mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-05 20:33:41 +00:00
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/*
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* Copyright (C) 2009-2012 the libgit2 contributors
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#include "common.h"
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#include "utf-conv.h"
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#define U16_LEAD(c) (wchar_t)(((c)>>10)+0xd7c0)
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#define U16_TRAIL(c) (wchar_t)(((c)&0x3ff)|0xdc00)
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#if 0
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void git__utf8_to_16(wchar_t *dest, size_t length, const char *src)
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{
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wchar_t *pDest = dest;
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uint32_t ch;
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const uint8_t* pSrc = (uint8_t*) src;
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assert(dest && src && length);
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length--;
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while(*pSrc && length > 0) {
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ch = *pSrc++;
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length--;
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if(ch < 0xc0) {
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/*
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* ASCII, or a trail byte in lead position which is treated like
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* a single-byte sequence for better character boundary
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* resynchronization after illegal sequences.
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*/
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*pDest++ = (wchar_t)ch;
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continue;
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} else if(ch < 0xe0) { /* U+0080..U+07FF */
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if (pSrc[0]) {
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/* 0x3080 = (0xc0 << 6) + 0x80 */
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*pDest++ = (wchar_t)((ch << 6) + *pSrc++ - 0x3080);
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continue;
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}
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} else if(ch < 0xf0) { /* U+0800..U+FFFF */
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if (pSrc[0] && pSrc[1]) {
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/* no need for (ch & 0xf) because the upper bits are truncated after <<12 in the cast to (UChar) */
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/* 0x2080 = (0x80 << 6) + 0x80 */
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ch = (ch << 12) + (*pSrc++ << 6);
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*pDest++ = (wchar_t)(ch + *pSrc++ - 0x2080);
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continue;
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}
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} else /* f0..f4 */ { /* U+10000..U+10FFFF */
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if (length >= 1 && pSrc[0] && pSrc[1] && pSrc[2]) {
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/* 0x3c82080 = (0xf0 << 18) + (0x80 << 12) + (0x80 << 6) + 0x80 */
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ch = (ch << 18) + (*pSrc++ << 12);
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ch += *pSrc++ << 6;
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ch += *pSrc++ - 0x3c82080;
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*(pDest++) = U16_LEAD(ch);
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*(pDest++) = U16_TRAIL(ch);
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length--; /* two bytes for this character */
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continue;
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}
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}
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/* truncated character at the end */
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*pDest++ = 0xfffd;
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break;
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}
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*pDest++ = 0x0;
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}
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#endif
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void git__utf8_to_16(wchar_t *dest, size_t length, const char *src)
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{
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MultiByteToWideChar(CP_UTF8, 0, src, -1, dest, (int)length);
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}
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void git__utf16_to_8(char *out, const wchar_t *input)
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{
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WideCharToMultiByte(CP_UTF8, 0, input, -1, out, GIT_WIN_PATH, NULL, NULL);
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}
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