mirror of
https://github.com/ghostty-org/ghostty.git
synced 2025-07-25 13:16:11 +03:00
980 lines
31 KiB
Zig
980 lines
31 KiB
Zig
//! VT-series parser for escape and control sequences.
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//!
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//! This is implemented directly as the state machine described on
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//! vt100.net: https://vt100.net/emu/dec_ansi_parser
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const Parser = @This();
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const std = @import("std");
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const builtin = @import("builtin");
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const assert = std.debug.assert;
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const testing = std.testing;
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const table = @import("parse_table.zig").table;
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const osc = @import("osc.zig");
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const log = std.log.scoped(.parser);
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/// States for the state machine
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pub const State = enum {
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ground,
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escape,
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escape_intermediate,
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csi_entry,
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csi_intermediate,
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csi_param,
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csi_ignore,
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dcs_entry,
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dcs_param,
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dcs_intermediate,
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dcs_passthrough,
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dcs_ignore,
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osc_string,
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sos_pm_apc_string,
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};
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/// Transition action is an action that can be taken during a state
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/// transition. This is more of an internal action, not one used by
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/// end users, typically.
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pub const TransitionAction = enum {
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none,
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ignore,
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print,
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execute,
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collect,
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param,
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esc_dispatch,
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csi_dispatch,
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put,
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osc_put,
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apc_put,
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};
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/// Action is the action that a caller of the parser is expected to
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/// take as a result of some input character.
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pub const Action = union(enum) {
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pub const Tag = std.meta.FieldEnum(Action);
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/// Draw character to the screen. This is a unicode codepoint.
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print: u21,
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/// Execute the C0 or C1 function.
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execute: u8,
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/// Execute the CSI command. Note that pointers within this
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/// structure are only valid until the next call to "next".
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csi_dispatch: CSI,
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/// Execute the ESC command.
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esc_dispatch: ESC,
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/// Execute the OSC command.
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osc_dispatch: osc.Command,
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/// DCS-related events.
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dcs_hook: DCS,
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dcs_put: u8,
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dcs_unhook: void,
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/// APC data
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apc_start: void,
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apc_put: u8,
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apc_end: void,
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pub const CSI = struct {
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intermediates: []u8,
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params: []u16,
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params_sep: SepList,
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final: u8,
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/// The list of separators used for CSI params. The value of the
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/// bit can be mapped to Sep. The index of this bit set specifies
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/// the separator AFTER that param. For example: 0;4:3 would have
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/// index 1 set.
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pub const SepList = std.StaticBitSet(MAX_PARAMS);
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/// The separator used for CSI params.
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pub const Sep = enum(u1) { semicolon = 0, colon = 1 };
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// Implement formatter for logging
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pub fn format(
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self: CSI,
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comptime layout: []const u8,
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opts: std.fmt.FormatOptions,
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writer: anytype,
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) !void {
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_ = layout;
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_ = opts;
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try std.fmt.format(writer, "ESC [ {s} {any} {c}", .{
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self.intermediates,
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self.params,
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self.final,
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});
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}
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};
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pub const ESC = struct {
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intermediates: []u8,
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final: u8,
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// Implement formatter for logging
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pub fn format(
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self: ESC,
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comptime layout: []const u8,
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opts: std.fmt.FormatOptions,
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writer: anytype,
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) !void {
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_ = layout;
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_ = opts;
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try std.fmt.format(writer, "ESC {s} {c}", .{
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self.intermediates,
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self.final,
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});
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}
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};
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pub const DCS = struct {
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intermediates: []const u8 = "",
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params: []const u16 = &.{},
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final: u8,
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};
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// Implement formatter for logging. This is mostly copied from the
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// std.fmt implementation, but we modify it slightly so that we can
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// print out custom formats for some of our primitives.
