API的文件遍歷，未使用CFileFind，由於裏面牽扯MFC，編個DLL好麻煩。

 1 // FindFileDebug.cpp : 定義控制檯應用程序的入口點。
 2 //
 3 
 4 #include "stdafx.h"
 5 #include "FindFileDebug.h"
 6 
 7 #ifdef _DEBUG
 8 #define new DEBUG_NEW
 9 #endif
10 
11 #define IS_DIRECTORY(x) ((x) & (FILE_ATTRIBUTE_DIRECTORY))
12 #define IS_FAILED (0)
13 
14 void TraversFile(CString csPath, CString & csDatabuffer);
15 BOOL IsDot(LPCTSTR ptStr);
16 using namespace std;
17 
18 #define TESTPATH ("G:\\Python腳本\\PyCahrm項目")
19 
20 int main()
21 {
22     int nRetCode = 0;
23     CString filepath = CString(TESTPATH);
24     CString FileBuffer;
25     TraversFile(filepath, FileBuffer);
26     printf("錯誤: GetModuleHandle 失敗\n");
27     system("pause");
28     return nRetCode;
29 }
30 
31 
32 void TraversFile(CString csPath, CString & csDatabuffer)
33 {
34     CString csPrePath = csPath;
35     CString csNextPath = csPath;
36     CString csNextLine = CString("\r\n");
37     CString csSlash = CString("\\");
38 
39     WIN32_FIND_DATA FindFileData = { 0 };
40     HANDLE hFistFind = FindFirstFile(csPath + CString("\\*.*"), (LPWIN32_FIND_DATA)&FindFileData);
41     if ( INVALID_HANDLE_VALUE == hFistFind)
42     {
43         printf("Failed to open file" );
44     }
45     else
46     {
47         wcout << FindFileData.cFileName;
48     }
49     do {
50         if (IsDot(FindFileData.cFileName))
51         {
52             continue;
53         }
54         if (IS_DIRECTORY(FindFileData.dwFileAttributes))
55         {
56             csNextPath += "\\";
57             csNextPath += FindFileData.cFileName;
58             TraversFile(csNextPath, csDatabuffer);
59             csNextPath = csPrePath;
60         }
61         else
62         {
63             csDatabuffer += csNextPath + csSlash + FindFileData.cFileName + csNextLine;
64             wcout << FindFileData.cFileName;
65         }
66     } while (FindNextFile(hFistFind, (LPWIN32_FIND_DATA)&FindFileData) != IS_FAILED);
67     FindClose(hFistFind);
68     hFistFind = INVALID_HANDLE_VALUE;
69 }
70 
71 BOOL IsDot(LPCTSTR ptStr)
72 {
73     size_t ulen = wcslen (ptStr);
74     if (ulen >= 256)
75     {
76         return TRUE;
77     }
78     while (ulen--)
79     {
80         if (ptStr[ulen] != L'.')
81         {
82             return FALSE;
83         }
84     }
85     return TRUE;
86 }

已適配的DLL源文件

  1 // FileFunction20190101Dll.cpp : 定義 DLL 應用程序的導出函數。
  2 //
  3 
  4 #include "stdafx.h"
  5 #include "string"
  6 #define IS_DIRECTORY(x) ((x) & (FILE_ATTRIBUTE_DIRECTORY))
  7 #define IS_FAILED (0)
  8 
  9 using namespace std;
 10 
 11 string g_csBuffer;
 12 
 13 extern "C"
 14 {
 15     BOOL IsDot(LPCSTR ptStr)
 16     {
 17         size_t ulen = strlen(ptStr);
 18         if (ulen >= 256)
 19         {
 20             return TRUE;
 21         }
 22         while (ulen--)
 23         {
 24             if (ptStr[ulen] != '.')
 25             {
 26                 return FALSE;
 27             }
 28         }
 29         return TRUE;
 30     }
 31 }
 32 extern "C"      // 此處extern "c" 爲解決c/c++兼容問題 
 33 {
 34     _declspec(dllexport)void TraversFile(string csPath, string & csDatabuffer)
 35     {
 36         string csPrePath = csPath;
 37         string csNextPath = csPath;
 38         string csNextLine = string("\r\n");
 39         string csSlash = string("\\");
 40 
 41         WIN32_FIND_DATAA FindFileData = { 0 };
 42         HANDLE hFistFind = FindFirstFileA((csPath + string("\\*.*")).c_str(), (LPWIN32_FIND_DATAA)&FindFileData);
 43         if (INVALID_HANDLE_VALUE == hFistFind)
 44         {
 45             printf("Failed to open file:%s,%s", csPath.c_str(), string("\\*.*").c_str());
 46             return;
 47         }
 48         do {
 49             if (IsDot(FindFileData.cFileName))
 50             {
 51                 continue;
 52             }
 53             if (IS_DIRECTORY(FindFileData.dwFileAttributes))
 54             {
 55                 csNextPath += "\\";
 56                 csNextPath += FindFileData.cFileName;
 57                 TraversFile(csNextPath, csDatabuffer);
 58                 csNextPath = csPrePath;
 59             }
 60             else
 61             {
 62                 csDatabuffer += csNextPath + csSlash + FindFileData.cFileName + csNextLine;
 63             }
 64         } while (FindNextFileA(hFistFind, (LPWIN32_FIND_DATAA)&FindFileData) != IS_FAILED);
 65         FindClose(hFistFind);
 66         hFistFind = INVALID_HANDLE_VALUE;
 67     }
 68 }
 69 
 70 
 71 extern "C"
 72 {
 73     _declspec(dllexport)LPCSTR TraversFileInterface(char * pFilePath, int * pLength)
 74     {
 75         if (!g_csBuffer.empty())
 76         {
 77             g_csBuffer.clear();
 78         }
 79         string csPath = string(pFilePath);
 80         TraversFile(csPath, g_csBuffer);
 81         *pLength = g_csBuffer.length();
 82         
 83         return g_csBuffer.c_str();
 84     }
 85 }
 86 
 87 extern "C"
 88 {
 89     _declspec(dllexport)unsigned int TraversFileInterfaceRelease()
 90     {
 91         g_csBuffer.clear();
 92         return 0;
 93     }
 94 }
 95 
 96 extern "C"
 97 {
 98     _declspec(dllexport)unsigned int PrintHex(unsigned char * pData, unsigned int length)
 99     {
100         for (unsigned int unloop = 0; unloop < length; ++unloop)
101         {
102             printf("%02x ", pData[unloop]);
103         }
104         return 0;
105     }
106 }