文本分割

用Ipod nano3看TXT只支持4K，郁闷，自己动手写个文本分割工具吧。

 

建立MFC对话框程序，主要分割代码如下

 

bool CipodtxtDlg::split(void)
{
    CString cs, out, tmp;
    CFile cif, cof;
    CFileException ex;
    char buffer[4096] = { 0 };
    char *p;
    int nread, n;

    GetDlgItemText(IDC_EDIT1, cs);

    if(!cif.Open(cs, CFile::modeRead, &ex))
    {
        return false;
    }
    tmp = cs.Mid(0, cs.ReverseFind('.'));

    int nfile = (int)(cif.GetLength() / 4096) + 1;
    for(int i=0; nread=cif.Read(buffer, 4096), nread>0;++i)
    {
        out.Format(_TEXT("%s_%.8d.txt"), (LPCTSTR)tmp, i);
        if(cof.Open(out, CFile::modeCreate|CFile::modeWrite, &ex))
        {
            p = buffer+4095;
            n = 0;


            //如果最后一个字节不是完整汉字，本文件放弃，由下一个文件输出。
            while(!isascii(*p) && p!=buffer)
            {
                p--;
                n++;
            }
            if(n%2==1)
            {
                nread--;
                cif.Seek(-1, CFile::current);
            }

            cof.Write(buffer, nread);
            cof.Close();
            memset(buffer, 0, 4096);
        }
        m_pc.SetPos(i*100/nfile);
    }

    cif.Close();
    m_pc.SetPos(100);
    return true;
}