PyObject *v, unsigned long *p)
 {
-	unsigned long x;
-
-	if (!PyLong_Check(v)) {
-		PyErr_SetString(StructError,
-				"required argument is not an integer");
-		return -1;
-	}
-	x = PyLong_AsUnsignedLong(v);
-	if (x == (unsigned long)-1 && PyErr_Occurred()) {
-		if (PyErr_ExceptionMatches(PyExc_OverflowError))
-			PyErr_SetString(StructError,
-					"argument out of range");
-		return -1;
-	}
-	*p = x;
-	return 0;
+    unsigned long x;
+
+    if (!PyLong_Check(v)) {
+        PyErr_SetString(StructError,
+                        "required argument is not an integer");
+        return -1;
+    }
+    x = PyLong_AsUnsignedLong(v);
+    if (x == (unsigned long)-1 && PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_OverflowError))
+            PyErr_SetString(StructError,
+                            "argument out of range");
+        return -1;
+    }
+    *p = x;
+    return 0;
 }
 #endif  /* PY_STRUCT_OVERFLOW_MASKING */
 
@@ -162,21 +162,21 @@ get_ulong(PyObject *v, unsigned long *p)
 static int
 get_longlong(PyObject *v, PY_LONG_LONG *p)
 {
-	PY_LONG_LONG x;
-	if (!PyLong_Check(v)) {
-		PyErr_SetString(StructError,
-				"required argument is not an integer");
-		return -1;
-	}
-	x = PyLong_AsLongLong(v);
-	if (x == -1 && PyErr_Occurred()) {
-		if (PyErr_ExceptionMatches(PyExc_OverflowError))
-			PyErr_SetString(StructError,
-					"argument out of range");
-		return -1;
-	}
-	*p = x;
-	return 0;
+    PY_LONG_LONG x;
+    if (!PyLong_Check(v)) {
+        PyErr_SetString(StructError,
+                        "required argument is not an integer");
+        return -1;
+    }
+    x = PyLong_AsLongLong(v);
+    if (x == -1 && PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_OverflowError))
+            PyErr_SetString(StructError,
+                            "argument out of range");
+        return -1;
+    }
+    *p = x;
+    return 0;
 }
 
 /* Same, but handling native unsigned long long. */
@@ -184,21 +184,21 @@ get_longlong(PyObject *v, PY_LONG_LONG *p)
 static int
 get_ulonglong(PyObject *v, unsigned PY_LONG_LONG *p)
 {
-	unsigned PY_LONG_LONG x;
-	if (!PyLong_Check(v)) {
-		PyErr_SetString(StructError,
-				"required argument is not an integer");
-		return -1;
-	}
-	x = PyLong_AsUnsignedLongLong(v);
-	if (x == -1 && PyErr_Occurred()) {
-		if (PyErr_ExceptionMatches(PyExc_OverflowError))
-			PyErr_SetString(StructError,
-					"argument out of range");
-		return -1;
-	}
-	*p = x;
-	return 0;
+    unsigned PY_LONG_LONG x;
+    if (!PyLong_Check(v)) {
+        PyErr_SetString(StructError,
+                        "required argument is not an integer");
+        return -1;
+    }
+    x = PyLong_AsUnsignedLongLong(v);
+    if (x == -1 && PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_OverflowError))
+            PyErr_SetString(StructError,
+                            "argument out of range");
+        return -1;
+    }
+    *p = x;
+    return 0;
 }
 
 #endif
@@ -211,57 +211,57 @@ get_ulonglong(PyObject *v, unsigned PY_LONG_LONG *p)
 
 static PyObject *
 unpack_float(const char *p,  /* start of 4-byte string */
-             int le)	     /* true for little-endian, false for big-endian */
+         int le)             /* true for little-endian, false for big-endian */
 {
-	double x;
+    double x;
 
-	x = _PyFloat_Unpack4((unsigned char *)p, le);
-	if (x == -1.0 && PyErr_Occurred())
-		return NULL;
-	return PyFloat_FromDouble(x);
+    x = _PyFloat_Unpack4((unsigned char *)p, le);
+    if (x == -1.0 && PyErr_Occurred())
+        return NULL;
+    return PyFloat_FromDouble(x);
 }
 
 static PyObject *
 unpack_double(const char *p,  /* start of 8-byte string */
-              int le)         /* true for little-endian, false for big-endian */
+          int le)         /* true for little-endian, false for big-endian */
 {
-	double x;
+    double x;
 
-	x = _PyFloat_Unpack8((unsigned char *)p, le);
-	if (x == -1.0 && PyErr_Occurred())
-		return NULL;
-	return PyFloat_FromDouble(x);
+    x = _PyFloat_Unpack8((unsigned char *)p, le);
+    if (x == -1.0 && PyErr_Occurred())
+        return NULL;
+    return PyFloat_FromDouble(x);
 }
 
 /* Helper to format the range error exceptions */
 static int
 _range_error(const formatdef *f, int is_unsigned)
 {
-	/* ulargest is the largest unsigned value with f->size bytes.
-	 * Note that the simpler:
-	 *     ((size_t)1 << (f->size * 8)) - 1
-	 * doesn't work when f->size == sizeof(size_t) because C doesn't
-	 * define what happens when a left shift count is >= the number of
-	 * bits in the integer being shifted; e.g., on some boxes it doesn't
-	 * shift at all when they're equal.
-	 */
-	const size_t ulargest = (size_t)-1 >> ((SIZEOF_SIZE_T - f->size)*8);
-	assert(f->size >= 1 && f->size <= SIZEOF_SIZE_T);
-	if (is_unsigned)
-		PyErr_Format(StructError,
-			"'%c' format requires 0 <= number <= %zu",
-			f->format,
-			ulargest);
-	else {
-		const Py_ssize_t largest = (Py_ssize_t)(ulargest >> 1);
-		PyErr_Format(StructError,
-			"'%c' format requires %zd <= number <= %zd",
-			f->format,
-			~ largest,
-			largest);
-	}
-
-	return -1;
+    /* ulargest is the largest unsigned value with f->size bytes.
+     * Note that the simpler:
+     *     ((size_t)1 << (f->size * 8)) - 1
+     * doesn't work when f->size == sizeof(size_t) because C doesn't
+     * define what happens when a left shift count is >= the number of
+     * bits in the integer being shifted; e.g., on some boxes it doesn't
+     * shift at all when they're equal.
+     */
+    const size_t ulargest = (size_t)-1 >> ((SIZEOF_SIZE_T - f->size)*8);
+    assert(f->size >= 1 && f->size <= SIZEOF_SIZE_T);
+    if (is_unsigned)
+        PyErr_Format(StructError,
+            "'%c' format requires 0 <= number <= %zu",
+            f->format,
+            ulargest);
+    else {
+        const Py_ssize_t largest = (Py_ssize_t)(ulargest >> 1);
+        PyErr_Format(StructError,
+            "'%c' format requires %zd <= number <= %zd",
+            f->format,
+            ~ largest,
+            largest);
+    }
+
+    return -1;
 }
 
 
@@ -288,75 +288,75 @@ _range_error(const formatdef *f, int is_unsigned)
 static PyObject *
 nu_char(const char *p, const formatdef *f)
 {
-	return PyBytes_FromStringAndSize(p, 1);
+    return PyBytes_FromStringAndSize(p, 1);
 }
 
 static PyObject *
 nu_byte(const char *p, const formatdef *f)
 {
-	return PyLong_FromLong((long) *(signed char *)p);
+    return PyLong_FromLong((long) *(signed char *)p);
 }
 
 static PyObject *
 nu_ubyte(const char *p, const formatdef *f)
 {
-	return PyLong_FromLong((long) *(unsigned char *)p);
+    return PyLong_FromLong((long) *(unsigned char *)p);
 }
 
 static PyObject *
 nu_short(const char *p, const formatdef *f)
 {
-	short x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyLong_FromLong((long)x);
+    short x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyLong_FromLong((long)x);
 }
 
 static PyObject *
 nu_ushort(const char *p, const formatdef *f)
 {
-	unsigned short x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyLong_FromLong((long)x);
+    unsigned short x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyLong_FromLong((long)x);
 }
 
 static PyObject *
 nu_int(const char *p, const formatdef *f)
 {
-	int x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyLong_FromLong((long)x);
+    int x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyLong_FromLong((long)x);
 }
 
 static PyObject *
 nu_uint(const char *p, const formatdef *f)
 {
-	unsigned int x;
-	memcpy((char *)&x, p, sizeof x);
+    unsigned int x;
+    memcpy((char *)&x, p, sizeof x);
 #if (SIZEOF_LONG > SIZEOF_INT)
-	return PyLong_FromLong((long)x);
+    return PyLong_FromLong((long)x);
 #else
-	if (x <= ((unsigned int)LONG_MAX))
-		return PyLong_FromLong((long)x);
-	return PyLong_FromUnsignedLong((unsigned long)x);
+    if (x <= ((unsigned int)LONG_MAX))
+        return PyLong_FromLong((long)x);
+    return PyLong_FromUnsignedLong((unsigned long)x);
 #endif
 }
 
 static PyObject *
 nu_long(const char *p, const formatdef *f)
 {
-	long x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyLong_FromLong(x);
+    long x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyLong_FromLong(x);
 }
 
 static PyObject *
 nu_ulong(const char *p, const formatdef *f)
 {
-	unsigned long x;
-	memcpy((char *)&x, p, sizeof x);
-	if (x <= LONG_MAX)
-		return PyLong_FromLong((long)x);
-	return PyLong_FromUnsignedLong(x);
+    unsigned long x;
+    memcpy((char *)&x, p, sizeof x);
+    if (x <= LONG_MAX)
+        return PyLong_FromLong((long)x);
+    return PyLong_FromUnsignedLong(x);
 }
 
 /* Native mode doesn't support q or Q unless the platform C supports
@@ -367,21 +367,21 @@ nu_ulong(const char *p, const formatdef *f)
 static PyObject *
 nu_longlong(const char *p, const formatdef *f)
 {
-	PY_LONG_LONG x;
-	memcpy((char *)&x, p, sizeof x);
-	if (x >= LONG_MIN && x <= LONG_MAX)
-		return PyLong_FromLong(Py_SAFE_DOWNCAST(x, PY_LONG_LONG, long));
-	return PyLong_FromLongLong(x);
+    PY_LONG_LONG x;
+    memcpy((char *)&x, p, sizeof x);
+    if (x >= LONG_MIN && x <= LONG_MAX)
+        return PyLong_FromLong(Py_SAFE_DOWNCAST(x, PY_LONG_LONG, long));
+    return PyLong_FromLongLong(x);
 }
 
 static PyObject *
 nu_ulonglong(const char *p, const formatdef *f)
 {
-	unsigned PY_LONG_LONG x;
-	memcpy((char *)&x, p, sizeof x);
-	if (x <= LONG_MAX)
-		return PyLong_FromLong(Py_SAFE_DOWNCAST(x, unsigned PY_LONG_LONG, long));
-	return PyLong_FromUnsignedLongLong(x);
+    unsigned PY_LONG_LONG x;
+    memcpy((char *)&x, p, sizeof x);
+    if (x <= LONG_MAX)
+        return PyLong_FromLong(Py_SAFE_DOWNCAST(x, unsigned PY_LONG_LONG, long));
+    return PyLong_FromUnsignedLongLong(x);
 }
 
