C + + gets all file names (or paths) under the specified folder

2. #include <io.h>
4. #include <fstream>
6. #include <string>
8. #include <vector>
10. #include <iostream>
12. Using namespace std;
16. In fact, two strings together, such as a string unfortunately written: str1+str2+ "xxx" ...
18. Get all the file names
20. void Getallfiles (string path, vector<string>& files)
22. {
26. long hfile = 0;
28. //File information
30. struct _finddata_t fileinfo; The structure used to store file information
32. string P;
34. if (hfile = _findfirst (p.assign (Path). Append ("\\*"). C_str (), &fileinfo))! =-1) //First time lookup
36. {
38. Do
40. {
42. if ((Fileinfo.attrib & _a_subdir)) //If you find a folder
44. {
46. if (strcmp (Fileinfo.name,".")! = 0 && strcmp (fileinfo.name,"...")! = 0) //Enter folder to find
48. {
50. Files.push_back (p.assign (Path). Append ("\ \"). Append (Fileinfo.name));
52. Getallfiles (p.assign (Path). Append ("\ \"). Append (Fileinfo.name), files);
54. }
56. }
58. Else //If the find is not a folder
60. {
62. Files.push_back (P.assign (fileinfo.name)); //Save the file path, or you can save only the filename: p.assign (path). append ("\ \"). Append (fileinfo.name)
64. }
68. }while (_findnext (hfile, &fileinfo) = = 0);
72. _findclose (hfile); //End lookup
74. }
78. }
82. Get file names in a specific format
84. void Getallformatfiles (string path, vector<string>& files,string format)
86. {
88. //File handle
90. long hfile = 0;
92. //File information
94. struct _finddata_t fileinfo;
96. string P;
98. if (hfile = _findfirst (p.assign (Path). Append ("\\*" + format). C_STR (), &fileinfo))! =-1)
100. {
102. Do
104. {
106. if ((Fileinfo.attrib & _a_subdir))
108. {
110. if (strcmp (Fileinfo.name,".")! = 0 && strcmp (fileinfo.name,"...")! = 0)
112. {
114. //files.push_back (p.assign (Path). append ("\ \"). Append (Fileinfo.name));
116. Getallformatfiles (p.assign (Path). Append ("\ \"). Append (Fileinfo.name), Files,format);
118. }
120. }
122. Else
124. {
126. Files.push_back (P.assign (fileinfo.name)); //Save the file path, or you can save only the filename: p.assign (path). append ("\ \"). Append (fileinfo.name)
128. }
130. }while (_findnext (hfile, &fileinfo) = = 0);
134. _findclose (hfile);
136. }
138. }
142. The function has two parameters, the first is a path string (string type, preferably an absolute path);
144. The second parameter is a folder with a file name that stores variables (vector type, reference pass).
146. Call the format in the main function (and save the result in the file "AllFiles.txt", the total number of first actions):
150. int main ()
152. {
154. String filePath = "d:\\ document \ \ \ course \ \ Data Structure \\MOOC practice \\testPCL\\x64\\Debug";
156. vector<string> files;
158. char * distall = "AllFiles.txt";
162. //Read all files, including files of sub-files
164. //getallfiles (FilePath, files);
168. //Read all files in JPG format
170. string format = ". dll";
172. Getallformatfiles (FilePath, Files,format);
174. Ofstream ofn (Distall);
176. int size = Files.size ();
178. ofn<<size<<endl;
180. For (int i = 0;i<size;i++)
182. {
184. ofn<<files[i]<<endl; //write file
186. cout<< Files[i] << Endl; //Output to screen
188. }
190. Ofn.close ();
192. return 0;
194. }

C + + gets all file names (or paths) under the specified folder