C++ constData函数代码示例

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本文整理汇总了C++中constData函数的典型用法代码示例。如果您正苦于以下问题：C++ constData函数的具体用法？C++ constData怎么用？C++ constData使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了constData函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: print_message_to_buffer

static void
print_message_to_buffer(const QModelIndex &idx, GtkTextBuffer *buffer)
{
    if (idx.isValid()) {
        auto message = idx.data().value<QString>().toUtf8();
        auto sender = idx.data(static_cast<int>(Media::TextRecording::Role::AuthorDisplayname)).value<QString>().toUtf8();

        GtkTextIter iter;

        /* unless its the very first message, insert a new line */
        if (idx.row() != 0) {
            gtk_text_buffer_get_end_iter(buffer, &iter);
            gtk_text_buffer_insert(buffer, &iter, "\n", -1);
        }

        auto format_sender = g_strconcat(sender.constData(), ": ", NULL);
        gtk_text_buffer_get_end_iter(buffer, &iter);
        gtk_text_buffer_insert_with_tags_by_name(buffer, &iter,
                                                 format_sender, -1,
                                                 "bold", NULL);
        g_free(format_sender);

        /* if the sender name is too long, insert a new line after it */
        if (sender.length() > 20) {
            gtk_text_buffer_get_end_iter(buffer, &iter);
            gtk_text_buffer_insert(buffer, &iter, "\n", -1);
        }

        gtk_text_buffer_get_end_iter(buffer, &iter);
        gtk_text_buffer_insert(buffer, &iter, message.constData(), -1);

    } else {
        g_warning("QModelIndex in im model is not valid");
    }
}

开发者ID:eXcomm，项目名称:ring-client-gnome，代码行数:35，代码来源:chatview.cpp

示例2: writeVector

void writeVector(QDataStream& out, char ch, QVector<T> vec) {
    // Minimum number of bytes to consider compressing
    const int ATTEMPT_COMPRESSION_THRESHOLD_BYTES = 2000;

    out.device()->write(&ch, 1);
    out << (int32_t)vec.length();

    auto data { QByteArray::fromRawData((const char*)vec.constData(), vec.length() * sizeof(T)) };

    if (data.size() >= ATTEMPT_COMPRESSION_THRESHOLD_BYTES) {
        auto compressedDataWithLength { qCompress(data) };

        // qCompress packs a length uint32 at the beginning of the buffer, but the FBX format
        // does not expect it. This removes it.
        auto compressedData = QByteArray::fromRawData(
            compressedDataWithLength.constData() + sizeof(uint32_t), compressedDataWithLength.size() - sizeof(uint32_t));

        if (compressedData.size() < data.size()) {
            out << FBX_PROPERTY_COMPRESSED_FLAG;
            out << (int32_t)compressedData.size();
            out.writeRawData(compressedData.constData(), compressedData.size());
            return;
        }
    }

    out << FBX_PROPERTY_UNCOMPRESSED_FLAG;
    out << (int32_t)0;
    out.writeRawData(data.constData(), data.size());
}

开发者ID:AndrewMeadows，项目名称:hifi，代码行数:29，代码来源:FBXWriter.cpp

示例3: strtod

double Q3CString::toDouble(bool *ok) const
{
    char *end;
    double val = strtod(constData() ? constData() : "", &end);
    if (ok)
        *ok = (constData() && *constData() && (end == 0 || *end == '\0'));
    return val;
}

开发者ID:Fale，项目名称:qtmoko，代码行数:8，代码来源:q3cstring.cpp

示例4: warning

time_t Path::lastModified() const
{
    struct stat st;
    if (stat(constData(), &st) == -1) {
        warning("Stat failed for %s", constData());
        return 0;
    }
    return st.st_mtime;
}

开发者ID:jmataraz，项目名称:rct，代码行数:9，代码来源:Path.cpp

示例5: QLatin1String

QString DefaultDemangler::demangle(const QString &symbol) const {
    int status;
    auto byteArray = symbol.toLatin1();
    if (auto output = std::unique_ptr<char[], FreeDeleter>(__cxa_demangle(byteArray.constData(), nullptr, nullptr, &status))) {
        return QLatin1String(output.get());
    } else if (auto output = std::unique_ptr<char[], FreeDeleter>(__unDName(nullptr, byteArray.constData(), 0, 0))) {
        return QLatin1String(output.get());
    } else {
        return QString();
    }
}

开发者ID:jiaoyk，项目名称:snowman，代码行数:11，代码来源:DefaultDemangler.cpp

示例6: warning

uint64_t Path::lastModifiedMs() const
{
    struct stat st;
    if (stat(constData(), &st) == -1) {
        warning("Stat failed for %s", constData());
        return 0;
    }
#ifdef HAVE_STATMTIM
    return st.st_mtim.tv_sec * static_cast<uint64_t>(1000) + st.st_mtim.tv_nsec / static_cast<uint64_t>(1000000);
#else
    return st.st_mtime * static_cast<uint64_t>(1000);
#endif
}