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pub fn format(
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self: Action,
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comptime layout: []const u8,
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opts: std.fmt.FormatOptions,
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writer: anytype,
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) !void {
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_ = layout;
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const T = Action;
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const info = @typeInfo(T).@"union";
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try writer.writeAll(@typeName(T));
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if (info.tag_type) |TagType| {
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try writer.writeAll("{ .");
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try writer.writeAll(@tagName(@as(TagType, self)));
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try writer.writeAll(" = ");
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inline for (info.fields) |u_field| {
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// If this is the active field...
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if (self == @field(TagType, u_field.name)) {
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const value = @field(self, u_field.name);
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switch (@TypeOf(value)) {
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// Unicode
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u21 => try std.fmt.format(writer, "'{u}' (U+{X})", .{ value, value }),
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// Byte
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u8 => try std.fmt.format(writer, "0x{x}", .{value}),
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// Note: we don't do ASCII (u8) because there are a lot
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// of invisible characters we don't want to handle right
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// now.
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// All others do the default behavior
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else => try std.fmt.formatType(
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@field(self, u_field.name),
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"any",
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opts,
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writer,
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3,
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),
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}
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}
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}
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try writer.writeAll(" }");
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} else {
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try format(writer, "@{x}", .{@intFromPtr(&self)});
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}
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}
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};
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/// Maximum number of intermediate characters during parsing. This is
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/// 4 because we also use the intermediates array for UTF8 decoding which
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/// can be at most 4 bytes.
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const MAX_INTERMEDIATE = 4;
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/// Maximum number of CSI parameters. This is arbitrary. Practically, the
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/// only CSI command that uses more than 3 parameters is the SGR command
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/// which can be infinitely long. 24 is a reasonable limit based on empirical
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/// data. This used to be 16 but Kakoune has a SGR command that uses 17
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/// parameters.
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///
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/// We could in the future make this the static limit and then allocate after
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/// but that's a lot more work and practically its so rare to exceed this
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/// number. I implore TUI authors to not use more than this number of CSI
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/// params, but I suspect we'll introduce a slow path with heap allocation
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/// one day.
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const MAX_PARAMS = 24;
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/// Current state of the state machine
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state: State = .ground,
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/// Intermediate tracking.
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intermediates: [MAX_INTERMEDIATE]u8 = undefined,
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intermediates_idx: u8 = 0,
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/// Param tracking, building
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params: [MAX_PARAMS]u16 = undefined,
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params_sep: Action.CSI.SepList = .initEmpty(),
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params_idx: u8 = 0,
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param_acc: u16 = 0,
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param_acc_idx: u8 = 0,
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/// Parser for OSC sequences
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osc_parser: osc.Parser = .{},
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pub fn init() Parser {
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return .{};
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}
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pub fn deinit(self: *Parser) void {
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self.osc_parser.deinit();
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}
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/// Next consumes the next character c and returns the actions to execute.
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/// Up to 3 actions may need to be executed -- in order -- representing
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/// the state exit, transition, and entry actions.
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pub fn next(self: *Parser, c: u8) [3]?Action {
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const effect = table[c][@intFromEnum(self.state)];
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// log.info("next: {x}", .{c});
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const next_state = effect.state;
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const action = effect.action;
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// After generating the actions, we set our next state.
