C++ Istream::name方法代码示例

void Foam::functionEntries::ifeqEntry::skipUntil
(
    DynamicList<filePos>& stack,
    const dictionary& parentDict,
    const word& endWord,
    Istream& is
)
{
    while (!is.eof())
    {
        token t;
        readToken(t, is);
        if (t.isWord())
        {
            if (t.wordToken() == "#if" || t.wordToken() == "#ifeq")
            {
                stack.append(filePos(is.name(), is.lineNumber()));
                skipUntil(stack, parentDict, "#endif", is);
                stack.remove();
            }
            else if (t.wordToken() == endWord)
            {
                return;
            }
        }
    }

    FatalIOErrorInFunction(parentDict)
        << "Did not find matching " << endWord << exit(FatalIOError);
}

bool Foam::functionEntries::includeEntry::execute
(
    dictionary& parentDict,
    Istream& is
)
{
    const fileName rawFName(is);
    const fileName fName
    (
        includeFileName(is.name().path(), rawFName, parentDict)
    );
    IFstream ifs(fName);

    if (ifs)
    {
        if (Foam::functionEntries::includeEntry::log)
        {
            Info<< fName << endl;
        }
        parentDict.read(ifs);
        return true;
    }
    else
    {
        FatalIOErrorInFunction
        (
            is
        )   << "Cannot open include file "
            << (ifs.name().size() ? ifs.name() : rawFName)
            << " while reading dictionary " << parentDict.name()
            << exit(FatalIOError);

        return false;
    }
}

bool Foam::entry::getKeyword(keyType& keyword, Istream& is)
{
    token keywordToken;

    // Read the next valid token discarding spurious ';'s
    do
    {
        if
        (
            is.read(keywordToken).bad()
         || is.eof()
         || !keywordToken.good()
        )
        {
            return false;
        }
    }
    while (keywordToken == token::END_STATEMENT);

    // If the token is a valid keyword set 'keyword' return true...
    if (keywordToken.isWord())
    {
        keyword = keywordToken.wordToken();
        return true;
    }
    else if (keywordToken.isString())
    {
        // Enable wildcards
        keyword = keywordToken.stringToken();
        return true;
    }
    // If it is the end of the dictionary or file return false...
    else if (keywordToken == token::END_BLOCK || is.eof())
    {
        return false;
    }
    // Otherwise the token is invalid
    else
    {
        cerr<< "--> FOAM Warning : " << std::endl
            << "    From function "
            << "entry::getKeyword(keyType&, Istream&)" << std::endl
            << "    in file " << __FILE__
            << " at line " << __LINE__ << std::endl
            << "    Reading " << is.name().c_str() << std::endl
            << "    found " << keywordToken << std::endl
            << "    expected either " << token::END_BLOCK << " or EOF"
            << std::endl;

        return false;
    }
}

Foam::primitiveEntry::primitiveEntry(const keyType& key, Istream& is)
:
    entry(key),
    ITstream
    (
        is.name() + '.' + key,
        tokenList(10),
        is.format(),
        is.version()
    )
{
    readEntry(dictionary::null, is);
}

Foam::fileName Foam::functionEntries::includeEntry::includeFileName
(
    Istream& is
)
{
    fileName fName(is);
    fName.expand();

    if (fName.empty() || fName.isAbsolute())
    {
        return fName;
    }
    else
    {
        // relative name
        return fileName(is.name()).path()/fName;
    }
}

bool Foam::functionEntry::execute
(
    const word& functionName,
    const dictionary& parentDict,
    primitiveEntry& entry,
    Istream& is
)
{
    is.fatalCheck
    (
        "functionEntry::execute"
        "(const word&, const dictionary&, primitiveEntry&, Istream&)"
    );

    if (!executeprimitiveEntryIstreamMemberFunctionTablePtr_)
    {
        cerr<<"functionEntry::execute"
            << "(const word&, const dictionary&, primitiveEntry&, Istream&)"
            << " not yet initialized, function = "
            << functionName.c_str() << std::endl;

