commreg.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: commreg.cpp,v 1.10.32.3 2004/07/09 01:48:15 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
 * RealNetworks.  You may not use this file except in compliance with
 * the RPSL or, if you have a valid RCSL with RealNetworks applicable
 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
 * contents of the file.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
 * This file, and the files included with this file, is distributed
 * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
 * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
 * Technology Compatibility Kit Test Suite(s) Location:
 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

#include "hxcom.h"
// #include <stdio.h>
#include "hlxclib/stdlib.h"
#include "hlxclib/string.h"

#include "hxtypes.h"
#include "debug.h"
#include "ihxpckts.h"
#include "hxmon.h"
#include "hxstrutl.h"
#include "chxpckts.h"
#include "db_misc.h"
#include "key.h"

#include "watchlst.h"
#include "property.h"
#include "db_dict_abs.h"
#include "db_dict.h"
#include "id.h"
#include "commreg.h"

#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE		
static const char HX_THIS_FILE[] = __FILE__;
#endif

CommonRegistry::CommonRegistry()
              : _count(0)
	      , m_pWatchList(NULL)
	      , m_lWatchCount(0)
	      , m_LastError(HXR_OK)
{
    _logdb_imp = new DB_dict;
    if(!_logdb_imp)
    {
        m_LastError = HXR_OUTOFMEMORY;
    }
    _ids = new CHXID(1000);
    if(!_ids)
    {
        m_LastError = HXR_OUTOFMEMORY;
    }

    DPRINTF(D_REGISTRY, ("CommonRegistry::CommonRegistry -- _logdb_imp(%p), "
                         "_ids(%p)\n", _logdb_imp, _ids));
}

CommonRegistry::~CommonRegistry()
{
    if (_logdb_imp)
	delete _logdb_imp;
    if (_ids)
	delete _ids;
}

/*
 *  Function Name:  	AddComp
 *  Input Params:   	char * prop_name
 *  Return Value:   	UINT32
 *  Description:
 *  	function for adding PT_COMPOSITE nodes in the log database.
 *  PT_COMPOSITE nodes can contain other nodes, this is the structure
 *  demanded by the hierarchical storage.
 */
UINT32
CommonRegistry::AddComp(const char* prop_name)
{
    DPRINTF(D_REGISTRY, ("CommonRegistry::AddComp(%s)\n", prop_name));

    HX_RESULT	theErr = HXR_OK;
    DB_node* d = 0;
    Property* p = 0;
    Key* k = new Key(prop_name);
    if(!k)
    {
        return 0;
    }
    int len = k->size();
    char* curr_key_str = new char[len];
    if(!curr_key_str)
    {
        HX_DELETE(k);
        return 0;
    }
    DB_implem* ldb = _logdb_imp;
    DB_node*	new_d = NULL;
    BOOL read_only = FALSE;

    /*
     * check if all but the last sub-strings are already present
     * eg.
     *     if foo.bar.moo is to be added then
     *        the following loop checks is "foo" and "bar"
     *        have already been created
     *     after the while loop one final check is made to check
     *     if "moo" NOT already present to avoid adding a DUPLICATE
     */
    *curr_key_str = '\0';
    while(!k->last_sub_str())
    {
        k->append_sub_str(curr_key_str, len);
	if (p && p->get_type() == PT_COMPOSITE)
	    p->get_db_val(&ldb);
	if (!ldb)
	{
	    DPRINTF(D_INFO, ("%s -- %s has NO Properties under it!\n",
		   prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
	d = ldb->find(curr_key_str);
	if (!d)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s was NOT FOUND\n",
	                         prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
	p = d->get_data();
        if (!p)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO DATA\n",
	                         prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
	read_only = p->is_read_only();
	if (read_only)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s is READ ONLY\n",
	                         prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
    }
    if (p && p->get_type() == PT_COMPOSITE)
	p->get_db_val(&ldb);
    k->append_sub_str(curr_key_str, len);
    if (ldb->find(curr_key_str))
    {
	DPRINTF(D_REGISTRY, ("%s -- is ALREADY PRESENT!\n", k->get_key_str()));
	theErr = HXR_FAILED;
	goto cleanup;
    }

    // everything is alright add the new property
    new_d = _addComp(k, curr_key_str, ldb);

    AddDone(ldb, new_d, d, p);

cleanup:

    HX_VECTOR_DELETE(curr_key_str);

    if (HXR_OK != theErr)
    {
	if (k)
	{
	    delete k;
	    k = NULL;
	}

	return 0;
    }
    else
    {
	return new_d->get_id();
    }
}

UINT32			
CommonRegistry::_buildSubstructure4Prop(const char* pFailurePoint,
					const char* pProp)
{
    /*
     * A lower composite was not there.
     * Add all of the composites up the to prop.
     */
    UINT32 len = strlen(pProp) + 1;
    Key* lame = new Key(pProp);
    char* temp_key_str = new char[len];
    *temp_key_str = 0;
    while (strlen(temp_key_str) < strlen(pFailurePoint))
    {
	lame->append_sub_str(temp_key_str, len);
    }
    int ret;
    while ((ret = AddComp(temp_key_str)) != 0)
    {
	if (lame->last_sub_str())
	{
	    break;
	}
	lame->append_sub_str(temp_key_str, len);
    }
    delete[] temp_key_str;
    delete lame;
    lame = 0;
    return ret;
}

/*
 *  Function Name:  	AddInt
 *  Input Params:   	const char* prop_name, const INT32 val
 *  Return Value:   	UINT32
 *  Description:
 *  	function to add a property which has an integer value, to
 *  the log database. this will add all the USER DEFINED properties.
 */

UINT32
CommonRegistry::AddInt(const char* prop_name, const INT32 val)
{
    DPRINTF(D_REGISTRY, ("CommonRegistry::AddInt(%s, %ld)\n", prop_name, val));
    HX_RESULT theErr = HXR_OK;
    DB_node* d = 0;
    Property* p = 0;
    Key* k = new Key(prop_name);
    if(!k)
    {
        return 0;
    }
    int len = k->size();
    char* curr_key_str = new char[len];
    if(!curr_key_str)
    {
        HX_DELETE(k);
        return 0;
    }
    DB_implem* ldb = _logdb_imp;
    DB_node* new_d = NULL;
    BOOL read_only = FALSE;

    *curr_key_str = '\0';
    while(!k->last_sub_str())
    {
        k->append_sub_str(curr_key_str, len);
	if (p && p->get_type() == PT_COMPOSITE)
	    p->get_db_val(&ldb);
	if (!ldb)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO Properties under it!\n",
	                         prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
	d = ldb->find(curr_key_str);
	if (!d)
	{
	    int ret = _buildSubstructure4Prop(curr_key_str,
		prop_name);

	    if (ret)
	    {
		d = ldb->find(curr_key_str);
	    }
	    if (!ret || !d)
	    {
		theErr = HXR_FAILED;
		goto cleanup;
	    }
	}
	p = d->get_data();
        if (!p)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO DATA\n",
	                         prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
	read_only = p->is_read_only();
	if (read_only)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s is READ ONLY\n",
	                         prop_name, curr_key_str));
	    theErr = HXR_FAILED;
	    goto cleanup;
	}
    }
    if (p && p->get_type() == PT_COMPOSITE)
	p->get_db_val(&ldb);
    k->append_sub_str(curr_key_str, len);
    if (ldb->find(curr_key_str))
    {
	DPRINTF(D_REGISTRY, ("%s -- is ALREADY PRESENT!\n", k->get_key_str()));
	theErr = HXR_FAILED;
	goto cleanup;
    }

    // everything is alright add the new property
    new_d = _addInt(k, curr_key_str, val, ldb);

    AddDone(ldb, new_d, d, p);

cleanup:

    HX_VECTOR_DELETE(curr_key_str);

    if (HXR_OK != theErr)
    {
	if (k)
	{
	    delete k;
	    k = NULL;
	}
	return 0;
    }
    else
    {
	return new_d->get_id();
    }
}

/*
 *  Function Name:  	GetInt
 *  Input Params:   	const char* prop_name, INT32* value
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	retrieve the INTEGER property if it exists.
 */
HX_RESULT
CommonRegistry::GetInt(const char* prop_name, INT32* value) const
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return HXR_FAIL;

    if (p)
    {
	switch(p->get_type())
	{
	    case PT_INTEGER:
		return p->get_int_val(value);
		break;

	    case PT_INTREF:
		return p->get_int_ref_val(value);
		break;

	    default:
		DPRINTF(D_REGISTRY, ("%s -- Property<-->Type MISMATCH\n",
		                     prop_name));
		return HXR_PROP_TYPE_MISMATCH;
	}
    }
    return HXR_FAIL;
}

/*
 *  Function Name:  	GetInt
 *  Input Params:   	const UINT32 hash_key, INT32* value
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	retrieve the INTEGER property using the HashTree.
 */
HX_RESULT
CommonRegistry::GetInt(const UINT32 hash_key, INT32* value) const
{
    DB_node*  d = 0;
    Property* p = 0;

    d = (DB_node *)_ids->get(hash_key);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("GetInt(%lu) failed\n", hash_key));
	return HXR_FAIL;
    }
    p = d->get_data();
    if (p)
    {
	switch(p->get_type())
	{
	    case PT_INTEGER:
		return p->get_int_val(value);
		break;

	    case PT_INTREF:
		return p->get_int_ref_val(value);
		break;

	    default:
		DPRINTF(D_REGISTRY, ("%lu -- Property<-->Type MISMATCH\n",
		                     hash_key));
		return HXR_PROP_TYPE_MISMATCH;
	}
    }
    return HXR_FAIL;
}

