// 功能 : 格式化字符串
// 参数 : rString - 输出参数,格式化后的字符串将保存在此字符串中
// nIDS - 将进行替换操作的格式字符串的资源ID
// lpsz1 - 指向将替换格式字符串中“%1”字符的字符串
// lpsz2 - 指向将替换格式字符串中“%2”字符的字符串
void AFXAPI AfxFormatString1(CString& rString, UINT nIDS, LPCTSTR lpsz1);
void AFXAPI AfxFormatString2(CString& rString, UINT nIDS, LPCTSTR lpsz1, LPCTSTR lpsz2);
// Implementation string helpers
void AFXAPI AfxFormatStrings(CString& rString, UINT nIDS, LPCTSTR const* rglpsz, int nString);
void AFXAPI AfxFormatStrings(CString& rString, LPCTSTR lpszFormat, LPCTSTR const* rglpsz, int nString);
// 功能 : 获取子字符串
// 参数 : rString - 输出参数,保存子字符串
// lpszFullString - 源字符串
// iSubString - 子字符串索引,从0开始计数
// chSep - 子字符串间的分隔字符,默认为''\n''
BOOL AFXAPI AfxExtractSubString(CString& rString, LPCTSTR lpszFullString, int iSubString, TCHAR chSep = ''\n'');
/////////////////////////////////////////////////
////////////////////////////////////////////////
///
// Strings in format "..%1 . %2 ." etc. void AFXAPI AfxFormatStrings(CString& rString, UINT nIDS,
LPCTSTR const* rglpsz, int nString)
{
TCHAR szFormat[256];
if (!AfxLoadString(nIDS, szFormat) != 0)
{
TRACE1("Error: failed to load AfxFormatString string 0x%04x.\n", nIDS);
ASSERT(FALSE);
return;
}
AfxFormatStrings(rString, szFormat, rglpsz, nString);
}
void AFXAPI AfxFormatStrings(CString& rString, LPCTSTR lpszFormat,
LPCTSTR const* rglpsz, int nString)
{
// 计算结果字符串的长度
int nTotalLen = 0;
LPCTSTR pchSrc = lpszFormat;
while (*pchSrc != ''\0'')
{
if (pchSrc[0] == ''%'' &&
( (pchSrc >= ''0'' && pchSrc <= ''9'') ||
(pchSrc >= ''A'' && pchSrc <= ''Z'')) )
{
// %A comes after %9 -- we''ll need it someday
int i;
if (pchSrc >''9'')
i = 9 + (pchSrc - ''A'');
else
i = pchSrc - ''1'';
pchSrc += 2;
if (i >= nString)
++nTotalLen;
else if (rglpsz[i] != NULL)
nTotalLen += lstrlen(rglpsz[i]);
}
else
{
if (_istlead(*pchSrc))
++nTotalLen, ++pchSrc;
++pchSrc;
++nTotalLen;
}
}
pchSrc = lpszFormat;
LPTSTR pchDest = rString.GetBuffer(nTotalLen);
while (*pchSrc != ''\0'')
{
if (pchSrc[0] == ''%'' &&
( (pchSrc >= ''0'' && pchSrc <= ''9'') ||
(pchSrc >= ''A'' && pchSrc <= ''Z'')) )
{
// %A comes after %9 -- we''ll need it someday
int i;
if (pchSrc >''9'')
i = 9 + (pchSrc - ''A'');
else
i = pchSrc - ''1'';
pchSrc += 2;
if (i >= nString)
{
TRACE1("Error: illegal string index requested %d.\n", i);
*pchDest++ = ''?'';
}
else if (rglpsz[i] != NULL)
{
lstrcpy(pchDest, rglpsz[i]);
pchDest += lstrlen(pchDest);
}
}
else
{
if (_istlead(*pchSr
c)) // *pchSrc是否多字节字符的首字节
*pchDest++ = *pchSrc++; // 拷贝首字节
*pchDest++ = *pchSrc++;
}
}
rString.ReleaseBuffer((int)((LPCTSTR)pchDest - (LPCTSTR)rString));
// ReleaseBuffer will assert if we went too far
}
void AFXAPI AfxFormatString1(CString& rString, UINT nIDS, LPCTSTR lpsz1)
{
AfxFormatStrings(rString, nIDS, &lpsz1, 1);
}
void AFXAPI AfxFormatString2(CString& rString, UINT nI