| 0,0 → 1,106 |
|---|
| /* |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms are permitted |
| * provided that the above copyright notice and this paragraph are |
| * duplicated in all such forms and that any documentation, |
| * advertising materials, and other materials related to such |
| * distribution and use acknowledge that the software was developed |
| * by the University of California, Berkeley. The name of the |
| * University may not be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| /* |
| FUNCTION |
| <<fgetc>>---get a character from a file or stream |
| |
| INDEX |
| fgetc |
| INDEX |
| _fgetc_r |
| |
| ANSI_SYNOPSIS |
| #include <stdio.h> |
| int fgetc(FILE *<[fp]>); |
| |
| #include <stdio.h> |
| int _fgetc_r(struct _reent *<[ptr]>, FILE *<[fp]>); |
| |
| TRAD_SYNOPSIS |
| #include <stdio.h> |
| int fgetc(<[fp]>) |
| FILE *<[fp]>; |
| |
| #include <stdio.h> |
| int _fgetc_r(<[ptr]>, <[fp]>) |
| struct _reent *<[ptr]>; |
| FILE *<[fp]>; |
| |
| DESCRIPTION |
| Use <<fgetc>> to get the next single character from the file or stream |
| identified by <[fp]>. As a side effect, <<fgetc>> advances the file's |
| current position indicator. |
| |
| For a macro version of this function, see <<getc>>. |
| |
| The function <<_fgetc_r>> is simply a reentrant version of |
| <<fgetc>> that is passed the additional reentrant structure |
| pointer argument: <[ptr]>. |
| |
| RETURNS |
| The next character (read as an <<unsigned char>>, and cast to |
| <<int>>), unless there is no more data, or the host system reports a |
| read error; in either of these situations, <<fgetc>> returns <<EOF>>. |
| |
| You can distinguish the two situations that cause an <<EOF>> result by |
| using the <<ferror>> and <<feof>> functions. |
| |
| PORTABILITY |
| ANSI C requires <<fgetc>>. |
| |
| Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, |
| <<lseek>>, <<read>>, <<sbrk>>, <<write>>. |
| */ |
| |
| #include <_ansi.h> |
| #include <stdio.h> |
| #include "local.h" |
| |
| int |
| _DEFUN(_fgetc_r, (ptr, fp), |
| struct _reent * ptr _AND |
| FILE * fp) |
| { |
| int result; |
| CHECK_INIT(ptr, fp); |
| _flockfile (fp); |
| result = __sgetc_r (ptr, fp); |
| _funlockfile (fp); |
| return result; |
| } |
| |
| #ifndef _REENT_ONLY |
| |
| int |
| _DEFUN(fgetc, (fp), |
| FILE * fp) |
| { |
| #if !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__) |
| int result; |
| CHECK_INIT(_REENT, fp); |
| _flockfile (fp); |
| result = __sgetc_r (_REENT, fp); |
| _funlockfile (fp); |
| return result; |
| #else |
| return _fgetc_r (_REENT, fp); |
| #endif |
| } |
| |
| #endif /* !_REENT_ONLY */ |
| |