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/* FLAGS.C
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*
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* Portions Copyright (c) 1990-1999 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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*/
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/* No user fns here. Pesch 15apr92 */
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/*
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* Copyright (c) 1990 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include <stdio_r.h>
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#include <time.h>
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#include <fcntl.h>
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#include "LOCAL.H"
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#include <errno.h>
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#include <sys/types.h>
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/*
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* Return the (stdio) flags for a given mode. Store the flags
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* to be passed to an open() syscall through *optr.
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* Return 0 on error.
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*/
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int __sflags (struct _reent *ptr, const wchar_t *mode, int *optr)
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{
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register int ret, m, o;
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switch (mode[0])
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{
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case L'r': /* open for reading */
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ret = __SRD;
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m = O_RDONLY;
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o = 0;
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break;
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case L'w': /* open for writing */
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ret = __SWR;
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m = O_WRONLY;
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o = O_CREAT | O_TRUNC;
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break;
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case L'a': /* open for appending */
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ret = __SWR | __SAPP;
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m = O_WRONLY;
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o = O_CREAT | O_APPEND;
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break;
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default: /* illegal mode */
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ptr->_errno = EINVAL;
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return (0);
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}
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if (mode[1] == L'+' || mode[2] == L'+')
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{
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ret = __SRW;
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m = O_RDWR;
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}
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if (mode[1] == L'b' || mode[2] == L'b')
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{
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m |= O_BINARY;
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}
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else
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{
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m |= O_TEXT;
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}
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*optr = m | o;
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return ret;
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}
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