336 lines
14 KiB
Zig
336 lines
14 KiB
Zig
const std = @import("std");
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const tp = @import("thespian");
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const cbor = @import("cbor");
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const log = @import("log");
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const root = @import("root");
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const key = @import("renderer").input.key;
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const mod = @import("renderer").input.modifier;
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const event_type = @import("renderer").input.event_type;
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const ucs32_to_utf8 = @import("renderer").ucs32_to_utf8;
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const project_manager = @import("project_manager");
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const command = @import("command");
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const EventHandler = @import("EventHandler");
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const tui = @import("../../tui.zig");
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const MessageFilter = @import("../../MessageFilter.zig");
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const max_complete_paths = 1024;
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pub fn Create(options: type) type {
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return struct {
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allocator: std.mem.Allocator,
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file_path: std.ArrayList(u8),
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query: std.ArrayList(u8),
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match: std.ArrayList(u8),
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entries: std.ArrayList(Entry),
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complete_trigger_count: usize = 0,
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matched_entry: usize = 0,
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const Self = @This();
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const Entry = struct {
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name: []const u8,
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type: enum { dir, file, link },
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};
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pub fn create(allocator: std.mem.Allocator, _: command.Context) !struct { tui.Mode, tui.MiniMode } {
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const self: *Self = try allocator.create(Self);
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self.* = .{
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.allocator = allocator,
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.file_path = std.ArrayList(u8).init(allocator),
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.query = std.ArrayList(u8).init(allocator),
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.match = std.ArrayList(u8).init(allocator),
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.entries = std.ArrayList(Entry).init(allocator),
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};
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try tui.current().message_filters.add(MessageFilter.bind(self, receive_path_entry));
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try options.load_entries(self);
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if (@hasDecl(options, "restore_state"))
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options.restore_state(self) catch {};
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return .{
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.{
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.handler = EventHandler.to_owned(self),
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.name = options.name(self),
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.description = options.name(self),
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},
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.{},
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};
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}
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pub fn deinit(self: *Self) void {
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tui.current().message_filters.remove_ptr(self);
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self.clear_entries();
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self.entries.deinit();
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self.match.deinit();
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self.query.deinit();
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self.file_path.deinit();
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self.allocator.destroy(self);
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}
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pub fn receive(self: *Self, _: tp.pid_ref, m: tp.message) error{Exit}!bool {
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var evtype: u32 = undefined;
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var keypress: u32 = undefined;
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var egc: u32 = undefined;
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var modifiers: u32 = undefined;
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defer {
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if (tui.current().mini_mode) |*mini_mode| {
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mini_mode.text = self.file_path.items;
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mini_mode.cursor = self.file_path.items.len;
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}
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}
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if (try m.match(.{ "I", tp.extract(&evtype), tp.extract(&keypress), tp.extract(&egc), tp.string, tp.extract(&modifiers) })) {
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self.mapEvent(evtype, keypress, egc, modifiers) catch |e| return tp.exit_error(e, @errorReturnTrace());
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}
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return false;
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}
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fn mapEvent(self: *Self, evtype: u32, keypress: u32, egc: u32, modifiers: u32) !void {
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switch (evtype) {
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event_type.PRESS => try self.mapPress(keypress, egc, modifiers),
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event_type.REPEAT => try self.mapPress(keypress, egc, modifiers),
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event_type.RELEASE => try self.mapRelease(keypress, egc, modifiers),
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else => {},
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}
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}
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fn mapPress(self: *Self, keypress: u32, egc: u32, modifiers: u32) !void {
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const keynormal = if ('a' <= keypress and keypress <= 'z') keypress - ('a' - 'A') else keypress;
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return switch (modifiers) {
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mod.CTRL => switch (keynormal) {
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'Q' => self.cmd("quit", .{}),
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'V' => self.cmd("system_paste", .{}),
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'U' => self.file_path.clearRetainingCapacity(),
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'G' => self.cancel(),
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'C' => self.cancel(),
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'L' => self.cmd("scroll_view_center", .{}),
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'I' => self.insert_bytes("\t"),
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key.SPACE => self.cancel(),
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key.BACKSPACE => self.delete_to_previous_path_segment(),
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else => {},
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},
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mod.ALT => switch (keynormal) {
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'V' => self.cmd("system_paste", .{}),
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else => {},
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},
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mod.ALT | mod.SHIFT => switch (keynormal) {
