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STLport-4.5.3
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c_locale.h
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2001-11-14
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/*
* Copyright (c) 1999
* Silicon Graphics Computer Systems, Inc.
*
* Copyright (c) 1999
* Boris Fomitchev
*
* This material is provided "as is", with absolutely no warranty expressed
* or implied. Any use is at your own risk.
*
* Permission to use or copy this software for any purpose is hereby granted
* without fee, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*
*/
/*
* It is impossible to write the C++ locale library in terms of locales
* as defined in the C standard. Instead, we write the C++ locale and I/O
* library in terms of a low level C-like interface. This file defines
* that interface.
*
* The low-level locale interface can't be written portably; there
* must be a version of it for each platform that the C++ library
* is ported to. On many systems this interface may be a thin wrapper
* for existing functionality.
*/
#ifndef _STLP_C_LOCALE_IMPL_H
# define _STLP_C_LOCALE_IMPL_H
# include <stl/c_locale.h>
// # include <wchar.h>
# include <stl/_cwchar.h>
#define _Locale_MAX_SIMPLE_NAME 256
/*
* A number: the maximum length of a simple locale name.
* (i.e. a name like like en_US, as opposed to a name like
* en_US/de_AT/de_AT/es_MX/en_US/en_US) */
#define _Locale_MAX_COMPOSITE_NAME 6*(_Locale_MAX_SIMPLE_NAME+3)
/*
* Maximum length of a composite locale.
*/
#ifdef __cplusplus
_STLP_BEGIN_NAMESPACE
extern "C" {
#endif
/*
* Typedefs:
*/
#if defined (__GNUC__) || defined (_KCC)
typedef unsigned short int _Locale_mask_t;
#else
typedef unsigned int _Locale_mask_t;
#endif
void * _Locale_ctype_create(const char *);
void * _Locale_numeric_create(const char *);
void * _Locale_time_create(const char *);
void * _Locale_collate_create(const char *);
void * _Locale_monetary_create(const char *);
void * _Locale_messages_create(const char *);
/*
* The char* argument is a simple locale name.
* These functions return NULL to indicate failure.
* The char* argument is a simple locale name, which may not
* be "". These functions return NULL to indicate failure.
*/
const char * _Locale_ctype_default(char * __buf);
const char * _Locale_numeric_default(char * __buf);
const char * _Locale_time_default(char * __buf);
const char * _Locale_collate_default(char * __buf);
const char * _Locale_monetary_default(char * __buf);
const char * _Locale_messages_default(char * __buf);
/*
* Returns the name of the user's default locale in each
* category, as a null-terminated string. A NULL value
* means the default "C" locale.
*/
char * _Locale_ctype_name(const void *, char *);
char * _Locale_numeric_name(const void *, char *);
char * _Locale_time_name(const void *, char *);
char * _Locale_collate_name(const void *, char *);
char * _Locale_monetary_name(const void *, char *);
char * _Locale_messages_name(const void *, char *);
/*
* __buf points to a buffer that can hold at least _Locale_MAX_SIMPLE_NAME
* characters. These functions store the name, as a null-terminated
* string, in __buf.
*/
void _Locale_ctype_destroy(void *);
void _Locale_numeric_destroy(void *);
void _Locale_time_destroy(void *);
void _Locale_collate_destroy(void *);
void _Locale_monetary_destroy(void *);
void _Locale_messages_destroy(void *);
char * _Locale_extract_ctype_name(const char *cname, char *__buf);
char * _Locale_extract_numeric_name(const char *cname, char *__buf);
char * _Locale_extract_time_name(const char *cname, char *__buf);
char * _Locale_extract_collate_name(const char *cname, char *__buf);
char * _Locale_extract_monetary_name(const char *cname, char *__buf);
char * _Locale_extract_messages_name(const char *cname, char *__buf);
/*
* cname is a (possibly composite) locale name---i.e. a name that can
* be passed to setlocale. _buf points to an array large enough to
* store at least _Locale_MAX_SIMPLE_NAME characters, and each of these
* functions extracts the name of a single category, stores it in buf
* as a null-terminated string, and returns buf.
*/
char * _Locale_compose_name(char *__buf,
const char *__Ctype, const char *__Numeric,
const char *__Time, const char *__Collate,
const char *__Monetary, const char *__Messages);
/*
* The inputs to this function are six null-terminated strings: the
* names of a locale's six categories. __buf is a pointer to an array
* large enough to store at least _Locale_MAX_COMPOSITE_NAME characters.
