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diff --git a/include/rtl/string.hxx b/include/rtl/string.hxx new file mode 100644 index 000000000..0e3dad692 --- /dev/null +++ b/include/rtl/string.hxx @@ -0,0 +1,2314 @@ +/* -*- 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 . + */ + +/* + * This file is part of LibreOffice published API. + */ + +#ifndef INCLUDED_RTL_STRING_HXX +#define INCLUDED_RTL_STRING_HXX + +#include "sal/config.h" + +#include <cassert> +#include <cstddef> +#include <cstdlib> +#include <limits> +#include <new> +#include <ostream> +#include <utility> +#include <string.h> + +#if defined LIBO_INTERNAL_ONLY +#include <string_view> +#include <type_traits> +#endif + +#include "rtl/textenc.h" +#include "rtl/string.h" +#include "rtl/stringutils.hxx" + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" +#include "config_global.h" +#include "rtl/stringconcat.hxx" +#endif + +#ifdef RTL_STRING_UNITTEST +extern bool rtl_string_unittest_const_literal; +extern bool rtl_string_unittest_const_literal_function; +#endif + +// The unittest uses slightly different code to help check that the proper +// calls are made. The class is put into a different namespace to make +// sure the compiler generates a different (if generating also non-inline) +// copy of the function and does not merge them together. The class +// is "brought" into the proper rtl namespace by a typedef below. +#ifdef RTL_STRING_UNITTEST +#define rtl rtlunittest +#endif + +namespace rtl +{ + +/// @cond INTERNAL +#ifdef RTL_STRING_UNITTEST +#undef rtl +// helper macro to make functions appear more readable +#define RTL_STRING_CONST_FUNCTION rtl_string_unittest_const_literal_function = true; +#else +#define RTL_STRING_CONST_FUNCTION +#endif +/// @endcond + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" +/** +A wrapper dressing a string literal as a static-refcount rtl_String. + +This class is not part of public API and is meant to be used only in LibreOffice code. +@since LibreOffice 4.0 +*/ +template<std::size_t N> class SAL_WARN_UNUSED OStringLiteral { + static_assert(N != 0); + static_assert(N - 1 <= std::numeric_limits<sal_Int32>::max(), "literal too long"); + friend class OString; + +public: +#if HAVE_CPP_CONSTEVAL + consteval +#else + constexpr +#endif + OStringLiteral(char const (&literal)[N]) { + assertLayout(); + assert(literal[N - 1] == '\0'); + //TODO: Use C++20 constexpr std::copy_n (P0202R3): + for (std::size_t i = 0; i != N; ++i) { + more.buffer[i] = literal[i]; + } + } + +#if defined __cpp_char8_t +#if HAVE_CPP_CONSTEVAL + consteval +#else + constexpr +#endif + explicit OStringLiteral(char8_t const (&literal)[N]) { + assertLayout(); + assert(literal[N - 1] == '\0'); + //TODO: Use C++20 constexpr std::copy_n (P0202R3): + for (std::size_t i = 0; i != N; ++i) { + more.buffer[i] = literal[i]; + } + } +#endif + + constexpr sal_Int32 getLength() const { return more.length; } + + constexpr char const * getStr() const SAL_RETURNS_NONNULL { return more.buffer; } + + constexpr operator std::string_view() const { return {more.buffer, sal_uInt32(more.length)}; } + +private: + static constexpr void assertLayout() { + // These static_asserts verifying the layout compatibility with rtl_String cannot be class + // member declarations, as offsetof requires a complete type, so defer them to here: + static_assert(std::is_standard_layout_v<OStringLiteral>); + static_assert(offsetof(OStringLiteral, str.refCount) == offsetof(OStringLiteral, more.refCount)); + static_assert(offsetof(OStringLiteral, str.length) == offsetof(OStringLiteral, more.length)); + static_assert(offsetof(OStringLiteral, str.buffer) == offsetof(OStringLiteral, more.buffer)); + } + + struct Data { + Data() = default; + + oslInterlockedCount refCount = 0x40000000; // SAL_STRING_STATIC_FLAG (sal/rtl/strimp.hxx) + sal_Int32 length = N - 1; + char buffer[N] = {}; //TODO: drop initialization for C++20 (P1331R2) + }; + + union { + rtl_String str; + Data more = {}; + }; +}; +#endif + +/* ======================================================================= */ + +/** + This String class provide base functionality for C++ like 8-Bit + character array handling. The advantage of this class is, that it + handle all the memory management for you - and it do it + more efficient. If you assign a string to another string, the + data of both strings are shared (without any copy operation or + memory allocation) as long as you do not change the string. This class + stores also the length of the string, so that many operations are + faster as the C-str-functions. + + This class provides only readonly string handling. So you could create + a string and you could only query the content from this string. + It provides also functionality to change the string, but this results + in every case in a new string instance (in the most cases with an + memory allocation). You don't have functionality to change the + content of the string. If you want to change the string content, then + you should use the OStringBuffer class, which provides these + functionalities and avoid too much memory allocation. + + The design of this class is similar to the string classes in Java + and so more people should have fewer understanding problems when they + use this class. +*/ + +class SAL_WARN_UNUSED SAL_DLLPUBLIC_RTTI OString +{ +public: + /// @cond INTERNAL + rtl_String * pData; + /// @endcond + + /** + New string containing no characters. + */ + OString() + { + pData = NULL; + rtl_string_new( &pData ); + } + + /** + New string from OString. + + @param str an OString. + */ + OString( const OString & str ) + { + pData = str.pData; + rtl_string_acquire( pData ); + } + +#if defined LIBO_INTERNAL_ONLY + /** + Move constructor. + + @param str an OString. + @since LibreOffice 5.2 + */ + OString( OString && str ) noexcept + { + pData = str.pData; + str.pData = nullptr; + rtl_string_new( &str.pData ); + } +#endif + + /** + New string from OString data. + + @param str an OString data. + */ + OString( rtl_String * str ) + { + pData = str; + rtl_string_acquire( pData ); + } + + /** New string from OString data without acquiring it. Takeover of ownership. + + The SAL_NO_ACQUIRE dummy parameter is only there to distinguish this + from other constructors. + + @param str an OString data. + */ + OString( rtl_String * str, __sal_NoAcquire ) + { + pData = str; + } + + /** + New string from a single character. + + @param value a character. + */ + explicit OString( char value ) + : pData (NULL) + { + rtl_string_newFromStr_WithLength( &pData, &value, 1 ); + } + +#if defined LIBO_INTERNAL_ONLY && !defined RTL_STRING_UNITTEST_CONCAT + // Catch inadvertent conversions to the above ctor (e.g., from sal_[u]Int8, aka [un]signed + // char): + OString(int) = delete; +#endif + + /** + New string from a character buffer array. + + Note: The argument type is always either char* or const char*. The template is + used only for technical reasons, as is the second argument. + + @param value a NULL-terminated character array. + */ + template< typename T > + OString( const T& value, typename libreoffice_internal::CharPtrDetector< T, libreoffice_internal::Dummy >::Type = libreoffice_internal::Dummy() ) + { + pData = NULL; + rtl_string_newFromStr( &pData, value ); + } + + template< typename T > + OString( T& value, typename libreoffice_internal::NonConstCharArrayDetector< T, libreoffice_internal::Dummy >::Type = libreoffice_internal::Dummy() ) + { + pData = NULL; + rtl_string_newFromStr( &pData, value ); + } + + /** + New string from a string literal. + + If there are any embedded \0's in the string literal, the result is undefined. + Use the overload that explicitly accepts length. + + @since LibreOffice 3.6 + + @param literal a string literal + */ + template< typename T > + OString( T& literal, typename libreoffice_internal::ConstCharArrayDetector< T, libreoffice_internal::Dummy >::Type = libreoffice_internal::Dummy() ) + { + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + pData = NULL; + if (libreoffice_internal::ConstCharArrayDetector<T>::length == 0) { + rtl_string_new(&pData); + } else { + rtl_string_newFromLiteral( + &pData, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length, 0); + } +#ifdef RTL_STRING_UNITTEST + rtl_string_unittest_const_literal = true; +#endif + } + + /** + New string from a character buffer array. + + @param value a character