fgetws man page on DigitalUNIX

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fgetws(3)							     fgetws(3)

       fgetws - Get a string from a stream

       #include <stdio.h> #include <wchar.h>

       wchar_t *fgetws(
	       wchar_t *wcs,
	       int number,
	       FILE *stream );

       Standard C Library (libc)

       Interfaces  documented on this reference page conform to industry stan‐
       dards as follows:

       fgetws: XSH5.0

       Refer to the standards(5) reference page	 for  more  information	 about
       industry standards and associated tags.

       Points  to a buffer where output wide characters are stored.  Points to
       the FILE structure of an open file.  Specifies  an  upper  bound	 (num‐
       ber-1) on the number of characters to read.

       The  fgetws() function reads characters from stream, converts them into
       the corresponding wide characters, and stores the result in the wchar_t
       array  pointed  to  by the wcs parameter. The function reads until num‐
       ber-1 characters have been read, it has read and stored in  the	buffer
       the  \n (newline) character, or it has encountered the end-of-file con‐
       dition. The function then appends a null wide character to  the	result
       stored in wcs.

       The fgetws() function parallels the fgets() function.

       On  successful  completion,  the fgetws() function returns a pointer to
       wcs. Under the  following  conditions,  the  function  returns  a  null
       pointer: The function encounters the end of the file before any charac‐
       ters are read. In this case, fgetws() does not store any	 wide  charac‐
       ters  in wcs and sets the end-of-file indicator for the stream.	A read
       error occurs. In this case, fgetws() sets  both	errno  and  the	 error
       indicator  for  stream. After a read error, the value of the file-posi‐
       tion indicator for stream is indeterminate.  [Tru64 UNIX]  The function
       could not convert the input character to a wide character.

       If  any	of  the following conditions occur, the fgetws() sets errno to
       the corresponding value: The O_NONBLOCK option  is  set	for  the  file
       descriptor  underlying  stream  and the process would be delayed in the
       fgetws() call.  The file descriptor underlying stream is	 not  a	 valid
       file descriptor that is open for reading.  The data obtained from stdin
       or the stream did not contain valid characters in the  current  locale.
       The  read  operation was terminated by a signal, and no data was trans‐
       ferred.	One of the following conditions was encountered:  The  process
       is  in  a  background process group that is attempting to read from its
       controlling terminal and either the process is ignoring or blocking the
       SIGTTIN	signal or the process group is orphaned.  A physical I/O error
       occurred. This condition was defined starting with XSH Issue 4  Version
       2.   The	 file  is a regular file and an attempt was made to read at or
       beyond the offset maximum that is  associated  with  the	 corresponding

       Functions:   clearerr(3),   feof(3),  ferror(3),	 fileno(3),  fopen(3),
       fputws(3), fread(3), getc(3), gets(3),  getwc(3),  mbtowc(3),  puts(3),
       scanf(3), wscanf(3)

       Standards: standards(5)


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