#include "StdAfx.h"
#include "WCStringList.h"

static wchar_t * WStrNew(const wchar_t *src)
{
	if (src == NULL) 
	{
		return NULL;
	}
	
	int len = wcslen(src)+1;
	wchar_t *res = new wchar_t[len];
	memcpy(res, src, len*sizeof(wchar_t));
	return res;
}

WCStringList::WCStringList() 
{
	
}

WCStringList::WCStringList(WCStringList &szSrc)
{
	*this = szSrc;
}

WCStringList::WCStringList(const wchar_t **pBeg, int nCount)
{
	m_nDelFlag = 1;
	const wchar_t **p = pBeg;
	for ( int i = 0; i < nCount; i++)
	{
		Append(WStrNew(*p));
		p++;
	}
}

WCStringList::~WCStringList() 
{

}

// 返回符号表的序号: -1表示符号不在列表里
// 不分大小写
int WCStringList::Index(const wchar_t *pBeg, int nCaseSense)
{
	if (!pBeg) 
	{
		return -1;
	}
	
	int nLen = Length();
	if (!nCaseSense)
	{
		for (int i = 0; i < nLen; i++) 
		{
			if (_wcsicmp((*this)[i], pBeg) == 0)
			{
				return i;
			}
		}
	}
	else
	{
		for (int i = 0; i < nLen; i++) 
		{
			if (wcscmp((*this)[i], pBeg) == 0)
			{
				return i;
			}
		}
	}
	
	return -1;
}

WCStringList & WCStringList::operator =(WCStringList &szSrc)
{
	Reset();
	int nLen = szSrc.Length();
	
	for (int i = 0; i < nLen; i++)
	{
		Append(WStrNew(szSrc[i]));
	}
	
	return *this;
}

typedef int (* WStrCompFun)(const wchar_t *, const wchar_t *);

wchar_t * WCStringList::MaxValue(int nCaseSence)
{
	WStrCompFun cmp = nCaseSence ? wcscmp : _wcsicmp;
	int nLen = Length();
	wchar_t *pszRes = NULL;
	
	for (int i = 0; i < nLen; i++)
	{
		if (!pszRes)
		{
			pszRes = (*this)[i];
		}
		else
		{
			pszRes = cmp(pszRes,(*this)[i]) >= 0 ? pszRes : (*this)[i];
		}
	}
	
	return pszRes;
}

wchar_t * WCStringList::MinValue(int nCaseSence)
{
	WStrCompFun cmp = nCaseSence ? wcscmp : _wcsicmp;
	int nLen = Length();
	wchar_t *pszRes = NULL;
	
	for (int i = 0; i < nLen; i++)
	{
		if (!pszRes) 
		{
			pszRes = (*this)[i];
		}
		else 
		{
			pszRes= cmp(pszRes,(*this)[i]) <= 0 ? pszRes : (*this)[i];
		}
	}
	return pszRes;
}