CFileEngine

 1 #ifndef _FILE_ENGINE_H_031104_
 2 #define _FILE_ENGINE_H_031104_
 3 
 4 #include "DataEngine.h"
 5 
 6 enum fileengine_type
 7 {
 8     ISAM,
 9     TIANWANG,
10     LINK4SE
11 };
12 
13 class CUrl;
14 class CPage;
15 
16 struct file_arg
17 {
18     CUrl *pUrl;
19     CPage *pPage;
20 };
21 
22 class CFileEngine : public CDataEngine//仍然只能用作基类
23 {
24 public:
25     ofstream m_ofsFile;
26 
27 public:
28     CFileEngine();
29     CFileEngine(string str);
30     virtual ~CFileEngine();
31 
32     int GetEngineType() { return FILE_ENGINE; }
33     virtual int GetFileType() = 0;
34 
35     bool Open(string str);
36 
37     inline void Close() { m_ofsFile.close(); }
38 
39 };
40 
41 #endif /* _FILE_ENGINE_H_031104_ */

 1 #include "FileEngine.h"
 2 
 3 CFileEngine::CFileEngine()
 4 {
 5 }
 6 
 7 CFileEngine::CFileEngine(string str) : CDataEngine (str)
 8 {
 9     m_ofsFile.open(m_str.c_str(), ios::out|ios::app|ios::binary);
10 
11     if( !m_ofsFile ){
12         cerr << "cannot open " << m_str << "for output" << endl;
13     }
14 }
15 
16 CFileEngine::~CFileEngine()
17 {
18     m_ofsFile.close();
19 }
20 
21 bool CFileEngine::Open(string str)
22 {
23     m_str = str;
24 
25     m_ofsFile.open(m_str.c_str(), ios::out|ios::app|ios::binary);
26 
27     if( !m_ofsFile )
28     {
29         cerr << "cannot open " << m_str << "for output" << endl;
30         return false;
31     } 
32     else
33     {
34         return true;
35     }
36 }