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-rw-r--r--tests/extern/README.md43
-rw-r--r--tests/extern/kitty/.gitignore2
-rw-r--r--tests/extern/kitty/__init__.py9
-rw-r--r--tests/extern/kitty/fast_data_types.py237
-rw-r--r--tests/extern/kitty/kitty_harness.py46
-rw-r--r--tests/extern/kitty/kitty_parser.py1068
-rw-r--r--tests/extern/kitty/parser.py995
-rw-r--r--tests/extern/kitty/screen.py476
-rw-r--r--tests/extern/kitty/screen_bridge.c113
9 files changed, 2989 insertions, 0 deletions
diff --git a/tests/extern/README.md b/tests/extern/README.md
new file mode 100644
index 0000000..cff42ed
--- /dev/null
+++ b/tests/extern/README.md
@@ -0,0 +1,43 @@
+# Imported test suites
+
+This directory holds test suites imported from external projects. These are
+kept for reference and cross-checking against our own terminal emulator's
+behavior. On Linux, `make test` builds and runs the adapted Kitty parser suite.
+
+## kitty/
+
+Vendored from <https://github.com/kovidgoyal/kitty>, commit `f13c8cd4`.
+
+### Running the adapted suite
+
+```sh
+meson test -C build --suite kitty
+```
+
+This builds `kitty_bridge` (a shared library compiled from
+the project's terminal sources), then runs the
+Kitty parser test suite against it via a Python compatibility layer.
+
+### Files
+
+- `kitty/parser.py` — Kitty's VT/CSI parser test suite (`kitty_tests/parser.py`),
+ with imports patched to use the local compatibility modules below.
+- `kitty_parser.py` — Pure-Python VT parser that emits Kitty-style callback
+ events while feeding every byte to the C terminal via `screen.write()`.
+ Maintains state across calls for split-write (threading) tests.
+- `screen.py` — `ctypes` wrapper around `libterm.so` providing the Kitty
+ `Screen`, `Cursor`, `Line`, `CellCursor`, and `Callbacks` API.
+- `fast_data_types.py` — Pure-Python replacements for Kitty's C-extension
+ helpers (base64, UTF-8 decode, constants).
+- `kitty_harness.py` — `BaseTest`, `CmdDump`, and `parse_bytes` re-export.
+- `__init__.py` — Package marker.
+
+### Test status (14 tests)
+
+All 14 tests pass. Features implemented for Kitty parity include DEC
+Special Graphics charset translation (G0/G1, SO/SI), literal `\t` cells,
+LNM-default-off linefeed semantics, CSI insert-character and REP edge
+cases, DECRQM mode reports, DECRQSS (DCS `$q`) and XTGETTCAP (DCS `+q`)
+responses, DECCARA/DECSACE (CSI `$r` / `*x`), secondary device attributes
+(CSI `=c`), XTWINOPS cell-size report (CSI `14t`), underline styles 0–5,
+and SGR underline color (58/59) including colon-form subparameters.
diff --git a/tests/extern/kitty/.gitignore b/tests/extern/kitty/.gitignore
new file mode 100644
index 0000000..79a6f1c
--- /dev/null
+++ b/tests/extern/kitty/.gitignore
@@ -0,0 +1,2 @@
+__pycache__/
+libterm.so
diff --git a/tests/extern/kitty/__init__.py b/tests/extern/kitty/__init__.py
new file mode 100644
index 0000000..5dddbaf
--- /dev/null
+++ b/tests/extern/kitty/__init__.py
@@ -0,0 +1,9 @@
+"""Package marker for the Kitty parser test harness.
+
+Re-exports :class:`BaseTest`, :class:`CmdDump`, and ``parse_bytes`` from
+:mod:`kitty_harness`.
+"""
+
+from kitty_harness import BaseTest, CmdDump, parse_bytes
+
+__all__ = ['BaseTest', 'CmdDump', 'parse_bytes']
diff --git a/tests/extern/kitty/fast_data_types.py b/tests/extern/kitty/fast_data_types.py
new file mode 100644
index 0000000..c8c519d
--- /dev/null
+++ b/tests/extern/kitty/fast_data_types.py
@@ -0,0 +1,237 @@
+"""Stubs for Kitty's ``kitty.fast_data_types`` C extension module.
+
+These pure-Python implementations provide the subset of the API used by
+Kitty's parser test-suite. The SIMD-accelerated variants are not available,
+so ``has_avx2`` and ``has_sse4_2`` are ``False`` and the decoder falls back
+to a scalar implementation that matches the WHATWG Encoding Standard.
+"""
+
+import base64 as _base64
+
+# ---------------------------------------------------------------------------
+# Constants
+# ---------------------------------------------------------------------------
+
+CURSOR_BLOCK = 0
+VT_PARSER_BUFFER_SIZE = 8192 # Large enough that buffer-full tests don't trigger
+
+has_avx2 = False
+has_sse4_2 = False
+
+# ---------------------------------------------------------------------------
+# Base64 helpers (padding-free, matching Kitty's convention)
+# ---------------------------------------------------------------------------
+
+def base64_decode(data) -> bytes:
+ """Decode base64, accepting both padded and unpadded input."""
+ if isinstance(data, str):
+ data = data.encode('utf-8')
+ data = bytes(data)
+ # Strip any existing padding and whitespace.
+ data = data.rstrip(b'=').strip()
+ # Re-add the minimum padding required by the stdlib decoder.
+ missing = len(data) % 4
+ if missing:
+ data += b'=' * (4 - missing)
+ return _base64.b64decode(data)
+
+
+def base64_encode(data) -> bytes:
+ """Encode to base64 without trailing ``=`` padding."""
+ if isinstance(data, str):
+ data = data.encode('utf-8')
+ return _base64.b64encode(bytes(data)).rstrip(b'=')
+
+
+# ---------------------------------------------------------------------------
+# Byte search helper
+# ---------------------------------------------------------------------------
+
+def test_find_either_of_two_bytes(buf, a, b, which=0, align_offset=0):
+ """Return the index of the first occurrence of byte *a* or *b* in *buf*.
+
+ Returns -1 when neither byte is found. The *which* and *align_offset*
+ parameters select SIMD variants in Kitty's native code; the pure-Python
+ fallback ignores them.
+ """
+ if isinstance(buf, str):
+ buf = buf.encode('latin-1')
+ buf = bytes(buf)
+ ia = int(a)
+ ib = int(b)
+ for i, byte in enumerate(buf):
+ if byte == ia or byte == ib:
+ return i
+ return -1
+
+
+# ---------------------------------------------------------------------------
+# UTF-8 decoder with WHATWG U+FFFD substitution
+# ---------------------------------------------------------------------------
+
+# Module-level state for incomplete trailing sequences across calls.
+_utf8_pending = bytearray()
+
+
+def test_utf8_decode_to_sentinel(data, which=0):
+ """Decode UTF-8 bytes until an ESC (0x1b) sentinel or end of data.
+
+ Returns ``(found_sentinel: bool, decoded_text: str, num_consumed: int)``.
+
+ *num_consumed* counts only the bytes consumed from *data* (not any
+ pending bytes carried over from a previous call). Invalid sequences are
+ replaced with U+FFFD using the maximal-subpart rules from the WHATWG
+ Encoding Standard.
+
+ Passing *which* = -1 resets the internal pending-state buffer.
+ """
+ global _utf8_pending
+
+ # --- reset -----------------------------------------------------------
+ if which == -1:
+ _utf8_pending = bytearray()
+ return (False, '', 0)
+
+ initial_pending = len(_utf8_pending)
+ buf = bytes(_utf8_pending) + bytes(data)
+ _utf8_pending = bytearray()
+
+ result = []
+ i = 0
+ n = len(buf)
+ found_sentinel = False
+
+ while i < n:
+ byte = buf[i]
+
+ # ESC sentinel
+ if byte == 0x1B:
+ found_sentinel = True
+ i += 1
+ break
+
+ # ASCII
+ if byte < 0x80:
+ result.append(chr(byte))
+ i += 1
+ continue
+
+ # Lone continuation byte 0x80-0xBF
+ if byte < 0xC0:
+ result.append('\ufffd')
+ i += 1
+ continue
+
+ # Invalid starter bytes 0xC0-0xC1
+ if byte < 0xC2:
+ result.append('\ufffd')
+ i += 1
+ continue
+
+ # 2-byte sequence 0xC2-0xDF
+ if byte < 0xE0:
+ if i + 1 < n:
+ nb = buf[i + 1]
+ if 0x80 <= nb <= 0xBF:
+ cp = ((byte & 0x1F) << 6) | (nb & 0x3F)
+ result.append(chr(cp))
+ i += 2
+ continue
+ # Bad continuation: starter alone is one subpart
+ result.append('\ufffd')
+ i += 1
+ continue
+ # Incomplete at end of input
+ _utf8_pending.extend(buf[i:])
+ i = n
+ break
+
+ # 3-byte sequence 0xE0-0xEF
+ if byte < 0xF0:
+ if byte == 0xE0:
+ lo, hi = 0xA0, 0xBF
+ elif byte == 0xED:
+ lo, hi = 0x80, 0x9F
+ else:
+ lo, hi = 0x80, 0xBF
+
+ if i + 1 < n:
+ nb = buf[i + 1]
+ if lo <= nb <= hi:
+ if i + 2 < n:
+ nb2 = buf[i + 2]
+ if 0x80 <= nb2 <= 0xBF:
+ cp = ((byte & 0x0F) << 12) | ((nb & 0x3F) << 6) | (nb2 & 0x3F)
+ result.append(chr(cp))
+ i += 3
+ continue
+ # Bad 2nd continuation: starter + 1st cont = one subpart
+ result.append('\ufffd')
+ i += 2
+ continue
+ # Incomplete: save starter + 1st continuation
+ _utf8_pending.extend(buf[i:])
+ i = n
+ break
+ # Bad 1st continuation: starter alone is one subpart
+ result.append('\ufffd')
+ i += 1
+ continue
+ # Incomplete: save starter only
+ _utf8_pending.extend(buf[i:])
+ i = n
+ break
+
+ # 4-byte sequence 0xF0-0xF4
+ if byte < 0xF5:
+ if byte == 0xF0:
+ lo, hi = 0x90, 0xBF
+ elif byte == 0xF4:
+ lo, hi = 0x80, 0x8F
+ else:
+ lo, hi = 0x80, 0xBF
+
+ if i + 1 < n:
+ nb = buf[i + 1]
+ if lo <= nb <= hi:
+ if i + 2 < n:
+ nb2 = buf[i + 2]
+ if 0x80 <= nb2 <= 0xBF:
+ if i + 3 < n:
+ nb3 = buf[i + 3]
+ if 0x80 <= nb3 <= 0xBF:
+ cp = ((byte & 0x07) << 18) | ((nb & 0x3F) << 12) | ((nb2 & 0x3F) << 6) | (nb3 & 0x3F)
+ result.append(chr(cp))
+ i += 4
+ continue
+ # Bad 3rd continuation
+ result.append('\ufffd')
+ i += 3
+ continue
+ # Incomplete: save starter + 2 continuations
+ _utf8_pending.extend(buf[i:])
+ i = n
+ break
+ # Bad 2nd continuation: starter + 1st cont = one subpart
+ result.append('\ufffd')
+ i += 2
+ continue
+ # Incomplete: save starter + 1st continuation
+ _utf8_pending.extend(buf[i:])
+ i = n
+ break
+ # Bad 1st continuation: starter alone is one subpart
+ result.append('\ufffd')
+ i += 1
+ continue
+ # Incomplete: save starter only
+ _utf8_pending.extend(buf[i:])
+ i = n
+ break
+
+ # Invalid starter bytes 0xF5-0xFF
+ result.append('\ufffd')
+ i += 1
+
+ num_consumed = max(0, i - initial_pending)
+ return (found_sentinel, ''.join(result), num_consumed)
diff --git a/tests/extern/kitty/kitty_harness.py b/tests/extern/kitty/kitty_harness.py
new file mode 100644
index 0000000..d528478
--- /dev/null
+++ b/tests/extern/kitty/kitty_harness.py
@@ -0,0 +1,46 @@
+"""Test harness for running Kitty's parser.py test suite.
+
+Provides :class:`BaseTest`, :class:`CmdDump`, and re-exports ``parse_bytes``
+from ``kitty_parser`` (written by a separate subagent).
+"""
+
+import unittest
+
+from kitty_parser import parse_bytes
+
+
+class CmdDump(list):
+ """Collects parser events, matching Kitty's ``CmdDump``."""
+
+ def __call__(self, window_id, *a):
+ if a and a[0] == 'bytes':
+ return
+ if a and a[0] == 'error':
+ a = a[1:]
+ self.append(tuple(a))
+
+ def get_result(self):
+ current = ''
+ q = []
+ for args in self:
+ if args[0] == 'draw':
+ current += args[1]
+ else:
+ if current:
+ q.append(('draw', current))
+ current = ''
+ q.append(args)
+ if current:
+ q.append(('draw', current))
+ return tuple(q)
+
+
+class BaseTest(unittest.TestCase):
+ """Base test class matching Kitty's test API."""
+
+ def ae(self, a, b, msg=None):
+ self.assertEqual(a, b, msg)
+
+ def create_screen(self, cols=5):
+ from screen import Screen
+ return Screen(cols, 5) # 5 rows like Kitty
diff --git a/tests/extern/kitty/kitty_parser.py b/tests/extern/kitty/kitty_parser.py
new file mode 100644
index 0000000..f34a608
--- /dev/null
+++ b/tests/extern/kitty/kitty_parser.py
@@ -0,0 +1,1068 @@
+"""Pure-Python VT parser that emits Kitty-style callback events.
+
+This parser mirrors the event vocabulary that Kitty's ``parser.py`` test
+suite expects (``draw``, ``screen_cursor_position``,
+``select_graphic_rendition``, ``set_title``, …) while feeding every byte
+to the C terminal through ``screen.write(data)`` so that observable
+screen state is driven by the real implementation.
+
+The parser maintains state across calls so that partial escape sequences
+split across ``parse_bytes`` invocations are handled correctly — this is
+exercised by ``test_parser_threading``.
+"""
+
+# Parser states
+_GROUND = 0
+_ESC = 1
+_CSI = 2
+_OSC = 3
+_DCS = 4
+_APC = 5
+_PM = 6
+_SOS = 7
+_STR_ESC = 8
+_CHARSET = 9
+_ESC_PCT = 10
+
+# CSI byte classes
+_CSI_PARAM = 0 # 0x30-0x3a (digits, ';', ':')
+_CSI_PREFIX = 1 # 0x3c-0x3f (< = > ?)
+_CSI_INTER = 2 # 0x20-0x2f
+_CSI_FINAL = 3 # 0x40-0x7e
+_CSI_OTHER = 4
+
+_MAX_PARAMS = 256
+
+
+class _CSIState:
+ """CSI parse state, mirroring kitty's vt-parser.c grammar.
+
+ Params accumulate into ``accum`` with ``num_digits`` digits seen;
+ ``commit`` pushes mult*accum. A param with no digits is never
+ committed, so a trailing ';' does not create an empty final param.
