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terminal: kitty parser get a little clever, keys are always a char

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This commit is contained in:
Mitchell Hashimoto
2023-08-20 09:50:28 -07:00
parent bffbc626fc
commit a07cfbb1e0
1 changed files with 169 additions and 149 deletions
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318
src/terminal/kitty/graphics.zig
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@ -7,7 +7,13 @@ const std = @import("std");
const Allocator = std.mem.Allocator; const Allocator = std.mem.Allocator;
const ArenaAllocator = std.heap.ArenaAllocator; const ArenaAllocator = std.heap.ArenaAllocator;
const KV = std.StringHashMapUnmanaged([]const u8); /// The key-value pairs for the control information for a command. The
/// keys are always single characters and the values are either single
/// characters or 32-bit unsigned integers.
///
/// For the value of this: if the value is a single printable ASCII character
/// it is the ASCII code. Otherwise, it is parsed as a 32-bit unsigned integer.
const KV = std.AutoHashMapUnmanaged(u8, u32);
/// Command parser parses the Kitty graphics protocol escape sequence. /// Command parser parses the Kitty graphics protocol escape sequence.
pub const CommandParser = struct { pub const CommandParser = struct {
@ -18,13 +24,21 @@ pub const CommandParser = struct {
/// This is the list of KV pairs that we're building up. /// This is the list of KV pairs that we're building up.
kv: KV = .{}, kv: KV = .{},
/// This is used as a buffer to store the key/value of a KV pair.
/// The value of a KV pair is at most a 32-bit integer which at most
/// is 10 characters (4294967295).
kv_temp: [10]u8 = undefined,
kv_temp_len: u4 = 0,
/// Current kv key
kv_current: u8 = 0,
/// This is the list of bytes that contains both KV data and final /// This is the list of bytes that contains both KV data and final
/// data. You shouldn't access this directly. /// data. You shouldn't access this directly.
data: std.ArrayListUnmanaged(u8) = .{}, data: std.ArrayListUnmanaged(u8) = .{},
/// Internal state for parsing. /// Internal state for parsing.
data_i: usize = 0, data_i: usize = 0,
value_ptr: *[]const u8 = undefined,
state: State = .control_key, state: State = .control_key,
const State = enum { const State = enum {
@ -63,20 +77,14 @@ pub const CommandParser = struct {
.control_key => switch (c) { .control_key => switch (c) {
// '=' means the key is complete and we're moving to the value. // '=' means the key is complete and we're moving to the value.
'=' => { '=' => {
// We need to copy the key into the arena so that the // All keys at the time of writing this parser are one char
// pointer is stable. if (self.kv_temp_len != 1) @panic("TODO");
const alloc = self.arena.allocator(); self.kv_current = self.kv_temp[0];
const gop = try self.kv.getOrPut(alloc, try alloc.dupe( self.kv_temp_len = 0;
u8,
self.data.items[self.data_i..],
));
self.state = .control_value; self.state = .control_value;
self.value_ptr = gop.value_ptr;
self.data_i = self.data.items.len;
}, },
else => try self.data.append(self.arena.allocator(), c), else => try self.accumulateValue(c),
}, },
.control_value => switch (c) { .control_value => switch (c) {
@ -92,7 +100,7 @@ pub const CommandParser = struct {
self.state = .data; self.state = .data;
}, },
else => try self.data.append(self.arena.allocator(), c), else => try self.accumulateValue(c),
}, },
.data => try self.data.append(self.arena.allocator(), c), .data => try self.data.append(self.arena.allocator(), c),
@ -123,9 +131,9 @@ pub const CommandParser = struct {
// Determine our action, which is always a single character. // Determine our action, which is always a single character.
