| #include "../../git-compat-util.h" |
| |
| typedef struct dirent_DIR { |
| struct DIR base_dir; /* extend base struct DIR */ |
| struct dirent dd_dir; /* includes d_type */ |
| HANDLE dd_handle; /* FindFirstFile handle */ |
| int dd_stat; /* 0-based index */ |
| char dd_name[MAX_PATH * 3]; /* file name (* 3 for UTF-8 conversion) */ |
| } dirent_DIR; |
| |
| DIR *(*opendir)(const char *dirname) = dirent_opendir; |
| |
| static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAW *fdata) |
| { |
| /* convert UTF-16 name to UTF-8 (d_name points to dirent_DIR.dd_name) */ |
| xwcstoutf(ent->d_name, fdata->cFileName, MAX_PATH * 3); |
| |
| /* 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; |
| } |
| |
| static struct dirent *dirent_readdir(dirent_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_DATAW fdata; |
| if (FindNextFileW(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; |
| } |
| |
| static int dirent_closedir(dirent_DIR *dir) |
| { |
| if (!dir) { |
| errno = EBADF; |
| return -1; |
| } |
| |
| FindClose(dir->dd_handle); |
| free(dir); |
| return 0; |
| } |
| |
| DIR *dirent_opendir(const char *name) |
| { |
| wchar_t pattern[MAX_LONG_PATH + 2]; /* + 2 for "\*" */ |
| WIN32_FIND_DATAW fdata; |
| HANDLE h; |
| int len; |
| dirent_DIR *dir; |
| |
| /* convert name to UTF-16 and check length */ |
| if ((len = xutftowcs_path_ex(pattern, name, MAX_LONG_PATH, -1, |
| MAX_PATH - 2, core_long_paths)) < 0) |
| return NULL; |
| |
| /* |
| * append optional '\' and wildcard '*'. Note: we need to use '\' as |
| * Windows doesn't translate '/' to '\' for "\\?\"-prefixed paths. |
| */ |
| if (len && !is_dir_sep(pattern[len - 1])) |
| pattern[len++] = '\\'; |
| pattern[len++] = '*'; |
| pattern[len] = 0; |
| |
| /* open find handle */ |
| h = FindFirstFileW(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(dirent_DIR)); |
| dir->base_dir.preaddir = (struct dirent *(*)(DIR *dir)) dirent_readdir; |
| dir->base_dir.pclosedir = (int (*)(DIR *dir)) dirent_closedir; |
| dir->dd_dir.d_name = dir->dd_name; |
| dir->dd_handle = h; |
| dir->dd_stat = 0; |
| finddata2dirent(&dir->dd_dir, &fdata); |
| return (DIR*) dir; |
| } |