RmlUi/Source/Core/String.cpp

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#include "precompiled.h"
#include "../../Include/RmlUi/Core/String.h"
#include "../../Include/RmlUi/Core/StringBase.h"

namespace Rml {
namespace Core {

int RMLUICORE_API RmlUiStringFormatString(StringBase<char>& string, int max_size, const char* format, va_list argument_list)
{
	const int INTERNAL_BUFFER_SIZE = 1024;
	static char buffer[INTERNAL_BUFFER_SIZE];
	char* buffer_ptr = buffer;

	if (max_size + 1 > INTERNAL_BUFFER_SIZE)
		buffer_ptr = new char[max_size + 1];

	int length = vsnprintf(buffer_ptr, max_size, format, argument_list);
	buffer_ptr[length >= 0 ? length : max_size] = '\0';
	#ifdef RMLUI_DEBUG
		if (length == -1)
		{
			Log::Message(Log::LT_WARNING, "String::sprintf: String truncated to %d bytes when processing %s", max_size, format);
		}
	#endif

	string = buffer_ptr;

	if (buffer_ptr != buffer)
		delete[] buffer_ptr;

	return length;
}

template <>
StringBase<char>::StringBase(StringBase<char>::size_type max_size, const char* fmt, ...) : value(local_buffer), buffer_size(LOCAL_BUFFER_SIZE), length(0), hash(0) 
{
	va_list argument_list;
	va_start(argument_list, fmt);

	RmlUiStringFormatString(*this, (int)max_size, fmt, argument_list);

	va_end(argument_list);
}

template <>
int StringBase<char>::FormatString(StringBase<char>::size_type max_size, const char* fmt, ...)
{
	va_list argument_list;
	va_start(argument_list, fmt);

	int length = RmlUiStringFormatString(*this, (int)max_size, fmt, argument_list);

	va_end(argument_list);

	return length;
}

String operator+(const char* cstring, const String& string)
{
	return String(cstring) + string;
}

//#define ENABLE_STRING_TESTS
#ifdef ENABLE_STRING_TESTS
#include <string>
#include "RmlUi/Core/SystemInterface.h"
RMLUICORE_API void StringTests()
{
	SystemInterface* sys = Rml::Core::GetSystemInterface();
	
	std::string ss = "test";
	String es = "test";

	es = "hello";
	es.Resize(100);
	es.Erase(4);
	es.Erase(2,100);
	es += "y";

	String sub1 = es.Replace("lo", "l");
	sub1 = sub1.Replace("h", "!");
	RMLUI_ASSERT(sub1 == "!el");

	Time start;

	{
		// Create a few free buffers
		String tempstring("buffer");
		String tempstring1("buffer1");
		String tempstring2("buffer2");
	}	

	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		std::string str("test");	
	}
	printf( "SS Assign Short: %f\n", sys->GetElapsedTime() - start);
	
	start = sys->GetElapsedTime();	
	for (int i = 0; i < 100000; i++)
	{
		String str("test");
	}
	printf( "ES Assign Short: %f\n", sys->GetElapsedTime() - start);

	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		std::string str("test this really long string that won't fit in a local buffer");	
	}
	printf( "SS Assign Long: %f\n", sys->GetElapsedTime() - start);
	
	start = sys->GetElapsedTime();	
	for (int i = 0; i < 100000; i++)
	{
		String str("test this really long string that won't fit in a local buffer");
	}
	printf( "ES Assign Long: %f\n", sys->GetElapsedTime() - start);

	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		if (ss == "hello")
		{
			int bob = 10;
		}
	}
	printf( "SS Compare: %f (char*)\n", sys->GetElapsedTime() - start);

	ss = "bo1";
	std::string oss = ss;
	std::string nss = "bob";
	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		//if (ss == oss)
		{
			int bob = 10;
		}
		if (ss == nss)
		{
			int bob = 10;
		}
	}
	printf( "SS Compare: %f (std::string)\n", sys->GetElapsedTime() - start);

	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		if (es == "hello")
		{
			int bob = 10;
		}
	}
	printf( "ES Compare: %f (char*)\n", sys->GetElapsedTime() - start);
	
	es = "bo1";
	String oes = es;
	String nes = "bob";
	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		//if (es == oes)
		{
			int bob = 10;
		}
		
		if (nes == oes)
		{
			int bob = 10;
		}
	}
	printf( "ES Compare: %f (String)\n", sys->GetElapsedTime() - start);

	start = sys->GetElapsedTime();
	std::string ss_concat = "hello";
	for (int i = 0; i < 100000; i++)
	{
		ss_concat += "y";
	}
	printf( "SS +=: %f\n", sys->GetElapsedTime() - start);

	String es_concat = "hello";
	start = sys->GetElapsedTime();
	for (int i = 0; i < 100000; i++)
	{
		if (i == 42)
		{
			int bob = 10;
		}
		es_concat += "y";
	}
	printf( "ES +=: %f\n", sys->GetElapsedTime() - start);

	const char* x1 = "bob";
	String s;
	String t;
	String u;
	s = "hello";
	t = "hell";
	u = "hello";
	if (s == t)
	{
		int bob = 10;
	}
	if (s == u)
	{
		int bob = 10;
	}

	t = s + u;
	if (t == "hellohello")
	{
		int bob = 10;
	}
	if (t == "x")
	{
		int bob = 10;
	}

	t += u;


	size_t x = s.Find("e");
	size_t y = s.Find("z");
	
	String sub = t.Replace("lo", "l");
	sub = sub.Replace("h", "!");

	sub.FormatString(128, "%s", "hello");
	int bob = 10;
}
#endif

}
}

/*namespace std {

RMLUICORE_API size_t hash< String >::operator()(const String& string) const
{
	return StringUtilities::FNVHash(string.CString());
}

}*/