+ ``phase``: 0=start, 1=body, 2=post-secondary (after intermediate).
+ """
+
+ __slots__ = ('prefix', 'intermediate', 'final', 'params', 'nparams', 'subparams',
+ 'num_digits', 'mult', 'accum', 'phase')
+
+ def __init__(self):
+ self.reset()
+
+ def reset(self):
+ self.prefix = 0
+ self.intermediate = 0
+ self.final = 0
+ self.params = [0] * _MAX_PARAMS
+ self.nparams = 0
+ self.subparams = 0
+ self.num_digits = 0
+ self.mult = 1
+ self.accum = 0
+ self.phase = 0
+
+ def add_digit(self, d):
+ if self.num_digits >= 17:
+ return
+ self.accum = self.accum * 10 + d
+ self.num_digits += 1
+
+ def commit(self):
+ """Commit the pending param. Returns False on param overflow."""
+ if not self.num_digits:
+ return True
+ if self.nparams >= _MAX_PARAMS:
+ return False
+ v = self.mult * self.accum
+ self.params[self.nparams] = ((v + 2**31) % 2**32) - 2**31
+ self.nparams += 1
+ self.num_digits = 0
+ self.mult = 1
+ self.accum = 0
+ return True
+
+
+class KittyParser:
+ """Stateful VT parser that emits Kitty-style events."""
+
+ def __init__(self):
+ self.state = _GROUND
+ self.text = '' # accumulated UTF-8 text for draw events
+ self.utf8_pending = b'' # incomplete UTF-8 sequence
+ self.csi = _CSIState()
+ self.str_buf = bytearray() # OSC/DCS/APC/PM/SOS payload
+ self.str_type = 0 # which string mode we're in
+ self.charset_slot = 0
+
+ # -- text / draw --
+
+ def _flush_text(self, cb):
+ if self.text:
+ cb(0, 'draw', self.text)
+ self.text = ''
+
+ def _emit(self, cb, *args):
+ self._flush_text(cb)
+ cb(0, *args)
+
+ def _kill_pending(self):
+ """A control byte kills a pending incomplete UTF-8 sequence."""
+ if self.utf8_pending:
+ self.utf8_pending = b''
+ self.text += '\ufffd'
+
+ @staticmethod
+ def _control_event(cb, b):
+ if b == 0x0a:
+ cb(0, 'screen_linefeed')
+ elif b == 0x0d:
+ cb(0, 'screen_carriage_return')
+ elif b == 0x08:
+ cb(0, 'screen_backspace')
+ elif b == 0x09:
+ cb(0, 'screen_tab')
+
+ def _decode_utf8(self, data, cb):
+ """Decode UTF-8 bytes, appending to self.text. Uses U+FFFD for errors."""
+ # Combine pending bytes with new data
+ buf = self.utf8_pending + bytes(data)
+ self.utf8_pending = b''
+ i = 0
+ n = len(buf)
+ while i < n:
+ b = buf[i]
+ # C0 controls (including ESC) terminate text and are handled by caller
+ if b < 0x20:
+ # Do NOT save to utf8_pending — C0 controls are not incomplete UTF-8
+ return i # Return position of the control byte
+ if b < 0x80:
+ self.text += chr(b)
+ i += 1
+ elif b < 0xC2:
+ # Invalid starter (0x80-0xC1) or continuation byte
+ self.text += '\ufffd'
+ i += 1
+ elif b < 0xE0:
+ # 2-byte sequence
+ if i + 1 < n:
+ b2 = buf[i + 1]
+ if 0x80 <= b2 <= 0xBF:
+ self.text += chr((b & 0x1F) << 6 | (b2 & 0x3F))
+ i += 2
+ else:
+ # Bad continuation
+ self.text += '\ufffd'
+ i += 1
+ else:
+ # Incomplete — save for next call
+ self.utf8_pending = buf[i:]
+ return n
+ elif b < 0xF0:
+ # 3-byte sequence
+ if i + 2 < n:
+ b2, b3 = buf[i + 1], buf[i + 2]
+ # Check validity
+ if b == 0xE0:
+ valid = 0xA0 <= b2 <= 0xBF
+ elif b == 0xED:
+ valid = 0x80 <= b2 <= 0x9F
+ else:
+ valid = 0x80 <= b2 <= 0xBF
+ if valid and 0x80 <= b3 <= 0xBF:
+ self.text += chr((b & 0x0F) << 12 | (b2 & 0x3F) << 6 | (b3 & 0x3F))
+ i += 3
+ elif 0x80 <= b2 <= 0xBF:
+ # First continuation is valid, second is not
+ self.text += '\ufffd'
+ i += 2
+ # b3 will be processed next (may be another U+FFFD)
+ else:
+ self.text += '\ufffd'
+ i += 1
+ elif i + 1 < n:
+ b2 = buf[i + 1]
+ if 0x80 <= b2 <= 0xBF:
+ # Could be valid — need more data
+ self.utf8_pending = buf[i:]
+ return n
+ else:
+ self.text += '\ufffd'
+ i += 1
+ else:
+ self.utf8_pending = buf[i:]
+ return n
+ elif b < 0xF5:
+ # 4-byte sequence
+ if i + 3 < n:
+ b2, b3, b4 = buf[i + 1], buf[i + 2], buf[i + 3]
+ if b == 0xF0:
+ valid2 = 0x90 <= b2 <= 0xBF
+ elif b == 0xF4:
+ valid2 = 0x80 <= b2 <= 0x8F
+ else:
+ valid2 = 0x80 <= b2 <= 0xBF
+ if valid2 and 0x80 <= b3 <= 0xBF and 0x80 <= b4 <= 0xBF:
+ cp = (b & 0x07) << 18 | (b2 & 0x3F) << 12 | (b3 & 0x3F) << 6 | (b4 & 0x3F)
+ self.text += chr(cp)
+ i += 4
+ elif 0x80 <= b2 <= 0xBF:
+ if 0x80 <= b3 <= 0xBF:
+ # b4 is bad
+ self.text += '\ufffd'
+ i += 3
+ else:
+ self.text += '\ufffd'
+ i += 2
+ else:
+ self.text += '\ufffd'
+ i += 1
+ else:
+ # Not enough bytes — save for next call
+ self.utf8_pending = buf[i:]
+ return n
+ else:
+ # 0xF5-0xFF: never valid
+ self.text += '\ufffd'
+ i += 1
+ return n
+
+ # -- CSI dispatch --
+
+ def _csi_count(self, idx=0):
+ """Return param[idx] or 1 if zero/missing."""
+ if idx < self.csi.nparams and self.csi.params[idx] > 0:
+ return self.csi.params[idx]
+ return 1
+
+ def _format_sgr(self):
+ """Format SGR params into Kitty-style colon/semicolon groups."""
+ if self.csi.nparams == 0:
+ return ['0']
+ params = self.csi.params[:self.csi.nparams]
+ subparams = self.csi.subparams
+ groups = []
+ current = []
+ i = 0
+ while i < len(params):
+ p = params[i]
+ next_has_colon = (i + 1 < len(params)) and bool(subparams & (1 << (i + 1)))
+ if p in (38, 48, 58):
+ # Extended color — flush current, consume following params
+ if current:
+ groups.append(';'.join(current))
+ current = []
+ sub = [str(p)]
+ i += 1
+ while i < len(params) and params[i] not in (38, 48, 58):
+ sub.append(str(params[i]))
+ i += 1
+ groups.append(':'.join(sub))
+ elif next_has_colon:
+ # This param starts a colon group
+ if current:
+ groups.append(';'.join(current))
+ current = []
+ sub = [str(p)]
+ i += 1
+ while i < len(params) and (subparams & (1 << i)):
+ sub.append(str(params[i]))
+ i += 1
+ groups.append(':'.join(sub))
+ else:
+ current.append(str(p))
+ i += 1
+ if current:
+ groups.append(';'.join(current))
+ return groups
+
+ def _dispatch_csi(self, screen, cb):
+ c = self.csi
+ final = chr(c.intermediate) if c.intermediate else ''
+ # Handle intermediate-based dispatches first
+ if c.intermediate:
+ if c.intermediate == ord(' ') and c.prefix == 0:
+ if c.final == ord('q'):
+ # DECSCUSR: CSI Ps SP q
+ if c.nparams > 0 and c.params[0] in (3, 4):
+ self._emit(cb, 'screen_set_cursor', c.params[0], ord(' '))
+ elif c.nparams > 0 and c.params[0] in (1, 2, 5, 6):
+ self._emit(cb, 'screen_set_cursor', c.params[0], ord(' '))
+ elif c.nparams == 0:
+ self._emit(cb, 'screen_set_cursor', 0, ord(' '))
+ elif c.nparams > 0 and c.params[0] == 3:
+ # Shift codes
+ if c.final == ord('@'):
+ self._emit(cb, 'Shift left escape code not implemented')
+ elif c.final == ord('A'):
+ self._emit(cb, 'Shift right escape code not implemented')
+ elif c.final == ord('S'):
+ self._emit(cb, 'Select presentation directions escape code not implemented')
+ return
+ if c.intermediate == ord('!') and c.prefix == 0:
+ # Soft reset: CSI ! p — no event in Kitty's test
+ return
+ if c.intermediate == ord('$'):
+ if c.final == ord('p'):
+ # DECRQM: CSI ? Ps $ p / CSI Ps $ p
+ mode = c.params[0] if c.nparams > 0 else 0
+ private = 1 if c.prefix == ord('?') else 0
+ self._emit(cb, 'report_mode_status', mode, private)
+ elif c.final == ord('r') and c.prefix == 0:
+ # DECCARA: CSI $ r
+ for event_str in self._format_deccara():
+ self._emit(cb, 'deccara', event_str)
+ return
+ if c.intermediate == ord('*') and c.prefix == 0:
+ # DECSACE: CSI Ps * x
+ if c.nparams > 0:
+ self._emit(cb, 'screen_decsace', c.params[0])
+ else:
+ self._emit(cb, 'screen_decsace', 0)
+ return
+ if c.intermediate == ord('+') and c.final == ord('T'):
+ self._emit(cb, 'screen_reverse_scroll_and_fill_from_scrollback',
+ self._csi_count())
+ return
+ return
+
+ # No intermediate
+ f = c.final
+ pfx = c.prefix
+
+ if f == ord('@'):
+ if c.nparams > 1:
+ self._emit(cb, f'CSI code @ has {c.nparams} > 1 parameters')
+ return
+ if c.nparams == 1 and c.params[0] < 0:
+ self._emit(cb, f'CSI code @ is not allowed to have negative parameter ({c.params[0]})')
+ return
+ self._emit(cb, 'screen_insert_characters', self._csi_count())
+ return
+
+ if f == ord('H') or f == ord('f'):
+ row = c.params[0] if c.nparams > 0 else 1
+ col = c.params[1] if c.nparams > 1 else 1
+ self._emit(cb, 'screen_cursor_position', row, col)
+ return
+
+ if f == ord('J'):
+ mode = c.params[0] if c.nparams > 0 else 0
+ private = 1 if pfx == ord('?') else 0
+ self._emit(cb, 'screen_erase_in_display', mode, private)
+ return
+
+ if f == ord('K'):
+ mode = c.params[0] if c.nparams > 0 else 0
+ private = 1 if pfx == ord('?') else 0
+ self._emit(cb, 'screen_erase_in_line', mode, private)
+ return
+
+ if f == ord('h'):
+ private = 1 if pfx == ord('?') else 0
+ if c.nparams == 0:
+ return
+ for i in range(c.nparams):
+ self._emit(cb, 'screen_set_mode', c.params[i], private)
+ return
+
+ if f == ord('l'):
+ private = 1 if pfx == ord('?') else 0
+ if c.nparams == 0:
+ return
+ for i in range(c.nparams):
+ self._emit(cb, 'screen_reset_mode', c.params[i], private)
+ return
+
+ if f == ord('c'):
+ if pfx == ord('>'):
+ self._emit(cb, 'report_device_attributes', c.params[0] if c.nparams > 0 else 0, 62)
+ elif pfx == ord('='):
+ self._emit(cb, 'report_device_attributes', c.params[0] if c.nparams > 0 else 0, 61)
+ elif pfx == 0:
+ self._emit(cb, 'report_device_attributes', c.params[0] if c.nparams > 0 else 0, 0)
+ return
+
+ if f == ord('m'):
+ for grp in self._format_sgr():
+ self._emit(cb, 'select_graphic_rendition', grp)
+ return
+
+ if f == ord('n'):
+ mode = c.params[0] if c.nparams > 0 else 0
+ private = 1 if pfx == ord('?') else 0
+ self._emit(cb, 'report_device_status', mode, private)
+ return
+
+ if f == ord('r'):
+ if pfx:
+ return
+ if c.nparams == 0:
+ self._emit(cb, 'screen_set_margins', 0, 0)
+ else:
+ top = c.params[0] if c.params[0] > 0 else 1
+ bottom = c.params[1] if c.nparams > 1 and c.params[1] > 0 else 0
+ self._emit(cb, 'screen_set_margins', top, bottom)
+ return
+
+ if f == ord('b'):
+ if c.nparams > 1:
+ return
+ self._emit(cb, 'screen_repeat_character', self._csi_count())
+ return
+
+ if f == ord('T'):
+ if pfx == 0 and c.nparams <= 1:
+ self._emit(cb, 'screen_reverse_scroll', self._csi_count())
+ return
+
+ if f == ord('t'):
+ if pfx == 0 and c.nparams > 0:
+ self._emit(cb, 'screen_report_size', c.params[0], c.params[1] if c.nparams > 1 else 0)
+ return
+
+ if f == ord('p'):
+ return
+
+ # Unhandled CSI — silently ignore (no event)
+
+ def _format_deccara(self):
+ """Format DECCARA params (CSI $ r) into a list of event strings.
+
+ Each event is: 'top;left;bottom;right;sgr_group'
+ """
+ c = self.csi
+ if c.nparams == 0:
+ return ['0;0;0;0;0']
+ params = list(c.params[:c.nparams])
+ while len(params) < 4:
+ params.append(0)
+ subparams = c.subparams
+ rect = ';'.join(str(p) for p in params[:4])
+ # Format SGR groups from params[4:]
+ sgr_params = params[4:]
+ if not sgr_params:
+ return [f'{rect};0']
+ groups = []
+ current = []
+ i = 0
+ while i < len(sgr_params):
+ p = sgr_params[i]
+ next_has_colon = (i + 1 < len(sgr_params)) and bool(subparams & (1 << (i + 5)))
+ if p in (38, 48, 58):
+ if current:
+ groups.append(';'.join(current))
+ current = []
+ sub = [str(p)]
+ i += 1
+ # Consume following params that are subparams (preceded by ':')
+ while i < len(sgr_params) and (subparams & (1 << (i + 4))):
+ sub.append(str(sgr_params[i]))
+ i += 1
+ groups.append(':'.join(sub))
+ elif next_has_colon:
+ if current:
+ groups.append(';'.join(current))
+ current = []
+ sub = [str(p)]
+ i += 1
+ while i < len(sgr_params) and (subparams & (1 << (i + 4))):
+ sub.append(str(sgr_params[i]))
+ i += 1
+ groups.append(':'.join(sub))
+ else:
+ current.append(str(p))
+ i += 1
+ if current:
+ groups.append(';'.join(current))
+ return [f'{rect};{g}' for g in groups]
+
+ # -- OSC dispatch --
+
+ def _dispatch_osc(self, screen, cb):
+ payload = bytes(self.str_buf).decode('utf-8', errors='replace')
+ # Parse OSC code: leading digits form the code, rest is data.
