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Diffstat (limited to 'src/xmlpatterns/data/qbase64binary.cpp')
| -rw-r--r-- | src/xmlpatterns/data/qbase64binary.cpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/xmlpatterns/data/qbase64binary.cpp b/src/xmlpatterns/data/qbase64binary.cpp new file mode 100644 index 0000000000..0f805c04fe --- /dev/null +++ b/src/xmlpatterns/data/qbase64binary.cpp @@ -0,0 +1,216 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtXmlPatterns module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QByteArray> +#include <QtGlobal> + +#include "qbuiltintypes_p.h" +#include "qvalidationerror_p.h" + +#include "qbase64binary_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +Base64Binary::Base64Binary(const QByteArray &val) : m_value(val) +{ +} + +const char Base64Binary::Base64DecMap[128] = +{ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x3F, + 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, + 0x3C, 0x3D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, + 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, + 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, + 0x17, 0x18, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, + 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, + 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, + 0x31, 0x32, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +void Base64Binary::base64Decode(const QByteArray &in, QByteArray &out, bool &ok) +{ + out.resize(0); + + if(in.isEmpty()) + { + ok = false; + return; + } + + ok = true; + int len = in.size(), tail = len; + const char *const data = in.data(); + unsigned int eqCount = 0; + + // Find the tail end of the actual encoded data even if + // there is/are trailing CR and/or LF. + while(data[tail - 1] == '=') + { + --tail; + if(data[tail] != '=') + len = tail; + else + ++eqCount; + } + + if(eqCount > 2) + { + ok = false; + return; + } + + unsigned int outIdx = 0; + const int count = len; // We modify len below + out.resize((count)); + + for(int idx = 0; idx < count; ++idx) + { + const unsigned char ch = data[idx]; + if((ch > 47 && ch < 58) || + (ch > 64 && ch < 91) || + (ch > 96 && ch < 123) || + ch == '+' || + ch == '/') + { + out[outIdx++] = Base64DecMap[ch]; + } + else if(ch == '=') + { + if((idx + 1) == count || data[idx + 1] == '=') + { + out[++outIdx] = Base64DecMap[ch]; + continue; + } + + ok = false; + return; + } + else if(ch == ' ') + { + /* One space is ok, and the previously applied whitespace facet(not implemented + * at this time of writing) have ensured it's only one space, so we assume that. */ + --tail; + --len; + continue; + } + else + { + ok = false; + return; + } + } + + if(outIdx % 4 != 0) + { + ok = false; + return; + } + + out.resize(len); + + // 4-byte to 3-byte conversion + len = (tail > (len / 4)) ? tail - (len / 4) : 0; + int sidx = 0, didx = 0; + if(len > 1) + { + while(didx < len - 2) + { + out[didx] =(((out[sidx] << 2) & 255) | ((out[sidx + 1] >> 4) & 003)); + out[didx + 1] =(((out[sidx + 1] << 4) & 255) | ((out[sidx + 2] >> 2) & 017)); + out[didx + 2] =(((out[sidx + 2] << 6) & 255) | (out[sidx + 3] & 077)); + sidx += 4; + didx += 3; + } + } + + if(didx < len) + out[didx] =(((out[sidx] << 2) & 255) | ((out[sidx + 1] >> 4) & 003)); + + if(++didx < len) + out[didx] =(((out[sidx + 1] << 4) & 255) | ((out[sidx + 2] >> 2) & 017)); + + // Resize the output buffer + if(len == 0 || len < out.size()) + out.resize(len); +} + +AtomicValue::Ptr Base64Binary::fromLexical(const QString &str) +{ + const QString simple(str.simplified()); + if(simple.isEmpty()) + return AtomicValue::Ptr(new Base64Binary(QByteArray())); + + bool ok = false; + QByteArray result; + base64Decode(simple.toUtf8(), result, ok); + + if(ok) + return AtomicValue::Ptr(new Base64Binary(result)); + else + return ValidationError::createError(); +} + +Base64Binary::Ptr Base64Binary::fromValue(const QByteArray &data) +{ + return Base64Binary::Ptr(new Base64Binary(data)); +} + +QString Base64Binary::stringValue() const +{ + return QString::fromLatin1(m_value.toBase64().constData()); +} + +ItemType::Ptr Base64Binary::type() const +{ + return BuiltinTypes::xsBase64Binary; +} + +QT_END_NAMESPACE |