summaryrefslogtreecommitdiffstats
path: root/src/tools/quuid.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/tools/quuid.cpp')
-rw-r--r--src/tools/quuid.cpp421
1 files changed, 421 insertions, 0 deletions
diff --git a/src/tools/quuid.cpp b/src/tools/quuid.cpp
new file mode 100644
index 000000000..a486a6c9d
--- /dev/null
+++ b/src/tools/quuid.cpp
@@ -0,0 +1,421 @@
+/****************************************************************************
+**
+** Implementation of TQUuid class
+**
+** Copyright (C) 2000-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the tools module of the TQt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free TQt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing retquirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
+** included in the packaging of this file. Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "quuid.h"
+
+#include "qdatastream.h"
+
+/*!
+ \class TQUuid quuid.h
+ \brief The TQUuid class defines a Universally Unique Identifier (UUID).
+
+ \reentrant
+
+ For objects or declarations that must be uniquely identified,
+ UUIDs (also known as GUIDs) are widely used in order to assign a
+ fixed and easy to compare value to the object or declaration. The
+ 128-bit value of a UUID is generated by an algorithm that
+ guarantees that the value is unique.
+
+ In TQt, UUIDs are wrapped by the TQUuid struct which provides
+ convenience functions for handling UUIDs. Most platforms provide a
+ tool to generate new UUIDs, for example, uuidgen and guidgen.
+
+ UUIDs generated by TQUuid, are based on the \c Random version of the
+ \c DCE (Distributed Computing Environment) standard.
+
+ UUIDs can be constructed from numeric values or from strings, or
+ using the static createUuid() function. They can be converted to a
+ string with toString(). UUIDs have a variant() and a version(),
+ and null UUIDs return TRUE from isNull().
+*/
+
+/*!
+ \fn TQUuid::TQUuid()
+
+ Creates the null UUID {00000000-0000-0000-0000-000000000000}.
+*/
+
+/*!
+ \fn TQUuid::TQUuid( uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8 )
+
+ Creates a UUID with the value specified by the parameters, \a l,
+ \a w1, \a w2, \a b1, \a b2, \a b3, \a b4, \a b5, \a b6, \a b7, \a
+ b8.
+
+ Example:
+ \code
+ // {67C8770B-44F1-410A-AB9A-F9B5446F13EE}
+ TQUuid IID_MyInterface( 0x67c8770b, 0x44f1, 0x410a, 0xab, 0x9a, 0xf9, 0xb5, 0x44, 0x6f, 0x13, 0xee )
+ \endcode
+*/
+
+/*!
+ \fn TQUuid::TQUuid( const TQUuid &orig )
+
+ Creates a copy of the TQUuid \a orig.
+*/
+#ifndef QT_NO_QUUID_STRING
+/*!
+ Creates a TQUuid object from the string \a text. The function can
+ only convert a string in the format
+ {HHHHHHHH-HHHH-HHHH-HHHH-HHHHHHHHHHHH} (where 'H' stands for a hex
+ digit). If the conversion fails a null UUID is created.
+*/
+TQUuid::TQUuid( const TQString &text )
+{
+ bool ok;
+ if ( text.isEmpty() ) {
+ *this = TQUuid();
+ return;
+ }
+ TQString temp = text.upper();
+ if ( temp[0] != '{' )
+ temp = "{" + text;
+ if ( text[(int)text.length()-1] != '}' )
+ temp += "}";
+
+ data1 = temp.mid( 1, 8 ).toULong( &ok, 16 );
+ if ( !ok ) {
+ *this = TQUuid();
+ return;
+ }
+
+ data2 = temp.mid( 10, 4 ).toUInt( &ok, 16 );
+ if ( !ok ) {
+ *this = TQUuid();
+ return;
+ }
+ data3 = temp.mid( 15, 4 ).toUInt( &ok, 16 );
+ if ( !ok ) {
+ *this = TQUuid();
+ return;
+ }
+ data4[0] = temp.mid( 20, 2 ).toUInt( &ok, 16 );
+ if ( !ok ) {
+ *this = TQUuid();
+ return;
+ }
+ data4[1] = temp.mid( 22, 2 ).toUInt( &ok, 16 );
+ if ( !ok ) {
+ *this = TQUuid();
+ return;
+ }
+ for ( int i = 2; i<8; i++ ) {
+ data4[i] = temp.mid( 25 + (i-2)*2, 2 ).toUShort( &ok, 16 );
+ if ( !ok ) {
+ *this = TQUuid();
+ return;
+ }
+ }
+}
+
+/*!
