#!/usr/bin/env python
# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>

import json
import os
import shutil
import subprocess
import sys
import tempfile

from kitty.constants import is_macos, kitty_exe, read_kitty_resource
from kitty.fast_data_types import (
    Color,
    HistoryBuf,
    LineBuf,
    abspath,
    char_props_for,
    expand_ansi_c_escapes,
    expanduser,
    get_config_dir,
    makedirs,
    parse_input_from_terminal,
    read_file,
    replace_c0_codes_except_nl_space_tab,
    split_into_graphemes,
    strip_csi,
    truncate_point_for_length,
    wcswidth,
    wcwidth,
)
from kitty.fast_data_types import Cursor as C
from kitty.rgb import to_color
from kitty.utils import is_ok_to_read_image_file, is_path_in_temp_dir, sanitize_title, sanitize_url_for_display_to_user, shlex_split, shlex_split_with_positions

from . import BaseTest, filled_cursor, filled_history_buf, filled_line_buf


def create_lbuf(*lines):
    maxw = max(map(len, lines))
    ans = LineBuf(len(lines), maxw)
    for i, l0 in enumerate(lines):
        ans.line(i).set_text(l0, 0, len(l0), C())
        if i > 0:
            ans.set_continued(i, len(lines[i-1]) == maxw)
    return ans


class TestDataTypes(BaseTest):


    def test_replace_c0_codes(self):
        def t(x: str, expected: str):
            q = replace_c0_codes_except_nl_space_tab(x)
            self.ae(expected, q)
            q = replace_c0_codes_except_nl_space_tab(x.encode('utf-8'))
            self.ae(expected.encode('utf-8'), q)
        t('abc', 'abc')
        t('a\0\x01b\x03\x04\t\rc', 'a\u2400\u2401b\u2403\u2404\t\u240dc')
        t('a\0\x01😸\x03\x04\t\rc', 'a\u2400\u2401😸\u2403\u2404\t\u240dc')
        t('a\nb\tc d', 'a\nb\tc d')

    def test_to_color(self):
        for x in 'xxx #12 #1234 rgb:a/b'.split():
            self.assertIsNone(to_color(x))

        def c(spec, r=0, g=0, b=0, a=0):
            c = to_color(spec)
            self.ae(Color(r, g, b, a), c, spec)

        c('#eee # comment', 0xee, 0xee, 0xee)
        c('#234567', 0x23, 0x45, 0x67)
        c('#abCabcdef', 0xab, 0xab, 0xde)
        c('rgb:e/e/e # comment', 0xee, 0xee, 0xee)
        c('rgB:23/45/67', 0x23, 0x45, 0x67)
        c('rgb:abc/abc/def', 0xab, 0xab, 0xde)
        c('rEd', 0xff, 0, 0)
        c('aLice blUe # comment', 240, 248, 255)
        c('oklch(1,0,0)', 255, 255, 255)
        c('oklch(0,0,0)', 0, 0, 0)
        c('oklch(0.5,0.1,180)', 0, 117, 101)
        c('oklcH(0.7 0.15 140) # comment', 0x68, 0xb4, 0x57)
        c('oklch(0.9 0.05 265)', 0xce, 0xde, 0xff)
        c('lAb(70 50 -30)', 0xea, 0x88, 0xe2)
        c('lab(50,0,0)', 199, 199, 199)
        c('lab(100,0,0)', 255, 255, 255)
        c('lab(0,0,0)', 0, 0, 0)

        self.ae(int(Color(1, 2, 3)), 0x10203)
        base = Color(12, 12, 12)
        a = Color(23, 23, 23)
        b = Color(100, 100, 100)
        self.assertLess(base.contrast(a), base.contrast(b))
        self.ae(Color(1, 2, 3).as_sgr, ':2:1:2:3')
        self.ae(Color(1, 2, 3).as_sharp, '#010203')
        self.ae(Color(1, 2, 3, 4).as_sharp, '#04010203')
        self.ae(Color(1, 2, 3, 4).rgb, 0x10203)

    def test_oklch_gamut_mapping(self):
        """Test OKLCH color format with CSS Color 4 gamut mapping"""
        def c(spec, r=0, g=0, b=0):
            color = to_color(spec)
            self.assertIsNotNone(color, f'Failed to parse: {spec}')
            self.ae(Color(r, g, b), color, spec)

        def in_range(spec):
            """Verify color values are in valid 0-255 range"""
            color = to_color(spec)
            self.assertIsNotNone(color, f'Failed to parse: {spec}')
            self.assertTrue(0 <= color.red <= 255, f'Red out of range: {color.red}')
            self.assertTrue(0 <= color.green <= 255, f'Green out of range: {color.green}')
            self.assertTrue(0 <= color.blue <= 255, f'Blue out of range: {color.blue}')
            return color

        # In-gamut colors should parse unchanged
        c('oklch(0.5 0.1 180)', 0x00, 0x75, 0x65)  # Mid-tone cyan with moderate chroma

        # Out-of-gamut colors should be mapped to sRGB gamut
        # High chroma red - should be mapped but remain reddish
        color = in_range('oklch(0.7 0.35 25)')
        self.assertGreater(color.red, 200, 'High chroma red should have high red component')
        self.assertLess(color.green, 100, 'High chroma red should have low green component')

        # Edge cases
        c('oklch(0 0 0)', 0x00, 0x00, 0x00)  # Pure black
        c('oklch(1 0 0)', 0xff, 0xff, 0xff)  # Pure white

