1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LSTDIO/GETC.C Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,91 @@
1.4 +/* GETC.C
1.5 + *
1.6 + * Portions Copyright (c) 1990-1999 Nokia Corporation and/or its subsidiary(-ies).
1.7 + * All rights reserved.
1.8 + */
1.9 +
1.10 +/*
1.11 + * Copyright (c) 1990 The Regents of the University of California.
1.12 + * All rights reserved.
1.13 + *
1.14 + * Redistribution and use in source and binary forms are permitted
1.15 + * provided that the above copyright notice and this paragraph are
1.16 + * duplicated in all such forms and that any documentation,
1.17 + * advertising materials, and other materials related to such
1.18 + * distribution and use acknowledge that the software was developed
1.19 + * by the University of California, Berkeley. The name of the
1.20 + * University may not be used to endorse or promote products derived
1.21 + * from this software without specific prior written permission.
1.22 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
1.23 + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
1.24 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
1.25 + */
1.26 +
1.27 +/*
1.28 +FUNCTION
1.29 +<<getc>>---read a character (macro)
1.30 +
1.31 +INDEX
1.32 + getc
1.33 +
1.34 +ANSI_SYNOPSIS
1.35 + #include <stdio.h>
1.36 + int getc(FILE *<[fp]>);
1.37 +
1.38 +TRAD_SYNOPSIS
1.39 + #include <stdio.h>
1.40 + int getc(<[fp]>)
1.41 + FILE *<[fp]>;
1.42 +
1.43 +DESCRIPTION
1.44 +<<getc>> is a macro, defined in <<stdio.h>>. You can use <<getc>>
1.45 +to get the next single character from the file or stream
1.46 +identified by <[fp]>. As a side effect, <<getc>> advances the file's
1.47 +current position indicator.
1.48 +
1.49 +For a subroutine version of this macro, see <<fgetc>>.
1.50 +
1.51 +RETURNS
1.52 +The next character (read as an <<unsigned char>>, and cast to
1.53 +<<int>>), unless there is no more data, or the host system reports a
1.54 +read error; in either of these situations, <<getc>> returns <<EOF>>.
1.55 +
1.56 +You can distinguish the two situations that cause an <<EOF>> result by
1.57 +using the <<ferror>> and <<feof>> functions.
1.58 +
1.59 +PORTABILITY
1.60 +ANSI C requires <<getc>>; it suggests, but does not require, that
1.61 +<<getc>> be implemented as a macro. The standard explicitly permits
1.62 +macro implementations of <<getc>> to use the argument more than once;
1.63 +therefore, in a portable program, you should not use an expression
1.64 +with side effects as the <<getc>> argument.
1.65 +
1.66 +Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
1.67 +<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
1.68 +*/
1.69 +
1.70 +#include <stdio.h>
1.71 +#include "LOCAL.H"
1.72 +
1.73 +/*
1.74 + * A subroutine version of the macro getc.
1.75 + */
1.76 +
1.77 +#undef getc
1.78 +
1.79 +/**
1.80 +Get the next character.
1.81 +Returns the next character of the stream and increases the file pointer
1.82 +to point to the next character.
1.83 +@return The character read is returned as an int value.
1.84 +If the End Of File has been reached or there has been an error reading,
1.85 +the function returns EOF.
1.86 +@param fp pointer to an open file.
1.87 +*/
1.88 +EXPORT_C int
1.89 +getc (register FILE *fp)
1.90 +{
1.91 + /* CHECK_INIT is called (eventually) by __srefill. */
1.92 +
1.93 + return __sgetc (fp);
1.94 +}