const action: u8 = action: { const action: u8 = action: {
const str = self.kv.get("a") orelse break :action 't'; const value = self.kv.get('a') orelse break :action 't';
if (str.len != 1) return error.InvalidFormat; const c = std.math.cast(u8, value) orelse return error.InvalidFormat;
break :action str[0]; break :action c;
}; };
const control: Command.Control = switch (action) { const control: Command.Control = switch (action) {
'q' => .{ .query = try Transmission.parse(self.kv) }, 'q' => .{ .query = try Transmission.parse(self.kv) },
@ -143,8 +151,8 @@ pub const CommandParser = struct {
}; };
// Determine our quiet value // Determine our quiet value
const quiet: Command.Quiet = if (self.kv.get("q")) |str| quiet: { const quiet: Command.Quiet = if (self.kv.get('q')) |v| quiet: {
break :quiet switch (try std.fmt.parseInt(u32, str, 10)) { break :quiet switch (v) {
0 => .no, 0 => .no,
1 => .ok, 1 => .ok,
2 => .failures, 2 => .failures,
@ -164,12 +172,31 @@ pub const CommandParser = struct {
}; };
} }
fn accumulateValue(self: *CommandParser, c: u8) !void {
self.kv_temp[self.kv_temp_len] = c;
self.kv_temp_len += 1;
if (self.kv_temp_len > self.kv_temp.len) @panic("TODO");
}
fn finishValue(self: *CommandParser) !void { fn finishValue(self: *CommandParser) !void {
self.value_ptr.* = try self.arena.allocator().dupe( const alloc = self.arena.allocator();
u8,
self.data.items[self.data_i..self.data.items.len], // Check for ASCII chars first
); if (self.kv_temp_len == 1) {
self.data_i = self.data.items.len; const c = self.kv_temp[0];
if (c < '0' or c > '9') {
try self.kv.put(alloc, self.kv_current, @intCast(c));
self.kv_temp_len = 0;
return;
}
}
// Parse the value as a string
const v = try std.fmt.parseInt(u32, self.kv_temp[0..self.kv_temp_len], 10);
try self.kv.put(alloc, self.kv_current, v);
// Clear our temp buffer
self.kv_temp_len = 0;
} }
}; };
@ -247,8 +274,7 @@ pub const Transmission = struct {
fn parse(kv: KV) !Transmission { fn parse(kv: KV) !Transmission {
var result: Transmission = .{}; var result: Transmission = .{};
if (kv.get("f")) |str| { if (kv.get('f')) |v| {
const v = try std.fmt.parseInt(u32, str, 10);
result.format = switch (v) { result.format = switch (v) {
24 => .rgb, 24 => .rgb,
32 => .rgba, 32 => .rgba,
@ -257,9 +283,9 @@ pub const Transmission = struct {
}; };
} }
if (kv.get("t")) |str| { if (kv.get('t')) |v| {
if (str.len != 1) return error.InvalidFormat; const c = std.math.cast(u8, v) orelse return error.InvalidFormat;
result.medium = switch (str[0]) { result.medium = switch (c) {
'd' => .direct, 'd' => .direct,
'f' => .file, 'f' => .file,
't' => .temporary_file, 't' => .temporary_file,
@ -268,44 +294,43 @@ pub const Transmission = struct {
}; };
} }
if (kv.get("s")) |str| { if (kv.get('s')) |v| {
result.width = try std.fmt.parseInt(u32, str, 10); result.width = v;
} }
if (kv.get("v")) |str| { if (kv.get('v')) |v| {
result.height = try std.fmt.parseInt(u32, str, 10); result.height = v;
} }
if (kv.get("S")) |str| { if (kv.get('S')) |v| {
result.size = try std.fmt.parseInt(u32, str, 10); result.size = v;
} }
if (kv.get("O")) |str| { if (kv.get('O')) |v| {
result.offset = try std.fmt.parseInt(u32, str, 10); result.offset = v;
} }
if (kv.get("i")) |str| { if (kv.get('i')) |v| {
result.image_id = try std.fmt.parseInt(u32, str, 10); result.image_id = v;
} }
if (kv.get("I")) |str| { if (kv.get('I')) |v| {
result.image_number = try std.fmt.parseInt(u32, str, 10); result.image_number = v;
} }
if (kv.get("p")) |str| { if (kv.get('p')) |v| {