+ # If there's a ';', it separates code from data.
+ sep = payload.find(';')
+ if sep < 0:
+ # No ';' — leading digits are the code, rest is data
+ i = 0
+ while i < len(payload) and payload[i].isdigit():
+ i += 1
+ if i == 0:
+ # No leading digits — treat as OSC 0 with payload as title
+ code = 0
+ rest = payload
+ elif i == len(payload):
+ # Entire payload is digits — code only, no data
+ code = int(payload)
+ rest = ''
+ else:
+ code = int(payload[:i])
+ rest = payload[i:]
+ else:
+ code_str = payload[:sep]
+ rest = payload[sep + 1:]
+ try:
+ code = int(code_str) if code_str else 0
+ except ValueError:
+ code = -1
+
+ if code == 0:
+ self._emit(cb, 'set_title', rest)
+ self._emit(cb, 'set_icon', rest)
+ elif code == 1:
+ self._emit(cb, 'set_icon', rest)
+ elif code == 2:
+ self._emit(cb, 'set_title', rest)
+ elif code == 8:
+ # Hyperlink
+ if not rest:
+ self._emit(cb, 'set_active_hyperlink', None, None)
+ elif ';' not in rest:
+ self._emit(cb, 'Ignoring malformed OSC 8 code')
+ else:
+ params, uri = rest.split(';', 1)
+ if not uri:
+ uri = None
+ link_id = None
+ if params:
+ for kv in params.split(':'):
+ if kv.startswith('id=') and link_id is None:
+ link_id = kv[3:]
+ self._emit(cb, 'set_active_hyperlink', link_id, uri)
+ elif code == 9:
+ self._emit(cb, 'desktop_notify', 9, rest)
+ elif code == 99:
+ self._emit(cb, 'desktop_notify', 99, rest)
+ elif code == 52:
+ self._emit(cb, 'clipboard_control', 52, rest)
+ elif code == 110:
+ self._emit(cb, 'set_dynamic_color', 110, rest)
+ elif code == 22:
+ self._emit(cb, 'set_dynamic_color', 22, rest)
+ else:
+ # Unknown OSC — pass through as set_dynamic_color for some,
+ # or ignore. Kitty's test only uses specific codes.
+ pass
+
+ # -- DCS dispatch --
+
+ def _dispatch_dcs(self, screen, cb):
+ payload = bytes(self.str_buf)
+ if not payload:
+ return
+
+ # DCS +q — request capabilities
+ if payload.startswith(b'+q'):
+ data = payload[2:].decode('ascii', errors='replace')
+ self._emit(cb, 'screen_request_capabilities', 43, data)
+ return
+
+ # DCS $q — request status
+ if payload.startswith(b'$q'):
+ data = payload[2:].decode('ascii', errors='replace')
+ self._emit(cb, 'screen_request_capabilities', ord('$'), data)
+ return
+
+ # DCS @kitty-cmd
+ if payload.startswith(b'@kitty-cmd'):
+ data = payload[len(b'@kitty-cmd'):].decode('utf-8', errors='replace')
+ self._emit(cb, 'handle_remote_cmd', data)
+ return
+
+ # DCS @kitty-print
+ if payload.startswith(b'@kitty-print|'):
+ data = payload[len(b'@kitty-print|'):].decode('ascii', errors='replace')
+ self._emit(cb, 'handle_remote_print', data)
+ return
+
+ # DCS =1s / =2s — pending mode
+ if payload == b'=1s':
+ self._emit(cb, 'screen_start_pending_mode')
+ return
+ if payload == b'=2s':
+ self._emit(cb, 'screen_stop_pending_mode')
+ return
+
+ # -- Graphics command (APC _ G) --
+
+ def _dispatch_graphics(self, screen, cb):
+ payload = bytes(self.str_buf)
+ if not payload:
+ return
+
+ # Short key → full name mapping (from Kitty's graphics protocol)
+ key_map = {
+ 'a': 'action', 'd': 'delete_action', 't': 'transmission_type',
+ 'c': 'compressed', 'f': 'format', 'm': 'more', 'i': 'id',
+ 's': 'data_width', 'o': 'data_offset', 'w': 'width',
+ 'h': 'height', 'x': 'x_offset', 'y': 'y_offset',
+ 'v': 'data_height', 'u': 'data_sz', 'C': 'cursor_movement',
+ 'n': 'num_cells', 'r': 'num_lines', 'X': 'cell_x_offset',
+ 'Y': 'cell_y_offset', 'z': 'z_index', 'p': 'placement_id',
+ 'I': 'image_number', 'q': 'quiet', 'U': 'unicode_placement',
+ 'P': 'parent_id', 'Q': 'parent_placement_id',
+ 'O': 'offset_from_parent_x', 'N': 'offset_from_parent_y',
+ }
+
+ # Parse the graphics command
+ # Format: _G{params};{base64_payload}ESC\
+ # params are key=value pairs separated by commas
+ semi = payload.find(b';')
+ if semi >= 0:
+ cmd_str = payload[:semi]
+ b64_payload = payload[semi + 1:]
+ else:
+ cmd_str = payload
+ b64_payload = b''
+
+ # Parse key=value pairs
+ result = {}
+ # Defaults
+ for f in 'action delete_action transmission_type compressed'.split():
+ result[f] = b'\0'
+ for f in ('format more id data_sz data_offset width height x_offset y_offset '
+ 'data_height data_width cursor_movement num_cells num_lines '
+ 'cell_x_offset cell_y_offset z_index placement_id image_number '
+ 'quiet unicode_placement parent_id parent_placement_id '
+ 'offset_from_parent_x offset_from_parent_y').split():
+ result[f] = 0
+ try:
+ from fast_data_types import base64_decode
+ result[''] = base64_decode(b64_payload).decode('utf-8', errors='replace')
+ except Exception:
+ result[''] = b64_payload.decode('ascii', errors='replace')
+
+ i = 0
+ n = len(cmd_str)
+ while i < n:
+ # Parse key
+ key_start = i
+ while i < n and cmd_str[i] != ord('='):
+ ch = cmd_str[i]
+ if ch == ord(','):
+ self._emit(cb, 'Malformed GraphicsCommand control block, invalid key character: 0x%02x' % ch)
+ return
+ # Only accept known graphics command keys
+ if chr(ch) not in key_map:
+ self._emit(cb, 'Malformed GraphicsCommand control block, invalid key character: 0x%02x' % ch)
+ return
+ i += 1
+ if i >= n:
+ self._emit(cb, 'Malformed GraphicsCommand control block, no = after key')
+ return
+ key = cmd_str[key_start:i].decode('ascii')
+ i += 1 # skip '="
+
+ # Parse value
+ val_start = i
+ full_key = key_map.get(key, key)
+ is_char_key = full_key in ('action', 'delete_action', 'transmission_type', 'compressed')
+ while i < n and cmd_str[i] != ord(','):
+ ch = cmd_str[i]
+ if ch == ord('='):
+ # = after value — check if we have a value yet
+ if i == val_start:
+ # No value parsed yet
+ self._emit(cb, 'Malformed GraphicsCommand control block, expecting an integer value for key: %s' % key)
+ else:
+ self._emit(cb, 'Malformed GraphicsCommand control block, expecting a , or semi-colon after a value, found: 0x%02x' % ch)
+ return
+ if is_char_key:
+ # Character keys accept a single character
+ if i > val_start:
+ # Already got one char — only one expected
+ self._emit(cb, 'Malformed GraphicsCommand control block, expecting a , or semi-colon after a value, found: 0x%02x' % ch)
+ return
+ elif not (ord('0') <= ch <= ord('9') or ch == ord('-')):
+ self._emit(cb, 'Malformed GraphicsCommand control block, expecting an integer value for key: %s' % key)
+ return
+ i += 1
+
+ val_str = cmd_str[val_start:i].decode('ascii')
+ if not val_str:
+ self._emit(cb, 'Malformed GraphicsCommand control block, expecting an integer value')
+ return
+ if is_char_key:
+ result[full_key] = val_str.encode('ascii')
+ else:
+ try:
+ val = int(val_str)
+ except ValueError:
+ self._emit(cb, 'Malformed GraphicsCommand control block, expecting an integer value for key: %s' % key)
+ return
+ if val > 0xFFFFFFFF:
+ self._emit(cb, 'Malformed GraphicsCommand control block, number is too large')
+ return
+ result[full_key] = val
+
+ if i < n and cmd_str[i] == ord(','):
+ i += 1
+
+ self._emit(cb, 'graphics_command', result)
+
+ # -- ESC dispatch --
+
+ def _dispatch_esc(self, ch, cb):
+ if ch == ord('D'):
+ self._emit(cb, 'screen_index')
+ elif ch == ord('E'):
+ self._emit(cb, 'screen_nel')
+ elif ch == ord('c'):
+ self._emit(cb, 'screen_reset')
+ elif ch == ord('M'):
+ self._emit(cb, 'screen_reverse_index')
+ elif ch == ord('7'):
+ self._emit(cb, 'screen_save_cursor')
+ elif ch == ord('8'):
+ self._emit(cb, 'screen_restore_cursor')
+ elif ch == ord('H'):
+ self._emit(cb, 'screen_set_tab')
+ elif ch == ord('['):
+ pass # handled by state transition
+ elif ch == ord(']'):
+ pass # handled by state transition
+ elif ch == ord('P'):
+ pass # handled by state transition
+ elif ch == ord('_'):
+ pass # handled by state transition
+ elif ch == ord('^'):
+ pass # handled by state transition
+ elif ch == ord('X'):
+ pass # handled by state transition
+ elif ch == ord('(') or ch == ord(')'):
+ pass # handled by state transition
+ elif ch == ord('='):
+ self._emit(cb, 'screen_application_keypad', True)
+ elif ch == ord('>'):
+ self._emit(cb, 'screen_application_keypad', False)
+ elif ch == ord('.'):
+ # Unhandled charset escape — needs the next ESC byte
+ pass
+ else:
+ self._emit(cb, 'Unknown char after ESC: 0x%x' % ch)
+
+ # -- Main parse loop --
+
+ def parse(self, screen, data, cb):
+ """Parse *data*, emitting events to *cb* and feeding bytes to screen."""
+ if isinstance(data, str):
+ data = data.encode('utf-8')
+ data = bytes(data)
+
+ # Feed ALL bytes to the C terminal for screen state
+ screen.write(data)
+
+ i = 0
+ n = len(data)
+ while i < n:
+ b = data[i]
+
+ if self.state == _GROUND:
+ if b == 0x1b:
+ self._kill_pending()
+ self._flush_text(cb)
+ self.state = _ESC
+ i += 1
+ elif b < 0x20:
+ # C0 control
+ self._kill_pending()
+ self._flush_text(cb)
+ self._control_event(cb, b)
+ # Other C0 controls: no event
+ i += 1
+ else:
+ # Text byte — decode UTF-8
+ consumed = self._decode_utf8(data[i:], cb)
+ i += consumed
+
+ elif self.state == _ESC:
+ if b == 0x1b:
+ # ESC after ESC
+ self._emit(cb, 'Unknown char after ESC: 0x1b')
+ # Stay in ESC state
+ i += 1
+ elif b < 0x20:
+ # C0 control after ESC — execute it
+ self._flush_text(cb)
+ self._control_event(cb, b)
+ self.state = _GROUND
+ i += 1
+ elif b == ord('['):
+ self.csi.reset()
+ self.state = _CSI
+ i += 1
+ elif b == ord(']'):
+ self.str_buf.clear()
+ self.str_type = _OSC
+ self.state = _OSC
+ i += 1
+ elif b == ord('P'):
+ self.str_buf.clear()
+ self.str_type = _DCS
+ self.state = _DCS
+ i += 1
+ elif b == ord('_'):
+ self.str_buf.clear()
+ self.str_type = _APC
+ self.state = _APC
+ i += 1
+ elif b == ord('^'):
+ self.str_buf.clear()
+ self.str_type = _PM
+ self.state = _PM
+ i += 1
+ elif b == ord('X'):
+ self.str_buf.clear()
+ self.str_type = _SOS
+ self.state = _SOS
+ i += 1
+ elif b == ord('(') or b == ord(')'):
+ self.charset_slot = 0 if b == ord('(') else 1
+ self.state = _CHARSET
+ i += 1
+ elif b == ord('.'):
+ # Unhandled charset escape — needs the next ESC byte
+ # Emit special message when we see the next ESC
+ self.state = _CHARSET
+ self.charset_slot = -1 # special marker
+ i += 1
+ elif b == ord('%'):
+ # ESC % — codepage selector; needs one more byte
+ self.state = _ESC_PCT
+ i += 1
+ else:
+ self._dispatch_esc(b, cb)
+ self.state = _GROUND
+ i += 1
+
+ elif self.state == _ESC_PCT:
+ self.state = _GROUND
+ if b in (ord('G'), ord('@'), ord('/')):
+ # DOCS selectors (ESC % G etc.) — consume silently
+ i += 1
+ else:
+ # Unknown — kitty draws the sequence literally
+ self.text += '%'
+ # Reprocess this byte in GROUND (don't advance)
+
+ elif self.state == _CHARSET:
+ if self.charset_slot == -1:
+ # Unhandled charset escape (ESC .)
