| #include "../../git-compat-util.h" |
| |
| struct DIR { |
| struct dirent dd_dir; /* includes d_type */ |
| HANDLE dd_handle; /* FindFirstFile handle */ |
| int dd_stat; /* 0-based index */ |
| }; |
| |
| static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAA *fdata) |
| { |
| /* copy file name from WIN32_FIND_DATA to dirent */ |
| memcpy(ent->d_name, fdata->cFileName, sizeof(ent->d_name)); |
| |
| /* Set file type, based on WIN32_FIND_DATA */ |
| if (fdata->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
| ent->d_type = DT_DIR; |
| else |
| ent->d_type = DT_REG; |
| } |
| |
| DIR *opendir(const char *name) |
| { |
| char pattern[MAX_PATH]; |
| WIN32_FIND_DATAA fdata; |
| HANDLE h; |
| int len; |
| DIR *dir; |
| |
| /* check that name is not NULL */ |
| if (!name) { |
| errno = EINVAL; |
| return NULL; |
| } |
| /* check that the pattern won't be too long for FindFirstFileA */ |
| len = strlen(name); |
| if (len + 2 >= MAX_PATH) { |
| errno = ENAMETOOLONG; |
| return NULL; |
| } |
| /* copy name to temp buffer */ |
| memcpy(pattern, name, len + 1); |
| |
| /* append optional '/' and wildcard '*' */ |
| if (len && !is_dir_sep(pattern[len - 1])) |
| pattern[len++] = '/'; |
| pattern[len++] = '*'; |
| pattern[len] = 0; |
| |
| /* open find handle */ |
| h = FindFirstFileA(pattern, &fdata); |
| if (h == INVALID_HANDLE_VALUE) { |
| DWORD err = GetLastError(); |
| errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err); |
| return NULL; |
| } |
| |
| /* initialize DIR structure and copy first dir entry */ |
| dir = xmalloc(sizeof(DIR)); |
| dir->dd_handle = h; |
| dir->dd_stat = 0; |
| finddata2dirent(&dir->dd_dir, &fdata); |
| return dir; |
| } |
| |
| struct dirent *readdir(DIR *dir) |
| { |
| if (!dir) { |
| errno = EBADF; /* No set_errno for mingw */ |
| return NULL; |
| } |
| |
| /* if first entry, dirent has already been set up by opendir */ |
| if (dir->dd_stat) { |
| /* get next entry and convert from WIN32_FIND_DATA to dirent */ |
| WIN32_FIND_DATAA fdata; |
| if (FindNextFileA(dir->dd_handle, &fdata)) { |
| finddata2dirent(&dir->dd_dir, &fdata); |
| } else { |
| DWORD lasterr = GetLastError(); |
| /* POSIX says you shouldn't set errno when readdir can't |
| find any more files; so, if another error we leave it set. */ |
| if (lasterr != ERROR_NO_MORE_FILES) |
| errno = err_win_to_posix(lasterr); |
| return NULL; |
| } |
| } |
| |
| ++dir->dd_stat; |
| return &dir->dd_dir; |
| } |
| |
| int closedir(DIR *dir) |
| { |
| if (!dir) { |
| errno = EBADF; |
| return -1; |
| } |
| |
| FindClose(dir->dd_handle); |
| free(dir); |
| return 0; |
| } |