init.h

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/*
 * Copyright (C) 2001-2003 Peter J Jones (pjones@pmade.org)
 * All Rights Reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of the Author nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
 
/**
    @file
 
    This file contains the definition of the xslt::init class.
 */
 
#ifndef _xsltwrapp_init_h_
#define _xsltwrapp_init_h_
 
// xmlwrapp includes
#include "xmlwrapp/init.h"
#include "xmlwrapp/export.h"
 
/// XSLT library namespace
namespace xslt
{
 
/**
    The xslt::init class is used to configure the XSLT engine.
 
    If you want to use any of the xslt::init member functions, do so before
    you start any threads or use any other part of xsltwrapp. The member
    functions may alter global and/or static variables. In other words, this
    class is not thread safe.
 
    @note In xmlwrapp versions prior to 0.6.0, this class was used to initialize
          the library and exactly one instance had to be created before first
          use. This is no longer true: user code doesn't have to create any
          instances, but it @em can create as many instances as it wants.
 */
class init : public xml::init
{
public:
    XSLTWRAPP_API init();
    XSLTWRAPP_API ~init();
 
    /**
        This function controls whether or not the XSLT engine will process
        XInclusions by default while parsing the stylesheet. The default is
        true.
 
        @param flag True to enable XInclusing processing; False otherwise.
     */
    XSLTWRAPP_API static void process_xincludes(bool flag);
 
private:
    init(const init&) = delete;
    init& operator=(const init&) = delete;
 
    void init_library();
    void shutdown_library();
 
    static int ms_counter;
}; // end xslt::init class
 
 
// use a "nifty counter" to ensure that any source file that uses xsltwrapp
// will initialize the library prior to its first use
namespace
{
xslt::init g_xsltwrapp_initializer;
}
 
} // end xslt namespace
 
#endif // _xsltwrapp_init_h_