        # Achromatic colors (zero chroma)
        c('oklch(0.5 0 180)', 0xbc, 0xbc, 0xbc)  # Mid gray, hue irrelevant
        c('oklch(0.25 0 90)', 0x89, 0x89, 0x89)  # Dark gray

        # Test various hues with moderate chroma
        in_range('oklch(0.6 0.15 0)')    # Red hue
        in_range('oklch(0.6 0.15 60)')   # Yellow hue
        in_range('oklch(0.6 0.15 120)')  # Green hue
        in_range('oklch(0.6 0.15 180)')  # Cyan hue
        in_range('oklch(0.6 0.15 240)')  # Blue hue
        in_range('oklch(0.6 0.15 300)')  # Magenta hue

        # Test with different comma/space separators
        c('oklch(0.5, 0.1, 180)', 0x00, 0x75, 0x65)
        c('oklch(0.5,0.1,180)', 0x00, 0x75, 0x65)

        # Test percentage lightness
        color = to_color('oklch(50% 0.1 180)')
        self.assertIsNotNone(color)

        # Very high chroma should trigger gamut mapping
        # These should all succeed and return valid RGB values
        in_range('oklch(0.5 0.5 0)')
        in_range('oklch(0.5 0.5 180)')
        in_range('oklch(0.9 0.3 120)')

    def test_inline_comments(self):
        """Test inline comments in color values"""
        def c(spec, r=0, g=0, b=0):
            color = to_color(spec)
            self.assertIsNotNone(color, f'Failed to parse: {spec}')
            self.ae(Color(r, g, b), color, spec)

        # OKLCH with inline comment
        c('oklch(0.5 0.1 180) # Cyan color', 0x00, 0x75, 0x65)
        c('oklch(0.7 0.15 140) # Green', 0x68, 0xb4, 0x57)

        # Hex colors with inline comments
        c('#ff0000 # Red', 0xff, 0x00, 0x00)
        c('#00ff00 # Green', 0x00, 0xff, 0x00)
        c('#0000ff # Blue', 0x00, 0x00, 0xff)

        # LAB colors with inline comments
        c('lab(70 50 -30) # Purple-ish', 0xea, 0x88, 0xe2)

        # RGB with inline comments
        c('rgb:ff/00/00 # RGB Red', 0xff, 0x00, 0x00)

        # Named color should not be affected by text after it
        # (not a comment, just ignored)
        c('red', 0xff, 0x00, 0x00)

    def test_lab_parsing(self):
        """Test CIE LAB color format parsing"""
        def c(spec, r=0, g=0, b=0):
            color = to_color(spec)
            self.assertIsNotNone(color, f'Failed to parse: {spec}')
            self.ae(color.red, r)
            self.ae(color.green, g)
            self.ae(color.blue, b)
            self.ae(Color(r, g, b), color, spec)

        # LAB basic colors
        c('lab(0 0 0)', 0x00, 0x00, 0x00)      # LAB black
        c('lab(100 0 0)', 0xff, 0xff, 0xff)    # LAB white
        c('lab(50 0 0)', 0xc7, 0xc7, 0xc7)     # LAB mid-gray

        # LAB with color components
        c('lab(70 50 -30)', 0xea, 0x88, 0xe2)  # Purple-ish
        color = to_color('lab(50 50 50)')      # Orange/red-ish (positive a and b)
        self.assertIsNotNone(color)
        self.assertGreater(color.red, 0xc0)    # Should have high red
        self.assertLess(color.blue, 0x50)      # Should have low blue

        # LAB with different separators
        color = to_color('lab(70, 50, -30)')
        self.assertIsNotNone(color)
        color = to_color('lab(70,50,-30)')
        self.assertIsNotNone(color)

        # LAB with negative values (valid for a and b channels)
        color = to_color('lab(50 -50 -50)')
        self.assertIsNotNone(color)
        color = to_color('lab(50 -50 50)')
        self.assertIsNotNone(color)

    def test_color_format_errors(self):
        """Test error handling for invalid color formats"""
        # Invalid OKLCH
        self.assertIsNone(to_color('oklch()'))
        self.assertIsNone(to_color('oklch(0.5)'))
        self.assertIsNone(to_color('oklch(0.5 0.1)'))
        self.assertIsNone(to_color('oklch(a b c)'))

        # Invalid LAB
        self.assertIsNone(to_color('lab()'))
        self.assertIsNone(to_color('lab(50)'))
        self.assertIsNone(to_color('lab(50 0)'))
        self.assertIsNone(to_color('lab(a b c)'))

        # Invalid color() function
        self.assertIsNone(to_color('color()'))
        self.assertIsNone(to_color('color(unknown 1 0 0)'))

        # Empty and whitespace
        self.assertIsNone(to_color(''))
        self.assertIsNone(to_color('   '))

        # Malformed hex
        self.assertIsNone(to_color('#'))
        self.assertIsNone(to_color('#12'))
        self.assertIsNone(to_color('#1234'))

