JUCE/modules/juce_core/text/juce_StringArray.cpp

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   JUCE is an open source library subject to commercial or open-source
   licensing.

   The code included in this file is provided under the terms of the ISC license
   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
   To use, copy, modify, and/or distribute this software for any purpose with or
   without fee is hereby granted provided that the above copyright notice and
   this permission notice appear in all copies.

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

StringArray::StringArray() noexcept
{
}

StringArray::StringArray (const StringArray& other)
    : strings (other.strings)
{
}

StringArray::StringArray (StringArray&& other) noexcept
    : strings (static_cast<Array<String>&&> (other.strings))
{
}

StringArray::StringArray (const String& firstValue)
{
    strings.add (firstValue);
}

StringArray::StringArray (const String* initialStrings, int numberOfStrings)
{
    strings.addArray (initialStrings, numberOfStrings);
}

StringArray::StringArray (const char* const* initialStrings)
{
    strings.addNullTerminatedArray (initialStrings);
}

StringArray::StringArray (const char* const* initialStrings, int numberOfStrings)
{
    strings.addArray (initialStrings, numberOfStrings);
}

StringArray::StringArray (const wchar_t* const* initialStrings)
{
    strings.addNullTerminatedArray (initialStrings);
}

StringArray::StringArray (const wchar_t* const* initialStrings, int numberOfStrings)
{
    strings.addArray (initialStrings, numberOfStrings);
}

StringArray& StringArray::operator= (const StringArray& other)
{
    strings = other.strings;
    return *this;
}

StringArray& StringArray::operator= (StringArray&& other) noexcept
{
    strings = static_cast<Array<String>&&> (other.strings);
    return *this;
}

StringArray::~StringArray()
{
}

bool StringArray::operator== (const StringArray& other) const noexcept
{
    return strings == other.strings;
}

bool StringArray::operator!= (const StringArray& other) const noexcept
{
    return ! operator== (other);
}

void StringArray::swapWith (StringArray& other) noexcept
{
    strings.swapWith (other.strings);
}

void StringArray::clear()
{
    strings.clear();
}

void StringArray::clearQuick()
{
    strings.clearQuick();
}

const String& StringArray::operator[] (const int index) const noexcept
{
    if (isPositiveAndBelow (index, strings.size()))
        return strings.getReference (index);

   #if JUCE_ALLOW_STATIC_NULL_VARIABLES
    return String::empty;
   #else
    static String empty;
    return empty;
   #endif
}

String& StringArray::getReference (const int index) noexcept
{
    return strings.getReference (index);
}

void StringArray::add (const String& newString)
{
    strings.add (newString);
}

void StringArray::add (String&& stringToAdd)
{
    strings.add (static_cast<String&&> (stringToAdd));
}

void StringArray::insert (const int index, const String& newString)
{
    strings.insert (index, newString);
}

bool StringArray::addIfNotAlreadyThere (const String& newString, const bool ignoreCase)
{
    if (contains (newString, ignoreCase))
        return false;

    add (newString);
    return true;
}

void StringArray::addArray (const StringArray& otherArray, int startIndex, int numElementsToAdd)
{
    if (startIndex < 0)
    {
        jassertfalse;
        startIndex = 0;
    }

    if (numElementsToAdd < 0 || startIndex + numElementsToAdd > otherArray.size())
        numElementsToAdd = otherArray.size() - startIndex;

    while (--numElementsToAdd >= 0)
        strings.add (otherArray.strings.getReference (startIndex++));
}

void StringArray::mergeArray (const StringArray& otherArray, const bool ignoreCase)
{
    for (auto& s : otherArray)
        addIfNotAlreadyThere (s, ignoreCase);
}

void StringArray::set (const int index, const String& newString)
{
    strings.set (index, newString);
}

bool StringArray::contains (StringRef stringToLookFor, const bool ignoreCase) const
{
    return indexOf (stringToLookFor, ignoreCase) >= 0;
}

int StringArray::indexOf (StringRef stringToLookFor, const bool ignoreCase, int i) const
{
    if (i < 0)
        i = 0;

    auto numElements = size();

    if (ignoreCase)
    {
        for (; i < numElements; ++i)
            if (strings.getReference(i).equalsIgnoreCase (stringToLookFor))
                return i;
    }
    else
    {
        for (; i < numElements; ++i)
            if (stringToLookFor == strings.getReference (i))
                return i;
    }

    return -1;
}

void StringArray::move (const int currentIndex, const int newIndex) noexcept
{
    strings.move (currentIndex, newIndex);
}

//==============================================================================
void StringArray::remove (int index)
{
    strings.remove (index);
}

void StringArray::removeString (StringRef stringToRemove, const bool ignoreCase)
{
    if (ignoreCase)
    {
        for (int i = size(); --i >= 0;)
            if (strings.getReference(i).equalsIgnoreCase (stringToRemove))
                strings.remove (i);
    }
    else
    {
        for (int i = size(); --i >= 0;)
            if (stringToRemove == strings.getReference (i))
                strings.remove (i);
    }
}

void StringArray::removeRange (int startIndex, int numberToRemove)
{
    strings.removeRange (startIndex, numberToRemove);
}

