C++ (Cpp) utf8_to_u_hostendian Examples

Example #1

File: encodings.cpp Project: tqh/haiku_efi_old

// utf8 to LENDIAN unicode
static status_t
_utf8_to_lendian_unicode(
	const char	*src,
	size_t		*srcLen,
	char		*dst,
	size_t		*dstLen)
{
	size_t srcLimit = *srcLen;
	size_t dstLimit = *dstLen - 1;
	size_t srcCount = 0;
	size_t dstCount = 0;
	status_t status = B_ERROR;

	while ((srcCount < srcLimit) && (dstCount < dstLimit)) {
		uint16	unicode;
		uint16	*UNICODE = &unicode;
		uchar	*UTF8 = (uchar *)src + srcCount;
		int     err_flag;

		if ((srcCount + utf8_char_len(src[srcCount])) > srcLimit)
			break;

		utf8_to_u_hostendian(UTF8, UNICODE, err_flag);
		if (err_flag == 1)
			return EINVAL;

		unicode = B_HOST_TO_LENDIAN_INT16(unicode);
		if ((dstCount + 1) > dstLimit) {
			status = B_BUFFER_OVERFLOW;
			break;
		}
		dst[dstCount++] = unicode & 0xFF;
		dst[dstCount++] = unicode >> 8;

		srcCount += UTF8 - ((uchar *)(src + srcCount));
		status = B_OK;
	}

	*srcLen = srcCount;
	*dstLen = dstCount;

	return status;
}

Example #2

File: encodings.cpp Project: jiangxilong/haiku

// utf8 to LENDIAN unicode
static status_t
_utf8_to_lendian_unicode(
	const char	*src,
	int32		*srcLen,
	char		*dst,
	uint32		*dstLen)
{
	int32 srcLimit = *srcLen;
	int32 dstLimit = *dstLen - 1;
	int32 srcCount = 0;
	int32 dstCount = 0;

	while ((srcCount < srcLimit) && (dstCount < dstLimit)) {
		uint16	unicode;
		uint16	*UNICODE = &unicode;
		uchar	*UTF8 = (uchar *)src + srcCount;
		int     err_flag;

		if ((srcCount + utf8_char_len(src[srcCount])) > srcLimit)
			break;

		utf8_to_u_hostendian(UTF8, UNICODE, err_flag);
		if(err_flag == 1)
			return EINVAL;

		unicode = B_HOST_TO_LENDIAN_INT16(unicode);
		dst[dstCount++] = unicode & 0xFF;
		dst[dstCount++] = unicode >> 8;

		srcCount += UTF8 - ((uchar *)(src + srcCount));
	}

	*srcLen = srcCount;
	*dstLen = dstCount;

	return ((dstCount > 0) ? B_NO_ERROR : B_ERROR);
}