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-rw-r--r--comphelper/source/misc/string.cxx678
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diff --git a/comphelper/source/misc/string.cxx b/comphelper/source/misc/string.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+#include <cstddef>
+#include <string_view>
+#include <utility>
+#include <vector>
+#include <algorithm>
+
+#include <o3tl/safeint.hxx>
+#include <o3tl/string_view.hxx>
+#include <rtl/character.hxx>
+#include <rtl/ustring.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <rtl/string.hxx>
+#include <rtl/strbuf.hxx>
+#include <sal/log.hxx>
+#include <sal/types.h>
+
+#include <comphelper/string.hxx>
+#include <comphelper/stl_types.hxx>
+#include <comphelper/sequence.hxx>
+
+#include <com/sun/star/i18n/BreakIterator.hpp>
+#include <com/sun/star/i18n/CharType.hpp>
+#include <com/sun/star/i18n/Collator.hpp>
+
+
+namespace comphelper::string {
+
+namespace
+{
+ template <typename T, typename C> T tmpl_stripStart(const T &rIn,
+ const C cRemove)
+ {
+ if (rIn.empty())
+ return rIn;
+
+ typename T::size_type i = 0;
+
+ while (i < rIn.size())
+ {
+ if (rIn[i] != cRemove)
+ break;
+ ++i;
+ }
+
+ return rIn.substr(i);
+ }
+ template <typename T, typename C> T tmpl_stripStartString(const T &rIn,
+ const C cRemove)
+ {
+ if (rIn.isEmpty())
+ return rIn;
+
+ sal_Int32 i = 0;
+
+ while (i < rIn.getLength())
+ {
+ if (rIn[i] != cRemove)
+ break;
+ ++i;
+ }
+
+ return rIn.copy(i);
+ }
+}
+
+OString stripStart(const OString& rIn, char c)
+{
+ return tmpl_stripStartString<OString, char>(rIn, c);
+}
+
+std::string_view stripStart(std::string_view rIn, char c)
+{
+ return tmpl_stripStart<std::string_view, char>(rIn, c);
+}
+
+OUString stripStart(const OUString& rIn, sal_Unicode c)
+{
+ return tmpl_stripStartString<OUString, sal_Unicode>(rIn, c);
+}
+
+std::u16string_view stripStart(std::u16string_view rIn, sal_Unicode c)
+{
+ return tmpl_stripStart<std::u16string_view, sal_Unicode>(rIn, c);
+}
+
+namespace
+{
+ template <typename T, typename C> T tmpl_stripEnd(const T &rIn,
+ const C cRemove)
+ {
+ if (rIn.empty())
+ return rIn;
+
+ typename T::size_type i = rIn.size();
+
+ while (i > 0)
+ {
+ if (rIn[i-1] != cRemove)
+ break;
+ --i;
+ }
+
+ return rIn.substr(0, i);
+ }
+ template <typename T, typename C> T tmpl_stripEndString(const T &rIn,
+ const C cRemove)
+ {
+ if (rIn.isEmpty())
+ return rIn;
+
+ sal_Int32 i = rIn.getLength();
+
+ while (i > 0)
+ {
+ if (rIn[i-1] != cRemove)
+ break;
+ --i;
+ }
+
+ return rIn.copy(0, i);
+ }
+}
+
+OString stripEnd(const OString& rIn, char c)
+{
+ return tmpl_stripEndString<OString, char>(rIn, c);
+}
+
+std::string_view stripEnd(std::string_view rIn, char c)
+{
+ return tmpl_stripEnd<std::string_view, char>(rIn, c);
