highlights.cpp

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/************************************************************************************
	Copyright (c) 2000 Aaron O'Neil
	All rights reserved.

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		2) Redistributions in binary form must reproduce the above copyright notice, 
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				and/or other materials provided with the distribution.
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				program startup. Additional credits for program modification are acceptable
				but original copyright and credits must be visible at startup.
		4) You may charge a reasonable copying fee for any distribution of Mud Master. 
				You may charge any fee you choose for support of Mud Master. You may not 
				charge a fee for Mud Master itself.

  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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	THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

**************************************************************************************/

#include "StdAfx.h"
#include "Extern.h"
#include "Highlights.h"

CHighlights::CHighlights()
{
	m_ptrList.SetSize(DEFAULT_HIGHLIGHT_ARRAY_SIZE,DEFAULT_HIGHLIGHT_GROW_SIZE);
	m_nCount = 0;
	m_nGetIndex = 0;
}

CHighlights::~CHighlights()
{
	RemoveAll();
}

void CHighlights::RemoveAll()
{
	HIGHLIGHT *pHigh;
	for (int i=0;i<m_nCount;i++)
	{
		pHigh = (HIGHLIGHT *)m_ptrList.GetAt(i);
		delete pHigh;
	}
	m_ptrList.RemoveAll();
	m_nCount = 0;
	m_nGetIndex = 0;
}

int CHighlights::RemoveGroup(const char *pszGroup)
{
	HIGHLIGHT *pHigh;
	int nCount = 0;
	for (int i=m_nCount-1;i>-1;i--)
	{
		pHigh = (HIGHLIGHT *)m_ptrList.GetAt(i);
		if (pHigh->strGroup == pszGroup)
		{
			Remove(i);
			nCount++;
		}
	}
	return(nCount);
}

int CHighlights::Add(const char *pszMask, const char *pszColor, const char *pszGroup)
{
	int nLen = strlen(pszMask);
	if (!nLen)
		return(FALSE);

	// Parese the colors.
	WORD wAttr = F_LIGHTGREY | B_BLACK;
	int nColorLen = strlen(pszColor);
	char *pColor = new char[nColorLen+1];
	strcpy(pColor,pszColor);
	char *ptr = strtok(pColor,",");
	if (ptr == NULL)
		wAttr = TextToAttr(pszColor,wAttr);
	else
		while(ptr != NULL)
		{
			wAttr = TextToAttr(ptr,wAttr);
			ptr = strtok(NULL,",");
		}
	delete [] pColor;

	HIGHLIGHT high;
	high.bAnchored = FALSE;
	high.nTokens = 0;
	high.nVars = 0;
	high.bStartVar = FALSE;
	high.strGroup = pszGroup;
	high.bEnabled = TRUE;
	high.wAttr = wAttr;

	if (*pszMask == '^')
	{
		high.bAnchored = TRUE;
		nLen--;
		pszMask++;
	}

	int nIndex = 0;
	while(nIndex < nLen)
	{
		// Need to check for the escape char to see if they
		// are just trying to use a % instead of indicating
		// a variable.
		if (*(pszMask+nIndex) == _config.chEscape && nIndex+1 < nLen && *(pszMask+nIndex+1) == '%')
		{
			high.strToken[high.nTokens] += '%';
			nIndex += 2;				
			continue;
		}

		// Found a variable.
		if (*(pszMask+nIndex) == '%' && nIndex+1 < nLen && isdigit(*(pszMask+nIndex+1)))
		{
			// Need to know if the trigger starts with a variable.
			if (!nIndex)
				high.bStartVar = TRUE;

			// Should not ever have an empty token.  This would be caused
			// by creating a trigger like this: "%0%1 stuff" which would
			// be impossible to evaluate.
			if (high.strToken[high.nTokens].IsEmpty() && (nIndex != 0 && high.bStartVar != TRUE))
				return(FALSE);

			// Advance the token counter only if we are not starting with a var.
			if (!nIndex && high.bStartVar)
			{
				// Don't advance the token count.
			}
			else
				high.nTokens++;

			// Should have more than 10 vars either.
			if (high.nVars > 9)
				return(FALSE);
			high.nVars++;
			nIndex += 2;
			continue;
		}

		// Need to make sure we don't try to store more thant 10
		// tokens.
		if (high.nTokens > 9)
			return(FALSE);
		high.strToken[high.nTokens] += *(pszMask+nIndex);
		nIndex++;
	}
	// If dropped out of loop because of reaching the end of line
	// should have to increment the token counter unless it is
	// empty.
	if (!high.strToken[high.nTokens].IsEmpty())
		high.nTokens++;