+ \internal
+*/
+TQUuid::TQUuid( const char *text )
+{
+ *this = TQUuid( TQString(text) );
+}
+#endif
+/*!
+ \fn TQUuid TQUuid::operator=(const TQUuid &uuid )
+
+ Assigns the value of \a uuid to this TQUuid object.
+*/
+
+/*!
+ \fn bool TQUuid::operator==(const TQUuid &other) const
+
+ Returns TRUE if this TQUuid and the \a other TQUuid are identical;
+ otherwise returns FALSE.
+*/
+
+/*!
+ \fn bool TQUuid::operator!=(const TQUuid &other) const
+
+ Returns TRUE if this TQUuid and the \a other TQUuid are different;
+ otherwise returns FALSE.
+*/
+#ifndef QT_NO_QUUID_STRING
+/*!
+ \fn TQUuid::operator TQString() const
+
+ Returns the string representation of the uuid.
+
+ \sa toString()
+*/
+
+/*!
+ TQString TQUuid::toString() const
+
+ Returns the string representation of the uuid.
+*/
+TQString TQUuid::toString() const
+{
+ TQString result;
+
+ result = "{" + TQString::number( data1, 16 ).rightJustify( 8, '0' ) + "-";
+ result += TQString::number( (int)data2, 16 ).rightJustify( 4, '0' ) + "-";
+ result += TQString::number( (int)data3, 16 ).rightJustify( 4, '0' ) + "-";
+ result += TQString::number( (int)data4[0], 16 ).rightJustify( 2, '0' );
+ result += TQString::number( (int)data4[1], 16 ).rightJustify( 2, '0' ) + "-";
+ for ( int i = 2; i < 8; i++ )
+ result += TQString::number( (int)data4[i], 16 ).rightJustify( 2, '0' );
+
+ return result + "}";
+}
+#endif
+
+#ifndef QT_NO_DATASTREAM
+/*!
+ \relates TQUuid
+ Writes the uuid \a id to the datastream \a s.
+*/
+TQDataStream &operator<<( TQDataStream &s, const TQUuid &id )
+{
+ s << (Q_UINT32)id.data1;
+ s << (Q_UINT16)id.data2;
+ s << (Q_UINT16)id.data3;
+ for (int i = 0; i < 8; i++ )
+ s << (Q_UINT8)id.data4[i];
+ return s;
+}
+
+/*!
+ \relates TQUuid
+ Reads uuid from from the stream \a s into \a id.
+*/
+TQDataStream &operator>>( TQDataStream &s, TQUuid &id )
+{
+ Q_UINT32 u32;
+ Q_UINT16 u16;
+ Q_UINT8 u8;
+ s >> u32;
+ id.data1 = u32;
+ s >> u16;
+ id.data2 = u16;
+ s >> u16;
+ id.data3 = u16;
+ for (int i = 0; i < 8; i++ ) {
+ s >> u8;
+ id.data4[i] = u8;
+ }
+ return s;
+}
+#endif
+
+/*!
+ Returns TRUE if this is the null UUID
+ {00000000-0000-0000-0000-000000000000}; otherwise returns FALSE.
+*/
+bool TQUuid::isNull() const
+{
+ return data4[0] == 0 && data4[1] == 0 && data4[2] == 0 && data4[3] == 0 &&
+ data4[4] == 0 && data4[5] == 0 && data4[6] == 0 && data4[7] == 0 &&
+ data1 == 0 && data2 == 0 && data3 == 0;
+}
+
+/*!
+ \enum TQUuid::Variant
+
+ This enum defines the variant of the UUID, which is the scheme
+ which defines the layout of the 128-bits value.
+
+ \value VarUnknown Variant is unknown
+ \value NCS Reserved for NCS (Network Computing System) backward compatibility
+ \value DCE Distributed Computing Environment, the scheme used by TQUuid
+ \value Microsoft Reserved for Microsoft backward compatibility (GUID)
+ \value Reserved Reserved for future definition
+*/
+
+/*!
+ \enum TQUuid::Version
+
+ This enum defines the version of the UUID.
+
+ \value VerUnknown Version is unknown
+ \value Time Time-based, by using timestamp, clock sequence, and
+ MAC network card address (if available) for the node sections
+ \value EmbeddedPOSIX DCE Security version, with embedded POSIX UUIDs
+ \value Name Name-based, by using values from a name for all sections
+ \value Random Random-based, by using random numbers for all sections
+*/
+
+/*!
+ \fn TQUuid::Variant TQUuid::variant() const
+
+ Returns the variant of the UUID.
+ The null UUID is considered to be of an unknown variant.
