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/* Bytes (String) object interface */

#ifndef Py_BYTESOBJECT_H

#define Py_BYTESOBJECT_H

#ifdef __cplusplus

extern "C" {

#endif

#include <stdarg.h>

Type PyBytesObject represents a character string. An extra zero byte is

reserved at the end to ensure it is zero-terminated, but a size is

present so strings with null bytes in them can be represented. This

is an immutable object type.

There are functions to create new string objects, to test

an object for string-ness, and to get the

string value. The latter function returns a null pointer

if the object is not of the proper type.

There is a variant that takes an explicit size as well as a

variant that assumes a zero-terminated string. Note that none of the

functions should be applied to nil objects.

/* Caching the hash (ob_shash) saves recalculation of a string's hash value.

This significantly speeds up dict lookups. */

#ifndef Py_LIMITED_API

typedef struct {

PyObject_VAR_HEAD

Py_hash_t ob_shash;

char ob_sval[1];

/* Invariants:

* ob_sval contains space for 'ob_size+1' elements.

* ob_sval[ob_size] == 0.

* ob_shash is the hash of the string or -1 if not computed yet.

} PyBytesObject;

#endif

PyAPI_DATA(PyTypeObject) PyBytes_Type;

PyAPI_DATA(PyTypeObject) PyBytesIter_Type;

#define PyBytes_Check(op) \

PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_BYTES_SUBCLASS)

#define PyBytes_CheckExact(op) (Py_TYPE(op) == &PyBytes_Type)

PyAPI_FUNC(PyObject *) PyBytes_FromStringAndSize(const char *, Py_ssize_t);

PyAPI_FUNC(PyObject *) PyBytes_FromString(const char *);

PyAPI_FUNC(PyObject *) PyBytes_FromObject(PyObject *);

PyAPI_FUNC(PyObject *) PyBytes_FromFormatV(const char*, va_list)

Py_GCC_ATTRIBUTE((format(printf, 1, 0)));

PyAPI_FUNC(PyObject *) PyBytes_FromFormat(const char*, ...)

Py_GCC_ATTRIBUTE((format(printf, 1, 2)));

PyAPI_FUNC(Py_ssize_t) PyBytes_Size(PyObject *);

PyAPI_FUNC(char *) PyBytes_AsString(PyObject *);

PyAPI_FUNC(PyObject *) PyBytes_Repr(PyObject *, int);

PyAPI_FUNC(void) PyBytes_Concat(PyObject **, PyObject *);

PyAPI_FUNC(void) PyBytes_ConcatAndDel(PyObject **, PyObject *);

#ifndef Py_LIMITED_API

PyAPI_FUNC(int) _PyBytes_Resize(PyObject **, Py_ssize_t);

PyAPI_FUNC(PyObject *) _PyBytes_Format(PyObject *, PyObject *);

#endif

PyAPI_FUNC(PyObject *) PyBytes_DecodeEscape(const char *, Py_ssize_t,

const char *, Py_ssize_t,

const char *);

/* Macro, trading safety for speed */

#ifndef Py_LIMITED_API

#define PyBytes_AS_STRING(op) (assert(PyBytes_Check(op)), \

(((PyBytesObject *)(op))->ob_sval))

#define PyBytes_GET_SIZE(op) (assert(PyBytes_Check(op)),Py_SIZE(op))

#endif

/* _PyBytes_Join(sep, x) is like sep.join(x). sep must be PyBytesObject*,

x must be an iterable object. */

#ifndef Py_LIMITED_API

PyAPI_FUNC(PyObject *) _PyBytes_Join(PyObject *sep, PyObject *x);

#endif

/* Provides access to the internal data buffer and size of a string

object or the default encoded version of a Unicode object. Passing

NULL as *len parameter will force the string buffer to be

0-terminated (passing a string with embedded NULL characters will

cause an exception). */

PyAPI_FUNC(int) PyBytes_AsStringAndSize(

PyObject *obj, /* string or Unicode object */

char **s, /* pointer to buffer variable */

Py_ssize_t *len /* pointer to length variable or NULL

(only possible for 0-terminated

strings) */

);

/* Using the current locale, insert the thousands grouping

into the string pointed to by buffer. For the argument descriptions,

see Objects/stringlib/localeutil.h */

#ifndef Py_LIMITED_API

PyAPI_FUNC(Py_ssize_t) _PyBytes_InsertThousandsGroupingLocale(char *buffer,

Py_ssize_t n_buffer,

char *digits,

Py_ssize_t n_digits,

Py_ssize_t min_width);

/* Using explicit passed-in values, insert the thousands grouping

into the string pointed to by buffer. For the argument descriptions,

see Objects/stringlib/localeutil.h */

PyAPI_FUNC(Py_ssize_t) _PyBytes_InsertThousandsGrouping(char *buffer,

Py_ssize_t n_buffer,

char *digits,

Py_ssize_t n_digits,

Py_ssize_t min_width,

const char *grouping,

const char *thousands_sep);

#endif

/* Flags used by string formatting */

#define F_LJUST (1<<0)

#define F_SIGN (1<<1)

#define F_BLANK (1<<2)

#define F_ALT (1<<3)

#define F_ZERO (1<<4)

#ifdef __cplusplus

}

#endif

#endif /* !Py_BYTESOBJECT_H */

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