C++ CharPointer_UTF8函数代码示例

void StringArray::appendNumbersToDuplicates (bool ignoreCase,
                                             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);
            }
        }
    }
}

String MidiMessage::getTextFromTextMetaEvent() const
{
    auto textData = reinterpret_cast<const char*> (getMetaEventData());

    return String (CharPointer_UTF8 (textData),
                   CharPointer_UTF8 (textData + getMetaEventLength()));
}

File File::getSpecialLocation (const SpecialLocationType type)
{
    switch (type)
    {
        case userHomeDirectory:
        {
            if (const char* homeDir = getenv ("HOME"))
                return File (CharPointer_UTF8 (homeDir));

            if (auto* pw = getpwuid (getuid()))
                return File (CharPointer_UTF8 (pw->pw_dir));

            return {};
        }

        case userDocumentsDirectory:          return resolveXDGFolder ("XDG_DOCUMENTS_DIR", "~/Documents");
        case userMusicDirectory:              return resolveXDGFolder ("XDG_MUSIC_DIR",     "~/Music");
        case userMoviesDirectory:             return resolveXDGFolder ("XDG_VIDEOS_DIR",    "~/Videos");
        case userPicturesDirectory:           return resolveXDGFolder ("XDG_PICTURES_DIR",  "~/Pictures");
        case userDesktopDirectory:            return resolveXDGFolder ("XDG_DESKTOP_DIR",   "~/Desktop");
        case userApplicationDataDirectory:    return resolveXDGFolder ("XDG_CONFIG_HOME",   "~/.config");
        case commonDocumentsDirectory:
        case commonApplicationDataDirectory:  return File ("/opt");
        case globalApplicationsDirectory:     return File ("/usr");

        case tempDirectory:
        {
            if (const char* tmpDir = getenv ("TMPDIR"))
                return File (CharPointer_UTF8 (tmpDir));

            return File ("/tmp");
        }

        case invokedExecutableFile:
            if (juce_argv != nullptr && juce_argc > 0)
                return File (CharPointer_UTF8 (juce_argv[0]));
            // deliberate fall-through...

        case currentExecutableFile:
        case currentApplicationFile:
           #if ! JUCE_STANDALONE_APPLICATION
            return juce_getExecutableFile();
           #endif
            // deliberate fall-through if this is not a shared-library

        case hostApplicationPath:
        {
            const File f ("/proc/self/exe");
            return f.isSymbolicLink() ? f.getLinkedTarget() : juce_getExecutableFile();
        }

        default:
            jassertfalse; // unknown type?
            break;
    }

    return {};
}

void XmlDocument::skipHeader()
{
    const int headerStart = input.indexOf (CharPointer_UTF8 ("<?xml"));

    if (headerStart >= 0)
    {
        const int headerEnd = (input + headerStart).indexOf (CharPointer_UTF8 ("?>"));
        if (headerEnd < 0)
            return;

       #if JUCE_DEBUG
        const String header (input + headerStart, (size_t) (headerEnd - headerStart));
        const String encoding (header.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();

    const int docTypeIndex = input.indexOf (CharPointer_UTF8 ("<!DOCTYPE"));
    if (docTypeIndex < 0)
        return;

    input += docTypeIndex + 9;
    const String::CharPointerType docType (input);

    int n = 1;

    while (n > 0)
    {
        const juce_wchar c = readNextChar();

        if (outOfData)
            return;

        if (c == '<')
            ++n;
        else if (c == '>')
            --n;
    }

    dtdText = String (docType, (size_t) (input.getAddress() - (docType.getAddress() + 1))).trim();
}