/*
 *  Function Name:  	SetInt
 *  Input Params:   	const char* prop_name, const INT32 value
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	sets the value of an integer property.
 */
HX_RESULT
CommonRegistry::SetInt(const char* prop_name, const INT32 value)
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return HXR_FAIL;

    if (!p)
        return HXR_FAIL;

    if (p->is_read_only())
    {
        DPRINTF(D_REGISTRY, ("%s -- Property is READ ONLY\n",
	                     prop_name));
	return HXR_FAIL;
    }

    switch(p->get_type())
    {
        case PT_INTEGER:
            p->int_val(value);
            break;

        case PT_INTREF:
            DPRINTF(D_REGISTRY, ("cannot set INTREF value using SetInt\n"));
            return HXR_FAIL;

        default:
            DPRINTF(D_REGISTRY, ("%s -- Property<-->Type MISMATCH\n",
	                         prop_name));
            return HXR_PROP_TYPE_MISMATCH;
    }
    // dispatch the callbacks and then return HXR_OK
    return SetDone(d, p);
}

/*
 *  Function Name:  	SetInt
 *  Input Params:   	const UINT32 hash_key, const INT32 value
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	set a new value of the INTEGER property using the HashTree.
 */
HX_RESULT
CommonRegistry::SetInt(const UINT32 hash_key, const INT32 value)
{
    DPRINTF(D_REGISTRY, ("CommonRegistry::SetInt(%lu, %ld)\n", hash_key,
                         value));
    DB_node*  d = 0;
    Property* p = 0;

    d = (DB_node *)_ids->get(hash_key);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("SetInt(%lu) failed\n", hash_key));
	return HXR_FAIL;
    }
    p = d->get_data();
    if (!p)
        return HXR_FAIL;

    if (p->is_read_only())
    {
        DPRINTF(D_REGISTRY, ("%s(%lu) -- Property is READ ONLY\n",
	                     p->get_key_str(), hash_key));
	return HXR_FAIL;
    }

    switch(p->get_type())
    {
        case PT_INTEGER:
            p->int_val(value);
            break;

        case PT_INTREF:
            DPRINTF(D_REGISTRY, ("cannot set INTREF value using SetInt\n"));
            return HXR_FAIL;

        default:
            DPRINTF(D_REGISTRY, ("%s(%lu) -- Property<-->Type MISMATCH\n",
	                         p->get_key_str(), hash_key));
            return HXR_PROP_TYPE_MISMATCH;
    }
    // dispatch the callbacks and then return HXR_OK
    return SetDone(d, p);
}

/*
 *  Function Name:  	CommonRegistry::AddStr
 *  Input Params:   	const char* prop_name, const char* const value,
 *  Return Value:   	UINT32
 *  Description:
 *  	adds a STRING Property ot the registry.
 */
UINT32
CommonRegistry::AddStr(const char* prop_name, IHXBuffer* buf)
{
    DPRINTF(D_REGISTRY, ("CommonRegistry::AddStr(%s, buf(%p)\n",
                         prop_name, buf));
    DB_node* d = 0;
    Property* p = 0;
    Key* k = new Key(prop_name);
    if(!k)
    {
        return 0;
    }
    int len = k->size();
    char* curr_key_str = new char[len];
    if(!curr_key_str)
    {
        HX_DELETE(k);
        return 0;
    }
    DB_implem* ldb = _logdb_imp;
    BOOL read_only = FALSE;

    *curr_key_str = '\0';
    while(!k->last_sub_str())
    {
        k->append_sub_str(curr_key_str, len);
	if (p && p->get_type() == PT_COMPOSITE)
	    p->get_db_val(&ldb);
	if (!ldb)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO Properties under it!\n",
	            prop_name, curr_key_str));
	    delete k;
	    HX_VECTOR_DELETE(curr_key_str);
	    return 0;
	}
	d = ldb->find(curr_key_str);
	if (!d)
	{
	    int ret = _buildSubstructure4Prop(curr_key_str,
		prop_name);
	    if (!ret)
	    {
		delete k;
		delete[] curr_key_str;
		return 0;
	    }
	    d = ldb->find(curr_key_str);
	    if (!d)
	    {
		delete k;
		delete[] curr_key_str;
		return 0;
	    }
	}
	p = d->get_data();
        if (!p)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO DATA\n",
	                         prop_name, curr_key_str));
	    delete k;
	    HX_VECTOR_DELETE(curr_key_str);
	    return 0;
	}
	read_only = p->is_read_only();
	if (read_only)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s is READ ONLY\n",
	                         prop_name, curr_key_str));