        # Malformed rgb
        self.assertIsNone(to_color('rgb:'))
        self.assertIsNone(to_color('rgb:a/b'))

    def test_linebuf(self):
        old = filled_line_buf(2, 3, filled_cursor())
        new = LineBuf(1, 3)
        new.copy_old(old)
        self.ae(new.line(0), old.line(1))
        new.clear()
        self.ae(str(new.line(0)), '')
        old.set_attribute('reverse', False)
        for y in range(old.ynum):
            for x in range(old.xnum):
                l0 = old.line(y)
                c = l0.cursor_from(x)
                self.assertFalse(c.reverse)
                self.assertTrue(c.bold)
        self.assertFalse(old.is_continued(0))
        old.set_continued(1, True)
        self.assertTrue(old.is_continued(1))
        self.assertFalse(old.is_continued(0))

        lb = filled_line_buf(5, 5, filled_cursor())
        lb2 = LineBuf(5, 5)
        lb2.copy_old(lb)
        lb.index(0, 4)
        for i in range(0, 4):
            self.ae(lb.line(i), lb2.line(i + 1))
        self.ae(lb.line(4), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.index(1, 3)
        self.ae(lb.line(0), lb2.line(0))
        self.ae(lb.line(1), lb2.line(2))
        self.ae(lb.line(2), lb2.line(3))
        self.ae(lb.line(3), lb2.line(1))
        self.ae(lb.line(4), lb2.line(4))
        self.ae(lb.create_line_copy(1), lb2.line(2))
        l2 = lb.create_line_copy(2)
        lb.copy_line_to(1, l2)
        self.ae(l2, lb2.line(2))
        lb.clear_line(0)
        self.ae(lb.line(0), LineBuf(1, lb.xnum).create_line_copy(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.reverse_index(0, 4)
        self.ae(lb.line(0), lb2.line(4))
        for i in range(1, 5):
            self.ae(lb.line(i), lb2.line(i - 1))

        lb = filled_line_buf(5, 5, filled_cursor())
        clb = filled_line_buf(5, 5, filled_cursor())
        lb2 = LineBuf(1, 5)
        lb.insert_lines(2, 1, lb.ynum - 1)
        self.ae(lb.line(0), clb.line(0))
        self.ae(lb.line(3), clb.line(1))
        self.ae(lb.line(4), clb.line(2))
        self.ae(lb.line(1), lb2.line(0))
        self.ae(lb.line(2), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.insert_lines(10, 0, lb.ynum - 1)
        for i in range(lb.ynum):
            self.ae(lb.line(i), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.insert_lines(10, 1, lb.ynum - 1)
        self.ae(lb.line(0), clb.line(0))
        for i in range(1, lb.ynum):
            self.ae(lb.line(i), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.insert_lines(1, 1, 3)
        self.ae(lb.line(0), clb.line(0))
        self.ae(lb.line(1), lb2.line(0))
        self.ae(lb.line(2), clb.line(1))
        self.ae(lb.line(3), clb.line(2))
        self.ae(lb.line(4), clb.line(4))

        lb = filled_line_buf(5, 5, filled_cursor())
        lb.delete_lines(2, 1, lb.ynum - 1)
        self.ae(lb.line(0), clb.line(0))
        self.ae(lb.line(1), clb.line(3))
        self.ae(lb.line(2), clb.line(4))
        self.ae(lb.line(3), lb2.line(0))
        self.ae(lb.line(4), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.delete_lines(10, 0, lb.ynum - 1)
        for i in range(lb.ynum):
            self.ae(lb.line(i), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.delete_lines(10, 1, lb.ynum - 1)
        self.ae(lb.line(0), clb.line(0))
        for i in range(1, lb.ynum):
            self.ae(lb.line(i), lb2.line(0))
        lb = filled_line_buf(5, 5, filled_cursor())
        lb.delete_lines(1, 1, 3)
        self.ae(lb.line(0), clb.line(0))
        self.ae(lb.line(1), clb.line(2))
        self.ae(lb.line(2), clb.line(3))
        self.ae(lb.line(3), lb2.line(0))
        self.ae(lb.line(4), clb.line(4))

        lb = filled_line_buf(5, 5, filled_cursor())
        l0 = lb.line(0)
        l0.add_combining_char(1, '\u0300')
        l0.clear_text(1, 2)
        self.ae(str(l0), '0  00')
        self.assertEqualAttributes(l0.cursor_from(1), l0.cursor_from(0))

        lb = filled_line_buf(10, 10, filled_cursor())
        lb.clear()
        lb2 = LineBuf(lb.ynum, lb.ynum)
        for i in range(lb.ynum):
            self.ae(lb.line(i), lb2.line(i))

    def test_line(self):
        lb = LineBuf(2, 3)
        for y in range(lb.ynum):
            line = lb.line(y)
            self.ae(str(line), '')
            for x in range(lb.xnum):
                self.ae(line[x], '\0')
        with self.assertRaises(IndexError):
            lb.line(lb.ynum)
        with self.assertRaises(IndexError):
            lb.line(0)[lb.xnum]
        l0 = lb.line(0)
        l0.set_text(' ', 0, len(' '), C())
        l0.add_combining_char(0, '\u0300')
        self.ae(l0[0], ' \u0300')
        l0.add_combining_char(0, '\U000e0100')
        self.ae(l0[0], ' \u0300\U000e0100')
        l0.add_combining_char(0, '\u0302')
        self.ae(l0[0], ' \u0300\U000e0100\u0302')
        l0.add_combining_char(0, '\u0301')
        self.ae(l0[0], ' \u0300\U000e0100\u0302\u0301')
        self.ae(l0[1], '\0')
        self.ae(str(l0), ' \u0300\U000e0100\u0302\u0301')
        t = 'Testing with simple text'
        lb = LineBuf(2, len(t))
        l0 = lb.line(0)
        l0.set_text(t, 0, len(t), C())
        self.ae(str(l0), t)
        l0.set_text('a', 0, 1, C())
        self.assertEqual(str(l0), 'a' + t[1:])

