eccstring.cpp

vc++实现的ecc加密算法

/* ==========================================================================

	Ecc - Erik's Code Collection
	Copyright (C) 2003 - Erik Dienske

	This file is part of Ecc.

	Ecc is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	Ecc is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with Ecc; if not, write to the Free Software Foundation, Inc.,
	59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

===========================================================================*/

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "EccString.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
//---------------------------------------------------------------------------
#include <StrUtils.hpp>	// AnsiReplaceStr
//---------------------------------------------------------------------------

//===========================================================================
namespace ecc {
//===========================================================================

//---------------------------------------------------------------------------
static int EccPrevMemoLinesBefore = 0;
//---------------------------------------------------------------------------

void MemoMessage(TMemo *memo, const String message,
		int lines_before, int lines_after)
{
	switch (lines_before)
	{
		case -2:
			if (EccPrevMemoLinesBefore != -2) memo->Lines->Append(message);
			else memo->Lines->Strings[memo->Lines->Count - 1] = message;
			break;
		case -1:
			memo->Lines->Strings[memo->Lines->Count - 1]
			= memo->Lines->Strings[memo->Lines->Count - 1] + message;
			break;
		default:
			for (lines_before; lines_before > 0; lines_before--) memo->Lines->Append("");
			memo->Lines->Append(message);
	}

	for (lines_after; lines_after > 0; lines_after--) memo->Lines->Append("");

	MemoCursorOnLastLine(memo);
	EccPrevMemoLinesBefore = lines_before;
}
//---------------------------------------------------------------------------

void MemoCursorOnLastLine(TMemo* memo)
{
	memo->SelStart = memo->Lines->Text.Length() - 1;
}
//===========================================================================

//---------------------------------------------------------------------------
static int EccPrevLBLinesBefore = 0;
//---------------------------------------------------------------------------

void LBMessage(TListBox *lbox, String message,
		int lines_before, int lines_after)
{
	// Tabs etc. don't display very well in ListBoxes:
	/* TODO : Replace  \t, \n and \r with spaces? */
/* 	message = AnsiReplaceStr(message, "\t", " ");
	message = AnsiReplaceStr(message, "\r", " ");
	message = AnsiReplaceStr(message, "\n", " "); */

	switch (lines_before)
	{
		case -2:
			if (EccPrevLBLinesBefore != -2) lbox->Items->Append(message);
			else lbox->Items->Strings[lbox->Count - 1] = message;
			break;
		case -1:
			lbox->Items->Strings[lbox->Count - 1]
			= lbox->Items->Strings[lbox->Count - 1] + message;
			break;
		default:
			for (lines_before; lines_before > 0; lines_before--) lbox->Items->Append("");
			lbox->Items->Append(message);
	}

	for (lines_after; lines_after > 0; lines_after--) lbox->Items->Append("");

	LBCursorOnLastLine(lbox);
	EccPrevLBLinesBefore = lines_before;
}
//---------------------------------------------------------------------------

void LBCursorOnLastLine(TListBox* lbox)
{
	lbox->ItemIndex = lbox->Items->Count - 1;
	lbox->ItemIndex = -1;	// Unselect
}
//===========================================================================

String StripNonNumbers(String str)
{
	for (int i=1; i<=str.Length(); i++)
	{
		if ((str[i] < '0') || (str[i] > '9')) str[i] = ' ';
	}
	return AnsiReplaceStr(str, " ", "");
}
//---------------------------------------------------------------------------

bool StrToBool(String bool_str)
{
	return (LowerCase(bool_str) == "true") ? true : false;
}
//---------------------------------------------------------------------------

String BoolToStr(bool boolie)
{
	return boolie ? "true" : "false";
}
//---------------------------------------------------------------------------

String StrToXmlQuotStr(String str)
{
	str = AnsiReplaceStr(str, "\"", "&quot;");
	str = AnsiReplaceStr(str, "'", "&apos;");
	return str;
}
//---------------------------------------------------------------------------

String StrToXmlUtf8Str(String str)
{
	str = AnsiReplaceStr(str, "&", "&amp;"); // Should be the first replacement! (because of the '&').
	str = AnsiReplaceStr(str, "\"", "&quot;");
	str = AnsiReplaceStr(str, "'", "&apos;");
	str = AnsiReplaceStr(str, "<", "&lt;");
	str = AnsiReplaceStr(str, ">", "&gt;");
	return AnsiToUtf8(str);
}
//---------------------------------------------------------------------------

String ReplaceStr(String str, String from_str, String to_str)
{
	return AnsiReplaceStr(str, from_str, to_str);
}
//---------------------------------------------------------------------------

//===========================================================================
} // namespace ecc;
//===========================================================================