Plex/proxy/src/main/java/dev/plex/toml/MultilineStringValueReader.java

package dev.plex.toml;

import java.util.concurrent.atomic.AtomicInteger;

class MultilineStringValueReader implements ValueReader
{

    static final MultilineStringValueReader MULTILINE_STRING_VALUE_READER = new MultilineStringValueReader();

    @Override
    public boolean canRead(String s)
    {
        return s.startsWith("\"\"\"");
    }

    @Override
    public Object read(String s, AtomicInteger index, dev.plex.toml.Context context)
    {
        AtomicInteger line = context.line;
        int startLine = line.get();
        int originalStartIndex = index.get();
        int startIndex = index.addAndGet(3);
        int endIndex = -1;

        if (s.charAt(startIndex) == '\n')
        {
            startIndex = index.incrementAndGet();
            line.incrementAndGet();
        }

        for (int i = startIndex; i < s.length(); i = index.incrementAndGet())
        {
            char c = s.charAt(i);

            if (c == '\n')
            {
                line.incrementAndGet();
            }
            else if (c == '"' && s.length() > i + 2 && s.charAt(i + 1) == '"' && s.charAt(i + 2) == '"')
            {
                endIndex = i;
                index.addAndGet(2);
                break;
            }
        }

        if (endIndex == -1)
        {
            dev.plex.toml.Results.Errors errors = new dev.plex.toml.Results.Errors();
            errors.unterminated(context.identifier.getName(), s.substring(originalStartIndex), startLine);
            return errors;
        }

        s = s.substring(startIndex, endIndex);
        s = s.replaceAll("\\\\\\s+", "");
        s = dev.plex.toml.StringValueReaderWriter.STRING_VALUE_READER_WRITER.replaceUnicodeCharacters(s);
        s = dev.plex.toml.StringValueReaderWriter.STRING_VALUE_READER_WRITER.replaceSpecialCharacters(s);

        return s;
    }

    private MultilineStringValueReader()
    {
    }

}