        c = C(3, 5)
        c.bold = c.italic = c.reverse = c.strikethrough = c.dim = True
        c.fg = c.bg = c.decoration_fg = 0x0101
        self.ae(c, c)
        c2, c3 = c.copy(), c.copy()
        self.ae(repr(c), repr(c2))
        self.ae(c, c2)
        c2.bold = False
        self.assertNotEqual(c, c2)
        l0.set_text(t, 0, len(t), C())
        l0.apply_cursor(c2, 3)
        self.assertEqualAttributes(c2, l0.cursor_from(3))
        l0.apply_cursor(c2, 0, len(l0))
        for i in range(len(l0)):
            self.assertEqualAttributes(c2, l0.cursor_from(i))
        l0.apply_cursor(c3, 0)
        self.assertEqualAttributes(c3, l0.cursor_from(0))
        l0.copy_char(0, l0, 1)
        self.assertEqualAttributes(c3, l0.cursor_from(1))

        t = '0123456789'
        lb = LineBuf(1, len(t))
        l3 = lb.line(0)
        l3.set_text(t, 0, len(t), C())
        self.ae(t, str(l3))

        l3.set_text(t, 0, len(t), C())
        q = C()
        q.bold = q.italic = q.reverse = q.strikethrough = c.dim = True
        q.decoration = 2
        c = C()
        c.x = 3
        l3.set_text('axyb', 1, 2, c)
        self.ae(str(l3), '012xy56789')
        l3.set_char(0, 'x', 1, q)
        self.assertEqualAttributes(l3.cursor_from(0), q)

    def test_url_at(self):
        self.set_options()

        def create(t):
            lb = create.lb = LineBuf(1, len(t))
            lf = lb.line(0)
            lf.set_text(t, 0, len(t), C())
            return lf

        l0 = create('file:///etc/test')
        self.ae(l0.url_start_at(0), 0)

        for trail in '.,\\}]>':
            lx = create("http://xyz.com" + trail)
            self.ae(lx.url_end_at(0), len(lx) - 2)
        for trail in ')':
            turl = "http://xyz.com" + trail
            lx = create(turl)
            self.ae(len(lx) - 1, lx.url_end_at(0), repr(turl))
        l0 = create("ftp://abc/")
        self.ae(l0.url_end_at(0), len(l0) - 1)
        l2 = create("http://-abcd] ")
        self.ae(l2.url_end_at(0), len(l2) - 3)
        l3 = create("http://ab.de           ")
        self.ae(l3.url_start_at(4), 0)
        self.ae(l3.url_start_at(5), 0)

        def lspace_test(n, scheme='http'):
            lf = create(' ' * n + scheme + '://acme.com')
            for i in range(0, n):
                self.ae(lf.url_start_at(i), len(lf))
            for i in range(n, len(lf)):
                self.ae(lf.url_start_at(i), n)
        for i in range(7):
            for scheme in 'http https ftp file'.split():
                lspace_test(i, scheme)
        l3 = create('b https://testing.me a')
        for s in (0, 1, len(l3) - 1, len(l3) - 2):
            self.ae(l3.url_start_at(s), len(l3), 'failed with start at: %d' % s)
        for s in range(2, len(l3) - 2):
            self.ae(l3.url_start_at(s), 2, 'failed with start at: %d (%s)' % (s, str(l3)[s:]))

        def no_url(t):
            lf = create(t)
            for s in range(len(lf)):
                self.ae(lf.url_start_at(s), len(lf))
        no_url('https:// testing.me a')
        no_url('h ttp://acme.com')
        no_url('http: //acme.com')
        no_url('http:/ /acme.com')

        l4 = create(' xxxxxtekljhgdkjgd')
        self.ae(l4.url_end_at(0), 0)

        for trail in '/-&':
            l4 = create('http://a.b?q=1' + trail)
            self.ae(l4.url_end_at(1), len(l4) - 1)

        l4 = create('http://a.b.')
        self.ae(l4.url_end_at(0), len(l4) - 2)
        self.ae(l4.url_end_at(0, 0, True), len(l4) - 1)

    def rewrap(self, lb, lines, columns):
        return lb.rewrap(lines, columns)

    def test_rewrap_simple(self):
        ' Same width buffers '
        lb = filled_line_buf(5, 5)
        lb2 = LineBuf(lb.ynum, lb.xnum)
        lb2 = self.rewrap(lb, lb.ynum, lb.xnum)[0]
        for i in range(lb.ynum):
            self.ae(lb2.line(i), lb.line(i))
        lb2, _, cy = self.rewrap(lb, 8, 5)
        self.ae(cy, 5)
        for i in range(lb.ynum):
            self.ae(lb2.line(i), lb.line(i), i)
        empty = LineBuf(1, lb2.xnum)
        for i in range(lb.ynum, lb2.ynum):
            self.ae(str(lb2.line(i)), str(empty.line(0)))
        lb2 = LineBuf(3, 5)
        lb2, _, cy = self.rewrap(lb, 3, 5)
        self.ae(cy, 3)
        for i in range(lb2.ynum):
            self.ae(lb2.line(i), lb.line(i + 2))
        self.assertFalse(lb.dirty_lines())
        self.ae(lb2.dirty_lines(), list(range(lb2.ynum)))

    def line_comparison(self, buf, *lines):
        for i, l0 in enumerate(lines):
            l2 = buf.line(i)
            self.ae(l0, str(l2))