 #endif
@@ -389,168 +389,168 @@ nu_ulonglong(const char *p, const formatdef *f)
 static PyObject *
 nu_bool(const char *p, const formatdef *f)
 {
-	BOOL_TYPE x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyBool_FromLong(x != 0);
+    BOOL_TYPE x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyBool_FromLong(x != 0);
 }
 
 
 static PyObject *
 nu_float(const char *p, const formatdef *f)
 {
-	float x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyFloat_FromDouble((double)x);
+    float x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyFloat_FromDouble((double)x);
 }
 
 static PyObject *
 nu_double(const char *p, const formatdef *f)
 {
-	double x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyFloat_FromDouble(x);
+    double x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyFloat_FromDouble(x);
 }
 
 static PyObject *
 nu_void_p(const char *p, const formatdef *f)
 {
-	void *x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyLong_FromVoidPtr(x);
+    void *x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyLong_FromVoidPtr(x);
 }
 
 static int
 np_byte(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	if (get_long(v, &x) < 0)
-		return -1;
-	if (x < -128 || x > 127){
-		PyErr_SetString(StructError,
-				"byte format requires -128 <= number <= 127");
-		return -1;
-	}
-	*p = (char)x;
-	return 0;
+    long x;
+    if (get_long(v, &x) < 0)
+        return -1;
+    if (x < -128 || x > 127){
+        PyErr_SetString(StructError,
+                        "byte format requires -128 <= number <= 127");
+        return -1;
+    }
+    *p = (char)x;
+    return 0;
 }
 
 static int
 np_ubyte(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	if (get_long(v, &x) < 0)
-		return -1;
-	if (x < 0 || x > 255){
-		PyErr_SetString(StructError,
-				"ubyte format requires 0 <= number <= 255");
-		return -1;
-	}
-	*p = (char)x;
-	return 0;
+    long x;
+    if (get_long(v, &x) < 0)
+        return -1;
+    if (x < 0 || x > 255){
+        PyErr_SetString(StructError,
+                        "ubyte format requires 0 <= number <= 255");
+        return -1;
+    }
+    *p = (char)x;
+    return 0;
 }
 
 static int
 np_char(char *p, PyObject *v, const formatdef *f)
 {
-	if (PyUnicode_Check(v)) {
-		v = _PyUnicode_AsDefaultEncodedString(v, NULL);
-		if (v == NULL)
-			return -1;
-	}
-	if (!PyBytes_Check(v) || PyBytes_Size(v) != 1) {
-		PyErr_SetString(StructError,
-				"char format requires bytes or string of length 1");
-		return -1;
-	}
-	*p = *PyBytes_AsString(v);
-	return 0;
+    if (PyUnicode_Check(v)) {
+        v = _PyUnicode_AsDefaultEncodedString(v, NULL);
+        if (v == NULL)
+            return -1;
+    }
+    if (!PyBytes_Check(v) || PyBytes_Size(v) != 1) {
+        PyErr_SetString(StructError,
+                        "char format requires bytes or string of length 1");
+        return -1;
+    }
+    *p = *PyBytes_AsString(v);
+    return 0;
 }
 
 static int
 np_short(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	short y;
-	if (get_long(v, &x) < 0)
-		return -1;
-	if (x < SHRT_MIN || x > SHRT_MAX){
-		PyErr_SetString(StructError,
-				"short format requires " STRINGIFY(SHRT_MIN)
-				" <= number <= " STRINGIFY(SHRT_MAX));
-		return -1;
-	}
-	y = (short)x;
-	memcpy(p, (char *)&y, sizeof y);
-	return 0;
+    long x;
+    short y;
+    if (get_long(v, &x) < 0)
+        return -1;
+    if (x < SHRT_MIN || x > SHRT_MAX){
+        PyErr_SetString(StructError,
+                        "short format requires " STRINGIFY(SHRT_MIN)
+                        " <= number <= " STRINGIFY(SHRT_MAX));
+        return -1;
+    }
+    y = (short)x;
+    memcpy(p, (char *)&y, sizeof y);
+    return 0;
 }
 
 static int
 np_ushort(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	unsigned short y;
-	if (get_long(v, &x) < 0)
-		return -1;
-	if (x < 0 || x > USHRT_MAX){
-		PyErr_SetString(StructError,
-				"ushort format requires 0 <= number <= " STRINGIFY(USHRT_MAX));
-		return -1;
-	}
-	y = (unsigned short)x;
-	memcpy(p, (char *)&y, sizeof y);
-	return 0;
+    long x;
+    unsigned short y;
+    if (get_long(v, &x) < 0)
+        return -1;
+    if (x < 0 || x > USHRT_MAX){
+        PyErr_SetString(StructError,
+                        "ushort format requires 0 <= number <= " STRINGIFY(USHRT_MAX));
+        return -1;
+    }
+    y = (unsigned short)x;
+    memcpy(p, (char *)&y, sizeof y);
+    return 0;
 }
 
 static int
 np_int(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	int y;
-	if (get_long(v, &x) < 0)
-		return -1;
+    long x;
+    int y;
+    if (get_long(v, &x) < 0)
+        return -1;
 #if (SIZEOF_LONG > SIZEOF_INT)
-	if ((x < ((long)INT_MIN)) || (x > ((long)INT_MAX)))
-		RANGE_ERROR(x, f, 0, -1);
+    if ((x < ((long)INT_MIN)) || (x > ((long)INT_MAX)))
+        RANGE_ERROR(x, f, 0, -1);
 #endif
-	y = (int)x;
-	memcpy(p, (char *)&y, sizeof y);
-	return 0;
+    y = (int)x;
+    memcpy(p, (char *)&y, sizeof y);
+    return 0;
 }
 
 static int
 np_uint(char *p, PyObject *v, const formatdef *f)
 {
-	unsigned long x;
-	unsigned int y;
-	if (get_ulong(v, &x) < 0)
-		return -1;
-	y = (unsigned int)x;
+    unsigned long x;
+    unsigned int y;
+    if (get_ulong(v, &x) < 0)
+        return -1;
+    y = (unsigned int)x;
 #if (SIZEOF_LONG > SIZEOF_INT)
-	if (x > ((unsigned long)UINT_MAX))
-		RANGE_ERROR(y, f, 1, -1);
+    if (x > ((unsigned long)UINT_MAX))
+        RANGE_ERROR(y, f, 1, -1);
 #endif
-	memcpy(p, (char *)&y, sizeof y);
-	return 0;
+    memcpy(p, (char *)&y, sizeof y);
+    return 0;
 }
 
 static int
 np_long(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	if (get_long(v, &x) < 0)
-		return -1;
-	memcpy(p, (char *)&x, sizeof x);
-	return 0;
+    long x;
+    if (get_long(v, &x) < 0)
+        return -1;
+    memcpy(p, (char *)&x, sizeof x);
+    return 0;
 }
 
 static int
 np_ulong(char *p, PyObject *v, const formatdef *f)
 {
-	unsigned long x;
-	if (get_ulong(v, &x) < 0)
-		return -1;
-	memcpy(p, (char *)&x, sizeof x);
-	return 0;
+    unsigned long x;
+    if (get_ulong(v, &x) < 0)
+        return -1;
+    memcpy(p, (char *)&x, sizeof x);
+    return 0;
 }
 
 #ifdef HAVE_LONG_LONG
@@ -558,21 +558,21 @@ np_ulong(char *p, PyObject *v, const formatdef *f)
 static int
 np_longlong(char *p, PyObject *v, const formatdef *f)
 {
-	PY_LONG_LONG x;
-	if (get_longlong(v, &x) < 0)
-		return -1;
-	memcpy(p, (char *)&x, sizeof x);
-	return 0;
+    PY_LONG_LONG x;
+    if (get_longlong(v, &x) < 0)
+        return -1;
+    memcpy(p, (char *)&x, sizeof x);
+    return 0;
 }
 
 static int
 np_ulonglong(char *p, PyObject *v, const formatdef *f)
 {
-	unsigned PY_LONG_LONG x;
-	if (get_ulonglong(v, &x) < 0)
-		return -1;
-	memcpy(p, (char *)&x, sizeof x);
-	return 0;
+    unsigned PY_LONG_LONG x;
+    if (get_ulonglong(v, &x) < 0)
+        return -1;
+    memcpy(p, (char *)&x, sizeof x);
+    return 0;
 }
 #endif
 
@@ -580,77 +580,77 @@ np_ulonglong(char *p, PyObject *v, const formatdef *f)
 static int
 np_bool(char *p, PyObject *v, const formatdef *f)
 {
-	BOOL_TYPE y; 
-	y = PyObject_IsTrue(v);
-	memcpy(p, (char *)&y, sizeof y);
-	return 0;
+    BOOL_TYPE y;
+    y = PyObject_IsTrue(v);
+    memcpy(p, (char *)&y, sizeof y);
+    return 0;
 }
 
 static int
 np_float(char *p, PyObject *v, const formatdef *f)
 {
-	float x = (float)PyFloat_AsDouble(v);
-	if (x == -1 && PyErr_Occurred()) {
-		PyErr_SetString(StructError,
-				"required argument is not a float");
-		return -1;
-	}
-	memcpy(p, (char *)&x, sizeof x);
-	return 0;
+    float x = (float)PyFloat_AsDouble(v);
+    if (x == -1 && PyErr_Occurred()) {
+        PyErr_SetString(StructError,
+                        "required argument is not a float");
+        return -1;
+    }
+    memcpy(p, (char *)&x, sizeof x);
+    return 0;
 }
 
 static int
 np_double(char *p, PyObject *v, const formatdef *f)
 {
-	double x = PyFloat_AsDouble(v);
-	if (x == -1 && PyErr_Occurred()) {
-		PyErr_SetString(StructError,
-				"required argument is not a float");
-		return -1;
-	}
-	memcpy(p, (char *)&x, sizeof(double));
-	return 0;
+    double x = PyFloat_AsDouble(v);
+    if (x == -1 && PyErr_Occurred()) {
+        PyErr_SetString(StructError,
+                        "required argument is not a float");
+        return -1;
+    }
+    memcpy(p, (char *)&x, sizeof(double));
+    return 0;
 }
 
 static int
 np_void_p(char *p, PyObject *v, const formatdef *f)
 {
-	void *x;
+    void *x;
 
-	v = get_pylong(v);
-	if (v == NULL)
-		return -1;
-	assert(PyLong_Check(v));
-	x = PyLong_AsVoidPtr(v);
-	Py_DECREF(v);
-	if (x == NULL && PyErr_Occurred())
-		return -1;
-	memcpy(p, (char *)&x, sizeof x);
-	return 0;
+    v = get_pylong(v);
+    if (v == NULL)
+        return -1;
+    assert(PyLong_Check(v));
+    x = PyLong_AsVoidPtr(v);
+    Py_DECREF(v);
+    if (x == NULL && PyErr_Occurred())
+        return -1;
+    memcpy(p, (char *)&x, sizeof x);
+    return 0;
 }
 
 static formatdef native_table[] = {
-	{'x',	sizeof(char),	0,		NULL},
-	{'b',	sizeof(char),	0,		nu_byte,	np_byte},
-	{'B',	sizeof(char),	0,		nu_ubyte,	np_ubyte},
-	{'c',	sizeof(char),	0,		nu_char,	np_char},
-	{'s',	sizeof(char),	0,		NULL},
-	{'p',	sizeof(char),	0,		NULL},
-	{'h',	sizeof(short),	SHORT_ALIGN,	nu_short,	np_short},
-	{'H',	sizeof(short),	SHORT_ALIGN,	nu_ushort,	np_ushort},
-	{'i',	sizeof(int),	INT_ALIGN,	nu_int,		np_int},
-	{'I',	sizeof(int),	INT_ALIGN,	nu_uint,	np_uint},
-	{'l',	sizeof(long),	LONG_ALIGN,	nu_long,	np_long},
-	{'L',	sizeof(long),	LONG_ALIGN,	nu_ulong,	np_ulong},
+    {'x',       sizeof(char),   0,              NULL},
+    {'b',       sizeof(char),   0,              nu_byte,        np_byte},
+    {'B',       sizeof(char),   0,              nu_ubyte,       np_ubyte},
+    {'c',       sizeof(char),   0,              nu_char,        np_char},
+    {'s',       sizeof(char),   0,              NULL},
+    {'p',       sizeof(char),   0,              NULL},
+    {'h',       sizeof(short),  SHORT_ALIGN,    nu_short,       np_short},
+    {'H',       sizeof(short),  SHORT_ALIGN,    nu_ushort,      np_ushort},
+    {'i',       sizeof(int),    INT_ALIGN,      nu_int,         np_int},
+    {'I',       sizeof(int),    INT_ALIGN,      nu_uint,        np_uint},
+    {'l',       sizeof(long),   LONG_ALIGN,     nu_long,        np_long},
+    {'L',       sizeof(long),   LONG_ALIGN,     nu_ulong,       np_ulong},
 #ifdef HAVE_LONG_LONG
-	{'q',	sizeof(PY_LONG_LONG), LONG_LONG_ALIGN, nu_longlong, np_longlong},
-	{'Q',	sizeof(PY_LONG_LONG), LONG_LONG_ALIGN, nu_ulonglong,np_ulonglong},
+    {'q',       sizeof(PY_LONG_LONG), LONG_LONG_ALIGN, nu_longlong, np_longlong},
+    {'Q',       sizeof(PY_LONG_LONG), LONG_LONG_ALIGN, nu_ulonglong,np_ulonglong},
 #endif
-	{'?',	sizeof(BOOL_TYPE),	BOOL_ALIGN,	nu_bool,	np_bool},
-	{'f',	sizeof(float),	FLOAT_ALIGN,	nu_float,	np_float},
-	{'d',	sizeof(double),	DOUBLE_ALIGN,	nu_double,	np_double},
-	{'P',	sizeof(void *),	VOID_P_ALIGN,	nu_void_p,	np_void_p},
-	{0}
+    {'?',       sizeof(BOOL_TYPE),      BOOL_ALIGN,     nu_bool,        np_bool},
+    {'f',       sizeof(float),  FLOAT_ALIGN,    nu_float,       np_float},
+    {'d',       sizeof(double), DOUBLE_ALIGN,   nu_double,      np_double},
+    {'P',       sizeof(void *), VOID_P_ALIGN,   nu_void_p,      np_void_p},
+    {0}
 };
 