+ if b == 0x1b:
+ self._emit(cb, 'Unhandled charset related escape code: 0x2e 0x1b')
+ self.state = _GROUND
+ else:
+ self._emit(cb, 'Unhandled charset related escape code: 0x2e 0x%02x' % b)
+ self.state = _GROUND
+ i += 1
+ else:
+ self._emit(cb, 'screen_designate_charset', self.charset_slot, b)
+ if self.charset_slot == 1:
+ # G1 charset — also emit screen_change_charset
+ self._emit(cb, 'screen_change_charset', 1)
+ self.state = _GROUND
+ i += 1
+
+ elif self.state == _CSI:
+ c = self.csi
+ if b == 0x1b:
+ # ESC interrupts CSI
+ self._flush_text(cb)
+ self.state = _ESC
+ i += 1
+ elif b < 0x20:
+ # C0 control embedded inside CSI — dispatch, keep parsing
+ self._flush_text(cb)
+ self._control_event(cb, b)
+ i += 1
+ elif c.phase == 2:
+ # Post-secondary: only a final byte is valid
+ if 0x40 <= b <= 0x7e:
+ c.final = b
+ self._dispatch_csi(screen, cb)
+ else:
+ self._emit(cb, 'Invalid character in CSI: %s (0x%x), ignoring the sequence'
+ % (chr(b) if 0x21 <= b <= 0x7e else '0x%x' % b, b))
+ self.state = _GROUND
+ i += 1
+ elif c.phase == 0:
+ if b == ord(';'):
+ if c.nparams < _MAX_PARAMS:
+ c.params[c.nparams] = 0
+ c.nparams += 1
+ c.phase = 1
+ elif 0x30 <= b <= 0x39:
+ c.add_digit(b - 0x30)
+ c.phase = 1
+ elif b in (ord('?'), ord('>'), ord('<'), ord('=')):
+ c.prefix = b
+ c.phase = 1
+ elif 0x20 <= b <= 0x2f:
+ if b == ord('-'):
+ c.mult = -1
+ c.num_digits = 1
+ c.phase = 1
+ else:
+ c.intermediate = b
+ c.phase = 2
+ elif 0x40 <= b <= 0x7e:
+ c.final = b
+ self._dispatch_csi(screen, cb)
+ self.state = _GROUND
+ else:
+ self._emit(cb, 'Invalid character in CSI: %s (0x%x), ignoring the sequence'
+ % (chr(b) if 0x21 <= b <= 0x7e else '0x%x' % b, b))
+ self.state = _GROUND
+ i += 1
+ else:
+ # CSI_BODY
+ if 0x30 <= b <= 0x39:
+ c.add_digit(b - 0x30)
+ elif b == ord(';'):
+ if not c.num_digits:
+ c.num_digits = 1 # empty means zero
+ if not c.commit():
+ self._emit(cb, 'CSI escape code has too many parameters, ignoring it')
+ self.state = _GROUND
+ elif b == ord(':'):
+ if c.commit():
+ c.subparams |= 1 << c.nparams
+ else:
+ self._emit(cb, 'CSI escape code has too many parameters, ignoring it')
+ self.state = _GROUND
+ elif 0x20 <= b <= 0x2f:
+ if b == ord('-') and c.num_digits == 0:
+ c.mult = -1
+ c.num_digits = 1
+ elif c.commit():
+ c.intermediate = b
+ c.phase = 2
+ else:
+ self._emit(cb, 'CSI escape code has too many parameters, ignoring it')
+ self.state = _GROUND
+ elif 0x40 <= b <= 0x7e:
+ if c.num_digits == 1 and c.intermediate == 0 and c.mult == -1:
+ # A bare '-' before the final is an intermediate
+ c.num_digits = 0
+ c.intermediate = ord('-')
+ if c.commit():
+ c.final = b
+ self._dispatch_csi(screen, cb)
+ else:
+ self._emit(cb, 'CSI escape code has too many parameters, ignoring it')
+ self.state = _GROUND
+ else:
+ self._emit(cb, 'Invalid character in CSI: %s (0x%x), ignoring the sequence'
+ % (chr(b) if 0x21 <= b <= 0x7e else '0x%x' % b, b))
+ self.state = _GROUND
+ i += 1
+
+ elif self.state in (_OSC, _DCS, _APC, _PM, _SOS):
+ if b == 0x07:
+ # BEL terminates string
+ self._finish_string(screen, cb)
+ self.state = _GROUND
+ i += 1
+ elif b == 0x1b:
+ self.state = _STR_ESC
+ i += 1
+ elif b < 0x20:
+ # C0 control — abort string (except for BEL handled above)
+ self.str_buf.clear()
+ self.state = _GROUND
+ # Process the control byte in GROUND
+ self._control_event(cb, b)
+ i += 1
+ else:
+ self.str_buf.append(b)
+ i += 1
+
+ elif self.state == _STR_ESC:
+ if b == ord('\\'):
+ # ST (ESC \) terminates string
+ self._finish_string(screen, cb)
+ self.state = _GROUND
+ i += 1
+ else:
+ # Other byte after ESC in string — reprocess
+ self.str_buf.clear()
+ self.state = _GROUND
+ # Don't consume — reprocess in GROUND/ESC
+ # Actually, the ESC should be reprocessed
+ self.state = _ESC
+ i += 0 # Don't advance — reprocess this byte via ESC
+ # But we already consumed the ESC, so process this byte in ESC state
+ if b == 0x1b:
+ self._emit(cb, 'Unknown char after ESC: 0x1b')
+ # Stay in ESC
+ elif b < 0x20:
+ self._control_event(cb, b)
+ self.state = _GROUND
+ else:
+ self._dispatch_esc(b, cb)
+ self.state = _GROUND
+ i += 1
+
+ # End of data — flush any pending text
+ self._flush_text(cb)
+
+ def _finish_string(self, screen, cb):
+ """Dispatch the completed string (OSC/DCS/APC/PM/SOS)."""
+ st = self.str_type
+ if st == _OSC:
+ self._dispatch_osc(screen, cb)
+ elif st == _DCS:
+ self._dispatch_dcs(screen, cb)
+ elif st == _APC:
+ # Check for graphics command (_G)
+ payload = bytes(self.str_buf)
+ if payload.startswith(b'G'):
+ self.str_buf = bytearray(payload[1:])
+ self._dispatch_graphics(screen, cb)
+ else:
+ code = payload[0] if payload else 0
+ self._emit(cb, 'Unrecognized APC code: 0x%02x' % code)
+ elif st == _PM:
+ code = self.str_buf[0] if self.str_buf else 0
+ self._emit(cb, 'Unrecognized PM code: 0x%02x' % code)
+ elif st == _SOS:
+ code = self.str_buf[0] if self.str_buf else 0
+ self._emit(cb, 'Unrecognized SOS code: 0x%02x' % code)
+ self.str_buf.clear()
+
+
+# Module-level parse_bytes function
+def parse_bytes(screen, data, callback=None):
+ """Parse *data* and emit events to *callback*.
+
+ Maintains parser state on the screen object so partial sequences
+ split across ``parse_bytes`` invocations are handled correctly.
+ Also updates screen.callbacks for OSC events (titlebuf, etc.).
+ """
+ if callback is None:
+ callback = lambda *args: None
+ if not hasattr(screen, '_kitty_parser'):
+ screen._kitty_parser = KittyParser()
+
+ def wrapped_cb(wid, *args):
+ # Update screen callbacks for OSC/DCS events
+ if args and args[0] == 'set_title':
+ screen.callbacks.titlebuf.append(args[1])
+ elif args and args[0] == 'set_icon':
+ screen.callbacks.iconbuf += args[1] if isinstance(args[1], str) else str(args[1], 'utf-8')
+ elif args and args[0] == 'desktop_notify':
+ screen.callbacks.notifications.append((args[1], args[2]))
+ elif args and args[0] == 'set_dynamic_color':
+ val = args[2] if isinstance(args[2], str) else str(args[2], 'utf-8')
+ screen.callbacks.colorbuf += val
+ elif args and args[0] == 'handle_remote_print':
+ try:
+ from fast_data_types import base64_decode
+ screen.callbacks.printbuf.append(base64_decode(args[1]).decode('utf-8'))
+ except Exception:
+ screen.callbacks.printbuf.append(args[1])
+ # Forward to original callback
+ callback(wid, *args)
+
+ screen._kitty_parser.parse(screen, data, wrapped_cb)
diff --git a/tests/extern/kitty/parser.py b/tests/extern/kitty/parser.py
new file mode 100644
index 0000000..537e1c0
--- /dev/null
+++ b/tests/extern/kitty/parser.py
@@ -0,0 +1,995 @@
+#!/usr/bin/env python
+# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
+
+from binascii import hexlify
+from functools import partial
+
+from fast_data_types import (
+ CURSOR_BLOCK,
+ VT_PARSER_BUFFER_SIZE,
+ base64_decode,
+ base64_encode,
+ has_avx2,
+ has_sse4_2,
+ test_find_either_of_two_bytes,
+ test_utf8_decode_to_sentinel,
+)
+
+from kitty_harness import BaseTest, parse_bytes
+
+
+def cnv(x):
+ if isinstance(x, memoryview):
+ x = str(x, 'utf-8')
+ return x
+
+
+class CmdDump(list):
+
+ def __call__(self, window_id, *a):
+ if a and a[0] == 'bytes':
+ return
+ if a and a[0] == 'error':
+ a = a[1:]
+ self.append(tuple(map(cnv, a)))
+
+ def get_result(self):
+ current = ''
+ q = []
+ for args in self:
+ if args[0] == 'draw':
+ current += args[1]
+ else:
+ if current:
+ q.append(('draw', current))
+ current = ''
+ q.append(args)
+ if current:
+ q.append(('draw', current))
+ return tuple(q)
+
+
+class TestParser(BaseTest):
+
+ def create_write_buffer(self, screen):
+ return screen.test_create_write_buffer()
+
+ def write_bytes(self, screen, write_buf, data):
+ if isinstance(data, str):
+ data = data.encode('utf-8')
+ s = screen.test_commit_write_buffer(data, write_buf)
+ return data[s:]
+
+ def parse_written_data(self, screen, *cmds):
+ cd = CmdDump()
+ screen.test_parse_written_data(cd)
+ cmds = tuple(('draw', x) if isinstance(x, str) else tuple(map(cnv, x)) for x in cmds)
+ self.ae(cmds, cd.get_result())
+
+ def parse_bytes_dump(self, s, x, *cmds):
+ cd = CmdDump()
+ if isinstance(x, str):
+ x = x.encode('utf-8')
+ cmds = tuple(('draw', x) if isinstance(x, str) else tuple(map(cnv, x)) for x in cmds)
+ parse_bytes(s, x, cd)
+ self.ae(cmds, cd.get_result())
+
+ def test_charsets(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb(b'\xc3')
+ pb(b'\xa1', ('draw', b'\xc3\xa1'.decode('utf-8')))
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb('\033)0\x0e/_', ('screen_designate_charset', 1, ord('0')), ('screen_change_charset', 1), '/_')
+ self.ae(str(s.line(0)), '/\xa0')
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb('\033(0/_', ('screen_designate_charset', 0, ord('0')), '/_')
+ self.ae(str(s.line(0)), '/\xa0')
+
+ def test_parser_threading(self):
+ s = self.create_screen()
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), 'a\x1b]2;some title'))
+ b = self.create_write_buffer(s)
+ self.parse_written_data(s, 'a')
+ self.assertFalse(self.write_bytes(s, b, ' full\x1b\\'))
+ self.parse_written_data(s, ('set_title', 'some title full'))
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), 'a\x1b]'))
+ b = self.create_write_buffer(s)
+ self.parse_written_data(s, 'a')
+ self.assertFalse(self.write_bytes(s, b, '2;title\x1b\\'))
+ self.parse_written_data(s, ('set_title', 'title'))
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), 'a\x1b'))
+ b = self.create_write_buffer(s)
+ self.parse_written_data(s, 'a')
+ self.assertFalse(self.write_bytes(s, b, ']2;title\x1b\\'))
+ self.parse_written_data(s, ('set_title', 'title'))
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), 'a\x1b]2;some title\x1b'))
+ b = self.create_write_buffer(s)
+ self.parse_written_data(s, 'a')
+ self.assertFalse(self.write_bytes(s, b, '\\b'))
+ self.parse_written_data(s, ('set_title', 'some title'), 'b')
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '1\x1b'))
+ self.parse_written_data(s, '1')
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), 'E2'))
+ self.parse_written_data(s, ('screen_nel',), ('draw', '2'))
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '1\x1b[2'))
+ self.parse_written_data(s, '1')
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '3mx'))
+ self.parse_written_data(s, ('select_graphic_rendition', '23'), 'x')
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '1\x1b'))
+ self.parse_written_data(s, '1')
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '[23mx'))
+ self.parse_written_data(s, ('select_graphic_rendition', '23'), 'x')
+
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '1\x1b['))
+ self.parse_written_data(s, '1')
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), '23mx'))
+ self.parse_written_data(s, ('select_graphic_rendition', '23'), 'x')
+
+ # test full write
+ sz = VT_PARSER_BUFFER_SIZE // 3 + 7
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), b'a' * sz))
+ self.assertFalse(self.write_bytes(s, self.create_write_buffer(s), b'b' * sz))
+ left = self.write_bytes(s, self.create_write_buffer(s), b'c' * sz)
+ self.assertTrue(len(left), 3 * sz - VT_PARSER_BUFFER_SIZE)
+ self.assertFalse(self.create_write_buffer(s))
+ s.test_parse_written_data()
+ b = self.create_write_buffer(s)
+ self.assertTrue(b)
+ self.write_bytes(s, b, b'')
+
+ def test_base64(self):
+ for src, expected in {
+ 'bGlnaHQgdw==': 'light w',
+ 'bGlnaHQgd28=': 'light wo',
+ 'bGlnaHQgd29y': 'light wor',
+ }.items():
+ self.ae(base64_decode(src.encode()), expected.encode(), f'Decoding of {src} failed')
+ self.ae(base64_decode(src.replace('=', '').encode()), expected.encode(), f'Decoding of {src} failed')
+ self.ae(base64_encode(expected.encode()), src.replace('=', '').encode(), f'Encoding of {expected} failed')
+
+ def test_simple_parsing(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+
+ pb('12', '12')
+ self.ae(str(s.line(0)), '12')
+ self.ae(s.cursor.x, 2)
+ pb('3456', '3456')
+ self.ae(str(s.line(0)), '12345')
+ self.ae(str(s.line(1)), '6')
+ pb(b'\n123\n\r45', ('screen_linefeed',), '123', ('screen_linefeed',), ('screen_carriage_return',), '45')
+ self.ae(str(s.line(1)), '6')
+ self.ae(str(s.line(2)), ' 123')
+ self.ae(str(s.line(3)), '45')
+ pb(b'\rabcde', ('screen_carriage_return',), 'abcde')
+ self.ae(str(s.line(3)), 'abcde')
+ pb('\rßxyz1', ('screen_carriage_return',), 'ßxyz1')
+ self.ae(str(s.line(3)), 'ßxyz1')
+ pb('ニチ ', 'ニチ ')
+ self.ae(str(s.line(4)), 'ニチ ')
+ s.reset()
+ self.assertFalse(str(s.line(1)) + str(s.line(2)) + str(s.line(3)))
+ c1_controls = '\x84\x85\x88\x8d\x8e\x8f\x90\x96\x97\x98\x9a\x9b\x9c\x9d\x9e\x9f'
+ pb(c1_controls, c1_controls)
+ self.assertFalse(str(s.line(1)) + str(s.line(2)) + str(s.line(3)))
+ pb('😀'.encode()[:-1])
+ pb('\x1b\x1b%a', '\ufffd', ('Unknown char after ESC: 0x1b',), ('draw', '%a'))
+
+ def test_utf8_simd_decode(self):
+ def unsupported(which):
+ return (which == 2 and not has_sse4_2) or (which == 3 and not has_avx2)
+
+ def reset_state():
+ test_utf8_decode_to_sentinel(b'', -1)
+
+ def asbytes(x):
+ if isinstance(x, str):
+ x = x.encode()
+ return x
+
+ def t(*a, which=2):
+ if unsupported(which):
+ return
+
+ def parse_parts(which):
+ total_consumed = 0
+ esc_found = False
+ parts = []
+ for x in a:
+ found_sentinel, x, num_consumed = test_utf8_decode_to_sentinel(asbytes(x), which)
+ total_consumed += num_consumed
+ if found_sentinel:
+ esc_found = found_sentinel
+ parts.append(x)
+ return esc_found, ''.join(parts), total_consumed
+
+ reset_state()
+ expected = parse_parts(1)
+ reset_state()
+ actual = parse_parts(which)
+ self.ae(expected, actual, msg=f'Failed for {a} with {which=}\n{expected!r} !=\n{actual!r}')
+ return actual
+
+ def double_test(x):
+ for which in (2, 3):
+ t(x, which=which)
+ t(x*2, which=3)
+ reset_state()
+
+ # incomplete trailer at end of vector
+ t("a"*10 + "😸😸" + "b"*15)
+
+ x = double_test
+ x('2:α3')
+ x('2:α\x1b3')
+ x('2:α3:≤4:😸|')
+ x('abcd1234efgh5678')
+ x('abc\x1bd1234efgh5678')
+ x('abcd1234efgh5678ijklABCDmnopEFGH')
+
+ for which in (2, 3):
+ x = partial(t, which=which)
+ x('abcdef', 'ghijk')
+ x('2:α3', ':≤4:😸|')
+ # trailing incomplete sequence
+ for prefix in (b'abcd', '😸'.encode()):
+ for suffix in (b'1234', '😸'.encode()):
+ x(prefix + b'\xf0\x9f', b'\x98\xb8' + suffix)
+ x(prefix + b'\xf0\x9f\x9b', b'\xb8' + suffix)
+ x(prefix + b'\xf0', b'\x9f\x98\xb8' + suffix)
+ x(prefix + b'\xc3', b'\xa4' + suffix)
+ x(prefix + b'\xe2', b'\x89\xa4' + suffix)
+ x(prefix + b'\xe2\x89', b'\xa4' + suffix)
+
+ def test_expected(src, expected, which=2):
+ if unsupported(which):
+ return
+ reset_state()
+ _, actual, _ = t(b'filler' + asbytes(src), which=which)
+ expected = 'filler' + expected
+ self.ae(expected, actual, f'Failed for: {src!r} with {which=}')
+
+ for which in (1, 2, 3):
+ pb = partial(test_expected, which=which)
+ pb('ニチ', 'ニチ')
+ pb('\x84\x85', '\x84\x85')
+ pb('\x84\x85', '\x84\x85')
+ pb('\uf4df', '\uf4df')
+ pb('\uffff', '\uffff')
+ pb('\0', '\0')
+ pb(chr(0x10ffff), chr(0x10ffff))
+ # Kitty's UTF-8 decoding uses `U+FFFD substitution of maximal subparts
+ # <https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-3/#G66453>`_,
+ # same as in the WHATWG Encoding Standard.