+}
+
+OUString stripEnd(const OUString& rIn, sal_Unicode c)
+{
+ return tmpl_stripEndString<OUString, sal_Unicode>(rIn, c);
+}
+
+std::u16string_view stripEnd(std::u16string_view rIn, sal_Unicode c)
+{
+ return tmpl_stripEnd<std::u16string_view, sal_Unicode>(rIn, c);
+}
+
+namespace
+{
+ template <typename T, typename C> T tmpl_strip(const T &rIn,
+ const C cRemove)
+ {
+ if (rIn.empty())
+ return rIn;
+
+ typename T::size_type end = rIn.size();
+ while (end > 0)
+ {
+ if (rIn[end-1] != cRemove)
+ break;
+ --end;
+ }
+
+ typename T::size_type start = 0;
+ while (start < end)
+ {
+ if (rIn[start] != cRemove)
+ break;
+ ++start;
+ }
+
+ return rIn.substr(start, end - start);
+ }
+ template <typename T, typename C> T tmpl_stripString(const T &rIn,
+ const C cRemove)
+ {
+ if (rIn.isEmpty())
+ return rIn;
+
+ sal_Int32 end = rIn.getLength();
+ while (end > 0)
+ {
+ if (rIn[end-1] != cRemove)
+ break;
+ --end;
+ }
+ sal_Int32 start = 0;
+ while (start < end)
+ {
+ if (rIn[start] != cRemove)
+ break;
+ ++start;
+ }
+
+ return rIn.copy(start, end - start);
+ }
+}
+
+OString strip(const OString& rIn, char c)
+{
+ return tmpl_stripString<OString, char>(rIn, c);
+}
+
+std::string_view strip(std::string_view rIn, char c)
+{
+ return tmpl_strip<std::string_view, char>(rIn, c);
+}
+
+OUString strip(const OUString& rIn, sal_Unicode c)
+{
+ return tmpl_stripString<OUString, sal_Unicode>(rIn, c);
+}
+
+std::u16string_view strip(std::u16string_view rIn, sal_Unicode c)
+{
+ return tmpl_strip<std::u16string_view, sal_Unicode>(rIn, c);
+}
+
+namespace
+{
+ template <typename T, typename C> sal_Int32 tmpl_getTokenCount( T rIn,
+ C cTok)
+ {
+ // Empty String: TokenCount by Definition is 0
+ if (rIn.empty())
+ return 0;
+
+ sal_Int32 nTokCount = 1;
+ for (typename T::size_type i = 0; i < rIn.size(); ++i)
+ {
+ if (rIn[i] == cTok)
+ ++nTokCount;
+ }
+ return nTokCount;
+ }
+}
+
+sal_Int32 getTokenCount(std::string_view rIn, char cTok)
+{
+ return tmpl_getTokenCount<std::string_view, char>(rIn, cTok);
+}
+
+sal_Int32 getTokenCount(std::u16string_view rIn, sal_Unicode cTok)
+{
+ return tmpl_getTokenCount<std::u16string_view, sal_Unicode>(rIn, cTok);
+}
+
+sal_uInt32 decimalStringToNumber(std::u16string_view str)
+{
+ sal_uInt32 result = 0;
+ for( sal_Int32 i = 0; i < static_cast<sal_Int32>(str.size()); )
+ {
+ sal_uInt32 c = o3tl::iterateCodePoints(str, &i);
+ sal_uInt32 value = 0;
+ if( c <= 0x0039) // ASCII decimal digits, most common
+ value = c - 0x0030;
+ else if( c >= 0x1D7F6 ) // mathematical monospace digits
+ value = c - 0x1D7F6;
+ else if( c >= 0x1D7EC ) // mathematical sans-serif bold digits
+ value = c - 0x1D7EC;
+ else if( c >= 0x1D7E2 ) // mathematical sans-serif digits
+ value = c - 0x1D7E2;
+ else if( c >= 0x1D7D8 ) // mathematical double-struck digits
