C++ IFstream::getLine方法代码示例

// Reads points section. Read region as well?
void readPoints
(
    IFstream& is,
    DynamicList<point>& points,     // coordinates
    DynamicList<label>& unvPointID  // unv index
)
{
    Sout<< "Starting reading points at line " << is.lineNumber() << '.' << endl;

    static bool hasWarned = false;

    while (true)
    {
        string line;
        is.getLine(line);

        label pointI = readLabel(IStringStream(line.substr(0, 10))());

        if (pointI == -1)
        {
            break;
        }
        else if (pointI != points.size()+1 && !hasWarned)
        {
            hasWarned = true;

            IOWarningIn
            (
                "readPoints(IFstream&, label&, DynamicList<point>"
                ", DynamicList<label>&)",
                is
            )   << "Points not in order starting at point " << pointI
                //<< " at line " << is.lineNumber()
                //<< abort(FatalError);
                << endl;
        }

        point pt;
        is.getLine(line);
        pt[0] = readUnvScalar(line.substr(0, 25));
        pt[1] = readUnvScalar(line.substr(25, 25));
        pt[2] = readUnvScalar(line.substr(50, 25));

        unvPointID.append(pointI);
        points.append(pt);
    }

    points.shrink();
    unvPointID.shrink();

    Sout<< "Read " << points.size() << " points." << endl;
}

// Reads past -1 and reads element type
label readTag(IFstream& is)
{
    string tag;
    do
    {
        if (!is.good())
        {
            return -1;
        }

        string line;

        is.getLine(line);

        if (line.size() < 6)
        {
            return -1;
        }

        tag = line.substr(0, 6);

    } while (tag == SEPARATOR);

    return readLabel(IStringStream(tag)());
}

// Read up to line starting with cmd. Sets args to rest of line.
// Returns true if found, false if stream is not good anymore.
bool Foam::fileFormats::AC3DsurfaceFormatCore::cueTo
(
    IFstream& is,
    const string& cmd,
    string& args
)
{
    while (is.good())
    {
        string line;
        is.getLine(line);

        string::size_type space = line.find(' ');

        if (space != string::npos)
        {
            if (line.substr(0, space) == cmd)
            {
                args = line.substr(space+1);

                return true;
            }
        }
    }
    return false;
}

// Reads unit section
void readUnits
(
    IFstream& is,
    scalar& lengthScale,
    scalar& forceScale,
    scalar& tempScale,
    scalar& tempOffset
)
{
    Sout<< "Starting reading units at line " << is.lineNumber() << '.' << endl;

    string line;
    is.getLine(line);

    label l = readLabel(IStringStream(line.substr(0, 10))());
    Sout<< "l:" << l << endl;

    string units(line.substr(10, 20));
    Sout<< "units:" << units << endl;

    label unitType = readLabel(IStringStream(line.substr(30, 10))());
    Sout<< "unitType:" << unitType << endl;

    // Read lengthscales
    is.getLine(line);

    lengthScale = readUnvScalar(line.substr(0, 25));
    forceScale = readUnvScalar(line.substr(25, 25));
    tempScale = readUnvScalar(line.substr(50, 25));

    is.getLine(line);
    tempOffset = readUnvScalar(line.substr(0, 25));

    Sout<< "Unit factors:" << nl
        << "    Length scale       : " << lengthScale << nl
        << "    Force scale        : " << forceScale << nl
        << "    Temperature scale  : " << tempScale << nl
        << "    Temperature offset : " << tempOffset << nl
        << endl;
}

Foam::string Foam::fileFormats::surfaceFormatsCore::getLineNoComment
(
    IFstream& is
)
{
    string line;
    do
    {
        is.getLine(line);
    }
    while ((line.empty() || line[0] == '#') && is.good());

    return line;
}

// Skip
void skipSection(IFstream& is)
{
    Info<< "Skipping section at line " << is.lineNumber() << '.' << endl;

    string line;

    while (is.good())
    {
        is.getLine(line);

        if (isSeparator(line))
        {
            break;
        }
    }
}

// Skips till end of section. Returns false if end of file.
bool skipSection(IFstream& inFile)
{
    string line;
    do
    {
        inFile.getLine(line);

        if (!inFile.good())
        {
            return false;
        }
    }
    while (line.size() < 4 || line.substr(0, 4) != "$End");

    return true;
}

// Reads and prints header
void readHeader(IFstream& is)
{
    string line;

    while (is.good())
    {
        is.getLine(line);

        if (isSeparator(line))
        {
            break;
        }
        else
        {
            Sout<< line << endl;
        }
    }
}

static bool readCmd(IFstream& ACfile, string& cmd, string& args)
{
    if (ACfile.good())
    {
        string line;
        ACfile.getLine(line);

        string::size_type space = line.find(' ');

        if (space != string::npos)
        {
            cmd  = line.substr(0, space);
            args = line.substr(space+1);

            return true;
        }
    }
    return false;
}

// Read up to line starting with cmd. Sets args to rest of line.
// Returns true if found, false if stream is not good anymore.
static bool readUpto
(
    const string& cmd,
    IFstream& ACfile,
    string& args
)
{
    while (ACfile.good())
    {
        string line;
        ACfile.getLine(line);

        string::size_type space = line.find(' ');

        if (space != string::npos && line.substr(0, space) == cmd)
        {
            args = line.substr(space+1);
            return true;
        }
    }
    return false;
}

bool Foam::fileFormats::AC3DsurfaceFormatCore::readCmd
(
    IFstream& is,
    string& cmd,
    string& args
)
{
    if (is.good())
    {
        string line;
        is.getLine(line);

        string::size_type space = line.find(' ');

        if (space != string::npos)
        {
            cmd  = line.substr(0, space);
            args = line.substr(space+1);

            return true;
        }
    }
    return false;
}

// Reads cells section. Read region as well? Not handled yet but should just
// be a matter of reading corresponding to boundaryFaces the correct property
// and sorting it later on.
void readCells
(
    IFstream& is,
    DynamicList<cellShape>& cellVerts,
    DynamicList<label>& cellMaterial,
    DynamicList<label>& boundaryFaceIndices,
    DynamicList<face>& boundaryFaces
)
{
    Sout<< "Starting reading cells at line " << is.lineNumber() << '.' << endl;

    const cellModel& hex = *(cellModeller::lookup("hex"));
    const cellModel& prism = *(cellModeller::lookup("prism"));
    const cellModel& tet = *(cellModeller::lookup("tet"));

    labelHashSet skippedElements;

    labelHashSet foundFeType;

    while (true)
    {
        string line;
        is.getLine(line);

        if (isSeparator(line))
        {
            break;
        }

        IStringStream lineStr(line);
        label cellI, feID, physProp, matProp, colour, nNodes;
        lineStr >> cellI >> feID >> physProp >> matProp >> colour >> nNodes;

        if (foundFeType.insert(feID))
        {
            Info<< "First occurrence of element type " << feID
                << " for cell " << cellI << " at line "
                << is.lineNumber() << endl;
        }

        if (feID == 11)
        {
            // Rod. Skip.
            is.getLine(line);
            is.getLine(line);
        }
        else if (feID == 171)
        {
            // Rod. Skip.
            is.getLine(line);
        }
        else if (feID == 41 || feID == 91)
        {
            // Triangle. Save - used for patching later on.
            is.getLine(line);

            face cVerts(3);
            IStringStream lineStr(line);
            lineStr >> cVerts[0] >> cVerts[1] >> cVerts[2];
            boundaryFaces.append(cVerts);
            boundaryFaceIndices.append(cellI);
        }
        else if (feID == 44 || feID == 94)