/usr/include/scribus/scguardedptr.h is in scribus-dev 1.4.6+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | /*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#ifndef SCGUARDEDPTR_H
#define SCGUARDEDPTR_H
#include "scribusapi.h"
#include "assert.h"
/*
A replacement for QPointer
Does not rely on QObject, and provides faster destructor
*/
template<typename T>
class ScGuardedPtrData
{
public:
int refs;
T* pointer;
ScGuardedPtrData(void) { pointer = NULL; refs = 0; }
ScGuardedPtrData(T* ptr) { pointer = ptr; refs = 0; }
};
template<typename T>
class ScGuardedPtr
{
protected:
ScGuardedPtrData<T> *data;
public:
ScGuardedPtr(void);
ScGuardedPtr(T* ptr);
ScGuardedPtr(const ScGuardedPtr& gPtr);
~ScGuardedPtr();
ScGuardedPtr& operator=(const ScGuardedPtr& gPtr);
bool operator==( const ScGuardedPtr<T> &p ) const { return (T*)(*this) == (T*) p;}
bool operator!= ( const ScGuardedPtr<T>& p ) const { return !( *this == p ); }
T* operator->() const { return (T*)(data ? data->pointer : 0); }
T& operator*() const { return *((T*)(data ? data->pointer : 0)); }
operator T*() const { return (T*)(data ? data->pointer : 0); }
void deref(void);
};
template<typename T>
class ScGuardedObject : public ScGuardedPtr<T>
{
public:
ScGuardedObject(T* ptr);
ScGuardedObject(const ScGuardedObject& gPtr);
~ScGuardedObject();
ScGuardedObject& operator=(const ScGuardedObject& gPtr);
bool operator==( const ScGuardedObject<T> &p ) const { return (T*)(*this) == (T*) p;}
bool operator!= ( const ScGuardedObject<T>& p ) const { return !( *this == p ); }
void nullify(void);
};
template<typename T>
ScGuardedPtr<T>::ScGuardedPtr(void)
{
data = new ScGuardedPtrData<T>();
++(data->refs);
};
template<typename T>
ScGuardedPtr<T>::ScGuardedPtr(T* ptr)
{
data = new ScGuardedPtrData<T>(ptr);
++(data->refs);
};
template<typename T>
ScGuardedPtr<T>::ScGuardedPtr(const ScGuardedPtr& other)
{
data = other.data;
++(data->refs);
};
template<typename T>
ScGuardedPtr<T>::~ScGuardedPtr()
{
deref();
};
template<typename T>
ScGuardedPtr<T>& ScGuardedPtr<T>::operator=(const ScGuardedPtr& other)
{
// We do not copy the owner member
if (data != other.data)
{
++(other.data->refs);
deref();
data = other.data;
}
return *this;
};
template<typename T>
void ScGuardedPtr<T>::deref(void)
{
if (data && --(data->refs) == 0)
{
delete data;
data = NULL;
}
};
template<typename T>
ScGuardedObject<T>::ScGuardedObject(T* ptr) : ScGuardedPtr<T>(ptr)
{
};
template<typename T>
ScGuardedObject<T>::ScGuardedObject(const ScGuardedObject& other)
{
this->data=NULL;
// Must never be used
assert(false);
};
template<typename T>
ScGuardedObject<T>& ScGuardedObject<T>::operator=(const ScGuardedObject& other)
{
// We do nothing, think about an object being assigned to another
// The object being assigned must keep track of its own data
return *this;
};
template<typename T>
void ScGuardedObject<T>::nullify(void)
{
if (this->data)
this->data->pointer = NULL;
};
template<typename T>
ScGuardedObject<T>::~ScGuardedObject()
{
nullify();
// deref() is called by ScGuardedPtr<T> dtor
};
#endif
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