result.placement_id = try std.fmt.parseInt(u32, str, 10); result.placement_id = v;
} }
if (kv.get("o")) |str| { if (kv.get('o')) |v| {
if (str.len != 1) return error.InvalidFormat; const c = std.math.cast(u8, v) orelse return error.InvalidFormat;
result.compression = switch (str[0]) { result.compression = switch (c) {
'z' => .zlib_deflate, 'z' => .zlib_deflate,
else => return error.InvalidFormat, else => return error.InvalidFormat,
}; };
} }
if (kv.get("m")) |str| { if (kv.get('m')) |v| {
const v = try std.fmt.parseInt(u32, str, 10);
result.more_chunks = v > 0; result.more_chunks = v > 0;
} }
@ -336,66 +361,64 @@ pub const Display = struct {
fn parse(kv: KV) !Display { fn parse(kv: KV) !Display {
var result: Display = .{}; var result: Display = .{};
if (kv.get("i")) |str| { if (kv.get('i')) |v| {
result.image_id = try std.fmt.parseInt(u32, str, 10); result.image_id = v;
} }
if (kv.get("I")) |str| { if (kv.get('I')) |v| {
result.image_number = try std.fmt.parseInt(u32, str, 10); result.image_number = v;
} }
if (kv.get("x")) |str| { if (kv.get('x')) |v| {
result.x = try std.fmt.parseInt(u32, str, 10); result.x = v;
} }
if (kv.get("y")) |str| { if (kv.get('y')) |v| {
result.y = try std.fmt.parseInt(u32, str, 10); result.y = v;
} }
if (kv.get("w")) |str| { if (kv.get('w')) |v| {
result.width = try std.fmt.parseInt(u32, str, 10); result.width = v;
} }
if (kv.get("h")) |str| { if (kv.get('h')) |v| {
result.height = try std.fmt.parseInt(u32, str, 10); result.height = v;
} }
if (kv.get("X")) |str| { if (kv.get('X')) |v| {
result.x_offset = try std.fmt.parseInt(u32, str, 10); result.x_offset = v;
} }
if (kv.get("Y")) |str| { if (kv.get('Y')) |v| {
result.y_offset = try std.fmt.parseInt(u32, str, 10); result.y_offset = v;
} }
if (kv.get("c")) |str| { if (kv.get('c')) |v| {
result.columns = try std.fmt.parseInt(u32, str, 10); result.columns = v;
} }
if (kv.get("r")) |str| { if (kv.get('r')) |v| {
result.rows = try std.fmt.parseInt(u32, str, 10); result.rows = v;
} }
if (kv.get("C")) |str| { if (kv.get('C')) |v| {
if (str.len != 1) return error.InvalidFormat; result.cursor_movement = switch (v) {
result.cursor_movement = switch (str[0]) { 0 => .after,
'0' => .after, 1 => .none,
'1' => .none,
else => return error.InvalidFormat, else => return error.InvalidFormat,
}; };
} }
if (kv.get("U")) |str| { if (kv.get('U')) |v| {
if (str.len != 1) return error.InvalidFormat; result.virtual_placement = switch (v) {
result.virtual_placement = switch (str[0]) { 0 => false,
'0' => false, 1 => true,
'1' => true,
else => return error.InvalidFormat, else => return error.InvalidFormat,
}; };
} }
if (kv.get("z")) |str| { if (kv.get('z')) |v| {
result.z = try std.fmt.parseInt(u32, str, 10); result.z = v;
} }
return result; return result;
@ -421,28 +444,27 @@ pub const AnimationFrameLoading = struct {
fn parse(kv: KV) !AnimationFrameLoading { fn parse(kv: KV) !AnimationFrameLoading {
var result: AnimationFrameLoading = .{}; var result: AnimationFrameLoading = .{};
if (kv.get("x")) |str| { if (kv.get('x')) |v| {
result.x = try std.fmt.parseInt(u32, str, 10); result.x = v;
} }
if (kv.get("y")) |str| { if (kv.get('y')) |v| {
result.y = try std.fmt.parseInt(u32, str, 10); result.y = v;
} }
if (kv.get("c")) |str| { if (kv.get('c')) |v| {
result.create_frame = try std.fmt.parseInt(u32, str, 10); result.create_frame = v;
} }
if (kv.get("r")) |str| { if (kv.get('r')) |v| {
result.edit_frame = try std.fmt.parseInt(u32, str, 10); result.edit_frame = v;
} }
