Exemplo n.º 1
0
int StringArray::addLines (const String& sourceText)
{
    int numLines = 0;
    String::CharPointerType text (sourceText.getCharPointer());
    bool finished = text.isEmpty();

    while (! finished)
    {
        for (String::CharPointerType startOfLine (text);;)
        {
            const String::CharPointerType 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;
}
    int parseIdentifier (CodeDocument::Iterator& source) noexcept
    {
        int tokenLength = 0;
        String::CharPointerType::CharType possibleIdentifier [100];
        String::CharPointerType possible (possibleIdentifier);

        while (isIdentifierBody (source.peekNextChar()))
        {
            const juce_wchar c = source.nextChar();

            if (tokenLength < 20)
                possible.write (c);

            ++tokenLength;
        }

        if (tokenLength > 1 && tokenLength <= 16)
        {
            possible.writeNull();

            if (isReservedKeyword (String::CharPointerType (possibleIdentifier), tokenLength))
                return CPlusPlusCodeTokeniser::tokenType_builtInKeyword;
        }

        return CPlusPlusCodeTokeniser::tokenType_identifier;
    }
Exemplo n.º 3
0
bool XmlDocument::parseHeader()
{
    skipNextWhiteSpace();

    if (CharacterFunctions::compareUpTo (input, CharPointer_ASCII ("<?xml"), 5) == 0)
    {
        const String::CharPointerType headerEnd (CharacterFunctions::find (input, CharPointer_ASCII ("?>")));

        if (headerEnd.isEmpty())
            return false;

       #if JUCE_DEBUG
        const String encoding (String (input, headerEnd)
                                 .fromFirstOccurrenceOf ("encoding", false, true)
                                 .fromFirstOccurrenceOf ("=", false, false)
                                 .fromFirstOccurrenceOf ("\"", false, false)
                                 .upToFirstOccurrenceOf ("\"", false, false).trim());

        /* If you load an XML document with a non-UTF encoding type, it may have been
           loaded wrongly.. Since all the files are read via the normal juce file streams,
           they're treated as UTF-8, so by the time it gets to the parser, the encoding will
           have been lost. Best plan is to stick to utf-8 or if you have specific files to
           read, use your own code to convert them to a unicode String, and pass that to the
           XML parser.
        */
        jassert (encoding.isEmpty() || encoding.startsWithIgnoreCase ("utf-"));
       #endif

        input = headerEnd + 2;
        skipNextWhiteSpace();
    }

    return true;
}
Exemplo n.º 4
0
    static int parseIdentifier (Iterator& source) noexcept
    {
        int tokenLength = 0;
        String::CharPointerType::CharType possibleIdentifier [100];
        String::CharPointerType possible (possibleIdentifier);

        while (CppTokeniserFunctions::isIdentifierBody (source.peekNextChar()))
        {
            const juce_wchar c = source.nextChar();

            if (tokenLength < 20)
                possible.write (c);

            ++tokenLength;
        }

        if (tokenLength > 1 && tokenLength <= 16)
        {
            possible.writeNull();

            if (isReservedKeyword (String::CharPointerType (possibleIdentifier), tokenLength))
                return LuaTokeniser::tokenType_keyword;
        }

        return LuaTokeniser::tokenType_identifier;
    }
Exemplo n.º 5
0
    String stringLiteral (const String& text, int maxLineLength)
    {
        if (text.isEmpty())
            return "String::empty";

        StringArray lines;

        {
            String::CharPointerType t (text.getCharPointer());
            bool finished = t.isEmpty();

            while (! finished)
            {
                for (String::CharPointerType startOfLine (t);;)
                {
                    switch (t.getAndAdvance())
                    {
                        case 0:     finished = true; break;
                        case '\n':  break;
                        case '\r':  if (*t == '\n') ++t; break;
                        default:    continue;
                    }

                    lines.add (String (startOfLine, t));
                    break;
                }
            }
        }

        if (maxLineLength > 0)
        {
            for (int i = 0; i < lines.size(); ++i)
            {
                String& line = lines.getReference (i);

                if (line.length() > maxLineLength)
                {
                    const String start (line.substring (0, maxLineLength));
                    const String end (line.substring (maxLineLength));
                    line = start;
                    lines.insert (i + 1, end);
                }
            }
        }

        for (int i = 0; i < lines.size(); ++i)
            lines.getReference(i) = CppTokeniserFunctions::addEscapeChars (lines.getReference(i));

        lines.removeEmptyStrings();

        for (int i = 0; i < lines.size(); ++i)
            lines.getReference(i) = "\"" + lines.getReference(i) + "\"";