array. + @param length the number of character which should be copied. + The character array length must be greater or + equal than this value. + */ + OString( const char * value, sal_Int32 length ) + { + pData = NULL; + rtl_string_newFromStr_WithLength( &pData, value, length ); + } + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + /// @cond INTERNAL + /** + New string from an 8-Bit string literal. + + @since LibreOffice 7.1 + */ + template<std::size_t N> constexpr OString(OStringLiteral<N> const & literal): + pData(const_cast<rtl_String *>(&literal.str)) {} + template<std::size_t N> OString(OStringLiteral<N> &&) = delete; + /// @endcond +#endif + +#if defined LIBO_INTERNAL_ONLY + explicit OString(std::string_view sv) { + if (sv.size() > sal_uInt32(std::numeric_limits<sal_Int32>::max())) { + throw std::bad_alloc(); + } + pData = nullptr; + rtl_string_newFromStr_WithLength(&pData, sv.data(), sv.size()); + } +#endif + + /** + New string from a Unicode character buffer array. + + @param value a Unicode character array. + @param length the number of character which should be converted. + The Unicode character array length must be + greater or equal than this value. + @param encoding the text encoding in which the Unicode character + sequence should be converted. + @param convertFlags flags which controls the conversion. + see RTL_UNICODETOTEXT_FLAGS_... + + @exception std::bad_alloc is thrown if an out-of-memory condition occurs + */ + OString( const sal_Unicode * value, sal_Int32 length, + rtl_TextEncoding encoding, + sal_uInt32 convertFlags = OUSTRING_TO_OSTRING_CVTFLAGS ) + { + pData = NULL; + rtl_uString2String( &pData, value, length, encoding, convertFlags ); + if (pData == NULL) { + throw std::bad_alloc(); + } + } + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + /** + @overload + @internal + */ + template< typename T1, typename T2 > + OString( OStringConcat< T1, T2 >&& c ) + { + const sal_Int32 l = c.length(); + pData = rtl_string_alloc( l ); + if (l != 0) + { + char* end = c.addData( pData->buffer ); + pData->length = l; + *end = '\0'; + } + } + + /** + @overload + @internal + */ + template< typename T > + OString( OStringNumber< T >&& n ) + : OString( n.buf, n.length ) + {} +#endif + +#ifdef LIBO_INTERNAL_ONLY + OString(std::nullptr_t) = delete; +#endif + + /** + Release the string data. + */ + ~OString() + { + rtl_string_release( pData ); + } + + /** + Assign a new string. + + @param str an OString. + */ + OString & operator=( const OString & str ) + { + rtl_string_assign( &pData, str.pData ); + return *this; + } + +#if defined LIBO_INTERNAL_ONLY + /** + Move assign a new string. + + @param str an OString. + @since LibreOffice 5.2 + */ + OString & operator=( OString && str ) noexcept + { + rtl_string_release( pData ); + pData = str.pData; + str.pData = nullptr; + rtl_string_new( &str.pData ); + return *this; + } +#endif + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, OString& >::Type operator=( T& literal ) + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + if (libreoffice_internal::ConstCharArrayDetector<T>::length == 0) { + rtl_string_new(&pData); + } else { + rtl_string_newFromLiteral( + &pData, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length, 0); + } + return *this; + } + + /** + Append a string to this string. + + @param str an OString. + */ + OString & operator+=( const OString & str ) +#if defined LIBO_INTERNAL_ONLY + & +#endif + { + rtl_string_newConcat( &pData, pData, str.pData ); + return *this; + } +#if defined LIBO_INTERNAL_ONLY + void operator+=(OString const &) && = delete; +#endif + +#if defined LIBO_INTERNAL_ONLY + template<typename T> typename libreoffice_internal::CharPtrDetector<T, OString &>::Type + operator +=(T const & value) & { return operator +=(std::string_view(value)); } + template<typename T> typename libreoffice_internal::CharPtrDetector<T, OString &>::Type + operator +=(T const &) && = delete; + + template<typename T> + typename libreoffice_internal::NonConstCharArrayDetector<T, OString &>::Type + operator +=(T & value) & { return operator +=(std::string_view(value)); } + template<typename T> + typename libreoffice_internal::NonConstCharArrayDetector<T, OString &>::Type operator +=(T &) && + = delete; + + template<typename T> typename libreoffice_internal::ConstCharArrayDetector<T, OString &>::Type + operator +=(T & literal) & { + assert(libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return operator +=( + std::string_view( + libreoffice_internal::ConstCharArrayDetector<T>::toPointer(literal), + libreoffice_internal::ConstCharArrayDetector<T>::length)); + } + template<typename T> typename libreoffice_internal::ConstCharArrayDetector<T, OString &>::Type + operator +=(T &) && = delete; + + template<std::size_t N> OString & operator +=(OStringLiteral<N> const & literal) & + { return operator +=(std::string_view(literal.getStr(), literal.getLength())); } + template<std::size_t N> void operator +=(OStringLiteral<N> const &) && = delete; + + OString & operator +=(std::string_view sv) & { + if (sv.empty()) { + return *this; + } + if (sv.size() > sal_uInt32(std::numeric_limits<sal_Int32>::max() - pData->length)) { + throw std::bad_alloc(); + } + auto const l = pData->length + sv.size(); + rtl_string_ensureCapacity(&pData, l); + *addDataHelper(pData->buffer + pData->length, sv.data(), sv.size()) = '\0'; + pData->length = l; + return *this; + } + void operator +=(std::string_view) && = delete; +#endif + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + /** + @overload + @internal + */ + template< typename T1, typename T2 > + OString& operator+=( OStringConcat< T1, T2 >&& c ) & { + sal_Int32 l = c.length(); + if( l == 0 ) + return *this; + l += pData->length; + rtl_string_ensureCapacity( &pData, l ); + char* end = c.addData( pData->buffer + pData->length ); + *end = '\0'; + pData->length = l; + return *this; + } + template<typename T1, typename T2> void operator +=( + OStringConcat<T1, T2> &&) && = delete; + + /** + @overload + @internal + */ + template< typename T > + OString& operator+=( OStringNumber< T >&& n ) & { + return operator +=(std::string_view(n.buf, n.length)); + } + template<typename T> void operator +=( + OStringNumber<T> &&) && = delete; +#endif + + /** + Clears the string, i.e, makes a zero-character string + @since LibreOffice 4.4 + */ + void clear() + { + rtl_string_new( &pData ); + } + + /** + Returns the length of this string. + + The length is equal to the number of characters in this string. + + @return the length of the sequence of characters represented by this + object. + */ + sal_Int32 getLength() const { return pData->length; } + + /** + Checks if a string is empty. + + @return true if the string is empty; + false, otherwise. + + @since LibreOffice 3.4 + */ + bool isEmpty() const + { + return pData->length == 0; + } + + /** + Returns a pointer to the characters of this string. + + <p>The returned pointer is guaranteed to point to a null-terminated byte + string. But note that this string object may contain embedded null + characters, which will thus also be embedded in the returned + null-terminated byte string.