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authorar <ar>2004-06-06 19:43:58 (UTC)
committer ar <ar>2004-06-06 19:43:58 (UTC)
commita1ef1c3fe8700a16329358288299276fd16c8fa0 (patch) (side-by-side diff)
tree3db826a2b2df0fd407721aaefe03bfc61ffd35f0
parentd5f6057374caf1c81e02628f0fcca01394b1dc9d (diff)
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- solve problems with padded memory - dont use memcpy
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--library/quuid.cpp133
-rw-r--r--library/quuid.h147
2 files changed, 157 insertions, 123 deletions
diff --git a/library/quuid.cpp b/library/quuid.cpp
index 46fd816..36469a8 100644
--- a/library/quuid.cpp
+++ b/library/quuid.cpp
@@ -51,7 +51,9 @@
Creates a copy of the QUuid \a orig.
*/
+
#ifndef QT_NO_QUUID_STRING
+
/*!
Creates a QUuid object from the string \a text. Right now, the function
can only convert the format {12345678-1234-1234-1234-123456789ABC} and
@@ -63,40 +65,47 @@ QUuid::QUuid( const QString &text )
QString temp = text.upper();
data1 = temp.mid( 1, 8 ).toULong( &ok, 16 );
- if ( !ok ) {
- *this = QUuid();
- return;
+ if ( !ok )
+ {
+ *this = QUuid();
+ return;
}
data2 = temp.mid( 10, 4 ).toUInt( &ok, 16 );
- if ( !ok ) {
- *this = QUuid();
- return;
+ if ( !ok )
+ {
+ *this = QUuid();
+ return;
}
data3 = temp.mid( 15, 4 ).toUInt( &ok, 16 );
- if ( !ok ) {
- *this = QUuid();
- return;
+ if ( !ok )
+ {
+ *this = QUuid();
+ return;
}
data4[0] = temp.mid( 20, 2 ).toUInt( &ok, 16 );
- if ( !ok ) {
- *this = QUuid();
- return;
+ if ( !ok )
+ {
+ *this = QUuid();
+ return;
}
data4[1] = temp.mid( 22, 2 ).toUInt( &ok, 16 );
- if ( !ok ) {
- *this = QUuid();
- return;
+ if ( !ok )
+ {
+ *this = QUuid();
+ return;
}
- for ( int i = 2; i<8; i++ ) {
- data4[i] = temp.mid( 25 + (i-2)*2, 2 ).toUShort( &ok, 16 );
- if ( !ok ) {
- *this = QUuid();
- return;
- }
+ for ( int i = 2; i<8; i++ )
+ {
+ data4[i] = temp.mid( 25 + (i-2)*2, 2 ).toUShort( &ok, 16 );
+ if ( !ok )
+ {
+ *this = QUuid();
+ return;
+ }
}
}
-#endif
+
/*!
\fn QUuid QUuid::operator=(const QUuid &uuid )
@@ -114,7 +123,7 @@ QUuid::QUuid( const QString &text )
Returns TRUE if this QUuid and the \a other QUuid are different, otherwise returns FALSE.
*/
-#ifndef QT_NO_QUUID_STRING
+
/*!
QString QUuid::toString() const
@@ -130,17 +139,89 @@ QString QUuid::toString() const
result += QString::number( (int)data4[0], 16 ).rightJustify( 2, '0' );
result += QString::number( (int)data4[1], 16 ).rightJustify( 2, '0' ) + "-";
for ( int i = 2; i < 8; i++ )
- result += QString::number( (int)data4[i], 16 ).rightJustify( 2, '0' );
+ result += QString::number( (int)data4[i], 16 ).rightJustify( 2, '0' );
return result + "}";
}
#endif
+
/*!
Returns TRUE if this is the null UUID {00000000-0000-0000-0000-000000000000}, otherwise returns FALSE.
*/
bool QUuid::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;
+ data4[4] == 0 && data4[5] == 0 && data4[6] == 0 && data4[7] == 0 &&
+ data1 == 0 && data2 == 0 && data3 == 0;
+}
+
+
+/*!
+ \fn QUuid::Variant QUuid::variant() const
+
+ Returns the variant of the UUID.
+ The null UUID is considered to be of an unknown variant.
+
+ \sa version()
+*/
+QUuid::Variant QUuid::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 bool QUuid::operator<(const QUuid &other) const
+
+ Returns TRUE if this QUuid is of the same variant,
+ and lexicographically before the \a other QUuid;
+ otherwise returns FALSE.
+
+ \sa variant()
+*/
+#define ISLESS(f1, f2) if (f1!=f2) return (f1<f2);
+bool QUuid::operator<(const QUuid &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 QUuid::operator>(const QUuid &other) const
+
+ Returns TRUE if this QUuid is of the same variant,
+ and lexicographically after the \a other QUuid;
+ otherwise returns FALSE.