//==============================================================================
void StringArray::removeEmptyStrings (const bool removeWhitespaceStrings)
{
    if (removeWhitespaceStrings)
    {
        for (int i = size(); --i >= 0;)
            if (! strings.getReference(i).containsNonWhitespaceChars())
                strings.remove (i);
    }
    else
    {
        for (int i = size(); --i >= 0;)
            if (strings.getReference(i).isEmpty())
                strings.remove (i);
    }
}

void StringArray::trim()
{
    for (auto& s : strings)
        s = s.trim();
}

//==============================================================================
struct InternalStringArrayComparator_CaseSensitive
{
    static int compareElements (String& s1, String& s2) noexcept    { return s1.compare (s2); }
};

struct InternalStringArrayComparator_CaseInsensitive
{
    static int compareElements (String& s1, String& s2) noexcept    { return s1.compareIgnoreCase (s2); }
};

struct InternalStringArrayComparator_Natural
{
    static int compareElements (String& s1, String& s2) noexcept    { return s1.compareNatural (s2); }
};

void StringArray::sort (const bool ignoreCase)
{
    if (ignoreCase)
    {
        InternalStringArrayComparator_CaseInsensitive comp;
        strings.sort (comp);
    }
    else
    {
        InternalStringArrayComparator_CaseSensitive comp;
        strings.sort (comp);
    }
}

void StringArray::sortNatural()
{
    InternalStringArrayComparator_Natural comp;
    strings.sort (comp);
}

//==============================================================================
String StringArray::joinIntoString (StringRef separator, int start, int numberToJoin) const
{
    auto last = (numberToJoin < 0) ? size()
                                   : jmin (size(), start + numberToJoin);

    if (start < 0)
        start = 0;

    if (start >= last)
        return {};

    if (start == last - 1)
        return strings.getReference (start);

    auto separatorBytes = separator.text.sizeInBytes() - sizeof (String::CharPointerType::CharType);
    auto bytesNeeded = separatorBytes * (size_t) (last - start - 1);

    for (int i = start; i < last; ++i)
        bytesNeeded += strings.getReference(i).getCharPointer().sizeInBytes() - sizeof (String::CharPointerType::CharType);

    String result;
    result.preallocateBytes (bytesNeeded);

    auto dest = result.getCharPointer();

    while (start < last)
    {
        auto& s = strings.getReference (start);

        if (! s.isEmpty())
            dest.writeAll (s.getCharPointer());

        if (++start < last && separatorBytes > 0)
            dest.writeAll (separator.text);
    }

    dest.writeNull();

    return result;
}

int StringArray::addTokens (StringRef text, const bool preserveQuotedStrings)
{
    return addTokens (text, " \n\r\t", preserveQuotedStrings ? "\"" : "");
}

int StringArray::addTokens (StringRef text, StringRef breakCharacters, StringRef quoteCharacters)
{
    int num = 0;

    if (text.isNotEmpty())
    {
        for (auto t = text.text;;)
        {
            auto tokenEnd = CharacterFunctions::findEndOfToken (t,
                                                                breakCharacters.text,
                                                                quoteCharacters.text);
            strings.add (String (t, tokenEnd));
            ++num;

            if (tokenEnd.isEmpty())
                break;

            t = ++tokenEnd;
        }
    }

    return num;
}

int StringArray::addLines (StringRef sourceText)
{
    int numLines = 0;
    auto text = sourceText.text;
    bool finished = text.isEmpty();

    while (! finished)
    {
        for (auto startOfLine = text;;)
        {
            auto endOfLine = text;

            switch (text.getAndAdvance())
            {
                case 0:     finished = true; break;
                case '\n':  break;
                case '\r':  if (*text == '\n') ++text; break;
                default:    continue;
            }

            strings.add (String (startOfLine, endOfLine));
            ++numLines;
            break;
        }
    }

    return numLines;
}

StringArray StringArray::fromTokens (StringRef stringToTokenise, bool preserveQuotedStrings)
{
    StringArray s;
    s.addTokens (stringToTokenise, preserveQuotedStrings);
    return s;
}

StringArray StringArray::fromTokens (StringRef stringToTokenise,
                                     StringRef breakCharacters,
                                     StringRef quoteCharacters)
{
    StringArray s;
    s.addTokens (stringToTokenise, breakCharacters, quoteCharacters);
    return s;
}

StringArray StringArray::fromLines (StringRef stringToBreakUp)
{
    StringArray s;
    s.addLines (stringToBreakUp);
    return s;
}

//==============================================================================
void StringArray::removeDuplicates (const bool ignoreCase)
{
    for (int i = 0; i < size() - 1; ++i)
    {
        auto s = strings.getReference(i);

        for (int nextIndex = i + 1;;)
        {
            nextIndex = indexOf (s, ignoreCase, nextIndex);

            if (nextIndex < 0)
                break;

            strings.remove (nextIndex);
        }
    }
}

void StringArray::appendNumbersToDuplicates (const bool ignoreCase,
                                             const bool appendNumberToFirstInstance,
                                             CharPointer_UTF8 preNumberString,
                                             CharPointer_UTF8 postNumberString)
{
    if (preNumberString.getAddress() == nullptr)
        preNumberString = CharPointer_UTF8 (" (");

    if (postNumberString.getAddress() == nullptr)
        postNumberString = CharPointer_UTF8 (")");

    for (int i = 0; i < size() - 1; ++i)
    {
        auto& s = strings.getReference(i);
        auto nextIndex = indexOf (s, ignoreCase, i + 1);

        if (nextIndex >= 0)
        {
            auto original = s;
            int number = 0;

            if (appendNumberToFirstInstance)
                s = original + String (preNumberString) + String (++number) + String (postNumberString);
            else
                ++number;

            while (nextIndex >= 0)
            {
                set (nextIndex, (*this)[nextIndex] + String (preNumberString) + String (++number) + String (postNumberString));
                nextIndex = indexOf (original, ignoreCase, nextIndex + 1);
            }
        }
    }
}

void StringArray::ensureStorageAllocated (int minNumElements)
{
    strings.ensureStorageAllocated (minNumElements);
}

void StringArray::minimiseStorageOverheads()
{
    strings.minimiseStorageOverheads();
}

} // namespace juce