49d1a4c562
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-w64 runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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/* ISO C1x Unicode utilities
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* Based on ISO/IEC SC22/WG14 9899 TR 19769 (SC22 N1326)
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAIMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Date: 2011-09-27
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*/
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#include <errno.h>
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#include <uchar.h>
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size_t c32rtomb (char *__restrict__ s,
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char32_t c32,
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mbstate_t *__restrict__ __UNUSED_PARAM(ps))
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{
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if (c32 <= 0x7F) /* 7 bits needs 1 byte */
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{
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*s = (char)c32 & 0x7F;
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return 1;
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}
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else if (c32 <= 0x7FF) /* 11 bits needs 2 bytes */
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{
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s[1] = 0x80 | (char)(c32 & 0x3F);
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s[0] = 0xC0 | (char)(c32 >> 6);
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return 2;
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}
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else if (c32 <= 0xFFFF) /* 16 bits needs 3 bytes */
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{
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s[2] = 0x80 | (char)(c32 & 0x3F);
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s[1] = 0x80 | (char)((c32 >> 6) & 0x3F);
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s[0] = 0xE0 | (char)(c32 >> 12);
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return 3;
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}
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else if (c32 <= 0x1FFFFF) /* 21 bits needs 4 bytes */
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{
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s[3] = 0x80 | (char)(c32 & 0x3F);
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s[2] = 0x80 | (char)((c32 >> 6) & 0x3F);
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s[1] = 0x80 | (char)((c32 >> 12) & 0x3F);
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s[0] = 0xF0 | (char)(c32 >> 18);
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return 4;
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}
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errno = EILSEQ;
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return (size_t)-1;
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}
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