looseprs.cpp

linux下的一款播放器

			tag = NULL;
			return XMLPBadAttribute;
		}
	    }
	    else
	    {
		tag->new_attribute()->name = 0;
	    }

	    if(bUseNonQuotedValues)
	    {
		if(bHasDirectives)
		{
		    res = GetString(cur, close,
				    tag->m_cur_attribute->value,
				    AttributeValueDirective);
		}
		else
		{
		    res = GetString(cur, close,
				    tag->m_cur_attribute->value,
				    AttributeValueNoQuote);
		}
	    }
	    else
	    {
		res = GetString(cur, close,
				tag->m_cur_attribute->value,
				AttributeValue);
	    }
	    if(res == GSMissingQuote)
	    {
		delete tag;
		tag = NULL;
		return XMLPAttributeValueNotQuoted;
	    }
	    else if(res != GSFoundExpected)
	    {
		delete tag;
		tag = NULL;
		return XMLPBadAttribute;
	    }
	}
    }

    if(m_bStrictCompliance)
    {
	// error on duplicate attributes
	CHXMapStringToOb dupMap;
	BOOL bDupFound = FALSE;
	XMLAttribute* pAttr = NULL;
	for(UINT32 i=0;i<tag->m_numAttributes;++i)
	{
	    pAttr = tag->attribute(i);

	    void* pLookupValue = NULL;
	    if(pAttr->name)
	    {
		if(dupMap.Lookup(pAttr->name, pLookupValue))
		{
		    bDupFound = TRUE;
		    break;
		}
		else
		{
		    dupMap.SetAt(pAttr->name, NULL);
		}
	    }
	}
	if(bDupFound)
	{
#if defined(XXXEH_CHECK_THIS_IN_AFTER_U2_RELEASE)
	    return XMLPDupAttribute;
#else /* XXXEH- Back out BAB's fix for PR 9172 because it breaks a lot of
       * old content (this rebreaks PR 9172 and fixes PR 12447)
       */
	    HX_ASSERT(1); //line exists only for setting a breakpoint.
#endif
	}
    }

    return XMLPTag;
}



XMLParseResult
XMLParser::ScanTag(const char* open, const char* close, XMLTag* tag)
{
    const char* cur = open+1;
    const char* afterclose = close+1;
    char cQuote = '"';

    CHXXMLEncode xmlStr(m_pEncoding, (BYTE*)cur, close - cur);
    UINT16 uLen = 0;
    const char* ptr = (const char*)xmlStr.GetNextChar(uLen);

    //tag->m_need_close
    //tag->m_type;


    // check the spacing....
    switch (tag->m_type)
    {
    case XMLEndTag:
	{
	    // scan name...
	    if (!xmlStr.IsNameValid((const BYTE*)tag->m_name, strlen(tag->m_name)))
	    {
		XMLError* err = NULL;
		SetError(err, XMLErrorInvalidName, m_ulTagStartLine, m_ulTagStartCol, 
			    tag->m_name, strlen(tag->m_name), 0);
		tag->m_errs->Add(err);
	    }
	}
	break;
    case XMLPlainTag:
    case XMLProcInstTag:
	{
	    // scan tag
	    if (!xmlStr.IsNameValid((const BYTE*)tag->m_name, strlen(tag->m_name)))
	    {
		XMLError* err = NULL;
		SetError(err, XMLErrorInvalidName, m_ulTagStartLine, m_ulTagStartCol, 
			    tag->m_name, strlen(tag->m_name), 0);
		tag->m_errs->Add(err);
	    }

	    // check PI name
	    //if (!xmlStr.IsPINameValid(tag->m_name, strlen(tag->m_name)))
	    //{
	//	XMLError* err = NULL;
	//	SetError(err, XMLErrorInvalidPITarget, m_ulTagStartLine, m_ulTagStartCol, 
	//		    tag->m_name, strlen(tag->m_name), 0);
	//	tag->m_errs->Add(err);
	  //  }