 /* Big-endian routines. *****************************************************/
@@ -658,53 +658,53 @@ static formatdef native_table[] = {
 static PyObject *
 bu_int(const char *p, const formatdef *f)
 {
-	long x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | *bytes++;
-	} while (--i > 0);
-	/* Extend the sign bit. */
-	if (SIZEOF_LONG > f->size)
-		x |= -(x & (1L << ((8 * f->size) - 1)));
-	return PyLong_FromLong(x);
+    long x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | *bytes++;
+    } while (--i > 0);
+    /* Extend the sign bit. */
+    if (SIZEOF_LONG > f->size)
+        x |= -(x & (1L << ((8 * f->size) - 1)));
+    return PyLong_FromLong(x);
 }
 
 static PyObject *
 bu_uint(const char *p, const formatdef *f)
 {
-	unsigned long x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | *bytes++;
-	} while (--i > 0);
-	if (x <= LONG_MAX)
-		return PyLong_FromLong((long)x);
-	return PyLong_FromUnsignedLong(x);
+    unsigned long x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | *bytes++;
+    } while (--i > 0);
+    if (x <= LONG_MAX)
+        return PyLong_FromLong((long)x);
+    return PyLong_FromUnsignedLong(x);
 }
 
 static PyObject *
 bu_longlong(const char *p, const formatdef *f)
 {
 #ifdef HAVE_LONG_LONG
-	PY_LONG_LONG x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | *bytes++;
-	} while (--i > 0);
-	/* Extend the sign bit. */
-	if (SIZEOF_LONG_LONG > f->size)
-		x |= -(x & ((PY_LONG_LONG)1 << ((8 * f->size) - 1)));
-	if (x >= LONG_MIN && x <= LONG_MAX)
-		return PyLong_FromLong(Py_SAFE_DOWNCAST(x, PY_LONG_LONG, long));
-	return PyLong_FromLongLong(x);
+    PY_LONG_LONG x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | *bytes++;
+    } while (--i > 0);
+    /* Extend the sign bit. */
+    if (SIZEOF_LONG_LONG > f->size)
+        x |= -(x & ((PY_LONG_LONG)1 << ((8 * f->size) - 1)));
+    if (x >= LONG_MIN && x <= LONG_MAX)
+        return PyLong_FromLong(Py_SAFE_DOWNCAST(x, PY_LONG_LONG, long));
+    return PyLong_FromLongLong(x);
 #else
-	return _PyLong_FromByteArray((const unsigned char *)p,
-				      8,
-				      0, /* little-endian */
-				      1  /* signed */);
+    return _PyLong_FromByteArray((const unsigned char *)p,
+                                  8,
+                                  0, /* little-endian */
+                      1  /* signed */);
 #endif
 }
 
@@ -712,171 +712,171 @@ static PyObject *
 bu_ulonglong(const char *p, const formatdef *f)
 {
 #ifdef HAVE_LONG_LONG
-	unsigned PY_LONG_LONG x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | *bytes++;
-	} while (--i > 0);
-	if (x <= LONG_MAX)
-		return PyLong_FromLong(Py_SAFE_DOWNCAST(x, unsigned PY_LONG_LONG, long));
-	return PyLong_FromUnsignedLongLong(x);
+    unsigned PY_LONG_LONG x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | *bytes++;
+    } while (--i > 0);
+    if (x <= LONG_MAX)
+        return PyLong_FromLong(Py_SAFE_DOWNCAST(x, unsigned PY_LONG_LONG, long));
+    return PyLong_FromUnsignedLongLong(x);
 #else
-	return _PyLong_FromByteArray((const unsigned char *)p,
-				      8,
-				      0, /* little-endian */
-				      0  /* signed */);
+    return _PyLong_FromByteArray((const unsigned char *)p,
+                                  8,
+                                  0, /* little-endian */
+                      0  /* signed */);
 #endif
 }
 
 static PyObject *
 bu_float(const char *p, const formatdef *f)
 {
-	return unpack_float(p, 0);
+    return unpack_float(p, 0);
 }
 
 static PyObject *
 bu_double(const char *p, const formatdef *f)
 {
-	return unpack_double(p, 0);
+    return unpack_double(p, 0);
 }
 
 static PyObject *
 bu_bool(const char *p, const formatdef *f)
 {
-	char x;
-	memcpy((char *)&x, p, sizeof x);
-	return PyBool_FromLong(x != 0);
+    char x;
+    memcpy((char *)&x, p, sizeof x);
+    return PyBool_FromLong(x != 0);
 }
 
 static int
 bp_int(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	Py_ssize_t i;
-	if (get_long(v, &x) < 0)
-		return -1;
-	i = f->size;
-	if (i != SIZEOF_LONG) {
-		if ((i == 2) && (x < -32768 || x > 32767))
-			RANGE_ERROR(x, f, 0, 0xffffL);
+    long x;
+    Py_ssize_t i;
+    if (get_long(v, &x) < 0)
+        return -1;
+    i = f->size;
+    if (i != SIZEOF_LONG) {
+        if ((i == 2) && (x < -32768 || x > 32767))
+            RANGE_ERROR(x, f, 0, 0xffffL);
 #if (SIZEOF_LONG != 4)
-		else if ((i == 4) && (x < -2147483648L || x > 2147483647L))
-			RANGE_ERROR(x, f, 0, 0xffffffffL);
+        else if ((i == 4) && (x < -2147483648L || x > 2147483647L))
+            RANGE_ERROR(x, f, 0, 0xffffffffL);
 #endif
-	}
-	do {
-		p[--i] = (char)x;
-		x >>= 8;
-	} while (i > 0);
-	return 0;
+    }
+    do {
+        p[--i] = (char)x;
+        x >>= 8;
+    } while (i > 0);
+    return 0;
 }
 
 static int
 bp_uint(char *p, PyObject *v, const formatdef *f)
 {
-	unsigned long x;
-	Py_ssize_t i;
-	if (get_ulong(v, &x) < 0)
-		return -1;
-	i = f->size;
-	if (i != SIZEOF_LONG) {
-		unsigned long maxint = 1;
-		maxint <<= (unsigned long)(i * 8);
-		if (x >= maxint)
-			RANGE_ERROR(x, f, 1, maxint - 1);
-	}
-	do {
-		p[--i] = (char)x;
-		x >>= 8;
-	} while (i > 0);
-	return 0;
+    unsigned long x;
+    Py_ssize_t i;
+    if (get_ulong(v, &x) < 0)
+        return -1;
+    i = f->size;
+    if (i != SIZEOF_LONG) {
+        unsigned long maxint = 1;
+        maxint <<= (unsigned long)(i * 8);
+        if (x >= maxint)
+            RANGE_ERROR(x, f, 1, maxint - 1);
+    }
+    do {
+        p[--i] = (char)x;
+        x >>= 8;
+    } while (i > 0);
+    return 0;
 }
 
 static int
 bp_longlong(char *p, PyObject *v, const formatdef *f)
 {
-	int res;
-	v = get_pylong(v);
-	if (v == NULL)
-		return -1;
-	res = _PyLong_AsByteArray((PyLongObject *)v,
-			   	  (unsigned char *)p,
-				  8,
-				  0, /* little_endian */
-				  1  /* signed */);
-	Py_DECREF(v);
-	return res;
+    int res;
+    v = get_pylong(v);
+    if (v == NULL)
+        return -1;
+    res = _PyLong_AsByteArray((PyLongObject *)v,
+                              (unsigned char *)p,
+                              8,
+                              0, /* little_endian */
+                  1  /* signed */);
+    Py_DECREF(v);
+    return res;
 }
 
 static int
 bp_ulonglong(char *p, PyObject *v, const formatdef *f)
 {
-	int res;
-	v = get_pylong(v);
-	if (v == NULL)
-		return -1;
-	res = _PyLong_AsByteArray((PyLongObject *)v,
-			   	  (unsigned char *)p,
-				  8,
-				  0, /* little_endian */
-				  0  /* signed */);
-	Py_DECREF(v);
-	return res;
+    int res;
+    v = get_pylong(v);
+    if (v == NULL)
+        return -1;
+    res = _PyLong_AsByteArray((PyLongObject *)v,
+                              (unsigned char *)p,
+                              8,
+                              0, /* little_endian */
+                  0  /* signed */);
+    Py_DECREF(v);
+    return res;
 }
 
 static int
 bp_float(char *p, PyObject *v, const formatdef *f)
 {
-	double x = PyFloat_AsDouble(v);
-	if (x == -1 && PyErr_Occurred()) {
-		PyErr_SetString(StructError,
-				"required argument is not a float");
-		return -1;
-	}
-	return _PyFloat_Pack4(x, (unsigned char *)p, 0);
+    double x = PyFloat_AsDouble(v);
+    if (x == -1 && PyErr_Occurred()) {
+        PyErr_SetString(StructError,
+                        "required argument is not a float");
+        return -1;
+    }
+    return _PyFloat_Pack4(x, (unsigned char *)p, 0);
 }
 
 static int
 bp_double(char *p, PyObject *v, const formatdef *f)
 {
-	double x = PyFloat_AsDouble(v);
-	if (x == -1 && PyErr_Occurred()) {
-		PyErr_SetString(StructError,
-				"required argument is not a float");
-		return -1;
-	}
-	return _PyFloat_Pack8(x, (unsigned char *)p, 0);
+    double x = PyFloat_AsDouble(v);
+    if (x == -1 && PyErr_Occurred()) {
+        PyErr_SetString(StructError,
+                        "required argument is not a float");
+        return -1;
+    }
+    return _PyFloat_Pack8(x, (unsigned char *)p, 0);
 }
 
 static int
 bp_bool(char *p, PyObject *v, const formatdef *f)
 {
-	char y; 
-	y = PyObject_IsTrue(v);
-	memcpy(p, (char *)&y, sizeof y);
-	return 0;
+    char y;
+    y = PyObject_IsTrue(v);
+    memcpy(p, (char *)&y, sizeof y);
+    return 0;
 }
 
 static formatdef bigendian_table[] = {
-	{'x',	1,		0,		NULL},
-	{'b',	1,		0,		nu_byte,	np_byte},
-	{'B',	1,		0,		nu_ubyte,	np_ubyte},
-	{'c',	1,		0,		nu_char,	np_char},
-	{'s',	1,		0,		NULL},
-	{'p',	1,		0,		NULL},
-	{'h',	2,		0,		bu_int,		bp_int},
-	{'H',	2,		0,		bu_uint,	bp_uint},
-	{'i',	4,		0,		bu_int,		bp_int},
-	{'I',	4,		0,		bu_uint,	bp_uint},
-	{'l',	4,		0,		bu_int,		bp_int},
-	{'L',	4,		0,		bu_uint,	bp_uint},
-	{'q',	8,		0,		bu_longlong,	bp_longlong},
-	{'Q',	8,		0,		bu_ulonglong,	bp_ulonglong},
-	{'?',	1,		0,		bu_bool,	bp_bool},
-	{'f',	4,		0,		bu_float,	bp_float},
-	{'d',	8,		0,		bu_double,	bp_double},
-	{0}
+    {'x',       1,              0,              NULL},
+    {'b',       1,              0,              nu_byte,        np_byte},
+    {'B',       1,              0,              nu_ubyte,       np_ubyte},
+    {'c',       1,              0,              nu_char,        np_char},
+    {'s',       1,              0,              NULL},
+    {'p',       1,              0,              NULL},
+    {'h',       2,              0,              bu_int,         bp_int},
+    {'H',       2,              0,              bu_uint,        bp_uint},
+    {'i',       4,              0,              bu_int,         bp_int},
+    {'I',       4,              0,              bu_uint,        bp_uint},
+    {'l',       4,              0,              bu_int,         bp_int},
+    {'L',       4,              0,              bu_uint,        bp_uint},
+    {'q',       8,              0,              bu_longlong,    bp_longlong},
+    {'Q',       8,              0,              bu_ulonglong,   bp_ulonglong},
+    {'?',       1,              0,              bu_bool,        bp_bool},
+    {'f',       4,              0,              bu_float,       bp_float},
+    {'d',       8,              0,              bu_double,      bp_double},
+    {0}
 };
 