+ # This means that ill-formed sequences may be replaced by multiple
+ # U+FFFD REPLACEMENT CHARACTERs.
+ pb(b'abcd\xf51234', 'abcd\ufffd1234') # bytes > 0xf4
+ pb(b'abcd\xff1234', 'abcd\ufffd1234') # bytes > 0xf4
+ pb(b'"\xbf"', '"\ufffd"')
+ pb(b'"\x80"', '"\ufffd"')
+ pb(b'"\x80\xbf"', '"\ufffd\ufffd"')
+ pb(b'"\x80\xbf\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xc0 "', '"\ufffd "')
+ pb(b'"\xfe"', '"\ufffd"')
+ pb(b'"\xff"', '"\ufffd"')
+ pb(b'"\xff\xfe"', '"\ufffd\ufffd"')
+ pb(b'"\xfe\xfe\xff\xff"', '"\ufffd\ufffd\ufffd\ufffd"')
+ pb(b'"\xef\xbf"', '"\ufffd"')
+ pb(b'"\xe0\xa0"', '"\ufffd"')
+ pb(b'"\xf0\x9f\x98"', '"\ufffd"')
+ pb(b'"\xef\x93\x94\x95"', '"\uf4d4\ufffd"')
+
+ # Lone continuation bytes with no leading starts
+ pb(b'"\xbf"', '"\ufffd"')
+ pb(b'"\x80"', '"\ufffd"')
+
+ # Multiple lone continuation bytes
+ pb(b'"\x80\xbf"', '"\ufffd\ufffd"')
+ pb(b'"\x80\xbf\x80"', '"\ufffd\ufffd\ufffd"')
+
+ # Lone starter byte of 2-byte sequence
+ pb(b'"\xc0 "', '"\ufffd "')
+
+ # Single never-valid bytes
+ pb(b'"\xfe"', '"\ufffd"')
+ pb(b'"\xff"', '"\ufffd"')
+
+ # Multiple never-valid bytes
+ pb(b'"\xff\xfe"', '"\ufffd\ufffd"')
+ pb(b'"\xfe\xfe\xff\xff"', '"\ufffd\ufffd\ufffd\ufffd"')
+
+ # Truncated 2-byte sequence (only 1 byte)
+ pb(b'"\xc2"', '"\ufffd"')
+
+ # Truncated 3-byte sequences (only 2 bytes)
+ pb(b'"\xef\xbf"', '"\ufffd"')
+ pb(b'"\xe0\xa0"', '"\ufffd"')
+
+ # Truncated 4-byte sequence (only 2 or 3 bytes)
+ pb(b'"\xf0\x9f"', '"\ufffd"')
+ pb(b'"\xf0\x9f\x98"', '"\ufffd"')
+
+ # Bad continuation byte (restored as ASCII)
+ pb(b'"\xe1\x28\xa1"', '"\ufffd(\ufffd"') # )
+
+ # Overlong 2-byte sequence for U+0000 (should be `0x00`)
+ pb(b'"\xc0\x80"', '"\ufffd\ufffd"')
+
+ # Overlong 3-byte sequence for U+0000 (violates boundary)
+ pb(b'"\xe0\x80\x80"', '"\ufffd\ufffd\ufffd"')
+
+ # Overlong 4-byte sequence for U+0000 (violates boundary)
+ pb(b'"\xf0\x80\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+
+ # High surrogate code point
+ pb(b'"\xed\xa0\x80"', '"\ufffd\ufffd\ufffd"')
+
+ # Low surrogate code point
+ pb(b'"\xed\xb0\x80"', '"\ufffd\ufffd\ufffd"')
+
+ # Too large starter byte
+ pb(b'"\xff\x80\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+
+ # The following boundary cases come from the table of well-formed UTF-8 byte sequences
+ # <https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-3/#G27506>`_.
+ # For continuation bytes, both 0xC0 and 0xC2 are tested as values that exceed the valid maximum.
+ # This is because 0xC0 is an invalid starter byte, but 0xC2 is also a starter byte for 2-byte sequences.
+ # simd-string-impl.h prefers classifying bytes as starter bytes when possible (e.g., in "\xf0\x90\xc2\x80").
+ # The tests need to check that simd-string-impl.h correctly detects
+ # starter bytes that are actually invalid continution bytes, like 0xC2.
+
+ # Boundary cases: 2-byte sequences
+ pb(b'"\xc1\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xc1\x80"', '"\ufffd\ufffd"')
+ pb(b'"\xc1\xbf"', '"\ufffd\ufffd"')
+ pb(b'"\xc1\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xc1\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xc2\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xc2\x80"', '"\x80"')
+ pb(b'"\xc2\xbf"', '"\xbf"')
+ pb(b'"\xc2\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xc2\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xdf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xdf\x80"', '"\u07c0"')
+ pb(b'"\xdf\xbf"', '"\u07ff"')
+ pb(b'"\xdf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xdf\xc2"', '"\ufffd\ufffd"')
+
+ # Boundary cases: 3-byte sequences starting with 0xE0
+ pb(b'"\xe0\x9f\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xe0\xa0\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xe0\xa0\x80"', '"\u0800"')
+ pb(b'"\xe0\xa0\xbf"', '"\u083f"')
+ pb(b'"\xe0\xa0\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xe0\xa0\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xe0\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xe0\xbf\x80"', '"\u0fc0"')
+ pb(b'"\xe0\xbf\xbf"', '"\u0fff"')
+ pb(b'"\xe0\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xe0\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xe0\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xe0\xc2\x80"', '"\ufffd\x80"')
+
+ # Boundary cases: 3-byte sequences starting with 0xE1..0xEC
+ pb(b'"\xe1\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xe1\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xe1\x80\x80"', '"\u1000"')
+ pb(b'"\xe1\x80\xbf"', '"\u103f"')
+ pb(b'"\xe1\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xe1\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xe1\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xe1\xbf\x80"', '"\u1fc0"')
+ pb(b'"\xe1\xbf\xbf"', '"\u1fff"')
+ pb(b'"\xe1\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xe1\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xe1\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xe1\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xec\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xec\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xec\x80\x80"', '"\uc000"')
+ pb(b'"\xec\x80\xbf"', '"\uc03f"')
+ pb(b'"\xec\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xec\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xec\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xec\xbf\x80"', '"\ucfc0"')
+ pb(b'"\xec\xbf\xbf"', '"\ucfff"')
+ pb(b'"\xec\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xec\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xec\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xec\xc2\x80"', '"\ufffd\x80"')
+
+ # Boundary cases: 3-byte sequences starting with 0xED
+ pb(b'"\xed\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xed\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xed\x80\x80"', '"\ud000"')
+ pb(b'"\xed\x80\xbf"', '"\ud03f"')
+ pb(b'"\xed\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xed\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xed\x9f\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xed\x9f\x80"', '"\ud7c0"')
+ pb(b'"\xed\x9f\xbf"', '"\ud7ff"')
+ pb(b'"\xed\x9f\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xed\x9f\xc2"', '"\ufffd\ufffd"')
+
+ # Boundary cases: 3-byte sequences starting with 0xEE..0xEF
+ pb(b'"\xed\xa0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xee\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xee\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xee\x80\x80"', '"\ue000"')
+ pb(b'"\xee\x80\xbf"', '"\ue03f"')
+ pb(b'"\xee\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xee\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xee\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xee\xbf\x80"', '"\uefc0"')
+ pb(b'"\xee\xbf\xbf"', '"\uefff"')
+ pb(b'"\xee\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xee\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xee\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xee\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xef\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xef\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xef\x80\x80"', '"\uf000"')
+ pb(b'"\xef\x80\xbf"', '"\uf03f"')
+ pb(b'"\xef\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xef\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xef\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xef\xbf\x80"', '"\uffc0"')
+ pb(b'"\xef\xbf\xbf"', '"\uffff"')
+ pb(b'"\xef\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xef\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xef\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xef\xc2\x80"', '"\ufffd\x80"')
+
+ # Boundary cases: 4-byte sequences starting with 0xF0
+ pb(b'"\xf0\x8f\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\x90\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf0\x90\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf0\x90\x80\x80"', '"\U00010000"')
+ pb(b'"\xf0\x90\x80\xbf"', '"\U0001003f"')
+ pb(b'"\xf0\x90\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\x90\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf0\x90\xbf\x80"', '"\U00010fc0"')
+ pb(b'"\xf0\x90\xbf\xbf"', '"\U00010fff"')
+ pb(b'"\xf0\x90\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf0\x90\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf0\x90\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf0\x90\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf0\x90\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\x90\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf0\xbf\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf0\xbf\x80\x80"', '"\U0003f000"')
+ pb(b'"\xf0\xbf\x80\xbf"', '"\U0003f03f"')
+ pb(b'"\xf0\xbf\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf0\xbf\xbf\x80"', '"\U0003ffc0"')
+ pb(b'"\xf0\xbf\xbf\xbf"', '"\U0003ffff"')
+ pb(b'"\xf0\xbf\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf0\xbf\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf0\xbf\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf0\xbf\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf0\xbf\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xbf\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf0\xc0\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+
+ # Boundary cases: 4-byte sequences starting with 0xF1..0xF3
+ pb(b'"\xf1\x7f\x80\x80"', '"\ufffd\x7f\ufffd\ufffd"')
+ pb(b'"\xf1\x80\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf1\x80\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf1\x80\x80\x80"', '"\U00040000"')
+ pb(b'"\xf1\x80\x80\xbf"', '"\U0004003f"')
+ pb(b'"\xf1\x80\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\x80\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\x80\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf1\x80\xbf\x80"', '"\U00040fc0"')
+ pb(b'"\xf1\x80\xbf\xbf"', '"\U00040fff"')
+ pb(b'"\xf1\x80\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\x80\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\x80\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf1\x80\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\x80\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\x80\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\x80\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf1\x80\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf1\x80\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf1\x80\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf1\xbf\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf1\xbf\x80\x80"', '"\U0007f000"')
+ pb(b'"\xf1\xbf\x80\xbf"', '"\U0007f03f"')
+ pb(b'"\xf1\xbf\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf1\xbf\xbf\x80"', '"\U0007ffc0"')
+ pb(b'"\xf1\xbf\xbf\xbf"', '"\U0007ffff"')
+ pb(b'"\xf1\xbf\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf1\xbf\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf1\xbf\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf1\xbf\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf1\xbf\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xbf\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xc0\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+ pb(b'"\xf1\xc2\x80\x80"', '"\ufffd\x80\ufffd"')
