home *** CD-ROM | disk | FTP | other *** search
-
- /* String object interface */
-
- #ifndef Py_STRINGOBJECT_H
- #define Py_STRINGOBJECT_H
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #include <stdarg.h>
-
- /*
- Type PyStringObject 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.
- Interning strings (ob_sstate) tries to ensure that only one string
- object with a given value exists, so equality tests can be one pointer
- comparison. This is generally restricted to strings that "look like"
- Python identifiers, although the intern() builtin can be used to force
- interning of any string.
- Together, these sped the interpreter by up to 20%. */
-
- typedef struct {
- PyObject_VAR_HEAD
- long ob_shash;
- int ob_sstate;
- char ob_sval[1];
- } PyStringObject;
-
- #define SSTATE_NOT_INTERNED 0
- #define SSTATE_INTERNED_MORTAL 1
- #define SSTATE_INTERNED_IMMORTAL 2
-
- PyAPI_DATA(PyTypeObject) PyBaseString_Type;
- PyAPI_DATA(PyTypeObject) PyString_Type;
-
- #define PyString_Check(op) PyObject_TypeCheck(op, &PyString_Type)
- #define PyString_CheckExact(op) ((op)->ob_type == &PyString_Type)
-
- PyAPI_FUNC(PyObject *) PyString_FromStringAndSize(const char *, int);
- PyAPI_FUNC(PyObject *) PyString_FromString(const char *);
- PyAPI_FUNC(PyObject *) PyString_FromFormatV(const char*, va_list)
- Py_GCC_ATTRIBUTE((format(printf, 1, 0)));
- PyAPI_FUNC(PyObject *) PyString_FromFormat(const char*, ...)
- Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
- PyAPI_FUNC(int) PyString_Size(PyObject *);
- PyAPI_FUNC(char *) PyString_AsString(PyObject *);
- PyAPI_FUNC(PyObject *) PyString_Repr(PyObject *, int);
- PyAPI_FUNC(void) PyString_Concat(PyObject **, PyObject *);
- PyAPI_FUNC(void) PyString_ConcatAndDel(PyObject **, PyObject *);
- PyAPI_FUNC(int) _PyString_Resize(PyObject **, int);
- PyAPI_FUNC(int) _PyString_Eq(PyObject *, PyObject*);
- PyAPI_FUNC(PyObject *) PyString_Format(PyObject *, PyObject *);
- PyAPI_FUNC(PyObject *) _PyString_FormatLong(PyObject*, int, int,
- int, char**, int*);
- PyAPI_FUNC(PyObject *) PyString_DecodeEscape(const char *, int,
- const char *, int,
- const char *);
-
- PyAPI_FUNC(void) PyString_InternInPlace(PyObject **);
- PyAPI_FUNC(void) PyString_InternImmortal(PyObject **);
- PyAPI_FUNC(PyObject *) PyString_InternFromString(const char *);
- PyAPI_FUNC(void) _Py_ReleaseInternedStrings(void);
-
- /* Use only if you know it's a string */
- #define PyString_CHECK_INTERNED(op) (((PyStringObject *)(op))->ob_sstate)
-
- /* Macro, trading safety for speed */
- #define PyString_AS_STRING(op) (((PyStringObject *)(op))->ob_sval)
- #define PyString_GET_SIZE(op) (((PyStringObject *)(op))->ob_size)
-
- /* _PyString_Join(sep, x) is like sep.join(x). sep must be PyStringObject*,
- x must be an iterable object. */
- PyAPI_FUNC(PyObject *) _PyString_Join(PyObject *sep, PyObject *x);
-
- /* --- Generic Codecs ----------------------------------------------------- */
-
- /* Create an object by decoding the encoded string s of the
- given size. */
-
- PyAPI_FUNC(PyObject*) PyString_Decode(
- const char *s, /* encoded string */
- int size, /* size of buffer */
- const char *encoding, /* encoding */
- const char *errors /* error handling */
- );
-
- /* Encodes a char buffer of the given size and returns a
- Python object. */
-
- PyAPI_FUNC(PyObject*) PyString_Encode(
- const char *s, /* string char buffer */
- int size, /* number of chars to encode */
- const char *encoding, /* encoding */
- const char *errors /* error handling */
- );
-
- /* Encodes a string object and returns the result as Python
- object. */
-
- PyAPI_FUNC(PyObject*) PyString_AsEncodedObject(
- PyObject *str, /* string object */
- const char *encoding, /* encoding */
- const char *errors /* error handling */
- );
-
- /* Encodes a string object and returns the result as Python string
- object.
-
- If the codec returns an Unicode object, the object is converted
- back to a string using the default encoding.
-
- DEPRECATED - use PyString_AsEncodedObject() instead. */
-
- PyAPI_FUNC(PyObject*) PyString_AsEncodedString(
- PyObject *str, /* string object */
- const char *encoding, /* encoding */
- const char *errors /* error handling */
- );
-
- /* Decodes a string object and returns the result as Python
- object. */
-
- PyAPI_FUNC(PyObject*) PyString_AsDecodedObject(
- PyObject *str, /* string object */
- const char *encoding, /* encoding */
- const char *errors /* error handling */
- );
-
- /* Decodes a string object and returns the result as Python string
- object.
-
- If the codec returns an Unicode object, the object is converted
- back to a string using the default encoding.
-
- DEPRECATED - use PyString_AsDecodedObject() instead. */
-
- PyAPI_FUNC(PyObject*) PyString_AsDecodedString(
- PyObject *str, /* string object */
- const char *encoding, /* encoding */
- const char *errors /* error handling */
- );
-
- /* Provides access to the internal data buffer and size of a string
- object or the default encoded version of an 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) PyString_AsStringAndSize(
- register PyObject *obj, /* string or Unicode object */
- register char **s, /* pointer to buffer variable */
- register int *len /* pointer to length variable or NULL
- (only possible for 0-terminated
- strings) */
- );
-
-
- #ifdef __cplusplus
- }
- #endif
- #endif /* !Py_STRINGOBJECT_H */
-