╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ Files.zig ────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
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998 999 // the index of the entry the route named (data.selected_file), or null if none. 1000 fn selectedFileIndex(data: *const Self) ?usize { 1001 const name = data.selected_file orelse return null; 1002 for (data.entries, 0..) |entry, i| { 1003 if (!entry.is_dir and std.mem.eql(u8, entry.name, name)) return i; 1004 } 1005 return null; 1006 } 1007 1008 // an "a:" link to the files route at `path`, pinned to the listing's ref, so 1009 // following it navigates to that directory's listing. 1010 fn dirLink(page_arena: *std.heap.ArenaAllocator, data: *const Self, path: []const u8) ![]const u8 { 1011 const route = data.filesRoute(path, 0) orelse return error.RouteTooLong; 1012 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{try route.toUrl(page_arena)}); 1013 } 1014 1015 // a link to the file's route. a preloaded file gets an "ai:" link 1016 // (crossPageLink ignores it, so a click selects the row in place and shows its 1017 // contents); an unloaded file gets an "a:" link, so activating it reloads the 1018 // page with that file selected and its content read. 1019 fn fileLink(page_arena: *std.heap.ArenaAllocator, data: *const Self, path: []const u8, loaded: bool, line: usize) ![]const u8 { 1020 const route = data.filesRoute(path, line) orelse return error.RouteTooLong; 1021 const prefix = if (loaded) "ai:" else "a:"; 1022 return std.fmt.allocPrint(page_arena.allocator(), "{s}{s}", .{ prefix, try route.toUrl(page_arena) }); 1023 } 1024 1025 // the url `line` value for a content window: its first line's 1-based number, 1026 // except the first window, which serializes as unset (0). 1027 fn lineNumber(window_start: usize) usize { 1028 return if (window_start == 0) 0 else window_start + 1; 1029 } 1030 1031 // `dir`/`name`, or just `name` at the root. 1032 pub fn childDir(arena: std.mem.Allocator, dir: []const u8, name: []const u8) ![]const u8 { 1033 return if (dir.len == 0) name else std.fmt.allocPrint(arena, "{s}/{s}", .{ dir, name }); 1034 } 1035 1036 // `dir` with its last segment removed ("" when `dir` has a single segment). 1037 fn parentDir(dir: []const u8) []const u8 { 1038 const slash = std.mem.lastIndexOfScalar(u8, dir, '/') orelse return ""; 1039 return dir[0..slash]; 1040 } 1041 1042 // a search result's bottom label: the directory it sits in, empty at the root. 1043 // a directory too wide for the list column is clipped from the left. 1044 fn resultDirLabel(aa: std.mem.Allocator, path: []const u8) ![]const u8 { 1045 const slash = std.mem.lastIndexOfScalar(u8, path, '/') orelse return ""; 1046 const dir = path[0..slash]; 1047 // the row's border and the label's padding take two columns each 1048 const max_width = View.list_max_width - 4; 1049 var width = try xitui.width.displayWidth(dir); 1050 if (width <= max_width) return std.fmt.allocPrint(aa, " {s} ", .{dir}); 1051 1052 const ellipsis = ".."; 1053 var iter = (try std.unicode.Utf8View.init(dir)).iterator(); 1054 var start: usize = 0; 1055 while (width > max_width - ellipsis.len) { 1056 const slice = iter.nextCodepointSlice() orelse break; 1057 width -= xitui.width.cellWidth(try std.unicode.utf8Decode(slice)); 1058 start += slice.len; 1059 } 1060 return std.fmt.allocPrint(aa, " " ++ ellipsis ++ "{s} ", .{dir[start..]}); 1061 } 1062