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defer self.state = next_state;
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// When going from one state to another, the actions take place in this order:
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//
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// 1. exit action from old state
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// 2. transition action
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// 3. entry action to new state
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return [3]?Action{
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// Exit depends on current state
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if (self.state == next_state) null else switch (self.state) {
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.osc_string => if (self.osc_parser.end(c)) |cmd|
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Action{ .osc_dispatch = cmd }
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else
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null,
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.dcs_passthrough => Action{ .dcs_unhook = {} },
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.sos_pm_apc_string => Action{ .apc_end = {} },
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else => null,
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},
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self.doAction(action, c),
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// Entry depends on new state
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if (self.state == next_state) null else switch (next_state) {
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.escape, .dcs_entry, .csi_entry => clear: {
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self.clear();
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break :clear null;
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},
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.osc_string => osc_string: {
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self.osc_parser.reset();
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break :osc_string null;
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},
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.dcs_passthrough => dcs_hook: {
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// Finalize parameters
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if (self.param_acc_idx > 0) {
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self.params[self.params_idx] = self.param_acc;
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self.params_idx += 1;
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}
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break :dcs_hook .{
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.dcs_hook = .{
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.intermediates = self.intermediates[0..self.intermediates_idx],
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.params = self.params[0..self.params_idx],
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.final = c,
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},
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};
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},
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.sos_pm_apc_string => Action{ .apc_start = {} },
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else => null,
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},
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};
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}
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pub fn collect(self: *Parser, c: u8) void {
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if (self.intermediates_idx >= MAX_INTERMEDIATE) {
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log.warn("invalid intermediates count", .{});
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return;
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}
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self.intermediates[self.intermediates_idx] = c;
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self.intermediates_idx += 1;
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}
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fn doAction(self: *Parser, action: TransitionAction, c: u8) ?Action {
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return switch (action) {
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.none, .ignore => null,
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.print => Action{ .print = c },
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.execute => Action{ .execute = c },
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.collect => collect: {
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self.collect(c);
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break :collect null;
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},
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.param => param: {
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// Semicolon separates parameters. If we encounter a semicolon
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// we need to store and move on to the next parameter.
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if (c == ';' or c == ':') {
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// Ignore too many parameters
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if (self.params_idx >= MAX_PARAMS) break :param null;
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// Set param final value
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self.params[self.params_idx] = self.param_acc;
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if (c == ':') self.params_sep.set(self.params_idx);
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self.params_idx += 1;
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// Reset current param value to 0
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self.param_acc = 0;
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self.param_acc_idx = 0;
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break :param null;
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}
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// A numeric value. Add it to our accumulator.
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if (self.param_acc_idx > 0) {
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self.param_acc *|= 10;
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}
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self.param_acc +|= c - '0';
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// Increment our accumulator index. If we overflow then
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// we're out of bounds and we exit immediately.
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self.param_acc_idx, const overflow = @addWithOverflow(self.param_acc_idx, 1);
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if (overflow > 0) break :param null;
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// The client is expected to perform no action.
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break :param null;
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},
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.osc_put => osc_put: {
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self.osc_parser.next(c);
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break :osc_put null;
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},