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'V' => self.cmd("system_paste", .{}),
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else => {},
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},
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mod.SHIFT => switch (keypress) {
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key.TAB => self.reverse_complete_file(),
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else => if (!key.synthesized_p(keypress))
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self.insert_code_point(egc)
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else {},
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},
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0 => switch (keypress) {
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key.UP => self.reverse_complete_file(),
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key.DOWN => self.try_complete_file(),
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key.TAB => self.try_complete_file(),
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key.ESC => self.cancel(),
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key.ENTER => self.select(),
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key.BACKSPACE => if (self.file_path.items.len > 0) {
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self.complete_trigger_count = 0;
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self.file_path.shrinkRetainingCapacity(self.file_path.items.len - 1);
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},
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else => if (!key.synthesized_p(keypress))
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self.insert_code_point(egc)
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else {},
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},
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else => {},
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};
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}
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fn mapRelease(_: *Self, _: u32, _: u32, _: u32) !void {}
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fn insert_code_point(self: *Self, c: u32) !void {
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self.complete_trigger_count = 0;
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var buf: [32]u8 = undefined;
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const bytes = try ucs32_to_utf8(&[_]u32{c}, &buf);
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try self.file_path.appendSlice(buf[0..bytes]);
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}
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fn insert_bytes(self: *Self, bytes: []const u8) !void {
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self.complete_trigger_count = 0;
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try self.file_path.appendSlice(bytes);
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}
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fn cmd(self: *Self, name_: []const u8, ctx: command.Context) tp.result {
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self.complete_trigger_count = 0;
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return command.executeName(name_, ctx);
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}
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fn cancel(_: *Self) void {
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command.executeName("exit_mini_mode", .{}) catch {};
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}
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fn select(self: *Self) void {
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options.select(self);
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}
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fn clear_entries(self: *Self) void {
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for (self.entries.items) |entry| self.allocator.free(entry.name);
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self.entries.clearRetainingCapacity();
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}
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fn try_complete_file(self: *Self) project_manager.Error!void {
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self.complete_trigger_count += 1;
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if (self.complete_trigger_count == 1) {
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self.query.clearRetainingCapacity();
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self.match.clearRetainingCapacity();
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self.clear_entries();
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if (root.is_directory(self.file_path.items)) {
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try self.query.appendSlice(self.file_path.items);
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} else if (self.file_path.items.len > 0) blk: {
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const basename_begin = std.mem.lastIndexOfScalar(u8, self.file_path.items, std.fs.path.sep) orelse {
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try self.match.appendSlice(self.file_path.items);
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break :blk;
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};
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try self.query.appendSlice(self.file_path.items[0 .. basename_begin + 1]);
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try self.match.appendSlice(self.file_path.items[basename_begin + 1 ..]);
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}
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// log.logger("file_browser").print("query: '{s}' match: '{s}'", .{ self.query.items, self.match.items });
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try project_manager.request_path_files(max_complete_paths, self.query.items);
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} else {
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try self.do_complete();
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}
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}
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fn reverse_complete_file(self: *Self) error{OutOfMemory}!void {
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if (self.complete_trigger_count < 2) {
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self.complete_trigger_count = 0;
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self.file_path.clearRetainingCapacity();
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if (self.match.items.len > 0) {
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try self.construct_path(self.query.items, .{ .name = self.match.items, .type = .file }, 0);
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} else {
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try self.file_path.appendSlice(self.query.items);
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}
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if (tui.current().mini_mode) |*mini_mode| {
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mini_mode.text = self.file_path.items;
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mini_mode.cursor = self.file_path.items.len;
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}
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return;
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}
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self.complete_trigger_count -= 1;
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try self.do_complete();
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}
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fn receive_path_entry(self: *Self, _: tp.pid_ref, m: tp.message) MessageFilter.Error!bool {
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if (try cbor.match(m.buf, .{ "PRJ", tp.more })) {
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try self.process_project_manager(m);
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return true;
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}
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if (try cbor.match(m.buf, .{ "exit", "error.FileNotFound" })) {
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message("path not found", .{});
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return true;
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}
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return false;
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}
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fn process_project_manager(self: *Self, m: tp.message) MessageFilter.Error!void {
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defer {
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if (tui.current().mini_mode) |*mini_mode| {