 /* Little-endian routines. *****************************************************/
@@ -884,53 +884,53 @@ static formatdef bigendian_table[] = {
 static PyObject *
 lu_int(const char *p, const formatdef *f)
 {
-	long x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | bytes[--i];
-	} while (i > 0);
-	/* Extend the sign bit. */
-	if (SIZEOF_LONG > f->size)
-		x |= -(x & (1L << ((8 * f->size) - 1)));
-	return PyLong_FromLong(x);
+    long x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | bytes[--i];
+    } while (i > 0);
+    /* Extend the sign bit. */
+    if (SIZEOF_LONG > f->size)
+        x |= -(x & (1L << ((8 * f->size) - 1)));
+    return PyLong_FromLong(x);
 }
 
 static PyObject *
 lu_uint(const char *p, const formatdef *f)
 {
-	unsigned long x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | bytes[--i];
-	} while (i > 0);
-	if (x <= LONG_MAX)
-		return PyLong_FromLong((long)x);
-	return PyLong_FromUnsignedLong((long)x);
+    unsigned long x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | bytes[--i];
+    } while (i > 0);
+    if (x <= LONG_MAX)
+        return PyLong_FromLong((long)x);
+    return PyLong_FromUnsignedLong((long)x);
 }
 
 static PyObject *
 lu_longlong(const char *p, const formatdef *f)
 {
 #ifdef HAVE_LONG_LONG
-	PY_LONG_LONG x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | bytes[--i];
-	} while (i > 0);
-	/* Extend the sign bit. */
-	if (SIZEOF_LONG_LONG > f->size)
-		x |= -(x & ((PY_LONG_LONG)1 << ((8 * f->size) - 1)));
-	if (x >= LONG_MIN && x <= LONG_MAX)
-		return PyLong_FromLong(Py_SAFE_DOWNCAST(x, PY_LONG_LONG, long));
-	return PyLong_FromLongLong(x);
+    PY_LONG_LONG x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | bytes[--i];
+    } while (i > 0);
+    /* Extend the sign bit. */
+    if (SIZEOF_LONG_LONG > f->size)
+        x |= -(x & ((PY_LONG_LONG)1 << ((8 * f->size) - 1)));
+    if (x >= LONG_MIN && x <= LONG_MAX)
+        return PyLong_FromLong(Py_SAFE_DOWNCAST(x, PY_LONG_LONG, long));
+    return PyLong_FromLongLong(x);
 #else
-	return _PyLong_FromByteArray((const unsigned char *)p,
-				      8,
-				      1, /* little-endian */
-				      1  /* signed */);
+    return _PyLong_FromByteArray((const unsigned char *)p,
+                                  8,
+                                  1, /* little-endian */
+                      1  /* signed */);
 #endif
 }
 
@@ -938,182 +938,182 @@ static PyObject *
 lu_ulonglong(const char *p, const formatdef *f)
 {
 #ifdef HAVE_LONG_LONG
-	unsigned PY_LONG_LONG x = 0;
-	Py_ssize_t i = f->size;
-	const unsigned char *bytes = (const unsigned char *)p;
-	do {
-		x = (x<<8) | bytes[--i];
-	} while (i > 0);
-	if (x <= LONG_MAX)
-		return PyLong_FromLong(Py_SAFE_DOWNCAST(x, unsigned PY_LONG_LONG, long));
-	return PyLong_FromUnsignedLongLong(x);
+    unsigned PY_LONG_LONG x = 0;
+    Py_ssize_t i = f->size;
+    const unsigned char *bytes = (const unsigned char *)p;
+    do {
+        x = (x<<8) | bytes[--i];
+    } while (i > 0);
+    if (x <= LONG_MAX)
+        return PyLong_FromLong(Py_SAFE_DOWNCAST(x, unsigned PY_LONG_LONG, long));
+    return PyLong_FromUnsignedLongLong(x);
 #else
-	return _PyLong_FromByteArray((const unsigned char *)p,
-				      8,
-				      1, /* little-endian */
-				      0  /* signed */);
+    return _PyLong_FromByteArray((const unsigned char *)p,
+                                  8,
+                                  1, /* little-endian */
+                      0  /* signed */);
 #endif
 }
 
 static PyObject *
 lu_float(const char *p, const formatdef *f)
 {
-	return unpack_float(p, 1);
+    return unpack_float(p, 1);
 }
 
 static PyObject *
 lu_double(const char *p, const formatdef *f)
 {
-	return unpack_double(p, 1);
+    return unpack_double(p, 1);
 }
 
 static int
 lp_int(char *p, PyObject *v, const formatdef *f)
 {
-	long x;
-	Py_ssize_t i;
-	if (get_long(v, &x) < 0)
-		return -1;
-	i = f->size;
-	if (i != SIZEOF_LONG) {
-		if ((i == 2) && (x < -32768 || x > 32767))
-			RANGE_ERROR(x, f, 0, 0xffffL);
+    long x;
+    Py_ssize_t i;
+    if (get_long(v, &x) < 0)
+        return -1;
+    i = f->size;
+    if (i != SIZEOF_LONG) {
+        if ((i == 2) && (x < -32768 || x > 32767))
+            RANGE_ERROR(x, f, 0, 0xffffL);
 #if (SIZEOF_LONG != 4)
-		else if ((i == 4) && (x < -2147483648L || x > 2147483647L))
-			RANGE_ERROR(x, f, 0, 0xffffffffL);
+        else if ((i == 4) && (x < -2147483648L || x > 2147483647L))
+            RANGE_ERROR(x, f, 0, 0xffffffffL);
 #endif
-	}
-	do {
-		*p++ = (char)x;
-		x >>= 8;
-	} while (--i > 0);
-	return 0;
+    }
+    do {
+        *p++ = (char)x;
+        x >>= 8;
+    } while (--i > 0);
+    return 0;
 }
 
 static int
 lp_uint(char *p, PyObject *v, const formatdef *f)
 {
-	unsigned long x;
-	Py_ssize_t i;
-	if (get_ulong(v, &x) < 0)
-		return -1;
-	i = f->size;
-	if (i != SIZEOF_LONG) {
-		unsigned long maxint = 1;
-		maxint <<= (unsigned long)(i * 8);
-		if (x >= maxint)
-			RANGE_ERROR(x, f, 1, maxint - 1);
-	}
-	do {
-		*p++ = (char)x;
-		x >>= 8;
-	} while (--i > 0);
-	return 0;
+    unsigned long x;
+    Py_ssize_t i;
+    if (get_ulong(v, &x) < 0)
+        return -1;
+    i = f->size;
+    if (i != SIZEOF_LONG) {
+        unsigned long maxint = 1;
+        maxint <<= (unsigned long)(i * 8);
+        if (x >= maxint)
+            RANGE_ERROR(x, f, 1, maxint - 1);
+    }
+    do {
+        *p++ = (char)x;
+        x >>= 8;
+    } while (--i > 0);
+    return 0;
 }
 
 static int
 lp_longlong(char *p, PyObject *v, const formatdef *f)
 {
-	int res;
-	v = get_pylong(v);
-	if (v == NULL)
-		return -1;
-	res = _PyLong_AsByteArray((PyLongObject*)v,
-			   	  (unsigned char *)p,
-				  8,
-				  1, /* little_endian */
-				  1  /* signed */);
-	Py_DECREF(v);
-	return res;
+    int res;
+    v = get_pylong(v);
+    if (v == NULL)
+        return -1;
+    res = _PyLong_AsByteArray((PyLongObject*)v,
+                              (unsigned char *)p,
+                              8,
+                              1, /* little_endian */
+                  1  /* signed */);
+    Py_DECREF(v);
+    return res;
 }
 
 static int
 lp_ulonglong(char *p, PyObject *v, const formatdef *f)
 {
-	int res;
-	v = get_pylong(v);
-	if (v == NULL)
-		return -1;
-	res = _PyLong_AsByteArray((PyLongObject*)v,
-			   	  (unsigned char *)p,
-				  8,
-				  1, /* little_endian */
-				  0  /* signed */);
-	Py_DECREF(v);
-	return res;
+    int res;
+    v = get_pylong(v);
+    if (v == NULL)
+        return -1;
+    res = _PyLong_AsByteArray((PyLongObject*)v,
+                              (unsigned char *)p,
+                              8,
+                              1, /* little_endian */
+                  0  /* signed */);
+    Py_DECREF(v);
+    return res;
 }
 
 static int
 lp_float(char *p, PyObject *v, const formatdef *f)
 {
-	double x = PyFloat_AsDouble(v);
-	if (x == -1 && PyErr_Occurred()) {
-		PyErr_SetString(StructError,
-				"required argument is not a float");
-		return -1;
-	}
-	return _PyFloat_Pack4(x, (unsigned char *)p, 1);
+    double x = PyFloat_AsDouble(v);
+    if (x == -1 && PyErr_Occurred()) {
+        PyErr_SetString(StructError,
+                        "required argument is not a float");
+        return -1;
+    }
+    return _PyFloat_Pack4(x, (unsigned char *)p, 1);
 }
 
 static int
 lp_double(char *p, PyObject *v, const formatdef *f)
 {
-	double x = PyFloat_AsDouble(v);
-	if (x == -1 && PyErr_Occurred()) {
-		PyErr_SetString(StructError,
-				"required argument is not a float");
-		return -1;
-	}
-	return _PyFloat_Pack8(x, (unsigned char *)p, 1);
+    double x = PyFloat_AsDouble(v);
+    if (x == -1 && PyErr_Occurred()) {
+        PyErr_SetString(StructError,
+                        "required argument is not a float");
+        return -1;
+    }
+    return _PyFloat_Pack8(x, (unsigned char *)p, 1);
 }
 
 static formatdef lilendian_table[] = {
-	{'x',	1,		0,		NULL},
-	{'b',	1,		0,		nu_byte,	np_byte},
-	{'B',	1,		0,		nu_ubyte,	np_ubyte},
-	{'c',	1,		0,		nu_char,	np_char},
-	{'s',	1,		0,		NULL},
-	{'p',	1,		0,		NULL},
-	{'h',	2,		0,		lu_int,		lp_int},
-	{'H',	2,		0,		lu_uint,	lp_uint},
-	{'i',	4,		0,		lu_int,		lp_int},
-	{'I',	4,		0,		lu_uint,	lp_uint},
-	{'l',	4,		0,		lu_int,		lp_int},
-	{'L',	4,		0,		lu_uint,	lp_uint},
-	{'q',	8,		0,		lu_longlong,	lp_longlong},
-	{'Q',	8,		0,		lu_ulonglong,	lp_ulonglong},
-	{'?',	1,		0,		bu_bool,	bp_bool}, /* Std rep not endian dep,
-		but potentially different from native rep -- reuse bx_bool funcs. */
-	{'f',	4,		0,		lu_float,	lp_float},
-	{'d',	8,		0,		lu_double,	lp_double},
-	{0}
+    {'x',       1,              0,              NULL},
+    {'b',       1,              0,              nu_byte,        np_byte},
+    {'B',       1,              0,              nu_ubyte,       np_ubyte},
+    {'c',       1,              0,              nu_char,        np_char},
+    {'s',       1,              0,              NULL},
+    {'p',       1,              0,              NULL},
+    {'h',       2,              0,              lu_int,         lp_int},
+    {'H',       2,              0,              lu_uint,        lp_uint},
+    {'i',       4,              0,              lu_int,         lp_int},
+    {'I',       4,              0,              lu_uint,        lp_uint},
+    {'l',       4,              0,              lu_int,         lp_int},
+    {'L',       4,              0,              lu_uint,        lp_uint},
+    {'q',       8,              0,              lu_longlong,    lp_longlong},
+    {'Q',       8,              0,              lu_ulonglong,   lp_ulonglong},
+    {'?',       1,              0,              bu_bool,        bp_bool}, /* Std rep not endian dep,
+        but potentially different from native rep -- reuse bx_bool funcs. */
+    {'f',       4,              0,              lu_float,       lp_float},
+    {'d',       8,              0,              lu_double,      lp_double},
+    {0}
 };
 
 
 static const formatdef *
 whichtable(char **pfmt)
 {
-	const char *fmt = (*pfmt)++; /* May be backed out of later */
-	switch (*fmt) {
-	case '<':
-		return lilendian_table;
-	case '>':
-	case '!': /* Network byte order is big-endian */
-		return bigendian_table;
-	case '=': { /* Host byte order -- different from native in aligment! */
-		int n = 1;
-		char *p = (char *) &n;
-		if (*p == 1)
-			return lilendian_table;
-		else
-			return bigendian_table;
-	}
-	default:
-		--*pfmt; /* Back out of pointer increment */
-		/* Fall through */
-	case '@':
-		return native_table;
-	}
+    const char *fmt = (*pfmt)++; /* May be backed out of later */
+    switch (*fmt) {
+    case '<':
+        return lilendian_table;
+    case '>':
+    case '!': /* Network byte order is big-endian */
+        return bigendian_table;
+    case '=': { /* Host byte order -- different from native in aligment! */
+        int n = 1;
+        char *p = (char *) &n;
+        if (*p == 1)
+            return lilendian_table;
+        else
+            return bigendian_table;
+    }
+    default:
+        --*pfmt; /* Back out of pointer increment */
+        /* Fall through */
+    case '@':
+        return native_table;
+    }
 }
 