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.csi_dispatch => csi_dispatch: {
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// Ignore too many parameters
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if (self.params_idx >= MAX_PARAMS) break :csi_dispatch null;
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// Finalize parameters if we have one
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if (self.param_acc_idx > 0) {
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self.params[self.params_idx] = self.param_acc;
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self.params_idx += 1;
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}
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const result: Action = .{
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.csi_dispatch = .{
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.intermediates = self.intermediates[0..self.intermediates_idx],
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.params = self.params[0..self.params_idx],
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.params_sep = self.params_sep,
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.final = c,
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},
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};
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// We only allow colon or mixed separators for the 'm' command.
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if (c != 'm' and self.params_sep.count() > 0) {
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log.warn(
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"CSI colon or mixed separators only allowed for 'm' command, got: {}",
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.{result},
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);
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break :csi_dispatch null;
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}
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break :csi_dispatch result;
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},
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.esc_dispatch => Action{
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.esc_dispatch = .{
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.intermediates = self.intermediates[0..self.intermediates_idx],
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.final = c,
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},
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},
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.put => Action{ .dcs_put = c },
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.apc_put => Action{ .apc_put = c },
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};
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}
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pub fn clear(self: *Parser) void {
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self.intermediates_idx = 0;
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self.params_idx = 0;
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self.params_sep = .initEmpty();
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self.param_acc = 0;
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self.param_acc_idx = 0;
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}
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test {
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var p = init();
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_ = p.next(0x9E);
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try testing.expect(p.state == .sos_pm_apc_string);
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_ = p.next(0x9C);
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try testing.expect(p.state == .ground);
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{
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const a = p.next('a');
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .print);
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try testing.expect(a[2] == null);
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}
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{
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const a = p.next(0x19);
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .execute);
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try testing.expect(a[2] == null);
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}
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}
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test "esc: ESC ( B" {
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var p = init();
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_ = p.next(0x1B);
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_ = p.next('(');
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{
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const a = p.next('B');
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .esc_dispatch);
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try testing.expect(a[2] == null);
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const d = a[1].?.esc_dispatch;
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try testing.expect(d.final == 'B');
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try testing.expect(d.intermediates.len == 1);
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try testing.expect(d.intermediates[0] == '(');
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}
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}
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test "csi: ESC [ H" {
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var p = init();
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_ = p.next(0x1B);
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_ = p.next(0x5B);
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{
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const a = p.next(0x48);
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .csi_dispatch);
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try testing.expect(a[2] == null);
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const d = a[1].?.csi_dispatch;
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try testing.expect(d.final == 0x48);
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try testing.expect(d.params.len == 0);
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}
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}
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test "csi: ESC [ 1 ; 4 H" {
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var p = init();
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_ = p.next(0x1B);
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_ = p.next(0x5B);
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_ = p.next(0x31); // 1
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_ = p.next(0x3B); // ;
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_ = p.next(0x34); // 4
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{
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const a = p.next(0x48); // H
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .csi_dispatch);
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try testing.expect(a[2] == null);
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const d = a[1].?.csi_dispatch;
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try testing.expect(d.final == 'H');
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try testing.expect(d.params.len == 2);
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try testing.expectEqual(@as(u16, 1), d.params[0]);