    def line_comparison_rewrap(self, lb, *lines):
        lb2 = self.rewrap(lb, len(lines), max(map(len, lines)))[0]
        self.line_comparison(lb2, *lines)
        return lb2

    def assertContinued(self, lb, *vals):
        self.ae(list(vals), [lb.is_continued(i) for i in range(len(vals))])

    def test_rewrap_wider(self):
        ' New buffer wider '
        lb = create_lbuf('0123 ', '56789')
        lb2 = self.line_comparison_rewrap(lb, '0123 5', '6789', '')
        self.assertContinued(lb2, False, True)
        self.ae(lb2.dirty_lines(), [0, 1])

        lb = create_lbuf('12', 'abc')
        lb2 = self.line_comparison_rewrap(lb, '12', 'abc')
        self.assertContinued(lb2, False, False)

    def test_rewrap_narrower(self):
        ' New buffer narrower '
        lb = create_lbuf('123', 'abcde')
        lb2 = self.line_comparison_rewrap(lb, '123', 'abc', 'de')
        self.assertContinued(lb2, False, False, True)
        lb = create_lbuf('123  ', 'abcde')
        lb2 = self.line_comparison_rewrap(lb, '123', '  a', 'bcd', 'e')
        self.assertContinued(lb2, False, True, True, True)

    def test_utils(self):
        def w(x):
            return wcwidth(ord(x))
        self.ae(wcswidth('\x9c'), 0)
        self.ae(wcswidth('a\033[2mb'), 2)
        self.ae(wcswidth('\033a\033[2mb'), 2)
        self.ae(wcswidth('a\033]8;id=moo;https://foo\033\\a'), 2)
        self.ae(wcswidth('a\033x'), 2)
        self.ae(tuple(map(w, 'a1\0コニチ ✔')), (1, 1, 0, 2, 2, 2, 1, 1))
        self.ae(wcswidth('\u2716\u2716\ufe0f\U0001f337'), 5)
        self.ae(wcswidth('\u25b6\ufe0f'), 2)
        self.ae(wcswidth('\U0001f610\ufe0e'), 1)
        self.ae(wcswidth('\U0001f1e6a'), 3)
        self.ae(wcswidth('\U0001F1E6a\U0001F1E8a'), 6)
        self.ae(wcswidth('\U0001F1E6\U0001F1E8a'), 3)
        self.ae(wcswidth('\U0001F1E6\U0001F1E8\U0001F1E6'), 4)
        self.ae(wcswidth('a\u00adb'), 2)
        # Regional indicator symbols (unicode flags) are defined as having
        # Emoji_Presentation so must have width 2 but combined must have
        # width 2 not 4
        self.ae(tuple(map(w, '\U0001f1ee\U0001f1f3')), (2, 2))
        self.ae(wcswidth('\U0001f1ee\U0001f1f3'), 2)
        tpl = truncate_point_for_length
        self.ae(tpl('abc', 4), 3)
        self.ae(tpl('abc', 2), 2)
        self.ae(tpl('abc', 0), 0)
        self.ae(tpl('a\U0001f337', 2), 1)
        self.ae(tpl('a\U0001f337', 3), 2)
        self.ae(tpl('a\U0001f337b', 4), 3)
        self.ae(tpl('a\x1b[31mbc', 2), 7)

        self.ae(sanitize_title('a\0\01 \t\n\f\rb'), 'a b')

        def tp(*data, leftover='', text='', csi='', apc='', ibp=False):
            text_r, csi_r, apc_r, rest = [], [], [], []
            left = ''
            in_bp = ibp

            def on_csi(x):
                nonlocal in_bp
                if x == '200~':
                    in_bp = True
                elif x == '201~':
                    in_bp = False
                csi_r.append(x)

            for d in data:
                left = parse_input_from_terminal(text_r.append, rest.append, on_csi, rest.append, rest.append, apc_r.append, left + d, in_bp)
            self.ae(left, leftover)
            self.ae(text, ' '.join(text_r))
            self.ae(csi, ' '.join(csi_r))
            self.ae(apc, ' '.join(apc_r))
            self.assertFalse(rest)

        tp('a\033[200~\033[32mxy\033[201~\033[33ma', text='a \033[32m xy a', csi='200~ 201~ 33m')
        tp('abc', text='abc')
        tp('a\033[38:5:12:32mb', text='a b', csi='38:5:12:32m')
        tp('a\033_x,;(\033\\b', text='a b', apc='x,;(')
        tp('a\033', '[', 'mb', text='a b', csi='m')
        tp('a\033[', 'mb', text='a b', csi='m')
        tp('a\033', '_', 'x\033', '\\b', text='a b', apc='x')
        tp('a\033_', 'x', '\033', '\\', 'b', text='a b', apc='x')