	// A highlight declared as anchored, but having a variable at the
	// front of it is pointless.  Make sure it doesn't happen.
	if (high.bAnchored && high.bStartVar)
		high.bAnchored = FALSE;

	// Put the pointer back to how it used to be for comparisons.
	if (high.bAnchored)
	{
		nLen++;
		pszMask--;
	}

	CString strTemp;
	HIGHLIGHT *pHigh;
	for (int i=0;i<m_nCount;i++)
	{
		pHigh = (HIGHLIGHT *)m_ptrList.GetAt(i);
		HighlightToMask(pHigh,strTemp);

		// high already exists.
		if (strTemp == pszMask)
		{
			CopyHighlight(pHigh,&high);
			return(i+1);
		}

		if (stricmp((pHigh->bAnchored ? strTemp.Right(strTemp.GetLength()-1) : strTemp), 
			(*pszMask == '^' ? pszMask+1 : pszMask)) > 0)
		{
			HIGHLIGHT *pNew = new HIGHLIGHT;
			CopyHighlight(pNew,&high);
			m_ptrList.InsertAt(i,pNew);
			m_nCount++;
			return(i+1);
		}
	}

	// Fell thru the loop, must go at the end.
	HIGHLIGHT *pNew = new HIGHLIGHT;
	CopyHighlight(pNew,&high);
	m_ptrList.SetAtGrow(i,pNew);
	m_nCount++;
	return(m_nCount);
}

BOOL CHighlights::Remove(const char *pszMask)
{
	HIGHLIGHT *pHigh = FindExact(pszMask);
	if (pHigh == NULL)
		return(FALSE);
	m_ptrList.RemoveAt(m_nGetIndex);
	m_nCount--;
	delete pHigh;
	return(TRUE);
}

BOOL CHighlights::Remove(int nIndex)
{
	if (nIndex < 0 || nIndex >= m_nCount)
		return(FALSE);

	HIGHLIGHT *pHigh = (HIGHLIGHT *)m_ptrList.GetAt(nIndex);
	if (pHigh == NULL)
		return(FALSE);
	m_ptrList.RemoveAt(nIndex);
	m_nCount--;
	delete pHigh;
	return(TRUE);
}

void CHighlights::CopyHighlight(HIGHLIGHT *pDest, HIGHLIGHT *pSource)
{
	pDest->bAnchored = pSource->bAnchored;
	pDest->nTokens = pSource->nTokens;
	pDest->nVars = pSource->nVars;
	for (int i=0;i<10;i++)
		pDest->strToken[i] = pSource->strToken[i];
	pDest->bStartVar = pSource->bStartVar;
	pDest->strGroup = pSource->strGroup;
	pDest->bEnabled = pSource->bEnabled;
	pDest->wAttr = pSource->wAttr;
}

void CHighlights::HighlightToMask(HIGHLIGHT *pHigh, CString &strMask)
{
	strMask.Empty();
	if (pHigh->bAnchored)
		strMask += "^";

	int nVarIndex = 0;
	CString strTemp;
	if (pHigh->bStartVar)
	{
		strTemp.Format("%%%c",(char)(nVarIndex+'0'));
		strMask += strTemp;
		nVarIndex++;
	}

	for (int i=0;i<pHigh->nTokens;i++)
	{
		strMask += pHigh->strToken[i];
		if (nVarIndex < pHigh->nVars)
		{
			strTemp.Format("%%%c",(char)(nVarIndex+'0'));
			strMask += strTemp;
			nVarIndex++;
		}
	}
}

int CHighlights::DisableGroup(const char *pszGroup)
{
	int nCount = 0;
	HIGHLIGHT *pHigh = GetFirst();
	while(pHigh != NULL)
	{
		if (pHigh->strGroup == pszGroup)
		{
			pHigh->bEnabled = FALSE;
			nCount++;
		}
		pHigh = GetNext();
	}
	return(nCount);
}

int CHighlights::EnableGroup(const char *pszGroup)
{
	int nCount = 0;
	HIGHLIGHT *pHigh = GetFirst();
	while(pHigh != NULL)
	{
		if (pHigh->strGroup == pszGroup)
		{
			pHigh->bEnabled = TRUE;
			nCount++;
		}
		pHigh = GetNext();
	}
	return(nCount);
}