开发者ID:terranpro，项目名称:rct，代码行数:13，代码来源:Path.cpp

示例7: wordexp

bool Path::resolve(ResolveMode mode, const Path &cwd, bool *changed)
{
    if (changed)
        *changed = false;
    if (startsWith('~')) {
        wordexp_t exp_result;
        wordexp(constData(), &exp_result, 0);
        operator=(exp_result.we_wordv[0]);
        wordfree(&exp_result);
    }
    if (*this == ".")
        clear();
    if (mode == MakeAbsolute) {
        if (isAbsolute())
            return true;
        const Path copy = (cwd.isEmpty() ? Path::pwd() : cwd.ensureTrailingSlash()) + *this;
        if (copy.exists()) {
            if (changed)
                *changed = true;
            operator=(copy);
            return true;
        }
        return false;
    }

    if (!cwd.isEmpty() && !isAbsolute()) {
        Path copy = cwd + '/' + *this;
        if (copy.resolve(RealPath, Path(), changed)) {
            operator=(copy);
            return true;
        }
    }

    {
        char buffer[PATH_MAX + 2];
        if (realpath(constData(), buffer)) {
            if (isDir()) {
                const int len = strlen(buffer);
                assert(buffer[len] != '/');
                buffer[len] = '/';
                buffer[len + 1] = '\0';
            }
            if (changed && strcmp(buffer, constData()))
                *changed = true;
            String::operator=(buffer);
            return true;
        }
    }

    return false;
}

开发者ID:emdeesee，项目名称:rct，代码行数:51，代码来源:Path.cpp

示例8: vaoBinder

void GLRasterTexture::initializeGL(bool coreProfile) {
    if(m_data.size() == 0) return;
    m_program = new QOpenGLShaderProgram;
    m_program->addShaderFromSourceCode(QOpenGLShader::Vertex, coreProfile ? vertexShaderSourceCore : vertexShaderSource);
    m_program->addShaderFromSourceCode(QOpenGLShader::Fragment, coreProfile ? fragmentShaderSourceCore : fragmentShaderSource);
    m_program->bindAttributeLocation("vertex", 0);
    m_program->bindAttributeLocation("texCoord", 1);
    m_program->link();

    m_program->bind();
    m_projMatrixLoc = m_program->uniformLocation("projMatrix");
    m_mvMatrixLoc = m_program->uniformLocation("mvMatrix");
    m_textureSamplerLoc = m_program->uniformLocation("texture");

    m_vao.create();
    QOpenGLVertexArrayObject::Binder vaoBinder(&m_vao);

    // Setup our vertex buffer object.
    m_vbo.create();
    m_vbo.bind();
    m_vbo.allocate(constData(), m_count * sizeof(GLfloat));

    // Store the vertex attribute bindings for the program.
    setupVertexAttribs();

    m_program->setUniformValue(m_textureSamplerLoc, 0);

    m_program->release();
    m_built = true;
}

开发者ID:SpaceGroupUCL，项目名称:depthmapX，代码行数:30，代码来源:glrastertexture.cpp

示例9: lastIndexOf

const char * Path::extension() const
{
    const int dot = lastIndexOf('.');
    if (dot == -1 || dot + 1 == size())
        return 0;
    return constData() + dot + 1;
}

开发者ID:terranpro，项目名称:rct，代码行数:7，代码来源:Path.cpp

示例10: constData

ulong Q3CString::toULong(bool *ok) const
{
    const char *p = constData();
    ulong val=0;
    const ulong max_mult = 429496729;
    bool is_ok = false;
    if (!p)
        goto bye;
    while (isspace((uchar) *p))                // skip leading space
        p++;
    if (*p == '+')
        p++;
    if (!isdigit((uchar) *p))
        goto bye;
    while (isdigit((uchar) *p)) {
        if (val > max_mult || (val == max_mult && (*p-'0') > 5))
            goto bye;
        val = 10*val + (*p++ - '0');
    }
    while (isspace((uchar) *p))                // skip trailing space
        p++;
    if (*p == '\0')
        is_ok = true;
bye:
    if (ok)
        *ok = is_ok;
    return is_ok ? val : 0;
}