        for prefix in ('/tmp', tempfile.gettempdir()):
            for path in ('a.png', 'x/b.jpg', 'y/../c.jpg'):
                self.assertTrue(is_path_in_temp_dir(os.path.join(prefix, path)))
        for path in ('/home/xy/d.png', '/tmp/../home/x.jpg'):
            self.assertFalse(is_path_in_temp_dir(os.path.join(path)))
        for path in ('/proc/self/cmdline', os.devnull):
            if os.path.exists(path):
                with open(path) as pf:
                    self.assertFalse(is_ok_to_read_image_file(path, pf.fileno()), path)
        fifo = os.path.join(tempfile.gettempdir(), 'test-kitty-fifo')
        os.mkfifo(fifo)
        fifo_fd = os.open(fifo, os.O_RDONLY | os.O_NONBLOCK)
        try:
            self.assertFalse(is_ok_to_read_image_file(fifo, fifo_fd), fifo)
        finally:
            os.close(fifo_fd)
            os.remove(fifo)
        if os.path.isdir('/dev/shm'):
            with tempfile.NamedTemporaryFile(dir='/dev/shm') as tf:
                self.assertTrue(is_ok_to_read_image_file(tf.name, tf.fileno()), fifo)
        self.ae(sanitize_url_for_display_to_user(
            'h://a\u0430b.com/El%20Ni%C3%B1o/'), 'h://xn--ab-7kc.com/El Niño/')
        for x in ('~', '~/', '', '~root', '~root/~', '/~', '/a/b/', '~xx/a', '~~'):
           self.assertEqual(os.path.expanduser(x), expanduser(x), x)
        for x in (
            '/', '', '/a', '/ab', '/ab/', '/ab/c', 'a', 'ab', 'ab/', 'ab///c', 'ab/././..', '.', '..', '../', './', '../..', '../.',
            '/a/../..', '/a/../../', '/a/..', '/ab/../../../cd/.', '///',
        ):
           self.assertEqual(os.path.abspath(x), abspath(x), repr(x))
        self.assertEqual('/', abspath('//'))
        with tempfile.TemporaryDirectory() as tdir:
            for x, ex in {
                'a': None, 'a/b/c': None, 'a/..': None, 'a/../a': None,
                'a/f': NotADirectoryError, 'a/f/d': NotADirectoryError, 'a/b/c/f/g': NotADirectoryError,
            }.items():
                q = os.path.join(tdir, x)
                if ex is None:
                    makedirs(q)
                    open(os.path.join(q, 'f'), 'wb').close()
                else:
                    with self.assertRaises(ex, msg=x):
                        makedirs(q)
        saved = {x: os.environ.get(x) for x in 'KITTY_CONFIG_DIRECTORY XDG_CONFIG_DIRS XDG_CONFIG_HOME'.split()}
        try:
            dot_config = os.path.expanduser('~/.config')
            if os.path.exists(dot_config):
                shutil.rmtree(dot_config)
            with tempfile.TemporaryDirectory() as tdir:
                with open(tdir + '/macos-launch-services-cmdline', 'w') as f:
                    print('kitty +runpy "import sys; print(sys.argv[-1])"', file=f)
                    print('next-line', file=f)
                    print()
                if is_macos:
                    env = os.environ.copy()
                    env['KITTY_CONFIG_DIRECTORY'] = tdir
                    env['KITTY_LAUNCHED_BY_LAUNCH_SERVICES'] = '1'
                    cp = subprocess.run([kitty_exe(), '+runpy', 'import json, sys; print(json.dumps(sys.argv))'], env=env, stdout=subprocess.PIPE)
                    actual = cp.stdout.strip().decode()
                    if cp.returncode != 0:
                        print(actual)
                        raise AssertionError(f'kitty +runpy failed with return code: {cp.returncode}')
                    self.ae('next-line', actual)
                os.makedirs(tdir + '/good/kitty')
                open(tdir + '/good/kitty/kitty.conf', 'w').close()
                data = os.urandom(32879)
                with open(tdir + '/f', 'wb') as f:
                    f.write(data)
                self.ae(data, read_file(f.name))
                for x in (
                    (f'KITTY_CONFIG_DIRECTORY={tdir}', f'{tdir}'),
                    (f'XDG_CONFIG_HOME={tdir}/good', f'{tdir}/good/kitty'),
                    (f'XDG_CONFIG_DIRS={tdir}:{tdir}/good', f'{tdir}/good/kitty'),
                    (f'XDG_CONFIG_DIRS={tdir}:{tdir}/bad:{tdir}/f', f'{dot_config}/kitty'),
                    (f'{dot_config}/kitty',),
                ):
                    for k in saved:
                        os.environ.pop(k, None)
                    for e in x[:-1]:
                        k, v = e.partition('=')[::2]
                        os.environ[k] = v
                    self.assertEqual(x[-1], get_config_dir(), str(x))
        finally:
            if os.path.exists(dot_config):
                shutil.rmtree(dot_config)
            for k in saved:
                os.environ.pop(k, None)
                if saved[k] is not None:
                    os.environ[k] = saved[k]

    def test_historybuf(self):
        lb = filled_line_buf()
        hb = HistoryBuf(5, 5)
        hb.push(lb.line(1))
        hb.push(lb.line(2))
        self.ae(hb.count, 2)
        self.ae(hb.line(0), lb.line(2))
        self.ae(hb.line(1), lb.line(1))
        hb = filled_history_buf()
        self.ae(str(hb.line(0)), '4' * hb.xnum)
        self.ae(str(hb.line(4)), '0' * hb.xnum)
        hb.push(lb.line(2))
        self.ae(str(hb.line(0)), '2' * hb.xnum)
        self.ae(str(hb.line(4)), '1' * hb.xnum)
        hb = large_hb = HistoryBuf(3000, 5)
        c = filled_cursor()
        for i in range(3000):
            line = lb.line(1)
            t = str(i).ljust(5)
            line.set_text(t, 0, 5, c)
            hb.push(line)
        for i in range(3000):
            self.ae(str(hb.line(i)).rstrip(), str(3000 - 1 - i))

