wstring(3W)                    DG/UX 5.4R3.00                    wstring(3W)


NAME
       wstring: wscat, wsncat, wscmp, wsncmp, wscpy, wsncpy, wslen, wschr,
       wsrchr, wspbrk, wsspn, wscspn, wstok, wstostr, strtows - wchar_t
       string operations and type transformation

SYNOPSIS
       #include <widec.h>
       wchar_t *wscat(wchar_t *s1, wchar_t *s2);
       wchar_t *wsncat(wchar_t *s1, wchar_t *s2, int n);
       int wscmp(wchar_t *s1, wchar_t *s2);
       int wsncmp(wchar_t *s1, wchar_t *s2, int n);
       wchar_t *wscpy(wchar_t *s1, wchar_t *s2);
       wchar_t *wsncpy(wchar_t *s1, wchar_t *s2, int n);
       int wslen(wchar_t *s);
       wchar_t *wschr(wchar_t *s, int c);
       wchar_t *wsrchr(wchar_t *s, int c);
       wchar_t *wspbrk(wchar_t *s1, wchar_t *s2);
       int wsspn(wchar_t *s1, wchar_t *s2);
       int wscspn(wchar_t *s1, wchar_t *s2);
       wchar_t *wstok(wchar_t *s1, wchar_t *s2);
       char *wstostr(char *s1, wchar_t *s2);
       wchar_t *strtows(wchar_t *s1, char *s2);

DESCRIPTION (International Functions)
       The arguments s1, s2 and s point to wchar_t strings (that is, arrays
       of wchar_t characters terminated by a wchar_t null character).  The
       functions wscat(), wsncat(), wscpy() and wsncpy() all modify s1.
       These functions do not check for an overflow condition of the array
       pointed to by s1.

       wscat() appends a copy of the wchar_t string s2 to the end of the
       wchar_t string s1.  wsncat() appends at most n wchar_t characters.
       Each function returns s1.

       wscmp() compares its arguments and returns an integer less than,
       equal to, or greater than 0, depending on whether s1 is less than,
       equal to, or greater than s2.  wsncmp() makes the same comparison but
       looks at most n wchar_t characters.

       wscpy() copies wchar_t string s2 to s1, stopping after the wchar_t
       null character has been copied.  wsncpy() copies exactly n wchar_t
       characters, truncating s2 or adding wchar_t null characters to s1, if
       necessary.  The result will not be wchar_t null-terminated if the
       length of s2 is n or more.  Each function returns s1.

       wslen() returns the number of wchar_t characters in s, not including
       the terminating wchar_t null character.

       wschr() [wsrchr()] returns a pointer to the first [last] occurrence
       of wchar_t character c in wchar_t string s, or a null pointer, if c
       does not occur in the string.  The wchar_t null character terminating
       a string is considered to be part of the string.

       wspbrk() returns a pointer to the first occurrence in wchar_t string



Licensed material--property of copyright holder(s)                         1

wstring(3W)                    DG/UX 5.4R3.00                    wstring(3W)


       s1 of any wchar_t character from wchar_t string s2, or a null pointer
       if there is no wchar_t character from s2 in s1.

       wsspn() [wscspn()] returns the length of the initial segment of
       wchar_t string s1, which consists [does not consist] entirely of
       wchar_t characters from wchar_t string s2.

       wstok() considers the wchar_t string s1 to consist of a sequence of
       zero or more text tokens, separated by spans of one or more wchar_t
       characters from the separator wchar_t string s2.  The first call
       (with the pointer s1 specified) returns a pointer to the first
       wchar_t character of the first token, and writes a wchar_t null
       character into s1 immediately following the returned token.  The
       function keeps track of its position in the wchar_t string between
       separate calls, so that subsequent calls (which must be made with the
       first argument a null pointer) will progress through the wchar_t
       string s1 immediately following that token.  Similarly, subsequent
       calls will progress through the wchar_t string s1 until no tokens
       remain.  The wchar_t separator string s2 may be different from call
       to call.  A null pointer is returned when no token remains in s1.

       wstostr() transforms wchar_t characters in wchar_t string s2 into
       EUC, and transfers them to character string s1, stopping after the
       wchar_t null character has been processed.

       strtows() transforms EUC in character string s2 into the wchar_t
       characters, and transfers those to wchar_t string s1, stopping after
       the null character has been processed.

DIAGNOSTICS
       On success, wstostr() and strtows() return s1.  If an illegal byte
       sequence is detected, a null pointer is returned and EILSEQ is set to
       errno.

SEE ALSO
       malloc(3C), malloc(3X), widec(3W).





















Licensed material--property of copyright holder(s)                         2