开发者ID:Fale，项目名称:qtmoko，代码行数:28，代码来源:q3cstring.cpp

示例11: checkForBomAndNonAscii

BomAsciiCheckResult
checkForBomAndNonAscii(QString const &fileName) {
  QFile file{fileName};
  if (!file.open(QIODevice::ReadOnly))
    return {};

  auto content = file.readAll();
  file.close();

  auto result   = BomAsciiCheckResult{};
  auto dataSize = content.size();
  auto dataPtr  = reinterpret_cast<unsigned char const *>(content.constData());
  auto dataEnd  = dataPtr + dataSize;

  mm_text_io_c::detect_byte_order_marker(dataPtr, dataSize, result.byteOrder, result.bomLength);

  dataPtr += result.bomLength;

  while (dataPtr < dataEnd) {
    if (*dataPtr > 127) {
      result.containsNonAscii = true;
      break;
    }

    ++dataPtr;
  }

  return result;
}

开发者ID:rootslinux，项目名称:mkvtoolnix，代码行数:29，代码来源:file.cpp

示例12: constData

Path Path::toTilde() const
{
    const Path home = Path::home();
    if (startsWith(home))
        return String::format<64>("~/%s", constData() + home.size());
    return *this;
}

开发者ID:jmataraz，项目名称:rct，代码行数:7，代码来源:Path.cpp

示例13: main

int main (int argc, char *argv[]) 
{
    if (!preprocessCommands(&argc, argv, NULL, NULL)) {
    	xexit(0); 
	}

    printf("Resource Reading...\n");
    ResourceSource* res = setupParameters(true, &argc, argv);

    ConstData constData(*res);
    Intervals intervals(*res);
    BeamParams beamParams(*res);

    FILE* massOut = openOutDataFile(*res, "mass_out");
    FILE* crossSectionOut = openOutDataFile(*res, "total_cross_section_out");
    printFileHeaders(massOut, crossSectionOut);

    printf("Main loop...\n");
    DataSeparator massSeparator(massOut), csSeparator(crossSectionOut);
    loopMassMuTan(constData, intervals, beamParams, massSeparator, csSeparator,
                  massOut, crossSectionOut);
    printf("Resource releasing...\n");

    fclose(crossSectionOut);
    fclose(massOut);

    delete res;

    printf("Done...\n");
    xexit(0);

}

开发者ID:ibukanov，项目名称:ahome，代码行数:32，代码来源:main.C

示例14: lastIndexOf

const char * Path::fileName(int *len) const
{
    const int idx = lastIndexOf('/') + 1;
    if (len)
        *len = size() - idx;
    return constData() + idx;
}

开发者ID:jmataraz，项目名称:rct，代码行数:7，代码来源:Path.cpp

示例15: resolve

bool Path::resolve(ResolveMode mode, const Path &cwd)
{
    if (mode == MakeAbsolute) {
        if (isAbsolute())
            return true;
        const Path copy = (cwd.isEmpty() ? Path::pwd() : cwd) + *this;
        if (copy.exists()) {
            operator=(copy);
            return true;
        }
        return false;
    } else {
        if (!cwd.isEmpty() && !isAbsolute()) {
            Path copy = cwd + '/' + *this;
            if (copy.resolve(RealPath)) {
                operator=(copy);
                return true;
            }
        }

        {
            char buffer[PATH_MAX + 2];
            if (realpath(constData(), buffer)) {
                String::operator=(buffer);
                return true;
            }
        }
    }
    return false;
}

开发者ID:terranpro，项目名称:rct，代码行数:30，代码来源:Path.cpp

示例16: obtainImage

bool OsmAnd::ImageMapLayerProvider::obtainData(
    const IMapDataProvider::Request& request_,
    std::shared_ptr<IMapDataProvider::Data>& outData,
    std::shared_ptr<Metric>* const pOutMetric /*= nullptr*/)
{
    const auto& request = MapDataProviderHelpers::castRequest<Request>(request_);
    if (pOutMetric)
        pOutMetric->reset();

    if (!supportsNaturalObtainData())
        return MapDataProviderHelpers::nonNaturalObtainData(this, request, outData, pOutMetric);

    // Obtain image data
    const auto image = obtainImage(request);
    if (image.isNull())
    {
        outData.reset();
        return true;
    }

    // Decode image data
    std::shared_ptr<SkBitmap> bitmap(new SkBitmap());
    SkMemoryStream imageStream(image.constData(), image.length(), false);
    if (!SkImageDecoder::DecodeStream(&imageStream, bitmap.get(), SkColorType::kUnknown_SkColorType, SkImageDecoder::kDecodePixels_Mode))
        return false;

    // Return tile
    outData.reset(new IRasterMapLayerProvider::Data(
        request.tileId,
        request.zoom,
        getAlphaChannelPresence(),
        getTileDensityFactor(),
        bitmap));
    return true;
}