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try testing.expectEqual(@as(u16, 4), d.params[1]);
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}
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}
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test "csi: SGR ESC [ 38 : 2 m" {
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var p = init();
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_ = p.next(0x1B);
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_ = p.next('[');
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_ = p.next('3');
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_ = p.next('8');
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_ = p.next(':');
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_ = p.next('2');
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{
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const a = p.next('m');
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .csi_dispatch);
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try testing.expect(a[2] == null);
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const d = a[1].?.csi_dispatch;
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try testing.expect(d.final == 'm');
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try testing.expect(d.params.len == 2);
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try testing.expectEqual(@as(u16, 38), d.params[0]);
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try testing.expect(d.params_sep.isSet(0));
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try testing.expectEqual(@as(u16, 2), d.params[1]);
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try testing.expect(!d.params_sep.isSet(1));
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}
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}
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test "csi: SGR colon followed by semicolon" {
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var p = init();
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_ = p.next(0x1B);
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for ("[48:2") |c| {
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const a = p.next(c);
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try testing.expect(a[0] == null);
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try testing.expect(a[1] == null);
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try testing.expect(a[2] == null);
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}
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{
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const a = p.next('m');
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try testing.expect(p.state == .ground);
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try testing.expect(a[0] == null);
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try testing.expect(a[1].? == .csi_dispatch);
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try testing.expect(a[2] == null);
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}
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_ = p.next(0x1B);
|
|
_ = p.next('[');
|
|
{
|
|
const a = p.next('H');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
}
|
|
|
|
test "csi: SGR mixed colon and semicolon" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[38:5:1;48:5:0") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('m');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
}
|
|
|
|
test "csi: SGR ESC [ 48 : 2 m" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[48:2:240:143:104") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('m');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'm');
|
|
try testing.expect(d.params.len == 5);
|
|
try testing.expectEqual(@as(u16, 48), d.params[0]);
|
|
try testing.expect(d.params_sep.isSet(0));
|
|
try testing.expectEqual(@as(u16, 2), d.params[1]);
|
|
try testing.expect(d.params_sep.isSet(1));
|
|
try testing.expectEqual(@as(u16, 240), d.params[2]);
|
|
try testing.expect(d.params_sep.isSet(2));
|
|
try testing.expectEqual(@as(u16, 143), d.params[3]);
|
|
try testing.expect(d.params_sep.isSet(3));
|
|
try testing.expectEqual(@as(u16, 104), d.params[4]);
|
|
try testing.expect(!d.params_sep.isSet(4));
|
|
}
|
|
}
|
|
|
|
test "csi: SGR ESC [4:3m colon" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
_ = p.next('[');
|
|
_ = p.next('4');
|
|
_ = p.next(':');
|
|
_ = p.next('3');
|
|
|
|
{
|
|
const a = p.next('m');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'm');
|
|
try testing.expect(d.params.len == 2);
|
|
try testing.expectEqual(@as(u16, 4), d.params[0]);
|
|
try testing.expect(d.params_sep.isSet(0));
|
|
try testing.expectEqual(@as(u16, 3), d.params[1]);
|
|
try testing.expect(!d.params_sep.isSet(1));
|
|
}
|
|
}
|
|
|
|
test "csi: SGR with many blank and colon" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[58:2::240:143:104") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('m');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'm');
|
|
try testing.expect(d.params.len == 6);
|
|
try testing.expectEqual(@as(u16, 58), d.params[0]);
|
|
try testing.expect(d.params_sep.isSet(0));
|
|
try testing.expectEqual(@as(u16, 2), d.params[1]);
|
|
try testing.expect(d.params_sep.isSet(1));
|
|
try testing.expectEqual(@as(u16, 0), d.params[2]);
|
|
try testing.expect(d.params_sep.isSet(2));
|
|
try testing.expectEqual(@as(u16, 240), d.params[3]);
|
|
try testing.expect(d.params_sep.isSet(3));
|
|
try testing.expectEqual(@as(u16, 143), d.params[4]);
|
|
try testing.expect(d.params_sep.isSet(4));
|
|
try testing.expectEqual(@as(u16, 104), d.params[5]);
|
|
try testing.expect(!d.params_sep.isSet(5));
|
|
}
|
|
}
|
|
|
|
// This is from a Kakoune actual SGR sequence.
|
|
test "csi: SGR mixed colon and semicolon with blank" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[;4:3;38;2;175;175;215;58:2::190:80:70") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('m');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'm');
|
|
try testing.expectEqual(14, d.params.len);
|
|
try testing.expectEqual(@as(u16, 0), d.params[0]);
|
|
try testing.expect(!d.params_sep.isSet(0));
|
|
try testing.expectEqual(@as(u16, 4), d.params[1]);
|
|
try testing.expect(d.params_sep.isSet(1));
|
|
try testing.expectEqual(@as(u16, 3), d.params[2]);
|
|
try testing.expect(!d.params_sep.isSet(2));
|
|
try testing.expectEqual(@as(u16, 38), d.params[3]);
|
|
try testing.expect(!d.params_sep.isSet(3));
|
|
try testing.expectEqual(@as(u16, 2), d.params[4]);
|
|
try testing.expect(!d.params_sep.isSet(4));
|
|
try testing.expectEqual(@as(u16, 175), d.params[5]);
|
|
try testing.expect(!d.params_sep.isSet(5));
|
|
try testing.expectEqual(@as(u16, 175), d.params[6]);
|
|
try testing.expect(!d.params_sep.isSet(6));
|
|
try testing.expectEqual(@as(u16, 215), d.params[7]);
|
|
try testing.expect(!d.params_sep.isSet(7));
|
|
try testing.expectEqual(@as(u16, 58), d.params[8]);
|
|
try testing.expect(d.params_sep.isSet(8));
|
|
try testing.expectEqual(@as(u16, 2), d.params[9]);
|
|
try testing.expect(d.params_sep.isSet(9));
|
|
try testing.expectEqual(@as(u16, 0), d.params[10]);
|
|
try testing.expect(d.params_sep.isSet(10));
|
|
try testing.expectEqual(@as(u16, 190), d.params[11]);
|
|
try testing.expect(d.params_sep.isSet(11));
|
|
try testing.expectEqual(@as(u16, 80), d.params[12]);
|
|
try testing.expect(d.params_sep.isSet(12));
|
|
try testing.expectEqual(@as(u16, 70), d.params[13]);
|
|
try testing.expect(!d.params_sep.isSet(13));
|
|
}
|
|
}
|
|
|
|
// This is from a Kakoune actual SGR sequence also.