+ value = c - 0x1D7D8;
+ else if( c >= 0x1D7CE ) // mathematical bold digits
+ value = c - 0x1D7CE;
+ else if( c >= 0x11066 ) // brahmi digits
+ value = c - 0x11066;
+ else if( c >= 0x104A0 ) // osmanya digits
+ value = c - 0x104A0;
+ else if( c >= 0xFF10 ) // fullwidth digits
+ value = c - 0xFF10;
+ else if( c >= 0xABF0 ) // meetei mayek digits
+ value = c - 0xABF0;
+ else if( c >= 0xAA50 ) // cham digits
+ value = c - 0xAA50;
+ else if( c >= 0xA9D0 ) // javanese digits
+ value = c - 0xA9D0;
+ else if( c >= 0xA900 ) // kayah li digits
+ value = c - 0xA900;
+ else if( c >= 0xA8D0 ) // saurashtra digits
+ value = c - 0xA8D0;
+ else if( c >= 0xA620 ) // vai digits
+ value = c - 0xA620;
+ else if( c >= 0x1C50 ) // ol chiki digits
+ value = c - 0x1C50;
+ else if( c >= 0x1C40 ) // lepcha digits
+ value = c - 0x1C40;
+ else if( c >= 0x1BB0 ) // sundanese digits
+ value = c - 0x1BB0;
+ else if( c >= 0x1B50 ) // balinese digits
+ value = c - 0x1B50;
+ else if( c >= 0x1A90 ) // tai tham tham digits
+ value = c - 0x1A90;
+ else if( c >= 0x1A80 ) // tai tham hora digits
+ value = c - 0x1A80;
+ else if( c >= 0x19D0 ) // new tai lue digits
+ value = c - 0x19D0;
+ else if( c >= 0x1946 ) // limbu digits
+ value = c - 0x1946;
+ else if( c >= 0x1810 ) // mongolian digits
+ value = c - 0x1810;
+ else if( c >= 0x17E0 ) // khmer digits
+ value = c - 0x17E0;
+ else if( c >= 0x1090 ) // myanmar shan digits
+ value = c - 0x1090;
+ else if( c >= 0x1040 ) // myanmar digits
+ value = c - 0x1040;
+ else if( c >= 0x0F20 ) // tibetan digits
+ value = c - 0x0F20;
+ else if( c >= 0x0ED0 ) // lao digits
+ value = c - 0x0ED0;
+ else if( c >= 0x0E50 ) // thai digits
+ value = c - 0x0E50;
+ else if( c >= 0x0D66 ) // malayalam digits
+ value = c - 0x0D66;
+ else if( c >= 0x0CE6 ) // kannada digits
+ value = c - 0x0CE6;
+ else if( c >= 0x0C66 ) // telugu digits
+ value = c - 0x0C66;
+ else if( c >= 0x0BE6 ) // tamil digits
+ value = c - 0x0BE6;
+ else if( c >= 0x0B66 ) // odia digits
+ value = c - 0x0B66;
+ else if( c >= 0x0AE6 ) // gujarati digits
+ value = c - 0x0AE6;
+ else if( c >= 0x0A66 ) // gurmukhi digits
+ value = c - 0x0A66;
+ else if( c >= 0x09E6 ) // bengali digits
+ value = c - 0x09E6;
+ else if( c >= 0x0966 ) // devanagari digit
+ value = c - 0x0966;
+ else if( c >= 0x07C0 ) // nko digits
+ value = c - 0x07C0;
+ else if( c >= 0x06F0 ) // extended arabic-indic digits
+ value = c - 0x06F0;
+ else if( c >= 0x0660 ) // arabic-indic digits
+ value = c - 0x0660;
+ result = result * 10 + value;
+ }
+ return result;
+}
+
+using namespace ::com::sun::star;
+
+// convert between sequence of string and comma separated string
+
+OUString convertCommaSeparated(
+ uno::Sequence< OUString > const& i_rSeq)
+{
+ OUStringBuffer buf;