        # rewrap
        def as_ansi(hb):
            lines = []
            hb.as_ansi(lines.append)
            return ''.join(lines)
        hb = filled_history_buf(5, 5)
        for i in range(hb.ynum):
            hb.line(i).set_wrapped_flag(True)
        before = as_ansi(hb)
        hb2 = hb.rewrap(10)
        self.ae(before, as_ansi(hb2).rstrip())

        hb = filled_history_buf(5, 5)
        hb2 = hb.rewrap(hb.xnum)
        for i in range(hb.ynum):
            self.ae(hb2.line(i), hb.line(i))
        hb = filled_history_buf(5, 5)
        hb2 = hb.rewrap(hb.xnum * 2)
        hb3 = HistoryBuf(hb.ynum, hb.xnum)
        hb3 = hb2.rewrap(hb.xnum)
        for i in range(hb.ynum):
            self.ae(hb.line(i), hb3.line(i))

        hb2 = HistoryBuf(hb.ynum, hb.xnum)
        hb2 = large_hb.rewrap(hb.xnum)
        hb2.rewrap(large_hb.xnum)

    def test_ansi_repr(self):
        lb = filled_line_buf()
        l0 = lb.line(0)
        self.ae(l0.as_ansi(), '00000')
        a = []
        lb.as_ansi(a.append)
        self.ae(a, [str(lb.line(i)) + '\n' for i in range(lb.ynum)])
        l2 = lb.line(0)
        c = C()
        c.bold = c.italic = c.reverse = c.strikethrough = c.dim = True
        c.fg = (4 << 8) | 1
        c.bg = (1 << 24) | (2 << 16) | (3 << 8) | 2
        c.decoration_fg = (5 << 8) | 1
        l2.set_text('1', 0, 1, c)
        self.ae(str(l2), '10000')
        self.ae(l2.as_ansi(), '\x1b[1;2;3;7;9;34;48:2:1:2:3;58:5:5m' '1' '\x1b[22;23;27;29;39;49;59m' '0000')  # ]]
        lb = filled_line_buf()
        for i in range(1, lb.ynum + 1):
            lb.set_continued(i, True)
        a = []
        lb.as_ansi(a.append)
        self.ae(a, [str(lb.line(i)) for i in range(lb.ynum)])
        hb = filled_history_buf(5, 5)
        a = []
        hb.as_ansi(a.append)
        self.ae(a, [str(hb.line(i)) + '\n' for i in range(hb.count - 1, -1, -1)])

    def test_strip_csi(self):
        def q(x, y=''):
            self.ae(y or x, strip_csi(x))
        q('test')
        q('a\x1bbc', 'abc')
        q('a\x1b[bc', 'ac')
        q('a\x1b[12;34:43mbc', 'abc')
        q('a\x1b[12;34:43\U0001f638', 'a\U0001f638')

    def test_single_key(self):
        from kitty.fast_data_types import GLFW_MOD_KITTY, GLFW_MOD_SHIFT, SingleKey
        for m in (GLFW_MOD_KITTY, GLFW_MOD_SHIFT):
            s = SingleKey(mods=m)
            self.ae(s.mods, m)
        self.ae(tuple(iter(SingleKey())), (0, False, 0))
        self.ae(tuple(SingleKey(key=sys.maxunicode, mods=GLFW_MOD_SHIFT, is_native=True)), (GLFW_MOD_SHIFT, True, sys.maxunicode))
        self.ae(repr(SingleKey()), 'SingleKey()')
        self.ae(repr(SingleKey(key=23, mods=2, is_native=True)), 'SingleKey(mods=2, is_native=True, key=23)')
        self.ae(repr(SingleKey(key=23, mods=2)), 'SingleKey(mods=2, key=23)')
        self.ae(repr(SingleKey(key=23)), 'SingleKey(key=23)')
        self.ae(repr(SingleKey(key=0x1008ff57)), 'SingleKey(key=269025111)')
        self.ae(repr(SingleKey(key=23)._replace(mods=2)), 'SingleKey(mods=2, key=23)')
        self.ae(repr(SingleKey(key=23)._replace(key=-1, mods=GLFW_MOD_KITTY)), f'SingleKey(mods={GLFW_MOD_KITTY})')
        self.assertEqual(SingleKey(key=1), SingleKey(key=1))
        self.assertEqual(hash(SingleKey(key=1)), hash(SingleKey(key=1)))
        self.assertNotEqual(hash(SingleKey(key=1, mods=2)), hash(SingleKey(key=1)))
        self.assertNotEqual(SingleKey(key=1, mods=2), SingleKey(key=1))

    def test_notify_identifier_sanitization(self):
        from kitty.notifications import sanitize_identifier_pat
        self.ae(sanitize_identifier_pat().sub('', '\x1b\nabc\n[*'), 'abc')

    def test_bracketed_paste_sanitizer(self):
        from kitty.utils import sanitize_for_bracketed_paste
        for x in ('\x1b[201~ab\x9b201~cd', '\x1b[201\x1b[201~~ab'):  # ]]]
            q = sanitize_for_bracketed_paste(x.encode('utf-8'))
            self.assertNotIn(b'\x1b[201~', q)
            self.assertNotIn('\x9b201~'.encode(), q)
            self.assertIn(b'ab', q)