|
|
test "csi: SGR mixed colon and semicolon setting underline, bg, fg" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[4:3;38;2;51;51;51;48;2;170;170;170;58;2;255;97;136") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('m');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'm');
|
|
try testing.expectEqual(17, d.params.len);
|
|
try testing.expectEqual(@as(u16, 4), d.params[0]);
|
|
try testing.expect(d.params_sep.isSet(0));
|
|
try testing.expectEqual(@as(u16, 3), d.params[1]);
|
|
try testing.expect(!d.params_sep.isSet(1));
|
|
try testing.expectEqual(@as(u16, 38), d.params[2]);
|
|
try testing.expect(!d.params_sep.isSet(2));
|
|
try testing.expectEqual(@as(u16, 2), d.params[3]);
|
|
try testing.expect(!d.params_sep.isSet(3));
|
|
try testing.expectEqual(@as(u16, 51), d.params[4]);
|
|
try testing.expect(!d.params_sep.isSet(4));
|
|
try testing.expectEqual(@as(u16, 51), d.params[5]);
|
|
try testing.expect(!d.params_sep.isSet(5));
|
|
try testing.expectEqual(@as(u16, 51), d.params[6]);
|
|
try testing.expect(!d.params_sep.isSet(6));
|
|
try testing.expectEqual(@as(u16, 48), d.params[7]);
|
|
try testing.expect(!d.params_sep.isSet(7));
|
|
try testing.expectEqual(@as(u16, 2), d.params[8]);
|
|
try testing.expect(!d.params_sep.isSet(8));
|
|
try testing.expectEqual(@as(u16, 170), d.params[9]);
|
|
try testing.expect(!d.params_sep.isSet(9));
|
|
try testing.expectEqual(@as(u16, 170), d.params[10]);
|
|
try testing.expect(!d.params_sep.isSet(10));
|
|
try testing.expectEqual(@as(u16, 170), d.params[11]);
|
|
try testing.expect(!d.params_sep.isSet(11));
|
|
try testing.expectEqual(@as(u16, 58), d.params[12]);
|
|
try testing.expect(!d.params_sep.isSet(12));
|
|
try testing.expectEqual(@as(u16, 2), d.params[13]);
|
|
try testing.expect(!d.params_sep.isSet(13));
|
|
try testing.expectEqual(@as(u16, 255), d.params[14]);
|
|
try testing.expect(!d.params_sep.isSet(14));
|
|
try testing.expectEqual(@as(u16, 97), d.params[15]);
|
|
try testing.expect(!d.params_sep.isSet(15));
|
|
try testing.expectEqual(@as(u16, 136), d.params[16]);
|
|
try testing.expect(!d.params_sep.isSet(16));
|
|
}
|
|
}
|
|
|
|
test "csi: colon for non-m final" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[38:2h") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
try testing.expect(p.state == .ground);
|
|
}
|
|
|
|
test "csi: request mode decrqm" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[?2026$") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('p');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'p');
|
|
try testing.expectEqual(@as(usize, 2), d.intermediates.len);
|
|
try testing.expectEqual(@as(usize, 1), d.params.len);
|
|
try testing.expectEqual(@as(u16, '?'), d.intermediates[0]);
|
|
try testing.expectEqual(@as(u16, '$'), d.intermediates[1]);
|
|
try testing.expectEqual(@as(u16, 2026), d.params[0]);
|
|
}
|
|
}
|
|
|
|
test "csi: change cursor" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("[3 ") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('q');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1].? == .csi_dispatch);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const d = a[1].?.csi_dispatch;
|
|
try testing.expect(d.final == 'q');
|
|
try testing.expectEqual(@as(usize, 1), d.intermediates.len);
|
|
try testing.expectEqual(@as(usize, 1), d.params.len);
|
|
try testing.expectEqual(@as(u16, ' '), d.intermediates[0]);
|
|
try testing.expectEqual(@as(u16, 3), d.params[0]);
|
|
}
|
|
}
|
|
|
|
test "osc: change window title" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
_ = p.next(']');
|
|
_ = p.next('0');
|
|
_ = p.next(';');
|
|
_ = p.next('a');
|
|
_ = p.next('b');
|
|
_ = p.next('c');
|
|
|
|
{
|
|
const a = p.next(0x07); // BEL
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0].? == .osc_dispatch);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const cmd = a[0].?.osc_dispatch;
|
|
try testing.expect(cmd == .change_window_title);
|
|
try testing.expectEqualStrings("abc", cmd.change_window_title);
|
|
}
|
|
}
|
|
|
|
test "osc: change window title (end in esc)" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
_ = p.next(']');
|
|
_ = p.next('0');
|
|
_ = p.next(';');
|
|
_ = p.next('a');
|
|
_ = p.next('b');
|
|
_ = p.next('c');
|
|
|
|
{
|
|
const a = p.next(0x1B);
|
|
_ = p.next('\\');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0].? == .osc_dispatch);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const cmd = a[0].?.osc_dispatch;
|
|
try testing.expect(cmd == .change_window_title);
|
|
try testing.expectEqualStrings("abc", cmd.change_window_title);
|
|
}
|
|
}
|
|
|
|
// https://github.com/darrenstarr/VtNetCore/pull/14
|
|
// Saw this on HN, decided to add a test case because why not.