+
+ \sa version()
+*/
+TQUuid::Variant TQUuid::variant() const
+{
+ if ( isNull() )
+ return VarUnknown;
+ // Check the 3 MSB of data4[0]
+ if ( (data4[0] & 0x80) == 0x00 ) return NCS;
+ else if ( (data4[0] & 0xC0) == 0x80 ) return DCE;
+ else if ( (data4[0] & 0xE0) == 0xC0 ) return Microsoft;
+ else if ( (data4[0] & 0xE0) == 0xE0 ) return Reserved;
+ return VarUnknown;
+}
+
+/*!
+ \fn TQUuid::Version TQUuid::version() const
+
+ Returns the version of the UUID, if the UUID is of the DCE
+ variant; otherwise returns VerUnknown.
+
+ \sa variant()
+*/
+TQUuid::Version TQUuid::version() const
+{
+ // Check the 4 MSB of data3
+ Version ver = (Version)(data3>>12);
+ if ( isNull()
+ || (variant() != DCE)
+ || ver < Time
+ || ver > Random )
+ return VerUnknown;
+ return ver;
+}
+
+/*!
+ \fn bool TQUuid::operator<(const TQUuid &other) const
+
+ Returns TRUE if this TQUuid is of the same variant,
+ and lexicographically before the \a other TQUuid;
+ otherwise returns FALSE.
+
+ \sa variant()
+*/
+#define ISLESS(f1, f2) if (f1!=f2) return (f1<f2);
+bool TQUuid::operator<(const TQUuid &other ) const
+{
+ if ( variant() != other.variant() )
+ return FALSE;
+
+ ISLESS( data1, other.data1 );
+ ISLESS( data2, other.data2 );
+ ISLESS( data3, other.data3 );
+ for ( int n = 0; n < 8; n++ ) {
+ ISLESS( data4[n], other.data4[n] );
+ }
+ return FALSE;
+}
+
+/*!
+ \fn bool TQUuid::operator>(const TQUuid &other) const
+
+ Returns TRUE if this TQUuid is of the same variant,
+ and lexicographically after the \a other TQUuid;
+ otherwise returns FALSE.
+
+ \sa variant()
+*/
+#define ISMORE(f1, f2) if (f1!=f2) return (f1>f2);
+bool TQUuid::operator>(const TQUuid &other ) const
+{
+ if ( variant() != other.variant() )
+ return FALSE;
+
+ ISMORE( data1, other.data1 );
+ ISMORE( data2, other.data2 );
+ ISMORE( data3, other.data3 );
+ for ( int n = 0; n < 8; n++ ) {
+ ISMORE( data4[n], other.data4[n] );
+ }
+ return FALSE;
+}
+
+/*!
+ \fn TQUuid TQUuid::createUuid()
+
+ Returns a new UUID of \c DCE variant, and \c Random type. The
+ UUIDs generated are based on the platform specific pseudo-random
+ generator, which is usually not a cryptographic-quality random
+ number generator. Therefore, a UUID is not guaranteed to be unique
+ cross application instances.
+
+ On Windows, the new UUID is extremely likely to be unique on the
+ same or any other system, networked or not.
+
+ \sa variant(), version()
+*/
+#if defined(Q_OS_WIN32)
+#include <objbase.h> // For CoCreateGuid
+TQUuid TQUuid::createUuid()
+{
+ GUID guid;
+ CoCreateGuid( &guid );
+ TQUuid result = guid;
+ return result;
+}
+#else // !Q_OS_WIN32
+#include "qdatetime.h"
+#include "stdlib.h" // For srand/rand
+TQUuid TQUuid::createUuid()
+{
+ static const int intbits = sizeof(int)*8;
+ static int randbits = 0;
+ if ( !randbits ) {
+ int max = RAND_MAX;
+ do { ++randbits; } while ( (max=max>>1) );
+ srand( (uint)TQDateTime::currentDateTime().toTime_t() );
+ rand(); // Skip first
+ }
+
+ TQUuid result;
+ uint *data = &(result.data1);
+ int chunks = 16 / sizeof(uint);
+ while ( chunks-- ) {
+ uint randNumber = 0;
+ for ( int filled = 0; filled < intbits; filled += randbits )
+ randNumber |= rand()<<filled;
+ *(data+chunks) = randNumber;
+ }
+
+ result.data4[0] = (result.data4[0] & 0x3F) | 0x80; // UV_DCE
+ result.data3 = (result.data3 & 0x0FFF) | 0x4000; // UV_Random
+
+ return result;
+}
+#endif // !Q_OS_WIN32
+