 
@@ -1122,13 +1122,13 @@ whichtable(char **pfmt)
 static const formatdef *
 getentry(int c, const formatdef *f)
 {
-	for (; f->format != '\0'; f++) {
-		if (f->format == c) {
-			return f;
-		}
-	}
-	PyErr_SetString(StructError, "bad char in struct format");
-	return NULL;
+    for (; f->format != '\0'; f++) {
+        if (f->format == c) {
+            return f;
+        }
+    }
+    PyErr_SetString(StructError, "bad char in struct format");
+    return NULL;
 }
 
 
@@ -1137,14 +1137,14 @@ getentry(int c, const formatdef *f)
 static int
 align(Py_ssize_t size, char c, const formatdef *e)
 {
-	if (e->format == c) {
-		if (e->alignment) {
-			size = ((size + e->alignment - 1)
-				/ e->alignment)
-				* e->alignment;
-		}
-	}
-	return size;
+    if (e->format == c) {
+        if (e->alignment) {
+            size = ((size + e->alignment - 1)
+                / e->alignment)
+                * e->alignment;
+        }
+    }
+    return size;
 }
 
 
@@ -1153,224 +1153,224 @@ align(Py_ssize_t size, char c, const formatdef *e)
 static int
 prepare_s(PyStructObject *self)
 {
-	const formatdef *f;
-	const formatdef *e;
-	formatcode *codes;
-
-	const char *s;
-	const char *fmt;
-	char c;
-	Py_ssize_t size, len, num, itemsize, x;
-
-	fmt = PyBytes_AS_STRING(self->s_format);
-
-	f = whichtable((char **)&fmt);
-
-	s = fmt;
-	size = 0;
-	len = 0;
-	while ((c = *s++) != '\0') {
-		if (isspace(Py_CHARMASK(c)))
-			continue;
-		if ('0' <= c && c <= '9') {
-			num = c - '0';
-			while ('0' <= (c = *s++) && c <= '9') {
-				x = num*10 + (c - '0');
-				if (x/10 != num) {
-					PyErr_SetString(
-						StructError,
-						"overflow in item count");
-					return -1;
-				}
-				num = x;
-			}
-			if (c == '\0')
-				break;
-		}
-		else
-			num = 1;
-
-		e = getentry(c, f);
-		if (e == NULL)
-			return -1;
-
-		switch (c) {
-			case 's': /* fall through */
-			case 'p': len++; break;
-			case 'x': break;
-			default: len += num; break;
-		}
-
-		itemsize = e->size;
-		size = align(size, c, e);
-		x = num * itemsize;
-		size += x;
-		if (x/itemsize != num || size < 0) {
-			PyErr_SetString(StructError,
-					"total struct size too long");
-			return -1;
-		}
-	}
-
-	/* check for overflow */
-	if ((len + 1) > (PY_SSIZE_T_MAX / sizeof(formatcode))) {
-		PyErr_NoMemory();
-		return -1;
-	}
-
-	self->s_size = size;
-	self->s_len = len;
-	codes = PyMem_MALLOC((len + 1) * sizeof(formatcode));
-	if (codes == NULL) {
-		PyErr_NoMemory();
-		return -1;
-	}
-	self->s_codes = codes;
-
-	s = fmt;
-	size = 0;
-	while ((c = *s++) != '\0') {
-		if (isspace(Py_CHARMASK(c)))
-			continue;
-		if ('0' <= c && c <= '9') {
-			num = c - '0';
-			while ('0' <= (c = *s++) && c <= '9')
-				num = num*10 + (c - '0');
-			if (c == '\0')
-				break;
-		}
-		else
-			num = 1;
-
-		e = getentry(c, f);
-
-		size = align(size, c, e);
-		if (c == 's' || c == 'p') {
-			codes->offset = size;
-			codes->size = num;
-			codes->fmtdef = e;
-			codes++;
-			size += num;
-		} else if (c == 'x') {
-			size += num;
-		} else {
-			while (--num >= 0) {
-				codes->offset = size;
-				codes->size = e->size;
-				codes->fmtdef = e;
-				codes++;
-				size += e->size;
-			}
-		}
-	}
-	codes->fmtdef = NULL;
-	codes->offset = size;
-	codes->size = 0;
-
-	return 0;
+    const formatdef *f;
+    const formatdef *e;
+    formatcode *codes;
+
+    const char *s;
+    const char *fmt;
+    char c;
+    Py_ssize_t size, len, num, itemsize, x;
+
+    fmt = PyBytes_AS_STRING(self->s_format);
+
+    f = whichtable((char **)&fmt);
+
+    s = fmt;
+    size = 0;
+    len = 0;
+    while ((c = *s++) != '\0') {
+        if (isspace(Py_CHARMASK(c)))
+            continue;
+        if ('0' <= c && c <= '9') {
+            num = c - '0';
+            while ('0' <= (c = *s++) && c <= '9') {
+                x = num*10 + (c - '0');
+                if (x/10 != num) {
+                    PyErr_SetString(
+                        StructError,
+                        "overflow in item count");
+                    return -1;
+                }
+                num = x;
+            }
+            if (c == '\0')
+                break;
+        }
+        else
+            num = 1;
+
+        e = getentry(c, f);
+        if (e == NULL)
+            return -1;
+
+        switch (c) {
+            case 's': /* fall through */
+            case 'p': len++; break;
+            case 'x': break;
+            default: len += num; break;
+        }
+
+        itemsize = e->size;
+        size = align(size, c, e);
+        x = num * itemsize;
+        size += x;
+        if (x/itemsize != num || size < 0) {
+            PyErr_SetString(StructError,
+                            "total struct size too long");
+            return -1;
+        }
+    }
+
+    /* check for overflow */
+    if ((len + 1) > (PY_SSIZE_T_MAX / sizeof(formatcode))) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
+    self->s_size = size;
+    self->s_len = len;
+    codes = PyMem_MALLOC((len + 1) * sizeof(formatcode));
+    if (codes == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+    self->s_codes = codes;
+
+    s = fmt;
+    size = 0;
+    while ((c = *s++) != '\0') {
+        if (isspace(Py_CHARMASK(c)))
+            continue;
+        if ('0' <= c && c <= '9') {
+            num = c - '0';
+            while ('0' <= (c = *s++) && c <= '9')
+                num = num*10 + (c - '0');
+            if (c == '\0')
+                break;
+        }
+        else
+            num = 1;
+
+        e = getentry(c, f);
+
+        size = align(size, c, e);
+        if (c == 's' || c == 'p') {
+            codes->offset = size;
+            codes->size = num;
+            codes->fmtdef = e;
+            codes++;
+            size += num;
+        } else if (c == 'x') {
+            size += num;
+        } else {
+            while (--num >= 0) {
+                codes->offset = size;
+                codes->size = e->size;
+                codes->fmtdef = e;
+                codes++;
+                size += e->size;
+            }
+        }
+    }
+    codes->fmtdef = NULL;
+    codes->offset = size;
+    codes->size = 0;
+
+    return 0;
 }
 
 static PyObject *
 s_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
-	PyObject *self;
+    PyObject *self;
 
-	assert(type != NULL && type->tp_alloc != NULL);
+    assert(type != NULL && type->tp_alloc != NULL);
 
-	self = type->tp_alloc(type, 0);
-	if (self != NULL) {
-		PyStructObject *s = (PyStructObject*)self;
-		Py_INCREF(Py_None);
-		s->s_format = Py_None;
-		s->s_codes = NULL;
-		s->s_size = -1;
-		s->s_len = -1;
-	}
-	return self;
+    self = type->tp_alloc(type, 0);
+    if (self != NULL) {
+        PyStructObject *s = (PyStructObject*)self;
+        Py_INCREF(Py_None);
+        s->s_format = Py_None;
+        s->s_codes = NULL;
+        s->s_size = -1;
+        s->s_len = -1;
+    }
+    return self;
 }
 
 static int
 s_init(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	PyStructObject *soself = (PyStructObject *)self;
-	PyObject *o_format = NULL;
-	int ret = 0;
-	static char *kwlist[] = {"format", 0};
+    PyStructObject *soself = (PyStructObject *)self;
+    PyObject *o_format = NULL;
+    int ret = 0;
+    static char *kwlist[] = {"format", 0};
 
-	assert(PyStruct_Check(self));
+    assert(PyStruct_Check(self));
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:Struct", kwlist,
-					 &o_format))
-		return -1;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:Struct", kwlist,
+                                     &o_format))
+        return -1;
 
-	if (PyUnicode_Check(o_format)) {
-		o_format = PyUnicode_AsASCIIString(o_format);
-		if (o_format == NULL)
-			return -1;
-	}
-	/* XXX support buffer interface, too */
-	else {
-		Py_INCREF(o_format);
-	}
+    if (PyUnicode_Check(o_format)) {
+        o_format = PyUnicode_AsASCIIString(o_format);
+        if (o_format == NULL)
+            return -1;
+    }
+    /* XXX support buffer interface, too */
+    else {
+        Py_INCREF(o_format);
+    }
 
-	if (!PyBytes_Check(o_format)) {
-		Py_DECREF(o_format);
-		PyErr_Format(PyExc_TypeError,
-			     "Struct() argument 1 must be bytes, not %.200s",
-			     Py_TYPE(o_format)->tp_name);
-		return -1;
-	}
+    if (!PyBytes_Check(o_format)) {
+        Py_DECREF(o_format);
+        PyErr_Format(PyExc_TypeError,
+                     "Struct() argument 1 must be bytes, not %.200s",
+                     Py_TYPE(o_format)->tp_name);
+        return -1;
+    }
 
-	Py_CLEAR(soself->s_format);
-	soself->s_format = o_format;
+    Py_CLEAR(soself->s_format);
+    soself->s_format = o_format;
 
