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Some cleanups, tdf#105170 follow-up

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* Do some sanity checks on the arguments.
* Use OUStringBuffer and append to it, instead of OUString.
* Fold the string at once when offsets aren’t needed.

Change-Id: I9c450f4cbb938b18ddfec2b9aca12a290b114c98
Reviewed-on: https://gerrit.libreoffice.org/33219
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>
This commit is contained in:
Khaled Hosny
2017-01-17 15:15:36 +02:00
committed by Eike Rathke
parent 743f9fc86f
commit fa2eb4b43f
1 changed files with 30 additions and 23 deletions
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53
i18npool/source/transliteration/ignoreDiacritics_CTL.cxx
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@@ -7,9 +7,10 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <rtl/ustrbuf.hxx>
#include <transliteration_Ignore.hxx>
#include <unicode/uchar.h>
#include <unicode/translit.h>
#include <unicode/uchar.h>
namespace com { namespace sun { namespace star { namespace i18n {
@@ -56,37 +57,43 @@ ignoreDiacritics_CTL::folding(const OUString& rInStr, sal_Int32 nStartPos,
if (!m_transliterator)
throw css::uno::RuntimeException();
OUString aOutStr;
if (nStartPos < 0 || nStartPos + nCount > rInStr.getLength())
throw css::uno::RuntimeException();
sal_Int32 nPosition = nStartPos;
sal_Int32 nOffset = 0;
if (useOffset)
{
OUStringBuffer aOutBuf(nCount);
rOffset.realloc(nCount);
while (nPosition < nStartPos + nCount)
{
sal_Int32 nIndex = nPosition;
UChar32 nChar = rInStr.iterateCodePoints(&nIndex);
UnicodeString aChar(nChar);
m_transliterator->transliterate(aChar);
if (useOffset && nOffset + aChar.length() > rOffset.getLength())
rOffset.realloc(rOffset.getLength() + aChar.length());
for (int32_t i = 0; i < aChar.length(); i++)
sal_Int32 nPosition = nStartPos;
sal_Int32 nOffset = 0;
while (nPosition < nStartPos + nCount)
{
aOutStr += OUStringLiteral1(aChar[i]);
if (useOffset)
sal_Int32 nIndex = nPosition;
UChar32 nChar = rInStr.iterateCodePoints(&nIndex);
UnicodeString aUStr(nChar);
m_transliterator->transliterate(aUStr);
if (nOffset + aUStr.length() > rOffset.getLength())
rOffset.realloc(rOffset.getLength() + aUStr.length());
aOutBuf.append(reinterpret_cast<const sal_Unicode*>(aUStr.getBuffer()), aUStr.length());
for (int32_t i = 0; i < aUStr.length(); i++)
rOffset[nOffset++] = nPosition;
nPosition = nIndex;
}
nPosition = nIndex;
rOffset.realloc(aOutBuf.getLength());
return aOutBuf.makeStringAndClear();
}
else
{
UnicodeString aUStr(reinterpret_cast<const UChar*>(rInStr.getStr()) + nStartPos, nCount);
m_transliterator->transliterate(aUStr);
return OUString(reinterpret_cast<const sal_Unicode*>(aUStr.getBuffer()), aUStr.length());
}
if (useOffset)
rOffset.realloc(aOutStr.getLength());
return aOutStr;
}
} } } }