    def test_expand_ansi_c_escapes(self):
        for src, expected in {
            'abc': 'abc',
            r'a\ab': 'a\ab',
            r'a\eb': 'a\x1bb',
            r'a\r\nb': 'a\r\nb',
            r'a\c b': 'a\0b',
            r'a\c': 'a\\c',
            r'a\x1bb': 'a\x1bb',
            r'a\x1b': 'a\x1b',
            r'a\x1': 'a\x01',
            r'a\x1g': 'a\x01g',
            r'a\z\"': 'a\\z"',
            r'a\123b': 'a\123b',
            r'a\128b': 'a\0128b',
            r'a\u1234e': 'a\u1234e',
            r'a\U1f1eez': 'a\U0001f1eez',
            r'a\x1\\':    "a\x01\\",
        }.items():
            actual = expand_ansi_c_escapes(src)
            self.ae(expected, actual)

    def test_shlex_split(self):
        for bad in (
            'abc\\', '\\', "'abc", "'", '"', 'asd' + '\\', r'"a\"', '"a\\',
        ):
            with self.assertRaises(ValueError, msg=f'Failed to raise exception for {bad!r}'):
                tuple(shlex_split_with_positions(bad))
            with self.assertRaises(ValueError, msg=f'Failed to raise exception for {bad!r}'):
                tuple(shlex_split(bad))

        for q, expected in {
            'a""': ((0, 'a'),),
            'a""b': ((0, 'ab'),),
            '-1 "" 2': ((0, '-1'), (3, ''), (6, '2')),
            "-1 '' 2": ((0, '-1'), (3, ''), (6, '2')),
            'a ""': ((0, 'a'), (2, '')),
            '""': ((0, ''),),
            '"ab"': ((0, 'ab'),),
            r'x "ab"y \m': ((0, 'x'), (2, 'aby'), (8, 'm')),
            r'''x'y"\z'1''': ((0, 'xy"\\z1'),),
            r'\abc\ d': ((0, 'abc d'),),
            '': ((0, ''),), '   ': ((0, ''),), ' \tabc\n\t\r ': ((2, 'abc'),),
            "$'ab'": ((0, '$ab'),),
            '😀': ((0, '😀'),),
            '"a😀"': ((0, 'a😀'),),
            '😀 a': ((0, '😀'), (2, 'a')),
            ' \t😀a': ((2, '😀a'),),
        }.items():
            ex = tuple(x[1] for x in expected)
            actual = tuple(shlex_split(q))
            self.ae(ex, actual, f'Failed for text: {q!r}')
            actual = tuple(shlex_split_with_positions(q))
            self.ae(expected, actual, f'Failed for text: {q!r}')

        for q, expected in {
            "$'ab'": ((0, 'ab'),),
            "1$'ab'": ((0, '1ab'),),
            '''"1$'ab'"''': ((0, "1$'ab'"),),
            r"$'a\123b'": ((0, 'a\123b'),),
            r"$'a\1b'": ((0, 'a\001b'),),
            r"$'a\12b'": ((0, 'a\012b'),),
            r"$'a\db'": ((0, 'adb'),),
            r"$'a\x1bb'": ((0, 'a\x1bb'),),
            r"$'\u123z'": ((0, '\u0123z'),),
            r"$'\U0001F1E8'": ((0, '\U0001F1E8'),),
            r"$'\U1F1E8'": ((0, '\U0001F1E8'),),
            r"$'a\U1F1E8'b": ((0, 'a\U0001F1E8b'),),
        }.items():
            actual = tuple(shlex_split_with_positions(q, True))
            self.ae(expected, actual, f'Failed for text: {q!r}')
            actual = tuple(shlex_split(q, True))
            ex = tuple(x[1] for x in expected)
            self.ae(ex, actual, f'Failed for text: {q!r}')

    def test_split_into_graphemes(self):
        self.assertEqual(char_props_for('\ue000')['category'], 'Co')
        self.ae(split_into_graphemes('ab'), ['a', 'b'])
        s = self.create_screen(cols=12)
        excluded_chars = set(range(32))

        def is_excluded(text):
            return bool(set(map(ord, text)) & excluded_chars)

        def adapt_cell_text(cells):
            for cell in cells:
                gp = split_into_graphemes(cell)
                if len(gp) == 1:
                    yield cell
                else:
                    for i, g in enumerate(gp[:-1]):
                        if wcswidth(gp[i+1][0]) != 0:
                            raise AssertionError(
                                f'cell {cell!r} contains grapheme break point at non zero width character for Test #{i}: {test["comment"]}')
                    yield from gp

        for i, test in enumerate(json.loads(read_kitty_resource('GraphemeBreakTest.json', __name__.rpartition('.')[0]))):
            expected = test['data']
            text = ''.join(expected)
            actual = split_into_graphemes(text)
            self.ae(expected, actual, f'Test #{i} failed: {test["comment"]}')
            if is_excluded(text):
                continue
            s.carriage_return(), s.erase_in_line()
            s.draw(' ' + text)
            actual = []
            for x in range(s.cursor.x):
                cell = s.cpu_cells(0, x)
                if cell['x'] > 0:
                    continue
                ct = cell['text']
                if x == 0:
                    ct = ct[1:]
                if ct:
                    actual.append(ct)
            self.ae(expected, list(adapt_cell_text(actual)), f'Test #{i} failed: {test["comment"]}')
        s.reset()
        s.draw('a' * s.columns)
        s.draw('\u0306')
        self.ae(str(s.line(0)), 'a' * s.columns + '\u0306')
        s.reset()
        s.draw('\0')
        self.ae(str(s.line(0)), '')