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August 13, 2024 02:28
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Cross-platform (POSIX and Win32) recursive directory and file traversal example in C99
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| // Recursive directory and file traversal | |
| // I don't make any claim to the code below, as it's hacked together from various publicly-available examples | |
| // Targeting gnu99/c99 | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| #ifdef _WIN32 | |
| #include <windows.h> | |
| #else | |
| #include <dirent.h> | |
| #include <sys/stat.h> | |
| #endif | |
| void traverse_directory(const char *dir_path) { | |
| #ifdef _WIN32 | |
| WIN32_FIND_DATA find_data; | |
| HANDLE hFind; | |
| char search_path[1024]; | |
| snprintf(search_path, sizeof(search_path), "%s\\*", dir_path); | |
| hFind = FindFirstFile(search_path, &find_data); | |
| if (hFind == INVALID_HANDLE_VALUE) { | |
| fprintf(stderr, "Error opening directory: %s\n", dir_path); | |
| return; | |
| } | |
| do { | |
| if (strcmp(find_data.cFileName, ".") == 0 || strcmp(find_data.cFileName, "..") == 0) { | |
| continue; | |
| } | |
| char path[1024]; | |
| snprintf(path, sizeof(path), "%s\\%s", dir_path, find_data.cFileName); | |
| if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { | |
| printf("Directory: %s\n", path); | |
| traverse_directory(path); | |
| } else { | |
| printf("File: %s\n", path); | |
| } | |
| } while (FindNextFile(hFind, &find_data) != 0); | |
| FindClose(hFind); | |
| #else | |
| struct dirent *entry; | |
| DIR *dp = opendir(dir_path); | |
| if (dp == NULL) { | |
| perror("opendir"); | |
| return; | |
| } | |
| while ((entry = readdir(dp))) { | |
| char path[1024]; | |
| struct stat statbuf; | |
| if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) { | |
| continue; | |
| } | |
| snprintf(path, sizeof(path), "%s/%s", dir_path, entry->d_name); | |
| if (stat(path, &statbuf) == -1) { | |
| perror("stat"); | |
| continue; | |
| } | |
| if (S_ISDIR(statbuf.st_mode)) { | |
| printf("Directory: %s\n", path); | |
| traverse_directory(path); | |
| } else { | |
| printf("File: %s\n", path); | |
| } | |
| } | |
| closedir(dp); | |
| #endif | |
| } |
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