开发者ID:biddyweb，项目名称:OsmAnd-core，代码行数:35，代码来源:ImageMapLayerProvider.cpp

示例17: qGitThrow

OId Commit::amend(const Tree& tree, const QString& ref, const QString& message, const Signature& author, const Signature& committer)
{
    OId oid;
    qGitThrow(git_commit_amend(oid.data(), constData(), ref.isEmpty() ? NULL : PathCodec::toLibGit2(ref).constData(), author.data(), committer.data(),
                               NULL, message.isNull() ? NULL : message.toUtf8().constData(), tree.constData()));
    return oid;
}

开发者ID:amonchakai，项目名称:FoxHub，代码行数:7，代码来源:qgitcommit.cpp

示例18: Q_ASSERT

 Matrix<T>& Matrix<T>::operator*=( const qreal& Value )
 {
   Q_ASSERT(constData() && size());
   int srcStride1(bytesPerLine());
   int srcStride2(bytesPerElement());
   if (type() == CV_64F)
   {
     Ipp64f* pSrc(reinterpret_cast<Ipp64f*>(data()));
     const Ipp64f val(static_cast<const Ipp64f>(Value));
     IppStatus status(ippmMul_mc_64f(pSrc, srcStride1, srcStride2,
                                     val,
                                     pSrc, srcStride1, srcStride2, cols(), rows()));
     Q_ASSERT(status == ippStsNoErr);
   }
   else
   {
     Q_ASSERT(!"CHECK");
     const T mulValue(static_cast<const T>(Value));
     for (int rowIndex(0); rowIndex < rows(); rowIndex++)
     {
       T* rowPtr(row(rowIndex));
       for (int colIndex(0); colIndex < cols(); colIndex++, rowPtr++)
       {
         *rowPtr *= mulValue;
       }
     }
   }
   return *this;
 }

开发者ID:igrechuhin，项目名称:ComputerVision，代码行数:29，代码来源:Matrix.cpp

示例19: Q_ASSERT

void SqlQuery::bindValue(int pos, const QVariant& value)
{
    int res = -1;
    Q_ASSERT(_stmt);
    if( _stmt ) {
        switch (value.type()) {
        case QVariant::Int:
        case QVariant::Bool:
            res = sqlite3_bind_int(_stmt, pos, value.toInt());
            break;
        case QVariant::Double:
            res = sqlite3_bind_double(_stmt, pos, value.toDouble());
            break;
        case QVariant::UInt:
        case QVariant::LongLong:
            res = sqlite3_bind_int64(_stmt, pos, value.toLongLong());
            break;
        case QVariant::DateTime: {
            const QDateTime dateTime = value.toDateTime();
            const QString str = dateTime.toString(QLatin1String("yyyy-MM-ddThh:mm:ss.zzz"));
            res = sqlite3_bind_text16(_stmt, pos, str.utf16(),
                                      str.size() * sizeof(ushort), SQLITE_TRANSIENT);
            break;
        }
        case QVariant::Time: {
            const QTime time = value.toTime();
            const QString str = time.toString(QLatin1String("hh:mm:ss.zzz"));
            res = sqlite3_bind_text16(_stmt, pos, str.utf16(),
                                      str.size() * sizeof(ushort), SQLITE_TRANSIENT);
            break;
        }
        case QVariant::String: {
            if( !value.toString().isNull() ) {
                // lifetime of string == lifetime of its qvariant
                const QString *str = static_cast<const QString*>(value.constData());
                res = sqlite3_bind_text16(_stmt, pos, str->utf16(),
                                          (str->size()) * sizeof(QChar), SQLITE_TRANSIENT);
            } else {
                res = sqlite3_bind_null(_stmt, pos);
            }
            break; }
        case QVariant::ByteArray: {
            auto ba = value.toByteArray();
            res = sqlite3_bind_text(_stmt, pos, ba.constData(), ba.size(), SQLITE_TRANSIENT);
            break;
        }
        default: {
            QString str = value.toString();
            // SQLITE_TRANSIENT makes sure that sqlite buffers the data
            res = sqlite3_bind_text16(_stmt, pos, str.utf16(),
                                      (str.size()) * sizeof(QChar), SQLITE_TRANSIENT);
            break; }
        }
    }
    if (res != SQLITE_OK) {
        qDebug() << Q_FUNC_INFO << "ERROR" << value << res;
    }
    Q_ASSERT( res == SQLITE_OK );
}

开发者ID:Hopebaytech，项目名称:client，代码行数:59，代码来源:ownsql.cpp

示例20: fileSize

int64_t Path::fileSize() const
{
    struct stat st;
    if (!stat(constData(), &st)) {// && st.st_mode == S_IFREG)
        return st.st_size;
    }
    return -1;
}

开发者ID:jmataraz，项目名称:rct，代码行数:8，代码来源:Path.cpp

注：本文中的constData函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。