|
|
test "osc: 112 incomplete sequence" {
|
|
var p: Parser = init();
|
|
defer p.deinit();
|
|
p.osc_parser.alloc = std.testing.allocator;
|
|
|
|
_ = p.next(0x1B);
|
|
_ = p.next(']');
|
|
_ = p.next('1');
|
|
_ = p.next('1');
|
|
_ = p.next('2');
|
|
|
|
{
|
|
const a = p.next(0x07);
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0].? == .osc_dispatch);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
|
|
const cmd = a[0].?.osc_dispatch;
|
|
try testing.expect(cmd == .color_operation);
|
|
try testing.expectEqual(cmd.color_operation.terminator, .bel);
|
|
try testing.expect(cmd.color_operation.source == .reset_cursor);
|
|
try testing.expect(cmd.color_operation.operations.count() == 1);
|
|
var it = cmd.color_operation.operations.constIterator(0);
|
|
{
|
|
const op = it.next().?;
|
|
try testing.expect(op.* == .reset);
|
|
try testing.expectEqual(
|
|
osc.Command.ColorOperation.Kind.cursor,
|
|
op.reset,
|
|
);
|
|
}
|
|
try std.testing.expect(it.next() == null);
|
|
}
|
|
}
|
|
|
|
test "csi: too many params" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
_ = p.next('[');
|
|
for (0..100) |_| {
|
|
_ = p.next('1');
|
|
_ = p.next(';');
|
|
}
|
|
_ = p.next('1');
|
|
|
|
{
|
|
const a = p.next('C');
|
|
try testing.expect(p.state == .ground);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
}
|
|
|
|
test "dcs: XTGETTCAP" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("P+") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('q');
|
|
try testing.expect(p.state == .dcs_passthrough);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2].? == .dcs_hook);
|
|
|
|
const hook = a[2].?.dcs_hook;
|
|
try testing.expectEqualSlices(u8, &[_]u8{'+'}, hook.intermediates);
|
|
try testing.expectEqualSlices(u16, &[_]u16{}, hook.params);
|
|
try testing.expectEqual('q', hook.final);
|
|
}
|
|
}
|
|
|
|
test "dcs: params" {
|
|
var p = init();
|
|
_ = p.next(0x1B);
|
|
for ("P1000") |c| {
|
|
const a = p.next(c);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2] == null);
|
|
}
|
|
|
|
{
|
|
const a = p.next('p');
|
|
try testing.expect(p.state == .dcs_passthrough);
|
|
try testing.expect(a[0] == null);
|
|
try testing.expect(a[1] == null);
|
|
try testing.expect(a[2].? == .dcs_hook);
|
|
|
|
const hook = a[2].?.dcs_hook;
|
|
try testing.expectEqualSlices(u16, &[_]u16{1000}, hook.params);
|
|
try testing.expectEqual('p', hook.final);
|
|
}
|
|
}
|