* This function constructs a (possibly composite) name describing the
* locale as a whole, stores that name in buf as a null-terminated
* string, and returns buf.
*/
/*
* FUNCTIONS THAT USE CTYPE
*/
/*
* Narrow character functions:
*/
_Locale_mask_t * _Locale_ctype_table(struct _Locale_ctype *);
/*
* Returns a pointer to the beginning of the ctype table. The table is
* at least 257 bytes long; if p is the pointer returned by this
* function, then p[c] is valid if c is EOF or if p is any value of
* type unsigned char.
*/
int _Locale_toupper(struct _Locale_ctype *, int);
int _Locale_tolower(struct _Locale_ctype *, int);
/*
* c is either EOF, or an unsigned char value.
*/
# ifndef _STLP_NO_WCHAR_T
/*
* Wide character functions:
*/
_Locale_mask_t _Locale_wchar_ctype(struct _Locale_ctype *, wint_t);
wint_t _Locale_wchar_tolower(struct _Locale_ctype *, wint_t);
wint_t _Locale_wchar_toupper(struct _Locale_ctype *, wint_t);
# endif
# if !defined ( _STLP_NO_MBSTATE_T )
/*
* Multibyte functions:
*/
int _Locale_mb_cur_max (struct _Locale_ctype *);
/*
* Returns the number of bytes of the longest allowed multibyte
* character in the current encoding.
*/
int _Locale_mb_cur_min (struct _Locale_ctype *);
/*
* Returns the number of bytes of the shortest allowed multibyte
* character in the current encoding.
*/
int _Locale_is_stateless (struct _Locale_ctype *);
/*
* Returns 1 if the current multibyte encoding is stateless
* and does not require the use of an mbstate_t value.
*/
# ifndef _STLP_NO_WCHAR_T
wint_t _Locale_btowc(struct _Locale_ctype *, int);
int _Locale_wctob(struct _Locale_ctype *, wint_t);
/*
* Just like btowc and wctob, from 4.6.5.1 of the C standard, Normative
* Addendum 1. (And just like widen/narrow, from clause 22 of the C++
* standard.)
*/
size_t _Locale_mbtowc(struct _Locale_ctype *,
wchar_t *,
const char *, size_t,
mbstate_t *);
/*
* Almost identical to mbrtowc, from 4.6.5.3.2 of NA1. The only
* important difference is that mbrtowc treats null wide characters
* as special, and we don't. Specifically: examines the characters
* in [from, from + n), extracts a single wide character, and stores
* it in *to. Modifies shift_state if appropriate. The return value,
* which is always positive, is the number of characters extracted from
* the input sequence. Return value is (size_t) -1 if there was an
* encoding error in the input sequence, and (size_t) -2 if
* [from, from + n) is correct but not complete. None of the pointer
* arguments may be null pointers.
*/
size_t _Locale_wctomb(struct _Locale_ctype *,
char *, size_t,
const wchar_t,
mbstate_t *);
/*
* Again, very similar to wcrtomb. The differences are that (1) it
* doesn't treat null characters as special; and (2) it stores at most
* n characters. Converts c to a multibyte sequence, stores that
* sequence in the array 'to', and returns the length of the sequence.
* Modifies shift_state if appropriate. The return value is (size_t) -1
* if c is not a valid wide character, and (size_t) -2 if the length of
* the multibyte character sequence is greater than n.
*/
# endif
size_t _Locale_unshift(struct _Locale_ctype *,
mbstate_t *,
char *, size_t, char **);
/*
* Inserts whatever characters are necessary to restore st to an
* initial shift state. Sets *next to buf + m, where m is the number
* of characters inserted. (0 <= m <= n.) Returns m to indicate
* success, (size_t) -1 to indicate error, (size_t) -2 to indicate
* partial success (more than n characters needed). For success or partial
* success, sets *next to buf + m.
*/
# endif /* _STLP_NO_MBSTATE_T */
/*
* FUNCTIONS THAT USE COLLATE
*/
int _Locale_strcmp(struct _Locale_collate *,
const char *, size_t,
const char *, size_t);
# ifndef _STLP_NO_WCHAR_T
int _Locale_strwcmp(struct _Locale_collate *,
const wchar_t *, size_t,
const wchar_t *, size_t);
# endif
/*
* Compares the two sequences [s1, s1 + n1) and [s2, s2 + n2). Neither
* sequence is assumed to be null-terminated, and null characters
* aren't special. If the two sequences are the same up through
* min(n1, n2), then the sequence that compares less is whichever one
* is shorter.
