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const std = @import("std");
const Parser = @import("../../osc.zig").Parser;
const Command = @import("../../osc.zig").Command;
/// Parse OSC 0 and OSC 2
pub fn parse(parser: *Parser, _: ?u8) ?*Command {
const cap = if (parser.capture) |*c| c else {
parser.state = .invalid;
return null;
};
cap.writer.writeByte(0) catch {
parser.state = .invalid;
return null;
};
const data = cap.trailing();
parser.command = .{
.change_window_title = data[0 .. data.len - 1 :0],
};
return &parser.command;
}
test "OSC 0: change_window_title" {
const testing = std.testing;
var p: Parser = .init(null);
p.next('0');
p.next(';');
p.next('a');
p.next('b');
const cmd = p.end(null).?.*;
try testing.expect(cmd == .change_window_title);
try testing.expectEqualStrings("ab", cmd.change_window_title);
}
test "OSC 0: longer than buffer" {
const testing = std.testing;
var p: Parser = .init(null);
const input = "0;" ++ "a" ** (Parser.MAX_BUF + 2);
for (input) |ch| p.next(ch);
try testing.expect(p.end(null) == null);
}
test "OSC 0: one shorter than buffer length" {
const testing = std.testing;
var p: Parser = .init(null);
const prefix = "0;";
const title = "a" ** (Parser.MAX_BUF - 1);
const input = prefix ++ title;
for (input) |ch| p.next(ch);
const cmd = p.end(null).?.*;
try testing.expect(cmd == .change_window_title);
try testing.expectEqualStrings(title, cmd.change_window_title);
}
test "OSC 0: exactly at buffer length" {
const testing = std.testing;
var p: Parser = .init(null);
const prefix = "0;";
const title = "a" ** Parser.MAX_BUF;
const input = prefix ++ title;
for (input) |ch| p.next(ch);
// This should be null because we always reserve space for a null terminator.
try testing.expect(p.end(null) == null);
}
test "OSC 2: change_window_title with 2" {
const testing = std.testing;
var p: Parser = .init(null);
p.next('2');
p.next(';');
p.next('a');
p.next('b');
const cmd = p.end(null).?.*;
try testing.expect(cmd == .change_window_title);
try testing.expectEqualStrings("ab", cmd.change_window_title);
}
test "OSC 2: change_window_title with utf8" {
const testing = std.testing;
var p: Parser = .init(null);
p.next('2');
p.next(';');
// '—' EM DASH U+2014 (E2 80 94)
p.next(0xE2);
p.next(0x80);
p.next(0x94);
p.next(' ');
// '‐' HYPHEN U+2010 (E2 80 90)
// Intententionally chosen to conflict with the 0x90 C1 control
p.next(0xE2);
p.next(0x80);
p.next(0x90);
const cmd = p.end(null).?.*;
try testing.expect(cmd == .change_window_title);
try testing.expectEqualStrings("— ‐", cmd.change_window_title);
}
test "OSC 2: change_window_title empty" {
const testing = std.testing;
var p: Parser = .init(null);
p.next('2');
p.next(';');
const cmd = p.end(null).?.*;
try testing.expect(cmd == .change_window_title);
try testing.expectEqualStrings("", cmd.change_window_title);
}
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