if (kv.get("z")) |str| { if (kv.get('z')) |v| {
result.gap_ms = try std.fmt.parseInt(u32, str, 10); result.gap_ms = v;
} }
if (kv.get("X")) |str| { if (kv.get('X')) |v| {
const v = try std.fmt.parseInt(u32, str, 10);
result.composition_mode = switch (v) { result.composition_mode = switch (v) {
0 => .alpha_blend, 0 => .alpha_blend,
1 => .overwrite, 1 => .overwrite,
@ -450,8 +472,8 @@ pub const AnimationFrameLoading = struct {
}; };
} }
if (kv.get("Y")) |str| { if (kv.get('Y')) |v| {
result.background = @bitCast(try std.fmt.parseInt(u32, str, 10)); result.background = @bitCast(v);
} }
return result; return result;
@ -472,40 +494,39 @@ pub const AnimationFrameComposition = struct {
fn parse(kv: KV) !AnimationFrameComposition { fn parse(kv: KV) !AnimationFrameComposition {
var result: AnimationFrameComposition = .{}; var result: AnimationFrameComposition = .{};
if (kv.get("c")) |str| { if (kv.get('c')) |v| {
result.frame = try std.fmt.parseInt(u32, str, 10); result.frame = v;
} }
if (kv.get("r")) |str| { if (kv.get('r')) |v| {
result.edit_frame = try std.fmt.parseInt(u32, str, 10); result.edit_frame = v;
} }
if (kv.get("x")) |str| { if (kv.get('x')) |v| {
result.x = try std.fmt.parseInt(u32, str, 10); result.x = v;
} }
if (kv.get("y")) |str| { if (kv.get('y')) |v| {
result.y = try std.fmt.parseInt(u32, str, 10); result.y = v;
} }
if (kv.get("w")) |str| { if (kv.get('w')) |v| {
result.width = try std.fmt.parseInt(u32, str, 10); result.width = v;
} }
if (kv.get("h")) |str| { if (kv.get('h')) |v| {
result.height = try std.fmt.parseInt(u32, str, 10); result.height = v;
} }
if (kv.get("X")) |str| { if (kv.get('X')) |v| {
result.left_edge = try std.fmt.parseInt(u32, str, 10); result.left_edge = v;
} }
if (kv.get("Y")) |str| { if (kv.get('Y')) |v| {
result.top_edge = try std.fmt.parseInt(u32, str, 10); result.top_edge = v;
} }
if (kv.get("C")) |str| { if (kv.get('C')) |v| {
const v = try std.fmt.parseInt(u32, str, 10);
result.composition_mode = switch (v) { result.composition_mode = switch (v) {
0 => .alpha_blend, 0 => .alpha_blend,
1 => .overwrite, 1 => .overwrite,
@ -534,8 +555,7 @@ pub const AnimationControl = struct {
fn parse(kv: KV) !AnimationControl { fn parse(kv: KV) !AnimationControl {
var result: AnimationControl = .{}; var result: AnimationControl = .{};
if (kv.get("s")) |str| { if (kv.get('s')) |v| {
const v = try std.fmt.parseInt(u32, str, 10);
result.action = switch (v) { result.action = switch (v) {
0 => .invalid, 0 => .invalid,
1 => .stop, 1 => .stop,
@ -545,20 +565,20 @@ pub const AnimationControl = struct {
}; };
} }
if (kv.get("r")) |str| { if (kv.get('r')) |v| {
result.frame = try std.fmt.parseInt(u32, str, 10); result.frame = v;
} }
if (kv.get("z")) |str| { if (kv.get('z')) |v| {
result.gap_ms = try std.fmt.parseInt(u32, str, 10); result.gap_ms = v;
} }
if (kv.get("c")) |str| { if (kv.get('c')) |v| {
result.current_frame = try std.fmt.parseInt(u32, str, 10); result.current_frame = v;
} }
if (kv.get("v")) |str| { if (kv.get('v')) |v| {
result.loops = try std.fmt.parseInt(u32, str, 10); result.loops = v;
} }
return result; return result;
@ -624,9 +644,9 @@ pub const Delete = union(enum) {
fn parse(kv: KV) !Delete { fn parse(kv: KV) !Delete {
const what: u8 = what: { const what: u8 = what: {
const str = kv.get("d") orelse break :what 'a'; const value = kv.get('d') orelse break :what 'a';
if (str.len != 1) return error.InvalidFormat; const c = std.math.cast(u8, value) orelse return error.InvalidFormat;
break :what str[0]; break :what c;
}; };