	    // check the spacing.
	    enum { InTagName, InTag, InBeginAttributeName, InAttributeName, 
		InEndAttributeName, InBeginAttributeValue, InAttributeValue, Done } state;
	    state = InTagName;
	    
	    for (const char* pos = cur; *pos && pos < close && state != Done;
		pos = (const char*)xmlStr.GetNextChar(uLen))
	    {
		switch (state)
		{
		case InTagName:
		    {
			// go to first white space
			if ( isspace(*pos) )
			{
			    state = InBeginAttributeName;
			}
			else if ( *pos == '>' )
			{
			    // done
			    state = Done;
			}
		    }
		    break;
		case InTag:
		    {
			if ( *pos == '>' || (*pos == '/' && 
			    *(pos+1) == '>'))
			{
			    // done.
			    state = Done;
			}
			else
			{
			    // grab the first char... keep it and switch states.
			    // it should be a space... 
			    state = InBeginAttributeName;
			    if (!isspace(*pos))
			    {
				XMLError* err = NULL;
				SetError(err, XMLErrorMissingReqSpace, m_ulTagStartLine, m_ulTagStartCol, 
					    tag->m_name, strlen(tag->m_name), 0);
				tag->m_errs->Add(err);
			    }
			}
		    }
		    break;
		case InBeginAttributeName:
		    {
			if ( isspace(*pos) )
			{
			    // continue...
			}
			else if ( *pos == '=' )
			{
			    XMLError* err = NULL;
			    SetError(err, XMLErrorMissingEquals, m_ulTagStartLine, m_ulTagStartCol, 
					tag->m_name, strlen(tag->m_name), 0);
			    tag->m_errs->Add(err);
			    state = InBeginAttributeValue;
			}
			else if ( *pos == '>' || (*pos == '/' 
			    && *(pos+1) == '>'))
			{
			    // done
			    state = Done;
			}
			else
			{
			    state = InAttributeName;
			}
		    }
		    break;
		case InAttributeName:
		    {
			if ( isspace(*pos) )
			{
			    state = InEndAttributeName;
			}
			else if ( *pos == '=' )
			{
			    state = InBeginAttributeValue;
			}
			else if ( *pos == '>' )
			{
			    XMLError* err = NULL;
			    SetError(err, XMLErrorMissingEquals, m_ulTagStartLine, m_ulTagStartCol, 
					tag->m_name, strlen(tag->m_name), 0);
			    
			    tag->m_errs->Add(err);
			    // done
			    state = Done;
			}
			else if (*pos == '\'' || *pos == '"')
			{
			    XMLError* err = NULL;
			    SetError(err, XMLErrorBadAttribute, m_ulTagStartLine, m_ulTagStartCol, 
					tag->m_name, strlen(tag->m_name), 0);
			    tag->m_errs->Add(err);

			    cQuote = *pos;
			    state = InAttributeValue;
			}
		    }
		    break;
		case InEndAttributeName:
		    {
			if ( isspace(*pos) )
			{
			    // continue..
			}
			else if ( *pos == '=' )
			{
			    state = InBeginAttributeValue;
			}
			else if ( *pos == '>' )
			{
			    XMLError* err = NULL;
			    SetError(err, XMLErrorMissingEquals, m_ulTagStartLine, m_ulTagStartCol, 
					tag->m_name, strlen(tag->m_name), 0);
			    tag->m_errs->Add(err);
			    state = Done;
			}
			else
			{
			    // hmm. we got a non whitespace before the =