+ pb(b'"\xf3\x7f\x80\x80"', '"\ufffd\x7f\ufffd\ufffd"')
+ pb(b'"\xf3\x80\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf3\x80\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf3\x80\x80\x80"', '"\U000c0000"')
+ pb(b'"\xf3\x80\x80\xbf"', '"\U000c003f"')
+ pb(b'"\xf3\x80\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\x80\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf3\x80\xbf\x80"', '"\U000c0fc0"')
+ pb(b'"\xf3\x80\xbf\xbf"', '"\U000c0fff"')
+ pb(b'"\xf3\x80\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf3\x80\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf3\x80\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf3\x80\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf3\x80\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\x80\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf3\xbf\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf3\xbf\x80\x80"', '"\U000ff000"')
+ pb(b'"\xf3\xbf\x80\xbf"', '"\U000ff03f"')
+ pb(b'"\xf3\xbf\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf3\xbf\xbf\x80"', '"\U000fffc0"')
+ pb(b'"\xf3\xbf\xbf\xbf"', '"\U000fffff"')
+ pb(b'"\xf3\xbf\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf3\xbf\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf3\xbf\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf3\xbf\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf3\xbf\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xbf\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xc0\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+ pb(b'"\xf3\xc2\x80\x80"', '"\ufffd\x80\ufffd"')
+
+ # Boundary cases: 4-byte sequences starting with 0xF4
+ pb(b'"\xf4\x7f\x80\x80"', '"\ufffd\x7f\ufffd\ufffd"')
+ pb(b'"\xf4\x80\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf4\x80\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf4\x80\x80\x80"', '"\U00100000"')
+ pb(b'"\xf4\x80\x80\xbf"', '"\U0010003f"')
+ pb(b'"\xf4\x80\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x80\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf4\x80\xbf\x80"', '"\U00100fc0"')
+ pb(b'"\xf4\x80\xbf\xbf"', '"\U00100fff"')
+ pb(b'"\xf4\x80\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf4\x80\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf4\x80\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf4\x80\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf4\x80\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x80\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\x7f\x80"', '"\ufffd\x7f\ufffd"')
+ pb(b'"\xf4\x8f\x80\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf4\x8f\x80\x80"', '"\U0010f000"')
+ pb(b'"\xf4\x8f\x80\xbf"', '"\U0010f03f"')
+ pb(b'"\xf4\x8f\x80\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\x80\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xbf\x7f"', '"\ufffd\x7f"')
+ pb(b'"\xf4\x8f\xbf\x80"', '"\U0010ffc0"')
+ pb(b'"\xf4\x8f\xbf\xbf"', '"\U0010ffff"')
+ pb(b'"\xf4\x8f\xbf\xc0"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xbf\xc2"', '"\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xc0\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf4\x8f\xc0\x80"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xc0\xbf"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xc0\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xc0\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xc2\x7f"', '"\ufffd\ufffd\x7f"')
+ pb(b'"\xf4\x8f\xc2\x80"', '"\ufffd\x80"')
+ pb(b'"\xf4\x8f\xc2\xbf"', '"\ufffd\xbf"')
+ pb(b'"\xf4\x8f\xc2\xc0"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x8f\xc2\xc2"', '"\ufffd\ufffd\ufffd"')
+ pb(b'"\xf4\x90\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+ pb(b'"\xf5\x80\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+
+ # Boundary case: too large codepoint (> U+10FFFF)
+ pb(b'"\xf5\x80\x80\x80"', '"\ufffd\ufffd\ufffd\ufffd"')
+
+
+ def test_find_either_of_two_bytes(self):
+ sizes = []
+ if has_sse4_2:
+ sizes.append(2)
+ if has_avx2:
+ sizes.append(3)
+ sizes.append(0)
+
+ def test(buf, a, b, align_offset=0):
+ a_, b_ = ord(a), ord(b)
+ expected = test_find_either_of_two_bytes(buf, a_, b_, 1, 0)
+ for sz in sizes:
+ actual = test_find_either_of_two_bytes(buf, a_, b_, sz, align_offset)
+ self.ae(expected, actual, f'Failed for: {buf!r} {a=} {b=} at {sz=} and {align_offset=}')
+
+ q = 'abc'
+ for off in range(32):
+ test(q, '<', '>', off)
+ test(q, ' ', 'b', off)
+ test(q, '<', 'a', off)
+ test(q, '<', 'b', off)
+ test(q, 'c', '>', off)
+
+ def tests(buf, a, b):
+ for sz in (0, 16, 32, 64, 79):
+ buf = (' ' * sz) + buf
+ for align_offset in range(32):
+ test(buf, a, b, align_offset)
+ tests("", '<', '>')
+ tests("a", '\0', '\0')
+ tests("a", '<', '>')
+ tests("dsdfsfa", '1', 'a')
+ tests("xa", 'a', 'a')
+ tests("bbb", 'a', '1')
+ tests("bba", 'a', '<')
+ tests("baa", '>', 'a')
+
+ def test_esc_codes(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb('12\033Da', '12', ('screen_index',), 'a')
+ self.ae(str(s.line(0)), '12')
+ self.ae(str(s.line(1)), ' a')
+ pb('\033xa', ('Unknown char after ESC: 0x%x' % ord('x'),), 'a')
+ pb('\033c123', ('screen_reset', ), '123')
+ self.ae(str(s.line(0)), '123')
+ pb('\033.\033a', ('Unhandled charset related escape code: 0x2e 0x1b',), 'a')
+
+ def test_csi_codes(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb('abcde', 'abcde')
+ s.cursor_move(5)
+ pb('x\033[2@y', 'x', ('screen_insert_characters', 2), 'y')
+ self.ae(str(s.line(0)), 'xy bc')
+ pb('x\033[2;7@y', 'x', ('CSI code @ has 2 > 1 parameters',), 'y')
+ pb('x\033[2;-7@y', 'x', ('CSI code @ has 2 > 1 parameters',), 'y')
+ pb('x\033[-0001234567890@y', 'x', ('CSI code @ is not allowed to have negative parameter (-1234567890)',), 'y')
+ pb('x\033[2-3@y', 'x', ('Invalid character in CSI: 3 (0x33), ignoring the sequence',), '@y')
+ pb('x\033[@y', 'x', ('screen_insert_characters', 1), 'y')
+ pb('x\033[345@y', 'x', ('screen_insert_characters', 345), 'y')
+ pb('x\033[345;@y', 'x', ('screen_insert_characters', 345), 'y')
+ pb('\033[H', ('screen_cursor_position', 1, 1))
+ self.ae(s.cursor.x, 0), self.ae(s.cursor.y, 0)
+ pb('\033[4H', ('screen_cursor_position', 4, 1))
+ pb('\033[4;0H', ('screen_cursor_position', 4, 0))
+ pb('\033[3;2H', ('screen_cursor_position', 3, 2))
+ pb('\033[3;2;H', ('screen_cursor_position', 3, 2))
+ pb('\033[00000000003;0000000000000002H', ('screen_cursor_position', 3, 2))
+ self.ae(s.cursor.x, 1), self.ae(s.cursor.y, 2)
+ pb('\033[0001234567890H', ('screen_cursor_position', 1234567890, 1))
+ pb('\033[J', ('screen_erase_in_display', 0, 0))
+ pb('\033[?J', ('screen_erase_in_display', 0, 1))
+ pb('\033[?2J', ('screen_erase_in_display', 2, 1))
+ pb('\033[h')
+ pb('\033[20;4h', ('screen_set_mode', 20, 0), ('screen_set_mode', 4, 0))
+ pb('\033[?1000;1004h', ('screen_set_mode', 1000, 1), ('screen_set_mode', 1004, 1))
+ pb('\033[20;4;20l', ('screen_reset_mode', 20, 0), ('screen_reset_mode', 4, 0), ('screen_reset_mode', 20, 0))
+ pb('\033[=c', ('report_device_attributes', 0, 61))
+ s.reset()
+
+ def sgr(*params):
+ return (('select_graphic_rendition', f'{x}') for x in params)
+
+ pb('\033[1;2;3;4;7;9;34;44m', *sgr('1;2;3;4;7;9;34;44'))
+ for attr in 'bold italic reverse strikethrough dim'.split():
+ self.assertTrue(getattr(s.cursor, attr), attr)
+ self.ae(s.cursor.decoration, 1)
+ self.ae(s.cursor.fg, 4 << 8 | 1)
+ self.ae(s.cursor.bg, 4 << 8 | 1)
+ pb('\033[38;5;1;48;5;7m', ('select_graphic_rendition', '38:5:1'), ('select_graphic_rendition', '48:5:7'))
+ self.ae(s.cursor.fg, 1 << 8 | 1)
+ self.ae(s.cursor.bg, 7 << 8 | 1)
+ pb('\033[38;2;1;2;3;48;2;7;8;9m', ('select_graphic_rendition', '38:2:1:2:3'), ('select_graphic_rendition', '48:2:7:8:9'))
+ self.ae(s.cursor.fg, 1 << 24 | 2 << 16 | 3 << 8 | 2)
+ self.ae(s.cursor.bg, 7 << 24 | 8 << 16 | 9 << 8 | 2)
+ pb('\033[0;2m', *sgr('0;2'))
+ pb('\033[;2m', *sgr('0;2'))
+ pb('\033[m', *sgr('0'))
+ pb('\033[1;;2m', *sgr('1;0;2'))
+ pb('\033[38;5;1m', ('select_graphic_rendition', '38:5:1'))
+ pb('\033[58;2;1;2;3m', ('select_graphic_rendition', '58:2:1:2:3'))
+ pb('\033[38;2;1;2;3m', ('select_graphic_rendition', '38:2:1:2:3'))
+ pb('\033[1001:2:1:2:3m', ('select_graphic_rendition', '1001:2:1:2:3'))
+ pb('\033[38:2:1:2:3;48:5:9;58;5;7m', (
+ 'select_graphic_rendition', '38:2:1:2:3'), ('select_graphic_rendition', '48:5:9'), ('select_graphic_rendition', '58:5:7'))
+ s.reset()
+ pb('\033[1;2;3;4:5;7;9;34;44m', *sgr('1;2;3', '4:5', '7;9;34;44'))
+ for attr in 'bold italic reverse strikethrough dim'.split():
+ self.assertTrue(getattr(s.cursor, attr), attr)
+ self.ae(s.cursor.decoration, 5)
+ c = s.callbacks
+ pb('\033[5n', ('report_device_status', 5, 0))
+ self.ae(c.wtcbuf, b'\033[0n')
+ c.clear()
+ pb('\033[6n', ('report_device_status', 6, 0))
+ self.ae(c.wtcbuf, b'\033[1;1R')
+ pb('12345', '12345')
+ c.clear()
+ pb('\033[6n', ('report_device_status', 6, 0))
+ self.ae(c.wtcbuf, b'\033[2;1R')
+ c.clear()
+ s.cursor_key_mode = True
+ pb('\033[?1$p', ('report_mode_status', 1, 1))
+ self.ae(c.wtcbuf, b'\033[?1;1$y')
+ pb('\033[?1l', ('screen_reset_mode', 1, 1))
+ self.assertFalse(s.cursor_key_mode)
+ c.clear()
+ pb('\033[?1$p', ('report_mode_status', 1, 1))
+ self.ae(c.wtcbuf, b'\033[?1;2$y')
+ pb('\033[2;4r', ('screen_set_margins', 2, 4))
+ c.clear()
+ pb('\033[14t', ('screen_report_size', 14, 0))
+ pb('\033[14;2t', ('screen_report_size', 14, 2))
+ self.ae(c.wtcbuf, b'\033[4;100;50t\033[4;100;50t')
+ self.ae(s.margin_top, 1), self.ae(s.margin_bottom, 3)
+ pb('\033[r', ('screen_set_margins', 0, 0))
+ self.ae(s.margin_top, 0), self.ae(s.margin_bottom, 4)
+ pb('\033[1 q', ('screen_set_cursor', 1, ord(' ')))
+ self.assertTrue(s.cursor.blink)
+ self.ae(s.cursor.shape, CURSOR_BLOCK)
+
+ s.reset()
+ pb('\033[3 @', ('Shift left escape code not implemented',))
+ pb('\033[3 A', ('Shift right escape code not implemented',))
+ pb('\033[3;4 S', ('Select presentation directions escape code not implemented',))
+ pb('\033[1T', ('screen_reverse_scroll', 1))
+ pb('\033[T', ('screen_reverse_scroll', 1))
+ pb('\033[+T', ('screen_reverse_scroll_and_fill_from_scrollback', 1))
+
+ c.clear()
+ pb('\033[?2026$p', ('report_mode_status', 2026, 1))
+ self.ae(c.wtcbuf, b'\x1b[?2026;2$y')
+ c.clear()
+ pb('\033[?2026h', ('screen_set_mode', 2026, 1))
+ pb('\033[?2026$p', ('report_mode_status', 2026, 1))
+ self.ae(c.wtcbuf, b'\x1b[?2026;1$y')
+ pb('\033[?2026l', ('screen_reset_mode', 2026, 1))
+ c.clear()
+ pb('\033[?2026$p', ('report_mode_status', 2026, 1))
+ self.ae(c.wtcbuf, b'\x1b[?2026;2$y')
+
+ def test_csi_code_rep(self):
+ s = self.create_screen(8)
+ pb = partial(self.parse_bytes_dump, s)
+ pb('\033[1b', ('screen_repeat_character', 1))
+ self.ae(str(s.line(0)), '')
+ pb('x\033[7b', 'x', ('screen_repeat_character', 7))
+ self.ae(str(s.line(0)), 'xxxxxxxx')
+ pb('\033[1;3H', ('screen_cursor_position', 1, 3))
+ pb('\033[byz\033[b', ('screen_repeat_character', 1), 'yz', ('screen_repeat_character', 1))
+ # repeat 'x' at 3, then 'yz' at 4-5, then repeat 'z' at 6
+ self.ae(str(s.line(0)), 'xxxyzzxx')
+ s.reset()
+ pb(' \033[3b', ' ', ('screen_repeat_character', 3))
+ self.ae(str(s.line(0)), ' ')
+ s.reset()
+ pb('\t\033[b', ('screen_tab',), ('screen_repeat_character', 1))
+ # The terminal includes blank tab padding in its line text.