-	ret = prepare_s(soself);
-	return ret;
+    ret = prepare_s(soself);
+    return ret;
 }
 
 static void
 s_dealloc(PyStructObject *s)
 {
-	if (s->weakreflist != NULL)
-		PyObject_ClearWeakRefs((PyObject *)s);
-	if (s->s_codes != NULL) {
-		PyMem_FREE(s->s_codes);
-	}
-	Py_XDECREF(s->s_format);
-	Py_TYPE(s)->tp_free((PyObject *)s);
+    if (s->weakreflist != NULL)
+        PyObject_ClearWeakRefs((PyObject *)s);
+    if (s->s_codes != NULL) {
+        PyMem_FREE(s->s_codes);
+    }
+    Py_XDECREF(s->s_format);
+    Py_TYPE(s)->tp_free((PyObject *)s);
 }
 
 static PyObject *
 s_unpack_internal(PyStructObject *soself, char *startfrom) {
-	formatcode *code;
-	Py_ssize_t i = 0;
-	PyObject *result = PyTuple_New(soself->s_len);
-	if (result == NULL)
-		return NULL;
-
-	for (code = soself->s_codes; code->fmtdef != NULL; code++) {
-		PyObject *v;
-		const formatdef *e = code->fmtdef;
-		const char *res = startfrom + code->offset;
-		if (e->format == 's') {
-			v = PyBytes_FromStringAndSize(res, code->size);
-		} else if (e->format == 'p') {
-			Py_ssize_t n = *(unsigned char*)res;
-			if (n >= code->size)
-				n = code->size - 1;
-			v = PyBytes_FromStringAndSize(res + 1, n);
-		} else {
-			v = e->unpack(res, e);
-		}
-		if (v == NULL)
-			goto fail;
-		PyTuple_SET_ITEM(result, i++, v);
-	}
-
-	return result;
+    formatcode *code;
+    Py_ssize_t i = 0;
+    PyObject *result = PyTuple_New(soself->s_len);
+    if (result == NULL)
+        return NULL;
+
+    for (code = soself->s_codes; code->fmtdef != NULL; code++) {
+        PyObject *v;
+        const formatdef *e = code->fmtdef;
+        const char *res = startfrom + code->offset;
+        if (e->format == 's') {
+            v = PyBytes_FromStringAndSize(res, code->size);
+        } else if (e->format == 'p') {
+            Py_ssize_t n = *(unsigned char*)res;
+            if (n >= code->size)
+                n = code->size - 1;
+            v = PyBytes_FromStringAndSize(res + 1, n);
+        } else {
+            v = e->unpack(res, e);
+        }
+        if (v == NULL)
+            goto fail;
+        PyTuple_SET_ITEM(result, i++, v);
+    }
+
+    return result;
 fail:
-	Py_DECREF(result);
-	return NULL;
+    Py_DECREF(result);
+    return NULL;
 }
 
 
@@ -1384,24 +1384,24 @@ strings.");
 static PyObject *
 s_unpack(PyObject *self, PyObject *input)
 {
-	Py_buffer vbuf;
-	PyObject *result;
-	PyStructObject *soself = (PyStructObject *)self;
-
-	assert(PyStruct_Check(self));
-	assert(soself->s_codes != NULL);
-	if (PyObject_GetBuffer(input, &vbuf, PyBUF_SIMPLE) < 0)
-		return NULL;
-	if (vbuf.len != soself->s_size) {
-		PyErr_Format(StructError,
-			     "unpack requires a bytes argument of length %zd",
-			     soself->s_size);
-                PyBuffer_Release(&vbuf);
-		return NULL;
-	}
-	result = s_unpack_internal(soself, vbuf.buf);
-	PyBuffer_Release(&vbuf);
-	return result;
+    Py_buffer vbuf;
+    PyObject *result;
+    PyStructObject *soself = (PyStructObject *)self;
+
+    assert(PyStruct_Check(self));
+    assert(soself->s_codes != NULL);
+    if (PyObject_GetBuffer(input, &vbuf, PyBUF_SIMPLE) < 0)
+        return NULL;
+    if (vbuf.len != soself->s_size) {
+        PyErr_Format(StructError,
+                     "unpack requires a bytes argument of length %zd",
+                     soself->s_size);
+        PyBuffer_Release(&vbuf);
+        return NULL;
+    }
+    result = s_unpack_internal(soself, vbuf.buf);
+    PyBuffer_Release(&vbuf);
+    return result;
 }
 
 PyDoc_STRVAR(s_unpack_from__doc__,
@@ -1415,35 +1415,35 @@ See struct.__doc__ for more on format strings.");
 static PyObject *
 s_unpack_from(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	static char *kwlist[] = {"buffer", "offset", 0};
-
-	PyObject *input;
-	Py_ssize_t offset = 0;
-	Py_buffer vbuf;
-	PyObject *result;
-	PyStructObject *soself = (PyStructObject *)self;
-
-	assert(PyStruct_Check(self));
-	assert(soself->s_codes != NULL);
-
-	if (!PyArg_ParseTupleAndKeywords(args, kwds,
-					 "O|n:unpack_from", kwlist,
-					 &input, &offset))
-		return NULL;
-	if (PyObject_GetBuffer(input, &vbuf, PyBUF_SIMPLE) < 0)
-		return NULL;
-	if (offset < 0)
-		offset += vbuf.len;
-	if (offset < 0 || vbuf.len - offset < soself->s_size) {
-		PyErr_Format(StructError,
-			"unpack_from requires a buffer of at least %zd bytes",
-			soself->s_size);
-                PyBuffer_Release(&vbuf);
-		return NULL;
-	}
-	result = s_unpack_internal(soself, (char*)vbuf.buf + offset);
-	PyBuffer_Release(&vbuf);
-	return result;
+    static char *kwlist[] = {"buffer", "offset", 0};
+
+    PyObject *input;
+    Py_ssize_t offset = 0;
+    Py_buffer vbuf;
+    PyObject *result;
+    PyStructObject *soself = (PyStructObject *)self;
+
+    assert(PyStruct_Check(self));
+    assert(soself->s_codes != NULL);
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "O|n:unpack_from", kwlist,
+                                     &input, &offset))
+        return NULL;
+    if (PyObject_GetBuffer(input, &vbuf, PyBUF_SIMPLE) < 0)
+        return NULL;
+    if (offset < 0)
+        offset += vbuf.len;
+    if (offset < 0 || vbuf.len - offset < soself->s_size) {
+        PyErr_Format(StructError,
+            "unpack_from requires a buffer of at least %zd bytes",
+            soself->s_size);
+        PyBuffer_Release(&vbuf);
+        return NULL;
+    }
+    result = s_unpack_internal(soself, (char*)vbuf.buf + offset);
+    PyBuffer_Release(&vbuf);
+    return result;
 }
 
 
@@ -1460,85 +1460,85 @@ s_unpack_from(PyObject *self, PyObject *args, PyObject *kwds)
 static int
 s_pack_internal(PyStructObject *soself, PyObject *args, int offset, char* buf)
 {
-	formatcode *code;
-	/* XXX(nnorwitz): why does i need to be a local?  can we use
-	   the offset parameter or do we need the wider width? */
-	Py_ssize_t i;
-
-	memset(buf, '\0', soself->s_size);
-	i = offset;
-	for (code = soself->s_codes; code->fmtdef != NULL; code++) {
-		Py_ssize_t n;
-		PyObject *v = PyTuple_GET_ITEM(args, i++);
-		const formatdef *e = code->fmtdef;
-		char *res = buf + code->offset;
-		if (e->format == 's') {
-			int isstring;
-			void *p;
-			if (PyUnicode_Check(v)) {
-				v = _PyUnicode_AsDefaultEncodedString(v, NULL);
-				if (v == NULL)
-					return -1;
-			}
-			isstring = PyBytes_Check(v);
-			if (!isstring && !PyByteArray_Check(v)) {
-				PyErr_SetString(StructError,
-						"argument for 's' must be a bytes or string");
-				return -1;
-			}
-			if (isstring) {
-				n = PyBytes_GET_SIZE(v);
-				p = PyBytes_AS_STRING(v);
-			}
-			else {
-				n = PyByteArray_GET_SIZE(v);
-				p = PyByteArray_AS_STRING(v);
-			}
-			if (n > code->size)
-				n = code->size;
-			if (n > 0)
-				memcpy(res, p, n);
-		} else if (e->format == 'p') {
-			int isstring;
-			void *p;
-			if (PyUnicode_Check(v)) {
-				v = _PyUnicode_AsDefaultEncodedString(v, NULL);
-				if (v == NULL)
-					return -1;
-			}
-			isstring = PyBytes_Check(v);
-			if (!isstring && !PyByteArray_Check(v)) {
-				PyErr_SetString(StructError,
-						"argument for 'p' must be a bytes or string");
-				return -1;
-			}
-			if (isstring) {
-				n = PyBytes_GET_SIZE(v);
-				p = PyBytes_AS_STRING(v);
-			}
-			else {
-				n = PyByteArray_GET_SIZE(v);
-				p = PyByteArray_AS_STRING(v);
-			}
-			if (n > (code->size - 1))
-				n = code->size - 1;
-			if (n > 0)
-				memcpy(res + 1, p, n);
-			if (n > 255)
-				n = 255;
-			*res = Py_SAFE_DOWNCAST(n, Py_ssize_t, unsigned char);
-		} else {
-			if (e->pack(res, v, e) < 0) {
-				if (PyLong_Check(v) && PyErr_ExceptionMatches(PyExc_OverflowError))
-					PyErr_SetString(StructError,
-							"long too large to convert to int");
-				return -1;
-			}
-		}
-	}
-
-	/* Success */
-	return 0;
+    formatcode *code;
+    /* XXX(nnorwitz): why does i need to be a local?  can we use
+       the offset parameter or do we need the wider width? */
+    Py_ssize_t i;
+
+    memset(buf, '\0', soself->s_size);
+    i = offset;
+    for (code = soself->s_codes; code->fmtdef != NULL; code++) {
+        Py_ssize_t n;
+        PyObject *v = PyTuple_GET_ITEM(args, i++);
+        const formatdef *e = code->fmtdef;
+        char *res = buf + code->offset;
+        if (e->format == 's') {
+            int isstring;
+            void *p;
+            if (PyUnicode_Check(v)) {
+                v = _PyUnicode_AsDefaultEncodedString(v, NULL);
+                if (v == NULL)
+                    return -1;
+            }
+            isstring = PyBytes_Check(v);
+            if (!isstring && !PyByteArray_Check(v)) {
+                PyErr_SetString(StructError,
+                                "argument for 's' must be a bytes or string");
+                return -1;
+            }
+            if (isstring) {
+                n = PyBytes_GET_SIZE(v);
+                p = PyBytes_AS_STRING(v);
+            }
+            else {
+                n = PyByteArray_GET_SIZE(v);
+                p = PyByteArray_AS_STRING(v);
+            }
+            if (n > code->size)
+                n = code->size;
+            if (n > 0)
+                memcpy(res, p, n);
+        } else if (e->format == 'p') {
+            int isstring;
+            void *p;
+            if (PyUnicode_Check(v)) {
+                v = _PyUnicode_AsDefaultEncodedString(v, NULL);
+                if (v == NULL)
+                    return -1;
+            }
+            isstring = PyBytes_Check(v);
+            if (!isstring && !PyByteArray_Check(v)) {
+                PyErr_SetString(StructError,
+                                "argument for 'p' must be a bytes or string");
+                return -1;
+            }
+            if (isstring) {
+                n = PyBytes_GET_SIZE(v);
+                p = PyBytes_AS_STRING(v);
+            }
+            else {
+                n = PyByteArray_GET_SIZE(v);
+                p = PyByteArray_AS_STRING(v);
+            }
+            if (n > (code->size - 1))
+                n = code->size - 1;
+            if (n > 0)
+                memcpy(res + 1, p, n);
+            if (n > 255)
+                n = 255;
+            *res = Py_SAFE_DOWNCAST(n, Py_ssize_t, unsigned char);
+        } else {
+            if (e->pack(res, v, e) < 0) {
+                if (PyLong_Check(v) && PyErr_ExceptionMatches(PyExc_OverflowError))
+                    PyErr_SetString(StructError,
+                                    "long too large to convert to int");
+                return -1;
+            }
+        }
+    }
+
+    /* Success */
+    return 0;
 }
 
 
@@ -1551,32 +1551,32 @@ Struct's format. See struct.__doc__ for more on format strings.");
 static PyObject *
 s_pack(PyObject *self, PyObject *args)
 {
-	PyStructObject *soself;
-	PyObject *result;
+    PyStructObject *soself;
+    PyObject *result;
 
-	/* Validate arguments. */
-	soself = (PyStructObject *)self;
-	assert(PyStruct_Check(self));
-	assert(soself->s_codes != NULL);
-	if (PyTuple_GET_SIZE(args) != soself->s_len)
-	{
-		PyErr_Format(StructError,
-			"pack requires exactly %zd arguments", soself->s_len);
-		return NULL;
-	}
+    /* Validate arguments. */
+    soself = (PyStructObject *)self;
+    assert(PyStruct_Check(self));
+    assert(soself->s_codes != NULL);
+    if (PyTuple_GET_SIZE(args) != soself->s_len)
+    {
+        PyErr_Format(StructError,
+            "pack requires exactly %zd arguments", soself->s_len);
+        return NULL;
+    }
 