			    //First, let's see if we have a ["] or a [']
			    // (i.e., an attribute value start) in which
			    // case the author must have forgotten to
			    // put an '=' between the name/value pair.
			    // In this case, we need to keep the renderers
			    // from firing off an error with old bad content,
			    // so we pretend we're in the "InAttributeValue"
			    // state:
			    if ( *pos == '\'' )
			    {
				XMLError* err = NULL;
				SetError(err, XMLErrorBadAttribute, m_ulTagStartLine, m_ulTagStartCol, 
					    tag->m_name, strlen(tag->m_name), 0);
				tag->m_errs->Add(err);
				cQuote = *pos;
				state = InAttributeValue;
			    }
			    else if ( *pos == '\"' )
			    {
				XMLError* err = NULL;
				SetError(err, XMLErrorBadAttribute, m_ulTagStartLine, m_ulTagStartCol, 
					    tag->m_name, strlen(tag->m_name), 0);
				tag->m_errs->Add(err);
				cQuote = *pos;
				state = InAttributeValue;
			    }
			    else
			    {
				XMLError* err = NULL;
				SetError(err, XMLErrorBadAttribute, m_ulTagStartLine, m_ulTagStartCol, 
						tag->m_name, strlen(tag->m_name), 0);
				tag->m_errs->Add(err);
				// lets go back to the attribute name state.
				state = InAttributeName;
			    }
			}
		    }
		    break;
		case InBeginAttributeValue:
		    {
			if ( isspace(*pos) )
			{
			}
			else if ( *pos == '\'' || *pos == '\"')
			{
			    cQuote = *pos;
			    state = InAttributeValue;
			}
			else if ( *pos == '>' )
			{
			    XMLError* err = NULL;
			    SetError(err, XMLErrorMissingEquals, m_ulTagStartLine, m_ulTagStartCol, 
					tag->m_name, strlen(tag->m_name), 0);
			    tag->m_errs->Add(err);
			    // done
			    state = Done;
			}
		    }
		    break;
		case InAttributeValue:
		    {
			if ( *pos == cQuote )
			{
			    state = InTag;
			}
		    }
		    break;
		}
	    }

	}
	break;
    case XMLCommentTag:
	{
	    // we will not scan...
	}
	break;
    case XMLDirectiveTag:
	{
	    // TODO: scan Directive.
	}
	break;
    }

    // error on duplicate attributes
    // also validate the names and attributes.
    CHXMapStringToOb dupMap;
    BOOL bDupFound = FALSE;
    XMLAttribute* pAttr = NULL;
    const char* name = NULL;
    for(UINT32 i=0;i<tag->m_numAttributes;++i)
    {
	pAttr = tag->attribute(i);

	if (!xmlStr.IsNameValid((const BYTE*)pAttr->name, strlen(pAttr->name)))
	{
	    XMLError* err = NULL;
	    SetError(err, XMLErrorInvalidName, m_ulTagStartLine, m_ulTagStartCol, 
		    pAttr->name, strlen(pAttr->name), 0);
	    tag->m_errs->Add(err);
	}
	if (!xmlStr.IsAttValueValid((const BYTE*)pAttr->value, strlen(pAttr->value)))
	{
	    XMLError* err = NULL;
	    SetError(err, XMLErrorInvalidCharInDoc, m_ulTagStartLine, m_ulTagStartCol, 
		    pAttr->value, strlen(pAttr->value), 0);
	    tag->m_errs->Add(err);
	}


	void* pLookupValue = NULL;
	if(pAttr->name)
	{
	    if(dupMap.Lookup(pAttr->name, pLookupValue))
	    {
		name = pAttr->name;
		bDupFound = TRUE;
		break;
	    }
	    else
	    {
		dupMap.SetAt(pAttr->name, NULL);
	    }
	}
    }

    if	(bDupFound)
    {	
	XMLError* err = NULL;
	SetError(err, XMLErrorDupAttribute, m_ulTagStartLine, m_ulTagStartCol, 
		name, strlen(name), 0);
	tag->m_errs->Add(err);
    }

    return XMLPTag;
}
    
void XMLParser::SetEncoding(const char* pszEncoding)
{
    if (pszEncoding)
    {
        INT32 lLen = strlen(pszEncoding);
        if (lLen > 0)
        {
            HX_VECTOR_DELETE(m_pEncoding);
            m_pEncoding = new char [lLen + 1];
            if (m_pEncoding)
            {
                strcpy(m_pEncoding, pszEncoding);
            }
        }
    }
}

