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46 lines
1.2 KiB
46 lines
1.2 KiB
5 years ago
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/* _file_support.h
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*
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* Copyright 2002 ARM Limited. All rights reserved.
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*
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* $Id: _file_support.h 172106 2011-11-02 17:04:12Z statham $
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* $URL: http://cam-svn1.cambridge.arm.com/svn/devsys/rvct/cpplib/BRA_RVCT_5.05/stdlib/include/rw/_file_support.h $
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*/
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/* added file to implement some of the fileno behaviour */
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#ifndef _RWSTD_FILE_SUPPORT_H_INCLUDED
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#define _RWSTD_FILE_SUPPORT_H_INCLUDED
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#include <rw/_defs.h>
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#include _RWSTD_CSTDIO
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_RWSTD_NAMESPACE_BEGIN (__rw)
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_USING (namespace std);
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#ifdef _RWSTD_NO_FILENO
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#ifndef STDIN_FILENO
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# define STDIN_FILENO 0
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# define STDOUT_FILENO 1
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# define STDERR_FILENO 2
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#endif //STDIN_FILENO
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inline int fileno (FILE* _C_fptr) // very simple and not complete implementation of fileno
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// not extern "C", which introduces additional complications by masquerading as a 'real' fileno
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{
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if (_C_fptr == &std::__stdin) return STDIN_FILENO;
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if (_C_fptr == &std::__stdout) return STDOUT_FILENO;
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if (_C_fptr == &std::__stderr) return STDERR_FILENO;
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return (int)_C_fptr; // should be unique, but fdopen will not work
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}
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#endif //STDIN_FILENO
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_RWSTD_NAMESPACE_END // __rw
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#endif //_RWSTD_FILE_SUPPORT_H_INCLUDED
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