        String result (lines.joinIntoString (newLine));

        if (! CharPointer_ASCII::isValidString (text.toUTF8(), std::numeric_limits<int>::max()))
            result = "CharPointer_UTF8 (" + result + ")";

        return result;
    }
Exemplo n.º 6
0
void LivePropertyEditorBase::findOriginalValueInCode()
{
    CodeDocument::Position pos (document, value.sourceLine, 0);
    String line (pos.getLineText());
    String::CharPointerType p (line.getCharPointer());

    p = CharacterFunctions::find (p, CharPointer_ASCII ("JUCE_LIVE_CONSTANT"));

    if (p.isEmpty())
    {
        // Not sure how this would happen - some kind of mix-up between source code and line numbers..
        jassertfalse;
        return;
    }

    p += (int) (sizeof ("JUCE_LIVE_CONSTANT") - 1);
    p = p.findEndOfWhitespace();

    if (! CharacterFunctions::find (p, CharPointer_ASCII ("JUCE_LIVE_CONSTANT")).isEmpty())
    {
        // Aargh! You've added two JUCE_LIVE_CONSTANT macros on the same line!
        // They're identified by their line number, so you must make sure each
        // one goes on a separate line!
        jassertfalse;
    }

    if (p.getAndAdvance() == '(')
    {
        String::CharPointerType start (p), end (p);

        int depth = 1;

        while (! end.isEmpty())
        {
            const juce_wchar c = end.getAndAdvance();

            if (c == '(')  ++depth;
            if (c == ')')  --depth;

            if (depth == 0)
            {
                --end;
                break;
            }
        }

        if (end > start)
        {
            valueStart = CodeDocument::Position (document, value.sourceLine, (int) (start - line.getCharPointer()));
            valueEnd   = CodeDocument::Position (document, value.sourceLine, (int) (end   - line.getCharPointer()));

            valueStart.setPositionMaintained (true);
            valueEnd.setPositionMaintained (true);

            wasHex = String (start, end).containsIgnoreCase ("0x");
        }
    }
}
Exemplo n.º 7
0
void OutputStream::writeText (const String& text, const bool asUTF16,
                              const bool writeUTF16ByteOrderMark)
{
    if (asUTF16)
    {
        if (writeUTF16ByteOrderMark)
            write ("\x0ff\x0fe", 2);

        String::CharPointerType src (text.getCharPointer());
        bool lastCharWasReturn = false;

        for (;;)
        {
            const juce_wchar c = src.getAndAdvance();

            if (c == 0)
                break;

            if (c == '\n' && ! lastCharWasReturn)
                writeShort ((short) '\r');

            lastCharWasReturn = (c == L'\r');
            writeShort ((short) c);
        }
    }
    else
    {
        const char* src = text.toUTF8();
        const char* t = src;

        for (;;)
        {
            if (*t == '\n')
            {
                if (t > src)
                    write (src, (int) (t - src));

                write ("\r\n", 2);
                src = t + 1;
            }
            else if (*t == '\r')
            {
                if (t[1] == '\n')
                    ++t;
            }
            else if (*t == 0)
            {
                if (t > src)
                    write (src, (int) (t - src));

                break;
            }

            ++t;
        }
    }
}
    static Result parseString (const juce_wchar quoteChar, String::CharPointerType& t, var& result)
    {
        MemoryOutputStream buffer (256);

        for (;;)
        {
            juce_wchar c = t.getAndAdvance();

            if (c == quoteChar)
                break;

            if (c == '\\')
            {
                c = t.getAndAdvance();

                switch (c)
                {
                    case '"':
                    case '\'':
                    case '\\':
                    case '/':  break;

                    case 'a':  c = '\a'; break;
                    case 'b':  c = '\b'; break;
                    case 'f':  c = '\f'; break;
                    case 'n':  c = '\n'; break;
                    case 'r':  c = '\r'; break;
                    case 't':  c = '\t'; break;

                    case 'u':
                    {
                        c = 0;

