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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QtGlobal>

    43 

    44 #include "qbase64binary_p.h"

    45 #include "qbuiltintypes_p.h"

    46 #include "qpatternistlocale_p.h"

    47 #include "qvalidationerror_p.h"

    48 

    49 #include "qhexbinary_p.h"

    50 

    51 QT_BEGIN_NAMESPACE

    52 

    53 using namespace QPatternist;

    54 

    55 HexBinary::HexBinary(const QByteArray &val) : Base64Binary(val)

    56 {

    57 }

    58 

    59 qint8 HexBinary::fromHex(const QChar &c)

    60 {

    61     if(c.unicode() > 'f')

    62         return -1;

    63 

    64     const char *const range = "0123456789ABCDEFabcdef";

    65 

    66     const char *const in = strchr(range, c.unicode());

    67 

    68     if(!in)

    69         return -1;

    70 

    71     /* Pointer arithmetic. */

    72     int digit = in - range;

    73 

    74     if(digit > 15)

    75         digit -= 6;

    76 

    77     return digit;

    78 }

    79 

    80 AtomicValue::Ptr HexBinary::fromLexical(const NamePool::Ptr &np, const QString &str)

    81 {

    82     const QString lexical(str.trimmed());

    83     const int len = lexical.length();

    84 

    85     if(len == 0)

    86         return AtomicValue::Ptr(new HexBinary(QByteArray()));

    87 

    88     if((len & 1) != 0)

    89     {

    90         /* Catch a common case. */

    91         return ValidationError::createError(QtXmlPatterns::tr(

    92                   "A value of type %1 must contain an even number of "

    93                   "digits. The value %2 does not.")

    94                   .arg(formatType(np, BuiltinTypes::xsHexBinary),

    95                        formatData(QString::number(len))));

    96     }

    97 

    98     QByteArray val;

    99     val.resize(len / 2);

   100 

   101     for(int i = 0; i < len / 2; ++i)

   102     {

   103         qint8 p1 = fromHex(lexical[i * 2]);

   104         qint8 p2 = fromHex(lexical[i * 2 + 1]);

   105 

   106         if(p1 == -1 || p2 == -1)

   107         {

   108             const QString hex(QString::fromLatin1("%1%2").arg(lexical[i * 2], lexical[i * 2 + 1]));

   109 

   110             return ValidationError::createError(QtXmlPatterns::tr(

   111                              "%1 is not valid as a value of type %2.")

   112                              .arg(formatData(hex),

   113                                   formatType(np, BuiltinTypes::xsHexBinary)));

   114         }

   115 

   116         val[i] = static_cast<char>(p1 * 16 + p2);

   117     }

   118     Q_ASSERT(!val.isEmpty());

   119 

   120     return AtomicValue::Ptr(new HexBinary(val));

   121 }

   122 

   123 HexBinary::Ptr HexBinary::fromValue(const QByteArray &data)

   124 {

   125     return HexBinary::Ptr(new HexBinary(data));

   126 }

   127 

   128 QString HexBinary::stringValue() const

   129 {

   130     static const char s_toHex[] = "0123456789ABCDEF";

   131     const int len = m_value.count();

   132     QString result;

   133     result.reserve(len * 2);

   134 

   135     for(int i = 0; i < len; ++i)

   136     {

   137         // This cast is significant.

   138         const unsigned char val = static_cast<unsigned char>(m_value.at(i));

   139         result += QLatin1Char(s_toHex[val >> 4]);

   140         result += QLatin1Char(s_toHex[val & 0x0F]);

   141     }

   142 

   143     return result;

   144 }

   145 

   146 ItemType::Ptr HexBinary::type() const

   147 {

   148     return BuiltinTypes::xsHexBinary;

   149 }

   150 

   151 QT_END_NAMESPACE