parseurl.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: parseurl.cpp,v 1.1.26.1 2004/07/09 01:54:47 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 ***** */

// From include
#include <ctype.h>
#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxcom.h"
#include "hxresult.h"
#include "ihxpckts.h"
#include "hxcomm.h"

// From hxcont
#include "hxstring.h"
#include "chxpckts.h"

// From hxmisc
#include "hxurl.h"
#include "unkimp.h"
#include "baseobj.h"
#include "hxparse.h"

// From pxcomlib
#include "gstring.h"
#include "pxutil.h"
#include "pxcolor.h"
#include "pxrect.h"
#include "pxeffect.h"
#include "buffutil.h"
#include "parseurl.h"

#ifdef _MACINTOSH
#include <ctype.h>  // For toupper on the Macintosh.
#include <stdlib.h> // for atol
#endif

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

HX_RESULT ParseURLEncoding(IHXCommonClassFactory *pFactory, const char *pszURL, IHXValues **ppValues)
{
    // Check for input errors
    if (!pFactory || !pszURL)
    {
        return HXR_FAIL;
    }

    // Create an IHXValues object
    IHXValues *pValues = NULL;
    HX_RESULT retVal    = pFactory->CreateInstance(CLSID_IHXValues, (void **) &pValues);
    if (retVal != HXR_OK)
    {
        return retVal;
    }
    *ppValues = pValues;

    // Get a string class with the URL in it
    GString cURL = pszURL;

    // Get the length
    INT32 lURLLen = strlen(pszURL);

    // Look for the beginning of the parameter string
    INT32 lPos = cURL.find('?');
    if (lPos < 0)
    {
        return HXR_OK;
    }

    // Now we go into a loop looking for attribute/value pairs
    for(;;)
    {
        // Set the beginning of the attribute
        INT32 lAttributeLeftPos = lPos + 1;

        // Look for the end of the attribute
        lPos = cURL.find('=', lPos);
        if (lPos < 0)
        {
            break;
        }

        // Set the inclusive end of the attribute
        INT32 lAttributeRightPos = lPos - 1;
        INT32 lValueLeftPos      = lPos + 1;
        INT32 lValueRightPos;

	// Make sure we don't have a situation like "foo.jpg?bitrate="
	if (lValueLeftPos >= lURLLen)
	{
	    break;
	}

        // Now look for the separator
        lPos = cURL.find('&', lPos);
        if (lPos < 0)
        {
            // We didn't find the separator, so we assume the end of
            // the string is the end of the value
            lValueRightPos = cURL.length() - 1;
            lPos           = lValueRightPos;
        }
        else
        {
            lValueRightPos = lPos - 1;
        }

        // Check to see if we have valid strings for our attribute and value
        if (lAttributeRightPos >= lAttributeLeftPos &&
            lValueRightPos     >= lValueLeftPos)
        {
            GString cAttribute = cURL.substr(lAttributeLeftPos, lAttributeRightPos);
            GString cValue     = cURL.substr(lValueLeftPos,     lValueRightPos);

            // Create an IHXBuffer
            IHXBuffer *pBuffer = NULL;
            retVal              = pFactory->CreateInstance(CLSID_IHXBuffer, (void **) &pBuffer);
            if (retVal != HXR_OK)
            {
                HX_RELEASE(pValues);
                *ppValues = NULL;
                return retVal;
            }

            // Set value string into the buffer
            retVal = pBuffer->Set((const BYTE *) cValue.c_str(), cValue.length() + 1);
            if (retVal != HXR_OK)
            {
                HX_RELEASE(pBuffer);
                HX_RELEASE(pValues);
                *ppValues = NULL;
                return retVal;
            }

            // Set the attribute/value pair
            retVal = pValues->SetPropertyCString(cAttribute.c_str(), pBuffer);
            if (retVal != HXR_OK)
            {
                HX_RELEASE(pBuffer);
                HX_RELEASE(pValues);
                *ppValues = NULL;
                return retVal;
            }

            // Release our reference on the buffer
            HX_RELEASE(pBuffer);
        }
    }

    return HXR_OK;
}

HX_RESULT ExtractValueTime(IHXValues *pValues, const char *pszAttr, UINT32 ulDefault, UINT32 &rulValue)
{
    IHXBuffer *pStringBuf = NULL;
    HX_RESULT retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        // No attribute was specified, so take the default
        rulValue = ulDefault;
        return HXR_OK;
    }

    // An attribute was specified so use it
    char   *pszStr   = (char *) pStringBuf->GetBuffer();
    UINT32  ulStrLen = strlen(pszStr);
    BOOL bRet        = ConvertTimeStringToULONG32(pszStr, ulStrLen, rulValue);
    if (bRet == FALSE)
    {
        HX_RELEASE(pStringBuf);
        return HXR_FAIL;
    }
    HX_RELEASE(pStringBuf);

    return HXR_OK;
}

HX_RESULT ExtractValueUINT32(IHXValues *pValues, const char *pszAttr, UINT32 ulDefault, UINT32 &rulValue)
{
    IHXBuffer *pStringBuf = NULL;
    HX_RESULT retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        // No attribute was specified, so take the default
        rulValue = ulDefault;
        return HXR_OK;
    }

    // An attribute was specified so use it
    rulValue = (UINT32) atol((char *) pStringBuf->GetBuffer());

    // Release the buffer
    HX_RELEASE(pStringBuf);

    return HXR_OK;
}

HX_RESULT ExtractValueBOOL(IHXValues *pValues, const char *pszAttr, BOOL bDefault, BOOL &rbValue)
{
    IHXBuffer *pStringBuf = NULL;
    HX_RESULT   retVal     = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        // No attribute was specified, so take the default
        rbValue = bDefault;
        return HXR_OK;
    }