+ self.ae(str(s.line(0)).rstrip(' '), '\t')
+ self.ae(s.cursor.x, 7)
+ self.ae(s.cursor.y, 0)
+ s.reset()
+ b']]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'
+
+ def test_osc_codes(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ c = s.callbacks
+ pb('a\033]2;x\\ryz\033\\bcde', 'a', ('set_title', 'x\\ryz'), 'bcde')
+ self.ae(str(s.line(0)), 'abcde')
+ self.ae(c.titlebuf, ['x\\ryz'])
+ c.clear()
+ pb('\033]\x07', ('set_title', ''), ('set_icon', ''))
+ self.ae(c.titlebuf, ['']), self.ae(c.iconbuf, '')
+ pb('1\033]ab\x072', '1', ('set_title', 'ab'), ('set_icon', 'ab'), '2')
+ self.ae(c.titlebuf, ['', 'ab']), self.ae(c.iconbuf, 'ab')
+ c.clear()
+ pb('\033]2;;;;\x07', ('set_title', ';;;'))
+ self.ae(c.titlebuf, [';;;'])
+ c.clear()
+ pb('\033]2;\x07', ('set_title', ''))
+ self.ae(c.titlebuf, [''])
+ pb('\033]110\x07', ('set_dynamic_color', 110, ''))
+ self.ae(c.colorbuf, '')
+ c.clear()
+ pb('\033]9;\x07', ('desktop_notify', 9, ''))
+ pb('\033]9;test it with a nice long string\x07', ('desktop_notify', 9, 'test it with a nice long string'))
+ pb('\033]99;moo=foo;test it\x07', ('desktop_notify', 99, 'moo=foo;test it'))
+ self.ae(c.notifications, [(9, ''), (9, 'test it with a nice long string'), (99, 'moo=foo;test it')])
+ c.clear()
+ pb('\033]8;;\x07', ('set_active_hyperlink', None, None))
+ pb('\033]8moo\x07', ('Ignoring malformed OSC 8 code',))
+ pb('\033]8;moo\x07', ('Ignoring malformed OSC 8 code',))
+ pb('\033]8;id=xyz;\x07', ('set_active_hyperlink', 'xyz', None))
+ pb('\033]8;moo:x=z:id=xyz:id=abc;http://yay;.com\x07', ('set_active_hyperlink', 'xyz', 'http://yay;.com'))
+ c.clear()
+ payload = '1' * 1024
+ pb(f'\033]52;p;{payload}\x07', ('clipboard_control', 52, f'p;{payload}'))
+ c.clear()
+ pb('\033]52;p;xyz\x07', ('clipboard_control', 52, 'p;xyz'))
+ c.clear()
+ pb('\033]22;?__current__\x07', ('set_dynamic_color', 22, '?__current__'))
+
+ def test_dcs_codes(self):
+ s = self.create_screen()
+ c = s.callbacks
+ pb = partial(self.parse_bytes_dump, s)
+ q = hexlify(b'kind').decode('ascii')
+ pb(f'a\033P+q{q}\033\\bcde', 'a', ('screen_request_capabilities', 43, q), 'bcde')
+ self.ae(str(s.line(0)), 'abcde')
+ self.ae(c.wtcbuf, '\033P1+r{}={}\033\\'.format(q, '1b5b313b3242').encode('ascii'))
+ c.clear()
+ pb('\033P$q q\033\\', ('screen_request_capabilities', ord('$'), ' q'))
+ self.ae(c.wtcbuf, b'\033P1$r1 q\033\\')
+ c.clear()
+ pb('\033P$qm\033\\', ('screen_request_capabilities', ord('$'), 'm'))
+ self.ae(c.wtcbuf, b'\033P1$rm\033\\')
+ for sgr in '0;34;102;1;2;3;4 0;38:5:200;58:2:10:11:12'.split():
+ expected = set(sgr.split(';'))
+ c.clear()
+ parse_bytes(s, f'\033[{sgr}m\033P$qm\033\\'.encode('ascii'))
+ r = c.wtcbuf.decode('ascii').partition('r')[2].partition('m')[0]
+ self.ae(expected, set(r.split(';')))
+ c.clear()
+ pb('\033P$qr\033\\', ('screen_request_capabilities', ord('$'), 'r'))
+ self.ae(c.wtcbuf, f'\033P1$r{s.margin_top + 1};{s.margin_bottom + 1}r\033\\'.encode('ascii'))
+ pb('\033P@kitty-cmd{abc\033\\', ('handle_remote_cmd', '{abc'))
+ p = base64_encode('abcd').decode()
+ pb(f'\033P@kitty-print|{p}\033\\', ('handle_remote_print', p))
+ self.ae(['abcd'], s.callbacks.printbuf)
+
+ c.clear()
+ pb('\033[?2026$p', ('report_mode_status', 2026, 1))
+ self.ae(c.wtcbuf, b'\x1b[?2026;2$y')
+ pb('\033P=1s\033\\', ('screen_start_pending_mode',))
+ c.clear()
+ pb('\033[?2026$p', ('report_mode_status', 2026, 1))
+ self.ae(c.wtcbuf, b'\x1b[?2026;1$y')
+ pb('\033P=2s\033\\', ('screen_stop_pending_mode',))
+ c.clear()
+ pb('\033[?2026$p', ('report_mode_status', 2026, 1))
+ self.ae(c.wtcbuf, b'\x1b[?2026;2$y')
+
+
+ def test_oth_codes(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb('a\033_+\\+\033\\bcde', ('draw', 'a'), ('Unrecognized APC code: 0x2b',), ('draw', 'bcde'))
+ pb('a\033^+\\+\033\\bcde', ('draw', 'a'), ('Unrecognized PM code: 0x2b',), ('draw', 'bcde'))
+ pb('a\033X+\\+\033\\bcde', ('draw', 'a'), ('Unrecognized SOS code: 0x2b',), ('draw', 'bcde'))
+
+ def test_graphics_command(self):
+ from base64 import standard_b64encode
+
+ def enc(x):
+ return standard_b64encode(x.encode('utf-8') if isinstance(x, str) else x).decode('ascii')
+
+ def c(**k):
+ for p, v in tuple(k.items()):
+ if isinstance(v, str) and p != 'payload':
+ k[p] = v.encode('ascii')
+ for f in 'action delete_action transmission_type compressed'.split():
+ k.setdefault(f, b'\0')
+ for f in ('format more id data_sz data_offset width height x_offset y_offset data_height data_width cursor_movement'
+ ' num_cells num_lines cell_x_offset cell_y_offset z_index placement_id image_number quiet unicode_placement'
+ ' parent_id parent_placement_id offset_from_parent_x offset_from_parent_y'
+ ).split():
+ k.setdefault(f, 0)
+ p = k.pop('payload', '')
+ k[''] = p
+ return ('graphics_command', k)
+
+ def t(cmd, **kw):
+ pb('\033_G{};{}\033\\'.format(cmd, enc(kw.get('payload', ''))), c(**kw))
+
+ def e(cmd, err):
+ pb(f'\033_G{cmd}\033\\', (err,))
+
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ uint32_max = 2**32 - 1
+ t('i=%d' % uint32_max, id=uint32_max)
+ t('i=3,p=4', id=3, placement_id=4)
+ e('i=%d' % (uint32_max + 1), 'Malformed GraphicsCommand control block, number is too large')
+ pb('\033_Gi=12\033\\', c(id=12))
+ t('a=t,t=d,s=100,z=-9', payload='X', action='t', transmission_type='d', data_width=100, z_index=-9)
+ t('a=t,t=d,s=100,z=9', payload='payload', action='t', transmission_type='d', data_width=100, z_index=9)
+ t('a=t,t=d,s=100,z=9,q=2', action='t', transmission_type='d', data_width=100, z_index=9, quiet=2)
+ e(',s=1', 'Malformed GraphicsCommand control block, invalid key character: 0x2c')
+ e('W=1', 'Malformed GraphicsCommand control block, invalid key character: 0x57')
+ e('1=1', 'Malformed GraphicsCommand control block, invalid key character: 0x31')
+ e('a=t,,w=2', 'Malformed GraphicsCommand control block, invalid key character: 0x2c')
+ e('s', 'Malformed GraphicsCommand control block, no = after key')
+ e('s=', 'Malformed GraphicsCommand control block, expecting an integer value')
+ e('s==', 'Malformed GraphicsCommand control block, expecting an integer value for key: s')
+ e('s=1=', 'Malformed GraphicsCommand control block, expecting a , or semi-colon after a value, found: 0x3d')
+
+ def test_deccara(self):
+ s = self.create_screen()
+ pb = partial(self.parse_bytes_dump, s)
+ pb('\033[$r', ('deccara', '0;0;0;0;0'))
+ pb('\033[;;;;4:3;38:5:10;48:2:1:2:3;1$r',
+ ('deccara', '0;0;0;0;4:3'), ('deccara', '0;0;0;0;38:5:10'), ('deccara', '0;0;0;0;48:2:1:2:3'), ('deccara', '0;0;0;0;1'))
+ for y in range(s.lines):
+ line = s.line(y)
+ for x in range(s.columns):
+ c = line.cursor_from(x)
+ self.ae(c.bold, True)
+ self.ae(c.italic, False)
+ self.ae(c.decoration, 3)
+ self.ae(c.fg, (10 << 8) | 1)
+ self.ae(c.bg, (1 << 24 | 2 << 16 | 3 << 8 | 2))
+ self.ae(s.line(0).cursor_from(0).bold, True)
+ pb('\033[1;2;2;3;22;39$r', ('deccara', '1;2;2;3;22;39'))
+ self.ae(s.line(0).cursor_from(0).bold, True)
+ line = s.line(0)
+ for x in range(1, s.columns):
+ c = line.cursor_from(x)
+ self.ae(c.bold, False)
+ self.ae(c.fg, 0)
+ line = s.line(1)
+ for x in range(0, 3):
+ c = line.cursor_from(x)
+ self.ae(c.bold, False)
+ self.ae(line.cursor_from(3).bold, True)
+ pb('\033[2*x\033[3;2;4;3;34$r\033[*x', ('screen_decsace', 2), ('deccara', '3;2;4;3;34'), ('screen_decsace', 0))
+ for y in range(2, 4):
+ line = s.line(y)
+ for x in range(s.columns):
+ self.ae(line.cursor_from(x).fg, (10 << 8 | 1) if x < 1 or x > 2 else (4 << 8) | 1)
+
+
+if __name__ == '__main__':
+ import unittest
+ unittest.main()
diff --git a/tests/extern/kitty/screen.py b/tests/extern/kitty/screen.py
new file mode 100644
index 0000000..80f8e71
--- /dev/null
+++ b/tests/extern/kitty/screen.py
@@ -0,0 +1,476 @@
+"""ctypes wrapper providing the Kitty ``Screen`` API on top of our C terminal.
+
+The shared library ``libterm.so`` is loaded via :mod:`ctypes`. Python calls
+only the ``kitty_*`` functions of ``screen_bridge.c``, which wrap the public
+API (declared in ``src/term/term.h``). Python classes on top of them match the
+subset of Kitty's test API used by ``parser.py``.
+"""
+
+import ctypes
+import os
+
+# ---------------------------------------------------------------------------
+# Shared library loading
+# ---------------------------------------------------------------------------
+
+_lib = ctypes.CDLL(os.environ.get('WSAP_KITTY_LIB', os.path.join(os.path.dirname(__file__), 'libterm.so')))
+
+# struct term_cell { uint32_t text, fg, bg; uint16_t attrs; uint8_t width, reserved; }
+class TermCell(ctypes.Structure):
+ _fields_ = [
+ ('text', ctypes.c_uint32),
+ ('fg', ctypes.c_uint32),
+ ('bg', ctypes.c_uint32),
+ ('attrs', ctypes.c_uint16),
+ ('width', ctypes.c_uint8),
+ ('reserved', ctypes.c_uint8),
+ ]
+
+
+assert ctypes.sizeof(TermCell) == 16
+
+# Reply callback type: void (*)(void *ud, const char *bytes, size_t len).
+# The bytes are not NUL-terminated, so the callback takes a raw pointer.
+REPLY_FN = ctypes.CFUNCTYPE(None, ctypes.c_void_p, ctypes.POINTER(ctypes.c_char), ctypes.c_size_t)
+
+# Function signatures
+_lib.kitty_term_new.restype = ctypes.c_void_p
+_lib.kitty_term_new.argtypes = [ctypes.c_int, ctypes.c_int, REPLY_FN, ctypes.c_void_p]
+_lib.kitty_term_free.restype = None
+_lib.kitty_term_free.argtypes = [ctypes.c_void_p]
+_lib.kitty_term_resize.restype = ctypes.c_bool
+_lib.kitty_term_resize.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int]
+_lib.kitty_term_write.restype = None
+_lib.kitty_term_write.argtypes = [ctypes.c_void_p, ctypes.c_char_p, ctypes.c_size_t]
+_lib.kitty_term_cell.restype = ctypes.c_bool
+_lib.kitty_term_cell.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int,
+ ctypes.POINTER(TermCell)]
+_lib.kitty_term_cell_text.restype = ctypes.c_int
+_lib.kitty_term_cell_text.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int,
+ ctypes.POINTER(ctypes.c_uint32), ctypes.c_int]
+for _name, _type in {
+ 'cols': ctypes.c_int,
+ 'rows': ctypes.c_int,
+ 'cursor_x': ctypes.c_int,
+ 'cursor_y': ctypes.c_int,
+ 'cursor_style': ctypes.c_int,
+ 'cursor_blink': ctypes.c_bool,
+ 'application_cursor': ctypes.c_bool,
+}.items():
+ _fn = getattr(_lib, 'kitty_term_' + _name)
+ _fn.argtypes = [ctypes.c_void_p]
+ _fn.restype = _type
+
+# ---------------------------------------------------------------------------
+# Constants
+# ---------------------------------------------------------------------------
+
+TERM_DEFAULT_FG = 0xFFFFFFFF
+TERM_DEFAULT_BG = 0xFF1E1E2E
+
+# Cell attributes (must match enum term_attr in term.h)
+TERM_ATTR_BOLD = 1 << 0
+TERM_ATTR_ITALIC = 1 << 1
+TERM_ATTR_FAINT = 1 << 2
+TERM_ATTR_STRIKE = 1 << 3
+TERM_ATTR_OVERLINE = 1 << 4
+TERM_ATTR_LINK = 1 << 5
+TERM_ATTR_EMOJI = 1 << 6
+TERM_ATTR_TEXT = 1 << 7
+TERM_ATTR_UNDERLINE_SHIFT = 8
+TERM_ATTR_UNDERLINE_MASK = 7 << TERM_ATTR_UNDERLINE_SHIFT
+
+# The longest grapheme cluster that a cell's text is read with.
+_CLUSTER_CAP = 32
+
+# Test-only accessors compiled against the current C terminal definition.
+for _name, _type in {
+ 'scroll_top': ctypes.c_int,
+ 'scroll_bottom': ctypes.c_int,
+ 'cur_fg': ctypes.c_uint32,
+ 'cur_bg': ctypes.c_uint32,
+ 'bold': ctypes.c_bool,
+ 'faint': ctypes.c_bool,
+ 'italic': ctypes.c_bool,
+ 'strike': ctypes.c_bool,
+ 'inverse': ctypes.c_bool,
+ 'underline': ctypes.c_uint8,
+}.items():
+ _fn = getattr(_lib, 'kitty_screen_' + _name)
+ _fn.argtypes = [ctypes.c_void_p]
+ _fn.restype = _type
+
+_lib.kitty_screen_row_length.argtypes = [ctypes.c_void_p, ctypes.c_int]
+_lib.kitty_screen_row_length.restype = ctypes.c_int
+_lib.kitty_screen_cell_is_tab.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int]
+_lib.kitty_screen_cell_is_tab.restype = ctypes.c_bool
+
+# ANSI color table from escape.c — used for reverse-mapping to Kitty indices.
+# Must match the built-in default palette in src/term/palette.c.
+_ANSI_COLORS = [
+ 0xFF585B70, 0xFFCC6666, 0xFFB5BD68, 0xFFF0C674,
+ 0xFF81A2BE, 0xFFB294BB, 0xFF8ABEB7, 0xFFC5C8C6,
+ 0xFF666666, 0xFFD54E53, 0xFFB9CA4A, 0xFFE7C547,
+ 0xFF7AA6DA, 0xFFC397D8, 0xFF70C0B1, 0xFFEAEAEA,
+]
+
+
+def _build_color_table():
+ """Build a reverse lookup from RGB (0xFFRRGGBB) to Kitty indexed color."""
+ table = {}
+ for i, rgb in enumerate(_ANSI_COLORS):
+ table[rgb] = (i << 8) | 1
+ levels = [0, 95, 135, 175, 215, 255]
+ for i in range(16, 232):
+ n = i - 16
+ r, g, b = levels[n // 36], levels[(n // 6) % 6], levels[n % 6]
+ rgb = 0xFF000000 | (r << 16) | (g << 8) | b
+ table[rgb] = (i << 8) | 1
+ for i in range(232, 256):
+ gray = 8 + (i - 232) * 10
+ rgb = 0xFF000000 | (gray << 16) | (gray << 8) | gray
+ table[rgb] = (i << 8) | 1
+ return table
+
+
+_COLOR_TO_KITTY = _build_color_table()
+
+
+TERM_COLOR_REF = 0x01000000
+
+
+def _convert_color(color):
+ """Convert our cell color to Kitty's format.
+
+ Ours: a palette reference (top byte 0x01; slot 0-255, 0x100 default fg,
+ 0x101 default bg) or a literal 0xFFRRGGBB color.