                        for (int i = 4; --i >= 0;)
                        {
                            const int digitValue = CharacterFunctions::getHexDigitValue (t.getAndAdvance());
                            if (digitValue < 0)
                                return createFail ("Syntax error in unicode escape sequence");

                            c = (juce_wchar) ((c << 4) + digitValue);
                        }

                        break;
                    }
                }
            }

            if (c == 0)
                return createFail ("Unexpected end-of-input in string constant");

            buffer.appendUTF8Char (c);
        }

        result = buffer.toUTF8();
        return Result::ok();
    }
Exemplo n.º 9
0
    static void createLines (Array <CodeDocumentLine*>& newLines, const String& text)
    {
        String::CharPointerType t (text.getCharPointer());
        int charNumInFile = 0;
        bool finished = false;

        while (! (finished || t.isEmpty()))
        {
            String::CharPointerType startOfLine (t);
            int startOfLineInFile = charNumInFile;
            int lineLength = 0;
            int numNewLineChars = 0;

            for (;;)
            {
                const juce_wchar c = t.getAndAdvance();

                if (c == 0)
                {
                    finished = true;
                    break;
                }

                ++charNumInFile;
                ++lineLength;

                if (c == '\r')
                {
                    ++numNewLineChars;

                    if (*t == '\n')
                    {
                        ++t;
                        ++charNumInFile;
                        ++lineLength;
                        ++numNewLineChars;
                    }

                    break;
                }

                if (c == '\n')
                {
                    ++numNewLineChars;
                    break;
                }
            }

            newLines.add (new CodeDocumentLine (startOfLine, lineLength,
                                                numNewLineChars, startOfLineInFile));
        }

        jassert (charNumInFile == text.length());
    }
Exemplo n.º 10
0
void SimpleTypeLayout::appendText (const AttributedString& text,
                                   const Range<int>& stringRange, const Font& font,
                                   const Colour& colour)
{
    String stringText = text.getText().substring(stringRange.getStart(), stringRange.getEnd());
    String::CharPointerType t (stringText.getCharPointer());
    String currentString;
    int lastCharType = 0;

    for (;;)
    {
        const juce_wchar c = t.getAndAdvance();
        if (c == 0)
            break;

        int charType;
        if (c == '\r' || c == '\n')
        {
            charType = 0;
        }
        else if (CharacterFunctions::isWhitespace (c))
        {
            charType = 2;
        }
        else
        {
            charType = 1;
        }

        if (charType == 0 || charType != lastCharType)
        {
            if (currentString.isNotEmpty())
            {
                tokens.add (new Token (currentString, font, colour,
                                       lastCharType == 2 || lastCharType == 0));
            }

            currentString = String::charToString (c);

            if (c == '\r' && *t == '\n')
                currentString += t.getAndAdvance();
        }
        else
        {
            currentString += c;
        }

        lastCharType = charType;
    }

    if (currentString.isNotEmpty())
        tokens.add (new Token (currentString, font, colour, lastCharType == 2));
}
    static Result parseObjectOrArray (String::CharPointerType t, var& result)
    {
        t = t.findEndOfWhitespace();

        switch (t.getAndAdvance())
        {
            case 0:      result = var::null; return Result::ok();
            case '{':    return parseObject (t, result);
            case '[':    return parseArray  (t, result);
        }

        return createFail ("Expected '{' or '['", &t);
    }
Exemplo n.º 12
0
    static String nextToken (String::CharPointerType& t)
    {
        t = t.findEndOfWhitespace();

        String::CharPointerType start (t);
        size_t numChars = 0;

        while (! (t.isEmpty() || t.isWhitespace()))
        {
            ++t;
            ++numChars;
        }

        return String (start, numChars);
    }
    int findFirstNonWhitespaceChar (const String& line) noexcept
    {
        String::CharPointerType t (line.getCharPointer());
        int i = 0;

        while (! t.isEmpty())
        {
            if (! t.isWhitespace())
                return i;

            ++t;
            ++i;
        }

        return 0;
    }
    int indexToColumn (int index, const String& line, int spacesPerTab) const noexcept
    {
        jassert (index <= line.length());