        // return true to keep reading anyhow
        return true;
    }

    executeprimitiveEntryIstreamMemberFunctionTable::iterator mfIter =
        executeprimitiveEntryIstreamMemberFunctionTablePtr_->find(functionName);

    if (mfIter == executeprimitiveEntryIstreamMemberFunctionTablePtr_->end())
    {
        FatalErrorIn
        (
            "functionEntry::execute"
            "(const word&, const dictionary&, primitiveEntry&, Istream&)"
        )   << "Unknown functionEntry '" << functionName
            << "' in " << is.name() << " near line " << is.lineNumber()
            << endl << endl
            << "Valid functionEntries are :" << endl
            << executeprimitiveEntryIstreamMemberFunctionTablePtr_->toc()
            << exit(FatalError);
    }

    return mfIter()(parentDict, entry, is);
}

Foam::fileName Foam::functionEntries::includeEntry::includeFileName
(
    Istream& is,
    const dictionary& dict
)
{
    fileName fName(is);
    // Substitute dictionary and environment variables. Allow empty
    // substitutions.
    stringOps::inplaceExpand(fName, dict, true, true);

    if (fName.empty() || fName.isAbsolute())
    {
        return fName;
    }
    else
    {
        // relative name
        return fileName(is.name()).path()/fName;
    }
}

bool Foam::functionEntries::ifeqEntry::execute
(
    DynamicList<filePos>& stack,
    dictionary& parentDict,
    Istream& is
)
{
    const label nNested = stack.size();

    stack.append(filePos(is.name(), is.lineNumber()));

    // Read first token and expand any string
    token cond1(is);
    cond1 = expand(parentDict, cond1);

    // Read second token and expand any string
    token cond2(is);
    cond2 = expand(parentDict, cond2);

    const bool equal = equalToken(cond1, cond2);

    // Info<< "Using #" << typeName << " " << cond1
    //     << " == " << cond2
    //     << " at line " << stack.last().second()
    //     << " in file " <<  stack.last().first() << endl;

    bool ok = ifeqEntry::execute(equal, stack, parentDict, is);

    if (stack.size() != nNested)
    {
        FatalIOErrorInFunction(parentDict)
            << "Did not find matching #endif for condition starting"
            << " at line " << stack.last().second()
            << " in file " <<  stack.last().first() << exit(FatalIOError);
    }

    return ok;
}

bool Foam::IOobject::readHeader(Istream& is)
{
    if (IOobject::debug)
    {
        Info<< "IOobject::readHeader(Istream&) : reading header for file "
            << is.name() << endl;
    }

    // Check Istream not already bad
    if (!is.good())
    {
        if (rOpt_ == MUST_READ || rOpt_ == MUST_READ_IF_MODIFIED)
        {
            FatalIOErrorIn("IOobject::readHeader(Istream&)", is)
                << " stream not open for reading essential object from file "
                << is.name()
                << exit(FatalIOError);
        }

        if (IOobject::debug)
        {
            SeriousIOErrorIn("IOobject::readHeader(Istream&)", is)
                << " stream not open for reading from file "
                << is.name() << endl;
        }

        return false;
    }

    token firstToken(is);

    if
    (
        is.good()
     && firstToken.isWord()
     && firstToken.wordToken() == "FoamFile"
    )
    {
        dictionary headerDict(is);

        is.version(headerDict.lookup("version"));
        is.format(headerDict.lookup("format"));
        headerClassName_ = word(headerDict.lookup("class"));

        const word headerObject(headerDict.lookup("object"));
        if (IOobject::debug && headerObject != name())
        {
            IOWarningIn("IOobject::readHeader(Istream&)", is)
                << " object renamed from "
                << name() << " to " << headerObject
                << " for file " << is.name() << endl;
        }

        // The note entry is optional
        headerDict.readIfPresent("note", note_);
    }
    else
    {
        SeriousIOErrorIn("IOobject::readHeader(Istream&)", is)
            << "First token could not be read or is not the keyword 'FoamFile'"
            << nl << nl << "Check header is of the form:" << nl << endl;

        writeHeader(Info);

        return false;
    }

    // Check stream is still OK
    if (is.good())
    {
        objState_ = GOOD;
    }
    else
    {
        if (rOpt_ == MUST_READ || rOpt_ == MUST_READ_IF_MODIFIED)
        {
            FatalIOErrorIn("IOobject::readHeader(Istream&)", is)
                << " stream failure while reading header"
                << " on line " << is.lineNumber()
                << " of file " << is.name()
                << " for essential object" << name()
                << exit(FatalIOError);
        }

        if (IOobject::debug)
        {
            Info<< "IOobject::readHeader(Istream&) :"
                << " stream failure while reading header"
                << " on line " << is.lineNumber()
                << " of file " << is.name() << endl;
        }

        objState_ = BAD;

        return false;
    }

    if (IOobject::debug)
    {
        Info<< " .... read" << endl;
//.........这里部分代码省略.........