*/
size_t _Locale_strxfrm(struct _Locale_collate *,
char *, size_t,
const char *, size_t);
# ifndef _STLP_NO_WCHAR_T
size_t _Locale_strwxfrm(struct _Locale_collate *,
wchar_t *, size_t,
const wchar_t *, size_t);
# endif
/*
* Creates a transformed version of the string [s2, s2 + n2). The
* string may contain embedded null characters; nulls aren't special.
* The transformed string begins at s1, and contains at most n1
* characters. The return value is the length of the transformed
* string. If the return value is greater than n1 then this is an
* error condition: it indicates that there wasn't enough space. In
* that case, the contents of [s1, s1 + n1) is unspecified.
*/
/*
* FUNCTIONS THAT USE NUMERIC
*/
char _Locale_decimal_point(struct _Locale_numeric *);
char _Locale_thousands_sep(struct _Locale_numeric *);
const char * _Locale_grouping(struct _Locale_numeric *);
/*
* Equivalent to the first three fields in struct lconv. (C standard,
* section 7.4.)
*/
const char * _Locale_true(struct _Locale_numeric *);
const char * _Locale_false(struct _Locale_numeric *);
/*
* Return "true" and "false" in English locales, and something
* appropriate in non-English locales.
*/
/*
* FUNCTIONS THAT USE MONETARY
*/
const char * _Locale_int_curr_symbol(struct _Locale_monetary *);
const char * _Locale_currency_symbol(struct _Locale_monetary *);
char _Locale_mon_decimal_point(struct _Locale_monetary *);
char _Locale_mon_thousands_sep(struct _Locale_monetary *);
const char * _Locale_mon_grouping(struct _Locale_monetary *);
const char * _Locale_positive_sign(struct _Locale_monetary *);
const char * _Locale_negative_sign(struct _Locale_monetary *);
char _Locale_int_frac_digits(struct _Locale_monetary *);
char _Locale_frac_digits(struct _Locale_monetary *);
int _Locale_p_cs_precedes(struct _Locale_monetary *);
int _Locale_p_sep_by_space(struct _Locale_monetary *);
int _Locale_p_sign_posn(struct _Locale_monetary *);
int _Locale_n_cs_precedes(struct _Locale_monetary *);
int _Locale_n_sep_by_space(struct _Locale_monetary *);
int _Locale_n_sign_posn(struct _Locale_monetary *);
/*
* Return the obvious fields of struct lconv.
*/
/*
* FUNCTIONS THAT USE TIME
*/
const char ** _Locale_full_monthname(struct _Locale_time *);
const char ** _Locale_abbrev_monthname(struct _Locale_time *);
/*
* month is in the range [0, 12).
*/
const char ** _Locale_full_dayofweek(struct _Locale_time *);
const char ** _Locale_abbrev_dayofweek(struct _Locale_time *);
/*
* day is in the range [0, 7). Sunday is 0.
*/
const char * _Locale_d_t_fmt(struct _Locale_time *);
const char * _Locale_d_fmt(struct _Locale_time *);
const char * _Locale_t_fmt(struct _Locale_time *);
const char * _Locale_long_d_t_fmt(struct _Locale_time*);
const char * _Locale_long_d_fmt(struct _Locale_time*);
const char * _Locale_am_str(struct _Locale_time *);
const char * _Locale_pm_str(struct _Locale_time *);
const char * _Locale_t_fmt_ampm(struct _Locale_time *);
/*
* FUNCTIONS THAT USE MESSAGES
*/
int _Locale_catopen(struct _Locale_messages*, const char*);
/*
* Very similar to catopen, except that it uses L to determine
* which catalog to open.
*/
void _Locale_catclose(struct _Locale_messages*, int);
/*
* catalog is a value that was returned by a previous call to
* _Locale_catopen
*/
const char * _Locale_catgets(struct _Locale_messages *, int,
int, int,const char *);
/*
* Returns a string, identified by a set index and a message index,
* from an opened message catalog. Returns default if no such
* string exists.
*/
# ifdef __cplusplus
}
_STLP_END_NAMESPACE
# endif
# endif /* _STLP_C_LOCALE_IMPL_H */