HX_RESULT XMLParser::GetEncoding(REF(char*) rpszEncoding)
{
    HX_RESULT retVal = HXR_FAIL;

    if (m_pEncoding)
    {
        HX_VECTOR_DELETE(rpszEncoding);
        rpszEncoding = new char [strlen(m_pEncoding) + 1];
        if (rpszEncoding)
        {
            strcpy(rpszEncoding, m_pEncoding);
            retVal = HXR_OK;
        }
    }

    return retVal;
}

void
XMLParser::SetError(REF(XMLError*) pErr, XMLErrorTag tag, INT32 lLine,
    INT32 lPos, const char* pErrorText, INT32 lErrorTextLen,
    const char* pFrameText)
{
    HX_DELETE(m_pLastError);

    INT32 lTextLen = 
	(lErrorTextLen > MAX_ERROR_LEN) ? MAX_ERROR_LEN: lErrorTextLen;
    char tmpBuf[MAX_ERROR_LEN * 2]; // overdo it a bit...

    // convert control characters to spaces
    INT32 j = 0;
    for(INT32 i = 0; i < lTextLen; ++i)
    {
	if(iscntrl(pErrorText[i]))
	{
	    tmpBuf[j++] = ' ';
	}
	else
	{
	    tmpBuf[j++] = pErrorText[i];
	}
    }
    tmpBuf[j] = 0;

    pErr = new XMLError(tag, lLine, lPos, tmpBuf, pFrameText);
}

XMLTag::XMLTag(BOOL bStrictCompliance, BOOL bStoreErrors):
    m_bStrictCompliance(bStrictCompliance)
{
    m_numAttributes = 0;
    m_name = NULL;
    m_type = XMLPlainTag;
    m_need_close = TRUE;
    m_errs = NULL;

    if (bStoreErrors)
    {
	m_errs = new CHXPtrArray();
    }
}

XMLTag::~XMLTag()
{
    UINT32 i;
    for(i = 0; i < m_numAttributes; i++)
    {
	delete (XMLAttribute*)m_attributes[(int)i];
    }

    HX_VECTOR_DELETE(m_name);

    if (m_errs)
    {
	UINT32 size = m_errs->GetSize();
	for(i = 0; i < size; i++)
	{
	    delete (XMLError*)(*m_errs)[(int)i];
	}
	HX_DELETE(m_errs);
    }
}

XMLAttribute*
XMLTag::new_attribute()
{
    m_cur_attribute = new XMLAttribute;
    
    m_attributes.SetAtGrow((int)m_numAttributes, m_cur_attribute);
    m_numAttributes++;

    return m_cur_attribute;
}

const char*
XMLTag::get_attribute(const char* name)
{
    for(UINT32 i = 0; i < m_numAttributes; i++)
    {
	if(((XMLAttribute*)m_attributes[(int)i])->name)
	{
	    if(m_bStrictCompliance)
	    {
		if(strcmp(((XMLAttribute*)m_attributes[(int)i])->name, name) == 0)
		{
		    return (const char*)((XMLAttribute*)m_attributes[(int)i])->value;
		}
	    }
	    else
	    {
		if(strcasecmp(((XMLAttribute*)m_attributes[(int)i])->name, name) == 0)
		{
		    return (const char*)((XMLAttribute*)m_attributes[(int)i])->value;
		}
	    }
	}
    }
    return NULL;
}


/*
 * XMLError methods
 */

XMLError::XMLError(XMLErrorTag errorTag,
		   INT32 lLineNumber,
		   INT32 lLinePosition,
		   const char* pErrorString,
		   const char* pFrameString):
    m_errorTag(errorTag),
    m_lLineNumber(lLineNumber),
    m_lLinePosition(lLinePosition),
    m_pErrorString(0),
    m_pFrameString(0)
{
    if(pErrorString)
    {
	m_pErrorString = new_string(pErrorString);
    }
    if(pFrameString)
    {
	m_pFrameString = new_string(pFrameString);
    }
}

XMLError::~XMLError()
{
    delete[] m_pErrorString;
    delete[] m_pFrameString;
}