</p> + + @return a pointer to a null-terminated byte string representing the + characters of this string object. + */ + const char * getStr() const SAL_RETURNS_NONNULL { return pData->buffer; } + + /** + Access to individual characters. + + @param index must be non-negative and less than length. + + @return the character at the given index. + + @since LibreOffice 3.5 + */ + char operator [](sal_Int32 index) const { + // silence spurious -Werror=strict-overflow warnings from GCC 4.8.2 + assert(index >= 0 && static_cast<sal_uInt32>(index) < static_cast<sal_uInt32>(getLength())); + return getStr()[index]; + } + + /** + Compares two strings. + + The comparison is based on the numeric value of each character in + the strings and return a value indicating their relationship. + This function can't be used for language specific sorting. + + @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 + */ + sal_Int32 compareTo( const OString & str ) const + { + return rtl_str_compare_WithLength( pData->buffer, pData->length, + str.pData->buffer, str.pData->length ); + } + + /** + Compares two strings with an maximum count of characters. + + The comparison is based on the numeric value of each character in + the strings and return a value indicating their relationship. + This function can't be used for language specific sorting. + + @param rObj the object to be compared. + @param maxLength the maximum count of characters 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 + */ + sal_Int32 compareTo( const OString & rObj, sal_Int32 maxLength ) const + { + return rtl_str_shortenedCompare_WithLength( pData->buffer, pData->length, + rObj.pData->buffer, rObj.pData->length, maxLength ); + } + + /** + Compares two strings in reverse order. + + The comparison is based on the numeric value of each character in + the strings and return a value indicating their relationship. + This function can't be used for language specific sorting. + + @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 + */ + sal_Int32 reverseCompareTo( const OString & str ) const + { + return rtl_str_reverseCompare_WithLength( pData->buffer, pData->length, + str.pData->buffer, str.pData->length ); + } + + /** + Perform a comparison of two strings. + + The result is true if and only if second string + represents the same sequence of characters as the first string. + This function can't be used for language specific comparison. + + @param str the object to be compared. + @return true if the strings are equal; + false, otherwise. + */ + bool equals( const OString & str ) const + { + if ( pData->length != str.pData->length ) + return false; + if ( pData == str.pData ) + return true; + return rtl_str_reverseCompare_WithLength( pData->buffer, pData->length, + str.pData->buffer, str.pData->length ) == 0; + } + + /** + Perform a comparison of two strings. + + The result is true if and only if second string + represents the same sequence of characters as the first string. + The ASCII string must be NULL-terminated and must be greater or + equal as length. + This function can't be used for language specific comparison. + + + @param value a character array. + @param length the length of the character array. + @return true if the strings are equal; + false, otherwise. + */ + bool equalsL( const char* value, sal_Int32 length ) const + { + if ( pData->length != length ) + return false; + + return rtl_str_reverseCompare_WithLength( pData->buffer, pData->length, + value, length ) == 0; + } + + /** + Perform an ASCII lowercase comparison of two strings. + + The result is true if and only if second string + represents the same sequence of characters as the first string, + ignoring the case. + Character values between 65 and 90 (ASCII A-Z) are interpreted as + values between 97 and 122 (ASCII a-z). + This function can't be used for language specific comparison. + + @param str the object to be compared. + @return true if the strings are equal; + false, otherwise. + */ +#if defined LIBO_INTERNAL_ONLY + bool equalsIgnoreAsciiCase( std::string_view str ) const + { + if ( sal_uInt32(pData->length) != str.size() ) + return false; + if ( pData->buffer == str.data() ) + return true; + return rtl_str_compareIgnoreAsciiCase_WithLength( pData->buffer, pData->length, + str.data(), str.size() ) == 0; + } +#else + bool equalsIgnoreAsciiCase( const OString & str ) const + { + if ( pData->length != str.pData->length ) + return false; + if ( pData == str.pData ) + return true; + return rtl_str_compareIgnoreAsciiCase_WithLength( pData->buffer, pData->length, + str.pData->buffer, str.pData->length ) == 0; + } +#endif + + /** + Perform an ASCII lowercase comparison of two strings. + + The result is true if and only if second string + represents the same sequence of characters as the first string, + ignoring the case. + Character values between 65 and 90 (ASCII A-Z) are interpreted as + values between 97 and 122 (ASCII a-z). + Since this method is optimized for performance, the ASCII character + values are not converted in any way. The caller has to make sure that + all ASCII characters are in the allowed range between 0 and + 127. The ASCII string must be NULL-terminated. + This function can't be used for language specific comparison. + + Note: The argument type is always either char* or const char*, the return type is bool. + The template is used only for technical reasons. + + @param asciiStr the 8-Bit ASCII character string to be compared. + @return true if the strings are equal; + false, otherwise. + */ + template< typename T > + typename libreoffice_internal::CharPtrDetector< T, bool >::Type equalsIgnoreAsciiCase( const T& asciiStr ) const + { + return rtl_str_compareIgnoreAsciiCase( pData->buffer, asciiStr ) == 0; + } + + template< typename T > + typename libreoffice_internal::NonConstCharArrayDetector< T, bool >::Type equalsIgnoreAsciiCase( T& asciiStr ) const + { + return rtl_str_compareIgnoreAsciiCase( pData->buffer, asciiStr ) == 0; + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type equalsIgnoreAsciiCase( T& literal ) const + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return + (pData->length + == libreoffice_internal::ConstCharArrayDetector<T>::length) + && (rtl_str_compareIgnoreAsciiCase_WithLength( + pData->buffer, pData->length, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length) + == 0); + } + + /** + Perform an ASCII lowercase comparison of two strings. + + The result is true if and only if second string + represents the same sequence of characters as the first string, + ignoring the case. + Character values between 65 and 90 (ASCII A-Z) are interpreted as + values between 97 and 122 (ASCII a-z). + Since this method is optimized for performance, the ASCII character + values are not converted in any way. The caller has to make sure that + all ASCII characters are in the allowed range between 0 and + 127. The ASCII string must be greater or equal in length as asciiStrLength. + This function can't be used for language specific comparison. + + @param asciiStr the 8-Bit ASCII character string to be compared. + @param asciiStrLength the length of the ascii string + @return true if the strings are equal; + false, otherwise. + */ + bool equalsIgnoreAsciiCaseL( const char * asciiStr, sal_Int32 asciiStrLength ) const + { + if ( pData->length != asciiStrLength ) + return false; + + return rtl_str_compareIgnoreAsciiCase_WithLength( pData->buffer, pData->length, + asciiStr, asciiStrLength ) == 0; + } + + /** + Match against a substring appearing in this string. + + The result is true if and only if the second string appears as a substring + of this string, at the given position. + This function can't be used for language specific comparison. + + @param str the object (substring) to be compared. + @param fromIndex the index to start the comparison from. + The index must be greater or equal than 0 + and less or equal as the string length. + @return true if str match with the characters in the string + at the given position; + false, otherwise. + */ +#if defined LIBO_INTERNAL_ONLY + bool match( std::string_view str, sal_Int32 fromIndex = 0 ) const + { + return rtl_str_shortenedCompare_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, + str.data(), str.size(), str.size() ) == 0; + } +#else + bool match( const OString & str, sal_Int32 fromIndex = 0 ) const + { + return rtl_str_shortenedCompare_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, + str.pData->buffer, str.pData->length, str.pData->length ) == 0; + } +#endif + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type match( T& literal, sal_Int32 fromIndex = 0 ) const + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return + rtl_str_shortenedCompare_WithLength( + pData->buffer + fromIndex, pData->length - fromIndex, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length, + libreoffice_internal::ConstCharArrayDetector<T>::length) + == 0; + } + + /** + Match against a substring appearing in this string. + + @param str the substring to be compared; must not be null and must point + to memory of at least strLength bytes + + @param strLength the length of the substring; must be non-negative + + @param fromIndex the index into this string to start the comparison at; + must be non-negative and not greater than this string's length + + @return true if and only if the given str is contained as a substring of + this string at the given fromIndex + + @since LibreOffice 3.6 + */ + bool matchL( + char const * str, sal_Int32 strLength, sal_Int32 fromIndex = 0) + const + { + return rtl_str_shortenedCompare_WithLength( + pData->buffer + fromIndex, pData->length - fromIndex, + str, strLength, strLength) == 0; + } + + // This overload is left undefined, to detect calls of matchL that + // erroneously use RTL_CONSTASCII_USTRINGPARAM instead of + // RTL_CONSTASCII_STRINGPARAM (but would lead to ambiguities on 32 bit + // platforms): +#if SAL_TYPES_SIZEOFLONG == 8 + void matchL(char const *, sal_Int32, rtl_TextEncoding) const; +#endif + + /** + Match against a substring appearing in this string, ignoring the case of + ASCII letters. + + The result is true if and only if the second string appears as a substring + of this string, at the given position. + Character values between 65 and 90 (ASCII A-Z) are interpreted as + values between 97 and 122 (ASCII a-z). + This function can't be used for language specific comparison. + + @param str the object (substring) to be compared. + @param fromIndex the index to start the comparison from. + The index must be greater or equal than 0 + and less or equal as the string length. + @return true if str match with the characters in the string + at the given position; + false, otherwise. + */ +#if defined LIBO_INTERNAL_ONLY + bool matchIgnoreAsciiCase( std::string_view str, sal_Int32 fromIndex = 0 ) const + { + return rtl_str_shortenedCompareIgnoreAsciiCase_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, + str.data(), str.size(), + str.size() ) == 0; + } +#else + bool matchIgnoreAsciiCase( const OString & str, sal_Int32 fromIndex = 0 ) const + { + return rtl_str_shortenedCompareIgnoreAsciiCase_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, + str.pData->buffer, str.pData->length, + str.pData->length ) == 0; + } +#endif + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type matchIgnoreAsciiCase( T& literal, sal_Int32 fromIndex = 0 ) const + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return + rtl_str_shortenedCompareIgnoreAsciiCase_WithLength( + pData->buffer+fromIndex, pData->length-fromIndex, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length, + libreoffice_internal::ConstCharArrayDetector<T>::length) + == 0; + } + + /** + Check whether this string starts with a given substring. + + @param str the substring to be compared + + @param rest if non-null, and this function returns true, then assign a + copy of the remainder of this string to *rest. Available since + LibreOffice 4.2 + + @return true if and only if the given str appears as a substring at the + start of this string + + @since LibreOffice 4.0 + */ +#if defined LIBO_INTERNAL_ONLY + bool startsWith(std::string_view str, OString * rest = NULL) const { + bool b = match(str); + if (b && rest != NULL) { + *rest = copy(str.size()); + } + return b; + } +#else + bool startsWith(OString const & str, OString * rest = NULL) const { + bool b = match(str); + if (b && rest != NULL) { + *rest = copy(str.getLength()); + } + return b; + } +#endif + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 4.0 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type startsWith( + T & literal, OString * rest = NULL) const + { + RTL_STRING_CONST_FUNCTION + bool b = match(literal, 0); + if (b && rest != NULL) { + *rest = copy( + libreoffice_internal::ConstCharArrayDetector<T>::length); + } + return b; + } + + /** + Check whether this string starts with a given string, ignoring the case of + ASCII letters. + + Character values between 65 and 90 (ASCII A-Z) are interpreted as + values between 97 and 122 (ASCII a-z). + This function can't be used for language specific comparison. + + @param str the substring to be compared + + @param rest if non-null, and this function returns true, then assign a + copy of the remainder of this string to *rest. + + @return true if and only if the given str appears as a substring at the + start of this string, ignoring the case of ASCII letters ("A"--"Z" and + "a"--"z") + + @since LibreOffice 5.1 + */ +#if defined LIBO_INTERNAL_ONLY + bool startsWithIgnoreAsciiCase(std::string_view str, OString * rest = NULL) + const + { + bool b = matchIgnoreAsciiCase(str); + if (b && rest != NULL) { + *rest = copy(str.size()); + } + return b; + } +#else + bool startsWithIgnoreAsciiCase(OString const & str, OString * rest = NULL) + const + { + bool b = matchIgnoreAsciiCase(str); + if (b && rest != NULL) { + *rest = copy(str.getLength()); + } + return b; + } +#endif + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 5.1 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type + startsWithIgnoreAsciiCase(T & literal, OString * rest = NULL) const + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + bool b = matchIgnoreAsciiCase(literal); + if (b && rest != NULL) { + *rest = copy( + libreoffice_internal::ConstCharArrayDetector<T>::length); + } + return b; + } + + /** + Check whether this string ends with a given substring. + + @param str the substring to be compared + + @param rest if non-null, and this function returns true, then assign a + copy of the remainder of this string to *rest. Available since + LibreOffice 4.2 + + @return true if and only if the given str appears as a substring at the + end of this string + + @since LibreOffice 3.6 + */ +#if defined LIBO_INTERNAL_ONLY + bool endsWith(std::string_view str, OString * rest = NULL) const { + bool b = str.size() <= sal_uInt32(getLength()) + && match(str, getLength() - str.size()); + if (b && rest != NULL) { + *rest = copy(0, getLength() - str.size()); + } + return b; + } +#else + bool endsWith(OString const & str, OString * rest = NULL) const { + bool b = str.getLength() <= getLength() + && match(str, getLength() - str.getLength()); + if (b && rest != NULL) { + *rest = copy(0, getLength() - str.getLength()); + } + return b; + } +#endif + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type endsWith( + T & literal, OString * rest = NULL) const + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + bool b + = (libreoffice_internal::ConstCharArrayDetector<T>::length + <= sal_uInt32(getLength())) + && match( + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + (getLength() + - libreoffice_internal::ConstCharArrayDetector<T>::length)); + if (b && rest != NULL) { + *rest = copy( + 0, + (getLength() + - libreoffice_internal::ConstCharArrayDetector<T>::length)); + } + return b; + } + + /** + Check whether this string ends with a given substring. + + @param str the substring to be compared; must not be null and must point + to memory of at least strLength bytes + + @param strLength the length of the substring; must be non-negative + + @return true if and only if the given str appears as a substring at the + end of this string + + @since LibreOffice 3.6 + */ + bool endsWithL(char const * str, sal_Int32 strLength) const { + return strLength <= getLength() + && matchL(str, strLength, getLength() - strLength); + } + + friend bool operator == ( const OString& rStr1, const OString& rStr2 ) + { return rStr1.equals(rStr2); } + friend bool operator != ( const OString& rStr1, const OString& rStr2 ) + { return !(operator == ( rStr1, rStr2 )); } + friend bool operator < ( const OString& rStr1, const OString& rStr2 ) + { return rStr1.compareTo( rStr2 ) < 0; } + friend bool operator > ( const OString& rStr1, const OString& rStr2 ) + { return rStr1.compareTo( rStr2 ) > 0; } + friend bool operator <= ( const OString& rStr1, const OString& rStr2 ) + { return rStr1.compareTo( rStr2 ) <= 0; } + friend bool operator >= ( const OString& rStr1, const OString& rStr2 ) + { return rStr1.compareTo( rStr2 ) >= 0; } + + template< typename T > + friend typename libreoffice_internal::CharPtrDetector< T, bool >::Type operator==( const OString& rStr1, const T& value ) + { + return + rtl_str_compare_WithLength( + rStr1.getStr(), rStr1.getLength(), value, rtl_str_getLength(value)) + == 0; + } + + template< typename T > + friend typename libreoffice_internal::NonConstCharArrayDetector< T, bool >::Type operator==( const OString& rStr1, T& value ) + { + return + rtl_str_compare_WithLength( + rStr1.getStr(), rStr1.getLength(), value, rtl_str_getLength(value)) + == 0; + } + + template< typename T > + friend typename libreoffice_internal::CharPtrDetector< T, bool >::Type operator==( const T& value, const OString& rStr2 ) + { + return + rtl_str_compare_WithLength( + value, rtl_str_getLength(value), rStr2.getStr(), rStr2.getLength()) + == 0; + } + + template< typename T > + friend typename libreoffice_internal::NonConstCharArrayDetector< T, bool >::Type operator==( T& value, const OString& rStr2 ) + { + return + rtl_str_compare_WithLength( + value, rtl_str_getLength(value), rStr2.getStr(), rStr2.getLength()) + == 0; + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + friend typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type operator==( const OString& rStr, T& literal ) + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return + (rStr.getLength() + == libreoffice_internal::ConstCharArrayDetector<T>::length) + && (rtl_str_compare_WithLength( + rStr.pData->buffer, rStr.pData->length, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length) + == 0); + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + friend typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type operator==( T& literal, const OString& rStr ) + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return + (rStr.getLength() + == libreoffice_internal::ConstCharArrayDetector<T>::length) + && (rtl_str_compare_WithLength( + rStr.pData->buffer, rStr.pData->length, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer( + literal), + libreoffice_internal::ConstCharArrayDetector<T>::length) + == 0); + } + + template< typename T > + friend typename libreoffice_internal::CharPtrDetector< T, bool >::Type operator!