Method getNonexistentChildFile

JUCE/modules/juce_core/files/juce_File.cpp:603–653

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File File::getNonexistentChildFile (const String& suggestedPrefix,
                                    const String& suffix,
                                    bool putNumbersInBrackets) const
{
    auto f = getChildFile (suggestedPrefix + suffix);

    if (f.exists())
    {
        int number = 1;
        auto prefix = suggestedPrefix;

        // remove any bracketed numbers that may already be on the end..
        if (prefix.trim().endsWithChar (')'))
        {
            putNumbersInBrackets = true;

            auto openBracks  = prefix.lastIndexOfChar ('(');
            auto closeBracks = prefix.lastIndexOfChar (')');

            if (openBracks > 0
                 && closeBracks > openBracks
                 && prefix.substring (openBracks + 1, closeBracks).containsOnly ("0123456789"))
            {
                number = prefix.substring (openBracks + 1, closeBracks).getIntValue();
                prefix = prefix.substring (0, openBracks);
            }
        }

        do
        {
            auto newName = prefix;

            if (putNumbersInBrackets)
            {
                newName << '(' << ++number << ')';
            }
            else
            {
                if (CharacterFunctions::isDigit (prefix.getLastCharacter()))
                    newName << '_'; // pad with an underscore if the name already ends in a digit

                newName << ++number;
            }

            f = getChildFile (newName + suffix);

        } while (f.exists());
    }

    return f;
}

File File::getNonexistentSibling (const bool putNumbersInBrackets) const
{