-	/* Allocate a new string */
-	result = PyBytes_FromStringAndSize((char *)NULL, soself->s_size);
-	if (result == NULL)
-		return NULL;
+    /* Allocate a new string */
+    result = PyBytes_FromStringAndSize((char *)NULL, soself->s_size);
+    if (result == NULL)
+        return NULL;
 
-	/* Call the guts */
-	if ( s_pack_internal(soself, args, 0, PyBytes_AS_STRING(result)) != 0 ) {
-		Py_DECREF(result);
-		return NULL;
-	}
+    /* Call the guts */
+    if ( s_pack_internal(soself, args, 0, PyBytes_AS_STRING(result)) != 0 ) {
+        Py_DECREF(result);
+        return NULL;
+    }
 
-	return result;
+    return result;
 }
 
 PyDoc_STRVAR(s_pack_into__doc__,
@@ -1590,59 +1590,59 @@ more on format strings.");
 static PyObject *
 s_pack_into(PyObject *self, PyObject *args)
 {
-	PyStructObject *soself;
-	char *buffer;
-	Py_ssize_t buffer_len, offset;
-
-	/* Validate arguments.  +1 is for the first arg as buffer. */
-	soself = (PyStructObject *)self;
-	assert(PyStruct_Check(self));
-	assert(soself->s_codes != NULL);
-	if (PyTuple_GET_SIZE(args) != (soself->s_len + 2))
-	{
-		PyErr_Format(StructError,
-			     "pack_into requires exactly %zd arguments",
-			     (soself->s_len + 2));
-		return NULL;
-	}
-
-	/* Extract a writable memory buffer from the first argument */
-	if ( PyObject_AsWriteBuffer(PyTuple_GET_ITEM(args, 0),
-								(void**)&buffer, &buffer_len) == -1 ) {
-		return NULL;
-	}
-	assert( buffer_len >= 0 );
-
-	/* Extract the offset from the first argument */
-	offset = PyNumber_AsSsize_t(PyTuple_GET_ITEM(args, 1), PyExc_IndexError);
-	if (offset == -1 && PyErr_Occurred())
-		return NULL;
-
-	/* Support negative offsets. */
-	if (offset < 0)
-		offset += buffer_len;
-
-	/* Check boundaries */
-	if (offset < 0 || (buffer_len - offset) < soself->s_size) {
-		PyErr_Format(StructError,
-			     "pack_into requires a buffer of at least %zd bytes",
-			     soself->s_size);
-		return NULL;
-	}
-
-	/* Call the guts */
-	if ( s_pack_internal(soself, args, 2, buffer + offset) != 0 ) {
-		return NULL;
-	}
-
-	Py_RETURN_NONE;
+    PyStructObject *soself;
+    char *buffer;
+    Py_ssize_t buffer_len, offset;
+
+    /* Validate arguments.  +1 is for the first arg as buffer. */
+    soself = (PyStructObject *)self;
+    assert(PyStruct_Check(self));
+    assert(soself->s_codes != NULL);
+    if (PyTuple_GET_SIZE(args) != (soself->s_len + 2))
+    {
+        PyErr_Format(StructError,
+                     "pack_into requires exactly %zd arguments",
+                     (soself->s_len + 2));
+        return NULL;
+    }
+
+    /* Extract a writable memory buffer from the first argument */
+    if ( PyObject_AsWriteBuffer(PyTuple_GET_ITEM(args, 0),
+                                                            (void**)&buffer, &buffer_len) == -1 ) {
+        return NULL;
+    }
+    assert( buffer_len >= 0 );
+
+    /* Extract the offset from the first argument */
+    offset = PyNumber_AsSsize_t(PyTuple_GET_ITEM(args, 1), PyExc_IndexError);
+    if (offset == -1 && PyErr_Occurred())
+        return NULL;
+
+    /* Support negative offsets. */
+    if (offset < 0)
+        offset += buffer_len;
+
+    /* Check boundaries */
+    if (offset < 0 || (buffer_len - offset) < soself->s_size) {
+        PyErr_Format(StructError,
+                     "pack_into requires a buffer of at least %zd bytes",
+                     soself->s_size);
+        return NULL;
+    }
+
+    /* Call the guts */
+    if ( s_pack_internal(soself, args, 2, buffer + offset) != 0 ) {
+        return NULL;
+    }
+
+    Py_RETURN_NONE;
 }
 
 static PyObject *
 s_get_format(PyStructObject *self, void *unused)
 {
-	Py_INCREF(self->s_format);
-	return self->s_format;
+    Py_INCREF(self->s_format);
+    return self->s_format;
 }
 
 static PyObject *
@@ -1654,12 +1654,12 @@ s_get_size(PyStructObject *self, void *unused)
 /* List of functions */
 
 static struct PyMethodDef s_methods[] = {
-	{"pack",	s_pack,		METH_VARARGS, s_pack__doc__},
-	{"pack_into",	s_pack_into,	METH_VARARGS, s_pack_into__doc__},
-	{"unpack",	s_unpack,       METH_O, s_unpack__doc__},
-	{"unpack_from",	(PyCFunction)s_unpack_from, METH_VARARGS|METH_KEYWORDS,
-			s_unpack_from__doc__},
-	{NULL,	 NULL}		/* sentinel */
+    {"pack",            s_pack,         METH_VARARGS, s_pack__doc__},
+    {"pack_into",       s_pack_into,    METH_VARARGS, s_pack_into__doc__},
+    {"unpack",          s_unpack,       METH_O, s_unpack__doc__},
+    {"unpack_from",     (PyCFunction)s_unpack_from, METH_VARARGS|METH_KEYWORDS,
+                    s_unpack_from__doc__},
+    {NULL,       NULL}          /* sentinel */
 };
 
 PyDoc_STRVAR(s__doc__, "Compiled struct object");
@@ -1667,52 +1667,52 @@ PyDoc_STRVAR(s__doc__, "Compiled struct object");
 #define OFF(x) offsetof(PyStructObject, x)
 
 static PyGetSetDef s_getsetlist[] = {
-	{"format", (getter)s_get_format, (setter)NULL, "struct format string", NULL},
-	{"size", (getter)s_get_size, (setter)NULL, "struct size in bytes", NULL},
-	{NULL} /* sentinel */
+    {"format", (getter)s_get_format, (setter)NULL, "struct format string", NULL},
+    {"size", (getter)s_get_size, (setter)NULL, "struct size in bytes", NULL},
+    {NULL} /* sentinel */
 };
 
 static
 PyTypeObject PyStructType = {
-	PyVarObject_HEAD_INIT(NULL, 0)
-	"Struct",
-	sizeof(PyStructObject),
-	0,
-	(destructor)s_dealloc,	/* tp_dealloc */
-	0,					/* tp_print */
-	0,					/* tp_getattr */
-	0,					/* tp_setattr */
-	0,					/* tp_reserved */
-	0,					/* tp_repr */
-	0,					/* tp_as_number */
-	0,					/* tp_as_sequence */
-	0,					/* tp_as_mapping */
-	0,					/* tp_hash */
-	0,					/* tp_call */
-	0,					/* tp_str */
-	PyObject_GenericGetAttr,	/* tp_getattro */
-	PyObject_GenericSetAttr,	/* tp_setattro */
-	0,					/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
-	s__doc__,			/* tp_doc */
-	0,					/* tp_traverse */
-	0,					/* tp_clear */
-	0,					/* tp_richcompare */
-	offsetof(PyStructObject, weakreflist),	/* tp_weaklistoffset */
-	0,					/* tp_iter */
-	0,					/* tp_iternext */
-	s_methods,			/* tp_methods */
-	NULL,				/* tp_members */
-	s_getsetlist,		/* tp_getset */
-	0,					/* tp_base */
-	0,					/* tp_dict */
-	0,					/* tp_descr_get */
-	0,					/* tp_descr_set */
-	0,					/* tp_dictoffset */
-	s_init,				/* tp_init */
-	PyType_GenericAlloc,/* tp_alloc */
-	s_new,				/* tp_new */
-	PyObject_Del,		/* tp_free */
+    PyVarObject_HEAD_INIT(NULL, 0)
+    "Struct",
+    sizeof(PyStructObject),
+    0,
+    (destructor)s_dealloc,      /* tp_dealloc */
+    0,                                          /* tp_print */
+    0,                                          /* tp_getattr */
+    0,                                          /* tp_setattr */
+    0,                                          /* tp_reserved */
+    0,                                          /* tp_repr */
+    0,                                          /* tp_as_number */
+    0,                                          /* tp_as_sequence */
+    0,                                          /* tp_as_mapping */
+    0,                                          /* tp_hash */
+    0,                                          /* tp_call */
+    0,                                          /* tp_str */
+    PyObject_GenericGetAttr,            /* tp_getattro */
+    PyObject_GenericSetAttr,            /* tp_setattro */
+    0,                                          /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
+    s__doc__,                           /* tp_doc */
+    0,                                          /* tp_traverse */
+    0,                                          /* tp_clear */
+    0,                                          /* tp_richcompare */
+    offsetof(PyStructObject, weakreflist),      /* tp_weaklistoffset */
+    0,                                          /* tp_iter */
+    0,                                          /* tp_iternext */
+    s_methods,                          /* tp_methods */
+    NULL,                               /* tp_members */
+    s_getsetlist,               /* tp_getset */
+    0,                                          /* tp_base */
+    0,                                          /* tp_dict */
+    0,                                          /* tp_descr_get */
+    0,                                          /* tp_descr_set */
+    0,                                          /* tp_dictoffset */
+    s_init,                             /* tp_init */
+    PyType_GenericAlloc,/* tp_alloc */
+    s_new,                              /* tp_new */
+    PyObject_Del,               /* tp_free */
 };
 
 
@@ -1724,29 +1724,29 @@ static PyObject *cache = NULL;
 static PyObject *
 cache_struct(PyObject *fmt)
 {
-	PyObject * s_object;
+    PyObject * s_object;
 
-	if (cache == NULL) {
-		cache = PyDict_New();
-		if (cache == NULL)
-			return NULL;
-	}
+    if (cache == NULL) {
+        cache = PyDict_New();
+        if (cache == NULL)
+            return NULL;
+    }
 
-	s_object = PyDict_GetItem(cache, fmt);
-	if (s_object != NULL) {
-		Py_INCREF(s_object);
-		return s_object;
-	}
+    s_object = PyDict_GetItem(cache, fmt);
+    if (s_object != NULL) {
+        Py_INCREF(s_object);
+        return s_object;
+    }
 
-	s_object = PyObject_CallFunctionObjArgs((PyObject *)(&PyStructType), fmt, NULL);
-	if (s_object != NULL) {
-		if (PyDict_Size(cache) >= MAXCACHE)
-			PyDict_Clear(cache);
-		/* Attempt to cache the result */
-		if (PyDict_SetItem(cache, fmt, s_object) == -1)
-			PyErr_Clear();
-	}
-	return s_object;
+    s_object = PyObject_CallFunctionObjArgs((PyObject *)(&PyStructType), fmt, NULL);
+    if (s_object != NULL) {
+        if (PyDict_Size(cache) >= MAXCACHE)
+            PyDict_Clear(cache);
+        /* Attempt to cache the result */
+        if (PyDict_SetItem(cache, fmt, s_object) == -1)
+            PyErr_Clear();
+    }
+    return s_object;
 }
 
 PyDoc_STRVAR(clearcache_doc,
@@ -1755,8 +1755,8 @@ PyDoc_STRVAR(clearcache_doc,
 static PyObject *
 clearcache(PyObject *self)
 {
-	Py_CLEAR(cache);
-	Py_RETURN_NONE;
+    Py_CLEAR(cache);
+    Py_RETURN_NONE;
 }
 
 PyDoc_STRVAR(calcsize_doc,
@@ -1765,13 +1765,13 @@ PyDoc_STRVAR(calcsize_doc,
 static PyObject *
 calcsize(PyObject *self, PyObject *fmt)
 {
-	Py_ssize_t n;
-	PyObject *s_object = cache_struct(fmt);
-	if (s_object == NULL)
-		return NULL;
-	n = ((PyStructObject *)s_object)->s_size;
-	Py_DECREF(s_object);
-    	return PyLong_FromSsize_t(n);
+    Py_ssize_t n;
+    PyObject *s_object = cache_struct(fmt);
+    if (s_object == NULL)
+        return NULL;
+    n = ((PyStructObject *)s_object)->s_size;
+    Py_DECREF(s_object);
+    return PyLong_FromSsize_t(n);
 }
 
