jpmschweitzerandClaude
edd8a20e0d
PtySession wraps the ptyc helper: socketpair + Process.start + recvmsg with SCM_RIGHTS for master-fd transfer, a background isolate that loops on blocking read() and posts byte chunks, plus write/resize/ kill/close. close() SIGTERMs the child so the PTY's EOF wakes the reader naturally; SIGKILL + fd close + isolate kill cover the edge where the shell ignores SIGTERM — avoids the known Linux quirk where closing an fd doesn't unblock an in-flight read() on it. Env defaults stamp TERM=xterm-256color, COLORTERM=truecolor, CLICOLOR_FORCE=1 so shells + tmux + Claude emit 24-bit sequences that xterm.dart can render. User env (HOME / USER / SHELL) still inherits via mergePtyEnv(). ffi: 2.1.3 added as a runtime dep — the FFI bindings for socketpair, recvmsg, read/write, and ioctl(TIOCSWINSZ) need an allocator we're not writing by hand. Justified in pubspec + listed in licenses.yaml per D-042. make test-core (ci/test_core.sh) runs the Flutter-free core tests under a 120s hard timeout with setsid + process-group kill, wired ahead of the fast app tests in push-check so a hung PTY test can't wedge a pre-push. Current core suite: 24 tests in ~1s. Co-Authored-By: Claude <noreply@anthropic.com>
24 lines
825 B
Dart
24 lines
825 B
Dart
/// Error type for the PTY subsystem. Flutter-free — `dart:io`'s
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/// `OSError` + `ProcessException` don't quite fit (we're a mix of
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/// syscall-level and subprocess-level failures), and we can't pull
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/// `PlatformException` from `package:flutter/services.dart` since the
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/// core library stays Flutter-free per D-005.
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library;
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/// A PTY operation failed. [op] identifies the step (`recvmsg`,
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/// `socketpair`, `ptyc`, etc.); [errno] is POSIX errno when the
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/// failure came from a syscall, otherwise `null`.
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class PtyException implements Exception {
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const PtyException(this.op, this.message, {this.errno});
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final String op;
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final String message;
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final int? errno;
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@override
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String toString() {
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final suffix = errno != null ? ' (errno=$errno)' : '';
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return 'PtyException($op): $message$suffix';
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}
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}
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