refactor: move_to_char mini mode into a reusable get_char mini mode

src/keybind/builtin/flow.json

@@ -437,7 +437,7 @@
             ["backspace", "mini_mode_delete_backwards"]
         ]
     },
-    "mini/move_to_char": {
+    "mini/get_char": {
         "press": [
             ["ctrl+g", "mini_mode_cancel"],
             ["ctrl+c", "mini_mode_cancel"],

src/tui/mode/mini/get_char.zig

@@ -0,0 +1,92 @@
+const std = @import("std");
+const tp = @import("thespian");
+
+const input = @import("input");
+const key = @import("renderer").input.key;
+const mod = @import("renderer").input.modifier;
+const event_type = @import("renderer").input.event_type;
+const keybind = @import("keybind");
+const command = @import("command");
+const EventHandler = @import("EventHandler");
+
+const tui = @import("../../tui.zig");
+
+const Allocator = @import("std").mem.Allocator;
+const fmt = @import("std").fmt;
+
+pub fn Create(options: type) type {
+    return struct {
+        const Self = @This();
+
+        const Commands = command.Collection(cmds);
+
+        const ValueType = if (@hasDecl(options, "ValueType")) options.ValueType else void;
+
+        allocator: Allocator,
+        input: ?ValueType = null,
+        value: ValueType,
+        ctx: command.Context,
+        commands: Commands = undefined,
+
+        pub fn create(allocator: Allocator, ctx: command.Context) !struct { tui.Mode, tui.MiniMode } {
+            const self = try allocator.create(Self);
+            errdefer allocator.destroy(self);
+            self.* = .{
+                .allocator = allocator,
+                .ctx = .{ .args = try ctx.args.clone(allocator) },
+                .value = options.start(self),
+            };
+            try self.commands.init(self);
+            var mode = try keybind.mode("mini/get_char", allocator, .{
+                .insert_command = "mini_mode_insert_bytes",
+            });
+            mode.event_handler = EventHandler.to_owned(self);
+            return .{ mode, .{ .name = options.name(self) } };
+        }
+
+        pub fn deinit(self: *Self) void {
+            if (@hasDecl(options, "deinit"))
+                options.deinit(self);
+            self.allocator.free(self.ctx.args.buf);
+            self.commands.deinit();
+            self.allocator.destroy(self);
+        }
+
+        pub fn receive(_: *Self, _: tp.pid_ref, _: tp.message) error{Exit}!bool {
+            return false;
+        }
+
+        const cmds = struct {
+            pub const Target = Self;
+            const Ctx = command.Context;
+            const Meta = command.Metadata;
+            const Result = command.Result;
+
+            pub fn mini_mode_insert_code_point(self: *Self, ctx: Ctx) Result {
+                var code_point: u32 = 0;
+                if (!try ctx.args.match(.{tp.extract(&code_point)}))
+                    return error.InvalidMoveToCharInsertCodePointArgument;
+                var buf: [6]u8 = undefined;
+                const bytes = input.ucs32_to_utf8(&[_]u32{code_point}, &buf) catch return error.InvalidMoveToCharCodePoint;
+                return options.process_egc(self, buf[0..bytes]);
+            }
+            pub const mini_mode_insert_code_point_meta: Meta = .{ .arguments = &.{.integer} };
+
+            pub fn mini_mode_insert_bytes(self: *Self, ctx: Ctx) Result {
+                var bytes: []const u8 = undefined;
+                if (!try ctx.args.match(.{tp.extract(&bytes)}))
+                    return error.InvalidMoveToCharInsertBytesArgument;
+                const egc = tui.egc_last(bytes);
+                var buf: [6]u8 = undefined;
+                @memcpy(buf[0..egc.len], egc);
+                return options.process_egc(self, buf[0..egc.len]);
+            }
+            pub const mini_mode_insert_bytes_meta: Meta = .{ .arguments = &.{.string} };
+
+            pub fn mini_mode_cancel(_: *Self, _: Ctx) Result {
+                command.executeName("exit_mini_mode", .{}) catch {};
+            }
+            pub const mini_mode_cancel_meta: Meta = .{ .description = "Cancel input" };
+        };
+    };
+}