return switch (what) { return switch (what) {
@ -634,11 +654,11 @@ pub const Delete = union(enum) {
'i', 'I' => blk: { 'i', 'I' => blk: {
var result: Delete = .{ .id = .{ .delete = what == 'I' } }; var result: Delete = .{ .id = .{ .delete = what == 'I' } };
if (kv.get("i")) |str| { if (kv.get('i')) |v| {
result.id.image_id = try std.fmt.parseInt(u32, str, 10); result.id.image_id = v;
} }
if (kv.get("p")) |str| { if (kv.get('p')) |v| {
result.id.placement_id = try std.fmt.parseInt(u32, str, 10); result.id.placement_id = v;
} }
break :blk result; break :blk result;
@ -646,11 +666,11 @@ pub const Delete = union(enum) {
'n', 'N' => blk: { 'n', 'N' => blk: {
var result: Delete = .{ .newest = .{ .delete = what == 'N' } }; var result: Delete = .{ .newest = .{ .delete = what == 'N' } };
if (kv.get("I")) |str| { if (kv.get('I')) |v| {
result.newest.count = try std.fmt.parseInt(u32, str, 10); result.newest.count = v;
} }
if (kv.get("p")) |str| { if (kv.get('p')) |v| {
result.newest.placement_id = try std.fmt.parseInt(u32, str, 10); result.newest.placement_id = v;
} }
break :blk result; break :blk result;
@ -662,11 +682,11 @@ pub const Delete = union(enum) {
'p', 'P' => blk: { 'p', 'P' => blk: {
var result: Delete = .{ .intersect_cell = .{ .delete = what == 'P' } }; var result: Delete = .{ .intersect_cell = .{ .delete = what == 'P' } };
if (kv.get("x")) |str| { if (kv.get('x')) |v| {
result.intersect_cell.x = try std.fmt.parseInt(u32, str, 10); result.intersect_cell.x = v;
} }
if (kv.get("y")) |str| { if (kv.get('y')) |v| {
result.intersect_cell.y = try std.fmt.parseInt(u32, str, 10); result.intersect_cell.y = v;
} }
break :blk result; break :blk result;
@ -674,14 +694,14 @@ pub const Delete = union(enum) {
'q', 'Q' => blk: { 'q', 'Q' => blk: {
var result: Delete = .{ .intersect_cell_z = .{ .delete = what == 'Q' } }; var result: Delete = .{ .intersect_cell_z = .{ .delete = what == 'Q' } };
if (kv.get("x")) |str| { if (kv.get('x')) |v| {
result.intersect_cell_z.x = try std.fmt.parseInt(u32, str, 10); result.intersect_cell_z.x = v;
} }
if (kv.get("y")) |str| { if (kv.get('y')) |v| {
result.intersect_cell_z.y = try std.fmt.parseInt(u32, str, 10); result.intersect_cell_z.y = v;
} }
if (kv.get("z")) |str| { if (kv.get('z')) |v| {
result.intersect_cell_z.z = try std.fmt.parseInt(u32, str, 10); result.intersect_cell_z.z = v;
} }
break :blk result; break :blk result;
@ -689,8 +709,8 @@ pub const Delete = union(enum) {
'x', 'X' => blk: { 'x', 'X' => blk: {
var result: Delete = .{ .column = .{ .delete = what == 'X' } }; var result: Delete = .{ .column = .{ .delete = what == 'X' } };
if (kv.get("x")) |str| { if (kv.get('x')) |v| {
result.column.x = try std.fmt.parseInt(u32, str, 10); result.column.x = v;
} }
break :blk result; break :blk result;
@ -698,8 +718,8 @@ pub const Delete = union(enum) {
'y', 'Y' => blk: { 'y', 'Y' => blk: {
var result: Delete = .{ .row = .{ .delete = what == 'Y' } }; var result: Delete = .{ .row = .{ .delete = what == 'Y' } };
if (kv.get("y")) |str| { if (kv.get('y')) |v| {
result.row.y = try std.fmt.parseInt(u32, str, 10); result.row.y = v;
} }
break :blk result; break :blk result;
@ -707,8 +727,8 @@ pub const Delete = union(enum) {
'z', 'Z' => blk: { 'z', 'Z' => blk: {
var result: Delete = .{ .z = .{ .delete = what == 'Z' } }; var result: Delete = .{ .z = .{ .delete = what == 'Z' } };
if (kv.get("z")) |str| { if (kv.get('z')) |v| {
result.z.z = try std.fmt.parseInt(u32, str, 10); result.z.z = v;
} }
break :blk result; break :blk result;