File File::getSpecialLocation (const SpecialLocationType type)
{
    switch (type)
    {
    case userHomeDirectory:
    {
        const char* homeDir = getenv ("HOME");
        if (homeDir)
            return File (CharPointer_UTF8 (homeDir));

        if (struct passwd* const pw = getpwuid (getuid()))
            return File (CharPointer_UTF8 (pw->pw_dir));

        return File (CharPointer_UTF8 (homeDir));
    }

    case userDocumentsDirectory:
        return resolveXDGFolder ("XDG_DOCUMENTS_DIR", "~");
    case userMusicDirectory:
        return resolveXDGFolder ("XDG_MUSIC_DIR",     "~");
    case userMoviesDirectory:
        return resolveXDGFolder ("XDG_VIDEOS_DIR",    "~");
    case userPicturesDirectory:
        return resolveXDGFolder ("XDG_PICTURES_DIR",  "~");
    case userDesktopDirectory:
        return resolveXDGFolder ("XDG_DESKTOP_DIR",   "~/Desktop");
    case userApplicationDataDirectory:
        return File ("~");
    case commonDocumentsDirectory:
    case commonApplicationDataDirectory:
        return File ("/var");
    case globalApplicationsDirectory:
        return File ("/usr");

    case tempDirectory:
    {
        File tmp ("/var/tmp");

        if (! tmp.isDirectory())
        {
            tmp = "/tmp";

            if (! tmp.isDirectory())
                tmp = File::getCurrentWorkingDirectory();
        }

        return tmp;
    }

    default:
        bassertfalse; // unknown type?
        break;
    }

    return File::nonexistent ();
}

//==============================================================================
String SystemStats::getLogonName()
{
    if (const char* user = getenv ("USER"))
        return CharPointer_UTF8 (user);

    if (struct passwd* const pw = getpwuid (getuid()))
        return CharPointer_UTF8 (pw->pw_name);

    return String();
}

void XmlDocument::skipNextWhiteSpace()
{
    for (;;)
    {
        juce_wchar c = *input;

        while (CharacterFunctions::isWhitespace (c))
            c = *++input;

        if (c == 0)
        {
            outOfData = true;
            break;
        }
        else if (c == '<')
        {
            if (input[1] == '!'
                 && input[2] == '-'
                 && input[3] == '-')
            {
                input += 4;
                const int closeComment = input.indexOf (CharPointer_UTF8 ("-->"));

                if (closeComment < 0)
                {
                    outOfData = true;
                    break;
                }

                input += closeComment + 3;
                continue;
            }
            else if (input[1] == '?')
            {
                input += 2;
                const int closeBracket = input.indexOf (CharPointer_UTF8 ("?>"));

                if (closeBracket < 0)
                {
                    outOfData = true;
                    break;
                }

                input += closeBracket + 2;
                continue;
            }
        }

        break;
    }
}

void FilterGraph::mouseMove (const MouseEvent &event)
{
    Point <int> mousePos =  getMouseXYRelative();
    int xPos = mousePos.getX();
    float freq = xToFreq (xPos);
    
    if (traceType == Magnitude)
    {
        float magnitude = (float) (filterVector [0].getResponse (freq).magnitudeValue);
    
        for (int i = 1; i < numFilters; i++)
        {
            magnitude *= (float) (filterVector [i].getResponse (freq).magnitudeValue);
        }
    
        magnitude = 20 * log10 (magnitude);
    
        setTooltip (String (freq, 1) + "Hz, " + String (magnitude, 1) + "dB");
    }
    
    if (traceType == Phase)
    {
        float phase = (float) (filterVector [0].getResponse (freq).phaseValue);
    
        for (int i = 1; i < numFilters; i++)
        {
            phase += (float) (filterVector [i].getResponse (freq).phaseValue);
        }
        
        phase /= float_Pi;
    
        setTooltip (String (freq, 1) + "Hz, " + String (phase, 2) + String (CharPointer_UTF8 ("\xcf\x80")) + "rad");
    }
}

    bool next (String& filenameFound,
               bool* const isDir, bool* const isHidden, std::int64_t* const fileSize,
               Time* const modTime, Time* const creationTime, bool* const isReadOnly)
    {
        if (dir != nullptr)
        {
            const char* wildcardUTF8 = nullptr;

            for (;;)
            {
                struct dirent* const de = readdir (dir);

                if (de == nullptr)
                    break;

                if (wildcardUTF8 == nullptr)
                    wildcardUTF8 = wildCard.toUTF8();

                if (fnmatch (wildcardUTF8, de->d_name, FNM_CASEFOLD) == 0)
                {
                    filenameFound = CharPointer_UTF8 (de->d_name);