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mini_mode.text = self.file_path.items;
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mini_mode.cursor = self.file_path.items.len;
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}
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}
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var count: usize = undefined;
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if (try cbor.match(m.buf, .{ "PRJ", "path_entry", tp.more })) {
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return self.process_path_entry(m);
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} else if (try cbor.match(m.buf, .{ "PRJ", "path_done", tp.any, tp.any, tp.extract(&count) })) {
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try self.do_complete();
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} else {
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log.logger("file_browser").err("receive", tp.unexpected(m));
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}
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}
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fn process_path_entry(self: *Self, m: tp.message) MessageFilter.Error!void {
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var path: []const u8 = undefined;
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var file_name: []const u8 = undefined;
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if (try cbor.match(m.buf, .{ tp.any, tp.any, tp.any, tp.extract(&path), "DIR", tp.extract(&file_name) })) {
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(try self.entries.addOne()).* = .{ .name = try self.allocator.dupe(u8, file_name), .type = .dir };
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} else if (try cbor.match(m.buf, .{ tp.any, tp.any, tp.any, tp.extract(&path), "LINK", tp.extract(&file_name) })) {
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(try self.entries.addOne()).* = .{ .name = try self.allocator.dupe(u8, file_name), .type = .link };
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} else if (try cbor.match(m.buf, .{ tp.any, tp.any, tp.any, tp.extract(&path), "FILE", tp.extract(&file_name) })) {
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(try self.entries.addOne()).* = .{ .name = try self.allocator.dupe(u8, file_name), .type = .file };
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} else {
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log.logger("file_browser").err("receive", tp.unexpected(m));
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}
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tui.need_render();
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}
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fn do_complete(self: *Self) !void {
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self.complete_trigger_count = @min(self.complete_trigger_count, self.entries.items.len);
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self.file_path.clearRetainingCapacity();
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if (self.match.items.len > 0) {
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try self.match_path();
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} else if (self.entries.items.len > 0) {
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try self.construct_path(self.query.items, self.entries.items[self.complete_trigger_count - 1], self.complete_trigger_count - 1);
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} else {
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try self.construct_path(self.query.items, .{ .name = "", .type = .file }, 0);
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}
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message("{d}/{d}", .{ self.matched_entry + 1, self.entries.items.len });
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}
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fn construct_path(self: *Self, path_: []const u8, entry: Entry, entry_no: usize) error{OutOfMemory}!void {
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self.matched_entry = entry_no;
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const path = project_manager.normalize_file_path(path_);
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try self.file_path.appendSlice(path);
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if (path.len > 0 and path[path.len - 1] != std.fs.path.sep)
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try self.file_path.append(std.fs.path.sep);
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try self.file_path.appendSlice(entry.name);
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if (entry.type == .dir)
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try self.file_path.append(std.fs.path.sep);
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}
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fn match_path(self: *Self) !void {
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var matched: usize = 0;
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var last: ?Entry = null;
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var last_no: usize = 0;
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for (self.entries.items, 0..) |entry, i| {
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if (entry.name.len >= self.match.items.len and
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std.mem.eql(u8, self.match.items, entry.name[0..self.match.items.len]))
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{
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matched += 1;
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if (matched == self.complete_trigger_count) {
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try self.construct_path(self.query.items, entry, i);
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return;
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}
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last = entry;
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last_no = i;
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}
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}
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if (last) |entry| {
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try self.construct_path(self.query.items, entry, last_no);
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self.complete_trigger_count = matched;
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} else {
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message("no match for '{s}'", .{self.match.items});
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try self.construct_path(self.query.items, .{ .name = self.match.items, .type = .file }, 0);
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}
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}
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fn delete_to_previous_path_segment(self: *Self) void {
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self.complete_trigger_count = 0;
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if (self.file_path.items.len == 0) return;
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if (self.file_path.items.len == 1) {
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self.file_path.clearRetainingCapacity();
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return;
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}
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const path = if (self.file_path.items[self.file_path.items.len - 1] == std.fs.path.sep)
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self.file_path.items[0 .. self.file_path.items.len - 2]
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else
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self.file_path.items;
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if (std.mem.lastIndexOfScalar(u8, path, std.fs.path.sep)) |pos| {
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self.file_path.items.len = pos + 1;
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} else {
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self.file_path.clearRetainingCapacity();
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}
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}
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fn message(comptime fmt: anytype, args: anytype) void {
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var buf: [256]u8 = undefined;
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tp.self_pid().send(.{ "message", std.fmt.bufPrint(&buf, fmt, args) catch @panic("too large") }) catch {};
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}
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};
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}
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