cc05925d9e
Like so --
find . -name "*.c" -or -name "*.h" -exec indent -nbfda -npcs -npsl -bli0 --no-tabs {} \;
The `indent` invocation differs from the last one noted in
CHANGES.txt (from 2006!?), in that I've added "--no-tabs",
to ensure indents are all space-based.
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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(See COPYING.txt)
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*/
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/*
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refer to https://tools.ietf.org/html/rfc3629
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Char. number range | UTF-8 octet sequence
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(hexadecimal) | (binary)
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--------------------+---------------------------------------------
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0000 0000-0000 007F | 0xxxxxxx
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0000 0080-0000 07FF | 110xxxxx 10xxxxxx
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0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
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0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
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*/
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#include "android_mbstowcs.h"
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#include <string.h>
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// This implementation may be simple, but can work fine for all of Android devices
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size_t mbstowcs(wchar_t *__restrict pwcs, const char *__restrict s, size_t n)
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{
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int length = strnlen(s, n);
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// w is the index of pwcs, s is the index of s
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int w = 0, c = 0;
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while (1)
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{
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pwcs[w] = '\0';
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char first = s[c];
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int len = 0;
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if ((first & 0x80) == 0)
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{
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pwcs[w] = (wchar_t) s[c];
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len = 1;
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}
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else if ((first & 0xe0) == 0xc0)
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{
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pwcs[w] |= first & 0x1f;
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pwcs[w] <<= 6;
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pwcs[w] |= s[c + 1] & 0x3f;
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len = 2;
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}
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else if ((first & 0xf0) == 0xe0)
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{
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pwcs[w] |= first & 0x0f;
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pwcs[w] <<= 6;
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pwcs[w] |= s[c + 1] & 0x3f;
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pwcs[w] <<= 6;
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pwcs[w] |= s[c + 2] & 0x3f;
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len = 3;
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}
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else if ((first & 0xf8) == 0xf0)
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{
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pwcs[w] |= first & 0x07;
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pwcs[w] <<= 6;
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pwcs[w] |= s[c + 1] & 0x3f;
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pwcs[w] <<= 6;
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pwcs[w] |= s[c + 2] & 0x3f;
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pwcs[w] <<= 6;
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pwcs[w] |= s[c + 3] & 0x3f;
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len = 4;
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}
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else
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{
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return -1;
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}
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c += len;
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w++;
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if (c > length)
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{
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pwcs[w] = '\0';
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return -1;
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}
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if (c == length)
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{
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pwcs[w] = '\0';
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return w;
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}
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}
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}
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