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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "sal/config.h"
#include <cstddef>
#include "osl/diagnose.h"
#include "rtl/textcvt.h"
#include "sal/types.h"
#include "context.hxx"
#include "converter.hxx"
#include "convertsinglebytetobmpunicode.hxx"
#include "unichars.hxx"
sal_Size rtl_textenc_convertSingleByteToBmpUnicode(
void const * data, SAL_UNUSED_PARAMETER void *, sal_Char const * srcBuf,
sal_Size srcBytes, sal_Unicode * destBuf, sal_Size destChars,
sal_uInt32 flags, sal_uInt32 * info, sal_Size * srcCvtBytes)
{
sal_Unicode const * map = static_cast<
rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
data)->byteToUnicode;
sal_uInt32 infoFlags = 0;
sal_Size converted = 0;
sal_Unicode * destBufPtr = destBuf;
sal_Unicode * destBufEnd = destBuf + destChars;
for (; converted < srcBytes; ++converted) {
bool undefined = true;
sal_Char b = *srcBuf++;
sal_Unicode c = map[static_cast< sal_uInt8 >(b)];
if (c == 0xFFFF) {
goto bad_input;
}
if (destBufEnd - destBufPtr < 1) {
goto no_output;
}
*destBufPtr++ = c;
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
undefined, false, b, flags, &destBufPtr, destBufEnd,
&infoFlags))
{
case sal::detail::textenc::BAD_INPUT_STOP:
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--srcBuf;
infoFlags |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
if (info != 0) {
*info = infoFlags;
}
if (srcCvtBytes != 0) {
*srcCvtBytes = converted;
}
return destBufPtr - destBuf;
}
sal_Size rtl_textenc_convertBmpUnicodeToSingleByte(
void const * data, void * context,
sal_Unicode const * srcBuf, sal_Size srcChars, sal_Char * destBuf,
sal_Size destBytes, sal_uInt32 flags, sal_uInt32 * info,
sal_Size * srcCvtChars)
{
std::size_t entries = static_cast<
rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
data)->unicodeToByteEntries;
rtl::textenc::BmpUnicodeToSingleByteRange const * ranges = static_cast<
rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
data)->unicodeToByte;
sal_Unicode highSurrogate = 0;
sal_uInt32 infoFlags = 0;
sal_Size converted = 0;
sal_Char * destBufPtr = destBuf;
sal_Char * destBufEnd = destBuf + destBytes;
if (context != 0) {
highSurrogate = static_cast< ImplUnicodeToTextContext * >(context)->
m_nHighSurrogate;
}
for (; converted < srcChars; ++converted) {
bool undefined = true;
sal_uInt32 c = *srcBuf++;
if (highSurrogate == 0) {
if (ImplIsHighSurrogate(c)) {
highSurrogate = static_cast< sal_Unicode >(c);
continue;
}
} else if (ImplIsLowSurrogate(c)) {
c = ImplCombineSurrogates(highSurrogate, c);
} else {
undefined = false;
goto bad_input;
}
if (ImplIsLowSurrogate(c) || ImplIsNoncharacter(c)) {
undefined = false;
goto bad_input;
}
// Linearly searching through the ranges if probably fastest, assuming
// that most converted characters belong to the ASCII subset:
for (std::size_t i = 0; i < entries; ++i) {
if (c < ranges[i].unicode) {
break;
} else if (c <= sal::static_int_cast< sal_uInt32 >(
ranges[i].unicode + ranges[i].range))
{
if (destBufEnd - destBufPtr < 1) {
goto no_output;
}
*destBufPtr++ = static_cast< sal_Char >(
ranges[i].byte + (c - ranges[i].unicode));
goto done;
}
}
goto bad_input;
done:
highSurrogate = 0;
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
undefined, c, flags, &destBufPtr, destBufEnd, &infoFlags, 0,
0, 0))
{
case sal::detail::textenc::BAD_INPUT_STOP:
highSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
highSurrogate = 0;
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--srcBuf;
infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
if (highSurrogate != 0
&& ((infoFlags
& (RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
== 0))
{
if ((flags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0) {
infoFlags |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
} else {
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
false, 0, flags, &destBufPtr, destBufEnd, &infoFlags, 0,
0, 0))
{
case sal::detail::textenc::BAD_INPUT_STOP:
case sal::detail::textenc::BAD_INPUT_CONTINUE:
highSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
}
}
if (context != 0) {
static_cast< ImplUnicodeToTextContext * >(context)->m_nHighSurrogate
= highSurrogate;
}
if (info != 0) {
*info = infoFlags;
}
if (srcCvtChars != 0) {
*srcCvtChars = converted;
}
return destBufPtr - destBuf;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