    // An attribute was specified so use it
    char *pVal = (char *) pStringBuf->GetBuffer();
    if (!strcmp(pVal, "true"))
    {
        rbValue = TRUE;
    }
    else if (!strcmp(pVal, "false"))
    {
        rbValue = FALSE;
    }
    else
    {
        rbValue = bDefault;
        HX_RELEASE(pStringBuf);
        return HXR_FAIL;
    }

    // Release the buffer
    HX_RELEASE(pStringBuf);

    return HXR_OK;
}

HX_RESULT ExtractValueString(IHXValues *pValues, const char *pszAttr, const char *pszDefault, CHXString &rcValue)
{
    IHXBuffer* pStringBuf = NULL;
    HX_RESULT retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        // No attribute was specified, so take the default
        if (pszDefault)
        {
            rcValue = pszDefault;
        }

        return HXR_OK;
    }

    // An attribute was specified so use it
    rcValue = (const char*) pStringBuf->GetBuffer();

    // Release the value buffer
    HX_RELEASE(pStringBuf);

    return HXR_OK;
}

HX_RESULT ExtractValueString(IHXValues *pValues, const char *pszAttr, const char *pszDefault, GString &rcValue)
{
    IHXBuffer *pStringBuf = NULL;
    HX_RESULT retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        // No attribute was specified, so take the default
        if (pszDefault)
        {
            rcValue = pszDefault;
        }
        else
        {
            rcValue = "";
        }

        return HXR_OK;
    }

    // An attribute was specified so use it
    rcValue.CopyN(pStringBuf->GetBuffer(), pStringBuf->GetSize());

    // Release the value buffer
    HX_RELEASE(pStringBuf);

    return HXR_OK;
}

HX_RESULT ExtractValueColor(IHXValues *pValues, const char *pszAttr, const char *pszDefault, PXColor &rcValue)
{
    IHXBuffer *pStringBuf = NULL;
    HX_RESULT   retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    GString     cColor;
    if (retVal != HXR_OK)
    {
        cColor = pszDefault;
    }
    else
    {
        // An attribute was specified so use it
        cColor.CopyN(pStringBuf->GetBuffer(), pStringBuf->GetSize());
        // Release the value buffer
        HX_RELEASE(pStringBuf);
    }

    // Now convert the color
    retVal = rcValue.InitFromString(cColor.c_str());
    if (retVal != HXR_OK)
    {
        return retVal;
    }

    return HXR_OK;
}

HX_RESULT ExtractValueColor(IHXValues *pValues, const char *pszAttr, UINT32 ulDefault, UINT32& rulValue)
{
    IHXBuffer* pStringBuf = NULL;
    HX_RESULT   retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        rulValue = ulDefault;
    }
    else
    {
        UINT32 ulTmp = ulDefault;
        retVal = HXParseColorUINT32((const char*) pStringBuf->GetBuffer(),
                                    ulTmp);
        if (SUCCEEDED(retVal))
        {
            rulValue = ulTmp;
        }
        else
        {
            rulValue = ulDefault;
        }
        // Release the value buffer
        HX_RELEASE(pStringBuf);
    }

    return HXR_OK;
}

HX_RESULT ExtractValueOpacity(IHXValues *pValues, const char *pszAttr, UINT32 ulDefault, UINT32& rulValue)
{
    IHXBuffer *pStringBuf = NULL;
    HX_RESULT retVal = pValues->GetPropertyCString(pszAttr, pStringBuf);
    if (retVal != HXR_OK)
    {
        // No attribute was specified, so take the default
        rulValue = ulDefault;
        return HXR_OK;
    }

    // An attribute was specified so use it
    INT32  lOpacity  = 0;
    char*  pEndPtr   = NULL;
    double dVal      = strtod((const char*) pStringBuf->GetBuffer(), &pEndPtr);
    if (pEndPtr && *pEndPtr == '%')
    {
        // Value is a percent
        lOpacity = (INT32) ((dVal * 255.0 / 100.0) + 0.5);
    }
    else
    {
        lOpacity = (INT32) (dVal + 0.5);
    }
    // Range check
    if (lOpacity < 0)
    {
        lOpacity = 0;
    }
    if (lOpacity > 255)
    {
        lOpacity = 255;
    }
    // Assign the out parameter
    rulValue = (UINT32) lOpacity;

    // Release the buffer
    HX_RELEASE(pStringBuf);

    return HXR_OK;
}

BOOL ConvertTimeStringToULONG32(char *pTimeBuf, ULONG32 timeBufLen, ULONG32 &timeValInMillisec)
{
    char   *pTimeBuffer            = pTimeBuf;
    ULONG32 timeBufferLen          = timeBufLen;
    char    savedEndChar           = '\0';   //for restoring '\"' char at end, if found.
    LONG32  bufIndx                = 0L;
    BOOL    bDotEncounteredAlready = FALSE;
    LONG32  indexOfDot             = -1;
    BOOL    endCharWasChanged      = FALSE;
    ULONG32 days_;
    ULONG32 hours_;
    ULONG32 minutes_;
    ULONG32 seconds_;
    ULONG32 milliseconds_;

    // Initialize
    days_ = hours_ = minutes_ = seconds_ = milliseconds_ = 0L;
    timeValInMillisec=0;

    // Check for input error
    if(!pTimeBuffer  ||  timeBufLen < MIN_TIMEBUFFERLENGTH)
    {