        String::CharPointerType t (line.getCharPointer());
        int col = 0;
        for (int i = 0; i < index; ++i)
        {
            if (t.getAndAdvance() != '\t')
                ++col;
            else
                col += spacesPerTab - (col % spacesPerTab);
        }

        return col;
    }
Exemplo n.º 15
0
MD5::MD5 (const String& text)
{
    ProcessContext context;
    String::CharPointerType t (text.getCharPointer());

    while (! t.isEmpty())
    {
        // force the string into integer-sized unicode characters, to try to make it
        // get the same results on all platforms + compilers.
        uint32 unicodeChar = ByteOrder::swapIfBigEndian ((uint32) t.getAndAdvance());

        context.processBlock (&unicodeChar, sizeof (unicodeChar));
    }

    context.finish (result);
}
Exemplo n.º 16
0
    inline void skipComma (String::CharPointerType& s)
    {
        s = s.findEndOfWhitespace();

        if (*s == ',')
            ++s;
    }
Exemplo n.º 17
0
    int getBraceCount (String::CharPointerType line)
    {
        int braces = 0;

        for (;;)
        {
            const juce_wchar c = line.getAndAdvance();

            if (c == 0)                         break;
            else if (c == '{')                  ++braces;
            else if (c == '}')                  --braces;
            else if (c == '/')                  { if (*line == '/') break; }
            else if (c == '"' || c == '\'')     { while (! (line.isEmpty() || line.getAndAdvance() == c)) {} }
        }

        return braces;
    }
Exemplo n.º 18
0
    static Result parseAny (String::CharPointerType& t, var& result)
    {
        t = t.findEndOfWhitespace();
        auto t2 = t;

        switch (t2.getAndAdvance())
        {
            case '{':    t = t2; return parseObject (t, result);
            case '[':    t = t2; return parseArray  (t, result);
            case '"':    t = t2; return parseString ('"',  t, result);
            case '\'':   t = t2; return parseString ('\'', t, result);

            case '-':
                t2 = t2.findEndOfWhitespace();
                if (! CharacterFunctions::isDigit (*t2))
                    break;

                t = t2;
                return parseNumber (t, result, true);

            case '0': case '1': case '2': case '3': case '4':
            case '5': case '6': case '7': case '8': case '9':
                return parseNumber (t, result, false);

            case 't':   // "true"
                if (t2.getAndAdvance() == 'r' && t2.getAndAdvance() == 'u' && t2.getAndAdvance() == 'e')
                {
                    t = t2;
                    result = var (true);
                    return Result::ok();
                }
                break;

            case 'f':   // "false"
                if (t2.getAndAdvance() == 'a' && t2.getAndAdvance() == 'l'
                      && t2.getAndAdvance() == 's' && t2.getAndAdvance() == 'e')
                {
                    t = t2;
                    result = var (false);
                    return Result::ok();
                }
                break;

            case 'n':   // "null"
                if (t2.getAndAdvance() == 'u' && t2.getAndAdvance() == 'l' && t2.getAndAdvance() == 'l')
                {
                    t = t2;
                    result = var();
                    return Result::ok();
                }
                break;

            default:
                break;
        }

        return createFail ("Syntax error", &t);
    }
Exemplo n.º 19
0
    void updateLength() noexcept
    {
        lineLength = 0;
        lineLengthWithoutNewLines = 0;

        for (String::CharPointerType t (line.getCharPointer());;)
        {
            const juce_wchar c = t.getAndAdvance();

            if (c == 0)
                break;

            ++lineLength;

            if (c != '\n' && c != '\r')
                lineLengthWithoutNewLines = lineLength;
        }
    }
    bool isReservedKeyword (String::CharPointerType token, const int tokenLength) noexcept
    {
        static const char* const keywords2Char[] =
            { "if", "do", "or", "id", 0 };

        static const char* const keywords3Char[] =
            { "for", "int", "new", "try", "xor", "and", "asm", "not", 0 };

        static const char* const keywords4Char[] =
            { "bool", "void", "this", "true", "long", "else", "char",
              "enum", "case", "goto", "auto", 0 };

        static const char* const keywords5Char[] =
            {  "while", "bitor", "break", "catch", "class", "compl", "const", "false",
                "float", "short", "throw", "union", "using", "or_eq", 0 };