=( const OString& rStr1, const T& value ) + { + return !(operator == ( rStr1, value )); + } + + template< typename T > + friend typename libreoffice_internal::NonConstCharArrayDetector< T, bool >::Type operator!=( const OString& rStr1, T& value ) + { + return !(operator == ( rStr1, value )); + } + + template< typename T > + friend typename libreoffice_internal::CharPtrDetector< T, bool >::Type operator!=( const T& value, const OString& rStr2 ) + { + return !(operator == ( value, rStr2 )); + } + + template< typename T > + friend typename libreoffice_internal::NonConstCharArrayDetector< T, bool >::Type operator!=( T& value, const OString& rStr2 ) + { + return !(operator == ( value, rStr2 )); + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + friend typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type operator!=( const OString& rStr, T& literal ) + { + return !( rStr == literal ); + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + friend typename libreoffice_internal::ConstCharArrayDetector< T, bool >::Type operator!=( T& literal, const OString& rStr ) + { + return !( literal == rStr ); + } + + /** + Returns a hashcode for this string. + + @return a hash code value for this object. + + @see rtl::OStringHash for convenient use of std::unordered_map + */ + sal_Int32 hashCode() const + { + return rtl_str_hashCode_WithLength( pData->buffer, pData->length ); + } + + /** + Returns the index within this string of the first occurrence of the + specified character, starting the search at the specified index. + + @param ch character to be located. + @param fromIndex the index to start the search from. + The index must be greater or equal than 0 + and less or equal as the string length. + @return the index of the first occurrence of the character in the + character sequence represented by this string that is + greater than or equal to fromIndex, or + -1 if the character does not occur. + */ + sal_Int32 indexOf( char ch, sal_Int32 fromIndex = 0 ) const + { + sal_Int32 ret = rtl_str_indexOfChar_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, ch ); + return (ret < 0 ? ret : ret+fromIndex); + } + + /** + Returns the index within this string of the last occurrence of the + specified character, searching backward starting at the end. + + @param ch character to be located. + @return the index of the last occurrence of the character in the + character sequence represented by this string, or + -1 if the character does not occur. + */ + sal_Int32 lastIndexOf( char ch ) const + { + return rtl_str_lastIndexOfChar_WithLength( pData->buffer, pData->length, ch ); + } + + /** + Returns the index within this string of the last occurrence of the + specified character, searching backward starting before the specified + index. + + @param ch character to be located. + @param fromIndex the index before which to start the search. + @return the index of the last occurrence of the character in the + character sequence represented by this string that + is less than fromIndex, or -1 + if the character does not occur before that point. + */ + sal_Int32 lastIndexOf( char ch, sal_Int32 fromIndex ) const + { + return rtl_str_lastIndexOfChar_WithLength( pData->buffer, fromIndex, ch ); + } + + /** + Returns the index within this string of the first occurrence of the + specified substring, starting at the specified index. + + If str doesn't include any character, always -1 is + returned. This is also the case, if both strings are empty. + + @param str the substring to search for. + @param fromIndex the index to start the search from. + @return If the string argument occurs one or more times as a substring + within this string at the starting index, then the index + of the first character of the first such substring is + returned. If it does not occur as a substring starting + at fromIndex or beyond, -1 is returned. + */ +#if defined LIBO_INTERNAL_ONLY + sal_Int32 indexOf( std::string_view str, sal_Int32 fromIndex = 0 ) const + { + sal_Int32 ret = rtl_str_indexOfStr_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, + str.data(), str.size() ); + return (ret < 0 ? ret : ret+fromIndex); + } +#else + sal_Int32 indexOf( const OString & str, sal_Int32 fromIndex = 0 ) const + { + sal_Int32 ret = rtl_str_indexOfStr_WithLength( pData->buffer+fromIndex, pData->length-fromIndex, + str.pData->buffer, str.pData->length ); + return (ret < 0 ? ret : ret+fromIndex); + } +#endif + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, sal_Int32 >::Type indexOf( T& literal, sal_Int32 fromIndex = 0 ) const + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + sal_Int32 n = rtl_str_indexOfStr_WithLength( + pData->buffer + fromIndex, pData->length - fromIndex, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer(literal), + libreoffice_internal::ConstCharArrayDetector<T>::length); + return n < 0 ? n : n + fromIndex; + } + + /** + Returns the index within this string of the first occurrence of the + specified substring, starting at the specified index. + + If str doesn't include any character, always -1 is + returned. This is also the case, if both strings are empty. + + @param str the substring to search for. + @param len the length of the substring. + @param fromIndex the index to start the search from. + @return If the string argument occurs one or more times as a substring + within this string at the starting index, then the index + of the first character of the first such substring is + returned. If it does not occur as a substring starting + at fromIndex or beyond, -1 is returned. + + @since LibreOffice 3.6 + */ + sal_Int32 indexOfL(char const * str, sal_Int32 len, sal_Int32 fromIndex = 0) + const + { + sal_Int32 n = rtl_str_indexOfStr_WithLength( + pData->buffer + fromIndex, pData->length - fromIndex, str, len); + return n < 0 ? n : n + fromIndex; + } + + // This overload is left undefined, to detect calls of indexOfL that + // erroneously use RTL_CONSTASCII_USTRINGPARAM instead of + // RTL_CONSTASCII_STRINGPARAM (but would lead to ambiguities on 32 bit + // platforms): +#if SAL_TYPES_SIZEOFLONG == 8 + void indexOfL(char const *, sal_Int32, rtl_TextEncoding) const; +#endif + + /** + Returns the index within this string of the last occurrence of + the specified substring, searching backward starting at the end. + + The returned index indicates the starting index of the substring + in this string. + If str doesn't include any character, always -1 is + returned. This is also the case, if both strings are empty. + + @param str the substring to search for. + @return If the string argument occurs one or more times as a substring + within this string, then the index of the first character of + the last such substring is returned. If it does not occur as + a substring, -1 is returned. + */ +#if defined LIBO_INTERNAL_ONLY + sal_Int32 lastIndexOf( std::string_view str ) const + { + return rtl_str_lastIndexOfStr_WithLength( pData->buffer, pData->length, + str.data(), str.size() ); + } +#else + sal_Int32 lastIndexOf( const OString & str ) const + { + return rtl_str_lastIndexOfStr_WithLength( pData->buffer, pData->length, + str.pData->buffer, str.pData->length ); + } +#endif + + /** + Returns the index within this string of the last occurrence of + the specified substring, searching backward starting before the specified + index. + + The returned index indicates the starting index of the substring + in this string. + If str doesn't include any character, always -1 is + returned. This is also the case, if both strings are empty. + + @param str the substring to search for. + @param fromIndex the index before which to start the search. + @return If the string argument occurs one or more times as a substring + within this string before the starting index, then the index + of the first character of the last such substring is + returned. Otherwise, -1 is returned. + */ +#if defined LIBO_INTERNAL_ONLY + sal_Int32 lastIndexOf( std::string_view str, sal_Int32 fromIndex ) const + { + return rtl_str_lastIndexOfStr_WithLength( pData->buffer, fromIndex, + str.data(), str.size() ); + } +#else + sal_Int32 lastIndexOf( const OString & str, sal_Int32 fromIndex ) const + { + return rtl_str_lastIndexOfStr_WithLength( pData->buffer, fromIndex, + str.pData->buffer, str.pData->length ); + } +#endif + + /** + Returns a new string that is a substring of this string. + + The substring begins at the specified beginIndex. If + beginIndex is negative or be greater than the length of + this string, behaviour is undefined. + + @param beginIndex the beginning index, inclusive. + @return the specified substring. + */ + SAL_WARN_UNUSED_RESULT OString copy( sal_Int32 beginIndex ) const + { + return copy(beginIndex, getLength() - beginIndex); + } + + /** + Returns a new string that is a substring of this string. + + The substring begins at the specified beginIndex and contains count + characters. If either beginIndex or count are negative, + or beginIndex + count are greater than the length of this string + then behaviour is undefined. + + @param beginIndex the beginning index, inclusive. + @param count the number of characters. + @return the specified substring. + */ + SAL_WARN_UNUSED_RESULT OString copy( sal_Int32 beginIndex, sal_Int32 count ) const + { + rtl_String *pNew = NULL; + rtl_string_newFromSubString( &pNew, pData, beginIndex, count ); + return OString( pNew, SAL_NO_ACQUIRE ); + } + +#if defined LIBO_INTERNAL_ONLY + /** + Returns a std::string_view that is a view of a substring of this string. + + The substring begins at the specified beginIndex. If + beginIndex is negative or be greater than the length of + this string, behaviour is undefined. + + @param beginIndex the beginning index, inclusive. + @return the specified substring. + */ + SAL_WARN_UNUSED_RESULT std::string_view subView( sal_Int32 beginIndex ) const + { + assert(beginIndex >= 0); + assert(beginIndex <= getLength()); + return subView(beginIndex, getLength() - beginIndex); + } + + /** + Returns a std::string_view that is a view of a substring of this string. + + The substring begins at the specified beginIndex and contains count + characters. If either beginIndex or count are negative, + or beginIndex + count are greater than the length of this string + then behaviour is undefined. + + @param beginIndex the beginning index, inclusive. + @param count the number of characters. + @return the specified substring. + */ + SAL_WARN_UNUSED_RESULT std::string_view subView( sal_Int32 beginIndex, sal_Int32 count ) const + { + assert(beginIndex >= 0); + assert(count >= 0); + assert(beginIndex <= getLength()); + assert(count <= getLength() - beginIndex); + return std::string_view(*this).substr(beginIndex, count); + } +#endif + +#ifndef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + /** + Concatenates the specified string to the end of this string. + + @param str the string that is concatenated to the end + of this string. + @return a string that represents the concatenation of this string + followed by the string argument. + */ + SAL_WARN_UNUSED_RESULT OString concat( const OString & str ) const + { + rtl_String* pNew = NULL; + rtl_string_newConcat( &pNew, pData, str.pData ); + return OString( pNew, SAL_NO_ACQUIRE ); + } +#endif + +#ifndef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + friend OString operator+( const OString & str1, const OString & str2 ) + { + return str1.concat( str2 ); + } +#endif + +// hide this from internal code to avoid ambiguous lookup error +#ifndef LIBO_INTERNAL_ONLY + /** + Returns a new string resulting from replacing n = count characters + from position index in this string with newStr. + + @param index the replacing index in str. + The index must be greater or equal as 0 and + less or equal as the length of the string. + @param count the count of characters that will replaced + The count must be greater or equal as 0 and + less or equal as the length of the string minus index. + @param newStr the new substring. + @return the new string. + */ + SAL_WARN_UNUSED_RESULT OString replaceAt( sal_Int32 index, sal_Int32 count, const OString& newStr ) const + { + rtl_String* pNew = NULL; + rtl_string_newReplaceStrAt( &pNew, pData, index, count, newStr.pData ); + return OString( pNew, SAL_NO_ACQUIRE ); + } +#endif + +#ifdef LIBO_INTERNAL_ONLY + SAL_WARN_UNUSED_RESULT OString replaceAt( sal_Int32 index, sal_Int32 count, std::string_view newStr ) const + { + rtl_String* pNew = NULL; + rtl_string_newReplaceStrAt_WithLength ( &pNew, pData, index, count, newStr.data(), newStr.size() ); + return OString( pNew, SAL_NO_ACQUIRE ); + } +#endif + + /** + Returns a new string resulting from replacing all occurrences of + oldChar in this string with newChar. + + If the character oldChar does not occur in the character sequence + represented by this object, then the string is assigned with + str. + + @param oldChar the old character. + @param newChar the new character. + @return a string derived from this string by replacing every + occurrence of oldChar with newChar. + */ + SAL_WARN_UNUSED_RESULT OString replace( char oldChar, char newChar ) const + { + rtl_String* pNew = NULL; + rtl_string_newReplace( &pNew, pData, oldChar, newChar ); + return OString( pNew, SAL_NO_ACQUIRE ); + } + + /** + Returns a new string resulting from replacing the first occurrence of a + given substring with another substring. + + @param from the substring to be replaced + + @param to the replacing substring + + @param[in,out] index pointer to a start index; if the pointer is + non-null: upon entry to the function, its value is the index into the this + string at which to start searching for the \p from substring, the value + must be non-negative and not greater than this string's length; upon exit + from the function its value is the index into this string at which the + replacement took place or -1 if no replacement took place; if the pointer + is null, searching always starts at index 0 + + @since LibreOffice 3.6 + */ + SAL_WARN_UNUSED_RESULT OString replaceFirst( + OString const & from, OString const & to, sal_Int32 * index = NULL) const + { + rtl_String * s = NULL; + sal_Int32 i = 0; + rtl_string_newReplaceFirst( + &s, pData, from.pData->buffer, from.pData->length, + to.pData->buffer, to.pData->length, index == NULL ? &i : index); + return OString(s, SAL_NO_ACQUIRE); + } + + /** + Returns a new string resulting from replacing all occurrences of a given + substring with another substring. + + Replacing subsequent occurrences picks up only after a given replacement. + That is, replacing from "xa" to "xx" in "xaa" results in "xxa", not "xxx". + + @param from the substring to be replaced + + @param to the replacing substring + + @since LibreOffice 3.6 + */ + SAL_WARN_UNUSED_RESULT OString replaceAll(OString const & from, OString const & to) const { + rtl_String * s = NULL; + rtl_string_newReplaceAll( + &s, pData, from.pData->buffer, from.pData->length, + to.pData->buffer, to.pData->length); + return OString(s, SAL_NO_ACQUIRE); + } + + /** + Converts from this string all ASCII uppercase characters (65-90) + to ASCII lowercase characters (97-122). + + This function can't be used for language specific conversion. + If the string doesn't contain characters which must be converted, + then the new string is assigned with str. + + @return the string, converted to ASCII lowercase. + */ + SAL_WARN_UNUSED_RESULT OString toAsciiLowerCase() const + { + rtl_String* pNew = NULL; + rtl_string_newToAsciiLowerCase( &pNew, pData ); + return OString( pNew, SAL_NO_ACQUIRE ); + } + + /** + Converts from this string all ASCII lowercase characters (97-122) + to ASCII uppercase characters (65-90). + + This function can't be used for language specific conversion. + If the string doesn't contain characters which must be converted, + then the new string is assigned with str. + + @return the string, converted to ASCII uppercase. + */ + SAL_WARN_UNUSED_RESULT OString toAsciiUpperCase() const + { + rtl_String* pNew = NULL; + rtl_string_newToAsciiUpperCase( &pNew, pData ); + return OString( pNew, SAL_NO_ACQUIRE ); + } + + /** + Returns a new string resulting from removing white space from both ends + of the string. + + All characters that have codes less than or equal to + 32 (the space character) are considered to be white space. + If the string doesn't contain white spaces at both ends, + then the new string is assigned with str. + + @return the string, with white space removed from the front and end. + */ + SAL_WARN_UNUSED_RESULT OString trim() const + { + rtl_String* pNew = NULL; + rtl_string_newTrim( &pNew, pData ); + return OString( pNew, SAL_NO_ACQUIRE ); + } + + /** + Returns a token in the string. + + Example: + sal_Int32 nIndex = 0; + do + { + ... + OString aToken = aStr.getToken( 0, ';', nIndex ); + ... + } + while ( nIndex >= 0 ); + + @param token the number of the token to return. + @param cTok the character which separate the tokens. + @param index the position at which the token is searched in the + string. + The index must not be greater than the length of the + string. + This param is set to the position of the + next token or to -1, if it is the last token. + @return the token; if either token or index is negative, an empty token + is returned (and index is set to -1) + */ + OString getToken( sal_Int32 token, char cTok, sal_Int32& index ) const + { + rtl_String * pNew = NULL; + index = rtl_string_getToken( &pNew, pData, token, cTok, index ); + return OString( pNew, SAL_NO_ACQUIRE ); + } + + /** + Returns a token from the string. + + The same as getToken(sal_Int32, char, sal_Int32 &), but always passing + in 0 as the start index in the third argument. + + @param count the number of the token to return, starting with 0 + @param separator the character which separates the tokens + + @return the given token, or an empty string + + @since LibreOffice 3.6 + */ + OString getToken(sal_Int32 count, char separator) const { + sal_Int32 n = 0; + return getToken(count, separator, n); + } + + /** + Returns the Boolean value from this string. + + This function can't be used for language specific conversion. + + @return true, if the string is 1 or "True" in any ASCII case. + false in any other case. + */ + bool toBoolean() const + { + return rtl_str_toBoolean( pData->buffer ); + } + + /** + Returns the first character from this string. + + @return the first character from this string or 0, if this string + is empty. + */ + char toChar() const + { + return pData->buffer[0]; + } + + /** + Returns the int32 value from this string. + + This function can't be used for language specific conversion. + + @param radix the radix (between 2 and 36) + @return the int32 represented from this string. + 0 if this string represents no number or one of too large + magnitude. + */ + sal_Int32 toInt32( sal_Int16 radix = 10 ) const + { + return rtl_str_toInt32( pData->buffer, radix ); + } + + /** + Returns the uint32 value from this string. + + This function can't be used for language specific conversion. + + @param radix the radix (between 2 and 36) + @return the uint32 represented from this string. + 0 if this string represents no number or one of too large + magnitude. + + @since LibreOffice 4.2 + */ + sal_uInt32 toUInt32( sal_Int16 radix = 10 ) const + { + return rtl_str_toUInt32( pData->buffer, radix ); + } + + /** + Returns the int64 value from this string. + + This function can't be used for language specific conversion. + + @param radix the radix (between 2 and 36) + @return the int64 represented from this string. + 0 if this string represents no number or one of too large + magnitude. + */ + sal_Int64 toInt64( sal_Int16 radix = 10 ) const + { + return rtl_str_toInt64( pData->buffer, radix ); + } + + /** + Returns the uint64 value from this string. + + This function can't be used for language specific conversion. + + @param radix the radix (between 2 and 36) + @return the uint64 represented from this string. + 0 if this string represents no number or one of too large + magnitude. + + @since LibreOffice 4.1 + */ + sal_uInt64 toUInt64( sal_Int16 radix = 10 ) const + { + return rtl_str_toUInt64( pData->buffer, radix ); + } + + /** + Returns the float value from this string. + + This function can't be used for language specific conversion. + + @return the float represented from this string. + 0.0 if this string represents no number. + */ + float toFloat() const + { + return rtl_str_toFloat( pData->buffer ); + } + + /** + Returns the double value from this string. + + This function can't be used for language specific conversion. + + @return the double represented from this string. + 0.0 if this string represents no number. + */ + double toDouble() const + { + return rtl_str_toDouble( pData->buffer ); + } + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + + static OStringNumber< int > number( int i, sal_Int16 radix = 10 ) + { + return OStringNumber< int >( i, radix ); + } + static OStringNumber< long long > number( long long ll, sal_Int16 radix = 10 ) + { + return OStringNumber< long long >( ll, radix ); + } + static OStringNumber< unsigned long long > number( unsigned long long ll, sal_Int16 radix = 10 ) + { + return OStringNumber< unsigned long long >( ll, radix ); + } + static OStringNumber< unsigned long long > number( unsigned int i, sal_Int16 radix = 10 ) + { + return number( static_cast< unsigned long long >( i ), radix ); + } + static OStringNumber< long long > number( long i, sal_Int16 radix = 10) + { + return number( static_cast< long long >( i ), radix ); + } + static OStringNumber< unsigned long long > number( unsigned long i, sal_Int16 radix = 10 ) + { + return number( static_cast< unsigned long long >( i ), radix ); + } + static OStringNumber< float > number( float f ) + { + return OStringNumber< float >( f ); + } + static OStringNumber< double > number( double d ) + { + return OStringNumber< double >( d ); + } +#else + /** + Returns the string representation of the integer argument. + + This function can't be used for language specific conversion. + + @param i an integer value + @param radix the radix (between 2 and 36) + @return a string with the string representation of the argument. + @since LibreOffice 4.1 + */ + static OString number( int i, sal_Int16 radix = 10 ) + { + char aBuf[RTL_STR_MAX_VALUEOFINT32]; + return OString(aBuf, rtl_str_valueOfInt32(aBuf, i, radix)); + } + /// @overload + /// @since LibreOffice 4.1 + static OString number( unsigned int i, sal_Int16 radix = 10 ) + { + return number( static_cast< unsigned long long >( i ), radix ); + } + /// @overload + /// @since LibreOffice 4.1 + static OString number( long i, sal_Int16 radix = 10 ) + { + return number( static_cast< long long >( i ), radix ); + } + /// @overload + /// @since LibreOffice 4.1 + static OString number( unsigned long i, sal_Int16 radix = 10 ) + { + return number( static_cast< unsigned long long >( i ), radix ); + } + /// @overload + /// @since LibreOffice 4.1 + static OString number( long long ll, sal_Int16 radix = 10 ) + { + char aBuf[RTL_STR_MAX_VALUEOFINT64]; + return OString(aBuf, rtl_str_valueOfInt64(aBuf, ll, radix)); + } + /// @overload + /// @since LibreOffice 4.1 + static OString number( unsigned long long ll, sal_Int16 radix = 10 ) + { + char aBuf[RTL_STR_MAX_VALUEOFUINT64]; + return OString(aBuf, rtl_str_valueOfUInt64(aBuf, ll, radix)); + } + + /** + Returns the string representation of the float argument. + + This function can't be used for language specific conversion. + + @param f a float. + @return a string with the decimal representation of the argument. + @since LibreOffice 4.1 + */ + static OString number( float f ) + { + char aBuf[RTL_STR_MAX_VALUEOFFLOAT]; + return OString(aBuf, rtl_str_valueOfFloat(aBuf, f)); + } + + /** + Returns the string representation of the double argument. + + This function can't be used for language specific conversion. + + @param d a double. + @return a string with the