Begin work on os2/dir.odin

2026-08-06 23:58:50 +00:00 · 2024-07-23 16:47:49 +01:00
parent 182454a1c0
commit 8037ace873
11 changed files with 286 additions and 49 deletions
@@ -0,0 +1,118 @@
+package os2
+
+import "base:runtime"
+import "core:time"
+import win32 "core:sys/windows"
+
+@(private)
+_read_directory :: proc(f: ^File, n: int, allocator: runtime.Allocator) -> (files: []File_Info, err: Error) {
+	find_data_to_file_info :: proc(base_path: string, d: ^win32.WIN32_FIND_DATAW, allocator: runtime.Allocator) -> (fi: File_Info, err: Error) {
+		// Ignore "." and ".."
+		if d.cFileName[0] == '.' && d.cFileName[1] == 0 {
+			return
+		}
+		if d.cFileName[0] == '.' && d.cFileName[1] == '.' && d.cFileName[2] == 0 {
+			return
+		}
+		path := concatenate({base_path, `\`, win32_utf16_to_utf8(d.cFileName[:], temp_allocator()) or_else ""}, allocator) or_return
+		fi.fullpath = path
+		fi.name = basename(path)
+		fi.size = i64(d.nFileSizeHigh)<<32 + i64(d.nFileSizeLow)
+
+		if d.dwFileAttributes & win32.FILE_ATTRIBUTE_READONLY != 0 {
+			fi.mode |= 0o444
+		} else {
+			fi.mode |= 0o666
+		}
+
+		is_sym := false
+		if d.dwFileAttributes & win32.FILE_ATTRIBUTE_REPARSE_Point == 0 {
+			is_sym = false
+		} else {
+			is_sym = d.dwReserved0 == win32.IO_REPARSE_TAG_SYMLINK || d.dwReserved0 == win32.IO_REPARSE_TAG_MOUNT_POINT
+		}
+
+		if is_sym {
+			fi.type = .Symlink
+		} else if d.dwFileAttributes & win32.FILE_ATTRIBUTE_DIRECTORY != 0 {
+			fi.type = .Directory
+			fi.mode |= 0o111
+		}
+
+		fi.creation_time     = time.unix(0, win32.FILETIME_as_unix_nanoseconds(d.ftCreationTime))
+		fi.modification_time = time.unix(0, win32.FILETIME_as_unix_nanoseconds(d.ftLastWriteTime))
+		fi.access_time       = time.unix(0, win32.FILETIME_as_unix_nanoseconds(d.ftLastAccessTime))
+		return
+	}
+
+	if f == nil {
+		return nil, .Invalid_File
+	}
+
+	TEMP_ALLOCATOR_GUARD()
+
+	impl := (^File_Impl)(f.impl)
+
+	if !is_directory(impl.name) {
+		return nil, .Invalid_Dir
+	}
+
+	n := n
+	size := n
+	if n <= 0 {
+		n = -1
+		size = 100
+	}
+
+	wpath: []u16
+	{
+		i := 0
+		for impl.wname[i] != 0 {
+			i += 1
+		}
+		wpath = impl.wname[:i]
+	}
+
+
+	wpath_search := make([]u16, len(wpath)+3, context.temp_allocator)
+	copy(wpath_search, wpath)
+	wpath_search[len(wpath)+0] = '\\'
+	wpath_search[len(wpath)+1] = '*'
+	wpath_search[len(wpath)+2] = 0
+
+	find_data := &win32.WIN32_FIND_DATAW{}
+	find_handle := win32.FindFirstFileW(raw_data(wpath_search), find_data)
+	if find_handle == win32.INVALID_HANDLE_VALUE {
+		return nil, _get_platform_error()
+	}
+	defer win32.FindClose(find_handle)
+
+	path := _cleanpath_from_buf(wpath, temp_allocator()) or_return
+
+	dfi := make([dynamic]File_Info, 0, size, allocator)
+	defer if err != nil {
+		for fi in dfi {
+			file_info_delete(fi, allocator)
+		}
+		delete(dfi)
+	}
+	for n != 0 {
+		fi: File_Info
+		fi = find_data_to_file_info(path, find_data, allocator) or_return
+		if fi.name != "" {
+			append(&dfi, fi)
+			n -= 1
+		}
+
+		if !win32.FindNextFileW(find_handle, find_data) {
+			e := _get_platform_error()
+			if pe, _ := is_platform_error(e); pe == i32(win32.ERROR_NO_MORE_FILES) {
+				break
+			}
+			return dfi[:], e
+		}
+	}
+
+	return dfi[:], nil
+}
+