        static const char* const keywords6Char[] =
            { "return", "struct", "and_eq", "bitand", "delete", "double", "extern",
              "friend", "inline", "not_eq", "public", "sizeof", "static", "signed",
              "switch", "typeid", "wchar_t", "xor_eq", 0};

        static const char* const keywordsOther[] =
            { "const_cast", "continue", "default", "explicit", "mutable", "namespace",
              "operator", "private", "protected", "register", "reinterpret_cast", "static_cast",
              "template", "typedef", "typename", "unsigned", "virtual", "volatile",
              "@implementation", "@interface", "@end", "@synthesize", "@dynamic", "@public",
              "@private", "@property", "@protected", "@class", 0 };

        const char* const* k;

        switch (tokenLength)
        {
            case 2:     k = keywords2Char; break;
            case 3:     k = keywords3Char; break;
            case 4:     k = keywords4Char; break;
            case 5:     k = keywords5Char; break;
            case 6:     k = keywords6Char; break;

            default:
                if (tokenLength < 2 || tokenLength > 16)
                    return false;

                k = keywordsOther;
                break;
        }

        int i = 0;
        while (k[i] != 0)
        {
            if (token.compare (CharPointer_ASCII (k[i])) == 0)
                return true;

            ++i;
        }

        return false;
    }
Exemplo n.º 21
0
String StringPool::getPooledString (String::CharPointerType start, String::CharPointerType end)
{
    if (start.isEmpty() || start == end)
        return String();

    const ScopedLock sl (lock);
    garbageCollectIfNeeded();
    return addPooledString (strings, StartEndString (start, end));
}
Exemplo n.º 22
0
void GlyphArrangement::addCurtailedLineOfText (const Font& font,
                                               const String& text,
                                               const float xOffset,
                                               const float yOffset,
                                               const float maxWidthPixels,
                                               const bool useEllipsis)
{
    if (text.isNotEmpty())
    {
        Array <int> newGlyphs;
        Array <float> xOffsets;
        font.getGlyphPositions (text, newGlyphs, xOffsets);
        const int textLen = newGlyphs.size();
        glyphs.ensureStorageAllocated (glyphs.size() + textLen);

        String::CharPointerType t (text.getCharPointer());

        for (int i = 0; i < textLen; ++i)
        {
            const float thisX = xOffsets.getUnchecked (i);
            const float nextX = xOffsets.getUnchecked (i + 1);

            if (nextX > maxWidthPixels + 1.0f)
            {
                // curtail the string if it's too wide..
                if (useEllipsis && textLen > 3 && glyphs.size() >= 3)
                    insertEllipsis (font, xOffset + maxWidthPixels, 0, glyphs.size());

                break;
            }
            else
            {
                const bool isWhitespace = t.isWhitespace();

                glyphs.add (new PositionedGlyph (font, t.getAndAdvance(),
                                                 newGlyphs.getUnchecked(i),
                                                 xOffset + thisX, yOffset,
                                                 nextX - thisX, isWhitespace));
            }
        }
    }
}
Exemplo n.º 23
0
int StringArray::addLines (const String& sourceText)
{
    int numLines = 0;
    String::CharPointerType text (sourceText.getCharPointer());
    bool finished = text.isEmpty();

    while (! finished)
    {
        String::CharPointerType startOfLine (text);
        size_t numChars = 0;

        for (;;)
        {
            const juce_wchar c = text.getAndAdvance();

            if (c == 0)
            {
                finished = true;
                break;
            }

            if (c == '\n')
                break;

            if (c == '\r')
            {
                if (*text == '\n')
                    ++text;

                break;
            }

            ++numChars;
        }

        add (String (startOfLine, numChars));
        ++numLines;
    }

    return numLines;
}
Exemplo n.º 24
0
    static int findLongestCommonSubstring (String::CharPointerType a, const int lenA,
                                           const String::CharPointerType b, const int lenB,
                                           int& indexInA, int& indexInB)
    {
        if (lenA == 0 || lenB == 0)
            return 0;

