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#!/usr/bin/env python3
"""Kitty graphics escapes: what we actually send to the terminal (no IDA).
The splash re-anchors itself on every progress note, so the escape it sends has
to be a REPLACEMENT, not another copy. That is one key (``p``) and it is
invisible in every screenshot, which is exactly why it needs a test.
"""
#: pure stdlib escape-construction checks; no IDA, no Textual.
#: Read by tests/run.py (--fast skips every NEEDS_IDA file).
NEEDS_IDA = False
import os
import re
import sys
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from idatui import kittygfx # noqa: E402
PASS = FAIL = 0
def check(name, ok, detail=""):
global PASS, FAIL
if ok:
PASS += 1
print(f" ok {name}")
else:
FAIL += 1
print(f" FAIL {name} {detail}")
class Tty:
"""Capture what kittygfx writes, in place of the real stdout."""
def __init__(self):
self.sent = []
self._real = kittygfx._write
def __enter__(self):
kittygfx._write = lambda data: (self.sent.append(data), True)[1]
return self
def __exit__(self, *exc):
kittygfx._write = self._real
@property
def blob(self):
return "".join(self.sent)
def cmds(self, action):
"""Every graphics command with the given ``a=`` action."""
return [c for c in re.findall(r"\x1b_G([^;\x1b]*)", self.blob)
if f"a={action}" in c.split(",")]
def keys(cmd):
return dict(kv.split("=", 1) for kv in cmd.split(",") if "=" in kv)
def main() -> int:
kittygfx._uploaded[kittygfx.LOGO_ID] = (768, 801) # pretend it's uploaded
# -- the bug: anonymous placements STACK ------------------------------- #
# A placement is identified by (image id, placement id). With no p key
# every place() adds another copy at the same cell: a long load left the
# terminal compositing hundreds of copies of an RGBA image over itself.
with Tty() as tty:
for _ in range(50):
kittygfx.place(4, 10, 60, 26)
placements = tty.cmds("p")
check("place() emits one command per call", len(placements) == 50,
f"{len(placements)}")
check("every placement carries a placement id (replaces, not stacks)",
all("p" in keys(c) for c in placements),
f"{placements[0] if placements else '(none)'}")
check("the placement id is the same every time (one image on screen)",
len({keys(c)["p"] for c in placements}) == 1,
f"{sorted({keys(c).get('p') for c in placements})}")
check("...and it is non-zero (p=0 means anonymous)",
keys(placements[0])["p"] not in ("0", ""), f"{placements[0]}")
# -- the rest of the escape still says what it used to ------------------ #
with Tty() as tty:
ok = kittygfx.place(4, 10, 60, 26)
k = keys(tty.cmds("p")[0])
check("place() reports success", ok)
check("image id, source pixels and cell box are unchanged",
(k["i"], k["s"], k["v"], k["c"], k["r"])
== (str(kittygfx.LOGO_ID), "768", "801", "60", "26"), f"{k}")
check("the terminal is told not to move the cursor (C=1)",
k.get("C") == "1", f"{k}")
check("the cursor is saved and restored around the placement",
tty.blob.startswith("\x1b[s") and tty.blob.endswith("\x1b[u"),
repr(tty.blob[:8] + "..." + tty.blob[-8:]))
check("the placement is positioned 1-based (row 4 -> line 5)",
"\x1b[5;11H" in tty.blob, repr(tty.blob[:24]))
# -- deleting still removes EVERY placement of the image ---------------- #
# d=i is by image id, so it takes the placement with us regardless of p.
with Tty() as tty:
kittygfx.clear()
k = keys(tty.cmds("d")[0])
check("clear() deletes by image id (d=i), keeping the upload",
k.get("d") == "i" and k.get("i") == str(kittygfx.LOGO_ID), f"{k}")
check("clear() does not free the image data (lowercase d)",
kittygfx.is_uploaded(), "upload was dropped")
with Tty() as tty:
kittygfx.delete()
k = keys(tty.cmds("d")[0])
check("delete() frees the image data too (d=I)", k.get("d") == "I", f"{k}")
check("...and forgets the upload, so the next place() refuses",
not kittygfx.is_uploaded() and kittygfx.place(0, 0, 10, 10) is False)
# -- refusals ----------------------------------------------------------- #
kittygfx._uploaded[kittygfx.LOGO_ID] = (768, 801)
with Tty() as tty:
check("a zero-sized box is refused, not sent",
kittygfx.place(0, 0, 0, 10) is False
and kittygfx.place(0, 0, 10, 0) is False and not tty.sent,
f"{tty.sent}")
kittygfx._uploaded.pop(kittygfx.LOGO_ID, None)
# -- fit(): aspect ratio against non-square cells ----------------------- #
check("fit() keeps the aspect ratio for 9x22 cells",
kittygfx.fit((768, 801), 60, 99, cell=(9, 22)) == (60, 26),
f"{kittygfx.fit((768, 801), 60, 99, cell=(9, 22))}")
check("fit() shrinks to the row budget instead of overflowing",
kittygfx.fit((768, 801), 60, 10, cell=(9, 22))[1] == 10,
f"{kittygfx.fit((768, 801), 60, 10, cell=(9, 22))}")
check("fit() never returns a zero dimension",
all(v >= 1 for v in kittygfx.fit((768, 801), 1, 1, cell=(9, 22))))
check("fit() survives a degenerate image size",
kittygfx.fit((0, 0), 60, 26) == (60, 26))
# -- png_size() reads the header, not the pixels ------------------------ #
logo = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
"logo.png")
if os.path.exists(logo):
check("png_size() reads logo.png's IHDR",
kittygfx.png_size(logo) == (768, 801), f"{kittygfx.png_size(logo)}")
check("png_size() returns None for a non-PNG", kittygfx.png_size(__file__) is None)
check("png_size() returns None for a missing file",
kittygfx.png_size("/nonexistent/nope.png") is None)
print(f"\n{PASS} passed, {FAIL} failed")
return 1 if FAIL else 0
if __name__ == "__main__":
raise SystemExit(main())
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