decimal representation of the argument. + @since LibreOffice 4.1 + */ + static OString number( double d ) + { + char aBuf[RTL_STR_MAX_VALUEOFDOUBLE]; + return OString(aBuf, rtl_str_valueOfDouble(aBuf, d)); + } +#endif + + /** + Returns the string representation of the sal_Bool argument. + + If the sal_Bool is true, the string "true" is returned. + If the sal_Bool is false, the string "false" is returned. + This function can't be used for language specific conversion. + + @param b a sal_Bool. + @return a string with the string representation of the argument. + @deprecated use boolean() + */ + SAL_DEPRECATED("use boolean()") static OString valueOf( sal_Bool b ) + { + return boolean(b); + } + + /** + Returns the string representation of the boolean argument. + + If the argument is true, the string "true" is returned. + If the argument is false, the string "false" is returned. + This function can't be used for language specific conversion. + + @param b a bool. + @return a string with the string representation of the argument. + @since LibreOffice 4.1 + */ + static OString boolean( bool b ) + { + char aBuf[RTL_STR_MAX_VALUEOFBOOLEAN]; + return OString(aBuf, rtl_str_valueOfBoolean(aBuf, b)); + } + + /** + Returns the string representation of the char argument. + + @param c a character. + @return a string with the string representation of the argument. + @deprecated use operator, function or constructor taking char or sal_Unicode argument + */ + SAL_DEPRECATED("convert to OString or use directly") static OString valueOf( char c ) + { + return OString( &c, 1 ); + } + + /** + Returns the string representation of the int argument. + + This function can't be used for language specific conversion. + + @param i a int32. + @param radix the radix (between 2 and 36) + @return a string with the string representation of the argument. + @deprecated use number() + */ + SAL_DEPRECATED("use number()") static OString valueOf( sal_Int32 i, sal_Int16 radix = 10 ) + { + return number( i, radix ); + } + + /** + Returns the string representation of the long argument. + + This function can't be used for language specific conversion. + + @param ll a int64. + @param radix the radix (between 2 and 36) + @return a string with the string representation of the argument. + @deprecated use number() + */ + SAL_DEPRECATED("use number()") static OString valueOf( sal_Int64 ll, sal_Int16 radix = 10 ) + { + return number( ll, radix ); + } + + /** + Returns the string representation of the float argument. + + This function can't be used for language specific conversion. + + @param f a float. + @return a string with the string representation of the argument. + @deprecated use number() + */ + SAL_DEPRECATED("use number()") static OString valueOf( float f ) + { + return number(f); + } + + /** + Returns the string representation of the double argument. + + This function can't be used for language specific conversion. + + @param d a double. + @return a string with the string representation of the argument. + @deprecated use number() + */ + SAL_DEPRECATED("use number()") static OString valueOf( double d ) + { + return number(d); + } + +#if defined LIBO_INTERNAL_ONLY + operator std::string_view() const { return {getStr(), sal_uInt32(getLength())}; } +#endif + +#if defined LIBO_INTERNAL_ONLY + // A wrapper for the first expression in an + // + // OString::Concat(e1) + e2 + ... + // + // concatenation chain, when neither of the first two e1, e2 is one of our rtl string-related + // classes (so something like + // + // OString s = "a" + (b ? std::string_view("c") : std::string_view("dd")); + // + // would not compile): + template<typename T> [[nodiscard]] static + typename std::enable_if_t< + ToStringHelper<T>::allowOStringConcat, OStringConcat<OStringConcatMarker, T>> + Concat(T const & value) { return OStringConcat<OStringConcatMarker, T>({}, value); } + + // This overload is needed so that an argument of type 'char const[N]' ends up as + // 'OStringConcat<rtl::OStringConcatMarker, char const[N]>' rather than as + // 'OStringConcat<rtl::OStringConcatMarker, char[N]>': + template<typename T, std::size_t N> [[nodiscard]] static + typename std::enable_if_t< + ToStringHelper<T[N]>::allowOStringConcat, OStringConcat<OStringConcatMarker, T[N]>> + Concat(T (& value)[N]) { return OStringConcat<OStringConcatMarker, T[N]>({}, value); } +#endif +}; + +#if defined LIBO_INTERNAL_ONLY +inline bool operator ==(OString const & lhs, OStringConcatenation const & rhs) +{ return lhs == std::string_view(rhs); } +inline bool operator !=(OString const & lhs, OStringConcatenation const & rhs) +{ return lhs != std::string_view(rhs); } +inline bool operator ==(OStringConcatenation const & lhs, OString const & rhs) +{ return std::string_view(lhs) == rhs; } +inline bool operator !=(OStringConcatenation const & lhs, OString const & rhs) +{ return std::string_view(lhs) != rhs; } +#endif + +/* ======================================================================= */ + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + +/** + @internal +*/ +template<> +struct ToStringHelper< OString > + { + static std::size_t length( const OString& s ) { return s.getLength(); } + static char* addData( char* buffer, const OString& s ) { return addDataHelper( buffer, s.getStr(), s.getLength()); } + static const bool allowOStringConcat = true; + static const bool allowOUStringConcat = false; + }; + +/** + @internal +*/ +template<std::size_t N> +struct ToStringHelper< OStringLiteral<N> > + { + static constexpr std::size_t length( const OStringLiteral<N>& str ) { return str.getLength(); } + static char* addData( char* buffer, const OStringLiteral<N>& str ) { return addDataHelper( buffer, str.getStr(), str.getLength() ); } + static const bool allowOStringConcat = true; + static const bool allowOUStringConcat = false; + }; + +/** + @internal +*/ +template< typename charT, typename traits, typename T1, typename T2 > +inline std::basic_ostream<charT, traits> & operator <<( + std::basic_ostream<charT, traits> & stream, OStringConcat< T1, T2 >&& concat) +{ + return stream << OString( std::move(concat) ); +} +#endif + + +/** A helper to use OStrings with hash maps. + + Instances of this class are unary function objects that can be used as + hash function arguments to std::unordered_map and similar constructs. + */ +struct OStringHash +{ + /** Compute a hash code for a string. + + @param rString + a string. + + @return + a hash code for the string. This hash code should not be stored + persistently, as its computation may change in later revisions. + */ + size_t operator()( const OString& rString ) const + { return static_cast<size_t>(rString.hashCode()); } +}; + +/** Equality functor for classic c-strings (i.e., null-terminated char* strings). */ +struct CStringEqual +{ + bool operator()( const char* p1, const char* p2) const + { return rtl_str_compare(p1, p2) == 0; } +}; + +/** Hashing functor for classic c-strings (i.e., null-terminated char* strings). */ +struct CStringHash +{ + size_t operator()(const char* p) const + { return rtl_str_hashCode(p); } +}; + +/* ======================================================================= */ + +/** + Support for rtl::OString in std::ostream (and thus in + CPPUNIT_ASSERT or SAL_INFO macros, for example). + + @since LibreOffice 4.0 + */ +template< typename charT, typename traits > std::basic_ostream<charT, traits> & +operator <<( + std::basic_ostream<charT, traits> & stream, OString const & rString) +{ + return stream << rString.getStr(); + // best effort; potentially loses data due to embedded null characters +} + +} /* Namespace */ + +#ifdef RTL_STRING_UNITTEST +namespace rtl +{ +typedef rtlunittest::OString OString; +} +#undef RTL_STRING_CONST_FUNCTION +#endif + +#if defined LIBO_INTERNAL_ONLY && !defined RTL_STRING_UNITTEST +using ::rtl::OString; +using ::rtl::OStringChar; +using ::rtl::OStringConcatenation; +using ::rtl::OStringHash; +using ::rtl::OStringLiteral; +#endif + +/// @cond INTERNAL +/** + Make OString hashable by default for use in STL containers. + + @since LibreOffice 6.0 +*/ +#if defined LIBO_INTERNAL_ONLY +namespace std { + +template<> +struct hash<::rtl::OString> +{ + std::size_t operator()(::rtl::OString const & s) const + { return std::size_t(s.hashCode()); } +}; + +} + +#endif +/// @endcond + +#endif // INCLUDED_RTL_STRING_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |