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| -rw-r--r-- | include/comphelper/string.hxx | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/include/comphelper/string.hxx b/include/comphelper/string.hxx new file mode 100644 index 000000000..a722e2cc4 --- /dev/null +++ b/include/comphelper/string.hxx @@ -0,0 +1,386 @@ +/* -*- 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 . + */ +#pragma once + +#include <sal/config.h> + +#include <algorithm> +#include <vector> +#include <comphelper/comphelperdllapi.h> +#include <sal/types.h> +#include <rtl/strbuf.hxx> +#include <rtl/ustrbuf.hxx> +#include <com/sun/star/uno/Sequence.h> +#include <com/sun/star/uno/Reference.hxx> + +#include <com/sun/star/lang/Locale.hpp> + +namespace com::sun::star::i18n { class XBreakIterator; } +namespace com::sun::star::i18n { class XCollator; } +namespace com::sun::star::uno { class XComponentContext; } + +// OUString helper functions that are not widespread or mature enough to +// go into the stable URE API: +namespace comphelper::string { + +/** Removes all occurrences of a character from within the source string + + @param rIn The input OUStringBuffer + @param c The character to be removed + + @return The resulting OUStringBuffer + */ +inline OUStringBuffer& remove(OUStringBuffer &rIn, + sal_Unicode c) +{ + sal_Int32 index = 0; + while (true) + { + if (index >= rIn.getLength()) + break; + index = rIn.indexOf(c, index); + if (index == -1) + break; + rIn.remove(index, 1); + } + return rIn; +} + +/** Strips occurrences of a character from the start of the source string + + @param rIn The input OString + @param c The character to be stripped from the start + + @return The resulting OString + */ +COMPHELPER_DLLPUBLIC OString stripStart(const OString& rIn, + char c); +COMPHELPER_DLLPUBLIC std::string_view stripStart(std::string_view rIn, + char c); + +/** Strips occurrences of a character from the start of the source string + + @param rIn The input OUString + @param c The character to be stripped from the start + + @return The resulting OUString + */ +COMPHELPER_DLLPUBLIC OUString stripStart(const OUString& rIn, + sal_Unicode c); +COMPHELPER_DLLPUBLIC std::u16string_view stripStart(std::u16string_view rIn, + sal_Unicode c); + +/** Strips occurrences of a character from the end of the source string + + @param rIn The input OString + @param c The character to be stripped from the end + + @return The resulting OString + */ +COMPHELPER_DLLPUBLIC OString stripEnd(const OString& rIn, + char c); +COMPHELPER_DLLPUBLIC std::string_view stripEnd(std::string_view rIn, + char c); + +/** Strips occurrences of a character from the end of the source string + + @param rIn The input OUString + @param c The character to be stripped from the end + + @return The resulting OUString + */ +COMPHELPER_DLLPUBLIC OUString stripEnd(const OUString& rIn, + sal_Unicode c); +COMPHELPER_DLLPUBLIC std::u16string_view stripEnd(std::u16string_view rIn, + sal_Unicode c); + +/** Strips occurrences of a character from the start and end of the source string + + @param rIn The input OString + @param c The character to be stripped from the start and end + + @return The resulting OString + */ +COMPHELPER_DLLPUBLIC OString strip(const OString& rIn, + char c); +COMPHELPER_DLLPUBLIC std::string_view strip(std::string_view rIn, + char c); + +/** Strips occurrences of a character from the start and end of the source string + + @param rIn The input OUString + @param c The character to be stripped from the start and end + + @return The resulting OUString + */ +COMPHELPER_DLLPUBLIC OUString strip(const OUString& rIn, + sal_Unicode c); +COMPHELPER_DLLPUBLIC std::u16string_view strip(std::u16string_view rIn, + sal_Unicode c); + +/** Returns number of tokens in an OUString + + @param rIn the input OString + @param cTok the character which separate the tokens. + @return the number of tokens +*/ +COMPHELPER_DLLPUBLIC sal_Int32 getTokenCount(std::string_view rIn, char cTok); + +/** Returns number of tokens in an OUString + + @param rIn the input OUString + @param cTok the character which separate the tokens. + @return the number of tokens +*/ +COMPHELPER_DLLPUBLIC sal_Int32 getTokenCount(std::u16string_view rIn, sal_Unicode cTok); + +/** Reverse an OUString's UTF-16 code units. + + @param rIn the input OUString + @return the reversed input +*/ +COMPHELPER_DLLPUBLIC OUString reverseString(std::u16string_view rStr); + +/** Reverse an OString + + @param rIn the input OString + @return the reversed input +*/ +COMPHELPER_DLLPUBLIC OString reverseString(std::string_view rStr); + +/** Reverse an OUString's Unicode code points. +*/ +COMPHELPER_DLLPUBLIC OUString reverseCodePoints(OUString const & str); + +namespace detail +{ + template<typename B> B& truncateToLength(B& rBuffer, sal_Int32 nLen) + { + if (nLen < rBuffer.getLength()) + rBuffer.setLength(nLen); + return rBuffer; + } +} + +/** Truncate a buffer to a given length. + + If the StringBuffer has more characters than nLength it will be truncated + on the right to nLength characters. + + Has no effect if the StringBuffer is <= nLength + + @param rBuf StringBuffer to operate on + @param nLength Length to truncate the buffer to + + @return rBuf; + */ +inline OUStringBuffer& truncateToLength( + OUStringBuffer& rBuffer, sal_Int32 nLength) +{ + return detail::truncateToLength(rBuffer, nLength); +} + +namespace detail +{ + template<typename B, typename U> B& padToLength(B& rBuffer, sal_Int32 nLen, U cFill) + { + const sal_Int32 nPadLen = nLen - rBuffer.getLength(); + if (nPadLen > 0) + std::fill_n(rBuffer.appendUninitialized(nPadLen), nPadLen, cFill); + return rBuffer; + } +} + +/** Pad a buffer to a given length using a given char. + + If the StringBuffer has less characters than nLength it will be expanded on + the right to nLength characters, with the expansion filled using cFill. + + Has no effect if the StringBuffer is >= nLength + + @param rBuf StringBuffer to operate on + @param nLength Length to pad the buffer to + @param cFill character to fill expansion with + + @return rBuf; + */ +inline OStringBuffer& padToLength( + OStringBuffer& rBuffer, sal_Int32 nLength, + char cFill = '\0') +{ + return detail::padToLength(rBuffer, nLength, cFill); +} + +inline OUStringBuffer& padToLength( + OUStringBuffer& rBuffer, sal_Int32 nLength, + sal_Unicode cFill = '\0') +{ + return detail::padToLength(rBuffer, nLength, cFill); +} + +/** Similar to OUString::replaceAt, but for an OUStringBuffer. + + Replace n = count characters + from position index in this string with newStr. + */ +COMPHELPER_DLLPUBLIC void replaceAt(OUStringBuffer& rIn, sal_Int32 index, sal_Int32 count, std::u16string_view newStr ); + +/** Replace a token in a string + @param rIn OUString in which the token is to be replaced + @param nToken which nToken to replace + @param cTok token delimiter + @param rNewToken replacement token + + @return original string with token nToken replaced by rNewToken + */ +COMPHELPER_DLLPUBLIC OUString setToken(const OUString& rIn, sal_Int32 nToken, sal_Unicode cTok, + std::u16string_view rNewToken); + +/** Find any of a list of code units in the string. + @param rIn OUString to search + @param pChars 0-terminated array of sal_Unicode code units to search for + @param nPos start position + + @return position of first occurrence of any of the elements of pChars + or -1 if none of the code units occur in the string + */ +COMPHELPER_DLLPUBLIC sal_Int32 indexOfAny(std::u16string_view rIn, + sal_Unicode const*const pChars, sal_Int32 const nPos); + +/** Remove any of a list of code units in the string. + @param rIn OUString to search + @param pChars 0-terminated array of sal_Unicode code units to search for + + @return OUString that has all of the pChars code units removed + */ +COMPHELPER_DLLPUBLIC OUString removeAny(std::u16string_view rIn, + sal_Unicode const*const pChars); + +/** Convert a