mbsrtowcs(3)               Library Functions Manual               mbsrtowcs(3)

NOM
       mbsrtowcs - convert a multibyte string to a wide-character string
       (restartable)

BIBLIOTHEQUE
       Bibliotheque C standard (libc, -lc)

SYNOPSIS
       #include <wchar.h>

       size_t mbsrtowcs(wchar_t dest[restrict .dsize], const char **restrict src,
                        size_t dsize, mbstate_t *restrict ps);

DESCRIPTION
       If dest is not NULL, convert the multibyte string *src to a
       wide-character string starting at dest.  At most dsize wide characters
       are written to dest.  The shift state *ps is updated.  The conversion
       is effectively performed by repeatedly calling mbrtowc(dest, *src, n,
       ps) where n is some positive number, as long as this call succeeds, and
       then incrementing dest by one and *src by the number of bytes consumed.
       The conversion can stop for three reasons:

       -  Une sequence multioctet incorrecte a ete rencontree. Dans ce cas,
          *src pointera sur la sequence incorrecte, et la fonction renvoie
          (size_t) -1 en positionnant errno a la valeur EILSEQ.

       -  dsize non-L'\0' wide characters have been stored at dest.  In this
          case, *src is left pointing to the next multibyte sequence to be
          converted, and the number of wide characters written to dest is
          returned.

       -  La sequence multioctet a ete completement convertie, y compris le
          caractere nul ('\0') final, ce qui a pour effet de bord de ramener
          *ps a l'etat initial. Dans ce cas, *src est mis a NULL, et le nombre
          de caracteres ecrits dans dest, moins le caractere large nul final,
          est renvoye.

       If dest is NULL, dsize is ignored, and the conversion proceeds as
       above, except that the converted wide characters are not written out to
       memory, and that no length limit exists.

       Dans tous les cas, si ps est un pointeur NULL, un etat anonyme
       statique, reserve a la fonction mbsnrtowcs() est utilise a sa place.

       In order to avoid the case 2 above, the programmer should make sure
       dsize is greater than or equal to mbsrtowcs(NULL,src,0,ps)+1.

       The programmer must ensure that there is room for at least dsize wide
       characters at dest.

       This function is a restartable version of mbstowcs(3).

VALEUR RENVOYEE
       The number of wide characters that make up the converted part of the
       wide-character string, not including the terminating null wide
       character.  If an invalid multibyte sequence was encountered,
       (size_t) -1 is returned, and errno set to EILSEQ.

ATTRIBUTS
       Pour une explication des termes utilises dans cette section, consulter
       attributes(7).

       +------------+--------------------------+------------------------------+
       |Interface   | Attribut                 | Valeur                       |
       +------------+--------------------------+------------------------------+
       |mbsrtowcs() | Securite des threads     | MT-Unsafe race:mbsrtowcs/!ps |
       +------------+--------------------------+------------------------------+
STANDARDS
       C11, POSIX.1-2008.

HISTORIQUE
       POSIX.1-2001, C99.

NOTES
       Le comportement de mbsrtowcs() depend de la categorie LC_CTYPE de la
       localisation en cours.

       Passer NULL dans ps n'est pas sur dans un contexte multithread.

VOIR AUSSI
       iconv(3), mbrtowc(3), mbsinit(3), mbsnrtowcs(3), mbstowcs(3)

TRADUCTION
       La traduction francaise de cette page de manuel a ete creee par
       Christophe Blaess <https://www.blaess.fr/christophe/>, Stephan Rafin
       <stephan.rafin@laposte.net>, Thierry Vignaud <tvignaud@mandriva.com>,
       Francois Micaux, Alain Portal <aportal@univ-montp2.fr>, Jean-Philippe
       Guerard <fevrier@tigreraye.org>, Jean-Luc Coulon (f5ibh) <jean-
       luc.coulon@wanadoo.fr>, Julien Cristau <jcristau@debian.org>, Thomas
       Huriaux <thomas.huriaux@gmail.com>, Nicolas Francois
       <nicolas.francois@centraliens.net>, Florentin Duneau
       <fduneau@gmail.com>, Simon Paillard <simon.paillard@resel.enst-
       bretagne.fr>, Denis Barbier <barbier@debian.org>, David Prevot
       <david@tilapin.org>, Jean-Baptiste Holcroft <jean-baptiste@holcroft.fr>
       et Gregoire Scano <gregoire.scano@malloc.fr>

       Cette traduction est une documentation libre ; veuillez vous reporter a
       la GNU General Public License version 3
       <https://www.gnu.org/licenses/gpl-3.0.html> concernant les conditions
       de copie et de distribution. Il n'y a aucune RESPONSABILITE LEGALE.

       Si vous decouvrez un bogue dans la traduction de cette page de manuel,
       veuillez envoyer un message a <debian-l10n-french@lists.debian.org>.

Pages du manuel de Linux 6.06  19 novembre 2023                   mbsrtowcs(3)