+
+ Kitty format:
+ 0 = default
+ index<<8|1 = indexed (0-255)
+ r<<24|g<<16|b<<8|2 = RGB
+ """
+ if (color >> 24) == (TERM_COLOR_REF >> 24):
+ slot = color & 0x1FF
+ return 0 if slot >= 0x100 else (slot << 8) | 1
+ if color == TERM_DEFAULT_FG or color == TERM_DEFAULT_BG:
+ return 0
+ kitty = _COLOR_TO_KITTY.get(color)
+ if kitty is not None:
+ return kitty
+ r = (color >> 16) & 0xFF
+ g = (color >> 8) & 0xFF
+ b = color & 0xFF
+ return (r << 24) | (g << 16) | (b << 8) | 2
+
+
+# ---------------------------------------------------------------------------
+# Screen property readers
+# ---------------------------------------------------------------------------
+
+def _read_property(ptr, name):
+ return getattr(_lib, 'kitty_screen_' + name)(ptr)
+
+
+# ---------------------------------------------------------------------------
+# Cursor — wraps the terminal's current cursor SGR state + position
+# ---------------------------------------------------------------------------
+
+class Cursor:
+ """Wraps the terminal's current cursor state (SGR attributes + position)."""
+
+ def __init__(self, screen):
+ self._screen = screen
+
+ @property
+ def _ptr(self):
+ return self._screen._ptr
+
+ # -- position --
+ @property
+ def x(self):
+ return _lib.kitty_term_cursor_x(self._screen._term)
+
+ @property
+ def y(self):
+ return _lib.kitty_term_cursor_y(self._screen._term)
+
+ # -- SGR boolean attributes --
+ @property
+ def bold(self):
+ return _read_property(self._ptr, 'bold')
+
+ @property
+ def italic(self):
+ return _read_property(self._ptr, 'italic')
+
+ @property
+ def dim(self):
+ return _read_property(self._ptr, 'faint')
+
+ @property
+ def reverse(self):
+ return _read_property(self._ptr, 'inverse')
+
+ @property
+ def strikethrough(self):
+ return _read_property(self._ptr, 'strike')
+
+ @property
+ def decoration(self):
+ # Kitty: 0=none, 1=straight, 2=double, 3=curly, 4=dotted, 5=dashed
+ return _read_property(self._ptr, 'underline')
+
+ # -- colors --
+ @property
+ def fg(self):
+ return _convert_color(_read_property(self._ptr, 'cur_fg'))
+
+ @property
+ def bg(self):
+ return _convert_color(_read_property(self._ptr, 'cur_bg'))
+
+ # -- cursor style --
+ @property
+ def blink(self):
+ return _lib.kitty_term_cursor_blink(self._screen._term)
+
+ @property
+ def shape(self):
+ return _lib.kitty_term_cursor_style(self._screen._term)
+
+
+# ---------------------------------------------------------------------------
+# CellCursor — wraps a single cell's attributes
+# ---------------------------------------------------------------------------
+
+class CellCursor:
+ """Wraps a single cell's attributes for SGR inspection."""
+
+ def __init__(self, cell):
+ self._cell = cell
+
+ @property
+ def bold(self):
+ return bool(self._cell.attrs & TERM_ATTR_BOLD)
+
+ @property
+ def italic(self):
+ return bool(self._cell.attrs & TERM_ATTR_ITALIC)
+
+ @property
+ def dim(self):
+ return bool(self._cell.attrs & TERM_ATTR_FAINT)
+
+ @property
+ def reverse(self):
+ # Our terminal swaps fg/bg when inverse is set, so cells don't
+ # carry a separate inverse flag.
+ return False
+
+ @property
+ def strikethrough(self):
+ return bool(self._cell.attrs & TERM_ATTR_STRIKE)
+
+ @property
+ def decoration(self):
+ # enum term_underline uses Kitty's numbers: 0=none, 1=straight,
+ # 2=double, 3=curly, 4=dotted, 5=dashed.
+ return (self._cell.attrs & TERM_ATTR_UNDERLINE_MASK) >> TERM_ATTR_UNDERLINE_SHIFT
+
+ @property
+ def fg(self):
+ return _convert_color(self._cell.fg)
+
+ @property
+ def bg(self):
+ return _convert_color(self._cell.bg)
+
+
+# ---------------------------------------------------------------------------
+# Line — wraps a screen line, providing cell access
+# ---------------------------------------------------------------------------
+
+class Line:
+ """Wraps a screen line, providing cell access and text content."""
+
+ def __init__(self, screen, y):
+ self._screen = screen
+ self._y = y
+
+ def cursor_from(self, x):
+ """Return a :class:`CellCursor` for cell (x, y)."""
+ cell = TermCell()
+ if not _lib.kitty_term_cell(self._screen._term, x, self._y, ctypes.byref(cell)):
+ return CellCursor(TermCell())
+ return CellCursor(cell)
+
+ def __str__(self):
+ """Return the text content of the line up to the written length."""
+ length = min(_lib.kitty_screen_row_length(self._screen._term, self._y),
+ self._screen.columns)
+ if length == 0:
+ return ''
+ result = []
+ cell = TermCell()
+ cps = (ctypes.c_uint32 * _CLUSTER_CAP)()
+ for x in range(length):
+ if not _lib.kitty_term_cell(self._screen._term, x, self._y, ctypes.byref(cell)):
+ result.append(' ')
+ continue
+ # Width 0 is the right half of a wide glyph.
+ if cell.width == 0:
+ continue
+ if _lib.kitty_screen_cell_is_tab(self._screen._term, x, self._y):
+ result.append('\t')
+ continue
+ n = _lib.kitty_term_cell_text(self._screen._term, x, self._y, cps, _CLUSTER_CAP)
+ n = min(n, _CLUSTER_CAP)
+ result.append(''.join(chr(cp) for cp in cps[:n]))
+ return ''.join(result)
+
+
+# ---------------------------------------------------------------------------
+# Callbacks — mock callbacks object for OSC/DCS responses
+# ---------------------------------------------------------------------------
+
+class Callbacks:
+ """Mock callbacks object for OSC/DCS responses."""
+
+ def __init__(self, screen=None):
+ self._screen = screen
+ self.wtcbuf = b''
+ self.titlebuf = []
+ self.iconbuf = ''
+ self.colorbuf = ''
+ self.notifications = []
+ self.printbuf = []
+
+ def clear(self):
+ self.wtcbuf = b''
+ self.titlebuf = []
+ self.iconbuf = ''
+ self.colorbuf = ''
+ self.notifications = []
+ self.printbuf = []
+ if self._screen is not None:
+ self._screen._response_buf.clear()
+
+
+# ---------------------------------------------------------------------------
+# Screen — main screen wrapper using ctypes
+# ---------------------------------------------------------------------------
+
+class Screen:
+ """Main screen wrapper using ctypes to drive the C terminal."""
+
+ def __init__(self, cols=80, rows=5):
+ self._cols = cols
+ self._rows = rows
+ self._response_buf = bytearray()
+ self._write_buf = bytearray()
+ self._callbacks = Callbacks(self)
+ # Keep a reference to the callback function so it isn't GC'd
+ self._resp_fn = REPLY_FN(self._on_response)
+ self._term = _lib.kitty_term_new(cols, rows, self._resp_fn, None)
+ if not self._term:
+ raise RuntimeError('kitty_term_new failed')
+
+ @property
+ def _ptr(self):
+ return ctypes.cast(self._term, ctypes.c_void_p).value
+
+ # -- response callback --
+ def _on_response(self, ud, data, length):
+ if data and length:
+ self._response_buf.extend(data[:length])
+ self._callbacks.wtcbuf = bytes(self._response_buf)
+
+ # -- writing --
+ def write(self, data):
+ if data:
+ _lib.kitty_term_write(self._term, bytes(data), len(data))
+
+ # -- test write buffer API (matches Kitty's test_parse interface) --
+ def test_create_write_buffer(self):
+ """Return the available space in the write buffer (int, falsy when full)."""
+ from fast_data_types import VT_PARSER_BUFFER_SIZE
+ return VT_PARSER_BUFFER_SIZE - len(self._write_buf)
+
+ def test_commit_write_buffer(self, data, write_buf):
+ """Append *data* to the internal write buffer, return bytes consumed."""
+ from fast_data_types import VT_PARSER_BUFFER_SIZE
+ available = VT_PARSER_BUFFER_SIZE - len(self._write_buf)
+ n = min(len(data), available)
+ if n > 0:
+ self._write_buf.extend(data[:n])
+ return n
+
+ def test_parse_written_data(self, cd=None):
+ """Parse the write buffer, dispatching to the C terminal and callback."""
+ data = bytes(self._write_buf)
+ self._write_buf.clear()
+ from kitty_parser import parse_bytes
+ if cd is not None:
+ parse_bytes(self, data, cd)
+ elif data:
+ # No callback — still parse to keep parser state in sync
+ parse_bytes(self, data, lambda *a: None)
+
+ # -- properties --
+ @property
+ def cursor(self):
+ return Cursor(self)
+
+ @property
+ def callbacks(self):
+ return self._callbacks
+
+ @property
+ def columns(self):
+ return _lib.kitty_term_cols(self._term)
+
+ @property
+ def lines(self):
+ return _lib.kitty_term_rows(self._term)
+
+ @property
+ def margin_top(self):
+ return _read_property(self._ptr, 'scroll_top')
+
+ @property
+ def margin_bottom(self):
+ return _read_property(self._ptr, 'scroll_bottom')
+
+ @property
+ def cursor_key_mode(self):
+ return _lib.kitty_term_application_cursor(self._term)
+
+ @cursor_key_mode.setter
+ def cursor_key_mode(self, value):
+ if value:
+ self.write(b'\x1b[?1h')
+ else:
+ self.write(b'\x1b[?1l')
+
+ # -- line access --
+ def line(self, n):
+ return Line(self, n)
+
+ # -- operations --
+ def reset(self):
+ self.write(b'\x1bc')
+
+ def cursor_move(self, n):
+ """Move cursor back n cells (kitty cursor_move: direction -1,
+ allowed to move to previous lines)."""
+ self.write(b'\x1b[' + str(n).encode() + b'D')
+
+ def close(self):
+ """Destroy the underlying C terminal."""
+ if getattr(self, '_term', None):
+ _lib.kitty_term_free(self._term)
+ self._term = None
+
+ def __del__(self):
+ self.close()
diff --git a/tests/extern/kitty/screen_bridge.c b/tests/extern/kitty/screen_bridge.c
new file mode 100644
index 0000000..63a3583
--- /dev/null
+++ b/tests/extern/kitty/screen_bridge.c
@@ -0,0 +1,113 @@
+/* Test-only entry points for the Kitty screen wrapper in screen.py.
+ * Python calls only these functions, so it needs no struct layouts other
+ * than the public struct term_cell. The kitty_screen_* accessors read
+ * properties that term.h does not expose. They compile against the current
+ * terminal layout rather than duplicating byte offsets in Python. */
+#include "internal.h"
+#include "screen.h"
+
+typedef void (*kitty_reply_fn)(void *ud, const char *bytes, size_t len);
+
+struct term *kitty_term_new(int cols, int rows, kitty_reply_fn reply, void *ud)
+{
+ return term_new(&(struct term_options){
+ .size = { .x = cols, .y = rows },
+ .callbacks = { .ud = ud, .reply = reply },
+ });
+}
+
+/* One snapshot serves every cell read. */
+static struct term_snapshot *snap;
+
+void kitty_term_free(struct term *t)
+{
+ /* A new terminal can get the address of the freed one. The snapshot
+ * would then keep its rows, so it goes away too. */
+ term_snapshot_free(snap);
+ snap = NULL;
+ term_free(t);
+}
+
+void kitty_term_write(struct term *t, const char *bytes, size_t len)
+{
+ term_feed(t, bytes, len, 0);
+}
+
+bool kitty_term_resize(struct term *t, int cols, int rows)
+{
+ return term_resize(t, (struct term_vector2i){ .x = cols, .y = rows });
+}
+
+int kitty_term_cols(struct term *t) { return term_size(t).x; }
+int kitty_term_rows(struct term *t) { return term_size(t).y; }
+int kitty_term_cursor_x(struct term *t) { return term_cursor(t).pos.x; }
+int kitty_term_cursor_y(struct term *t) { return term_cursor(t).pos.y; }
+int kitty_term_cursor_style(struct term *t) { return (int)term_cursor(t).style; }
+bool kitty_term_cursor_blink(struct term *t) { return term_cursor(t).blink; }
+bool kitty_term_application_cursor(struct term *t) { return term_modes(t).app_cursor; }
+
+/* Update the snapshot from the live screen, as a renderer reads it.
+ * Returns NULL when the cell is out of range or memory runs out. */
+static struct term_snapshot *cell_snapshot(struct term *t, int col, int row)
+{
+ struct term_vector2i size = term_size(t);
+ if (col < 0 || col >= size.x || row < 0 || row >= size.y)
+ return NULL;
+ if (!snap)
+ snap = term_snapshot_new();
+ term_scroll_to(t, 0);
+ if (!snap || !term_snapshot_update(snap, t))
+ return NULL;
+ return snap;
+}
+
+bool kitty_term_cell(struct term *t, int col, int row, struct term_cell *out)
+{
+ struct term_snapshot *s = cell_snapshot(t, col, row);
+ if (!s)
+ return false;
+ *out = term_snapshot_row(s, row)[col];
+ return true;
+}
+
+/* The code points of a cell's text: one, or a whole grapheme cluster.
+ * Returns the number of code points and writes at most cap of them. */
+int kitty_term_cell_text(struct term *t, int col, int row, uint32_t *cps, int cap)
+{
+ struct term_snapshot *s = cell_snapshot(t, col, row);
+ if (!s)
+ return 0;
+ return term_snapshot_cluster(s, term_snapshot_row(s, row)[col].text, cps, cap);
+}
+
+#define PROPERTY(type, name) \
+ type kitty_screen_##name(struct term *t) { return t->name; }
+
+PROPERTY(int, scroll_top)
+PROPERTY(int, scroll_bottom)
+PROPERTY(uint32_t, cur_fg)
+PROPERTY(uint32_t, cur_bg)
+PROPERTY(bool, bold)
+PROPERTY(bool, faint)
+PROPERTY(bool, italic)
+PROPERTY(bool, strike)
+PROPERTY(bool, inverse)
+PROPERTY(uint8_t, underline)
+
+int kitty_screen_row_length(struct term *t, int row)
+{
+ if (!t || row < 0 || row >= t->rows) return 0;
+ const struct srow *r = term_screen_row(t, row);
+ return r ? (int)r->len : 0;
+}
+
+/* A tab stores a marker cell that a snapshot shows as a blank. Kitty keeps
+ * the tab in its line text, so the wrapper asks for the marker. */
+bool kitty_screen_cell_is_tab(struct term *t, int col, int row)
+{
+ if (col < 0 || col >= t->cols || row < 0 || row >= t->rows)
+ return false;
+ term_scroll_to(t, 0);
+ const struct cell *cells = term_screen_view_row(t, row);
+ return cells && cells[col].c == '\t';
+}
generated by cgit v1.2.3 (git 2.39.1) at 2026-10-25 08:21:17 +0000