sequence of strings to a single comma separated string. + + Note that no escaping of commas or anything fancy is done. + + @param i_rSeq A list of strings to be concatenated. + + @return A single string containing the concatenation of the given + list, interspersed with the string ", ". + */ +COMPHELPER_DLLPUBLIC OUString convertCommaSeparated( + css::uno::Sequence< OUString > const & i_rSeq); + +/// Return a string which is the concatenation of the strings in the sequence. +COMPHELPER_DLLPUBLIC OString join(std::string_view rSeparator, const std::vector<OString>& rSequence); + +/** Convert a decimal string to a number. + + The string must be base-10, no sign but can contain any + codepoint listed in the "Number, Decimal Digit" Unicode + category. + + No verification is made about the validity of the string, + passing string not containing decimal digit code points + gives unspecified results + + If your string is guaranteed to contain only ASCII digit + use OUString::toInt32 instead. + + @param str The string to convert containing only decimal + digit codepoints. + + @return The value of the string as an int32. + */ +COMPHELPER_DLLPUBLIC sal_uInt32 decimalStringToNumber( + OUString const & str ); + +COMPHELPER_DLLPUBLIC std::vector<OUString> + split(std::u16string_view rString, const sal_Unicode cSeparator); + +/** Convert a single comma separated string to a sequence of strings. + + Note that no escaping of commas or anything fancy is done. + + @param i_rString A string containing comma-separated words. + + @return A sequence of strings resulting from splitting the given + string at ',' tokens and stripping whitespace. + */ +COMPHELPER_DLLPUBLIC css::uno::Sequence< OUString > + convertCommaSeparated( std::u16string_view i_rString ); + +/** + Compares two strings using natural order. + + For non digit characters, the comparison use the same algorithm as + rtl_str_compare. When a number is encountered during the comparison, + natural order is used. Thus, Heading 10 will be considered as greater + than Heading 2. Numerical comparison is done using decimal representation. + + Beware that "MyString 001" and "MyString 1" will be considered as equal + since leading 0 are meaningless. + + @param str the object to be compared. + @return 0 - if both strings are equal + < 0 - if this string is less than the string argument + > 0 - if this string is greater than the string argument +*/ +COMPHELPER_DLLPUBLIC sal_Int32 compareNatural( const OUString &rLHS, const OUString &rRHS, + const css::uno::Reference< css::i18n::XCollator > &rCollator, + const css::uno::Reference< css::i18n::XBreakIterator > &rBI, + const css::lang::Locale &rLocale ); + +class COMPHELPER_DLLPUBLIC NaturalStringSorter +{ +private: + css::lang::Locale const m_aLocale; + css::uno::Reference< css::i18n::XCollator > m_xCollator; + css::uno::Reference< css::i18n::XBreakIterator > m_xBI; +public: + NaturalStringSorter( + const css::uno::Reference< css::uno::XComponentContext > &rContext, + css::lang::Locale aLocale); + sal_Int32 compare(const OUString &rLHS, const OUString &rRHS) const + { + return compareNatural(rLHS, rRHS, m_xCollator, m_xBI, m_aLocale); + } + const css::lang::Locale& getLocale() const { return m_aLocale; } +}; + +/** Determine if an OString contains solely ASCII numeric digits + + @param rString An OString + + @return false if string contains any characters outside + the ASCII '0'-'9' range + true otherwise, including for empty string + */ +COMPHELPER_DLLPUBLIC bool isdigitAsciiString(std::string_view rString); + +/** Determine if an OUString contains solely ASCII numeric digits + + @param rString An OUString + + @return false if string contains any characters outside + the ASCII '0'-'9' range + true otherwise, including for empty string + */ +COMPHELPER_DLLPUBLIC bool isdigitAsciiString(std::u16string_view rString); + +} // namespace comphelper::string + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |