| 0,0 → 1,188 |
|---|
| /* |
| FUNCTION |
| <<wcsrtombs>>, <<wcsnrtombs>>---convert a wide-character string to a character string |
| |
| INDEX |
| wcsrtombs |
| INDEX |
| _wcsrtombs_r |
| INDEX |
| wcsnrtombs |
| INDEX |
| _wcsnrtombs_r |
| |
| ANSI_SYNOPSIS |
| #include <wchar.h> |
| size_t wcsrtombs(char *__restrict <[dst]>, |
| const wchar_t **__restrict <[src]>, size_t <[len]>, |
| mbstate_t *__restrict <[ps]>); |
| |
| #include <wchar.h> |
| size_t _wcsrtombs_r(struct _reent *<[ptr]>, char *<[dst]>, |
| const wchar_t **<[src]>, size_t <[len]>, |
| mbstate_t *<[ps]>); |
| |
| #include <wchar.h> |
| size_t wcsnrtombs(char *__restrict <[dst]>, |
| const wchar_t **__restrict <[src]>, |
| size_t <[nwc]>, size_t <[len]>, |
| mbstate_t *__restrict <[ps]>); |
| |
| #include <wchar.h> |
| size_t _wcsnrtombs_r(struct _reent *<[ptr]>, char *<[dst]>, |
| const wchar_t **<[src]>, size_t <[nwc]>, |
| size_t <[len]>, mbstate_t *<[ps]>); |
| |
| TRAD_SYNOPSIS |
| #include <wchar.h> |
| size_t wcsrtombs(<[dst]>, <[src]>, <[len]>, <[ps]>) |
| char *__restrict <[dst]>; |
| const wchar_t **__restrict <[src]>; |
| size_t <[len]>; |
| mbstate_t *__restrict <[ps]>; |
| |
| #include <wchar.h> |
| size_t _wcsrtombs_r(<[ptr]>, <[dst]>, <[src]>, <[len]>, <[ps]>) |
| struct _rent *<[ptr]>; |
| char *<[dst]>; |
| const wchar_t **<[src]>; |
| size_t <[len]>; |
| mbstate_t *<[ps]>; |
| |
| #include <wchar.h> |
| size_t wcsnrtombs(<[dst]>, <[src]>, <[nwc]>, <[len]>, <[ps]>) |
| char *__restrict <[dst]>; |
| const wchar_t **__restrict <[src]>; |
| size_t <[nwc]>; |
| size_t <[len]>; |
| mbstate_t *__restrict <[ps]>; |
| |
| #include <wchar.h> |
| size_t _wcsnrtombs_r(<[ptr]>, <[dst]>, <[src]>, <[nwc]>, <[len]>, <[ps]>) |
| struct _rent *<[ptr]>; |
| char *<[dst]>; |
| const wchar_t **<[src]>; |
| size_t <[nwc]>; |
| size_t <[len]>; |
| mbstate_t *<[ps]>; |
| |
| DESCRIPTION |
| The <<wcsrtombs>> function converts a string of wide characters indirectly |
| pointed to by <[src]> to a corresponding multibyte character string stored in |
| the array pointed to by <[dst]>. No more than <[len]> bytes are written to |
| <[dst]>. |
| |
| If <[dst]> is NULL, no characters are stored. |
| |
| If <[dst]> is not NULL, the pointer pointed to by <[src]> is updated to point |
| to the character after the one that conversion stopped at. If conversion |
| stops because a null character is encountered, *<[src]> is set to NULL. |
| |
| The mbstate_t argument, <[ps]>, is used to keep track of the shift state. If |
| it is NULL, <<wcsrtombs>> uses an internal, static mbstate_t object, which |
| is initialized to the initial conversion state at program startup. |
| |
| The <<wcsnrtombs>> function behaves identically to <<wcsrtombs>>, except that |
| conversion stops after reading at most <[nwc]> characters from the buffer |
| pointed to by <[src]>. |
| |
| RETURNS |
| The <<wcsrtombs>> and <<wcsnrtombs>> functions return the number of bytes |
| stored in the array pointed to by <[dst]> (not including any terminating |
| null), if successful, otherwise it returns (size_t)-1. |
| |
| PORTABILITY |
| <<wcsrtombs>> is defined by C99 standard. |
| <<wcsnrtombs>> is defined by the POSIX.1-2008 standard. |
| */ |
| |
| #include <reent.h> |
| #include <newlib.h> |
| #include <wchar.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include "local.h" |
| |
| size_t |
| _DEFUN (_wcsnrtombs_r, (r, dst, src, nwc, len, ps), |
| struct _reent *r _AND |
| char *dst _AND |
| const wchar_t **src _AND |
| size_t nwc _AND |
| size_t len _AND |
| mbstate_t *ps) |
| { |
| char *ptr = dst; |
| char buff[10]; |
| wchar_t *pwcs; |
| size_t n; |
| int i; |
| |
| #ifdef _MB_CAPABLE |
| if (ps == NULL) |
| { |
| _REENT_CHECK_MISC(r); |
| ps = &(_REENT_WCSRTOMBS_STATE(r)); |
| } |
| #endif |
| |
| /* If no dst pointer, treat len as maximum possible value. */ |
| if (dst == NULL) |
| len = (size_t)-1; |
| |
| n = 0; |
| pwcs = (wchar_t *)(*src); |
| |
| while (n < len && nwc-- > 0) |
| { |
| int count = ps->__count; |
| wint_t wch = ps->__value.__wch; |
| int bytes = __wctomb (r, buff, *pwcs, __locale_charset (), ps); |
| if (bytes == -1) |
| { |
| r->_errno = EILSEQ; |
| ps->__count = 0; |
| return (size_t)-1; |
| } |
| if (n + bytes <= len) |
| { |
| n += bytes; |
| if (dst) |
| { |
| for (i = 0; i < bytes; ++i) |
| *ptr++ = buff[i]; |
| ++(*src); |
| } |
| if (*pwcs++ == 0x00) |
| { |
| if (dst) |
| *src = NULL; |
| ps->__count = 0; |
| return n - 1; |
| } |
| } |
| else |
| { |
| /* not enough room, we must back up state to before __wctomb call */ |
| ps->__count = count; |
| ps->__value.__wch = wch; |
| len = 0; |
| } |
| } |
| |
| return n; |
| } |
| |
| #ifndef _REENT_ONLY |
| size_t |
| _DEFUN (wcsnrtombs, (dst, src, nwc, len, ps), |
| char *__restrict dst _AND |
| const wchar_t **__restrict src _AND |
| size_t nwc _AND |
| size_t len _AND |
| mbstate_t *__restrict ps) |
| { |
| return _wcsnrtombs_r (_REENT, dst, src, nwc, len, ps); |
| } |
| #endif /* !_REENT_ONLY */ |