+ ::comphelper::intersperse(
+ i_rSeq.begin(), i_rSeq.end(), ::comphelper::OUStringBufferAppender(buf), OUString( ", " ));
+ return buf.makeStringAndClear();
+}
+
+std::vector<OUString>
+ split(std::u16string_view rStr, sal_Unicode cSeparator)
+{
+ std::vector< OUString > vec;
+ std::size_t idx = 0;
+ do
+ {
+ std::u16string_view kw = o3tl::getToken(rStr, cSeparator, idx);
+ kw = o3tl::trim(kw);
+ if (!kw.empty())
+ {
+ vec.push_back(OUString(kw));
+ }
+
+ } while (idx != std::u16string_view::npos);
+
+ return vec;
+}
+
+uno::Sequence< OUString >
+ convertCommaSeparated( std::u16string_view i_rString )
+{
+ std::vector< OUString > vec = split(i_rString, ',');
+ return comphelper::containerToSequence(vec);
+}
+
+OString join(std::string_view rSeparator, const std::vector<OString>& rSequence)
+{
+ OStringBuffer aBuffer;
+ for (size_t i = 0; i < rSequence.size(); ++i)
+ {
+ if (i != 0)
+ aBuffer.append(rSeparator);
+ aBuffer.append(rSequence[i]);
+ }
+ return aBuffer.makeStringAndClear();
+}
+
+sal_Int32 compareNatural( const OUString & rLHS, const OUString & rRHS,
+ const uno::Reference< i18n::XCollator > &rCollator,
+ const uno::Reference< i18n::XBreakIterator > &rBI,
+ const lang::Locale &rLocale )
+{
+ sal_Int32 nRet = 0;
+
+ sal_Int32 nLHSLastNonDigitPos = 0;
+ sal_Int32 nRHSLastNonDigitPos = 0;
+ sal_Int32 nLHSFirstDigitPos = 0;
+ sal_Int32 nRHSFirstDigitPos = 0;
+
+ // Check if the string starts with a digit
+ sal_Int32 nStartsDigitLHS = rBI->endOfCharBlock(rLHS, nLHSFirstDigitPos, rLocale, i18n::CharType::DECIMAL_DIGIT_NUMBER);
+ sal_Int32 nStartsDigitRHS = rBI->endOfCharBlock(rRHS, nRHSFirstDigitPos, rLocale, i18n::CharType::DECIMAL_DIGIT_NUMBER);
+
+ if (nStartsDigitLHS > 0 && nStartsDigitRHS > 0)
+ {
+ sal_uInt32 nLHS = comphelper::string::decimalStringToNumber(rLHS.subView(0, nStartsDigitLHS));
+ sal_uInt32 nRHS = comphelper::string::decimalStringToNumber(rRHS.subView(0, nStartsDigitRHS));
+
+ if (nLHS != nRHS)
+ return nLHS < nRHS ? -1 : 1;
+ nLHSLastNonDigitPos = nStartsDigitLHS;
+ nRHSLastNonDigitPos = nStartsDigitRHS;
+ }
+ else if (nStartsDigitLHS > 0)
+ return -1;
+ else if (nStartsDigitRHS > 0)
+ return 1;
+
+ while (nLHSFirstDigitPos < rLHS.getLength() || nRHSFirstDigitPos < rRHS.getLength())
+ {
+ sal_Int32 nLHSChunkLen;
+ sal_Int32 nRHSChunkLen;
+
+ //Compare non digit block as normal strings
+ nLHSFirstDigitPos = rBI->nextCharBlock(rLHS, nLHSLastNonDigitPos, rLocale, i18n::CharType::DECIMAL_DIGIT_NUMBER);
+ nRHSFirstDigitPos = rBI->nextCharBlock(rRHS, nRHSLastNonDigitPos, rLocale, i18n::CharType::DECIMAL_DIGIT_NUMBER);
+
+ if (nLHSFirstDigitPos == -1)
+ nLHSFirstDigitPos = rLHS.getLength();
+
+ if (nRHSFirstDigitPos == -1)
+ nRHSFirstDigitPos = rRHS.getLength();
+
