Quellcode-Bibliothek xmlreader.hxx Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
*   Licensed to the Apache Software Foundation (ASF) under one or more
*   contributor license agreements. See the NOTICE file distributed
*   with this work for additional information regarding copyright
*   ownership. The ASF licenses this file to you under the Apache
*   License, Version 2.0 (the "License"); you may not use this file
*   except in compliance with the License. You may obtain a copy of
*   the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/

#pragma once

#include <sal/config.h>

#include <stack>
#include <vector>

#include <osl/file.h>
#include <rtl/ustring.hxx>
#include <sal/types.h>
#include <xmlreader/detail/xmlreaderdllapi.hxx>
#include <xmlreader/pad.hxx>
#include <xmlreader/span.hxx>

namespace xmlreader {

class OOO_DLLPUBLIC_XMLREADER XmlReader {
public:
    explicit XmlReader(OUString fileUrl);

    ~XmlReader();

    enum { NAMESPACE_NONE = -2, NAMESPACE_UNKNOWN = -1, NAMESPACE_XML = 0 };

    enum class Text { NONE, Raw, Normalized };

    enum class Result { Begin, End, Text, Done };

    int registerNamespaceIri(Span const & iri);

    // RESULT_BEGIN: data = localName, ns = ns
    // RESULT_END: data, ns unused
    // RESULT_TEXT: data = text, ns unused
    Result nextItem(Text reportText, Span * data, int * nsId);

    bool nextAttribute(int * nsId, Span * localName);

    // the span returned by getAttributeValue is only valid until the next call
    // to nextItem or getAttributeValue
    Span getAttributeValue(bool fullyNormalize);

    int getNamespaceId(Span const & prefix) const;

    const OUString& getUrl() const { return fileUrl_;}

private:
    XmlReader(const XmlReader&) = delete;
    XmlReader& operator=(const XmlReader&) = delete;

    typedef std::vector< Span > NamespaceIris;

    // If NamespaceData (and similarly ElementData and AttributeData) is made
    // SAL_DLLPRIVATE, at least gcc 4.2.3 erroneously warns about
    // "'xmlreader::XmlReader' declared with greater visibility than the type of
    // its field 'xmlreader::XmlReader::namespaces_'" (and similarly for
    // elements_ and attributes_):

    struct NamespaceData {
        Span prefix;
        int nsId;

        NamespaceData():
            nsId(-1) {}

        NamespaceData(Span const & thePrefix, int theNsId):
            prefix(thePrefix), nsId(theNsId) {}
    };

    typedef std::vector< NamespaceData > NamespaceList;

    struct ElementData {
        Span name;
        NamespaceList::size_type inheritedNamespaces;
        int defaultNamespaceId;

        ElementData(
            Span const & theName,
            NamespaceList::size_type theInheritedNamespaces,
            int theDefaultNamespaceId):
            name(theName), inheritedNamespaces(theInheritedNamespaces),
            defaultNamespaceId(theDefaultNamespaceId)
        {}
    };

    typedef std::stack< ElementData > ElementStack;

    struct AttributeData {
        char const * nameBegin;
        char const * nameEnd;
        char const * nameColon;
        char const * valueBegin;
        char const * valueEnd;

        AttributeData(
            char const * theNameBegin, char const * theNameEnd,
            char const * theNameColon, char const * theValueBegin,
            char const * theValueEnd):
            nameBegin(theNameBegin), nameEnd(theNameEnd),
            nameColon(theNameColon), valueBegin(theValueBegin),
            valueEnd(theValueEnd)
        {}
    };

    typedef std::vector< AttributeData > Attributes;

    enum class State { Content, StartTag, EndTag, EmptyElementTag, Done };

    SAL_DLLPRIVATE char read() { return pos_ == end_ ? '\0' : *pos_++; }

    SAL_DLLPRIVATE char peek() const { return pos_ == end_ ? '\0' : *pos_; }

    SAL_DLLPRIVATE void normalizeLineEnds(Span const & text);

    SAL_DLLPRIVATE void skipSpace();

    SAL_DLLPRIVATE bool skipComment();

    SAL_DLLPRIVATE void skipProcessingInstruction();

    SAL_DLLPRIVATE void skipDocumentTypeDeclaration();

    SAL_DLLPRIVATE Span scanCdataSection();

    SAL_DLLPRIVATE bool scanName(char const ** nameColon);

    SAL_DLLPRIVATE int scanNamespaceIri(
        char const * begin, char const * end);

    SAL_DLLPRIVATE char const * handleReference(
        char const * position, char const * end);

    SAL_DLLPRIVATE Span handleAttributeValue(
        char const * begin, char const * end, bool fullyNormalize);

    SAL_DLLPRIVATE Result handleStartTag(int * nsId, Span * localName);

    SAL_DLLPRIVATE Result handleEndTag();

    SAL_DLLPRIVATE void handleElementEnd();

    SAL_DLLPRIVATE Result handleSkippedText(Span * data, int * nsId);

    SAL_DLLPRIVATE Result handleRawText(Span * text);

    SAL_DLLPRIVATE Result handleNormalizedText(Span * text);

    SAL_DLLPRIVATE static int toNamespaceId(NamespaceIris::size_type pos);

    OUString const fileUrl_;
    oslFileHandle fileHandle_;
    sal_uInt64 fileSize_;
    void * fileAddress_;
    NamespaceIris namespaceIris_;
    NamespaceList namespaces_;
    ElementStack elements_;
    char const * pos_;
    char const * end_;
    State state_;
    Attributes attributes_;
    Attributes::iterator currentAttribute_;
    bool firstAttribute_;
    Pad pad_;
};

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

quality100%

¤ Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.0.1Bemerkung: (vorverarbeitet) ¤

*Bot Zugriff

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.