                    updateStatInfoForFile (parentDir + filenameFound, isDir, fileSize, modTime, creationTime, isReadOnly);

                    if (isHidden != nullptr)
                        *isHidden = filenameFound.startsWithChar ('.');

                    return true;
                }
            }
        }

        return false;
    }

    static String parseNameRecord (MemoryInputStream& input, const NameRecord& nameRecord,
                                   const int64 directoryOffset, const int64 offsetOfStringStorage)
    {
        String result;
        const int64 oldPos = input.getPosition();
        input.setPosition (directoryOffset + offsetOfStringStorage + ByteOrder::swapIfLittleEndian (nameRecord.offsetFromStorageArea));
        const int stringLength = (int) ByteOrder::swapIfLittleEndian (nameRecord.stringLength);
        const int platformID = ByteOrder::swapIfLittleEndian (nameRecord.platformID);

        if (platformID == 0 || platformID == 3)
        {
            const int numChars = stringLength / 2 + 1;
            HeapBlock<uint16> buffer;
            buffer.calloc (numChars + 1);
            input.read (buffer, stringLength);

            for (int i = 0; i < numChars; ++i)
                buffer[i] = ByteOrder::swapIfLittleEndian (buffer[i]);

            static_jassert (sizeof (CharPointer_UTF16::CharType) == sizeof (uint16));
            result = CharPointer_UTF16 ((CharPointer_UTF16::CharType*) buffer.getData());
        }
        else
        {
            HeapBlock<char> buffer;
            buffer.calloc (stringLength + 1);
            input.read (buffer, stringLength);
            result = CharPointer_UTF8 (buffer.getData());
        }

        input.setPosition (oldPos);
        return result;
    }

bool
LV2World::isPluginSupported (const LilvPlugin* plugin)
{
    // Required features support
    LilvNodes* nodes = lilv_plugin_get_required_features (plugin);
    LILV_FOREACH (nodes, iter, nodes)
    {
        const LilvNode* node (lilv_nodes_get (nodes, iter));
        if (! isFeatureSupported (CharPointer_UTF8 (lilv_node_as_uri (node)))) {
            return false; // Feature not supported
        }
    }
    lilv_nodes_free (nodes); nodes = nullptr;
    
    
    // Check this plugin's port types are supported
    const uint32 numPorts = lilv_plugin_get_num_ports (plugin);
    for (uint32 i = 0; i < numPorts; ++i)
    {
        // const LilvPort* port (lilv_plugin_get_port_by_index (plugin, i));
        // nothing here yet (or ever)
    }
    
    return true;
}

MainContentComponent::MainContentComponent()
  : myFont (Typeface::createSystemTypefaceFor (BinaryData::myFont_ttf, BinaryData::myFont_ttfSize)),
    myText (CharPointer_UTF8 ("H\xe2\x84\xae\xc5\x82\xc5\x82o W\xe2\x98\xba\xd2\x91\xc5\x82""d"))
{
    myFont.setHeight (100.0f);

    setSize (600, 400);
}

String
LV2Module::getClassLabel() const
{
   if (const LilvPluginClass* klass = lilv_plugin_get_class (plugin))
       if (const LilvNode* node = lilv_plugin_class_get_label (klass))
           return CharPointer_UTF8 (lilv_node_as_string (node));
   return String::empty;
}

String StringPool::getPooledString (const char* const newString)
{
    if (newString == nullptr || *newString == 0)
        return String();

    const ScopedLock sl (lock);
    garbageCollectIfNeeded();
    return addPooledString (strings, CharPointer_UTF8 (newString));
}

String InputStream::readString()
{
    MemoryBlock buffer (256);
    char* data = static_cast<char*> (buffer.getData());
    size_t i = 0;

    while ((data[i] = readByte()) != 0)
    {
        if (++i >= buffer.getSize())
        {
            buffer.setSize (buffer.getSize() + 512);
            data = static_cast<char*> (buffer.getData());
        }
    }

    return String (CharPointer_UTF8 (data),
                   CharPointer_UTF8 (data + i));
}