+ nLHSChunkLen = nLHSFirstDigitPos - nLHSLastNonDigitPos;
+ nRHSChunkLen = nRHSFirstDigitPos - nRHSLastNonDigitPos;
+
+ nRet = rCollator->compareSubstring(rLHS, nLHSLastNonDigitPos, nLHSChunkLen, rRHS, nRHSLastNonDigitPos, nRHSChunkLen);
+ if (nRet != 0)
+ break;
+
+ //Compare digit block as one number vs another
+ nLHSLastNonDigitPos = rBI->endOfCharBlock(rLHS, nLHSFirstDigitPos, rLocale, i18n::CharType::DECIMAL_DIGIT_NUMBER);
+ nRHSLastNonDigitPos = rBI->endOfCharBlock(rRHS, nRHSFirstDigitPos, rLocale, i18n::CharType::DECIMAL_DIGIT_NUMBER);
+ if (nLHSLastNonDigitPos == -1)
+ nLHSLastNonDigitPos = rLHS.getLength();
+ if (nRHSLastNonDigitPos == -1)
+ nRHSLastNonDigitPos = rRHS.getLength();
+ nLHSChunkLen = nLHSLastNonDigitPos - nLHSFirstDigitPos;
+ nRHSChunkLen = nRHSLastNonDigitPos - nRHSFirstDigitPos;
+
+ //To-Do: Possibly scale down those unicode codepoints that relate to
+ //numbers outside of the normal 0-9 range, e.g. see GetLocalizedChar in
+ //vcl
+
+ sal_uInt32 nLHS = comphelper::string::decimalStringToNumber(rLHS.subView(nLHSFirstDigitPos, nLHSChunkLen));
+ sal_uInt32 nRHS = comphelper::string::decimalStringToNumber(rRHS.subView(nRHSFirstDigitPos, nRHSChunkLen));
+
+ if (nLHS != nRHS)
+ {
+ nRet = (nLHS < nRHS) ? -1 : 1;
+ break;
+ }
+ }
+
+ return nRet;
+}
+
+NaturalStringSorter::NaturalStringSorter(
+ const uno::Reference< uno::XComponentContext > &rContext,
+ lang::Locale aLocale) : m_aLocale(std::move(aLocale))
+{
+ m_xCollator = i18n::Collator::create( rContext );
+ m_xCollator->loadDefaultCollator(m_aLocale, 0);
+ m_xBI = i18n::BreakIterator::create( rContext );
+}
+
+bool isdigitAsciiString(std::string_view rString)
+{
+ return std::all_of(
+ rString.data(), rString.data() + rString.size(),
+ [](unsigned char c){ return rtl::isAsciiDigit(c); });
+}
+
+bool isdigitAsciiString(std::u16string_view rString)
+{
+ return std::all_of(
+ rString.data(), rString.data() + rString.size(),
+ [](sal_Unicode c){ return rtl::isAsciiDigit(c); });
+}
+
+OUString reverseString(std::u16string_view rStr)
+{
+ if (rStr.empty())
+ return OUString();
+
+ std::size_t i = rStr.size();
+ OUStringBuffer sBuf(static_cast<sal_Int32>(i));
+ while (i)
+ sBuf.append(rStr[--i]);
+ return sBuf.makeStringAndClear();
+}
+
+OUString reverseCodePoints(OUString const & str) {
+ auto const len = str.getLength();
+ OUStringBuffer buf(len);
+ for (auto i = len; i != 0;) {
+ buf.appendUtf32(str.iterateCodePoints(&i, -1));
+ }
+ return buf.makeStringAndClear();
+}
+
+sal_Int32 indexOfAny(std::u16string_view rIn,
+ sal_Unicode const*const pChars, sal_Int32 const nPos)
+{
+ for (std::u16string_view::size_type i = nPos; i < rIn.size(); ++i)
+ {
+ sal_Unicode const c = rIn[i];
+ for (sal_Unicode const* pChar = pChars; *pChar; ++pChar)
+ {
+ if (c == *pChar)
+ {
+ return i;