 PyDoc_STRVAR(pack_doc,
@@ -1780,27 +1780,27 @@ PyDoc_STRVAR(pack_doc,
 static PyObject *
 pack(PyObject *self, PyObject *args)
 {
-	PyObject *s_object, *fmt, *newargs, *result;
-	Py_ssize_t n = PyTuple_GET_SIZE(args);
-
-	if (n == 0) {
-		PyErr_SetString(PyExc_TypeError, "missing format argument");
-		return NULL;
-	}
-	fmt = PyTuple_GET_ITEM(args, 0);
-	newargs = PyTuple_GetSlice(args, 1, n);
-	if (newargs == NULL)
-		return NULL;
-
-	s_object = cache_struct(fmt);
-	if (s_object == NULL) {
-		Py_DECREF(newargs);
-		return NULL;
-	}
-    	result = s_pack(s_object, newargs);
-	Py_DECREF(newargs);
-	Py_DECREF(s_object);
-	return result;
+    PyObject *s_object, *fmt, *newargs, *result;
+    Py_ssize_t n = PyTuple_GET_SIZE(args);
+
+    if (n == 0) {
+        PyErr_SetString(PyExc_TypeError, "missing format argument");
+        return NULL;
+    }
+    fmt = PyTuple_GET_ITEM(args, 0);
+    newargs = PyTuple_GetSlice(args, 1, n);
+    if (newargs == NULL)
+        return NULL;
+
+    s_object = cache_struct(fmt);
+    if (s_object == NULL) {
+        Py_DECREF(newargs);
+        return NULL;
+    }
+    result = s_pack(s_object, newargs);
+    Py_DECREF(newargs);
+    Py_DECREF(s_object);
+    return result;
 }
 
 PyDoc_STRVAR(pack_into_doc,
@@ -1810,27 +1810,27 @@ Write the packed bytes into the writable buffer buf starting at offset.");
 static PyObject *
 pack_into(PyObject *self, PyObject *args)
 {
-	PyObject *s_object, *fmt, *newargs, *result;
-	Py_ssize_t n = PyTuple_GET_SIZE(args);
-
-	if (n == 0) {
-		PyErr_SetString(PyExc_TypeError, "missing format argument");
-		return NULL;
-	}
-	fmt = PyTuple_GET_ITEM(args, 0);
-	newargs = PyTuple_GetSlice(args, 1, n);
-	if (newargs == NULL)
-		return NULL;
-
-	s_object = cache_struct(fmt);
-	if (s_object == NULL) {
-		Py_DECREF(newargs);
-		return NULL;
-	}
-    	result = s_pack_into(s_object, newargs);
-	Py_DECREF(newargs);
-	Py_DECREF(s_object);
-	return result;
+    PyObject *s_object, *fmt, *newargs, *result;
+    Py_ssize_t n = PyTuple_GET_SIZE(args);
+
+    if (n == 0) {
+        PyErr_SetString(PyExc_TypeError, "missing format argument");
+        return NULL;
+    }
+    fmt = PyTuple_GET_ITEM(args, 0);
+    newargs = PyTuple_GetSlice(args, 1, n);
+    if (newargs == NULL)
+        return NULL;
+
+    s_object = cache_struct(fmt);
+    if (s_object == NULL) {
+        Py_DECREF(newargs);
+        return NULL;
+    }
+    result = s_pack_into(s_object, newargs);
+    Py_DECREF(newargs);
+    Py_DECREF(s_object);
+    return result;
 }
 
 PyDoc_STRVAR(unpack_doc,
@@ -1840,17 +1840,17 @@ Requires len(bytes) == calcsize(fmt).");
 static PyObject *
 unpack(PyObject *self, PyObject *args)
 {
-	PyObject *s_object, *fmt, *inputstr, *result;
+    PyObject *s_object, *fmt, *inputstr, *result;
 
-	if (!PyArg_UnpackTuple(args, "unpack", 2, 2, &fmt, &inputstr))
-		return NULL;
+    if (!PyArg_UnpackTuple(args, "unpack", 2, 2, &fmt, &inputstr))
+        return NULL;
 
-	s_object = cache_struct(fmt);
-	if (s_object == NULL)
-		return NULL;
-    	result = s_unpack(s_object, inputstr);
-	Py_DECREF(s_object);
-	return result;
+    s_object = cache_struct(fmt);
+    if (s_object == NULL)
+        return NULL;
+    result = s_unpack(s_object, inputstr);
+    Py_DECREF(s_object);
+    return result;
 }
 
 PyDoc_STRVAR(unpack_from_doc,
@@ -1860,38 +1860,38 @@ fmt, starting at offset. Requires len(buffer[offset:]) >= calcsize(fmt).");
 static PyObject *
 unpack_from(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	PyObject *s_object, *fmt, *newargs, *result;
-	Py_ssize_t n = PyTuple_GET_SIZE(args);
-
-	if (n == 0) {
-		PyErr_SetString(PyExc_TypeError, "missing format argument");
-		return NULL;
-	}
-	fmt = PyTuple_GET_ITEM(args, 0);
-	newargs = PyTuple_GetSlice(args, 1, n);
-	if (newargs == NULL)
-		return NULL;
-
-	s_object = cache_struct(fmt);
-	if (s_object == NULL) {
-		Py_DECREF(newargs);
-		return NULL;
-	}
-    	result = s_unpack_from(s_object, newargs, kwds);
-	Py_DECREF(newargs);
-	Py_DECREF(s_object);
-	return result;
+    PyObject *s_object, *fmt, *newargs, *result;
+    Py_ssize_t n = PyTuple_GET_SIZE(args);
+
+    if (n == 0) {
+        PyErr_SetString(PyExc_TypeError, "missing format argument");
+        return NULL;
+    }
+    fmt = PyTuple_GET_ITEM(args, 0);
+    newargs = PyTuple_GetSlice(args, 1, n);
+    if (newargs == NULL)
+        return NULL;
+
+    s_object = cache_struct(fmt);
+    if (s_object == NULL) {
+        Py_DECREF(newargs);
+        return NULL;
+    }
+    result = s_unpack_from(s_object, newargs, kwds);
+    Py_DECREF(newargs);
+    Py_DECREF(s_object);
+    return result;
 }
 
 static struct PyMethodDef module_functions[] = {
-	{"_clearcache",	(PyCFunction)clearcache,	METH_NOARGS, 	clearcache_doc},
-	{"calcsize",	calcsize,	METH_O, 	calcsize_doc},
-	{"pack",	pack,		METH_VARARGS, 	pack_doc},
-	{"pack_into",	pack_into,	METH_VARARGS, 	pack_into_doc},
-	{"unpack",	unpack,       	METH_VARARGS, 	unpack_doc},
-	{"unpack_from",	(PyCFunction)unpack_from, 	
-			METH_VARARGS|METH_KEYWORDS, 	unpack_from_doc},
-	{NULL,	 NULL}		/* sentinel */
+    {"_clearcache",     (PyCFunction)clearcache,        METH_NOARGS,    clearcache_doc},
+    {"calcsize",        calcsize,       METH_O,         calcsize_doc},
+    {"pack",            pack,           METH_VARARGS,   pack_doc},
+    {"pack_into",       pack_into,      METH_VARARGS,   pack_into_doc},
+    {"unpack",          unpack,         METH_VARARGS,   unpack_doc},
+    {"unpack_from",     (PyCFunction)unpack_from,
+                    METH_VARARGS|METH_KEYWORDS,         unpack_from_doc},
+    {NULL,       NULL}          /* sentinel */
 };
 
 
@@ -1928,87 +1928,87 @@ The variable struct.error is an exception raised on errors.\n");
 
 
 static struct PyModuleDef _structmodule = {
-	PyModuleDef_HEAD_INIT,
-	"_struct",
-	module_doc,
-	-1,
-	module_functions,
-	NULL,
-	NULL,
-	NULL,
-	NULL
+    PyModuleDef_HEAD_INIT,
+    "_struct",
+    module_doc,
+    -1,
+    module_functions,
+    NULL,
+    NULL,
+    NULL,
+    NULL
 };
 
 PyMODINIT_FUNC
 PyInit__struct(void)
 {
-	PyObject *ver, *m;
-
-	ver = PyBytes_FromString("0.3");
-	if (ver == NULL)
-		return NULL;
-
-	m = PyModule_Create(&_structmodule);
-	if (m == NULL)
-		return NULL;
-
-	Py_TYPE(&PyStructType) = &PyType_Type;
-	if (PyType_Ready(&PyStructType) < 0)
-		return NULL;
-
-	/* Check endian and swap in faster functions */
-	{
-		int one = 1;
-		formatdef *native = native_table;
-		formatdef *other, *ptr;
-		if ((int)*(unsigned char*)&one)
-			other = lilendian_table;
-		else
-			other = bigendian_table;
-		/* Scan through the native table, find a matching
-		   entry in the endian table and swap in the
-		   native implementations whenever possible
-		   (64-bit platforms may not have "standard" sizes) */
-		while (native->format != '\0' && other->format != '\0') {
-			ptr = other;
-			while (ptr->format != '\0') {
-				if (ptr->format == native->format) {
-					/* Match faster when formats are
-					   listed in the same order */
-					if (ptr == other)
-						other++;
-					/* Only use the trick if the
-					   size matches */
-					if (ptr->size != native->size)
-						break;
-					/* Skip float and double, could be
-					   "unknown" float format */
-					if (ptr->format == 'd' || ptr->format == 'f')
-						break;
-					ptr->pack = native->pack;
-					ptr->unpack = native->unpack;
-					break;
-				}
-				ptr++;
-			}
-			native++;
-		}
-	}
-
-	/* Add some symbolic constants to the module */
-	if (StructError == NULL) {
-		StructError = PyErr_NewException("struct.error", NULL, NULL);
-		if (StructError == NULL)
-			return NULL;
-	}
-
-	Py_INCREF(StructError);
-	PyModule_AddObject(m, "error", StructError);
-
-	Py_INCREF((PyObject*)&PyStructType);
-	PyModule_AddObject(m, "Struct", (PyObject*)&PyStructType);
-
-	PyModule_AddObject(m, "__version__", ver);
-
-	return m;
+    PyObject *ver, *m;
+
+    ver = PyBytes_FromString("0.3");
+    if (ver == NULL)
+        return NULL;
+
+    m = PyModule_Create(&_structmodule);
+    if (m == NULL)
+        return NULL;
+
+    Py_TYPE(&PyStructType) = &PyType_Type;
+    if (PyType_Ready(&PyStructType) < 0)
+        return NULL;
+
+    /* Check endian and swap in faster functions */
+    {
+        int one = 1;
+        formatdef *native = native_table;
+        formatdef *other, *ptr;
+        if ((int)*(unsigned char*)&one)
+            other = lilendian_table;
+        else
+            other = bigendian_table;
+        /* Scan through the native table, find a matching
+           entry in the endian table and swap in the
+           native implementations whenever possible
+           (64-bit platforms may not have "standard" sizes) */
+        while (native->format != '\0' && other->format != '\0') {
+            ptr = other;
+            while (ptr->format != '\0') {
+                if (ptr->format == native->format) {
+                    /* Match faster when formats are
+                       listed in the same order */
+                    if (ptr == other)
+                        other++;
+                    /* Only use the trick if the
+                       size matches */
+                    if (ptr->size != native->size)
+                        break;
+                    /* Skip float and double, could be
+                       "unknown" float format */
+                    if (ptr->format == 'd' || ptr->format == 'f')
+                        break;
+                    ptr->pack = native->pack;
+                    ptr->unpack = native->unpack;
+                    break;
+                }
+                ptr++;
+            }
+            native++;
+        }
+    }
+
+    /* Add some symbolic constants to the module */
+    if (StructError == NULL) {
+        StructError = PyErr_NewException("struct.error", NULL, NULL);
+        if (StructError == NULL)
+            return NULL;
+    }
+
+    Py_INCREF(StructError);
+    PyModule_AddObject(m, "error", StructError);
+
+    Py_INCREF((PyObject*)&PyStructType);
+    PyModule_AddObject(m, "Struct", (PyObject*)&PyStructType);
+
+    PyModule_AddObject(m, "__version__", ver);
+
+    return m;
 }