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o3de/Code/Editor/Util/StringNoCasePredicate.h

63 lines
1.8 KiB
C++

/*
* Copyright (c) Contributors to the Open 3D Engine Project.
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
*
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
*/
// Description : Utility class to help in STL algorithms on containers with
// CStrings when intending to use case insensitive searches or sorting for
// example.
#ifndef CRYINCLUDE_EDITOR_UTIL_STRINGNOCASEPREDICATE_H
#define CRYINCLUDE_EDITOR_UTIL_STRINGNOCASEPREDICATE_H
#pragma once
/*
Utility class to help in STL algorithms on containers with CStrings
when intending to use case insensitive searches or sorting for example.
e.g.
std::vector< CString > v;
...
std::sort( v.begin(), v.end(), CStringNoCasePredicate::LessThan() );
std::find_if( v.begin(), v.end(), CStringNoCasePredicate::Equal( stringImLookingFor ) );
*/
class CStringNoCasePredicate
{
public:
//////////////////////////////////////////////////////////////////////////
struct Equal
{
Equal(const QString& referenceString)
: m_referenceString(referenceString)
{
}
bool operator() (const QString& arg) const
{
return (m_referenceString.compare(arg, Qt::CaseInsensitive) == 0);
}
private:
const QString& m_referenceString;
};
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
struct LessThan
{
bool operator() (const QString& arg1, const QString& arg2) const
{
return (arg1.CompareNoCase(arg2) < 0);
}
};
//////////////////////////////////////////////////////////////////////////
};
#endif // CRYINCLUDE_EDITOR_UTIL_STRINGNOCASEPREDICATE_H