+
+ \sa variant()
+*/
+#define ISMORE(f1, f2) if (f1!=f2) return (f1>f2);
+bool QUuid::operator>(const QUuid &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;
}
diff --git a/library/quuid.h b/library/quuid.h
index 841a00f..1575711 100644
--- a/library/quuid.h
+++ b/library/quuid.h
@@ -25,49 +25,45 @@
#include <qstring.h>
#endif // QT_H
-#include <memory.h>
-
-#if defined(Q_OS_WIN32)
-#ifndef GUID_DEFINED
-#define GUID_DEFINED
-typedef struct _GUID
-{
- ulong Data1;
- ushort Data2;
- ushort Data3;
- uchar Data4[ 8 ];
-} GUID;
-#endif
-#endif
-
-#if defined( Q_WS_QWS ) && !defined( UUID_H_INCLUDED )
-typedef unsigned char uuid_t[16];
-#endif
-
struct Q_EXPORT QUuid
{
+ enum Variant {
+ VarUnknown =-1,
+ NCS = 0, // 0 - -
+ DCE = 2, // 1 0 -
+ Microsoft = 6, // 1 1 0
+ Reserved = 7 // 1 1 1
+ };
+
QUuid()
{
- memset( this, 0, sizeof(QUuid) );
+ memset( this, 0, sizeof(QUuid) );
}
QUuid( uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8 )
{
- data1 = l;
- data2 = w1;
- data3 = w2;
- data4[0] = b1;
- data4[1] = b2;
- data4[2] = b3;
- data4[3] = b4;
- data4[4] = b5;
- data4[5] = b6;
- data4[6] = b7;
- data4[7] = b8;
+ data1 = l;
+ data2 = w1;
+ data3 = w2;
+ data4[0] = b1;
+ data4[1] = b2;
+ data4[2] = b3;
+ data4[3] = b4;
+ data4[4] = b5;
+ data4[5] = b6;
+ data4[6] = b7;
+ data4[7] = b8;
}
QUuid( const QUuid &uuid )
{
- memcpy( this, &uuid, sizeof(QUuid) );
+ uint i;
+
+ data1 = uuid.data1;
+ data2 = uuid.data2;
+ data3 = uuid.data3;
+ for( i = 0; i < 8; i++ )
+ data4[ i ] = uuid.data4[ i ];
}
+
#ifndef QT_NO_QUUID_STRING
QUuid( const QString & );
QString toString() const;
@@ -76,84 +72,41 @@ struct Q_EXPORT QUuid
QUuid &operator=(const QUuid &orig )
{
- memcpy( this, &orig, sizeof(QUuid) );
- return *this;
- }
+ uint i;
- bool operator==(const QUuid &orig ) const
- {
- return !memcmp( this, &orig, sizeof(QUuid) );
- }
+ data1 = orig.data1;
+ data2 = orig.data2;
+ data3 = orig.data3;
+ for( i = 0; i < 8; i++ )
+ data4[ i ] = orig.data4[ i ];
- bool operator!=(const QUuid &orig ) const
- {
- return !( *this == orig );
+ return *this;
}
- inline bool operator<(const QUuid &orig) const
- {
- return ( memcmp(this, &orig, sizeof(QUuid)) < 0);
- }
-
- inline bool operator>(const QUuid &orig) const
- {
- return ( memcmp(this, &orig, sizeof(QUuid) ) > 0);
- }
-
-#if defined(Q_OS_WIN32)
- // On Windows we have a type GUID that is used by the platform API, so we
- // provide convenience operators to cast from and to this type.
- QUuid( const GUID &guid )
+ bool operator==(const QUuid &orig ) const
{
- memcpy( this, &guid, sizeof(GUID) );
- }
+ uint i;
+ if ( data1 != orig.data1 || data2 != orig.data2 ||
+ data3 != orig.data3 )
+ return FALSE;
- QUuid &operator=(const GUID &orig )
- {
- memcpy( this, &orig, sizeof(QUuid) );
- return *this;
- }
+ for( i = 0; i < 8; i++ )
+ if ( data4[i] != orig.data4[i] )
+ return FALSE;
- operator GUID() const
- {
- GUID guid = { data1, data2, data3, { data4[0], data4[1], data4[2], data4[3], data4[4], data4[5], data4[6], data4[7] } };
- return guid;
+ return TRUE;
}
- bool operator==( const GUID &guid ) const
+ bool operator!=(const QUuid &orig ) const
{
- return !memcmp( this, &guid, sizeof(QUuid) );
+ return !( *this == orig );
}
- bool operator!=( const GUID &guid ) const
- {
- return !( *this == guid );
- }
-
- inline bool operator<(const QUuid &orig) const
- {
- return ( memcmp(this, &orig, sizeof(QUuid) ) < 0);
- }
-
- inline bool operator>(const QUuid &orig) const
- {
- return ( memcmp(this, &orig, sizeof(QUuid) ) > 0);
- }
-
-#endif
-#if defined (Q_WS_QWS)
- QUuid( uuid_t uuid )
- {
- memcpy( this, uuid, sizeof(uuid_t) );
- }
+ bool operator<(const QUuid &other ) const;
+ bool operator>(const QUuid &other ) const;
+
+ QUuid::Variant variant() const;
- QUuid &operator=(const uuid_t &orig )
- {
- memcpy( this, &orig, sizeof(uuid_t) );
- return *this;
- }
-#endif
-
ulong data1;
ushort data2;
ushort data3;