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/*****************************************************************************
* *
* PrimeSense PSCommon Library *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of PSCommon. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
#ifndef _XN_STRING_H_
#define _XN_STRING_H_
#include <XnPlatform.h>
#include "XnMemory.h"
namespace xnl
{
class String
{
typedef XnChar* Iterator;
typedef const XnChar* ConstIterator;
typedef XnChar& Reference;
typedef const XnChar& ConstReference;
public:
String() :
m_str(NULL),
m_capacity(0)
{}
String(const XnChar* str) :
m_str(NULL), m_capacity(0)
{
Initialize(str, (XnUInt32)(strlen(str)+1));
}
String(const XnChar* str, XnUInt32 size) :
m_str(NULL), m_capacity(0)
{
Initialize(str, size);
}
String(const String& other) : m_str(NULL), m_capacity(0)
{
*this = other;
}
~String()
{
Destroy();
}
String& operator=(const String& other)
{
Destroy();
Initialize(other.m_str, other.m_capacity);
return *this;
}
bool operator==(const String& other) const
{
if (Size() != other.Size())
return false;
for (XnUInt32 i = 0; i < Size(); ++i)
{
if (m_str[i] != other[i])
{
return false;
}
}
return true;
}
bool operator!=(const String& other) const
{
return !operator==(other);
}
const XnChar* Data() const {return m_str;}
String operator+(const String& other);
String& operator+=(const String& other);
XnUInt32 Size() const {return (XnUInt32)(strlen(m_str));}
XnUInt32 Capacity() const {return m_capacity;}
Iterator Begin() {return m_str;}
ConstIterator Begin() const {return m_str;}
Iterator End() {return m_str+m_capacity;}
ConstIterator End() const {return m_str+m_capacity;}
Reference operator[](int i)
{
Resize(i+1);
return m_str[i];
}
ConstReference operator[](int i) const
{
return m_str[i];
}
void Resize(int newSize)
{
if (m_capacity >= (XnUInt32)newSize)
{
return;
}
XnChar* newData = XN_NEW_ARR(XnChar, newSize);
if (m_str != NULL)
{
strncpy(newData, m_str, m_capacity);
XN_DELETE_ARR(m_str);
}
m_str = newData;
m_capacity = newSize;
}
ConstIterator Find(XnChar c, XnUInt16 which = 1) const
{
XnUInt16 found = 0;
for (ConstIterator iter = Begin(); iter != End(); ++iter)
{
if (*iter == c)
{
++found;
if (found == which)
return iter;
}
}
return End();
}
private:
void Initialize(const XnChar* str, XnUInt32 maxCapacity)
{
Resize(maxCapacity);
strncpy(m_str, str, maxCapacity);
}
void Destroy()
{
if (m_str != NULL)
{
XN_DELETE_ARR(m_str);
m_str = NULL;
}
m_capacity = 0;
}
XnChar* m_str;
XnUInt32 m_capacity;
};
} // xnl
#endif // _XN_STRING_H_
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