xmlchar.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 801 行 · 第 1/5 页

/*
 * Copyright 2002,2004 The Apache Software Foundation.
 * 
 * Licensed 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
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id: XMLChar.cpp,v 1.9 2004/09/08 13:56:24 peiyongz Exp $
 */

// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/util/XMLChar.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/internal/CharTypeTables.hpp>
#include <string.h>

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  XMLChar1_0: static data initialization
// ---------------------------------------------------------------------------
bool XMLChar1_0::enableNEL = false;

// ---------------------------------------------------------------------------
//  XMLChar1_0: Public, static methods
// ---------------------------------------------------------------------------
//  Checks whether all of the chars in the passed buffer are whitespace or
//  not. Breaks out on the first non-whitespace.
//
bool XMLChar1_0::isAllSpaces(const   XMLCh* const    toCheck
                            , const unsigned int    count)
{
    const XMLCh* curCh = toCheck;
    const XMLCh* endPtr = toCheck + count;
    while (curCh < endPtr)
    {
        if (!(fgCharCharsTable1_0[*curCh++] & gWhitespaceCharMask))
            return false;
    }
    return true;
}


//
//  Checks whether at least one of the chars in the passed buffer are whitespace or
//  not.
//
bool XMLChar1_0::containsWhiteSpace(const   XMLCh* const    toCheck
                            , const unsigned int    count)
{
    const XMLCh* curCh = toCheck;
    const XMLCh* endPtr = toCheck + count;
    while (curCh < endPtr)
    {
        if (fgCharCharsTable1_0[*curCh++] & gWhitespaceCharMask)
            return true;
    }
    return false;
}

bool XMLChar1_0::isValidNCName(const   XMLCh* const    toCheck
                            , const unsigned int    count)
{
    const XMLCh* curCh = toCheck;
    const XMLCh* endPtr = toCheck + count;
    if (*curCh== chColon || !(fgCharCharsTable1_0[*curCh++] & gFirstNameCharMask))
        return false;

    while (curCh < endPtr)
    {
        if (*curCh== chColon || !(fgCharCharsTable1_0[*curCh++] & gNameCharMask))
            return false;
    }
    return true;
}

bool XMLChar1_0::isValidNmtoken(const   XMLCh*       const    toCheck
                              , const   unsigned int          count)
{
    const XMLCh* curCh = toCheck;
    const XMLCh* endPtr = toCheck + count;

    while (curCh < endPtr)
    {
        if (!(fgCharCharsTable1_0[*curCh++] & gNameCharMask))
            return false;
    }
    return true;
}

bool XMLChar1_0::isValidName(const   XMLCh* const    toCheck
                            , const unsigned int    count)
{
    const XMLCh* curCh = toCheck;
    const XMLCh* endPtr = toCheck + count;
    if (!(fgCharCharsTable1_0[*curCh++] & gFirstNameCharMask))
        return false;

    while (curCh < endPtr)
    {
        if (!(fgCharCharsTable1_0[*curCh++] & gNameCharMask))
            return false;
    }
    return true;
}

/**
  * isValidQName
  *
  * [6]  QName ::=  (Prefix ':')? LocalPart
  * [7]  Prefix ::=  NCName
  * [8]  LocalPart ::=  NCName
  *
  */
bool XMLChar1_0::isValidQName(const   XMLCh* const    toCheck
                            , const unsigned int    count)
{
    int length = count;
    int colonPos = XMLString::indexOf(toCheck, chColon);
    if ((colonPos == 0) ||         // ":abcd"
        (colonPos == length-1))    // "abcd:"
        return false;

    //
    // prefix
    //
    if (colonPos != -1)
    {
        if (isValidNCName(toCheck, colonPos) == false)
            return false;
    }

    //
    // LocalPart
    //
    return isValidNCName(toCheck+colonPos+1, length-colonPos-1);
}

//
//  This one is not called terribly often, so its done manually in order
//  give up more bits in the character characteristics table for more often
//  used characteristics.
//
bool XMLChar1_0::isPublicIdChar(const XMLCh toCheck, const XMLCh toCheck2)
{
    if (!toCheck2) {
        const XMLCh* curTable = gPublicIdChars;

        // Check the ranges