        HeapBlock<int> lines;
        lines.calloc (2 + 2 * (size_t) lenB);

        int* l0 = lines;
        int* l1 = l0 + lenB + 1;

        int loopsWithoutImprovement = 0;
        int bestLength = 0;
        indexInA = indexInB = 0;

        for (int i = 0; i < lenA; ++i)
        {
            const juce_wchar ca = a.getAndAdvance();
            String::CharPointerType b2 (b);

            for (int j = 0; j < lenB; ++j)
            {
                if (ca != b2.getAndAdvance())
                {
                    l1[j + 1] = 0;
                }
                else
                {
                    const int len = l0[j] + 1;
                    l1[j + 1] = len;

                    if (len > bestLength)
                    {
                        loopsWithoutImprovement = 0;
                        bestLength = len;
                        indexInA = i;
                        indexInB = j;
                    }
                }
            }

            if (++loopsWithoutImprovement > 100)
                break;

            std::swap (l0, l1);
        }

        indexInA -= bestLength - 1;
        indexInB -= bestLength - 1;
        return bestLength;
    }
int CodeEditorComponent::indexToColumn (int lineNum, int index) const noexcept
{
    String::CharPointerType t (document.getLine (lineNum).getCharPointer());

    int col = 0;
    for (int i = 0; i < index; ++i)
    {
        if (t.isEmpty())
        {
            jassertfalse;
            break;
        }

        if (t.getAndAdvance() != '\t')
            ++col;
        else
            col += getTabSize() - (col % getTabSize());
    }

    return col;
}
int CodeEditorComponent::columnToIndex (int lineNum, int column) const noexcept
{
    String::CharPointerType t (document.getLine (lineNum).getCharPointer());

    int i = 0, col = 0;

    while (! t.isEmpty())
    {
        if (t.getAndAdvance() != '\t')
            ++col;
        else
            col += getTabSize() - (col % getTabSize());

        if (col > column)
            break;

        ++i;
    }

    return i;
}
Exemplo n.º 27
0
//==============================================================================
String StringArray::joinIntoString (const String& separator, int start, int numberToJoin) const
{
    const int last = (numberToJoin < 0) ? size()
                                        : jmin (size(), start + numberToJoin);

    if (start < 0)
        start = 0;

    if (start >= last)
        return String::empty;

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

    const size_t separatorBytes = separator.getCharPointer().sizeInBytes() - sizeof (String::CharPointerType::CharType);
    size_t bytesNeeded = separatorBytes * (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);

    String::CharPointerType dest (result.getCharPointer());

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

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

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

    dest.writeNull();

    return result;
}
Exemplo n.º 28
0
int StringArray::addTokens (StringRef text, StringRef breakCharacters, StringRef quoteCharacters)
{
    int num = 0;

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

            if (tokenEnd.isEmpty())
                break;

            t = ++tokenEnd;
        }
    }

    return num;
}
Exemplo n.º 29
0
int StringArray::addTokens (const String& text, const String& breakCharacters, const String& quoteCharacters)
{
    int num = 0;
    String::CharPointerType t (text.getCharPointer());

    if (! t.isEmpty())
    {
        for (;;)
        {
            String::CharPointerType tokenEnd (CharacterFunctions::findEndOfToken (t,
                                                                                  breakCharacters.getCharPointer(),
                                                                                  quoteCharacters.getCharPointer()));
            add (String (t, tokenEnd));
            ++num;

            if (tokenEnd.isEmpty())
                break;

            t = ++tokenEnd;
        }
    }

    return num;
}
Exemplo n.º 30
0
    void getGlyphPositions (const String& text, Array<int>& glyphs, Array<float>& xOffsets) override
    {
        JNIEnv* env = getEnv();
        const int numChars = text.length();
        jfloatArray widths = env->NewFloatArray (numChars);

        const int numDone = paint.callIntMethod (Paint.getTextWidths, javaString (text).get(), widths);

        HeapBlock<jfloat> localWidths (numDone);
        env->GetFloatArrayRegion (widths, 0, numDone, localWidths);
        env->DeleteLocalRef (widths);

        String::CharPointerType s (text.getCharPointer());

        xOffsets.add (0);

        float x = 0;
        for (int i = 0; i < numDone; ++i)
        {
            glyphs.add ((int) s.getAndAdvance());
            x += localWidths[i];
            xOffsets.add (x * referenceFontToUnits);
        }
    }