+ }
+ }
+ }
+ return -1;
+}
+
+OUString removeAny(std::u16string_view rIn,
+ sal_Unicode const*const pChars)
+{
+ OUStringBuffer buf;
+ bool isFound(false);
+ for (std::u16string_view::size_type i = 0; i < rIn.size(); ++i)
+ {
+ sal_Unicode const c = rIn[i];
+ bool removeC(false);
+ for (sal_Unicode const* pChar = pChars; *pChar; ++pChar)
+ {
+ if (c == *pChar)
+ {
+ removeC = true;
+ break;
+ }
+ }
+ if (removeC)
+ {
+ if (!isFound)
+ {
+ if (i > 0)
+ {
+ buf.append(rIn.substr(0, i));
+ }
+ isFound = true;
+ }
+ }
+ else if (isFound)
+ {
+ buf.append(c);
+ }
+ }
+ return isFound ? buf.makeStringAndClear() : OUString(rIn);
+}
+
+OUString setToken(const OUString& rIn, sal_Int32 nToken, sal_Unicode cTok,
+ std::u16string_view rNewToken)
+{
+ sal_Int32 nLen = rIn.getLength();
+ sal_Int32 nTok = 0;
+ sal_Int32 nFirstChar = 0;
+ sal_Int32 i = 0;
+
+ // Determine token position and length
+ while ( i < nLen )
+ {
+ // Increase token count if match
+ if (rIn[i] == cTok)
+ {
+ ++nTok;
+
+ if (nTok == nToken)
+ nFirstChar = i+1;
+ else if (nTok > nToken)
+ break;
+ }
+
+ ++i;
+ }
+
+ if (nTok >= nToken)
+ return rIn.replaceAt(nFirstChar, i-nFirstChar, rNewToken);
+ return rIn;
+}
+
+/** Similar to OUString::replaceAt, but for an OUStringBuffer.
+
+ Replace n = count characters
+ from position index in this string with newStr.
+ */
+void replaceAt(OUStringBuffer& rIn, sal_Int32 nIndex, sal_Int32 nCount, std::u16string_view newStr )
+{
+ assert(nIndex >= 0 && nIndex <= rIn.getLength());
+ assert(nCount >= 0);
+ assert(nCount <= rIn.getLength() - nIndex);
+
+ /* Append? */
+ const sal_Int32 nOldLength = rIn.getLength();
+ if ( nIndex == nOldLength )
+ {
+ rIn.append(newStr);
+ return;
+ }
+
+ sal_Int32 nNewLength = nOldLength + newStr.size() - nCount;
+ if (newStr.size() > o3tl::make_unsigned(nCount))
+ rIn.ensureCapacity(nOldLength + newStr.size() - nCount);
+
+ sal_Unicode* pStr = const_cast<sal_Unicode*>(rIn.getStr());
+ memmove(pStr + nIndex + newStr.size(), pStr + nIndex + nCount, nOldLength - nIndex + nCount);
+ memcpy(pStr + nIndex, newStr.data(), newStr.size());
+
+ rIn.setLength(nNewLength);
+}
+
+OUString sanitizeStringSurrogates(const OUString& rString)
+{
+ sal_Int32 i=0;
+ while (i < rString.getLength())
+ {
+ sal_Unicode c = rString[i];
+ if (rtl::isHighSurrogate(c))
+ {
+ if (i+1 == rString.getLength()
+ || !rtl::isLowSurrogate(rString[i+1]))
+ {
+ SAL_WARN("comphelper", "Surrogate error: high without low");
+ return rString.copy(0, i);
+ }
+ ++i; //skip correct low
+ }
+ if (rtl::isLowSurrogate(c)) //bare low without preceding high
+ {
+ SAL_WARN("comphelper", "Surrogate error: low without high");
+ return rString.copy(0, i);
+ }
+ ++i;
+ }
+ return rString;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */